JP5406690B2 - Communication line linking device and telemetry system - Google Patents

Description

  A measurement terminal that can periodically acquire measurement data and transmit it using a communication line network, a communication line link device that communicates with a plurality of measurement terminals using a communication line network, and a plurality of communication terminals via a communication line link device The present invention relates to a telemetry system including a measurement host that collects measurement data from a measurement terminal and manages a measurement amount.

  In recent years, with the remarkable development of IT technology, we have collected measurement data of measuring instruments far from the control host of the control center by research and development of automatic meter reading equipment such as electricity, gas and water using the Internet or wireless equipment. Telemetry system to manage became known.

  In particular, as electricity regulations are relaxed, the number of power generation companies (IPPs) that supply wholesale power to power companies has increased, making it possible to freely purchase power from other than existing power companies. It was.

  In addition, deregulation not only provides the opportunity to purchase cheap electricity, but it also exhausts heat to factories and business offices with the development of technology that suppresses carbon dioxide emissions to prevent global warming. It has brought momentum to introduce power generation facilities such as power generation facilities, fuel cell power generation facilities, and solar power generation facilities. In addition, there is a movement among power generation companies to actively sell extra generated power. Along with such liberalization of power retailing, there is an increasing demand for providing a meter reading service for measuring a detailed amount of power, such as simultaneous monitoring of 30 minute values.

  Regarding a telemetry system that provides a meter-reading service, Patent Document 1 discloses a telemetry system that reads out data of watt-hour meters installed in each demand home while staying in a central control center using a no-ringing communication service of a fixed telephone. It is disclosed. However, in a system that performs remote meter reading using a fixed telephone line, connection work related to the fixed telephone line is necessary for remote meter reading, and the construction work is complicated.

  Therefore, in Patent Document 2, a PHS terminal (wireless device) that does not require telephone line construction is used to transmit data from the wireless device to the base station, and the base station uses the existing bidirectional CATV network to control the line. A telemetry system is disclosed that transmits to a device and transmits from a line control device to a measurement host of a power company. Furthermore, Patent Document 3 relates to a remote measurement system that reads the amount of power of a watt-hour meter and transmits it to a measurement host, which is easily compatible with communication via the Internet, and is a local information collection operation within the system. A telemetry system having high reliability and excellent security is disclosed.

JP-A-7-303152 JP 2001-266277 A JP 2002-325144 A

  As described above, in order for the control center to continuously measure at a predetermined time interval without using the PHS terminal or the mobile phone terminal that does not require telephone line construction, the communication is interrupted. It is necessary for the control center to perform remote measurement independently. Mobile phone terminals are free to move because they communicate using radio waves, and the communication networks used to communicate with such mobile phone terminals have a different mechanism from fixed telephone networks and Internet networks. Yes.

  A mobile phone network for communicating with mobile phone terminals includes base stations provided in various places for direct wireless communication with mobile phone terminals that can be moved, and mobile phone terminals that can wirelessly communicate with each base station. A location registration server that receives and manages the phone numbers and locations of the terminals, and a mobile communication switching center that connects the mobile phone terminals or between the mobile phone terminal and the fixed phone terminal based on information stored in the location registration server , Is provided.

  For example, in the case of a telemetry system capable of managing about 500 terminals per telemetry host, the number of mobile phone terminals is increased due to an increase in demand. For example, in the case of a system that can connect up to about 1000 terminals, the mobile phone network Due to restrictions due to the load concentration of the location registration server, there was a problem that even if a remote measurement host was added, calls with more than 1000 mobile phone terminals could not be made, and smooth measurement could not be performed. .

  Therefore, the telemetry system according to the present invention provides a telemetry system that can further increase the number of mobile phone terminals connected to the measurement terminals while avoiding the limitation of the mobile phone network that is one of general public lines. With the goal.

