CN110988784A - Error verification system for electric energy metering equipment - Google Patents
Error verification system for electric energy metering equipment Download PDFInfo
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- CN110988784A CN110988784A CN201911382716.1A CN201911382716A CN110988784A CN 110988784 A CN110988784 A CN 110988784A CN 201911382716 A CN201911382716 A CN 201911382716A CN 110988784 A CN110988784 A CN 110988784A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The application provides an electric energy metering equipment error verification system includes: the system comprises electric energy metering equipment and a verification terminal; the electric energy metering device specifically comprises: the system comprises an MCU module and a first wireless communication module; the verification terminal specifically comprises: the second wireless communication module and the processing module; the pulse signal output end of the MCU module is connected with the signal input end of the first wireless communication module; the wireless signal transmitting end of the first wireless communication module is in communication connection with the wireless signal receiving end of the second wireless communication module; the signal output end of the second wireless communication module is connected with the pulse signal input end of the processing module, and the processing module is configured to perform error verification on the electric energy metering equipment according to the received high-frequency pulse signal. This application is through adopting wireless radio frequency communication mode, carries out the error verification with high frequency pulse signal transmission to examination terminal, need not to carry out the wiring, also does not carry out strict transmission and reception and aims at the requirement, has solved the technical problem that prior art examination inefficiency.
Description
Technical Field
The application relates to the technical field of equipment verification, in particular to an error verification system for electric energy metering equipment.
Background
The electric energy metering equipment is one of the most commonly used equipment of an electric power system, and before the electric energy metering equipment is put into use formally, error detection is required to be carried out according to a high-frequency pulse signal output by the electric energy metering equipment.
The existing error detection mode is generally to acquire a high-frequency pulse signal output by an electric energy metering device and send the high-frequency pulse signal to a rear-end detection device for analysis and detection, but the existing high-frequency pulse signal transmission commonly uses electric pulse transmission and optical pulse transmission, and has the technical problem of low verification efficiency.
Disclosure of Invention
The application provides an electric energy metering equipment error verification system for solve the technical problem that the verification efficiency is low that current error detection mode exists.
In view of this, the present application provides an error calibration system for an electric energy metering device, including: the system comprises electric energy metering equipment and a verification terminal;
the electric energy metering device specifically comprises: the system comprises an MCU module and a first wireless communication module;
the verification terminal specifically comprises: the second wireless communication module and the processing module;
the pulse signal output end of the MCU module is electrically connected with the signal input end of the first wireless communication module;
the wireless signal transmitting end of the first wireless communication module is in communication connection with the wireless signal receiving end of the second wireless communication module;
the signal output end of the second wireless communication module is electrically connected with the pulse signal input end of the processing module, and the processing module is configured to perform error verification on the electric energy metering equipment according to the received high-frequency pulse signal.
Optionally, the first wireless communication module is specifically configured to: according to a preset communication frequency point, the high-frequency pulse signal received from the MCU module is sent to the second wireless communication module;
the second wireless communication module is specifically configured to: and receiving the high-frequency pulse signal sent by the first wireless communication module according to the preset communication frequency point.
Optionally, the communication frequency point specifically includes: any frequency point in 2360MHZ-2460MHZ frequency band or 2400MHZ-2500MHZ frequency band.
Optionally, the first wireless communication module and the second wireless communication module are both 2.4G radio frequency communication modules.
Optionally, the first wireless communication module and the second wireless communication module are both bluetooth modules.
Optionally, the method further comprises: a pull-up resistor;
the pull-up resistor is connected with the signal input end of the first wireless communication module.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides an electric energy metering equipment error verification system includes: the system comprises electric energy metering equipment and a verification terminal; the electric energy metering device specifically comprises: the system comprises an MCU module and a first wireless communication module; the verification terminal specifically comprises: the second wireless communication module and the processing module; the pulse signal output end of the MCU module is connected with the signal input end of the first wireless communication module; the wireless signal transmitting end of the first wireless communication module is in communication connection with the wireless signal receiving end of the second wireless communication module; the signal output end of the second wireless communication module is connected with the pulse signal input end of the processing module, and the processing module is configured to perform error verification on the electric energy metering equipment according to the received high-frequency pulse signal.
