Electromagnetic interference detection method and system, and electromagnetic interference detector

Abstract

The present invention discloses an electromagnetic interference method and system, and an electromagnetic interference detector. The method comprises the following steps of: remotely collecting optical pulse signals of a tested terminal located in a strong electromagnetic field environment in real time; transmitting the collected optical pulse signals to a non-magnetic field environment by opticalfibers to perform photovoltaic conversion to obtain corresponding electrical signals; determining whether the optical pulse signals are influenced by electromagnetic interference or not according tothe pulse interval of the electrical signals and the mutations in the non-magnetic field environment to determine whether the tested terminal is influenced by the electromagnetic interference or not.Through adoption of the optical fiber communication, the detection device cannot be interfered by the electromagnetic field so as to improve the reliability of a detection result; the electromagneticinterference method and system, and the electromagnetic interference detector can automatically perform statistic analysis for the optical pulse signals so as to avoid the trouble of artificial statistics and improve the data statistics and analysis efficiency; and moreover, the volume is relatively small, the weight in light, the carrying is convenient, and the electromagnetic interference methodand system, and the electromagnetic interference detector are suitable for the optical pulses of visible light with different wavelengths and can be applied to detection occasions.

Description

technical field [0001] The invention relates to electromagnetic anti-interference detection technology, in particular to an electromagnetic interference detection method, system and electromagnetic interference detector. Background technique [0002] At present, when the meter is certified and the organization tests the accuracy of the meter, because the meter itself is in the source of interference, the testing equipment has to be in the same source of interference as the meter, but the testing equipment itself often does not have the function of anti-magnetic field interference. , so the strong magnetic field environment will affect the detection sensitivity of the detection equipment, which will lead to errors in the detection results of the detection equipment; moreover, most of the interference sources are strong magnetic fields, which will also cause physical damage to the detection personnel. [0003] In addition, testers or analysts must stand in the test environment...

AI Technical Summary

Problems solved by technology

[0002] At present, when the meter is certified and the organization tests the accuracy of the meter, because the meter itself is in the source of interference, the testing equipment has to be in the same source of interference as the meter, but the testing equipment itself often does not have the function of anti-magnetic field interference. , so the strong magnetic field environment will affect the detection sensitivity of the detection equipment, which will lead to errors in the detection results of the detection equipment; moreover, most of the interference sources are strong magnetic fields, which will also bring physical damage to the detection personnel

[0003] In addition, testers or analysts must stand in the test environment to visually identify the light pulses generated by the electric meter in the experiment and analyze the problem. For special requirements with relatively large pulse constants, testers cannot visually identify the accuracy of the pulses. Perform pulse counting, compare the number of pulses in the interference experiment and the total number of pulses in the non-interference experiment, and judge the measurement accuracy of the meter in the interference environment. The existing optical pulse counter can only count the number of pulses; it cannot generate real-time data for the meter. The optical pulse is analyzed, and the historical data cannot be saved, and the experimental data cannot be traced

[0004] To sum up, the existing test equipment is generally expensive, inconvenient to carry, and cannot analyze and save the light pulse, and the experimental data cannot be traced back. At present, there is no simple structure, portability, safe and reliable performance, and data statistics in the industry. Anti-electromagnetic interference electric meter optical pulse detection equipment

Images