A method for judging whether the electrostatic sensor works normally

Abstract

A method for judging whether an electrostatic sensor works normally belongs to the field of electrostatic measurement. Install a single-chip microcomputer module in the electrostatic sensor to monitor the working voltage and frequency of the electrostatic sensor in real time, so that the electrostatic sensor can automatically check whether the working voltage is normal or correct, and self-monitor whether the vibration frequency of the vibrating electrode is correct, and automatically correct the vibration frequency Function to maintain the set detection frequency. Ensure that the electrostatic sensor is always in an effective monitoring state, and when it loses its ability to detect static electricity, it will output an alarm immediately. It can be widely used in the design and manufacture fields of electrostatic sensors.

Description

technical field [0001] The invention belongs to the field of electrostatic measurement, in particular to a method for judging whether an electrostatic sensor works normally. Background technique [0002] The electrostatic sensor is a special and precise instrument for monitoring the static electricity on the surface of an object, and plays a very important role in static electricity measurement and protection. On the production line of an electronics factory, electrostatic monitoring of products is an important guarantee to prevent products from electrostatic discharge hazards and ensure product quality. In the environment of flammable and explosive working conditions, electrostatic discharge electrodes are likely to cause combustion and explosion, so the monitoring of static electricity is particularly important and has become a necessary measure for safe production. Therefore, with the development of the industry, the function and performance requirements of electrostatic...

AI Technical Summary

Problems solved by technology

When the external power supply is wrong, such as when the external power supply voltage is greater than or lower than the normal input voltage, there is no alarm output; and when the internal power supply voltage is abnormal due to external input voltage errors or sensor working circuit failures (the internal power supply voltage is greater than or lower than the normal voltage value) ), and no alarm output

[0007] 2. When the working frequency changes, it cannot be automatically calibrated

[0008] 3. When the vibrating electrode or the piezoelectric ceramic vibrating piece is damaged and the vibration cannot be realized, that is, when the detection frequency is zero, there is no alarm output function; at this time, the electrostatic sensor shows zero volt static voltage, which will mislead the monitoring management personnel and cause static electricity. Vulnerabilities in Security Protection

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