JP5102061B2 - Communication system and power supply monitoring control system using the same - Google Patents

Description

  The present invention relates to a communication system in which many terminal stations are connected to a management device for managing a network in a tree shape, a straight line shape, and the like, and a power supply monitoring control system using the communication system.

A typical prior art of the communication system as described above is disclosed in Patent Document 1. In the conventional technology, a gas microcomputer meter is connected to a monitoring center from an automatic reporting device via a telephone line, and whether or not the consumption is within a predetermined range, for example, confirms the survival of an elderly person living alone, A security meter reading system has been proposed that monitors unauthorized use of gas in tenants.
JP-A-6-243382

  In the above-described conventional technology, a regular meter reading is performed once a month by using a telephone line, and a temporary alarm is issued when any abnormality is detected. Therefore, dialing and calling the monitoring center, transmitting meter reading data over a low-rate communication line, returning a response (ACK) if received within that call, and requesting retransmission if not received. Even if the operation takes a long time, traffic is not particularly problematic if the meter reading timing is distributed within the range of one month.

  However, when a large number of terminal stations are installed in the low-rate communication line and the periodic alarm is frequently performed, for example, by shortening the meter reading interval, an increase in traffic becomes a problem.

  An object of the present invention is to provide a communication system capable of reducing traffic while reliably transmitting data even in a situation where many terminal stations are installed on a low-rate communication line, and a power supply monitoring control system using the communication system It is to be.

The communication system according to the present invention includes a management device including a plurality of terminal stations, and each of the terminal stations issues first and second data to the management device at regular times and at any time. In the communication system, the terminal station receives the first and second data acquired by the data acquisition means, the communication means, and the data acquisition means for acquiring the first and second data. The first and the second data to be reported at any time after the second data that should be reported at any time is generated after the second data to be reported at any time is generated. Communication control means for merging the second data issued at any time with the data, creating data to be actually issued, and causing the communication means to issue the data , First and second Upon receiving over data, characterized in that it does not return a response (ACK) indicating the reception.

  According to the above configuration, the management device that manages the network includes a large number of terminal stations arranged in a tree shape or a straight line shape, and each of the terminal stations is directed to the management device at a fixed time and as needed. In the communication system that issues the second data and the second data, after the second data to be issued at any time occurs, the first data to be issued at the next scheduled time is changed to the above-mentioned as needed. The second data that is reported to is merged and transmitted. The management device manages the first data that is issued on a regular basis by the reception time and serial number, and if there is undelivered data, a re-transmission request or the like is appropriately generated.

  Therefore, even if the management apparatus does not return ACK not only for the first data that is regularly issued but also for the second data that is occasionally issued, the management apparatus is Data can be determined from the lack of the first data that is issued regularly, so even if many terminals are installed on the low-rate communication line, data can be transmitted reliably However, traffic can be reduced.

In the communication system of the present invention, the terminal station further includes a storage unit that stores the first data acquired by the data acquisition unit, and a self-diagnosis unit. When the occurrence is detected, the communication control means notifies the management apparatus of this, and in response to the request from the management apparatus to retransmit data, the self-diagnosis means determines the final normality. The first data after the reading is read out from the storage means, and the data is retransmitted with an accident flag attached thereto.

  According to the above configuration, the management apparatus can recognize low-credibility data from the accident flag in the first data such as meter reading data and reflect it in subsequent processing such as billing processing. , Can help to improve the service.

  Preferably, the first data transmitted from each terminal station to the management apparatus is sensing data, and control data is transmitted from the management apparatus to each terminal station.

  In the communication system of the present invention, the communication means performs communication in a PHS (Personal Handyphone System) transceiver mode.

  According to the above configuration, in wireless communication such as PHS, a large number of terminal stations are installed in a low-rate communication line, so that traffic can be reduced while transmitting data reliably as in the present invention. The technique that can be used is particularly suitable.

  Furthermore, the power supply monitoring and control system of the present invention is configured such that, in the communication system, each terminal station is provided with a watt-hour meter that acquires sensing data and a load switch that performs switching control in response to the control data. It is characterized by that.

  According to the above configuration, the management device holds a route table indicating how the terminal stations are arranged, periodically acquires watt-hour meter sensing data from each terminal station, and Accordingly, the load switch can be controlled via each terminal station.

