1.The influence of ultrasonic propagation speed on rangingStable and accurate ultrasonic propagation velocity is a necessary condition to ensure measurement accuracy. The propagation speed of a wave depends on the characteristics of the propagation medium. The temperature, pressure, and density of t

With the further development of information technology in the chemical, petroleum and hydropower sectors, ultrasonic transducer sensor are widely used in oil level, water level and other liquid level measurement. Utilizing the characteristics of ultrasonic, we know that it can also be made into an u

The characteristic of this system is to use the single-chip microcomputer to control the transmission of ultrasonic waves and the timing of the round-trip time from the transmission of the ultrasonic waves to the receiving.Among them, only the wiring diagram of the front ranging circuit is drawn. T

In order to facilitate the application and significance of the research topic of the large range ultrasonic ranging system in the following chapters, it is first necessary to understand the research status and development trend of the current automotive ranging sensor technology field. a brief intro