Crankshaft pulse plate defect detection device

The utility model relates to a defect detection device for a crankshaft pulse plate. The defect detection device for the crankshaft pulse plate comprises a sensor, a data acquisition module and a control piece, the sensor is used for being connected to the whole engine, an open hole is formed in the whole engine, and the sensor is used for being arranged corresponding to the open hole and matched with the pulse plate teeth in an induction mode. The data acquisition module is electrically connected with the sensor, and the data acquisition module is used for acquiring detection data of the sensor at a preset frequency. When the pulse plate teeth are deformed, lack of teeth and have interval errors, changes of time interval, amplitude and the like can be reflected on the waveform, so that defect detection of the appearance state of the crankshaft pulse plate can be carried out. The structure is simple, layout is convenient, operation is convenient, defects of the crankshaft pulse plate can be rapidly detected u