WO2021184546A1

WO2021184546A1 - Deep coverage collection system for electricity consumption information

Info

Publication number: WO2021184546A1
Application number: PCT/CN2020/092976
Authority: WO
Inventors: 刘卉; 邓伟; 欧清海; 刘军雨; 王艳茹; 马文洁; 张宁池; 宋继高; 张洁; 王炫中; 相里瑜; 张春玲; 章灵芝
Original assignee: 北京中电飞华通信有限公司; 国网信息通信产业集团有限公司
Priority date: 2020-03-19
Filing date: 2020-05-28
Publication date: 2021-09-23
Also published as: CN111402562A

Abstract

The present application discloses a deep coverage collection system for electricity consumption information. A radio remote slave terminal is provided to acquire electricity consumption data of an electricity meter, send the electricity consumption data to a radio remote master terminal by means of radio spread spectrum communication, and then output the electricity consumption data by means of the radio remote master terminal, so that a communication distance for collecting electricity consumption data of an electricity meter can be increased, and electricity consumption data in blind areas, such as indoors, underground and shadow areas can be collected, improving the integrity of acquired electricity consumption information; and in addition, the radio spread spectrum communication has good receiving sensitivity and good anti-interference ability.

Description

A deep coverage collection system for electricity consumption information

Cross-references to related applications

This application is filed based on a Chinese patent application with an application number of 202010198358.5 and an application date of March 19, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application by reference.

Technical field

This application relates to the technical field of electricity usage information collection, in particular to a system for collecting electricity usage information in-depth coverage.

Background technique

In the current electricity consumption and distribution system, it is necessary to remotely collect electricity usage information. At present, the remote communication method between the master station and the electricity usage information collection terminal mainly adopts the power wireless private network communication scheme. Compared with the public network communication method, the power wireless private network It can meet the basic requirements of the transmission carrier of power business.

However, the existing power wireless private network communication system still has coverage blind areas such as basements, dense urban areas, and shadow areas of buildings in practical applications. Through the above-mentioned communication scheme, the electricity consumption information in these blind areas cannot be collected. It can be seen that the completeness of obtaining electricity consumption information using the above scheme is poor.

Summary of the invention

In view of this, the purpose of this application is to propose a system for collecting power usage information in-depth coverage, so as to improve the completeness of obtaining power usage information.

Based on the above-mentioned purpose, this application provides a system for collecting power consumption information in-depth coverage, including: an electric meter, a wireless remote master terminal and a number of wireless remote slave terminals; the electric meter and the wireless remote slave terminal are connected by a cable; wireless The remote master terminal and several wireless remote slave terminals are connected through wireless spread spectrum communication;

Electricity meter, used to send electricity consumption data to the wireless remote slave end via cable;

The wireless remote slave end is used to receive the electricity data through the cable, and send the electricity data to the wireless remote master through wireless spread spectrum communication;

The main terminal is remotely wirelessly used to output power consumption data.

Preferably, the communication frequency between the wireless remote master terminal and the wireless remote slave terminal is 223MHz～235MHz or 470MHz～510MHz.

Preferably, the communication between the wireless remote slave terminal and the electric meter, and the communication output of the wireless remote master terminal all adopt the serial asynchronous type, and the baud rate is 2400 bit/s.

Preferably, the wireless transmission power of the wireless remote master terminal and the wireless remote slave terminal are both 50 mW.

Preferably, the wireless remote slave end includes a first LoRa transceiver, a first micro-control unit, a first transmission interface and a first power conversion circuit;

The first LoRa transceiver is used to transmit power consumption data in a wireless spread spectrum communication mode;

The first micro-control unit is used to collect the electricity consumption data of the electric meter through the first transmission interface;

The first power conversion circuit is used to convert the external power supply into a power supply with a specification that is compatible with the first Lora transceiver and the first micro-control unit;

The wireless remote master terminal includes a second LoRa transceiver, a second micro-control unit, a second transmission interface and a second power conversion circuit;

The second LoRa transceiver is used to receive electricity data in a wireless spread spectrum communication method;

The second micro-control unit is configured to output power consumption data through the second transmission interface;

The second power conversion circuit is used to convert the external power supply into a power supply specification adapted to the second Lora transceiver and the second micro-control unit.

Preferably, the first transmission interface and the second transmission interface are both RS-485 bus interfaces.

Preferably, the system further includes: a concentrator and a service master station, the concentrator and the wireless remote master terminal are connected by a cable, and the concentrator and the service master station are connected by a communication link;

The wireless remote master terminal is specifically used to send the power consumption data to the business master station through the concentrator.

