What types of sensors are commonly used in automatic door open sensors?
Automatic door open sensors are a convenient and useful feature in modern buildings, allowing doors to open automatically as people approach them. These sensors use different types of technology to detect movement and activate the door-opening mechanism. In this article, we will explore the types of sensors commonly used in automatic door open sensors.
1.Infrared Sensors
Infrared sensors use an infrared beam to detect movement. When a person moves within the range of the sensor, the infrared beam is interrupted, triggering the door to open. Infrared sensors are commonly used in automatic sliding doors and have a range of up to 12 feet.
2. Microwave Sensors
Microwave sensors emit microwaves and measure the reflection of those waves to detect movement. When a person moves within the range of the sensor, the microwaves bounce off their body and trigger the door to open. Microwave sensors are commonly used in automatic swing doors and have a range of up to 25 feet.
3. Ultrasonic Sensors
Ultrasonic sensors emit high-frequency sound waves that bounce off objects and return to the sensor. When a person moves within the range of the sensor, the sound waves bounce off their body and trigger the door to open. Ultrasonic sensors are commonly used in automatic sliding doors and have a range of up to 8 feet.
4. Motion Sensors
Motion sensors use a combination of infrared and microwave technology to detect movement. When a person moves within the range of the sensor, the infrared and microwave sensors work together to trigger the door to open. Motion sensors are commonly used in automatic sliding doors and have a range of up to 20 feet.
5. Pressure Sensors
Pressure sensors are installed under the floor and detect pressure changes when someone steps on them. When pressure is detected, the door-opening mechanism is triggered, and the door opens. Pressure sensors are commonly used in automatic swing doors.
6. Optical Sensors
Optical sensors use a beam of light to detect movement. When a person moves within the range of the sensor, the beam of light is interrupted, triggering the door to open. Optical sensors are commonly used in automatic sliding doors and have a range of up to 10 feet.
In conclusion, automatic door open sensors use a variety of technologies to detect movement and activate the door-opening mechanism. Infrared, microwave, ultrasonic, motion, pressure, and optical sensors are commonly used in automatic door open sensors, depending on the type of door and the range of detection required. These sensors make it convenient for people to enter and exit buildings and improve accessibility for individuals with disabilities.