This onset Ming periodically acquires the measurement data, a measurement terminal that can transmit using a communication network, and passing ShinSo location in communication with a plurality of the measurement terminal using the communication network, the communication provided a measuring host for managing a metered amount by collecting measurement data from a plurality of the measurement terminal via the ShinSo location, to including the system, the communication line connection device used as the communication device, wherein communication line link apparatus, according to the measurement schedule of the measuring host has a connection time setting means for the time of connecting start to the communication line link apparatus in advance set in each said measurement terminal, the measurement terminals in advance communication the via the base station that has been carried out to connect the connection start to the communication line link apparatus to the communication line link apparatus at a preset time itself and the connection time setting means, a plurality of the measuring terminal At the same time Not to perform communication with one base station, the time to connect start the communication line link apparatus, characterized by preset to each of said measurement terminal. Here, the system is, for example, a general-purpose telemetry system that can be used telemetry generally be measured collectively electrically measured by remote measurement terminal, gas, water, and other physical quantities.

Further, the communication line connection device in the present invention desirably, the communication depending on the number of available processing the measuring terminal per unit time in the line link apparatus, each said measurement terminal connection start each said measured time to the terminal It assigns to. As described above, in order for the communication line linkage apparatus to acquire the measurement data from each measurement terminal without missing, the communication line linkage apparatus is assumed to have a load adjustment function.

Further, the communication line connection device in the present invention desirably, the prior measuring host collects measurement data from the measurement terminal via the communication line link apparatus, and the measurement terminal and the communication line link apparatus a connection confirming means for confirming the connection, if it is determined that the broken connection between the measuring terminal by the connection confirmation means that having a, and re-connecting means for connecting the connection start and continue the measurement terminal . In this way, not only one of the connection start from the measuring terminal to the communication line link apparatus, by are use to connect start to measure the terminal over a communication line link apparatus, it is possible to improve the reliability in communication connection with the Become.

Further, the communication line connection device in the present invention desirably, the measurement to the measurement terminal prior to receiving the measurement request from the host sends a measurement request, storage means for storing received measured data from the measuring terminal When, that having a, a relay means for transmitting to said measuring host after the stored measured data has been received measurement request from said measuring host. This relay means, for example, makes it possible to reduce the waiting time of the measurement host, reduce the load on the measurement host, increase the number of measurement terminals per measurement host, and reduce the overall system cost. The effect that it becomes possible is acquired .

Further, the communication line connection device of the present invention is desirably that having a measurement data transmitting means for transmitting the measurement data memorize the other measurement host. For example, the measurement data transmitting means that transmits to another measurement host provides an effect that the use of the measurement data can be expanded by facilitating the utilization of the measurement data.

  By using the telemetry system according to the present invention, there is an effect that it is possible to further increase the number of mobile phone terminals connected to the measurement terminals while avoiding restrictions on the mobile phone network.

It is a whole lineblock diagram showing the composition of the remote measurement system in this embodiment. In the embodiment of FIG. 1, it is a whole block diagram which shows the structure of the remote electric power meter-reading system which especially performs meter-reading of a watt-hour meter. 3 is a flowchart showing a flow of a series of processes for transmitting meter reading data of a watt-hour meter to a meter reading host by executing connection activation by a meter reading terminal in the embodiment according to the remote power meter reading system of FIG. In the embodiment related to the remote power meter reading system of FIG. 2, the connection start by the meter reading terminal is executed, the metering data is stored in the communication line cooperation device, and the meter reading data stored in response to the meter reading request of the meter reading host is stored in the meter reading host. It is a flowchart figure which shows the flow of a series of processes to transmit. It is explanatory drawing which represented the flow of a series of processes shown in FIG. 3 or FIG. 4 in the time table of 60 minutes per hour. It is explanatory drawing explaining the connection starting time of the meter-reading terminal shown in FIG. 3 or FIG. 2 is an embodiment (reference example) which is a reference for understanding the embodiment according to the present invention in the embodiment relating to the remote power metering system of FIG. 2, and is portable when executing connection activation by the communication line link device. It is explanatory drawing explaining the role of a telephone network. FIG. 8 is a flowchart showing a flow of processing in which a meter-reading host collects meter-reading data in the communication line link apparatus shown in the reference example of FIG. 7. It is explanatory drawing which represented the flow of a series of processes shown in FIG. 8 in the time table for 60 minutes per hour.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described with reference to the drawings.

