Electrical equipment abnormal signal capturing device

Abstract

The invention provides an electrical equipment abnormal signal capturing device which comprises a single-chip microcomputer, a storage module, an AD conversion module and a digital I / O module; the AD conversion module being used for collecting and processing an input voltage signal, a current signal, a frequency signal and a temperature signal; the digital I / O module being used for processing digital control signal acquisition; a voltage transformation transformer; the AD conversion module and the input voltage being isolated by the transformation mutual inductor; a linear optocoupler; the linear optocoupler being provided with three interfaces which are respectively connected with an input current, a frequency signal and a temperature signal; the AD conversion module being isolated from input current, frequency signals and temperature signals through the linear optocouplers; a relay; the digital I / O module and the digital control signal being isolated by the relay; input equipment, connected with the single chip microcomputer system and used for inputting data; and a display screen connected with the single chip microcomputer and used for displaying a system interface.

Description

technical field [0001] The invention relates to a device for capturing abnormal signals of electrical equipment. Background technique [0002] At present, the use of industrial electrical equipment in production enterprises is becoming more and more complicated, and there is a certain difficulty in maintenance. For example, water pump frequency conversion cabinets, belt machine control cabinets, etc. will occasionally trip out of the line due to device failure or poor line contact, but they can be restored immediately after tripping. , because the signal at the moment of tripping is fleeting, and there is chance when the problem recurs, it is difficult for electrical maintenance personnel to find the fault point, so there is a risk of repeated tripping, and the loss is heavy. Contents of the invention [0003] The object of the present invention is to overcome the above defects and provide a device for capturing abnormal signals of electrical equipment. [0004] The prese...

AI Technical Summary

Problems solved by technology

[0002] At present, the use of industrial electrical equipment in production enterprises is becoming more and more complex, and maintenance is difficult. For example, water pump frequency conversion cabinets, belt machine control cabinets, etc. will occasionally trip out of the line due to device failure or poor line contact, but they can be restored immediately after tripping. , because the signal at the moment of tripping is fleeting, and there is chance when the problem recurs, it is difficult for electrical maintenance personnel to find the fault point, so there is a risk of repeated tripping, and the loss is heavy

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