A metering box capable of identifying the position of an electric energy meter

Abstract

The present application provides a meter box capable of identifying the location of an electric energy meter, comprising: a meter box, an electric energy meter, an intelligent sensing terminal, and a communication relay; the plurality of electric energy meters are respectively connected to the external communication port of the intelligent sensing terminal via their respective communication interfaces; the external communication port of the intelligent sensing terminal is respectively connected to the input end of each communication relay provided for each electric energy meter, and the output end of each communication relay is connected to the communication bus of the intelligent sensing terminal; the intelligent sensing terminal can communicate with each electric energy meter in a time-division multiplexing manner by controlling the respective closure of the communication relays. The present application can realize the automatic discovery of newly installed and replaced electric energy meters, automatically identify the physical location of electric energy meters, and realize the automatic identification and entry of electric energy meter information, thereby reducing work errors such as human entry errors, greatly ensuring the accuracy of customer file information, and laying a solid foundation for precise service.

Description

Technical Field

[0001] The present application relates to the technical field of installation and use of meter boxes, and in particular to a meter box capable of identifying the position of an electric energy meter. Background Art

[0002] Meter boxes, where energy meters are installed, are located near the very end of the power grid. These meters play a crucial role in measuring energy consumption. Currently, low-voltage meter boxes in many regions have diverse specifications and lack unified management standards. When new installations, relocations, or equipment moves occur in substations, installation information is largely manually entered on-site. This inevitably leads to errors such as inaccurate meter wiring and mismatched household and meter files. Sometimes, ensuring the accuracy of customer file information requires repeated on-site verification and comparison, which inconveniences daily management and low-voltage meter reading and maintenance operations.

[0003] While smart meters with HPLC communication are gradually being introduced, smart meters that rely on RS485 communication remain the mainstream meter reading method. Currently, the energy meter collectors built into IoT meter boxes can automatically discover and read the energy meters within the meter box using RS485 automatic meter search technology. However, because RS485 uses a bus communication structure, it cannot determine the physical installation location of the energy meter. This still cannot prevent problems such as inaccurate meter wiring and mismatched household meter files. Summary of the Invention

[0004] The embodiment of the present application provides a meter box capable of identifying the meter position of an electric energy meter, so as to solve the problems of inaccurate meter wiring and mismatch between household meter files in the prior art.

[0005] The present application provides a meter box capable of identifying the position of an electric energy meter, comprising: a meter box, a plurality of electric energy meters installed in the meter box, an intelligent sensing terminal, and communication relays having the same number as the plurality of electric energy meters;

[0006] The intelligent sensing terminal has an external communication port whose number is equal to or greater than the number of the electric energy meters; the plurality of electric energy meters are connected to the external communication port of the intelligent sensing terminal through their respective communication interfaces;

[0007] The external communication port of the intelligent sensing terminal is respectively connected to the input end of each communication relay provided corresponding to each electric energy meter, and the output end of each communication relay is connected to the communication bus of the intelligent sensing terminal;

[0008] The intelligent sensing terminal can communicate with each of the electric energy meters in a time division multiplexing manner by controlling the respective closing of the communication relays.

[0009] Preferably, the electric energy meter marks a table position serial number for each electric energy meter according to the table position, and the intelligent sensing terminal records the data of each electric energy meter corresponding to the serial number.

[0010] Preferably, the communication bus of the intelligent sensing terminal adopts RS485 communication bus.

[0011] Preferably, the communication relay adopts a single-pole double-throw relay; the intelligent sensing terminal controls the power-on and power-off of the coil of the single-pole double-throw relay through the control terminal respectively set corresponding to each communication relay, thereby realizing the connection or disconnection of the communication bus of the intelligent sensing terminal with the external communication port.

[0012] Preferably, the intelligent sensing terminal is provided with an automatic meter search instruction, through which it can provide the control terminal with an electrical signal to control the power supply of the coil in turn, and control the external communication port of the communication bus connected to the intelligent sensing terminal; and record the electric energy meter ID corresponding to each serial number during the access process.

[0013] Preferably, the output port of the intelligent sensing terminal is connected to the concentrator via a broadband power line carrier module; the data of each electric energy meter in the meter box collected by the intelligent sensing terminal is transmitted to the concentrator via the broadband power line carrier module.