Preferably, the remote wireless remote is installed in the coverage blind area of the power wireless private network communication.

It can be seen from the above that the power consumption information deep coverage collection system provided by this application acquires the power consumption data of the meter by setting a wireless remote slave end, and sends the power consumption data to The wireless remote main end, and then the main end wirelessly, output power consumption data, can extend the communication distance of collecting electricity consumption data of electric meters, and collect electricity consumption data of indoor, underground and shadow areas covering blind areas, and improve Obtain the completeness of electricity consumption information, and the wireless spread spectrum communication has good receiving sensitivity and good anti-interference ability.

Description of the drawings

The drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments consistent with the disclosure, and are used together with the specification to explain the principle of the disclosure.

FIG. 1 is a schematic diagram of the architecture of a deep coverage acquisition system according to an embodiment of the application;

FIG. 2 is a schematic diagram of a wireless remote slave end architecture according to an embodiment of the application;

FIG. 3 is a schematic diagram of a wireless remote master-end architecture according to an embodiment of the application;

4 is a schematic diagram of a deep coverage collection system including a concentrator and a service master station according to an embodiment of the application;

FIG. 5 is a schematic diagram of the external interface of the deep coverage collection system according to an embodiment of the application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the following further describes the present application in detail in conjunction with specific embodiments and with reference to the accompanying drawings.

It should be noted that all the expressions "first" and "second" used in the examples of this application are used to distinguish two entities with the same name but not the same or parameters that are not the same, as shown in "first" and "second" Only for the convenience of presentation, it should not be construed as a limitation to the embodiments of the present application, and subsequent embodiments will not describe this one by one.

In order to achieve the above objective, an embodiment of the present application provides a system for collecting power usage information in-depth coverage, as shown in FIG. The remote slave end 300 is connected through a cable, and the wireless remote master end 200 and the wireless remote slave end 300 are connected through wireless spread spectrum communication;

The electricity meter 100 is used to send electricity data to the wireless remote end 300 through a cable, and the wireless remote slave end 300 is used to receive electricity data through the cable, and send electricity data to the wireless remote through wireless spread spectrum communication. The main end 200, the wireless remote main end 200 is used to output electricity data.

For example, the cable between the electric meter 100 and the remote wireless slave terminal 300 may be an RS-485 bus, or may also be a can bus, which is not specifically limited.

In this application, the power meter 100, the wireless remote master terminal 200 and the wireless remote slave terminal 300 are set. The wireless remote slave terminal 300 receives the power consumption data of the power meter 100 through a cable, and sends the power consumption data to the wireless remote terminal through spread spectrum communication. The remote master terminal 200 and the wireless remote master terminal 200 output the electricity consumption data, which can extend the communication distance for collecting the electricity consumption data of the electric meter 100, and collect the electricity consumption data of the indoor, underground, and shadow areas covered blind areas, and improve the acquisition usage. The integrity of the electrical information, and the wireless spread spectrum communication has good receiving sensitivity and good anti-interference ability.

As an implementation manner, the communication frequency between the remote wireless master terminal 200 and the wireless remote slave terminal 300 is 223MHz～235MHz or 470MHz～510MHz. The spread spectrum communication in the above frequency band has high receiving sensitivity and strong anti-interference ability. High-rise building penetration and basement tortuous space transmission have great advantages, and are suitable for extended coverage of indoor and underground spaces that are difficult to cover by power wireless communication signals.

As an implementation manner, the communication between the wireless remote slave terminal 300 and the electric meter 100 and the communication output of the wireless remote master terminal 200 both adopt the serial asynchronous mode, and the baud rate is 2400 bit/s. Serial asynchronous communication can support two-way communication without a synchronous clock signal, and the hardware cost is low. For example, the communication format includes 1 start bit, 8 data bits, 1 parity bit, and 1 stop bit.

As an implementation manner, the wireless transmission power of the remote wireless master terminal 200 and the wireless remote slave terminal 300 are both 50 mW, which consumes less energy and saves costs.

As an implementation manner, the wireless remote slave terminal 300 includes a first LoRa transceiver 310, a first micro-control unit 320, a first transmission interface 330, and a first power conversion circuit 340, as shown in FIG. 2;

Wherein, the first LoRa transceiver 310 is used to transmit power consumption data in a wireless spread spectrum communication mode;

The first micro-control unit 320 is configured to collect the electricity consumption data of the electric meter 100 through the first transmission interface 330;

The first power conversion circuit 340 is configured to convert the external power supply into a power supply with a specification adapted to the first LoRa transceiver 310 and the first micro-control unit 320;

The wireless remote master terminal 200 includes a second LoRa transceiver 210, a second micro-control unit 220, a second transmission interface 230, and a second power conversion circuit 240, as shown in FIG. 3;

The second LoRa transceiver 210 is used to receive power consumption data in a wireless spread spectrum communication mode;

The second micro-control unit 220 is configured to output the power consumption data through the second transmission interface 230;

The second power conversion circuit 240 is used to convert the external power supply into a power supply of a specification compatible with the second LoRa transceiver 210 and the second micro-control unit 220.

