Ultrasonic proximity sensors use reflected or transmitted ultrasonic waves to detect the presence or absence of a target component. The output is boolean, that is, the sensor merely detects whether the target is or is not within the detection range. Ultrasound motion sensor with 3 Pins .VCC,GND and Output. The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. It offers excellent range accuracy and stable readings in an easy-to-use package. It operation is not affected by sunlight or black material like Sharp rangefinders are (although acoustically soft materials like cloth can be difficult to detect).Ultrasonic Ranging Module HC-SR04 provides 2cm-300cm non-contact distance sensing capabilities,Ranging accuracy up to 3mm; module comprises an ultrasonic transmitter, a receiver and a control circuit. UHZ series thru-beam ultrasonic sensors use sound wave technology and are specifically designed for applications with limited mounting space. Thru-beam pair sensors are often the most accurate and reliable sensor configurations.
|Ultrasonic sensors are ideal for applications in which the sensed object is made of clear, transparent or varying surface color materials. You can standardize on one sensor for many materials, without any extra setup or sensing concerns.
Flowline ultrasonic liquid level sensors replace float, conductance and pressure sensors and are available with single and multi-function capabilities including continuous level measurement, switching and control.
- IO port TRIG trigger ranging to at least 10us high level signal;
- the module automatically sends eight 40khz square wave, automatically detects whether a signal return;
- a signal to return to a high output through the IO port ECHO high duration of ultrasound wave from the transmitter to the time of the return. Test distance = (high level time * sound velocity (340M / S)) / 2;