Fault monitoring system of brake shoe detection equipment

The application provides a fault monitoring system of brake shoe detection equipment, which comprises a total current acquisition device and a comparable judgment device, wherein the total current acquisition device can obtain a working current of the brake shoe detection equipment and take the current as the total current value; and then the comparable judgment device will compare the total current value with a preset total current threshold value, judges a fault in the brake shoe detection equipment when the total current value exceeds the total current threshold value and then outputs a fault signal. The working current of the brake shoe detection system is fixed during normal working, so that a monitoring worker can timely find the fault according to the fault signal because changing of the current is monitored and the fault signal is output when the working current exceeds a normal value, namely the working current threshold value.