Wireless direct-current high-voltage digital microammeter

Abstract

The invention discloses a wireless direct-current high-voltage digital microammeter, which comprises a current and voltage conversion module, a low pass filter, an analog-to-digital conversion module, a single-chip digital signal processing module, a liquid crystal display and a 433-MHz wireless data transmission module, wherein the current and voltage conversion module is used for converting an input current signal into a voltage signal, the low pass filter is electrically connected with the input end of the current and voltage conversion module and used for removing noise, the analog-to-digital conversion module is connected with the output end of the filter and used for converting analog into digital, the single-chip digital signal processing module is electrically connected with the output end of the analog-to-digital conversion module and used for processing a digital signal output by the analog-to-digital conversion module, the liquid crystal display is electrically connected with the single-chip digital signal processing module and used for displaying a current value in real time, and the 433-MHz wireless data transmission module is electrically connected with the single-chip digital signal processing module. By utilizing a 433-MHz wireless communication frequency and advanced power management algorithm, the microammeter has long continuous working time and is high in intelligence, stability and usability.

Description

technical field [0001] The invention relates to a microammeter, in particular to a wireless high-voltage digital microammeter with high intelligence, high stability and high usability, and belongs to the technical field of electrical testing instruments. Background technique [0002] The microammeter on the high voltage side in the prior art mainly adopts the following communication methods: [0003] 1. Set the current measurement value display screen at one end of the measured object, and the operator observes the displayed value through the telescope. Since the operator needs to adjust the working state of the measured object or the measuring device according to the observed value at the same time, this operation method is undoubtedly limited. Reduced the difficulty of the operator's work; [0004] 2. Convert the collected signal into an optical signal and use optical fiber communication; [0005] 3. Infrared transmission is used, but because sunlight contains infrared c...

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Problems solved by technology

[0005] 3. Infrared transmission is used, but because sunlight contains infrared components, when this method is used outdoors, it is easy to be affected by the light pollution of sunlight to affect the transmission quality;

[0006] The above-mentioned methods cannot meet the existing requirements of high intelligence, high stability and high usability in terms of measurement stability and ease of use.

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