  Therefore, it is possible to collect power consumption by time of day and power outages due to moving in and out remotely at power company sales offices, etc. without the workers having to go directly to contracted homes or offices. . As a result, it is possible to adopt a detailed fee system, or to quickly charge or power outage, and to improve customer service in the power company.

  As described above, the communication system of the present invention comprises a management device that manages a network, in which a large number of terminal stations are arranged in a tree shape or a linear shape, and each terminal station is directed to the management device at a fixed time and In a communication system that issues first and second data at any time, after the generation of second data to be reported at any time, the first data to be reported at the next scheduled time The data is transmitted together with the second data issued at any time.

  Therefore, even if the management device does not return an ACK for each reception as well as the first data that is regularly issued, the management device can Since it is possible to determine whether there is any undeliverable data from the lack of the first data that is regularly reported, even in the situation where a large number of terminal stations are installed in the low-rate communication line, the data can be reliably received. Traffic can be reduced while transmitting.

  Furthermore, as described above, the power supply monitoring and control system of the present invention includes a watt-hour meter for obtaining sensing data and a load switch for performing switching control in response to control data in each terminal station in the communication system. It is made up of.

  Therefore, it is possible to collect power consumption by time of day and to perform power outages due to moving in and out remotely at power company sales offices, etc. without going directly to contract homes or offices. it can. As a result, it is possible to adopt a detailed fee system, or to quickly charge or power outage, and to improve customer service in the power company.

  FIG. 1 is a block diagram showing an overall configuration of a power supply monitoring control system according to an embodiment of the present invention. The power supply monitoring and control system includes a server device 1 installed at a power company sales office and the like, and one or a plurality of gateways GWa, GWb, connected to the server device 1 via a network 2 such as an in-house optical fiber network. GWc,... (Generally referred to as reference numeral GW hereinafter), and unit power meters T1-1, T1-2, T1-3,. The unit power meters T1-1, T1-2, T1-3,..., T2-1, T2-2,. −2,... (Generally referred to as “T” hereinafter).

  Each unit wattmeter T serving as a terminal station is similar to the structure previously proposed by the applicant of the present invention in Japanese Patent Laid-Open No. 2006-292442 and Japanese Patent Laid-Open No. 2006-170787. For example, as shown in FIG. Configured. That is, the load switch 3, the watt-hour meter 4, and the wireless communication device 5 are arranged from the terminal block 6 side to which each distribution line in the house is connected. The watt-hour meter 4 reads the accumulated power amount every predetermined period, for example, every 30 minutes, and the meter-reading data as sensing data is set to a timing preset by each unit watt meter T by the wireless communication device 5. , Transmitted to the gateway GW to which the own device belongs, and is collected and input to the server device 1. On the other hand, control data for performing opening / closing of the load switch 3 or backup meter reading for retransmitting non-delivery meter reading data is transmitted from the server device 1 via the gateway GW as needed. Sent to

  The server device 1 holds a route table as shown in FIG. 1 showing how the unit wattmeters T are arranged. As described above, the server device 1 periodically receives data from the built-in wireless communication devices 5. In addition, the meter reading data of the watt-hour meter 4 can be acquired, and the load switch 3 can be controlled via each wireless communication device 5 as necessary. In addition, a power outage associated with moving in and out can be performed remotely at a power company sales office or the like, without the operator having to go directly to the contracted home or office. As a result, it is possible to adopt a detailed fee structure, to promptly perform billing and power failure, and to improve customer service in the power company.

  In each unit power meter T, the wireless communication device 5 uses a device that performs wireless communication in a PHS (Personal Handyphone System) transceiver mode, and performs a communication operation as follows. In the PHS transceiver mode, when the line of sight is visible, communication is possible within a radius of 150 to 200 m, and each wireless communication device 5 communicates not only with the adjacent wireless communication device but also directly with the gateway GW in some cases. Is also possible.

  FIG. 3 is a block diagram illustrating a configuration example of the wireless communication device 5. The wireless communication device 5 stores the PHS wireless device 11 that is a communication means, a wireless communication control unit 12 that controls the communication and creates notification data, a timer 13, and parameters necessary for communication. The memory 14, the input operation unit 15 that can set a part of the contents of the memory 14, the self-diagnosis unit 16, the interface 21 that receives meter reading data from the watt-hour meter 4, and the load switching Controls communication between the interface 22 for transmitting control data to the measuring device 3, the watt hour meter 4 and the load switch 3, the in-machine communication control unit 23 as data acquisition means, and backup storage of the meter reading data. And a data memory 24 to be stored.

