The working principle of automatic door reveals why the door opens by itself.

In our daily life, the use of automatic doors is a very common thing, which can be seen in some public places, such as hotels, airports, shopping malls, restaurants and so on. The use of automatic doors gives people a sense of fashion and technology, and some people even install them at home. What is the working principle of automatic doors? Bian Xiao takes you to explore:

Basic working principle of automatic door:

The basic components of automatic doors are basically the same. Using the above structure and door opening signal, a simple automatic door system can be configured, that is, a control unit that can recognize the action of people approaching the door as the door opening signal, open the door through the driving system, automatically close the door after people leave, and control the opening and closing process. The system configuration of automatic door refers to the peripheral auxiliary control devices connected with the automatic door controller according to the use requirements, such as door opening signal source, access control system, safety device, centralized control, etc. Auxiliary control devices must be reasonably equipped according to the use characteristics of buildings, personnel composition and system requirements of building automation.

Working principle of automatic door sensor;

When the automatic door sensor detects someone entering, it sends a pulse signal to the main controller, and the main controller informs the motor to run after judgment, and at the same time monitors the number of revolutions of the motor to inform the motor to apply force at a certain time and enter a slow running. After the motor gets a certain running current, it runs forward to transmit power to the synchronous belt, and then the synchronous belt transmits power to the spreader system to open the door leaf; After the door leaf is opened, the controller will make a judgment. If it is necessary to close the door, the motor will be informed to move in the opposite direction to close the door leaf.

Principle of translating automatic door;

When the induction detector detects someone entering, it sends a pulse signal to the main controller, and the main controller informs the motor to run after judgment, and at the same time monitors the number of revolutions of the motor to inform the motor to apply force at a certain time and enter a slow running. After the motor gets a certain running current, it runs forward to transmit power to the synchronous belt, and then the synchronous belt transmits power to the spreader system to open the door leaf; After the door leaf is opened, the controller will make a judgment. If it is necessary to close the door, the motor will be informed to move in the opposite direction to close the door leaf.

Principle of infrared automatic door:

Generally, the body temperature is constant, generally at 37 degrees, so it will emit infrared rays with a specific wavelength of about 10UM. The infrared automatic door is based on the principle of infrared reflection. There are a transmitting module and a receiving module in the circuit. The emitting module can emit infrared rays with a certain frequency and power. When encountering obstacles, it will be reflected back, received by the receiving module, processed by the circuit or single chip microcomputer, and perform corresponding functions.

The use of automatic doors makes people feel more convenient, so some enthusiasts choose to install them on the balcony and other places at home, which makes it easier to get in and out. The working principle of automatic door is introduced to everyone. I believe that everyone now knows what it feels like to open the door.