[0014] Preferably, the concentrator transmits the electric energy meter data collected by each meter box transmitted by the concentrator to the main station through remote communication; when recording the data, the main station records the data of each relevant electric energy meter corresponding to the meter position serial number in each meter box; through the identification number of the meter box itself combined with the meter position serial number, the electric energy metering unit ID corresponding to the electric energy meter can be confirmed.

[0015] Compared with the prior art, this application has the following advantages:

[0016] The present application provides a meter box capable of identifying the location of an electric energy meter, comprising: a meter box, and a plurality of electric energy meters installed in the meter box, an intelligent sensing terminal, and communication relays equal in number to the plurality of electric energy meters; the intelligent sensing terminal has an external communication port equal to or greater than the number of the electric energy meters; the plurality of electric energy meters are connected to the external communication port of the intelligent sensing terminal through their respective communication interfaces; the external communication port of the intelligent sensing terminal is respectively connected to the input end of each communication relay provided for each electric energy meter, and the output end of each communication relay is connected to the communication bus of the intelligent sensing terminal; the intelligent sensing terminal can communicate with each electric energy meter in a time-division multiplexing manner by controlling the respective closure of the communication relays. The present application can realize the automatic discovery of newly installed and replaced electric energy meters, automatically identify the physical location of the electric energy meters, and realize the automatic identification and entry of electric energy meter information, thereby reducing work errors such as human entry errors, greatly ensuring the accuracy of customer file information, and laying a solid foundation for precise service. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a wiring diagram of the meter box provided in an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the RS485 time-division multiplexing communication principle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific implementations disclosed below.

[0020] The embodiment of the present application provides a meter box capable of identifying the position of an electric energy meter. Figure 1 This is the wiring diagram of the meter box. Figure 2 This is a schematic diagram of the RS485 time-division multiplexing communication principle. The embodiment of this application introduces the working process of the meter box in conjunction with the accompanying drawings.

[0021] The meter box provided in this embodiment, which can identify the position of the electric energy meter, comprises: a meter box (not shown in the figure, here refers to the chassis in which other components are installed), a plurality of electric energy meters installed in the meter box, an intelligent sensing terminal 2, and communication relays of the same number as the plurality of electric energy meters. In this embodiment, the plurality of electric energy meters is specifically 4, Figure 1 The proteins are labeled 1-1 to 1-4 and are installed corresponding to epitopes 1 to 4.

[0022] The intelligent sensing terminal 2 has a number of external communication circuit output terminals equal to or greater than the number of the electricity meters; in this embodiment, RS485 ports are specifically used, and the external communication circuit output terminals are labeled RS485-1 to RS485-4 in the figure. The plurality of electricity meters are connected to the external communication circuit ports of the intelligent sensing terminal via their respective communication circuit interfaces. The intelligent sensing terminal refers to an end-point power grid intelligent sensing terminal, which is mainly used to collect electricity meter information at the end of the power supply system. Currently, there are mature products commonly used in this industry, and it can also be obtained based on general PLC equipment combined with certain control software.

[0023] The external communication circuit port of the intelligent sensing terminal 2 is connected to the circuit input of each communication relay provided for each energy meter, and the circuit output of each communication relay is connected to the communication bus of the intelligent sensing terminal 2. The communication relay is provided within the intelligent sensing terminal 2. In this embodiment, the communication relay is provided corresponding to the energy meter, and there are four communication relays 3-1 to 3-4.

[0024] The intelligent sensing terminal 2 can communicate with each of the electric energy meters in a time division multiplexing manner by controlling the respective closing of the communication relays.

[0025] In a broad sense, a meter box refers to the totality of metering instruments and auxiliary equipment necessary for measuring electric energy. Generally, a meter box has a three-dimensional cabinet shape. In this embodiment, the meter box also refers to the box body used to install all functional components. The electric energy meter is an instrument used to measure electric energy. The electric energy meter power consumption information collection terminal should be installed on a fixed fixture, mounting frame or grid plate. Several electric energy meters are installed inside the meter box, such as Figure 2 As shown, the horizontal distance between energy meters 1-1 and 1-2 should be no less than 30 mm, and the vertical distance between energy meters 1-1 and 1-3 should be no less than 80 mm. The distance between the energy meter, the intelligent sensing terminal, and the housing should be no less than 60 mm. The distance between the front of the energy meter and the observation window of the meter box should be between 15 and 20 mm.

