Piezo Disc
8x2mm 1mhz for sale
piezo disc application:
Reversing sensor
The piezoelectric ceramic transducer sends out a short-wave pulse, which is received by the same transducer after being reflected by the obstacle, and the distance to the obstacle can be calculated by testing the time of the back-and-forth pulse. This kind of device is widely used in trucks to facilitate the driver to accurately locate the loading ramp when reversing, and can also be used as a reversing auxiliary device for passenger cars.
Level sensor-immersion transducer test method
The level sensor can be divided into two types according to the test principle, one of which is the time when the ultrasonic signal is sent through the test and received after being reflected. Another type of piezoelectric ceramic transducer is the immersed piezoelectric ceramic transducer. Since the metal tuning fork will generate self-resonant frequency under the action of the piezoelectric ceramic plate, the test is carried out, and the self-resonant frequency of the metal tuning fork is also Related to surrounding media. For example, when the tuning fork is immersed in liquid or powder, the frequency of the system will change, and this change will be monitored by the system, but the disadvantage of this method is that it cannot be simulated. This kind of sensor can only indicate whether it is above or below a certain level. In order to test more accurately, it is usually recommended to place several level sensors in a container for simultaneous testing. The advantage of this method is that it can effectively and reliably test the existing substances.
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