A compound of the ultrasonic sensor is flexibly vibrators fixed to the base

The ultrasonic sensor is a composite vibrator be flexibly fixed on the base . The compound of the resonator and the vibrator consists of a metal plate and a piezoelectric ceramic bimorph element consisting of a combination of the vibrator . Resonator flared aims to effectively radiate ultrasonic waves generated due to vibration , and the ultrasonic waves can be effectively central portion of the vibrator .Piezoelectric ceramic ultrasonic Camshaft Position Sensor uses a point to note is that in the high- frequency probe , you must use the vertical thickness vibration mode piezoelectric ceramic . In this case , the acoustic impedance of piezoelectric ceramic matches with the air becomes very important . Because the acoustic impedance of the piezoelectric ceramic 105 acoustic impedance of air , which will cause the vibration of the piezoelectric ceramic significant loss of radiation on the surface , then you will need to adhere to a special material on the piezoelectric ceramic ultrasonic Automotive Temperature Sensors , as acoustic matching layer , the air can be realized with acoustic impedance matched , so as to achieve the purpose of the measurement .