[0026] In the embodiment of the present application, the positions of the electric energy meters are arranged as follows: Figure 2As shown, the electric energy meter is placed according to the table position mark serial number, such as table position 1, table position 2, etc. Taking the electric energy meter 1-1 at table position 1 as an example, the electric energy meter 1-1 is connected to the external communication circuit port RS485-1 of the intelligent sensing terminal 2 through the lower end communication interface, and the communication bus circuit of the intelligent sensing terminal 2 adopts the RS485 communication bus circuit. RS485 adopts a half-duplex working mode and supports multi-point data communication. The RS485 bus network topology generally adopts a terminal-matched bus structure, that is, a bus is used to connect each node in series. In the embodiment of the present application, the communication bus circuit of the intelligent sensing terminal 2 adopts the RS485 communication bus circuit, and the data of each electric energy meter is recorded corresponding to the serial number.

[0027] The number of communication relays is the same as the number of energy meters in the meter box, with each energy meter having a corresponding communication relay. The external communication circuit port of the intelligent sensing terminal 2 is connected to the input of each communication relay provided for each energy meter, and the output of each communication relay is connected to the communication bus of the intelligent sensing terminal 2.

[0028] like Figure 2 As shown, the communication relay adopts a single-pole double-throw relay, which includes a coil, a common terminal (i.e., the output terminal of the communication relay), a normally closed terminal, and a normally open terminal (i.e., the input terminal of the communication relay). When the coil is not energized, the common terminal and the normally closed terminal are connected. When the coil is energized, the common terminal and the normally open terminal are connected, and the communication interface of the corresponding electric energy meter is connected to the communication bus of the intelligent sensing terminal. The intelligent sensing terminal 2 is respectively provided with a control terminal for controlling the energization and de-energization of the coil of the single-pole double-throw relay, such as the control terminal Control-1, corresponding to each communication relay. The circuit common output terminal of the communication relay is connected to the RS485 communication bus circuit output terminal of the intelligent sensing terminal 2, and the control terminal Control-1 controls the energization and de-energization of the coil. When the coil is energized, the circuit common output terminal of the communication relay is connected to the circuit output terminal of the normally open terminal of the single-pole double-throw switch, thereby realizing the connection between the communication bus circuit of the intelligent sensing terminal 2 and the communication interface of the electric energy meter. The specific implementation process is as follows: the Control-1 control end provides an electrical signal to control the power supply of the coil of the relay 3-1, and the external communication port RS485-1 is connected to the RS485 communication bus of the intelligent sensing terminal 2 through the switch controlled by the relay, and the external communication circuit port RS485-1 is connected to the communication interface of the electric energy meter 1-1 at the table 1. In this way, the electric energy meter 1-1 establishes a communication connection with the central control unit in the intelligent sensing terminal 2, and the ID of the electric energy meter 1-1 at the table 1 can be recorded during the communication process between the two.

[0029] Furthermore, the intelligent sensing terminal 2 is provided with an automatic meter search instruction, through which it can provide the control terminal with an electrical signal to control the power supply of each relay coil in turn, and control the external communication port of the communication bus connected to the intelligent sensing terminal 2; and record the electric energy meter ID corresponding to each serial number during the access process.

[0030] It should be noted that the intelligent sensing terminal 2 uses time division multiplexing to communicate with each of the electric energy meters. Time division multiplexing is to use different time periods of the same physical connection to transmit different signals, which can also achieve the purpose of multi-channel transmission. Time division multiplexing uses time as the parameter for signal segmentation, so it is necessary to make sure that the signals do not overlap on the time axis. That is to say, in the embodiment of the present application, when the Control-1 control end circuit is powered on, the RS485 communication bus of the intelligent sensing terminal 2 is connected to the external communication port RS485-1 of the intelligent sensing terminal 2, and the ID of the electric energy meter 1-1 of table position 1 is recorded during the circuit access process. At the same time, when the Control-1 control end circuit is powered on, the Control-2 control end, the Control-3 control end and the Control-4 control end cannot be powered on, that is, the time division multiplexing method means that only one control end is allowed to work in the same time period.

