Hardware composition and types of ultrasonic sensors 2

3. Control unit: The control unit is the "brain" of the sensor, responsible for controlling the transmitter to generate ultrasonic pulses and calculating the distance based on the reflected waves received by the receiver. Control units typically include microprocessors or microcontrollers that execute corresponding algorithms and processing programs.diode

4. Signal processing circuit: The signal processing circuit is responsible for amplifying, filtering, and converting the received weak electrical signals, so that they can be effectively processed by the control unit. This section often includes components such as amplifiers, filters, and analog-to-digital converters (ADCs).diode

2、 Types of Ultrasonic Sensors

Ultrasonic sensors can be classified into different types based on their working principles and application areas:

1. Single converter sensor: This type of sensor uses the same physical unit as the transmitter and receiver. They work by switching between transmission and reception, suitable for distance measurement and simple object detection.

2. Dual converter sensor: This sensor has two independent physical units, one for emitting ultrasonic waves and the other for receiving. Dual converter sensors can provide more accurate measurements and are suitable for applications that require high-precision detection.diode