Principle of ultrasonic transducer
The transmission and reception of ultrasonic waves requires an energy conversion device between electro-acoustics, which is a transducer. The so-called ultrasonic transducer generally refers to an electro-acoustic transducer, which is a device or device that can convert electrical energy into mechanical energy. When the transducer is in the emitting state, it converts electrical energy into mechanical energy. Ultrasonic transducers usually have an electrical energy storage element and a mechanical vibration system.
The ultrasonic transducer is an ultrasonic frequency electronic oscillator. When the ultrasonic frequency voltage generated by the oscillator is applied to the piezoelectric crystal of the ultrasonic transducer, the piezoelectric crystal component produces longitudinal movement under the action of an electric field. When a pulse signal is applied to the two electrodes of the ultrasonic transducer, the piezoelectric wafer will vibrate and push the surrounding medium to vibrate, thereby generating ultrasonic waves.
Measures when there is a problem with the ultrasonic transducer
1. When the ultrasonic transducer is damp, you can check the plug connected to the transducer with a megohmmeter, and check the insulation resistance value to judge the basic situation.
2. The ultrasonic transducer ignites and the ceramic material is broken. It can be checked with the naked eye and a megohmmeter. Generally, as an emergency measure, individual damaged vibrators can be disconnected without affecting the normal use of other vibrators.
3. The stainless steel vibrating surface is perforated. Generally, the perforation of the vibrating surface may occur after 10 years of full-load use of the ultrasonic transducer.