JP7418880B2 - Luminaires and lighting systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to lighting fixtures and lighting systems.

Various lighting systems have been proposed that control multiple lighting fixtures using wireless communication. Patent Document 1 discloses an example of a conventional lighting system. The lighting system disclosed in this document includes a plurality of lighting fixtures and a mobile device. Each of the plurality of lighting devices transmits a beacon signal including its own identification information via wireless communication. The mobile device is, for example, a mobile terminal or an ID card carried by the user. A mobile device receives beacon signals from a plurality of lighting fixtures and obtains its own location information.

Special table 2017-509864 publication

The number of lighting fixtures included in a lighting system varies, and may include a large number of lighting fixtures. At this time, there is a concern that the beacon signals from the plurality of lighting devices may interfere with each other, making it difficult for the mobile device to properly receive the beacon signals.

The present invention was devised under the above-mentioned circumstances, and its object is to provide a lighting system that can suppress interference of beacon signals and more accurately obtain position information of mobile devices. do.

A lighting system provided by the present invention includes: a plurality of lighting fixtures each having a wireless communication module that transmits a beacon signal including identification information of the lighting fixture; a control device controlling the plurality of lighting fixtures; a mobile device that receives the beacon signal from a lighting fixture and acquires location information of the device, the plurality of lighting fixtures include a first lighting fixture and a second lighting fixture, and the first lighting fixture and the second lighting fixture transmit the beacon signal at mutually different timings.

In a preferred embodiment of the present invention, the plurality of lighting fixtures further include a third lighting fixture, and the third lighting fixture has a non-transmission mode in which the beacon signal is not transmitted.

In a preferred embodiment of the present invention, the wireless communication module of the lighting fixture includes a first wireless communication module that performs wireless communication with the plurality of lighting fixtures and wireless communication with the control device using a first protocol. a communication unit; and a second wireless communication unit that performs wireless communication with the mobile device using a second protocol; and wireless communication by the second wireless communication unit using the second protocol are performed alternately.

In a preferred embodiment of the present invention, the mobile device transmits its own location information to any of the plurality of lighting devices by wireless communication using the second protocol, and The lighting fixture that has received the location information converts the location information from the second protocol into transfer data that can be transferred by wireless communication using the first protocol, and transfers the transfer data to the first wireless communication unit. to the control device directly or via another of the lighting fixtures.

In a preferred embodiment of the present invention, a radio frequency transmitted and received by the second wireless communication unit of the first lighting fixture and a radio frequency transmitted and received by the second wireless communication unit of the second lighting fixture are mutually different.

In a preferred embodiment of the present invention, the control device further includes a plurality of the mobile devices and a plurality of monitoring devices each monitoring a state of a specific area of an environment in which the plurality of lighting devices are installed. transmits abnormal value information to at least one of the lighting fixture installed in the specific area and the mobile device close to the specific area among the plurality of mobile devices, based on the abnormal value information of the monitoring device. .

In a preferred embodiment of the present invention, the control device further includes a plurality of the mobile devices and a plurality of sensor devices each detecting a state of a specific area of an environment in which the plurality of lighting devices are installed. transmits notification information to at least one of the lighting fixture installed in the specific area and one of the plurality of mobile devices that is close to the specific area, based on the detection information of the sensor device.

According to the present invention, interference of beacon signals can be suppressed, and position information of a mobile device can be acquired more accurately.

Other features and advantages of the invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

1 is a system configuration diagram showing a lighting system according to a first embodiment of the present invention. 1 is a schematic layout diagram showing a lighting system according to a first embodiment of the present invention. It is a block diagram showing an example of the lighting fixture of the lighting system concerning a 1st embodiment of the present invention. FIG. 1 is a block diagram showing an example of a mobile device of the lighting system according to the first embodiment of the present invention. FIG. 1 is a block diagram showing an example of a control device for a lighting system according to a first embodiment of the present invention. FIG. 1 is a block diagram showing an example of a mobile terminal of the lighting system according to the first embodiment of the present invention. It is a timing chart of the beacon signal of the lighting system concerning a 1st embodiment of the present invention. 1 is a sequence diagram of a lighting system according to a first embodiment of the present invention. 1 is a sequence diagram of a lighting system according to a first embodiment of the present invention. It is a system configuration diagram showing a first modification of the lighting system according to the first embodiment of the present invention. It is a timing chart of the beacon signal of the lighting system concerning a 2nd embodiment of the present invention. 3 is a sequence diagram of a lighting system according to a second embodiment of the present invention. 3 is a sequence diagram of a lighting system according to a third embodiment of the present invention. It is a sequence diagram of a lighting system according to a third embodiment of the present invention. It is a system configuration diagram showing a lighting system according to a fourth embodiment of the present invention. It is a block diagram showing the power supply unit of the lighting system concerning a 4th embodiment of the present invention. It is a sequence diagram of the lighting system concerning a 4th embodiment of the present invention. It is a system configuration diagram showing a lighting system according to a fifth embodiment of the present invention. It is a sequence diagram of a lighting system according to a fifth embodiment of the present invention. It is a schematic layout diagram showing the illumination system concerning a 6th embodiment of the present invention. It is a sequence diagram of the lighting system concerning a 6th embodiment of the present invention. It is a sequence diagram of the lighting system concerning a 6th embodiment of the present invention. It is a sequence diagram of the 1st modification of the lighting system concerning a 6th embodiment of the present invention. It is a system configuration diagram showing a lighting system according to a seventh embodiment of the present invention. It is a schematic layout diagram showing the illumination system concerning a 7th embodiment of the present invention. It is a block diagram showing sensor equipment of a lighting system concerning a 7th embodiment of the present invention. It is a sequence diagram of the lighting system concerning a 7th embodiment of the present invention. It is a sequence diagram of the lighting system concerning a 7th embodiment of the present invention. It is a sequence diagram of the lighting system concerning a 7th embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

Terms such as "first", "second", "third", etc. in this disclosure are used merely as labels and are not necessarily intended to attach a permutation to those objects.

<First embodiment>
1 to 7 show a lighting system according to a first embodiment of the invention. The lighting system A1 of this embodiment includes a plurality of lighting fixtures L, a mobile device Me, a control device Ct, and a management terminal Md. Note that, unlike this embodiment, the configuration may not include the management terminal Md.

FIG. 1 is a system configuration diagram showing the lighting system A1. FIG. 2 is a schematic layout diagram showing the lighting system A1. FIG. 3 is a block diagram showing the lighting fixtures of lighting system A1. FIG. 4 is a block diagram showing the mobile device Me of the lighting system A1. FIG. 5 is a block diagram showing the control device Ct of the lighting system A1. FIG. 6 is a block diagram showing the management terminal Md of the lighting system A1.

[Lighting equipment L]
The plurality of lighting fixtures L are used for indoor lighting, for example, and are installed at various locations such as a ceiling, a wall surface, and a floor surface. Further, the lighting fixture L may have a configuration used for outdoor lighting. The specific form of the lighting fixture L is not limited in any way, and various forms such as alternative lighting for straight tube fluorescent lamps, high ceiling lighting, ceiling lights, downlights, base lights, spotlights, etc. can be adopted as appropriate. . In the following description, when describing the general configuration of the lighting fixture L, it will be referred to as a lighting fixture L, and when distinguishing between a plurality of lighting fixtures L, symbols such as lighting fixture L1, ... lighting fixture Ln, etc. will be used as appropriate. Sometimes used. The plurality of lighting fixtures L1 to Ln in FIG. 1 may have the same configuration, may have a part in common, or may have different configurations from each other. In the following description, unless otherwise specified, an example will be described in which a plurality of lighting fixtures L1 to Ln have the same configuration. Furthermore, for convenience of explanation, FIG. 2 shows a configuration example including nine lighting fixtures L1 to L9 (n=9).

FIG. 3 is a block diagram of the lighting fixture L. The lighting fixture L includes a light source section 11, a control section 12, a storage section 13, a wireless communication module 14, and a power supply section 15.

