Ultrasonic sensor is a type of sensor that uses ultrasonic waves for distance measurement, detection, and probing. It uses the time difference between the propagation of ultrasound in a medium and the echo to measure distance or detect the position of an object. Ultrasonic sensors are commonly used in industrial automation, robotics, automotive and other fields.

The working principle of ultrasonic sensors is based on the time difference measurement of the propagation and echo of ultrasonic waves in air, liquid, or solid. The working principle of ultrasonic sensors is as follows:

Emission: The sensor emits ultrasonic pulse signals.

Propagation: Ultrasonic waves propagate in a medium, usually through air.

Reception: When ultrasound encounters obstacles, a portion of the beam is reflected back to the sensor by the object.

Time difference measurement: Sensors measure the time difference between transmission and reception.

Distance calculation: Based on the speed of sound and time difference, the sensor calculates the distance between the object and the sensor.

The main performance indicators of ultrasonic sensors include:

Ranging range: The maximum and minimum distance that the sensor can measure.

Resolution: The minimum distance difference that a sensor can distinguish.

Accuracy: The error between the sensor measurement result and the actual value.

Reflection area: The size of the target reflection area that the sensor can perceive.

Working frequency: The frequency used by the ultrasonic sensor.

Response time: The time required for the sensor to send a signal, receive an echo, and calculate the measurement result.

Environmental adaptability: The stability and reliability of sensors under different environmental conditions.

Interface and output: Communication interface and output format between sensors and other devices.

These performance indicators determine the application range and reliability of ultrasonic sensors, and it is very important to choose the appropriate ultrasonic sensor according to specific application requirements.