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Working principle of automatic door

Date:Sep 22, 2020

Working principle of automatic door

 

The basic composition of the automatic door is roughly the same. With the above composition, plus the door opening signal, it can be configured into a simple automatic door system, which is a control unit that can recognize the movement of people approaching the door as the door opening signal. The system opens the door, automatically closes the door after the person leaves, and controls the opening and closing process. Under normal circumstances, the working principles of different types of automatic doors are somewhat different, as follows.

The working principle of the sensor:

When the automatic door sensor detects someone entering, it sends a pulse signal to the main controller. After the main controller judges, it notifies the motor to run and monitors the number of motor revolutions to notify the motor to increase force and enter slow running at a certain time. After the motor gets a certain running current, it runs in the forward direction, and transmits the power to the timing belt, and then the timing belt transmits the power to the spreader system to open the door leaf; after the door leaf is opened, the controller makes a judgment. If the door needs to be closed, the motor is notified to reverse Move towards, close the door leaf.

Principle of automatic translation door:

When the inductive detector detects someone entering, it transmits a pulse signal to the main controller. After the main controller judges, it notifies the motor to run, and at the same time monitors the number of motor revolutions to notify the motor to increase force and enter slow running at a certain time. After the motor gets a certain running current, it runs in the forward direction, and transmits the power to the timing belt, and then the timing belt transmits the power to the spreader system to open the door leaf; after the door leaf is opened, the controller makes a judgment. If the door needs to be closed, the motor is notified to reverse Move towards, close the door leaf.

Principle of infrared automatic door:

Generally, the human body has a constant body temperature, usually at 37 degrees, so it emits infrared light with a specific wavelength of about 10um. The infrared automatic door uses the principle of infrared reflection. There is a transmitter module and a receiver module in the circuit. The transmitter module can emit a certain frequency and Infrared light of a certain power, when encountering obstacles, is reflected back, received by the receiving module, and processed by the circuit or single-chip microcomputer to perform corresponding functions.


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