The light source section 11 is a part that performs a light emitting function in the lighting fixture L1. The specific configuration of the light source section 11 is not limited at all, and includes, for example, a substrate and a plurality of LEDs mounted on the substrate in a row. The lighting fixture L1 also has a transparent or semi-transparent cover (not shown) that allows light from the light source section 11 to pass therethrough.

The control unit 12 is for controlling each part of the lighting fixture L based on instructions etc. from the control device Ct. The specific configuration of the control unit 12 is not particularly limited, and includes, for example, a CPU. The storage unit 13 is for storing information necessary for controlling the control unit 12, and is made of, for example, a semiconductor memory. Note that the storage unit 13 is not limited to being built into the casing (not shown) of the lighting fixture L, but may be removably provided outside the casing of the lighting fixture L.

The wireless communication module 14 is for wireless communication with the control device Ct, other lighting equipment L, and mobile device Me, and is a module that transmits and receives wireless signals. The wireless communication module 14 is connected to the control unit 12 by, for example, UART (Universal Asynchronous Receiver Transmitter) communication, but is not limited thereto. The wireless communication module 14 of this embodiment includes a first wireless communication section 141 and a second wireless communication section 142.

To illustrate the functions of the wireless communication module 14, it receives a signal from the control device Ct, and transmits data (for example, a lighting control signal) included in the received signal to the control unit 12. Furthermore, an acknowledge signal indicating that the lighting control signal has been received is transmitted to the control device Ct. Further, a status information signal indicating the operating status of the lighting fixture L may be transmitted to the control device Ct.

In this embodiment, a unique lamp ID of each of the plurality of lighting apparatuses L is stored in the wireless communication module 14. Specific examples of the lamp ID are not particularly limited, and include, for example, a MAC (Media Access Control) address and location information. Note that the lamp ID may be stored in either the first wireless communication unit 141 or the second wireless communication unit 142 or other components of the wireless communication module 14, or may be stored in the storage unit 13, for example. You can leave it there.

The first wireless communication unit 141 is for performing wireless communication with the control device Ct and other lighting fixtures L using the first protocol. The communication frequency of wireless communication using the first protocol is not limited at all, and examples include a 920 MHz band, a 2.4 GHz band, a 5 GHz band, and the like. Further, a specific example of the first protocol is not particularly limited, and for example, BLE (Bluetooth Low Energy
), Zigbee (registered trademark), Wi-Fi (registered trademark), and the like. In this embodiment, a plurality of lighting fixtures L having the first wireless communication section 141 and a control device Ct construct a communication network Cn1 which is a mesh network shown in FIG. 1. The first protocol is used to transfer various data between multiple lighting fixtures L as described later, so it is possible to construct a mesh network while ensuring the transfer speed and reliability required for data transfer. A protocol is selected.

The second wireless communication unit 142 is for performing wireless communication with the mobile device Me using the second protocol. The communication frequency of wireless communication using the second protocol is not limited at all, and examples include a 920 MHz band, a 2.4 GHz band, a 5 GHz band, and the like. Further, specific examples of the second protocol are not particularly limited, and examples thereof include Bluetooth (registered trademark) including BLE (Bluetooth Low Energy), Zigbee (registered trademark), Wi-Fi (registered trademark), and the like. In the illustrated example, the second wireless communication unit 142 is connected to the first wireless communication unit 141 through SPI (Serial Peripheral Interface) communication, but the present invention is not limited thereto. In this embodiment, the lighting fixture L having the second wireless communication unit 142 and the corresponding sensor device Es construct a communication network Cn2.

It is preferable that the first protocol and the second protocol have different communication frequencies so that their communications do not interfere with each other. Further, it is preferable that the wireless communication by the first wireless communication unit 141 and the wireless communication by the second wireless communication unit 142 are performed alternately with different communication timings. Note that wireless communication using the second protocol may have a shorter communication distance than wireless communication using the first protocol, for example.

For example, when the first wireless communication unit 141 receives a request signal requesting data acquisition of the sensor device Es from the control device Ct, the wireless communication module 14 converts the request signal from the first protocol to the second protocol. A transfer signal is generated and transmitted from the control unit 12 to the sensor device Es.

Additionally, the wireless communication module 14 transmits a beacon signal. The beacon signal is a reference signal used to measure the position of the mobile device Me, and includes identification information (lighting device ID) of the lighting device L itself. Additionally, the beacon signal may include a time stamp. This identification information may be location information that directly indicates the location of the lighting fixture L, or may be a MAC address or the like. When the beacon signal includes a MAC address as identification information, the mobile device Me appropriately executes a process of converting this identification information into position information of the lighting fixture L. In this embodiment, the beacon signal is transmitted by the second wireless communication unit 142 of the wireless communication module 14. The output interval of the beacon signal is set, for example, by a setting signal from Ct, and is, for example, 90 to 900 ms. By lengthening the output interval, power consumption of the mobile device Me can be suppressed.

Further, when the second wireless communication unit 142 receives the position data transmitted from the mobile device Me, the second wireless communication unit 142 generates transfer data by converting the measurement data from the second protocol to the first protocol that can be transferred by wireless communication. , to the control device Ct. To give a specific example, the wireless communication module 14 detects from the protocol flag in the communication data that the position data from the mobile device Me is communication using the second protocol. Next, a predetermined process is performed in accordance with the second protocol, and the second wireless communication unit 142 receives the signal. Transfer data is then generated by converting the measurement data into a communication data format using the first protocol, and transferred to the adjacent lighting fixture L via the communication network Cn1.

The power supply section 15 is for supplying power necessary for operation to the light source section 11, the control section 12, the wireless communication module 14, and the like. The power supply unit 15 has, for example, a function as an AC/DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, and the like.

[Mobile equipment Me]
The mobile device Me is a device that can be moved from place to place in a place where a plurality of lighting fixtures L are arranged, either by being held by a user or by itself. The mobile device Me has a function of acquiring location information of the mobile device Me by receiving beacon signals from a plurality of lighting fixtures L. Specific examples of the mobile device Me are not limited in any way, and include, for example, a mobile terminal carried by the user, a tag worn by the user or attached to a cart at a commercial facility, or a cleaning robot that can move on its own. Transfer robots and the like may be mentioned as appropriate. The example shown in FIG. 2 shows a case where the mobile device Me is a portable terminal held by a user.

FIG. 4 is a block diagram when the mobile device Me is a mobile terminal, a cleaning robot, or the like. The mobile device Me of this embodiment includes a display section 51, a control section 52, a storage section 53, a wireless communication section 54, and a power supply section 55.

In the following description, when describing the general configuration of the mobile device Me, it will be referred to as a mobile device Me, and when distinguishing between a plurality of mobile devices Me, symbols such as mobile devices Me1 to Men may be used as appropriate. The plurality of mobile devices Me1 to Men may each have the same configuration, may have a part in common, or may have different configurations from each other. In the following description, unless otherwise specified, an example will be described in which a plurality of mobile devices Me1 to Men have the same configuration.

The display unit 51 is for displaying information and images necessary for operating the mobile device Me. The display unit 51 is, for example, a liquid crystal display or an organic EL display, and has a touch panel function in this embodiment. Note that instead of the display unit 51 functioning as a touch panel, the mobile device Me may be separately provided with an operation device such as a keyboard or a mouse.

The wireless communication unit 54 is for performing wireless communication with the corresponding lighting fixture L using the above-mentioned second protocol. The lighting fixture L having the second wireless communication unit 142 and the mobile device Me construct a communication network Cn2. In the illustrated example, when one mobile device Me moves through a field where a plurality of lighting devices L are arranged, the plurality of lighting devices L and the mobile device Me communicate wirelessly using the second protocol at any time. It is possible. Beacon signals are included in the signals that the wireless communication unit 54 receives from the plurality of lighting fixtures L via the communication network Cn2.

In this embodiment, the mobile device Me has a unique device ID. A specific example of the device ID is not limited at all, and for example, a MAC (Media Access Control) address is used. Note that the device ID may be stored in the wireless communication unit 54 or, for example, in the storage unit 53.

