Liquid intrusion detection device, liquid intrusion detection method and computer system thereof

A computer system, comprising:

• a power switch;
• and
• a liquid intrusion detection device including at least one circuit board;
• a plurality of liquid detection components disposed on the at least one circuit board;
• a multiplexer disposed on the at least one circuit board and having a plurality of output pins respectively connected to the plurality of liquid detection components;
• and
• a computing component disposed on the at least one circuit board and connected to the multiplexer, and configured to switch the multiplexer to output a detection signal to one of the plurality of liquid detection components through one of the plurality of output pins, and output a liquid intrusion notification signal when a response signal of the detection signal meets a preset potential, wherein the liquid intrusion detection device is connected to the power switch, and the computing component outputs the liquid intrusion notification signal to the power switch to turn off the power switch.

A liquid intrusion detection method, comprising:

• providing a liquid intrusion detection device, wherein the liquid intrusion detection device comprises at least one circuit board and a plurality of liquid detection components, a multiplexer and a computing component that are disposed on the at least one circuit board;
• and
• executing with the computing component:
• switching the multiplexer to output a detection signal to one of the plurality of liquid detection components;
• detecting a response signal of the detection signal;
• and
• outputting a liquid intrusion notification signal when a response signal of the detection signal meets a preset potential.