Device for detecting engine condition based on pure vibration signal and method thereof

The present invention relates to the field of the engine, the engine is directed to a pure state detecting device and a method based on the vibration signal. The apparatus includes a sensor, data acquisition devices, handheld state detecting device and a server; state detecting device and a hand-held data collection devices are integrated into a handheld data logging devices; handheld sensor is connected to data logging devices; handheld data logging devices and server connected. The method comprises the steps of: (1) classification by the engine model, knowledge acquired vibration signal is formed by a hand-held data logging devices; (2) real-time monitoring of the operating state of the engine under test; (3) the historical data is stored on the server analysis, the experience base; (4) detecting the test engine, the library is determined using empirical operating state of the engine. The present invention is low cost device, easy to install, easy disassembly, easy to spread; a variety of fault diagnosis method, has a high success rate is determined; real-time monitoring can be achieved, and the vibration state playback history data.