The control section 52 is for controlling each section of the mobile device Me. The specific configuration of the control unit 52 is not particularly limited, and includes, for example, a CPU. Further, the control unit 52 executes a process of acquiring position information of the mobile device Me. For example, the control unit 52 selects three points based on the identification information of the plurality of lighting fixtures L included in the beacon signals from the plurality of lighting fixtures L received by the wireless communication unit 54 and the RSSI which is the reception strength of each beacon signal. Acquire position information of the own device through surveying processing based on the surveying method. Note that when the identification information included in the beacon signal is position information of the lighting fixture L, this position information is used in the surveying process. Further, as another example, when the identification information is the MAC address of the lighting fixture L, the control unit 52 determines the MAC address from the correspondence data between the MAC address and the position information stored in advance in the storage unit 53, for example. The position information of the lighting fixture L is specified and used for survey processing.

For example, when the request signal (transfer signal) received from the lighting fixture L includes the device ID of the device itself, the request signal is transmitted to the control unit 52. The control unit 52 performs surveying processing according to the request of the request signal, and acquires position information of its own device. The control unit 52 generates position data including a device ID, position information of its own device, survey time (time stamp), etc., and transmits it from the wireless communication unit 54 .

Note that FIG. 10 shows a modification regarding the surveying process of the illumination system A1. In this modification, the surveying process is performed by a commercial cloud that can communicate with the mobile device Me by wireless communication or the like. For example, the mobile device Me that has received the beacon signal transmits the identification information and RSSI of the beacon signal for each of the plurality of lighting devices L to the commercial cloud. The commercial cloud measures the position of the mobile device Me using the identification information and the RSSI through a survey process based on a three-point survey method. Then, the location information of the mobile device Me is transmitted to the mobile device Me.

Furthermore, if the mobile device Me is a portable terminal, it may have a function of transmitting and receiving data to and from an external cloud or the like via a public communication network.

The storage unit 53 is for storing information such as programs and setting conditions necessary for controlling the control unit 52, and is made of, for example, a semiconductor memory.

The power supply section 55 is for supplying power necessary for operation to the display section 51, the control section 52, the wireless communication section 54, and the like. The power supply section 45 is, for example, a device having a function as an AC/DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, or the like, or a rechargeable battery. The battery may be charged using a contact type charger or a non-contact type charger.

When the mobile device Me is, for example, a cleaning robot or a transport robot that can run on its own, the mobile device Me further includes a drive unit (not shown). The drive unit is equipped with a motor, gears, etc. as appropriate, and is equipped with a mechanism that exerts a driving force for self-powered running and realizes running.

Furthermore, when the mobile device Me is a tag, it may be configured without either or both of the display section 51 and the storage section 53 described above. Tags can be built into ID cards owned by employees, placed externally on carts at stores, etc., built into electronic products such as patrol robots and cleaners, and attached to chairs, desks, and cleaning tools in conference rooms, etc. used by For example, if the tag is built into an ID card, the device ID is, for example, an employee number, and is stored in the storage unit 53. Further, the power supply unit 55 may be configured to generate power using 2.4 GHz radio waves (BLE, Wi-Fi (registered trademark), etc.). If such a power supply unit 55 is used, it is possible to generate electricity using radio waves that are periodically transmitted in the lighting system A1, and it is possible to prevent the battery from running out during use in the lighting system A1. .

[Control device Ct]
The control device Ct controls the lighting of the plurality of lighting fixtures L1 to Ln and issues a position acquisition command to the mobile device Me. In the case of this embodiment, the control device Ct may be installed in the same room where the plurality of lighting fixtures L1 to Ln are installed, or may be installed in another room or another floor of the same building. It may be located in a separate building. When the control device Ct and the plurality of lighting fixtures L1 to Ln are separated by a certain distance, the control device Ct and the plurality of lighting fixtures L1 to Ln communicate with each other not only by wireless communication but also by wired communication and wireless communication. It may also be configured to communicate. Note that the lighting system A1 only needs to include at least one control device Ct, and may include a plurality of control devices Ct in other configurations. Note that the control device Ct of this embodiment is capable of communicating with both the plurality of lighting fixtures L and the management terminal Md.

FIG. 5 is a block diagram of the control device Ct. In this embodiment, the control device Ct includes a display section 21, a control section 22, a storage section 23, a wireless communication section 24, and a power supply section 25.

The display unit 21 is used for initial settings, maintenance, etc. of the control device Ct, although it is not necessarily necessary in the lighting control method of the lighting system A1 described later. The display unit 21 is, for example, a liquid crystal display or the like, and may further have a touch panel function. Further, instead of the display unit 21 functioning as a touch panel, the control device Ct may be separately provided with an operation device such as a keyboard or a mouse.

The control unit 22 is a main component that controls the lighting of the plurality of lighting fixtures L1 to Ln and issues a position acquisition command to the mobile device Me, and is used to control each part of the control device Ct. For example, the control unit 22 transmits a control signal to the wireless communication unit 24 so as to transmit the control signal to the target lighting fixture L based on the instruction signal that the wireless communication unit 24 receives from the management terminal Md. The specific configuration of the control unit 22 is not particularly limited, and includes, for example, a CPU. The storage unit 23 is for storing information such as programs and setting conditions necessary for controlling the control unit 22, and is composed of, for example, a semiconductor memory, a hard disk drive, or the like.

The wireless communication unit 24 is for performing wireless communication with the first wireless communication unit 141 of the wireless communication module 14 of the plurality of lighting fixtures L1 to Ln and the management terminal Md. The frequency band of the wireless communication unit 24 and the wireless communication standard to which it conforms are wireless communication using the first protocol described above. In the example shown in FIG. 1, the control device Ct constitutes a communication network Cn1 together with a plurality of lighting fixtures L. Further, the control device Ct constitutes a communication network Cn3 together with the management terminal Md. For example, Wi-Fi (registered trademark) is used as the communication network Cn3.
For example, the wireless communication unit 24 transmits control signals from the control unit 22 to the plurality of lighting fixtures L1 to Ln via the communication network Cn1. It also transmits a position acquisition signal to the mobile device Me via the communication network Cn1. Alternatively, a user instruction signal transmitted from the management terminal Md via the communication network Cn3 is received. The received instruction signal is transmitted to the control section 22. In addition to the wireless communication unit 24, the control device Ct may include a wired or wireless communication circuit that connects to the Internet.

The power supply section 25 is for supplying power necessary for operation to the display section 21, the control section 22, the wireless communication section 24, and the like. The power supply section 25 has, for example, a function as an AC/DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, and the like.

The control device Ct has the lamp IDs of the plurality of lighting devices L and the device ID of the mobile device Me, and these are stored in the storage unit 43, for example. The lamp ID and device ID held by the control device Ct may be a MAC address as a lamp ID held by the lighting fixture L or a MAC address as a device ID held by the sensor device Es, or may be associated with these MAC addresses. It may also be another lamp ID or device ID.

[Management terminal Md]
The management terminal Md is a terminal operated by a user in the lighting system A1. The management terminal Md is not particularly limited as long as it has portability, information processing ability, etc. that enable user operations, and may be, for example, a tablet, a smartphone, a notebook PC, or the like. Note that when the plurality of lighting fixtures L that constitute the lighting system A1 are installed in a wide area, the lighting system A1 may include a plurality of management terminals Md.

FIG. 6 is a block diagram of the management terminal Md. In this embodiment, the management terminal Md includes a display section 31, a control section 32, a storage section 33, a wireless communication section 34, and a power supply section 35.

The display unit 31 is for displaying information and images necessary for operating the management terminal Md. The display unit 31 is, for example, a liquid crystal display or an organic EL display, and has a touch panel function in this embodiment. Note that instead of the display unit 31 functioning as a touch panel, the management terminal Md may be separately provided with an operation device such as a keyboard or a mouse.