[0031] The data collected by the intelligent sensing terminal 2 from each electric energy meter in the meter box is transmitted to the concentrator via the broadband power line carrier module. A concentrator is a central connection point device that connects terminals, computers, or communication devices. Broadband power line carrier, abbreviated as HPLC, is a high-speed power line carrier, also known as broadband power line carrier. It is a broadband power line carrier technology that transmits data on low-voltage power lines. A broadband power line carrier communication network uses power lines as a communication medium to achieve the aggregation, transmission, and interaction of electricity consumption information of low-voltage power users.

[0032] In the embodiment of the present application, after the above scheme collects the data information of the electric energy meter 1-1 at the meter position 1, the intelligent sensing terminal 2 summarizes the collected data of each electric energy meter in the meter box and transmits it to the concentrator through the broadband power line carrier module.

[0033] A master station, in basic link control, is a data station that ensures data transmission to one or more slave stations upon receiving a request. At a given moment, there can be only one master station on a data link. In this embodiment, the master station is the terminal that receives electricity meter data. The concentrator transmits the electricity meter data collected by each meter box to the master station via remote communication, and the master station records the meter data. It should be noted that each electricity meter in the meter box has a meter position serial number that identifies the meter position. Therefore, when recording data, the master station records the data of each electricity meter corresponding to the meter position serial number in each meter box.

[0034] Although the present application is disclosed as above with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

Claims

1. A meter box capable of identifying the position of an electric energy meter, characterized in that: include: A meter box, and a plurality of electric energy meters installed in the meter box, an intelligent sensing terminal, and communication relays equal in number to the plurality of electric energy meters; The intelligent sensing terminal has an external communication port whose number is equal to or greater than the number of the electric energy meters; the plurality of electric energy meters are connected to the external communication port of the intelligent sensing terminal through their respective communication interfaces; The external communication port of the intelligent sensing terminal is respectively connected to the input end of each communication relay provided corresponding to each electric energy meter, and the output end of each communication relay is connected to the communication bus of the intelligent sensing terminal; The intelligent sensing terminal can communicate with each of the electric energy meters in a time division multiplexing manner by controlling the respective closing of the communication relays; The communication relay adopts a single-pole double-throw relay; The intelligent sensing terminal controls the energization and de-energization of the coil of the single-pole double-throw relay through the control terminal respectively provided for each communication relay, thereby connecting or disconnecting the communication bus of the intelligent sensing terminal and the external communication port; The intelligent sensing terminal is provided with an automatic meter search instruction, through which it can provide the control terminal with an electrical signal to control the power supply of the coil in turn, control the external communication port of the communication bus connected to the intelligent sensing terminal; and record the electric energy meter ID corresponding to each serial number during the access process.

2. The meter box capable of identifying the position of an electric energy meter according to claim 1, characterized in that: The electric energy meter marks a table position serial number for each electric energy meter according to the table position, and the intelligent sensing terminal records the data of each electric energy meter corresponding to the serial number.

3. The meter box capable of identifying the position of an electric energy meter according to claim 1, characterized in that: The communication bus of the intelligent sensing terminal adopts RS485 communication bus.

4. The meter box capable of identifying the position of an electric energy meter according to claim 1, characterized in that: The output port of the intelligent sensing terminal is connected to the concentrator via a broadband power line carrier module; the data of each electric energy meter in the meter box collected by the intelligent sensing terminal is transmitted to the concentrator via the broadband power line carrier module.

5. The meter box capable of identifying the position of an electric energy meter according to claim 4, characterized in that: The concentrator transmits the electric energy meter data collected by each meter box transmitted by the concentrator to the main station through remote communication; when recording the data, the main station records the data of each electric energy meter corresponding to the meter position serial number in each meter box; The ID of the electric energy metering unit corresponding to the electric energy meter can be confirmed by combining the identification number of the meter box itself with the meter position serial number.

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