  FIG. 1 shows a general form of a telemetry system according to the present embodiment, and the telemetry system 1 is a general-purpose telemetry system that can be used in general for electricity, gas, water, and other telemetry. The remote measurement system 1 includes a measurement host 2a that performs remote measurement and a measurement host from each measurement terminal (5a, 5b) that acquires measurement values from each measurement device (6a, 6b) via the mobile phone network 4a or the Internet 4b. 2a or a communication host link device 3 that transmits to the measurement host 2b, and a measurement host 2b that monitors the entire system. The communication line network 4 is a packet communication environment using the mobile phone network 4a and the Internet 4b such as an optical cable, and a connection service is provided by a communication carrier. In particular, in a packet communication environment using the mobile phone network 4a, a base station 8 that communicates with a mobile phone terminal connected to the measurement terminal 5a and a packet communication processing device 7 that transmits data are provided.

  Next, a remote power metering system, which is a remote measuring system specialized for meter reading of electricity meters, will be described.

  FIG. 2 shows a configuration of a remote power metering system 10 that performs meter reading of the watt hour meter in the embodiment of FIG. The remote power metering system 10 is connected to, for example, a power company's backbone network, and acquires measured values from a metering host 11a that performs remote measurement, a system monitoring host 11b that performs system monitoring of power supply, and a watt hour meter 24. The communication line linking device 12 for collecting power values from the plurality of meter reading terminals 23, the mobile phone network 14 a and the Internet 14 b connecting the communication line linking device 12 and the plurality of meter reading terminals 23, and the backbone network of the power company And an authentication device 13 for ensuring security. The mobile phone network 14a includes base stations 22 arranged in various places and a packet communication processing device 21 for processing packet communication. In the present embodiment of FIG. 2, a message transmission service using a short message service, or a transmission service using a remote access service or a packet communication line service is used.

  In the embodiment relating to the remote power meter reading system of FIG. 2, an embodiment (hereinafter referred to as a reference example) which is a reference for understanding the embodiment according to the present invention will be described with reference to FIG. FIG. 7 shows a configuration in which two communication line linking devices (12a, 12b) collect meter reading data from each meter reading terminal 23 via the mobile phone network 14a. The mobile phone network 14a includes an authentication device 13, a packet communication processing device 21, a location registration server 15, a plurality of base stations 22, and a meter reading terminal 23 connected to the mobile phone terminal. The meter-reading terminals (23a, 23b, 23c) perform wireless communication with the nearest base stations (22a, 22b, 22c) and can communicate with the communication line link devices (12a, 12b) via the mobile phone network 14a. It is.

  The communication line linking device 12 of FIG. 7 as a reference example connects the packet communication line between the communication line linking device and the meter-reading terminal by transmitting an activation signal by a short message to the meter-reading terminal. With such line connection, meter reading data can be acquired from about 500 meter reading terminals per unit, and a total of about 1000 metering terminals can be connected by two communication line linking devices. However, the activation signal transmitted from the communication line linking device 12 in FIG. 7 needs to acquire information of the base station 22 that can communicate with the meter-reading terminal 23 of the connection destination from the location registration server 15, and accesses the location registration server. In some cases, communication with the meter reading terminal may not be possible. Therefore, a mechanism for causing such a problem will be described.

