KR100960675B1 - High-efficient sensor node apparatus of on-the-spot in protocol for processing multi-stages - Google Patents

Abstract

Field sensor node device for the high-efficiency multilevel processing protocol of the present invention, it is possible to wirelessly communicate data according to a specific protocol, and by simply configured and configured to be easily used, such as easy to retrieve and carry it as needed by carrying it in the required position It is a sensor node device that can be used to safely monitor and monitor the safety condition of a site by detecting the actual working condition, situation or environment of the site.

The present invention includes a sensing module for detecting a state of a physical quantity preset in the device to determine the conditions of the work site in a state where it is installed at a predetermined position of the work site; A communication module for performing bidirectional communication between other terminal nodes on a wireless sensor network within a predetermined period of an active period during communication according to a high efficiency multiprocessing protocol system; A storage module for storing data generated in the sensing amount and the communication and the operation and control of the respective configuration modules; Calculates and converts the physical quantity sensed by the sensing module according to the scheme of the highly efficient multiprocessing protocol set and programmed, and receives data from the respective modules to be different from the wireless sensor network according to the high efficiency multilevel processing protocol scheme. A central control module which controls to perform bidirectional communication between terminal nodes and processes according to control from a central management apparatus; Each of the configuration modules follows a scheme of a high efficiency multiprocessing protocol for communicating data with high efficiency.

Therefore, the present invention detects the initial fire of the site according to electricity and sparks, such as welding through the sensing of ambient temperature, smoke, overcurrent, etc. in the field of work and industry, and through the early response and rapid propagation when an abnormality occurs, such as a fire It provides the effect of minimizing the scale of damage through coping with various disaster situations.

Description

High-efficient sensor node apparatus of on-the-spot in protocol for processing multi-stages}

According to the present invention, the data can be wirelessly communicated according to a specific protocol, and can be easily installed at a required location and immediately retrieved as needed, thereby configuring the system to detect work conditions, situations or environments of actual sites. The present invention relates to a field sensor node device for a high-efficiency multiprocessing protocol that can be used to safely manage and monitor the safety status of a site.

This field sensor node device is to improve and apply some invention technology already filed by a co-applicant of the present application.

With the development of microprocessors and wireless communication technologies, wireless sensor networks are being developed that automatically detect in the wireless state and deliver the detected contents to a central control device for processing.

In this wireless sensor network, sensor nodes are installed at sites that want to grasp the actual situation, such as health, military, home network, environmental monitoring, factory management, and disaster monitoring, and the necessary information is formed to form a communication network. It is important.

In addition, in the wireless sensor network, due to the characteristics of the network, the information collected from the sensor node is valid within a certain time, so it is important that the information of the sensor node is accurately delivered to the data collector within a limited time, and given energy consumption. It is required to design the protocol to meet the maximum end-to-end delay condition.

From this point of view, protocols for the sensor network environment have been proposed mainly for each layer. Among them, energy-efficient protocols in the medium access control (MAC) and network layers of the sensor network have been proposed. Energy efficient protocols have also been proposed in ad hoc sensor networks operating on a distributed ad hoc basis among wireless sensor networks.

However, the conventional medium access control (MAC) type protocol is less energy efficient than other protocols. To solve this problem, lowering the duty cycle causes a network delay. In addition, the MAC type protocol has a number of problems, such as low stabilization rate of the communication network when using a limited power source such as a battery, which is a relatively common situation of the wireless sensor network.

In connection with these problems, the conventional "real-time wireless sensor network communication method having a linear structure (Korean Patent No. 10-656385)" has been proposed a technology for a linear communication protocol applied to the wireless sensor network However, there is a problem that downstream of transmitting data or commands is not smooth.

In order to solve the problem of the downstream in the conventional 'real time wireless sensor network communication method having a linear structure (Korean Patent No. 10-656385)' filed by the co-applicant of the present application 'bidirectional Wireless sensor network having a linear structure capable of data communication and its method (Korean Patent Application No. 2008-8935).

FIG. 6 is a view illustrating progress of downlink data communication in a conventional 'wireless sensor network having a linear structure capable of bidirectional data communication', and FIG. 7 is a diagram illustrating progress of uplink data communication, respectively.