The control section 32 is for controlling each section of the management terminal Md. The specific configuration of the control unit 32 is not particularly limited, and includes, for example, a CPU. The storage unit 33 is for storing information such as programs and setting conditions necessary for controlling the control unit 32, and is composed of, for example, a semiconductor memory, a hard disk drive, or the like.

The wireless communication unit 34 transmits instruction signals such as turning on/off the plurality of lighting fixtures L1 to Ln to the control device Ct, and receives status information signals of the plurality of lighting fixtures L1 to Ln from the control device Ct. do. The wireless communication unit 34 also receives the position data of the mobile device Me and a position data display request signal from the control device Ct. The frequency band and wireless communication standard of the wireless communication unit 34 may be the same as or different from those of the first wireless communication unit 141 and the wireless communication unit 24, for example, Wi-Fi (registered trademark). ) is selected. Note that the wireless communication unit 34 may be a wireless communication module built into a tablet or the like serving as the management terminal Md, or may be an external wireless communication module connected to a USB terminal or the like. In this embodiment, a communication network Cn3 is constructed by the management terminal Md and the control device Ct. Note that the communication network Cn3 may perform wireless communication using the same first protocol as the communication network Cn1.

The power supply section 35 is for supplying power necessary for operation to the display section 31, the control section 32, the wireless communication section 34, and the like. The power supply unit 35 is, for example, a rechargeable battery.

Next, an example of a control method using the lighting system A1 will be described below. 6 and 7 are timing charts of beacon signals of the lighting system A1, and FIGS. 8 and 9 are sequence diagrams showing an example of the operation of the lighting system A1.

First, as shown in FIG. 8, the management terminal Md transmits a request signal to the mobile device Me to obtain position information (step S1). Specifically, when the user operates the display unit 31 of the management terminal Md, the control unit 32 generates a command that instructs the mobile device Me to acquire measurement data. The control unit 32 transmits the command as a request signal from the wireless communication unit 34 to the control device Ct via Wi-Fi (registered trademark). Note that the acquisition of the location information of the mobile device Me is not limited to the example in which it is executed in response to a request from the management terminal Md, but may be executed in response to a request issued independently from the control device Ct, or, for example, when the mobile device Me It may be executed according to a predetermined schedule or according to operating conditions.

The control device Ct receives a request signal from the management terminal Md through the wireless communication unit 24. The control unit 22 generates request data including the device ID, time information, etc. included in the command. This request data is transmitted from the wireless communication unit 24 to the lighting fixture L1 closest to the control device Ct, for example, among the plurality of lighting fixtures L, via the communication network Cn1 which is a mesh network (step S2).

The lighting fixture L1 that has received the request data transfers the request data from the first wireless communication unit 141 of the wireless communication module 14 to the next lighting fixture L, such as another adjacent lighting fixture L (step S3). The lighting fixture L1 also converts the request data into the second protocol and transmits it via the communication network Cn2. For example, if the mobile device Me is present in the vicinity of the lighting fixture L1, the mobile device Me can receive the request data. In this example, a case will be described in which request data is not transmitted from the lighting fixture L1 to the mobile device Me.

The request data is sequentially transferred between the plurality of lighting fixtures L in the communication network Cn1, and is received by the wireless communication module 14 of the lighting fixture Ln. The control unit 12 of the lighting fixture Ln converts the received request data into request data according to the second protocol, and transmits it from the second wireless communication unit 142 of the wireless communication module 14 via the communication network Cn2 (step S4). .

In the example of FIG. 8, request data from the lighting fixture Ln is received by the wireless communication unit 54 of the mobile device Me via the communication network Cn2. In the example shown in FIG. 2, the lighting fixture Ln is, for example, the lighting fixture L7 or the lighting fixture L8. When the control unit 52 of the mobile device Me recognizes that the device ID that specifies the operation target included in the request data is the device ID of the own device, the control unit 52 of the mobile device Me performs a survey to acquire (estimate) position information according to the request data. Processing is performed (step S5). This surveying process is based on the three-point survey method using beacon signals from the plurality of lighting fixtures L mentioned above. Through this surveying process, the control unit 52 acquires position information of its own device. Note that the surveying process may be a process completed by the mobile device Me, or may be a result of processing on the commercial cloud by transferring data to the commercial cloud.

FIG. 7 is a timing chart for transmitting beacon signals from a plurality of lighting fixtures L used in surveying processing. The timing at which the line graph rises is the timing at which beacon signals from the lighting fixtures L1 to L9 shown in FIG. 2 are transmitted. Each of the lighting fixtures L1 to L9 periodically transmits a beacon signal, for example, every 300 ms. Furthermore, the beacon signals of the lighting fixtures L1, L5, L9, the lighting fixtures L2, L6, L7, and the lighting fixtures L3, L4, L8 are transmitted at different timings, for example, with a time interval of 100 ms. There is. Therefore, the mobile device Me receives beacon signals at three different timings, and receives beacon signals from nine lighting devices L at maximum. Although the beacon signals are received at different timings, if the time interval is, for example, about 100 ms, it is possible to avoid unduly lowering the accuracy of the surveying process of the mobile device Me.

In addition, when grouping lighting fixtures L1, L5, L9, lighting fixtures L2, L6, L7, and lighting fixtures L3, L4, L8, assuming the arrangement shown in Figure 2, the arrangement may be biased toward one of the groups. This is to avoid including only the lighting fixture L. The transmission timing setting of the beacon signal may be set at the time of initial installation of the plurality of lighting fixtures L by, for example, transmitting a setting signal from the control device Ct to each lighting fixture L, or may be set as appropriate during normal use. Good too. Alternatively, setting processing may be performed in each device when initially introducing a plurality of lighting fixtures L.

In such a configuration, one of the two lighting fixtures L whose beacon signal transmission timings are different from each other corresponds to the first lighting fixture of the present invention, and the other corresponds to the second lighting fixture.

Next, as shown in FIG. 9, the control unit 52 of the mobile device Me generates position data Dp including, for example, the device ID of the mobile device Me, position information, survey time (time stamp), etc., and transmits the position data Dp to the wireless communication unit 44. from there via the communication network Cn2 (step S6).

In the communication network Cn1, for example, the lighting fixture Ln closest to the mobile device Me receives the position data Dp via the communication network Cn2. The wireless communication module 14 of the lighting fixture Ln receives the position data Dp by detecting that it is the second protocol from the protocol flag in the position data Dp and performing processing according to the protocol. Then, transfer data Dt is generated by converting the position data Dp into a communication data format using the first protocol, and transferred to the adjacent lighting fixture L via the communication network Cn1 (step S7).

In the communication network Cn1, which is a mesh network, the transfer data Dt sequentially transferred between the plurality of lighting fixtures L is received by the wireless communication module 14 of the lighting fixture L1. The lighting fixture L1 transmits the transfer data Dt to the control device Ct (step S8).

Upon receiving the transfer data Dt, the control device Ct converts the device ID, location information, survey time (time stamp), etc. of the mobile device Me included in the transfer data Dt into a wireless signal, and transmits the radio signal to the management terminal via the communication network Cn3. Md (step S9).

In the management terminal Md, the wireless communication unit 34 receives the wireless signal transmitted from the control device Ct. The control unit 32 displays, for example, the device ID, location information, survey time (time stamp), etc. of the mobile device Me on the display unit 31 based on the information included in the wireless signal received by the wireless communication unit 34 (step S10 ). The display on the display unit 31 includes, for example, displaying a diagram similar to the layout diagram shown in FIG. Display. These displays may be displayed in a format that is easy for the user of the management terminal Md to understand, or any information may be intentionally omitted and displayed. Furthermore, the display format may be a text display, an icon display, a combination of these, or the like, as appropriate.

Next, the operation of the lighting system A1 will be explained.

According to this embodiment, as shown in FIG. 7, the timings at which the lighting fixture L1 and the lighting fixture L2 transmit beacon signals are different from each other. Therefore, the mobile device Me can more reliably distinguish and receive the beacon signal from the lighting fixture L1 and the beacon signal from the lighting fixture L2. Therefore, according to the lighting system A1, it is possible to suppress interference of beacon signals and more accurately acquire position information of the mobile device Me. Moreover, as understood from this embodiment, when the number of the plurality of lighting fixtures L is larger, it is preferable to divide the transmission timing of the beacon signal into more timings to suppress interference.