  FIG. 8 shows the flow of processing in which the meter reading host in the reference example shown in FIG. 7 collects meter reading data. In order from the left side of FIG. 8 are an electricity meter, a meter reading terminal, a mobile phone network, an authentication device, a communication line link device, and a meter reading host. In the reference example, a packet communication line is connected by transmitting an activation signal by a short message from the communication line link device to the meter reading terminal. The short message is sent from the communication line linking device to the meter reading terminal as an activation signal necessary for activation of connection, and the meter reading terminal executes authentication processing based on the activation signal and connects to the mobile phone network to establish a communication line. Communicate with the linkage device. Next, details of the processing will be described. When the process is started, a packet communication line connection request including the telephone number and message of the meter-reading terminal is first transmitted from the communication line link device to the mobile phone network (step S100). The mobile phone network that has received the packet communication line connection request accesses the location registration server and transmits a packet communication line connection request to the base station communicating with the meter-reading terminal (step S102). Is returned to the communication line link device (step S104). Next, the meter-reading terminal that has received the packet communication line connection request transmits a delivery notification indicating that the packet has been correctly delivered to the mobile phone network (step S106). The cellular phone network transmits the received delivery notification to the communication line link device (step S108). The communication line linking device transmits a delivery response indicating that the delivery notification has been received to the mobile phone network (step S110). Next, the meter-reading terminal transmits the ID and password for line connection to the mobile phone network (step S112), and the mobile phone network transmits the ID and password to the authentication device for authentication (step S114) (step S112). S116). When the authentication is completed, an authentication result notification is transmitted from the authentication device to the meter reading terminal (step S118), and the meter reading terminal and the packet communication line of the mobile phone network are connected (step S120).

  Next, a connection confirmation request is transmitted from the communication line linking device to the meter reading terminal (step S122), and a connection confirmation response is transmitted from the meter reading terminal to the communication line linking device (step S124), whereby the communication line linking device and the meter reading terminal are transmitted. Are connected (step S126). When the connection is made, a reception response is transmitted from the communication line cooperation device to the meter-reading terminal for periodic connection confirmation thereafter (step S127).

  Next, an example (timed process) of meter reading executed at a predetermined time will be described. The scheduled processing in FIG. 8 is a meter reading host-driven scheduled processing. First, the meter reading host transmits a meter reading request to a plurality of watt-hour meters to the communication line link device (step S128). Next, the communication line link device transmits a meter reading request to the meter reading terminal (step S130), and the meter reading terminal transmits a meter reading request to the watt hour meter (step S132). The watt hour meter that has received the meter reading request transmits the meter reading data to the meter reading terminal (step S134). The meter-reading terminal that has received meter-reading data from the watt-hour meter transmits information such as the watt-hour meter ID and the meter-reading time to the communication line link device as meter-reading data response information (step S136). The communication line linking device that has received the meter reading data response information transmits the meter reading data of each watt-hour meter to the meter reading host after confirming that it is meter reading data in a plurality of watt-hour meters requested from the meter reading host (step) S138). Thereafter, the communication line linking device transmits a meter reading response as a meter reading response to the meter reading terminal (step S142). The meter-reading terminal that has received the meter-reading response confirms that the meter-reading has ended normally. Thus, a series of scheduled processing is completed.

  FIG. 9 shows a flow of a series of processes in FIG. 8 in the linkage device 1 and the linkage device 2 shown in FIG. 7 in a time table of 60 minutes per hour. In the first meter reading, the linkage device 1 starts the activation signal processing by a short message from 00 minutes every hour (steps S100 to S124 in FIG. 8), and from 10 minutes every hour by the meter reading host using the packet communication line (from FIG. 8). Steps S128 to S142), and the metering data gathering processing time by the metering host starts from 15 minutes every hour. In the linking device 2, the activation signal processing (steps S100 to S124 in FIG. 8) starts from 50 minutes per hour before the activation signal processing of the linking device 1, and the connection confirmation by the packet communication line starts from 00 minutes per hour (step S127 in FIG. 8). Thus, after 10 minutes every hour, the meter reading processing by the meter reading host (steps S128 to S142 in FIG. 8) and the meter reading data are summarized. The reason for this time table is to avoid the problem that when the linkage device 1 and the linkage device 2 are simultaneously accessed by the activation signal by the short message, the line cannot be connected due to the load concentration on the location registration server. Therefore, it is necessary to shift the start signal processing of the linkage device 1 and the linkage device 2 so as not to concentrate loads.

  Next, the time schedule for the second meter reading will be described. In the second meter reading, the linkage device 1 starts the activation signal processing by a short message from 30 minutes every hour, starts the meter reading processing by the meter reading host using the packet communication line from 40 minutes every hour, and collects the meter reading data by the meter reading host from 45 minutes every hour. It will be time. In the linkage device 2, the activation signal processing starts from 20 minutes every hour before the activation signal processing of the linkage device 1, the connection confirmation is made by the packet communication line from 30 minutes every hour, and the meter reading processing by the meter reading host and the meter reading data are collected after 40 minutes every hour. It becomes. However, by adjusting the time schedule for each linkage device, the reference example has a limit of processing up to about 1000 terminals. Therefore, this embodiment will be described in which the limitation of the mobile phone network is avoided.