As shown, the conventional 'wireless sensor network having a linear structure capable of bidirectional data communication' is linearly connected from the sink node to the terminal node by connecting all the configuration nodes with one upper node and one lower node. Each node sequentially repeats an active section 600, 700 and an inactive section 650, 750 having a predetermined time interval, and the active section 600, 700 is a data / command from a sink node to a terminal node. Downlink active periods 610 and 710 for transmitting the data, idle periods 620 and 720, and uplink active periods 630 and 730 for transmitting data / commands from the terminal node to the sink node, the downlink Active sections 610 and 710 and uplink active sections 630 and 730 are sequentially configured with RX, TX, and ACK, respectively, and bidirectional communication between the sink node and the terminal node within a single period of the active section 600 and 700. Can be performed.

However, even if the link to the two nodes is blocked or abnormally changed, the link recovery is difficult.

In addition, in the wireless sensor network, it is important that the sensed (sensed) data is stably transmitted to the central management control device for smooth wireless communication, and control commands generated through the communication are smoothly communicated with each other.

For example, there is a lot of use of paint, electricity, welding, etc. in the conventional industry or on the work site, so it is always exposed to fire, and most of the systems that can detect fire in advance are fixedly installed on the ceiling, so it is possible to fire in large industrial sites. It is a situation that requires a long time to detect, there is a problem that even if the fire is detected, the fire is already spread to increase the damage.

In addition, disasters and accidents, such as fire, if the initial response to minimize the size of the damage, as the response time is delayed, the magnitude of the damage increases, the situation is urgently required measures to solve this problem.

An object of the present invention for solving this problem, the sensing module for detecting the state of the physical quantity preset in the device to determine the conditions of the work site in a state installed at a predetermined position of the work site; A communication module for performing bidirectional communication between other terminal nodes on a wireless sensor network within a predetermined period of an active period during communication according to a high efficiency multiprocessing protocol system; A storage module for storing data generated in the sensing amount and the communication and the operation and control of the respective configuration modules; Calculates and converts the physical quantity sensed by the sensing module according to the scheme of the highly efficient multiprocessing protocol set and programmed, and receives data from the respective modules to be different from the wireless sensor network according to the high efficiency multilevel processing protocol scheme. A central control module which controls to perform bidirectional communication between terminal nodes and processes according to control from a central management apparatus; Each of the constituent modules according to a scheme of a high efficiency multiprocessing protocol for communicating data with high efficiency; The high efficiency multilevel processing protocol includes an active duration for transmitting and receiving data to and from a higher node and a lower node, and the active period includes an uplink interval for transmitting data and instructions from a terminal node to a sink node, and a sink node. A downlink section for transmitting data and instructions from the terminal to the terminal node; Each of the downlink section and the uplink section includes a second receive slot (RX2), a first receive slot (RX1), a transmit slot (TX), and a first receive section (RX1). A first acknowledgment slot ('ACK1') and a second acknowledgment slot ('ACK2') are sequentially configured ; Immediately after each of the above sections by having a multi-stage processing slot (MSPS); It is to provide a field sensor node device for a high-efficiency multilevel processing protocol, characterized in that to grasp and transmit information on the specified physical quantity at the location of the work site.

In the present invention, the sensing module, the physical quantity for the current, temperature, smoke as a predetermined physical quantity in the device for determining the conditions of the work site for sensing whether the fire on the site; The central control module can update the firmware and monitor the status through the management of a web page or its own communication network according to the online connection without direct replacement.

In addition, it provides a detailed description of each component and each in the field sensor node device for the high-efficiency multilevel processing protocol of the present invention according to each of the above objects, each of these configurations and technical details are each carried out individually or in combination with each other It is possible.

Therefore, the present invention detects the initial fire in the field using electricity and sparks, such as welding, through sensing of ambient temperature, smoke, overcurrent, etc. at work and industrial sites.

In addition, by monitoring the information on the site according to the collected setting conditions, and promptly responding and spreading the initial measures and alarms in the event of abnormal signs, and dealing with various disasters such as fire, the magnitude of the damage increases as the response time is delayed. Minimize the amount of damage.

In addition, two-way communication enables the diagnosis of the status of each device at a remote location, and it is not fixed after installation once. It also enables efficient system management by changing the operation of wireless devices through two-way communication.

