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Method and device for detecting electric discharge interference and electric energy meter provided with the device

A discharge signal and measurement signal technology, applied in the field of electric energy meters, can solve problems such as bad influence, small pulse width, and loss of function of electric energy meter electronic devices, and achieve the effect of warning and protecting equipment

Active Publication Date: 2010-10-20
SHENZHEN KAIFA TECH (CHENGDU) CO LTD
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Problems solved by technology

This artificial discharge interference method, the signal frequency generated by the discharge interference is high and irregular, the pulse width is small and the instantaneous voltage is high. Since there is no obvious damage trace, it is usually difficult to find
Moreover, this kind of interference and destruction will cause the electronic devices in the energy meter to lose their normal functions, causing irreparable losses to the metering, and its impact is quite bad

Method used

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  • Method and device for detecting electric discharge interference and electric energy meter provided with the device
  • Method and device for detecting electric discharge interference and electric energy meter provided with the device
  • Method and device for detecting electric discharge interference and electric energy meter provided with the device

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Embodiment Construction

[0016] In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0017] figure 1 It is a structural block diagram of the device for detecting discharge interference of the present invention. The device for detecting discharge interference of the present invention is mainly composed of a signal collector, a signal converter and a signal processor.

[0018] The first part is the signal collector, which is responsible for collecting the discharge interference signals generated by external equipment. The signal collector is a metal body installed on the electric energy meter, and the metal body can be composed of various forms such as metal plates, metal meshes, and metal wires.

[0019] The second part is the signal converter. Because the discharge signal collected by the signal collector has high frequency and irregularity, sm...

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Abstract

The invention relates to a method for detecting electric discharge interference and a device thereof and an electric energy meter provided with the device. The method includes the following steps: a signal acquirer is arranged to capture the electric discharge signal conducted by air; a signal converter is arranged to convert the electric discharge signal into a measuring signal the frequency and amplitude of which are limited in certain range; and a signal processor is arranged to analyze the measuring signal, namely the pulse number of the measuring signal is counted in the preset time period, if the accumulated count in unit time is in the preset range, the measuring signal is judged to be an electric discharge interference. The invention can accurately detect the man-made electric discharge interference event.

Description

technical field [0001] The invention relates to a measuring instrument, especially an electric energy meter. Background technique [0002] During the use of measuring instruments, such as electric energy meters, human interference and destruction are sometimes encountered. Among them, a new type of interference and destruction means is to use strong high-voltage generating equipment to interfere with the electric energy meter through air conduction discharge, so as to affect the normal operation of the electric energy meter or even damage the electric energy meter. In this artificial discharge interference method, the signal frequency generated by the discharge interference is high and irregular, the pulse width is small and the instantaneous voltage is high. Since there is no obvious damage trace, it is usually difficult to find. Moreover, this kind of interference and destruction will cause the electronic devices in the electric energy meter to lose their normal functions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R11/00G01R22/00
Inventor 吕晓军丁养志崔安江
Owner SHENZHEN KAIFA TECH (CHENGDU) CO LTD
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