Static dynamic potential intelligent test device with real-time testing technique

Abstract

The invention relates to a static dynamic potential intelligent test device with a real-time testing technique. The device comprises a data acquisition module and a personal computer (PC) machine, wherein the data acquisition module comprises an input unit, a multi-way switch, an analog / digital (A / D) converter, a complex programmable logic device (CPLD), an opto-coupler isolation module and a universal serial bus (USB) bridge; the USB bridge transmits a data acquisition command signal of the PC machine to the CPLD; the CPLD transmits the signal to the input unit, the multi-way switch and the A / D converter through the input action of the opto-coupler isolation module; the input unit transmits an acquired static potential signal to the A / D converter through the multi-way switch; and the A / Dconverter transmits a digital signal back to the CPLD through the isolation amplifying action of the opto-coupler isolation module. The static dynamic potential intelligent test device can perform real-time analog monitoring on the dynamic operation process of the whole process in the fields of hazardous article storehouse, gas station, oil tanker, railway, highway transportation and the like, and continuously record and display the size, polarity and dynamic waveform of the static dynamic potential generated in the dynamic operation process of the whole process in real time.

Description

technical field [0001] The invention relates to the technical field of electrostatic testing, in particular to an electrostatic dynamic potential intelligent testing device with real-time testing technology. Background technique [0002] At present, according to the working mode, electrostatic potential testing instruments are divided into contact type and non-contact type; according to the signal characteristics, electrostatic potential can be divided into electrostatic static potential and electrostatic dynamic potential. [0003] The contact type is to make the measured object directly contact with the electrostatic voltmeter, and use the equipotential principle to measure. This type of instrument is only suitable for the measurement of the potential of static conductors, and it is powerless for insulators that are more likely to generate static electricity. Its representative product is the Q-V series electrostatic voltmeter. The non-contact type is not in contact with ...

AI Technical Summary

Problems solved by technology

However, there are still defects in the application of ZPD-1 and EST405 in the operation process of dangerous goods with high potential electrostatic hazards.

For example, during the manual handling of dangerous goods, and during the transportation of railways, highways, ships, etc., due to various vibrations and friction, static electricity is easy to accumulate to a dangerous high level, and there are reports of spontaneous combustion accidents on the way of transportation vehicles. , How high is the static electricity accumulated in the above operation process, what is the polarity, due to the limitation of cost and technical implementation, it is still impossible to realize the real-time monitoring of the whole process; in addition, both ZPD-1 and EST405 are passive real-time measurements on the site. Failure to give advance warning of a hazardous situation

Images