In addition, it is easy to install the system by portable and convenient maintenance is possible without additional installation or removal of existing facilities when adding additional equipment or changing system by wireless system.

Since the present invention can be used in all industrial sites and general facilities, as well as fire detection as well as indoor environment measurement, it is expected to be extended to various markets not limited to firefighting.

Hereinafter, with reference to the drawings will be described in detail the field sensor node device for the high-efficiency multilevel processing protocol of the present invention.

1 is a block diagram of a field sensor node device for a high-efficiency multilevel processing protocol of an embodiment of the present invention, Figure 2 is a view for explaining the communication and operation process in the overall management system using the field sensor node device of FIG. .

As shown in FIG. 1, the field sensor node device 10 for the high-efficiency multilevel processing protocol according to the present embodiment includes a sensing module 110 that detects a state of a physical quantity set in a state of being installed at a predetermined position of a work site. ; A communication module 120 for performing bidirectional communication between other terminal nodes within a predetermined period within an active period for communication; A storage module 130 for storing data generated in a sensing amount and communication and calculation and control process through each of the configuration modules; Calculates and converts the physical quantity sensed by the sensing module 110 according to a programmed high efficiency multilevel processing protocol, and receives data from the respective modules to perform control according to the high efficiency multilevel processing protocol system And a central control module 140 for receiving and processing control from the central management apparatus; Each of the constituent modules according to a scheme of a high efficiency multiprocessing protocol for communicating data with high efficiency; The high efficiency multilevel processing protocol includes an active duration for transmitting and receiving data to and from a higher node and a lower node, and the active period includes an uplink interval for transmitting data and instructions from a terminal node to a sink node, and a sink node. And a downlink section for transmitting data and instructions from the terminal node to the terminal node, wherein the downlink section and the uplink section each include a second receive slot (RX2) and a first receive slot (First Receive Slot). 'RX1', a transmission slot (TX), a first acknowledgment slot (ACK1), a second acknowledgment slot (ACK2), and the like. Immediately after each of the above sections by having a multi-stage processing slot (MSPS); It is characterized by grasping and transmitting information about the specified physical quantity at the location of the work site.

As will be described later, the field sensor node device 10 of the present embodiment can manage and prevent fire in the field, and in this case, the sensing module 110 is configured to detect a physical quantity for current, temperature, and smoke.

And the total field management system (TMS) of the present embodiment using the sensor node device 10 described above as shown in FIG. 2, the integrated server 20, the gateway 15 to connect the middle, and A plurality of sensor node device 10 according to the present embodiment, and the sink node device 10s is connected to the middle of the network.

The field sensor node device 10 for the high-efficiency multilevel processing protocol of the present embodiment is one component constituting the overall system as shown in FIG. 2, and works in the field, such as flame, image, smoke, temperature, smoke, humidity, and the like. Or an apparatus capable of carrying out the necessary control and transmitting the sensed data for detecting the abnormality of the industrial site to the integrated server 20 which is the central management apparatus through the system of the high efficiency multilevel processing protocol according to the present embodiment. to be.

The integrated server 20 according to the present embodiment performs data communication wirelessly with the sink node device 10s or the sensor node device 10 according to the system of the high efficiency multilevel processing protocol, and grasps the abnormal state of the work site. Of course, the site status is identified and managed, and in case of an abnormal situation, for example, when the fire occurs at the work site, the necessary management such as the connection with the fire fighting system or the operation of the emergency fire fighting facility is performed and controlled.

Also, a sink node 10s is a node that enables a bidirectional network of a wireless sensor network. In the sink node 10s, a plurality of sensor node devices 10 are positioned to configure the site management system TMS.

Each component of the TMS can communicate in accordance with the above-described high efficiency multiprocessing protocol so that more efficient monitoring and management can be performed.

3 is a view for explaining the progress of the downlink data communication in the field sensor node device 10 for the high-efficiency multilevel processing protocol, Figure 3 is a communication proceeding in the three sensor node devices 10 to identify the important concept The explanation focuses on the process.

4 is a view for explaining the progress of the uplink data communication in the field sensor node device 10 for the high efficiency multilevel processing protocol of FIG.

As shown, the structure of the high efficiency multilevel processing protocol 30 applied to the sensor node device 10 of this embodiment is largely divided into an active section 30a and an inactive section 30b, and the active section 30a is again It is divided into a downlink section 310 and an uplink section 330.