  On the other hand, FIG. 4 is a block diagram illustrating a configuration example of the server apparatus 1 that is a management apparatus. The server device 1 collects meter reading data from the input operation unit 51 and the watt hour meter 4 of each unit watt meter T serving as a terminal station, and also controls a unit control unit 52 that controls the load switch 3, A database 53 that stores the control status of the load, and an interface 54 that is connected to the network 2 and communicates with each unit power meter T from the gateway GW and is a second communication means. .

  The gateway GW replaces the in-machine communication control unit 23, the interfaces 21, 22 and the data memory 24 for controlling communication with the watt hour meter 4 and the load switch 3 in the configuration of the wireless communication device 5 shown in FIG. Thus, the communication control unit configured to communicate with the network 2 and an interface are provided.

  In the power supply monitoring and control system configured as described above, each wireless communication device 5 is set from the input operation unit 15 and has its own telephone number # 01 and transfers the meter reading data to the memory 14. Phone number # 11 of a higher-order partner (calling destination) and another phone number # 12 used in emergency control. The telephone number # 11 is the telephone number of the unit power meter adjacent to the own device according to the hierarchy of the route table, and the other telephone number # 12 is at least a part of the unit power meter to the own device exceeding the hierarchy. It is the telephone number of the unit power meter that is not directly adjacent.

  Specifically, in the example of FIG. 1, unit power meters T1-1, T1-2, T1-3, T1-4, T1-5, which are the lowest terminal stations; T1-11, T1-12 (generic name) In this case, the telephone number # 01 is a-300, a-310, a-320, a-330, a-340; b-300, b-310, respectively. Are registered in advance from the input operation unit 15. The telephone numbers # 11 include unit power meters T2-2, T2-4, T2-6, T2-8, T2-10; a-120, a-140, a-160, a-180, a-200; b-120, b-140 are registered in advance.

  On the other hand, the telephone number # 12 used in an emergency includes the telephone numbers of unit power meters that are two or more higher stations, for example, T4-11 for unit power meters T1-11 and T1-12. , T3-12 telephone numbers b-30 and b-80 are registered in advance from the input operation unit 15. Even if the telephone number # 12 is not set in advance, the telephone number and the hierarchy of the surrounding unit wattmeter are detected by monitoring the electric field strength, and the telephone of the higher unit wattmeter than the own unit is detected. You may make it search and set a number autonomously.

  In the wireless communication device 5 configured as described above, first, in the normal state, the wireless communication control unit 12 has its own watt-hour meter 4 stored in the data memory 24 at the timing τ 1 defined by the timer 13. Read the meter reading data from the mobile phone and add it to its own phone number stored in the phone number # 01 of the memory 14, for example, b-80 in the unit power meter T3-12, so that it should be issued at a fixed time. Meter reading data which is first data is created, and the telephone number of the higher-level wireless communication apparatus adjacent to the own apparatus stored in the telephone number # 11 from the wireless device 11, for example, the unit power meter T3-12 Then, b-30 of unit power meter T4-11 is called and transmitted. On the other hand, the wireless communication control unit 12 creates the data to be transmitted by adding the own telephone number to the meter reading data from the lower side received by the wireless device 11. Then, the telephone number of the wireless communication apparatus stored in the telephone number # 11 is called to perform relay transmission.

  On the other hand, at the timing τ 2 defined by the timer 13, for example, at 0 and 30 minutes per hour, the in-machine communication control unit 23 acquires the meter reading data of the integrated power amount via the interface 21 and stores it in the data memory 24. . The data stored in the data memory 24 is, for example, as indicated by reference numeral 24a in FIG. 3, and the storage (backup) capacity thereof is selected to be a capacity capable of accumulating meter reading data for, for example, 40 days. The database 53 on the server device 1 side stores meter reading data for each customer, load control status and power failure status, which will be described later, for a longer period.

