Signal acquisition device capable of adaptively switching wire system

The invention relates to the technical field of detection equipment, in particular to an adaptive switching wire system signal acquisition device, which comprises a plurality of signal acquisition ports, a signal acquisition control circuit, a signal digital conversion circuit, a DCDC isolation power supply and a magnetic isolator, the signal acquisition port comprises a protection circuit, a signal line system switching circuit, a first high-voltage discharge circuit, a second high-voltage discharge circuit, a signal processing circuit, a signal input interface A and a signal input interface B. The signal input interface A is connected with the signal line system switching circuit through the first high-voltage discharge circuit. The signal input interface B is connected with the signal processing circuit through the second high-voltage discharge circuit, the signal processing circuit is connected with the signal acquisition control circuit, the signal acquisition control circuit is connected with the signal