For example, the input power of the first power conversion circuit 340 and the second power conversion circuit 240 can be 220V 50Hz. The LoRa transceiver is based on low-power wide area network technology and is a low-power long-distance wireless data transmission module. The above configuration can improve the versatility of the wireless remote master terminal 200 and the wireless remote slave terminal 300, and make the data transmission effect better.

In the foregoing embodiment, the cable between the electric meter 100 and the remote wireless slave terminal 300 and the output mode of the wireless remote master 200 are RS-485 bus. In this case, as an implementation manner, the first The transmission interface 330 and the second transmission interface 230 are both RS-485 bus interfaces, which have good communication speed and stability.

As an implementation manner, the power consumption information deep coverage collection system also includes a concentrator and a service master station. As shown in Figs. 4 and 5, the concentrator and the wireless remote master terminal 200 are connected by a cable. The concentrator and the main service station are connected by a communication link, and the wireless remote main terminal 200 is specifically used to send the power consumption data to the main service station through the concentrator.

For example, the above-mentioned communication link can be a wireless private network, a wireless public network, an optical fiber, etc. By setting up a concentrator and a service master station, the electricity consumption data can be transmitted in a centralized manner to facilitate monitoring.

As an implementation manner, the wireless remote slave terminal 300 is installed in the coverage blind area of the power wireless private network communication to further extend the communication distance for collecting the electricity consumption data of the electric meter 100. For example, the coverage blind area may be an outdoor shadow area or an indoor area. Cover blind areas, etc., such as installing a wireless remote slave end 300 on each floor of the building.

As the construction of the energy Internet continues to deepen, the scale and intelligence of the distribution network have been greatly improved, and the quality of electricity service requirements have continued to increase. Grid operations, electricity services, and enterprise management are undergoing historical changes. Data collection at all levels of the grid The demand for data such as interaction with control and user information is growing explosively. The demand for wireless access and mobile services continues to increase, and the power wireless private network is facing high-quality and efficient access requirements. However, the existing power wireless private network communication system still has coverage blind areas such as basements, dense urban areas, and shadow areas of buildings in practical applications, and cannot achieve full coverage.

On the other hand, the local communication methods of electricity information collection services mainly include broadband power line carrier, narrowband power line carrier, and micro-power wireless. The low-voltage power line broadband carrier communication modulation method adopts multi-carrier modulation (OFDM, Orthogonal Frequency Division Multiplexing), the carrier frequency is 1 to 34 MHz, and the information transmission rate can reach 200 Mbit/s. This communication method occupies frequency bandwidth, high data transmission rate, large data capacity, two-way transmission, no need to lay additional communication lines, and easy installation; it can easily extend the power communication network to the low-voltage user side, and realize the data collection of the user's electric meter 100 And control. However, this communication method also faces problems such as short transmission distance, greater influence by power lines, and poor adaptability to overhead wires and cables in mixed-mode power lines. The low-voltage power line narrowband carrier communication adopts the keyed phase modulation modulation mode, the carrier center frequency is 76.8kHz, the frequency band range is ±16kHz, and the information transmission rate is 1.6kbit/s. The data transmission rate is low, and two-way transmission. Compared with the broadband carrier, the transmission distance is longer, but the success rate of one communication is less than 100%. It requires multiple repeated collections to obtain all the data, and the implementation and support for comprehensive remote control and remote pre-purchase methods are not enough.

In this application, by setting up a wireless remote slave terminal 300, acquiring the electricity consumption data of the electric meter 100, sending the electricity consumption data to the wireless remote master terminal 200 through wireless spread spectrum communication, and then using the wireless remote master terminal 200. Output electricity consumption data, which can extend the communication distance for collecting electricity consumption data of the electricity meter 100, and collect electricity consumption data in covered blind areas such as indoors, underground, and shadow areas, so as to achieve full coverage and improve the integrity of obtaining electricity consumption information.

As an implementation manner, the system also has an address management function. The remote wireless master terminal 200 and the remote wireless slave terminal 300 have unique address identifiers in the local network for establishing a relay routing relationship. It can automatically manage the relay routing relationship of subordinate nodes without human intervention.