This application is through adopting the wireless radio frequency communication mode with the high frequency pulse signal of electric energy metering equipment output, transmits to examination terminal and carries out the error verification, need not to carry out the wiring, also does not carry out strict transmission and receives the alignment requirement, has reduced the degree of difficulty that the examination set up, has improved the efficiency of examination simultaneously, has solved prior art because of the loaded down with trivial details technical problem that the examination inefficiency that leads to of high frequency pulse signal transmission mode.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an error calibration system for an electric energy metering device provided by the present application;
fig. 2 is a circuit diagram of a first wireless communication module in an error verification system for an electric energy metering device according to the present application;
fig. 3 is a circuit diagram of a second wireless communication module in the error verification system for the electric energy metering device provided by the present application.
Detailed Description
The embodiment of the application provides an error verification system for electric energy metering equipment, which is used for solving the technical problem of low verification efficiency existing in the existing error detection mode.
It should be noted that the conventional high-frequency pulse transmission method commonly used for the error calibration method of the electric energy metering equipment based on the high-frequency pulse signal includes: the detection scheme requires correct wiring and level matching of the two devices, and complicated wiring work easily causes wiring errors; the optical pulse transmission is to send out an optical pulse signal through an optical pulse transmitter arranged in the electric energy metering equipment, and to use an optical pulse receiving head equipped on the detection equipment, the optical pulse receiving head is converted into a high-frequency pulse to be sent to the detection equipment, but the optical pulse transmission mode has high requirements on the alignment precision of a pulse transmitting end and a pulse receiving end, and the positions of the transmitting end and the receiving end need to be frequently adjusted, so that the process is extremely complicated.
In order to make the objects, features and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 3, an embodiment of the present application provides an error calibration system for an electric energy metering device, including: the system comprises an electric energy metering device 1 and a verification terminal 2;
the electric energy metering device 1 specifically includes: an MCU module 11 and a first wireless communication module 12;
the verification terminal 2 specifically includes: a second wireless communication module 21 and a processing module 22;
the pulse signal output end of the MCU module 11 is electrically connected with the signal input end of the first wireless communication module 12;
the wireless signal transmitting end of the first wireless communication module 12 is in communication connection with the wireless signal receiving end of the second wireless communication module 21;
the signal output end of the second wireless communication module 21 is electrically connected with the pulse signal input end of the processing module, and the processing module is configured to perform error verification on the electric energy metering equipment according to the received high-frequency pulse signal.
Further, the first wireless communication module 12 is specifically configured to: according to a preset communication frequency point, sending a high-frequency pulse signal received from the MCU module 11 to the second wireless communication module 21;
the second wireless communication module 21 is specifically configured to: and receiving the high-frequency pulse signal sent by the first wireless communication module 12 according to a preset communication frequency point.
Further, the communication frequency point specifically includes: any frequency point in 2360MHZ-2460MHZ frequency band or 2400MHZ-2500MHZ frequency band.
Further, the first wireless communication module 12 and the second wireless communication module 21 are both 2.4G radio frequency communication modules.
Further, the first wireless communication module 12 and the second wireless communication module 21 are both bluetooth modules.
In order to clarify the inventive content of the present application, the following detailed description will be made on the technical solution of the present application with reference to an application example.
In this application example, a bluetooth module is used as the first wireless communication module and the second wireless communication module, specifically, referring to fig. 2, the electric energy metering device outputs a high-frequency pulse signal play through a GPIO of 48 pins of an MCU module in the metering device according to power and a pulse constant, 27 pins of a bluetooth chip receive the high-frequency pulse signal play, the 27 pin signal play of the bluetooth chip needs to be configured as a break port, and the bluetooth chip sends the high-frequency pulse signal to a bluetooth chip in the verification device through a 2.4G wireless antenna.
Then, referring to fig. 3, the bluetooth receiving device equipped on the verification terminal is used, the bluetooth chip on the verification terminal receives the high-frequency pulse signal through the 2.4G wireless antenna, the 27 pins of the bluetooth chip output the high-frequency pulse signal to the processing module of the verification terminal, and the processing module performs error calculation according to the high-frequency pulse signal, so as to implement the high-frequency pulse verification of the electric energy metering device.
It can be understood that the common power supply interference frequency is generally within 100M, the interference received at the pulse detection end is usually more than several hundred KHZ and less than several mhz, for example, the fast transient pulse group of the EMC experiment is 4KHZ, the interference frequency points are 5KHZ and 100KHZ, the lightning surge is 4KHZ or 6KHZ, and the like.
The high-frequency pulse verification of the embodiment adopts a 2.4G frequency band, avoids the common signal interference within 100MHZ brought by a plurality of places of the switching power supply equipment and the electromagnetic radiation equipment when the detection equipment detects the high-frequency pulse, and ensures the stability of signal transmission.
