Understanding the Principle of Automatic Door Sensors
Automatic door sensor is a common device used for controlling automatic doors. It can detect objects in the doorway and control the opening and closing of the door. Its main principle is to use sensing technologies such as infrared or ultrasonic waves to monitor the objects in the doorway in real-time to achieve smart control of automatic doors.
Generally speaking, there are two principles for automatic door sensors: infrared principle and ultrasonic principle. Among them, the infrared principle is the most common.
The working principle of an infrared sensor is to emit an infrared beam through an infrared emitter and receive the reflected infrared signal through a receiver. When an object passes through the doorway, it reflects some of the infrared light, and the infrared receiver in the sensor can detect this signal and trigger the internal circuit of the sensor to control the opening and closing of the automatic door.
The working principle of an ultrasonic sensor is to emit ultrasonic waves through a sensor and receive the reflected ultrasonic signal when an object passes through the doorway. The ultrasonic receiver in the sensor can detect this signal and trigger the internal circuit of the sensor to control the opening and closing of the automatic door.
Regardless of the principle used, the sensitivity of the automatic door sensor is essential. Generally, the higher the sensitivity of the sensor, the smaller the objects it can detect, and vice versa. Therefore, users need to adjust the sensitivity of the automatic door sensor reasonably according to their actual situation to achieve the best performance.
In summary, the principle of automatic door sensors is mainly based on sensing technologies such as infrared or ultrasonic waves to detect objects in the doorway and achieve smart control of automatic doors. At the same time, users can choose different types of sensors according to different needs and adjust the sensitivity of the sensor reasonably to achieve the best performance.