The wireless remote master terminal 200 and the wireless remote slave terminal 300 have carrier sensing and collision avoidance functions.

The wireless remote master end 200 and the wireless remote slave end 300 should have the functions of automatic networking and automatic routing establishment, that is, without manual intervention, the wireless remote master end 200 and the wireless remote slave end 300 can be found based on neighbors, with the least transmission Paths and other mechanisms can automatically establish network routes; at the same time, when a relay node in the route fails, the system can immediately automatically generate a new route to ensure reliable data transmission; when a new node is added to the system, other Nodes can also quickly establish neighbor relationships and complete routing updates.

The wireless remote master terminal 200 and the wireless remote slave terminal 300 have network management functions, including the functions of querying the version information of the master node and the slave node, routing information query and setting.

The system can adopt the star connection networking mode of self-organizing network when networking, the networking is simple, and the signal transmission reliability is high.

The installation of this system is simple and convenient. Most of the new equipment such as wireless remote slave end 300 can be installed in the original electric facilities such as 100 electric meters and power distribution rooms.

Compared with PLC carrier communication, this system has the advantages of faster communication response speed, 100% communication success rate, 3 kilometers coverage radius, and deep application of electric energy meter information collection.

Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the idea of this application, the above embodiments or The technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in the details for the sake of brevity.

In addition, in order to simplify the description and discussion, and in order not to make the application difficult to understand, the well-known power/ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. . In addition, the devices may be shown in the form of block diagrams in order to avoid making the application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the application will be implemented (ie , These details should be completely within the understanding of those skilled in the art). In the case where specific details (for example, a circuit) are described to describe the exemplary embodiments of the present application, it is obvious to those skilled in the art that it may be possible without these specific details or when these specific details are changed. Implement this application under. Therefore, these descriptions should be considered illustrative rather than restrictive.

Although the present application has been described in conjunction with the specific embodiments of the present application, many substitutions, modifications and variations of these embodiments will be apparent to those of ordinary skill in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the discussed embodiments.

The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims

A system for collecting power consumption information in-depth coverage, including: an electric meter, a wireless remote master terminal and a plurality of wireless remote slave terminals; the electric meter and the wireless remote slave terminal are connected by a cable; the wireless remote The remote master terminal and several wireless remote slave terminals are connected through wireless spread spectrum communication;

The electricity meter is used to send electricity usage data to the wireless remote slave end through the cable;

The wireless remote slave end is configured to receive the electricity consumption data through the cable, and send the electricity consumption data to the wireless remote master end through wireless spread spectrum communication;

The wireless remote master terminal is used to output the power usage data.
The power usage information deep coverage collection system according to claim 1, wherein the communication frequency between the remote wireless master terminal and the remote wireless slave terminal is 223MHz～235MHz or 470MHz～510MHz.
The power usage information deep coverage collection system according to claim 1, wherein the communication between the wireless remote slave end and the electric meter, and the communication output of the wireless remote master end adopt serial asynchronous, wave The special rate is 2400bit/s.
The power usage information deep coverage collection system according to claim 1, wherein the wireless transmission power of the wireless remote master terminal and the wireless remote slave terminal are both 50 mW.
The power usage information deep coverage collection system according to claim 1, wherein the wireless remote slave end includes a first LoRa transceiver, a first micro-control unit, a first transmission interface, and a first power conversion circuit;

The first LoRa transceiver is configured to transmit the power consumption data in a wireless spread spectrum communication mode;

The first micro-control unit is configured to collect electricity consumption data of the electric meter through the first transmission interface;

The first power conversion circuit is configured to convert an external power supply into a power supply of a specification that is compatible with the first Lora transceiver and the first micro-control unit;

The remote wireless master terminal includes a second LoRa transceiver, a second micro-control unit, a second transmission interface, and a second power conversion circuit;

The second LoRa transceiver is configured to receive the power consumption data in a wireless spread spectrum communication mode;

The second micro-control unit is configured to output the power consumption data through the second transmission interface;

The second power conversion circuit is used to convert the external power supply into a power supply specification adapted to the second Lora transceiver and the second micro-control unit.
The power consumption information deep coverage collection system according to claim 5, wherein the first transmission interface and the second transmission interface are both RS-485 bus interfaces.
The power usage information deep coverage collection system according to claim 1, wherein the system further comprises: a concentrator and a service master station, the concentrator and the wireless remote master terminal are connected by a cable, The concentrator and the service master station are connected through a communication link;

The wireless remote master terminal is specifically configured to send the power usage data to the service master station through the concentrator.
The power usage information deep coverage collection system according to claim 1, wherein the wireless remote slave end is installed in the coverage blind area of the power wireless private network communication.