Self-monitoring electrical device and elevator circuit

Abstract

The invention discloses a self-monitoring electrical device, which comprises a shell, first wiring terminals, a tested circuit and a signal processing circuit; the tested circuit is connected betweenthe two first wiring terminals; the signal processing circuit is arranged in the shell and comprises a first CPU and a detection probe connected with the first CPU, the detection probe is used for detecting a detected circuit, and the first CPU is further electrically connected with a first communication unit and / or an alarm. Devices corresponding to the signal processing circuit and the tested circuit are integrated in the shell, and in actual use, only the first wiring terminals need to be connected. A self-monitoring electrical device is used as a link of a circuit. When the circuit in thelink has a potential hidden fault, the detection probe detects the potential hidden fault and informs the first CPU and the first communication unit to inform external equipment or give an alarm, theabnormality can be quickly found, a maintainer directly starts maintenance from the abnormal position, the fault searching procedure is omitted, and people are prevented from being trapped by the potential hidden fault of the elevator in the field of elevators.

Description

technical field [0001] The invention relates to electrical components, in particular to a self-monitoring electrical device. Background technique [0002] The switch can be independently an electrical component. According to functional classification, switches can be divided into detection switches, knob switches, key switches, etc.; according to the on-off device under normal conditions, switches can be divided into normally open switches and normally closed switches. Switches can also be found in electrical components such as relays and contactors; electrical components such as relays and contactors include switches and coils. [0003] In real life, it can be found that after a long period of use, the contact position of the switch will be oxidized, carbon black, etc., and some switches will be deformed, so the switch contact has poor contact, the resistance of the contact position is too large, and it is close to failure. Critical point, causing unstable operation of th...

AI Technical Summary

Problems solved by technology

[0003] In real life, it can be found that after a long period of use, the contact position of the switch will be oxidized, carbon black, etc., and some switches will be deformed, so the switch contact has poor contact, the resistance of the contact position is too large, and it is close to failure. Critical point, causing unstable operation of equipment (short-term failures occur from time to time, and then recover by themselves; manifested as potential / hidden failures)

Faults appear in a catch-and-seek manner, causing circuit faults in a short period of time, and the circuit is restored when maintenance personnel check or prepare to check

If maintenance personnel go to troubleshoot, it will take a lot of time

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