Further, the first wireless communication section 141 and the second wireless communication section 142 of the wireless communication module 14 of the lighting fixture L perform their respective wireless communication alternately. Thereby, it is possible to suppress radio wave interference between the wireless communication by the first wireless communication unit 141 using the first protocol and the wireless communication using the second protocol by the second wireless communication unit 142.

As in the modified example shown in FIG. 10, the mobile device Me is not limited to executing the surveying process for its own position within its own device, but may also have a commercial cloud perform part of the surveying process. good. This has the advantage that the system configuration of the lighting system A1 can be set in a more diverse manner.

11-29 illustrate other embodiments of the invention. Note that in these figures, elements that are the same or similar to those in the above embodiment are given the same reference numerals as in the above embodiment.

<Second embodiment>
11 and 12 show a beacon signal transmission timing chart and sequence diagram of a lighting system according to a second embodiment of the present invention. In this embodiment, one of the plurality of lighting fixtures L is set to a non-transmission mode in which it does not transmit a beacon signal, and corresponds to the third lighting fixture in the present invention. In the example shown in FIG. 11, lighting fixtures L3, L4, and L8 correspond to the third lighting fixture. The other lighting fixtures L1, L2, L5, L6, L7, and L9 are set to a transmission mode in which they transmit beacon signals.

The specific process of setting the lighting fixtures L3, L4, and L8 to non-transmission mode is not limited at all. FIG. 12 shows an example of settings based on a request from the management terminal Md. Differently from this, for example, by transmitting a setting signal from the control device Ct to each lighting fixture L, the setting may be made when the plurality of lighting fixtures L are initially introduced, or may be set as appropriate during normal use. Alternatively, setting processing may be performed in each device when initially introducing a plurality of lighting fixtures L.

As shown in FIG. 12, lighting fixtures L3, L4, and L8 are selected on the management terminal Md as objects to be set to non-transmission mode, and mode settings are made such that these lighting fixtures are set to OFF so that they do not transmit beacon signals. A request command is transmitted (step S11). Based on the request signal from the management terminal Md, the control device Ct creates transfer data including the fixture ID of the lighting fixture L to be set, a mode setting command, a time stamp, etc., and transmits it via the communication network Cn1 ( Step S12). The lighting fixture L1 confirms that the fixture ID of the received transfer data is different from its own fixture ID, and transmits the transfer data to the next lighting fixture L (step S13). When the lighting fixture L3 recognizes that its own fixture ID is included in the fixture ID of the received transfer data, it turns off the beacon signal (non-transmission mode) and sends a status signal indicating that the settings have been changed to the communication network. Cn1 (step S14). Further, the transfer data is transmitted to the next lighting fixture L (step S15). Similarly, when the lighting fixture L4 that has received the transfer data recognizes that its own fixture ID is included in the fixture ID of the received transfer data, it turns off the beacon signal (non-transmission mode) and sends the status signal to the communication network. Cn1 (step S16). Further, the transfer data is transmitted to the next lighting fixture L (step S17). After that, this process is taken over by the other lighting fixtures L, and the lighting fixture L8 is set to the non-transmission mode in the same way as the lighting fixtures L3 and L4.

According to this embodiment as well, interference of beacon signals can be suppressed and position information of a mobile device can be acquired more accurately. Moreover, the power consumption of the lighting fixtures L3, L4, and L8 set to the non-transmission mode can be suppressed. Note that in the arrangement shown in FIG. 2, the lighting fixtures L3, L4, and L8 are not arranged biased toward any one region. This is preferable for setting the non-transmission mode and avoiding deterioration in the accuracy of the surveying process of the mobile device Me. Furthermore, in the lighting system A2, lighting fixtures L3, L4, and L8 in a non-transmission mode that do not transmit beacon signals, and lighting fixtures L1, L2, L5, L6, L7, and L9 in a transmission mode are arranged. Regarding the lighting fixtures L1, L2, L5, L6, L7, and L9 in the transmission mode, the transmission timing of beacon signals between the lighting fixtures L1, L5, and L9 and the lighting fixtures L2, L6, and L7 is similar to the above-mentioned lighting system A1. Settings are adopted in which the signals are synchronized so that they are different from each other, and this has the effect of suppressing interference of beacon signals.

<Third embodiment>
13 and 14 show sequence diagrams of a lighting system according to a third embodiment of the invention. In this embodiment, a clock unit Ut is used. The clock unit Ut has a function of acquiring time information, for example, by receiving FM radio waves, and a function of transmitting the time information to the control device Ct, for example, by Wi-Fi (registered trademark). The clock unit Ut transmits time information (step S21), and the control device Ct receives it. The control device Ct creates time data by converting the time information into the first protocol, and transmits it to the plurality of lighting fixtures L via the communication network Cn1 (step S22). The lighting fixture L1 that has received the time information synchronizes its own time with the time data, and also transfers the time data to the next lighting fixture L (step S23). The lighting fixture Ln that has received the time information synchronizes its own time with the time data, converts the time data into the second protocol, and transmits it to the mobile device Me via the communication network Cn2 (step S24). The mobile device Me that has received the time data via the communication network Cn2 synchronizes its own time with the time data. Furthermore, the mobile device Me may perform a process of surveying its own position (step S25).

Next, as shown in FIG. 14, the mobile device Me transmits position data Dp including a time stamp based on the synchronized time information, similar to the procedure in the lighting system A1 described above (step S26). The lighting fixture Ln that has received the position data Dp converts the position data into transfer data Dt and transfers it to the next lighting fixture L (step S27). When the lighting fixture L1 receives the transferred data Dt, the lighting fixture L1 transmits the data Dt to the control device Ct (step S28). The control device Ct that has received the transfer data Dt acquires the position information of the mobile device Me together with a time stamp synchronized with the clock unit Ut (step S29).

According to this embodiment as well, interference of beacon signals can be suppressed and position information of a mobile device can be acquired more accurately. Further, according to the present embodiment, it is possible to more accurately set the respective times of the plurality of lighting fixtures L and the mobile device Me. This is preferable to more accurately obtain the position of the mobile device Me at each time, for example, when the mobile device Me moves from time to time.

<Fourth embodiment>
15 to 17 are a system configuration diagram, a block diagram, and a sequence diagram of a lighting system according to a fourth embodiment of the present invention. The lighting system A4 of this embodiment includes a mobile device Me that can run on its own, and is configured as a cleaning robot, for example. Furthermore, the lighting system A4 includes a power supply unit Up. The power supply unit Up is fixedly installed at a suitable location where the plurality of lighting fixtures L are arranged, and supplies the power necessary for the mobile device Me to travel on its own. In this case, the mobile device Me includes, in the power supply section 55, a battery or the like that stores the power supplied from the power supply unit Up.

As shown in FIG. 16, the power supply unit Up includes a relay switch 61, a control section 62, a wireless communication section 64, and a power supply section 65.

The relay switch 61 is a part to which, for example, the mobile device Me is connected, and has the function of switching ON/OFF the power supply to the mobile device Me. The control unit 62 controls the relay switch 61 based on the received control data. The wireless communication unit 64 is capable of wireless communication using the second protocol. The power supply section 65 is for supplying power necessary for operation to the relay switch 61, control section 62, wireless communication section 64, etc., and further supplies necessary power to the mobile device Me. The power supply unit 65 is connected to, for example, commercial AC 100V or 200V power, and has a function as an AC/DC converter that converts this power into DC power, a voltage transformation function, and the like.