Each of the downlink section 310 and the uplink section 330 may be a main content operated at the beginning of each section, and a second receiving section sequentially configured at the same time may be configured as a second receiving slot (311m). 331m, hereinafter 'RX2'), First Receive Slot (RX1 ', 312m, 332m), Transmit Slot (TX), 313m, 333m, First Acknowledge Slot; 'ACK1', 314m, 334m), and second acknowledgment slot (Second Acknowledge Slot; 'ACK2', 315m, 335m) can be largely divided into the second stage of each section of the MSPS (multi-stage processing slot) It has a structure to be provided.

As shown in FIG. 4, the present high-efficiency multiprocessing protocol 30 will be described in detail with reference to reference nodes (reference stages and n stages) as reference, and downlink sections 310 of the reference node active sections 30a will be described. And in the uplink section 330, RX2 (311, 331) is the main RX2 (311m, 331m) and the above treatment RX2 (311p, 331p), * RX (312, 332) is the main RX (312m, 332m) ) And above processing RX (312p, 332p), * TX (313, 333) as main TX (313m, 333m) and above processing TX (313p, 333p), * ACK1 (314, 334) as main ACK1 (314m) , 334m) and the above processing ACK1 (314p, 334p), * ACK2 (315, 335) is divided into the main ACK2 (315m, 335m) and the above processing ACK2 (315p, 335p), respectively.

In each of these sections, the 'main' section represents an ideal part where communication is immediately performed when the field sensor node device 10 for the high efficiency multiprocessing protocol is performed. When the communication is made, the communication proceeds ideally without any problem.

However, in the communication process of the wireless sensor network, communication may not be performed due to various factors. As described above, in order to consider and prepare for the problem that communication is not normally performed, the high efficiency multiprocessing protocol of the present embodiment 30 was developed.

That is, when reception of the main RX2 (311m) of the downlink section 310 is not normally performed, the reference node (n stage) of the upper node (n + 1 stage) is transferred to the upper node (n + 1 stage) through the successive process of successive RX2 (311 p). A signal to be received is requested through the progress of the main RX2 (311m). At this time, if the reference node (n stage) cannot receive a signal through the upper node (n + 1 stage), the next higher node (n +) is requested. If the signal is not received through the next higher node (n + 2 stage), the progression of this principle is the next higher node (n + 3 stage) ... etc. It takes a multi-stage processing slot (MSPS) structure that continues processing in multiple stages.

However, such progress is a matter to be considered in terms of communication progress and efficiency, and although it can be theoretically continued, in actual communication situation, it proceeds to the upper node (n + 1 stage) or the next higher node (n + 2 stage). It is preferable.

As will be described later, in the high-efficiency multiprocessing protocol 30 of this embodiment, if communication between each node (node device) is not normally performed, there is a feature of proceeding a recovery process excluding an intermediate node where communication is not made.

This recovery process differs from the concept of multi-upper stage request / processing described above.

In the recovery process to be described later, the process of adjusting the synchronization state is separately performed while excluding the intermediate node that is not in communication. However, the multi-processing MSPS of the present embodiment deliberately excludes the intermediate node or immediately proceeds without adjusting the synchronization state. If a request is made to a node and a normal process is performed, such as receiving a signal in the process of requesting to a plurality of higher nodes (set in consideration of communication efficiency), the communication is initially intended without any special execution process. The normal process will continue.

As a result, the high-efficiency multiprocessing protocol 30 of the present embodiment not only makes the process very efficient, but this efficiency also reduces the delay in communication and at the same time increases the accuracy.

And this efficiency acts as a direct factor that can respond quickly to accidents that may occur at work or industrial sites, thereby maintaining the excellent communication efficiency of the wireless sensor network.

The field sensor node device 10 for the high-efficiency multilevel processing protocol of this embodiment joins as a new node device under the control of the central integrated server 20 in the process of forming a network with other sensor node devices. It is possible to proceed with a terminal join.

In addition, the field sensor node device 10 for the high-efficiency multilevel processing protocol can proceed with recovery of the communication link in a state excluding the broken node (device) when an intermediate node (device) in the wireless sensor network is broken. Do.