  FIG. 3 shows a flow of a series of processes for transmitting meter reading data of a watt-hour meter to a meter reading host by executing connection activation using a packet communication line by a meter reading terminal in the embodiment of the remote power meter reading system of FIG. Show. One of the characteristic items of the meter reading method in the present embodiment is that the connection activation by the short message, which has been conventionally performed by the communication line linking device, is changed to the connection activation using the packet communication line from the meter reading terminal. In other words, the number of mobile phone terminals was increased by avoiding restrictions on the mobile phone network.

  As already mentioned, in other systems, before the meter reading host collects the power value of the watt hour meter, the communication line link device or authentication device connects the line by activating the connection with a short message from the meter reading terminal. To be done. On the other hand, in the present embodiment, connection activation by PPP (PPP: terminal call and authentication by point-to-point protocol) is performed on the packet communication line from the meter reading terminal to the mobile phone network at a predetermined time. The reason is that the mobile phone terminal of the meter-reading terminal constantly emits weak radio waves and communicates with the nearest base station. Access to the location registration server described above is not required by activating connection to the fixed telephone. For this reason, it is possible to increase the number of mobile phone terminals by eliminating access to the location registration server that restricts the telephone network.

  Hereinafter, a flow of a series of processes for transmitting meter reading data to the meter reading host will be described with reference to FIG. In order from the left side of FIG. 3, there are an electricity meter, a meter reading terminal, a mobile phone network, an authentication device, a communication line link device, and a meter reading host. The mobile phone network is synchronized by a standard clock, and the connected meter reading terminals are also synchronized. The meter-reading terminal transmits the ID number and password of the meter-reading terminal to the mobile phone network in order to connect to the packet communication line of the mobile phone network at a predetermined time set in advance (step S10). In order to authenticate the meter reading terminal, the mobile phone network transmits the ID number and password of the meter reading terminal to the authentication device to authenticate the meter reading terminal (steps S12 and S14), and the authentication device transmits an authentication result notification to the meter reading terminal. (Step S16) and PPP connection is completed (Step S18).

  The communication line linking device transmits a predetermined connection confirmation request to the meter-reading terminal in order to confirm the connection with the meter-reading terminal (step S20). The meter-reading terminal that has received the connection confirmation request transmits a connection confirmation response to the communication line link device after confirming that the communication is normal (step S22). The communication line linking device recognizes that the connection between the meter reading terminal and the communication line linking device is completed when a connection confirmation response corresponding to the connection confirmation request is returned (step S24). When the communication line linking device is connected to several hundred meter reading terminals, it periodically transmits a reception response to each meter reading terminal in order to maintain the connected line (step S26). Similarly, each meter-reading terminal can recognize that the line is maintained by receiving a reception response from the communication line link device. By using such a function, it is possible to maintain the connection for a long time even if connection and disconnection are required for each meter reading.

  The scheduled process in FIG. 3 is a meter reading host-driven scheduled process, and is the same as the scheduled process in FIG. 8, so the description of steps S28 to S40 in FIG. 3 is omitted. The meter-reading host-driven scheduled processing is focused on reliably collecting meter-reading data from the watt-hour meter, so during the processing time from when the meter-reading host issues a meter-reading request until it acquires the meter-reading data It will be waiting time and it will be difficult to improve efficiency. Therefore, the communication line link device initiative type scheduled processing improved from the scheduled processing of FIG.

  4, in the embodiment shown in FIG. 2, connection activation by the meter-reading terminal is executed, and the communication line linking device stores meter-reading data and transmits the meter-reading data stored in response to a meter-reading request from the meter-reading host to the meter-reading host. The flow of the communication line linkage device initiative type is shown. As in FIG. 3, from the left side, they are an electricity meter, a meter reading terminal, a mobile phone network, an authentication device, a communication line link device, and a meter reading host. Since the meter-reading terminal is connected to the packet communication line of the mobile phone network at a predetermined time set in advance, the processing from step S10 to step S26 is executed. Since the processing from step S10 to step S26 is the same as the processing in FIG. 3, the description will be omitted, and the communication line linking device-led scheduled processing from step S68 to S80 will be described.