As shown in FIG. 17, in the lighting system A4, for example, when the mobile device Me enters a state in which power supply is required, the mobile device Me moves to the power supply unit Up (step S31). The mobile device Me stores in advance the position where the power supply unit Up is installed, for example. When the mobile device Me arrives at the power supply unit Up and becomes ready for power supply, it executes a process of measuring its own position and transmits position data Dp (step S32). The lighting fixture Ln that has received the position data Dp creates transfer data Dt converted into a first protocol that can be transferred over the communication network Cn1 of the plurality of lighting fixtures L, and transfers it to the next lighting fixture L (step S33). . The lighting fixture L1 that has received the transfer data Dt transfers the transfer data Dt to the control device Ct (step S34). The control device Ct, which has received the transfer data Dt in step S35, confirms that the mobile device Me is in a position where power can be supplied from the power supply unit Up (step S36). Next, the control device Ct transmits an instruction to start power feeding (power feeding ON instruction) to the power feeding unit Up via the communication network Cn3 such as Wi-Fi (registered trademark) (step S37). The power supply unit Up that has received the power supply ON instruction starts supplying power to the mobile device Me (step S38).

According to this embodiment as well, interference of beacon signals can be suppressed and position information of a mobile device can be acquired more accurately. Further, in a state where the mobile device Me reaches a position where power can be supplied from the power supply unit Up, power can be supplied from the power supply unit Up more reliably. Further, when the mobile device Me is not in a position where power can be supplied, it is possible to suppress unnecessary operation of the power supply unit Up.

<Fifth embodiment>
18 and 19 are a system configuration diagram and a sequence diagram of a lighting system according to a fifth embodiment of the present invention. The lighting system A5 of this embodiment includes a mobile device Me that can run on its own, and is configured as a cleaning robot, for example. Furthermore, the lighting system A5 includes a plurality of lighting fixtures L11, L12, L13, L21, L22, and L23. The plurality of lighting fixtures L11, L12, and L13 are arranged on the same floor of the building, and in the illustrated example, they are arranged on the first floor. On the other hand, the plurality of lighting fixtures L21, L22, L23 are installed on a different floor from the plurality of lighting fixtures L11, L12, L13, and in the illustrated example, they are located on the second floor. The cleaning robot serving as the mobile device Me can move between the first floor and the second floor by running on its own or with the assistance of a lifting device such as an elevator.

Each of the lighting fixtures L11 and L21 of this embodiment functions as a gate module. The gate module functions as a module that forms a small network (cluster) together with some of the lighting fixtures L within the communication network Cn1 which is a mesh network. Wireless communication between the plurality of clusters is performed by gate modules. The lighting fixtures L11 and L21 functioning as gate modules can be constructed, for example, by appropriately changing the setting program of the wireless communication module 14 of the lighting fixture L having the above-described configuration.

In the illustrated example, a cluster Cn11 is constructed by lighting fixtures L11, L12, and L13 installed on the same floor. Furthermore, a cluster Cn12 is constructed by lighting fixtures L21, L22, and L23 installed on the same floor. Furthermore, in this embodiment, the second wireless communication unit 142 of the lighting fixtures L11, L12, L13 constructs the communication network Cn21 of the second protocol, and the second wireless communication unit 142 of the lighting fixtures L21, L22, L23 constructs the communication network Cn21 of the second protocol. 142 constructs a second protocol communication network Cn22. The radio frequencies of the communication network Cn21 and the communication network Cn22 are set to be different from each other. In this embodiment, the radio frequency transmitted and received by the second wireless communication unit 142 of the plurality of lighting fixtures L11, L12, L13 (first lighting fixtures) arranged on the first floor and the plurality of lighting fixtures arranged on the second floor are explained. The radio frequencies transmitted and received by the second wireless communication units 142 of L21, L22, and L23 (second lighting fixtures) are different from each other. That is, the second wireless communication unit 142 of the lighting fixtures L11, L12, and L13 has a wireless frequency set to 2.450 GHz, and the first beacon signal is transmitted at this frequency. On the other hand, the second wireless communication unit 142 of the lighting fixtures L21, L22, and L23 has a wireless frequency set to 2.460 GHz, and the second beacon signal is transmitted at this frequency.

Next, the operation of the lighting system A5 will be described below.

For example, the mobile device Me acquires its own position information through steps S1 to S5 in the lighting system A1 described with reference to FIG. At this time, the mobile device Me is doing work such as cleaning on the first floor. Therefore, the mobile device Me receives the first beacon signals from the lighting fixtures L11, L12, and L13, and performs surveying processing based on the first beacon signals. Since the mobile device Me has received the first beacon signal, it knows that the mobile device Me is located on the first floor. Next, the mobile device Me creates position data Dp based on the position information of its own device on the first floor, and transmits it via the communication network Cn21 (step S41). The lighting fixture L13 that has received the position data Dp via the communication network Cn21 creates and transfers the transfer data Dt (step S42). The lighting fixture L11 that has received the transfer data Dt transfers the transfer data Dt to the control device Ct (step S43). The control device Ct recognizes that the mobile device Me is located on the first floor from the received transfer data Dt, and recognizes the position on the first floor, and transmits, for example, the position information to the management terminal Md (step S44). The management terminal Md displays the location of the mobile device Me on the display unit 31, for example, based on the received location information (step S45). In this display, for example, a floor map of the first floor and the second floor is displayed on the display unit 31, and an icon or the like indicating the mobile device Me is displayed at a corresponding position in the area corresponding to the first floor.

On the other hand, the mobile device Me moves from the first floor to the second floor at a timing parallel to or before or after steps S42 to S45 (step S46). When the mobile device Me reaches the second floor, the mobile device Me acquires its own position information through steps S1 to S5 in the lighting system A1 described with reference to FIG. 8, for example. At this time, the mobile device Me receives the second beacon signals from the lighting fixtures L21, L22, and L23, and performs the surveying process based on the second beacon signals. Since the mobile device Me has received the second beacon signal, it knows that it is located on the second floor. Next, the mobile device Me creates position data Dp based on the position information of its own device on the second floor, and transmits it via the communication network Cn22 (step S47). The lighting fixture L23 that has received the position data Dp via the communication network Cn22 creates and transfers the transfer data Dt (step S48). The lighting fixture L21 that has received the transfer data Dt transfers the transfer data Dt to the control device Ct (step S49). The control device Ct recognizes that the mobile device Me is located on the second floor from the received transfer data Dt, and recognizes the position on the second floor, and transmits, for example, the position information to the management terminal Md (step S50). The management terminal Md displays the location of the mobile device Me on the display unit 31, for example, based on the received location information (step S51). In this display, for example, an icon or the like indicating the mobile device Me is displayed at a corresponding position in the area corresponding to the second floor on the floor map displayed on the display unit 31.

According to this embodiment as well, interference of beacon signals can be suppressed and position information of a mobile device can be acquired more accurately. Furthermore, the communication network Cn21 and the communication network Cn22 have different radio frequencies. Thereby, the mobile device Me can more accurately and more accurately determine whether the mobile device Me is located on the first floor or the second floor, depending on which of the communication networks Cn21 and Cn22 the radio frequency of the received beacon signal is. can be easily determined.

<Sixth embodiment>
20 to 22 are a schematic layout diagram and a sequence diagram of a lighting system according to a sixth embodiment of the present invention. The lighting system A6 of this embodiment includes one or more monitoring cameras Cm. Each of the monitoring cameras Cm monitors the state of a specific area, and corresponds to the monitoring device of the present invention. In the example shown in FIG. 20, a plurality of surveillance cameras Cm are arranged. The specific area monitored by each monitoring camera Cm is, for example, a part of a belt conveyor on which the work target cargo is sequentially conveyed. Furthermore, the lighting system A6 includes a plurality of mobile devices Me. The plurality of mobile devices Me of this embodiment can be used as ID cards or wearable terminals worn by, for example, workers who work on a plurality of packages transported by a belt conveyor, managers of equipment such as a belt conveyor, etc. It is configured. In the figure, for convenience of explanation, an example will be explained in which nine lighting fixtures L1 to L9 and four mobile devices Me1 to Me4 are provided. However, when the lighting system A6 is applied to a larger factory etc., multiple The number of lighting fixtures L becomes significantly large, and may exceed 100, for example. Furthermore, the number of mobile devices Me may also significantly increase.

