Communication signal short circuit detection method, circuit, equipment and system

The invention relates to the technical field of serial communication, and provides a communication signal short circuit detection method, circuit, device and system, and the communication signal short circuit detection method comprises the steps: carrying out the short circuit detection of a transmitting end and a receiving end during the information transmission; if the sending end and the receiving end of the communication equipment are short-circuited, the effective short circuit of the sending end and the receiving end can be identified by detecting whether the information of the receiving end and the sending end of the communication equipment is consistent or not. The communication signal short circuit detection method is simple and can be achieved only through a digital control circuit, an additional analog circuit for detecting physical voltage or current does not need to be added, the design of communication signal short circuit detection is simplified while the detection reliability is guaranteed, an