  On the other hand, when event data, which is second data to be issued in an emergency (as needed), such as the result of switching control or backup meter reading data described later, is generated from the load switch 3, the wireless communication control unit 12 The transmission data is generated by adding the telephone number of the own apparatus stored in the telephone number # 01 to these data, and the own apparatus stored as the telephone number # 12 in the memory 14 in the wireless device 11 The telephone number of the wireless communication device of the jump destination that is not adjacent to, for example, the unit power meter T1-12 makes a call by b-80 of the unit power meter T3-12 to perform transmission. At this time, in the PHS transceiver mode, only 1: 1 communication can be performed. Therefore, when the jump destination unit power meter T3-12 is already busy, the wireless communication control unit 12 is assumed to end communication. After waiting for a while, the emergency data is transmitted. That is, each wireless communication device 5 is configured to finish one communication within 15 seconds, and when the jump transmission cannot be performed, the retry transmission is performed three times at intervals of 5 seconds, so that the jump transmission is performed. Is realized.

  The wireless communication control unit 12 of the unit power meter T3-12 that has received the event data by the wireless device 11 immediately transmits to the gateway GWb stored in the wireless device 11 as the telephone number # 12 in its own memory 14. Make a call and transfer. Thus, emergency event data from the lower side can be quickly transmitted with the minimum number of relays.

  Further, for example, emergency control data such as a power failure (open / close control of the load switch 3) accompanying the move-in / out and a request for transmission of backup meter reading data from the server device 1 is sent from the unit controller 52 to the interface 54. And is transmitted via the gateway GWb to the telephone number b-80 of the unit power meter T3-12 stored in the control data. The communication control unit 12 of the wireless communication device 5 of the unit power meter T3-12 that has received this call similarly makes a call to the telephone number b-310 of the unit power meter T1-12 stored in the control data. Perform the transfer. The in-machine communication control unit 23 of the unit wattmeter T1-12 that has received the control data performs the open / close control of the load switch 3 via the interface 22, or stores the meter reading data that has not been reached into the memory 24. The wireless device 11 performs backup transmission. In this way, emergency event data from the host side can be quickly transmitted with the minimum number of relays.

  On the other hand, in the case of control data that is not urgent, such as control data for controlling the load switch 3 of each customer at a predetermined time, the header portion of the wireless communication device to be routed in accordance with the route table All the telephone numbers are described, and the wireless communication control unit 12 analyzes the control data received from the unit control unit 52 to the own device and calls the telephone number of the wireless communication device to be transmitted next Transfer with. For example, the control data from the server device 1 relayed by the unit power meter T4-11 is, for example, T3 according to the data among the unit power meters T3-11 and T3-12 of the next layer at an arbitrary timing. Will be transferred to -12.

  In this way, regular meter reading data collection and control data distribution can be performed regularly and in a short time, and event data can be quickly transmitted in an emergency or abnormality. ing. Further, the memory 14 of each wireless communication device 5 stores only the telephone number # 11 of the adjacent higher-order wireless communication device and the telephone number # 12 of the higher-order wireless communication device that is the jump destination. The route table may not be provided, the storage capacity can be reduced, and the route can be easily changed.

  It should be noted that in the power supply monitoring and control system of the present invention, the wireless communication control unit 12 of each unit wattmeter T reads the scheduled meter reading data stored in the memory 24 at the timing τ1 and transmits it from the wireless device 11 ( In order to generate data, the serial metering data is assigned a serial number and data to be actually reported is created. For example, in the case of the unit power meter T1-1, the generated notification data is as shown in FIG. In FIG. 5, the data D1 is the telephone number of the upper unit power meter T2-2 stored in the memory 14 as the telephone number # 11, and the data D2 is stored in the memory 14 as the telephone number # 01. This is the telephone number of the device itself, data D3 is data indicating the meter reading date and time, data D4 is meter reading data, data D5 is a redundant frame, and D6 is a serial number to be added.

  Then, the unit control unit 52 of the server device 1 stores the data received via the interface 54 in the database 53 for each consumer (phone number), and sums it up or reflects it in the control. Or processing into a desired form. At this time, the unit control unit 52 checks the serial number of the received data, and when there is a loss, jumps a retransmission request from the interface 54 to the wireless communication control unit 12 of the corresponding unit power meter. To do. The wireless communication control unit 12 of the unit wattmeter that has received the retransmission request reads out the meter reading data of the corresponding part from the memory 24 again, and performs jump transmission. In place of the serial number, other parameters may be used as long as the data can be determined such as time information.