Next, the operation of the lighting system A6 will be described below.

In the lighting system A6, for example, through steps S1 to S5 in the lighting system A1 described with reference to FIG. 8, each of the mobile devices Me1 to Me4 acquires position information of its own device and transmits position data Dp ( Step S61). These position data Dp are sequentially received by the plurality of lighting fixtures L, converted into transfer data Dt, and transmitted (step S62). The lighting fixture L1 receives these transfer data Dt and transfers them to the control device Ct (step S63). The control device Ct transmits the position data of the mobile devices Me1 to Me4 to the management terminal Md based on the received transfer data Dt (step S64). The management terminal Md displays the mobile devices Me1 to Me4 on, for example, a work map on the display unit 31 (step S65). The work map may be a diagram similar to the content illustrated in FIG. 20, for example.

Next, it is detected that an abnormality has occurred in the specific area Ar of the work monitoring area illustrated in FIG. 20, for example, by analyzing the captured image of the monitoring camera Cm (step S66). This monitoring process and detection process may be executed by a separately installed control device not shown, or may be executed by the control device Ct. The management terminal Md that has received the abnormality detection information specifies the mobile device Me located near the specific area Ar by the specifying process of the control unit 32 or by the user's operation (step S67). In the example shown in FIG. 20, the mobile device Me4 corresponds to the mobile device Me4. Information on the identified mobile device Me4 is transmitted from the management terminal Md to the control device Ct, and the control device Ct transmits a command to notify the abnormality to the lighting fixture L near the mobile device Me4 (step S68). In the example shown in FIG. 20, the lighting fixture L9 corresponds to this. The abnormality notification data is transferred from the lighting fixture L1 to the lighting fixture L9 via the communication network Cn1 (step S69). The lighting fixture L9 that has received the abnormality notification data performs abnormality notification lighting based on the abnormality notification data (step S70). This abnormality notification lighting may be, for example, blinking lighting different from the normal lighting state, lighting in a color indicating an abnormality, or the like. This abnormality notification lighting notifies workers and equipment managers located in the vicinity of the specific area Ar of the abnormality.

FIG. 23 shows different examples of abnormality notification. When steps S66 and S67 described above are executed, the control device Ct creates a command to leave the abnormality in the mobile device Me4 located near the specific area Ar of the work monitoring area, and notifies the abnormality via the communication network Cn1. It is transmitted as data (step S71). The lighting fixture L1 that has received the abnormality notification data transfers the abnormality notification data via the communication network Cn1 (step S72). The lighting fixture L9 receives the transferred abnormality notification data, converts it into the second protocol, and transmits it via the communication network Cn2. Mobile device Me4 receives the abnormality notification data from lighting fixture L9 via communication network Cn2. In addition to the transmission from the lighting fixture L9, the lighting fixture L1 etc. can transmit abnormality notification data to the communication network Cn2, and the mobile device Me can transmit the abnormality notification data transmitted from the lighting fixture L other than the lighting fixture L9. may be received via the communication network Cn2. The mobile device Me that has received the abnormality notification data executes an abnormality notification process. Examples of the abnormality notification processing include processing such as sounding a buzzer or displaying a message or icon indicating an abnormality on the display unit 51. Through this abnormality notification process, the worker and equipment manager wearing the mobile device Me4 are notified of the abnormality.

According to this embodiment as well, interference of beacon signals can be suppressed and position information of a mobile device can be acquired more accurately. Furthermore, by using the illumination system A6, users (workers) near the specific area Ar where an abnormality has occurred can be directed to the specific area Ar more quickly. This is preferable for improving work efficiency.

<Seventh embodiment>
24 to 29 are a system configuration diagram, a schematic layout diagram, a block diagram, and a sequence diagram of a lighting system according to a seventh embodiment of the present invention. The lighting system A7 of this embodiment includes a plurality of sensor devices Es. In the example shown in FIG. 25, a plurality of sensor devices Es are arranged. Furthermore, the lighting system A7 includes a plurality of mobile devices Me. The plurality of mobile devices Me of this embodiment are configured as mobile terminals held by a user in a place where a plurality of lighting fixtures L are arranged. In the same figure, for convenience of explanation, an example will be explained in which nine lighting fixtures L1 to L9, four mobile devices Me1 to Me4, and three sensor devices Es1 to Es3 are provided, but in a larger scale lighting system A7. In this case, the number of the plurality of lighting fixtures L becomes significantly large, and may exceed 100, for example. Moreover, the number of multiple mobile devices Me and multiple sensor devices Es may also significantly increase.

[Sensor equipment Es]
The sensor device Es is a device that measures a physical quantity related to the environment in which it is installed and transmits the measurement result by wireless communication. FIG. 26 is a block diagram of the sensor device Es. The sensor device Es of this embodiment includes a sensor section 41, a control section 42, a storage section 43, a wireless communication section 44, and a power supply section 45. The specific configuration of the sensor device Es is not limited in any way, and in addition to the configuration installed as a dedicated device, it can also be used in buildings to which the lighting system A7 is applied (office buildings, logistics equipment, stores such as commercial facilities, condominiums, etc.). It may also be in the form of a control switch for air conditioning equipment, lighting equipment, etc. installed in a residential building, etc.).

In the following description, when describing the general configuration of the sensor device Es, it will be referred to as a sensor device Es, and when distinguishing between a plurality of sensor devices Es, symbols such as sensor device Es1, sensor device Esn, etc. will be used as appropriate. be. The plurality of sensor devices Es1 and sensor devices Esn may each have the same configuration, may have a part in common with each other, or may have mutually different configurations. In the following description, unless otherwise specified, an example will be described in which the plurality of sensor devices Es1 and Esn have the same configuration.

The sensor unit 41 functions to measure physical quantities related to the environment of the sensor device Es. The functions of the sensor section 41 are not particularly limited, and include various functions such as a temperature sensor, humidity sensor, illuminance sensor, human sensor, and air volume sensor. The measurement principle of the sensor section 41 is not limited in any way, and may include a non-contact method using an optical method or an electromagnetic method, a contact method, or a method of measuring by monitoring the state of a specific part built into the sensor section 41. , various methods can be adopted.

The control unit 42 is for controlling each part of the sensor device Es. The specific configuration of the control unit 42 is not particularly limited, and includes, for example, a CPU. The storage unit 43 is for storing information such as programs and setting conditions necessary for controlling the control unit 42, and is made of, for example, a semiconductor memory.

The wireless communication unit 44 is for performing wireless communication with the corresponding lighting fixture L using the above-mentioned second protocol. The lighting fixture L having the second wireless communication unit 142 and the corresponding sensor device Es construct a communication network Cn2.

In this embodiment, the sensor device Es has a unique device ID. A specific example of the device ID is not limited at all, and for example, a MAC (Media Access Control) address is used. Note that the device ID may be stored in the wireless communication unit 44 or, for example, in the storage unit 43.

The power supply section 45 is for supplying power necessary for operation to the sensor section 41, the control section 42, the wireless communication section 44, and the like. The power supply section 45 is, for example, a device having a function as an AC/DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, or the like, or a rechargeable battery.

When the request signal (transfer signal) received from the corresponding lighting fixture L via the communication network Cn2 includes the device ID of its own device, the wireless communication section 44 transmits the request signal to the control section 42. The control unit 42 transmits a measurement request to the sensor unit 41 in accordance with the request signal. The sensor section 41 outputs the measured value obtained as a result of the measurement to the control section 42 . The control unit 42 generates measurement data including the device ID, the position information of the sensor device Es, the type of the sensor device Es, the unit of measurement data, the measurement value, the measurement time (time stamp), etc., and transmits it from the wireless communication unit 44. do.

Next, the operation of the lighting system A7 will be described below with reference to FIGS. 27 to 29.