  The scheduled processing in FIG. 4 is a communication line linking device-driven scheduled processing. First, the communication line linking device transmits a meter reading request to the meter reading terminal prior to meter reading of the meter reading host (step S68). The meter-reading terminal transmits a meter-reading request to the watt-hour meter (step S70). The watt hour meter that has received the meter reading request transmits the meter reading data to the meter reading terminal (S72). The meter-reading terminal transmits information such as the watt-hour meter ID and the meter-reading time as meter-reading data response information to the communication line link device (step S74). The communication line linking device stores the received meter reading data response information in the storage unit (step S75). Here, the communication line link device waits for a meter reading request from the meter reading host.

  When the meter-reading host transmits a meter-reading request to a plurality of watt-hour meters to the communication line linking device (step S76), the communication line linking device is meter-reading data in the plurality of watt-hour meters requested by the meter-reading host. After confirming this, meter reading data of each watt-hour meter is transmitted to the meter reading host (step S78). Next, the communication line linking device transmits a meter reading response to the meter reading terminal as a meter reading response (step S80), and the meter reading terminal confirms that the meter reading has ended normally. Thus, a series of scheduled processing is completed.

  By such processing, communication with the storage unit of the communication line linkage apparatus is performed for a short time from when the meter reading request (step S76) is transmitted from the meter reading host of FIG. 4 until the meter reading data is received (step S78). By sending a lot of meter reading data to the meter reading host, not only the waiting time of the meter reading host is eliminated and the load on the meter reading host can be reduced, but also the number of meter reading terminals per meter reading host (mobile) The number of telephone terminals) can be increased.

  FIG. 5 shows a flow of a series of processes for starting connection from the meter-reading terminal in a time table of 60 minutes per hour. FIG. 5 shows a time table of two communication line linking devices (linking device 1, linking device 2). Connection activation (terminal call) from each meter-reading terminal is started from 50 minutes per hour, and PPP is used. The packet communication line is connected (steps S10 to S24 in FIG. 4). Next, after checking the connection of the packet communication line from 00 minutes every hour (step S26), the meter reading host or communication line link device collects the meter reading data from the watt hour meter from 10 minutes every hour (steps S68 to S80 in FIG. 4). . Next, the meter reading data collected by the meter reading host is collected from 15 minutes every hour, and the first meter reading of the 30 minute cycle is completed.

  Furthermore, the second meter reading of the 30-minute cycle is the start of connection from each meter-reading terminal to the communication line link device from 20 minutes per hour, the connection confirmation of the packet communication line from 30 minutes per hour, and the meter reading from the watt hour meter from 40 minutes per hour This is data collection, which is a process for collecting meter reading data from 45 minutes per hour. Thus, by performing connection activation from the meter-reading terminal, the time table of each communication line link device becomes the same, and by increasing the same communication line link device, the meter-reading terminal avoids restrictions on the mobile phone network It becomes possible to increase the number of remote power meter readings from.

  FIG. 6 is a table showing an example of the activation timing of the connection activation time of the meter-reading terminal, and shows the group number, terminal number, and connection activation time from the left. One of the characteristic matters in the present embodiment is that the timing for starting connection of the meter reading terminal is managed by the communication line linkage device so as not to exceed the processing capability of the communication line linkage device. Specifically, based on the number of terminals that can be processed per unit time of the communication line linking device, a terminal number assigned so as not to access the same base station at the same time is assigned to each meter-reading terminal, and about 500 The start time of the meter-reading terminal is assigned. The first connection activation of the 30-minute cycle is performed from 50 minutes per hour, and the second connection activation is performed from 20 minutes per hour. In this embodiment, connection is performed from 20 minutes to 20 minutes and 50 seconds and from 50 minutes to 50 minutes and 50 seconds. Start-up time.

