Research Progress of Mechanical Vibration Sensors

Mechanical vibration is a very common phenomenon in industrial production, and also an important cause of mechanical equipment failure. Monitoring mechanical vibration signal can know the operation status of mechanical equipment, so as to effectively prevent mechanical failure and sudden accidents. Therefore, the acquisition of vibration signal becomes a necessary link in the condition monitoring of mechanical equipment.Mechanical vibration test mainly relies on a variety of vibration sensors, including acceleration sensor and strain sensor. Both of them are widely used and they can accurately collect vibration signals during the operation of mechanical equipment. At present, the research on vibration sensor mainly focuses on the development of materials, the optimization of sensor performance and the introduction of new technology.Vibration sensors are summarized in this paper, which are divided into acceleration sensors and strain sensors. The former includes piezoelectric acceleration sensors and capacitive acceleration sensors, while the latter includes resistance sensors and fiber Bragg grating strain sensors. Finally, the characteristics of self powered vibration sensors, RFID vibration sensors and other new sensors are discussed, and the research status and development trend of vibration sensors are discussed.