In the lighting system A7, for example, through steps S1 to S5 in the lighting system A1 described with reference to FIG. 8, each of the mobile devices Me1 to Me4 acquires its own position information, as shown in FIG. The position data Dp is transmitted (steps S81, S82). For example, position data Dp4 from mobile device Me4 is sent to lighting fixture L9 (step S81), and position data Dp1 of mobile device Me1 is sent to lighting fixture L1 (step S82). The lighting fixture L9 transfers the position data Dp4 to the lighting fixture L1 (step S83). In this embodiment, the lighting fixture L1 receives all of the position data Dp1 to Dp4 from the mobile devices Me1 to Me4 (step S84). Then, the position data Dp1 to Dp4 are collectively transferred to the control device Ct (step S85). The control device Ct obtains the positions of the mobile devices Me1 to Me4 by receiving the position data Dp1 to Dp4 (step S86).

Next, as shown in FIG. 28, measurement processing is performed using the sensor device Es (steps S87 and S88). The measurement process by the sensor device Es may be performed at a predetermined time or time interval by each sensor device Es. Alternatively, for example, a request from the management terminal Md is transmitted to a nearby lighting fixture L via a communication network Cn1 constructed by a control device Ct and a plurality of lighting fixtures L, and transmitted to each sensor device via a communication network Cn2. This may be executed by receiving the information from Es.

For example, when each sensor device Es recognizes that the device ID that specifies the operation target included in the request data is the device ID of its own device, it performs processing according to the supplied data. In this embodiment, the sensor unit 41 of the sensor device Es3 is a temperature sensor and a humidity sensor, and measures the temperature and humidity of the environment in which the sensor device Es3 is installed. Next, the control unit 42 of the sensor device Es3, for example, the device ID of the sensor device Es3, the position information of the sensor device Es3, the type of the sensor device Esn, the unit of measurement data, the measurement value acquired from the sensor unit 41, the measurement time ( measurement data Dm3 including a time stamp) and the like are generated and transmitted from the wireless communication unit 44 via the communication network Cn2 (step S87). Similarly, the sensor device Es1 generates measurement data Dm1 and transmits it via the communication network Cn2 (step S88). The lighting fixture L9 that has received the measurement data Dm3 converts the measurement data Dm3 into transfer data Dt, and transfers it to the lighting fixture L1 via the communication network Cn1 (step S89). The lighting fixture L1 receives the measurement data Dm1 to Dm3 or the corresponding transfer data Dt (step S90). Then, the measurement data Dm1 to Dm3 are collectively transferred to the control device Ct (step S91). The control device Ct compares the measured values such as temperature and humidity contained in the measurement data Dm1 to Dm3 with a predetermined table stored in the storage unit 23 of the control device Ct, as necessary. A WBGT (Wet Bulb Globe Temperature) value is calculated for each location where each of the sensor devices Es1 to Es3 is installed (step S92).

Next, as shown in FIG. 29, the control device Ct determines, for example, the safety level of the user (worker) at each location based on the WBGT value at each location where the sensor devices Es1 to Es3 are installed. If the WBGT value of a certain location is such that it is determined that it is not desirable to continue the work, the area is identified as requiring notification. In this embodiment, the specific area Ar4 is specified as the target area (step S93). Then, the control device Ct identifies the mobile device Me4 as the mobile device Me closest to the specific area Ar4 by comparing the position information of the mobile devices Me1 to Me4 with the position of the specific area Ar4 (step S94). Then, abnormality notification data targeted at the mobile device Me4 is transmitted (step S95). This abnormality notification data is transferred by the lighting fixture L1 (step S96), and is received by the lighting fixture L9. The abnormality notification data is then transmitted from the lighting fixture L9 to the mobile device Me4 via the communication network Cn2. The mobile device Me4 notifies the user of the abnormality based on the content included in the received abnormality notification data (step S98). The mobile device Me4 performs an abnormality notification process such as sounding a buzzer or displaying a message or icon indicating an abnormality on the display unit 51, for example. Through this abnormality notification process, the user or worker wearing the mobile device Me4 is notified of the abnormality. In addition to these processes, the control device Ct also detects an abnormality for a predetermined period of time (for example, 15 minutes) in a region where abnormality notification is required based on the WBGT value, and a certain mobile device Me remains in the same position. If this is the case, it may be assumed that this user is in poor physical condition, and a separate notification process may be performed to notify that another worker is directed.

According to this embodiment as well, interference of beacon signals can be suppressed and position information of a mobile device can be acquired more accurately. Furthermore, the safety level of the area can be evaluated based on the WBGT value, etc., and the safety of users (workers) can be more reliably ensured. Further, for example, if a specific worker remains in the specific area Ar4 where an abnormality has been reported for a predetermined period of time or more, other workers can be directed to the specific area Ar4 more quickly.

The lighting system according to the present invention is not limited to the embodiments described above. The specific configuration of each part of the lighting system according to the present invention can be changed in design in various ways. In addition, design changes can be made that combine the above-described embodiments.

A1, A4, A5, A6, A7: Lighting system 11: Light source section 12: Control section 13: Storage section 14: Wireless communication module 15: Power supply section 21: Display section 22: Control section 23: Storage section 24: Wireless communication section 25: Power supply section 31: Display section 32: Control section 33: Storage section 34: Wireless communication section
35: Power supply section 41: Sensor section 42: Control section 43: Storage section 44: Wireless communication section 45: Power supply section 51: Display section 52: Control section 53: Storage section 54: Wireless communication section 55: Power supply section 61: Relay switch 62: Control unit 64: Wireless communication unit 65: Power supply unit 141: First wireless communication unit 142: Second wireless communication unit Ar: Specific area Cm: Surveillance camera Cn1, Cn2, Cn21, Cn22: Communication network Cn3: Communication network Cn11 , Cn12: Cluster Ct: Control device Dm1, Dm2, Dm3: Measured data Dp, Dp1, Dp2, Dp3, Dp4: Position data Dt: Transfer data Es, Es1, Es2, Es3, Esn: Sensor equipment L, L1, L11, L12, L13, L2, L21, L22, L23, L3, L4, L5, L6, L7, L8, L9: Lighting fixture Ln: Lighting fixture Md: Management terminal Me, Me1, Me2, Me3, Me4: Mobile device Up: Power supply unit Ut: Clock unit

Claims (4)

A lighting fixture used in a lighting system capable of acquiring location information of mobile devices, the lighting equipment comprising:
A light source part,
a control unit;
power supply section,
a first communication unit that performs wireless communication with the control device or other lighting equipment ;
a second communication unit that outputs a beacon signal to the mobile device,
receiving a setting signal from the control device or the other lighting equipment by the first communication unit, and setting an output interval of the beacon signal from the second communication unit based on the setting signal;
The wireless communication by the first communication unit and the wireless communication by the second communication unit have different communication timings,
The first communication unit and the second communication unit are lighting fixtures that alternately perform wireless communication . The lighting fixture according to claim 1 , wherein the first protocol by the first communication unit and the second protocol by the second communication unit have different frequencies. a plurality of lighting fixtures each having a wireless communication module that transmits a beacon signal containing identification information of the lighting fixture;
A lighting system capable of acquiring position information of a mobile device , comprising: a control device that controls the plurality of lighting fixtures;
The plurality of lighting fixtures include a first lighting fixture and a third lighting fixture,
The first lighting fixture intermittently transmits the beacon signal using the wireless communication module based on a setting signal from the control device,
The third lighting fixture has a non-transmission mode in which the wireless communication module does not transmit the beacon signal based on the setting signal from the control device,
The first lighting fixture includes a light source section, a control section, a power supply section, a first communication section that performs wireless communication with the control device or the third lighting fixture, and a second communication section that outputs a beacon signal to the mobile device. It has a communications department,
receiving a setting signal from the control device or the third lighting fixture by the first communication unit, and setting an output interval of the beacon signal from the second communication unit based on the setting signal;
The wireless communication by the first communication unit and the wireless communication by the second communication unit have different communication timings, and the first communication unit and the second communication unit perform their respective wireless communications alternately. lighting system. The lighting system according to claim 3, wherein the first protocol by the first communication unit and the second protocol by the second communication unit have different frequencies.

Images