  Here, the number of terminals per unit time of the communication line linking device in connection activation executed from 50 minutes per hour and 20 minutes per hour is, for example, 10 units / second. Thereby, the connection activation time is a quotient (integer) obtained by dividing the terminal activation number (for example, 1 to 500) by the number of terminals per unit time to the connection activation time (for example, the elapsed time from 20 minutes per hour (1200 seconds per hour)). It is calculated by adding Specifically, in the case of a meter-reading terminal having a terminal number of 16, the connection activation delay is as follows: terminal number / number of terminals per unit time + connection activation time = 16 ÷ 10 + 1200 seconds = 1120 seconds (connected at 20 minutes 1 second per hour) Start). The connection activation time obtained in this way was set by transmitting to the meter-reading terminal during idle time when the meter-reading host is not performing meter-reading processing.

  As described above, by using the remote measurement system or the remote power metering system according to the present embodiment, it is possible to avoid the limitation of the mobile phone network and increase the number of metering terminals. In the present embodiment, the number of terminals per unit time of the communication line linking device has been described as an example of a time table of 10 units / second, 60 minutes, but is not limited thereto, and is not limited to this. It is preferable to set an appropriate value. Moreover, it is not limited to the meter reading of electric power, but can be used for various remote measurements such as gas, water, and the like. Furthermore, the mobile phone network according to the present embodiment can be substituted by another network having the same form, and the communication line network to be used is not limited to the mobile phone network.

  DESCRIPTION OF SYMBOLS 1 Telemetry system, 2 Measurement host, 3 Communication line link device, 4 Communication line network, 4a, 14a Mobile telephone network, 4b, 14b Internet, 5 Measurement terminal, 6 Measuring instrument, 7 Packet communication processing apparatus, 8, 22 Base Station, 10 remote power metering system, 11a meter reading host, 11b system monitoring host, 12 communication line linking device, 13 authentication device, 15 position registration server, 21 packet communication processing device, 23 meter reading terminal, 24 watt-hour meter.

Claims (6)

Periodically acquires measurement data, via a measuring device capable of transmitting using a communication network, and passing ShinSo location in communication with a plurality of the measurement terminal using the communication network, the communication ShinSo location provided a measuring host for managing a metered amount by collecting measurement data from a plurality of said measurement terminal, to including system Te, the communication line connection device used as the communication device,
The communication line link apparatus, according to the measurement schedule of the measuring host has a connection time setting means for the time of connecting start to the communication line link apparatus in advance set in each said measurement terminal,
The measuring terminal in advance communicate via a base station that has been carried out to connect the connection start to the communication line link apparatus to the communication line link apparatus at a preset time himself and,
The connection time setting means pre-sets the time for starting connection to the communication line linking device to each of the measurement terminals so that a plurality of the measurement terminals do not communicate with the same base station at the same time. Communication line linkage device . The communication line linking device according to claim 1,
Depending on the number of processable the measuring terminal per unit time in the communication line link apparatus, a communication line link apparatus each said measuring terminal and allocates the time to start connecting to each of said measurement terminal. In the communication line link apparatus according to claim 1 or 2,
Before the measuring host to collect measurement data from the measurement terminal via the communication line link apparatus, a connection confirming means for confirming the connection between the measuring terminal and the communication line link apparatus,
If it is determined that the connection between the measuring terminal has expired by the connection confirming means includes re-connection means for connecting to connect start to the measuring terminal,
A communication line linking device comprising: In the communication line linkage device according to any one of claims 1 to 3,
Storage means for the transmitting the measurement request to the Measurement terminal prior to receiving the measurement request from the measuring host to receive and store measurement data from the measuring terminal,
And relay means for transmitting to said measuring host after the stored measured data has been received measurement request from said measuring host,
A communication line linking device comprising: The communication line link device according to claim 4,
Serial communication line link apparatus characterized by having a measurement data transmitting means for transmitting the measurement data to the other measurement host that憶. A telemetry system comprising: a plurality of the measurement terminals; the communication line linking device according to any one of claims 1 to 5; and the measurement host.

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