On-off detection device for aviation plug cable

The utility model discloses an aviation plug cable on-off detection device, which comprises a test voltage source, an analog switch circuit, an A/D conversion circuit, a microcontroller, an upper computer and a power supply circuit, and is characterized in that the aviation plug cable comprises a plurality of cables, the analog switch circuit comprises a multi-way switch, and the test voltage source is connected with the cable end of the aviation plug cable; the analog switch circuit is connected with the aviation plug end of the aviation plug cable; the input end of the A/D conversion circuit is connected with the output end of the analog switch circuit; the input end of the microcontroller is connected with the output end of the A/D conversion circuit; the upper computer is connected with the output end of the microcontroller; and the power supply circuit is connected with the microcontroller. According to the utility model, the test voltage source, the analog switch circuit, the A/D conversion circuit, the