The field sensor node device 10 for the high-efficiency multilevel processing protocol of this embodiment is a field sensor node device through the management of a web page or its own communication network according to online, that is, the Internet connection, without a direct replacement for the field sensor node device 10. It is possible to update the firmware of (10) and monitor the status.

That is, the model name and the device version of the sensor node device 10 are identified in the process of communicating with the network management integrated system and the field sensor node device 10 for the high efficiency multilevel processing protocol, and the corresponding model of the sensor node device 10 is identified. If there is a new firmware that is version-up in the system, it is possible to download and install the new firmware.

In the field sensor node device 10 for the high efficiency multilevel processing protocol, a specific area of a predetermined memory element included in the field sensor node device 10 through the wireless sensor network according to the high efficiency multilevel processing protocol 30 described above. When the firmware data is received and a specific value for firmware upgrade is written in a device such as an externally accessible register, the field sensor node device 10 automatically uses the firmware data recorded in a specific area of the memory device. The firmware of the field sensor node device 10 itself recorded in a device such as a flash memory is updated.

FIG. 5 is a view for explaining a process of detecting a disaster occurrence in a workplace using the field sensor node device for the high efficiency multilevel processing protocol of FIG. 1.

In the case of constructing a TMS that manages an industrial site or a work site by using the field sensor node device 10, a problem occurs in the field by detecting and analyzing various site physical quantities. Supervision can be made automatically.

This section focuses on fire management, which is of particular interest and important management supervision, especially in the supervision of site situations. In addition, it can be configured to detect a variety of on-site physical quantities for the fire management and prevention, the on-site sensor node device 10 of the present embodiment is a situation that the fire is managed through the detection of physical quantities for current, temperature, smoke. The explanation is centered.

The work site F is divided into a number of compartments, such as a work room (F01), a freezer room (F02), a machine room (F03), and an office (F04), and the work is to be carried out wherever necessary. Although it may be possible, the following description will focus on the situation of working in the work room F01.

In addition, each compartment such as a work room (F01), a freezing chamber (F02), a machine room (F03), an office (F04) of the site (F) may receive a lot of heat, for example, a power outlet, and a lot of heat, which may cause a fire. Install the field sensor node device (10) at a number of potential fire locations, such as near electric lamps, areas that can receive a lot of heat at work sites, and areas where electrical wiring is concentrated or old wires are out of the walls of the compartment. It is desirable to manage.

In this situation, while operating the field management system (TMS) in operation, the current flowing from the plurality of field sensor node devices 10 installed in the field F to the corresponding outlet, or the temperature around the outlet or the outlet In addition, the detection of the amount of smoke, which is another measurement physical quantity, is performed, and the detected situation is continuously transmitted to the central integrated server 20. The central integrated server 20 is increased in more than the set value in the process of continuously analyzing the measured values for the physical quantity received from the plurality of field sensor node devices 10, the red in the drawing through the analysis according to the set conditions [1. Abnormal symptom detection] as described above.

In addition, as shown in the field (F) it can also be configured in connection with the number of intelligent alarm node device (12) required separately from the field sensor node device (10).

Then, when the abnormal symptoms are determined by determining the 'abnormal symptoms', [2. abnormal symptoms alarm] is performed in the intelligent alarm node device 12 associated with the field sensor node device 10, these alarms are sequential Anywhere, anywhere, broadcasts or alarms are reported to indicate that there is a fire or signs of it occurring. Therefore, if such a situation is minor, it is possible to handle the fire by immediately responding to the situation, but if the situation is urgent, emergency measures such as operating a sprinkler or contacting a fire department or emergency rescue agency immediately.

This abnormal symptom process is longer in the process of detailing this description, but in reality, all communication and judgment decisions are completed and a warning is performed at the same time, so a very short time.

Apart from this progress, the field sensor node device 10 of the present embodiment is configured to be an alarm device or a warning broadcast, so that the physical quantity being sensed through its own setting separately from the progress with the central integrated server 20. Depending on the set state, it is possible to make a broadcast or alert itself, and at the same time, it is possible to communicate with the central integrated server 20. In addition, such a situation may also be communicated to other field sensor node device 10 so that the alarm sounds and broadcasts as a whole.

