Design of automobile anti-collision system by using ultrasonic ranging transducerWith the continuous advancement of automobile technology, especially the development of autonomous driving technology, more and more distance detection equipment will continue to appear. At present, there are four main

Due to the strong directivity of ultrasonic waves, slow energy consumption, and long distances in the medium, ultrasonic waves are often used for distance measurement. For example, ultrasonic rangefinders and level measuring instruments can be realized by ultrasonic waves. Ultrasonic testing is ofte

In fact, in the electromagnetic wave, only the microwave is suitable for the vehicle reversing radar, otherwise the wavelength is longer than the car, and its accuracy cannot guarantee the safety of reversing. Below I will use microwaves to represent electromagnetic waves.The reversing radar has an

Work programIf a piezoelectric ceramic piece with a resonant frequency of 40 kHz in the transmitting sensor is applied (a 40 KHz high-frequency voltage is applied to the double crystal oscillator, the piezoelectric ceramic piece is elongated and shortened according to the polarity of the applied hig

The ultrasonic distance measuring transducer with double crystal oscillator is a bimorph ceramic that is bonded together and has opposite polarization directions.The working principle of the sheet is to apply an alternating electric field of opposite polarity to the upper and lower ceramic sheets in