Hc sr04 working principle pdf

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Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact ultrasonic transmitters, receiver and control circuit. The basic principle of work:. Ultrasonic sensors work by emitting sound waves at a frequency which is too high for humans to hear. An above image shows the HC-SR-04 ultrasonic sensor which The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work: (1) Using IO trigger for at least 10us high level Figure-1 show the working principal of ultrasonic ranging concept. Figure-1. HC-SR04 Ultrasonic Sensor is a very affordable proximity/distance sensor thatHC-SR04 User Guide. The transmitter emits a 8 bursts of an directional 40KHz ultrasonic wave when triggered and starts a timer. Ultrasonic pulses travel The principle of ultrasonic distance measurement used the already-known air spreading velocity, measuring the time from launch to reflection when it.