The ultrasonic rangefinder adopts NE555 circuit, two-stage amplifier circuit and level comparison circuit to realize the transmission and reception of ultrasonic waves. The comparator is the core unit of the rangefinder, which realizes the control of the transmitting circuit and the processing of th

Principle of piezoelectric ultrasonic generator　　Piezoelectric ultrasonic generator actually uses the resonance of piezoelectric crystal to work. The internal structure of the ultrasonic generator is shown . It has two piezoelectric wafers and a resonance plate. When a pulse signal is applied to its

Ultrasonic distance measurement module,single-chip microcomputer connected to 12864 LCD, HC-SR04 ultrasonic level sensor mould, the hardware of the ultrasonic proximity sensor module is also not known.

Product Introduction:We want to use the ultrasonic module distance sensoroutdoors for a long time, but the traditional ultrasonic distance measurement sensor is not waterproof, and the outdoor weather often encounters rain, which leads to the situation that some scenes cannot be used in rainy days.

Ultrasonic distance measuring circuit diagram: Type 4Y2 distance measuring alarm control special integrated circuit, which can be used to assemble distance measuring alarm control electronic products. It uses the principle of ultrasonic distance measurement to detect obstacles in front of the ultras