Also, it should be noted that in the power supply monitoring control system of the present invention, the wireless communication control unit 12 of each unit power meter T receives the result of load control as described above, and event data such as a power failure or power recovery due to a lightning strike. in a case where it occurs, each time performs the transmission, and merging the scheduled meter reading data to be transmitted next (and inserted into the redundant frame D5), to perform retransmission within the same frame as the ordinary meter reading data It is. Another example of the event data is a deviation of the clock (timer 13) of the own device, and can be diagnosed by the self-diagnosis unit 16, for example, and an example of the diagnosis result is indicated by reference numeral 16a.

  6 and 7 are diagrams for explaining such a notification operation. In the example of FIG. 6, meter-reading data is transmitted at 15:00, which is the time of regular notification, and reaches the server device 1 and is received normally. On the other hand, the self-diagnosis unit 16 detects that a power failure occurred at 15:20 and power was restored at 15:25 before 15:30, which is the scheduled time for the next 30-minute meter reading data. Then, the radio communication control unit 12 transmits the power failure / recovery event data every time an event occurs, and transmits the event data attached to the next 15:30 scheduled data.

  However, they do not reach the server device 1 due to a defective PHS line, a defective relay unit, or the like. When the unit control unit 52 of the server device 1 receives the next 16:00 scheduled notification data, the serial number is changed. Since a jump occurs, first, the non-delivery of the 15:30 scheduled alarm data is detected, and the unit power meter of the terminal station is requested to retransmit the 15:30 scheduled alarm data by jump transmission. . In response to this, the wireless communication control unit 12 of the unit power meter of the corresponding terminal station retransmits the 15:30 scheduled alarm data including the power failure / recovery event data by jump transmission. In this way, the server device 1 reliably detects the power failure / recovery of the unit power meter at the terminal station and stores it in the database 53. For example, when the power failure is prolonged, the basic charge is reduced. Processing using can be performed.

  Here, when the server device 1 performs management based on the waiting time, it is possible to detect the non-delivery of the 15:30 scheduled notification data in real time and to request retransmission. However, because it is undelivered due to a communication error, making a retransmission request unnecessarily together with non-delivery detection causes an increase in communication traffic, so after confirming the arrival of subsequent data as described above, It is desirable to request retransmission of undelivered data.

  In the example of FIG. 7, similarly, the meter reading data is transmitted at 15:00, which is the time of the regular notification, and is normally received by the server device 1. However, the self-diagnosis unit 16 detects the deviation when the clock (timer 13) of the own device is 15:15, for example, by receiving control data from the server device 1, and the correct time is 15:25. The time correction event data is jump-transmitted at that timing. However, the server device 1 is not reached due to a defect in the PHS line or a relay unit, and the time correction event data is attached to the next scheduled alarm data at 15:30. It has become.

  When the unit control unit 52 of the server apparatus 1 receives the next 16:00 scheduled notification data, the serial number skips, so that it detects the non-delivery of the 15:30 scheduled notification data. Then, the unit power meter of the corresponding terminal station is requested to retransmit the 15:30 scheduled alarm data by jump transmission. In response to this, the radio communication control unit 12 of the unit power meter of the corresponding terminal station retransmits the 15:30 scheduled alarm data including the time correction event data by jump transmission.

  Then, the unit controller 52 of the server apparatus 1 suspects the authenticity of the previously received meter reading data due to the time correction, so the meter reading data is backed up after the previous update of the clock (timer 13). Request transmission by jump transmission. In response to this, the radio communication control unit 12 of the unit power meter of the terminal station sets an accident flag in the redundant frame D5 and transmits the meter reading data of the corresponding period. For example, the data to which the accident flag is added is not directly used for charging, but can be processed as reference data, for example, so as to correspond to the credibility of the data.

  As described above, the power supply monitoring and control system according to the present embodiment is configured by arranging unit power meters T serving as terminal stations in a tree shape in the server device 1 that manages a network. In the wireless communication system in which the server device 1 issues a scheduled notification to the server device 1, the server device 1 side manages the serial number of data that is regularly reported from the unit power meter T, and if the number is skipped, Therefore, the server apparatus 1 does not have to return an ACK each time, and even if many terminal stations are installed in a low-rate PHS communication line, the data is not received. Traffic can be reduced while transmitting reliably.