In addition, in the actual verification process, a plurality of electric energy metering devices are often verified through a plurality of verification terminals respectively, at this time, in order to avoid interference among a plurality of devices, the bluetooth module in the electric energy metering device of the embodiment can freely set the transmission power frequency point, so that the emitted high-frequency pulse signals can be received by the verification terminals with the same frequency point, and the high-frequency pulse pairs are prevented from other co-frequency interference.
Further, still include: a pull-up resistor;
the pull-up resistor is connected with the signal input end of the first wireless communication module.
It should be noted that, in order to be compatible with the existing electric energy meter, the external bluetooth module is required to transmit the high-frequency pulse signal, generally, the output pulse of the electric energy meter is open-drain output, and a pull-up resistor needs to be added to the pulse input signal of the external bluetooth module. Therefore, high-frequency pulse is transmitted to the external 2.4G Bluetooth wireless module, and then the high-frequency pulse can be transmitted to the verification terminal with the Bluetooth module through the external 2.4G Bluetooth wireless module.
Meanwhile, in the verification system of the embodiment, the frequency of the high-frequency pulse signal depends on the rising edge and the falling edge of the MCU module, the 2.4G transmission delay is small, the delay is also fixed delay, and the novel 2.4G wireless transmission is adopted in application schemes such as wide-range high-precision electric energy meters and the like, so that the verification system has remarkable advantages.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (6)
1. An error verification system for an electric energy metering device, comprising: the system comprises electric energy metering equipment and a verification terminal;
the electric energy metering device specifically comprises: the system comprises an MCU module and a first wireless communication module;
the verification terminal specifically comprises: the second wireless communication module and the processing module;
the pulse signal output end of the MCU module is electrically connected with the signal input end of the first wireless communication module;
the wireless signal transmitting end of the first wireless communication module is in communication connection with the wireless signal receiving end of the second wireless communication module;
the signal output end of the second wireless communication module is electrically connected with the pulse signal input end of the processing module, and the processing module is configured to perform error verification on the electric energy metering equipment according to the received high-frequency pulse signal.
2. The system for error verification of electrical energy metering equipment of claim 1, wherein the first wireless communication module is specifically configured to: according to a preset communication frequency point, the high-frequency pulse signal received from the MCU module is sent to the second wireless communication module;
the second wireless communication module is specifically configured to: and receiving the high-frequency pulse signal sent by the first wireless communication module according to the preset communication frequency point.
3. The system for calibrating the error of the electric energy metering equipment according to claim 2, wherein the communication frequency point specifically comprises: any frequency point in 2360MHZ-2460MHZ frequency band or 2400MHZ-2500MHZ frequency band.
4. The error verification system for the electric energy metering equipment according to claim 3, wherein the first wireless communication module and the second wireless communication module are 2.4G radio frequency communication modules.
5. The error verification system for electric energy metering equipment according to claim 3, wherein the first wireless communication module and the second wireless communication module are both Bluetooth modules.
6. The error verification system for electric energy metering equipment according to claim 1, further comprising: a pull-up resistor;
the pull-up resistor is connected with the signal input end of the first wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911382716.1A CN110988784A (en) | 2019-12-27 | 2019-12-27 | Error verification system for electric energy metering equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911382716.1A CN110988784A (en) | 2019-12-27 | 2019-12-27 | Error verification system for electric energy metering equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111882847A (en) * | 2020-04-16 | 2020-11-03 | 中国电力科学研究院有限公司 | Electric energy meter pulse transmission method and device based on low-power-consumption Bluetooth chip |
| CN112153591A (en) * | 2020-08-13 | 2020-12-29 | 国网浙江省电力有限公司营销服务中心 | Bluetooth converter for metering equipment verification and working method thereof |
| CN113608159A (en) * | 2021-06-25 | 2021-11-05 | 中国电力科学研究院有限公司 | Charging pile charging error testing method and system based on wireless communication technology |
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Cited By (4)
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| CN111882847A (en) * | 2020-04-16 | 2020-11-03 | 中国电力科学研究院有限公司 | Electric energy meter pulse transmission method and device based on low-power-consumption Bluetooth chip |
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Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Applicant after: China Southern Power Grid Power Technology Co.,Ltd. Address before: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Applicant before: GUANGDONG DIANKEYUAN ENERGY TECHNOLOGY Co.,Ltd. |
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Application publication date: 20200410 |