System of making an uproar that goes that can be used to automobile engine failure recognition

The utility model discloses a system of making an uproar that goes that can be used to automobile engine failure recognition, including central sound sensor unit, sound sensor unit, microprocessor, phase inverter and signal vector superposition unit all around, wherein: center sound sensor unit is for installing in three superimposed sound sensor at engine center, to remembering in proper order down for first sound sensor, second sound sensor, third sound sensor on the follow, sound sensor unit is for installing four sound sensors on the engine all around, sound sensor unit's output connected microprocessor all around, phase inverter, third sound sensor are connected respectively to microprocessor's first output and second output, and first sound sensor is connected to the output of phase inverter, signal vector stack module is connected to center sound sensor unit's output. The utility model discloses a double with noise cancellation and with desired signal to show the SNR that improves desired signal. 本实用新型