  In addition, in the unit power meter T, when the self-diagnosis unit 16 or the in-flight communication control unit 23 detects the occurrence of arbitrarily generated event data, the wireless communication control unit 12 sends a jump each time, By adding to the next scheduled notification data and transmitting, reliable transmission can be realized without ACK even when irregular event data occurs.

  Furthermore, the unit power meter T has a self-diagnosis unit 16, and when the self-diagnosis unit 16 detects the occurrence of a clock abnormality, the wireless communication control unit 12 performs data after the final normal determination is performed. Since the accident flag is attached and retransmitted, the server device 1 can recognize the low-credibility data among the meter-reading data, which is reflected in subsequent processing such as billing processing and is used to improve the service. be able to.

  In the above-described embodiment, an example in which the management device includes the server device 1 and the gateway GW is shown. This is an example of a management device, and may be a management device including a plurality of server devices, a management device that does not use the gateway GW, or the like. Moreover, although PHS was illustrated as a radio | wireless communication system between each unit power meter T which is a terminal station, another radio | wireless communication system is also employable. For example, the present invention can be applied to a server and a client constituting a wireless LAN. Furthermore, a wired communication system may be adopted instead of the wireless communication system. Furthermore, in the above embodiment, each unit power meter T, which is a terminal station, is shown as an example of being connected to a network in a tree shape having a plurality of hierarchies. Instead of this, each unit power meter T may be individually connected to the server apparatus 1.

1 is a block diagram showing an overall configuration of a power supply monitoring control system according to an embodiment of the present invention. It is a front view which shows one structural example of the unit wattmeter used for the said electric power feeding monitoring control system. It is a block diagram which shows one structural example of the radio | wireless communication apparatus in the said unit power meter. It is a block diagram which shows the example of 1 structure of a server apparatus. It is a figure which shows schematic structure of the meter-reading data alert | reported regularly. It is a figure for demonstrating the scheduled alerting | reporting operation | movement of one Embodiment of this invention. It is a figure for demonstrating the scheduled notification operation | movement of other form of implementation of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Server apparatus 2 Network 3 Load switch 4 Electricity meter 5 Wireless communication apparatus 6 Terminal block 11 Radio | wireless machine 12 Wireless communication control part 13 Timer 14, 24 Memory 15, 51 Input operation part 16 Self-diagnosis part 21, 22, 54 Face 23 In-machine communication control unit 52 Unit control unit 53 Database T1-1 to T1-5, T1-11, T1-12 Unit power meter T2-1 to T2-10, T2-11 to T2-14 Unit power meter T3- 1 to T3-5, T3-11, T3-12 unit power meter T4-1 to T4-4, T4-11, T4-12 unit power meter T5-1, T5-2, T5-11, T5-12 unit Wattmeter GWa, GWb, GWc, ... Gateway

Claims (5)

In a communication system comprising a plurality of terminal stations in a management device, wherein each of the terminal stations issues first and second data to the management device at regular and occasional times,
The terminal station is
Data acquisition means for acquiring the first and second data;
Communication means;
The first and second data acquired by the data acquisition unit are notified to the communication unit at the predetermined time or at any time predetermined for each of the data, and the first data to be issued at any time After the second data is generated, the first data to be reported at the next scheduled time is merged with the second data that has been reported at any time to create the data to be actually reported, Communication control means for causing the communication means to issue a report ,
When the management device receives the first and second data, the management device does not return a response indicating that the data has been received . The terminal station is
Storage means for storing the first data acquired by the data acquisition means;
A self-diagnosis means;
When the occurrence of an abnormality is detected by the self-diagnosis unit, the communication control unit notifies the management device of this, and in response to the request from the management device to retransmit data, the self-diagnosis unit 2. The communication system according to claim 1, wherein the first data after the final normality determination is read out from the storage means, and the data is retransmitted with an accident flag attached thereto.   3. The communication system according to claim 1, wherein the first data transmitted from each terminal station to the management apparatus is sensing data, and control data is transmitted from the management apparatus to each terminal station. .   The communication system according to claim 1, wherein the communication unit performs communication in a PHS transceiver mode.   The communication system according to any one of claims 1 to 4, wherein each terminal station is provided with a watt-hour meter for obtaining sensing data and a load switch for performing switching control in response to the control data. A power supply monitoring control system characterized by that.

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