Fault diagnosis method and device for flame-proof type switch

Abstract

The invention discloses a fault diagnosis method and device for a flame-proof type switch. By means of the fault diagnosis method, the switch component faults can be monitored, analyzed and confirmed automatically. The switch fault diagnosis method comprises the following steps: a. summarizing fault judgment conditions of the switch component according to the functions and fault phenomena of the switch component, b. storing the fault judgment conditions into an intelligent diagnotor through a program, c. reading and delivering various parameter states of the component through a sampling and feedback circuit, d. receiving a detection signal through the intelligent diagnotor, comparing the detection signal with the fault judgment conditions, confirming that that the component breaks down if the detection signal meets the fault judgment conditions, e. sending a fault signal to the switch through the intelligent diagnotor and storing the faults and time for further search, and f. reporting the faults in texts or patterns and icons through a displayer. The fault diagnosis device comprises the intelligent diagnotor, the sampling and feedback circuit and the displayer, the intelligent diagnotor is the core component and belongs to an intelligent component such as microcomputers, single-chip microcomputers and PLCs.

Description

Technical field [0001] The invention relates to the fault diagnosis of electrical switches, and in particular provides a method and device for fault diagnosis of explosion-proof switches for mines. technical background [0002] Coal mine flameproof switch, also known as flameproof vacuum electromagnetic starter. It may malfunction at any time during underground operation. Due to the special underground environment of coal mines, its maintenance speed is very important. Due to the maintenance method and the explosion-proof switch itself, there are certain defects in the maintenance of the switch. The problems are as follows : [0003] The space of the switch explosion-proof cavity is narrow and the components are crowded. Moreover, the switchboard for the upper part of the switch is embedded vertically in the explosion-proof cavity with bolts. The components are placed on the front and back of the switchboard, which makes measurement and inspection difficult and inconvenient. [000...

AI Technical Summary

Problems solved by technology

[0006] Due to the above reasons, the maintenance work efficiency is low and the time is long. Is there an intuitive and effective diagnostic method for the maintenance of flameproof switches? Can we automatically diagnose component and line faults through a method and device, and The specific location of the fault is determined within a small range and intuitively reflected to the staff, which will greatly improve production efficiency and save manpower and material resources

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