Automatic Sensor Doors - Works

Automatic Sensor Doors are one of the best modern inventions. All we have to do is walk up to the door and it opens magically for us. An automatic sensor door is a closing or opening structure that is used to limit access to an entrance hall through the use of automated technology.

The primary purpose of automatic doors is to allow for objects to pass through an area. Though, they are also used to control the physical atmosphere, such as blocking wind from entering the building, or acting as a noise barrier. Some automatic sensor doors have locking mechanisms that automatically open the door when a card is scanned or by scanning a fingerprint. Automatic doors can typically be found in many shopping malls and office buildings.

Types of Sensor

1. Pressure Sensor: Automatic doors that use a pressure sensor have a huge area that is placed in front and behind the building. The huge area acts as a weighing scale. If the weight exceeds the weight boundary that is set, then the door will open. Pressure sensors can also be used as a secondary sensor. If the primary sensor were to fail, then the pressure sensor will activate. If the pressure sensor detects while closing there is some sort of resistance, the door will avoid closing on that object.

2. Infra Red Sensor: Infrared sensors use infrared technology to open automatic doors. The infrared sensors are able to identify a change in temperature. When the sensors detect a temperature that is warmer, representing a human, it will activate the opening and closing mechanism of the door.

3. Motion Detector: This detector does not use any technology in it. These sensors generate vibration of ultrasonic waves or microwave energy to detect an object in the way. Other ways is, the ultrasonic waves and microwaves will bounce off object.

An automatic sensor doors cannot be controlled by the people passing through, because it may injured or harmed if the sensor fails. So to prevent this sensor are installed to detect if there is object in between the doors.