A detection device for broken skin damage of insulated wires inside a building

Abstract

The invention provides a detection device for skin damage of insulated wires in a building, which comprises a thermal stimulation current sensor, a signal detection and amplification circuit, a single chip microcomputer and an alarm circuit connected in sequence. The thermal stimulation current sensor detects the thermal radiation energy of the exposed part of the broken wire in the building and converts it into a corresponding analog electrical signal. The analog electrical signal is amplified and filtered by the signal detection and amplification circuit and converted into a digital signal. The signal is numerically calculated and compared with a preset threshold, and when it is judged that the calculated value of the digital signal is greater than the preset threshold, an alarm signal is output to the alarm circuit to send an alarm message. The implementation of the present invention saves time and effort, and can accurately measure the position of the broken skin of the power transmission wire in the wall.

Description

technical field [0001] The invention relates to the technical field of building detection, in particular to a detection device for skin damage of insulated wires inside a building. Background technique [0002] For the sake of appearance, people usually bury plastic insulated wires in walls for the transmission of electric energy of electrical equipment in various buildings. However, after long-term use of plastic insulated wires, the plastic will age and crack, and the insulation level will be greatly reduced. When the line is overloaded or short-circuited, it is easier to accelerate the damage of the insulation. If there are broken and exposed wires in the building, the exposed parts will be gradually damaged and finally broken under the action of damp and various corrosion on the wall. Moreover, the broken and exposed wires will cause large-scale leakage, endangering personal safety, and may cause fires when the current is high, causing huge economic losses. Therefore, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used detection method is to cut off the power and disconnect all loads, and then use a megohmmeter to measure the insulation resistance between the wire core and the wall to judge the damage of the transmission wire. However, this method is time-consuming and laborious, and it cannot be detected The location of the broken skin of the internal transmission wire

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