In addition, in the present embodiment, as described above, an example of measuring and managing current, temperature, and smoke as a measurement physical quantity is shown. However, in the construction of the field sensor node device 10, one, one or more or all of the above is used. It can also be set according to individual or complex conditions.

In addition, the field sensor node device 10 of the present invention is portable and easy to install the system, it is very convenient because there is no additional installation or removal of existing facilities in addition to additional equipment or system change as a wireless system, convenient maintenance is also possible.

In addition, by detecting and transmitting not only current, temperature, and smoke, but also images and images, the system automatically manages the situation of the site and warns when an abnormality is detected. Can be prevented.

In addition, the present invention can install and control various facilities for the convenience of the user or administrator in addition to the apparatus or system described above. In the present description, the present invention has been described with reference to specific embodiments, but the present invention is not limited thereto and may be variously implemented by those skilled in the art without departing from the concept of the present invention. In addition, these various implementations will belong to the scope of the present invention.

1 is a block diagram of a field sensor node device for a high-efficiency multilevel processing protocol of an embodiment of the present invention.

Figure 2 is a view for explaining the communication and operation process in the overall management system using the field sensor node of Figure 1;

3 is a view for explaining the progress of downlink data communication in the field sensor node device 10 for the high efficiency multilevel processing protocol of FIG.

4 is a view for explaining the progress of the uplink data communication in the field sensor node device 10 for the high efficiency multilevel processing protocol of FIG.

5 is a view for explaining the process of detecting the occurrence of a disaster at the work site applying the field sensor node device for the high-efficiency multilevel processing protocol of FIG.

6 is a view showing the progress of downlink data communication in the conventional 'wireless sensor network having a linear structure capable of bidirectional data communication'.

7 is a view showing the progress of the uplink data communication in the conventional 'wireless sensor network having a linear structure capable of two-way data communication'.

          <Explanation of symbols for the main parts of the drawings>

TMS: On-site Comprehensive Management System

10: Field sensor node device

110: sensing module 120: communication module

130: storage module 140: central control module

10s: sink node device

15: gateway

20: integrated server

30: high efficiency multi-processing protocol

30a: active section 30b: inactive section

310: downlink section 330: uplink section

Claims (3)

In the device for grasping the conditions of the workplace, A sensing module configured to detect a state of a physical quantity preset in the device in order to determine the condition of the work site in a state where it is installed at a predetermined position of the work site; A communication module for performing bidirectional communication between different terminal nodes on a wireless sensor network within a predetermined period of an active period during communication according to the following high efficiency multilevel processing protocol scheme; A storage module for storing data generated in the sensing amount and the communication and the operation and control of the respective configuration modules; Calculates and converts the physical quantity sensed by the sensing module according to the scheme of the highly efficient multiprocessing protocol set and programmed, and receives data from the respective modules to be different from the wireless sensor network according to the high efficiency multilevel processing protocol scheme. A central control module which controls to perform bidirectional communication between terminal nodes and processes according to control from a central management apparatus; Each of the constituent modules according to a scheme of a high efficiency multiprocessing protocol for communicating data with high efficiency; The high efficiency multilevel processing protocol includes an active duration for transmitting and receiving data to and from a higher node and a lower node, and the active period includes an uplink interval for transmitting data and instructions from a terminal node to a sink node, and a sink node. A downlink section for transmitting data and instructions from the terminal to the terminal node; Each of the downlink section and the uplink section includes a second receive slot (RX2), a first receive slot (RX1), a transmit slot (TX), and a first receive section (RX1). A first acknowledgment slot ('ACK1') and a second acknowledgment slot ('ACK2') are sequentially configured ; Immediately after each of the above sections by having a multi-stage processing slot (MSPS); On-site sensor node device for a high-efficiency multilevel processing protocol, characterized in that for grasping and transmitting information on the specified physical quantity at the location of the work site. The method according to claim 1, wherein the sensing module On-site sensor node device for a high-efficiency multilevel processing protocol, characterized in that for detecting the fire in the field to detect the physical quantity for the current, temperature, smoke with the physical quantity preset in the device for grasping the conditions of the work site. The method of claim 1, wherein the central control module Field sensor node device for a high-efficiency multilevel processing protocol, characterized in that it is possible to update the firmware and monitor the status through the management of a web page or its own network according to the online connection without a direct replacement.

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