Stepping motor fault indication circuit

The utility model discloses a stepping motor fault indication circuit, which relates to the technical field of motor detection, and comprises a power supply module used for supplying power; the multi-path power supply isolation sampling module is used for multi-path current sampling and voltage grading output; the signal conditioning module is used for amplifying and filtering; the vibration monitoring module is used for detecting the vibration condition of the stepping motor; the main control module is used for receiving the signal, outputting a pulse modulation signal and an alarm signal and controlling the signal to control the module to work; the bipolar driving module is used for driving a stepping motor to work; and the display module is used for alarm display. The stepping motor fault indication circuit detects and identifies the electric energy input into the stepping motor in a grading manner, judges whether the stepping motor works normally and detects the vibration condition of the stepping motor a