automatic door structures
which parts will be included in the whole set of automatic door system?
Hotels and restaurants have an automatic door, when someone approached, the door will
automatically open and close. one student has had a strong interest, would
like to know is how to achieve automatic automatic door control. He repeated this experiment
several times: when he gently close the door automatically when the doors open
automatically; When a football rolls automatic door, the door opens automatically; When the
bottom side with a large ball of colorless and transparent glass, upright sliding automatic
doors, the door does not open.
Automatic sensor door structures
1st, Many different types of automatic sensors door, here, only take the sliding automatic sensor door
as an example to introduce machine components:
(1) Main controller: it is the automatic doors of the command center, encoded with instructions
through the internal procedures of the large blocks, to issue the corresponding command, the
command motor or electric locks the system work; same time, people adjust the doors open
through the controller speed , open rate and other parameters.
(2) sensor detector: Responsible for acquisition of external signals, as people's eyes, when
there are moving objects into the scope of its work, it a pulse signal to the main
(3) Power motor: to provide open and close the active force, acceleration and deceleration
(4) Tracks: the tracks as the train, bound to go round the doors of the spreader
system, making it a specific direction.
(5) Door spreader wheel system: activities for hanging doors, driving while under the
door traction power to run.
(6) Timing belt (some manufacturers use the V-belt): used to transmit power produced by the
motor, take the wheel traction door spreader system.
(7) lower part of the guidance system: the lower door guide and positioning device, to
prevent the door in the front door when run swing.
(8) automatic door sensor door with sensors that control the automatic doors open off a
series of components together; also known as automatic door sensor door unit or units;
induction door components generally include: motor, control device, pulleys, belts.
2nd, The principle of self-control automatic door sensors
The principle of self-control automatic doors made the following conjecture, do you think
the most reasonable guess is 
A. Automatic door "listen" when the voice coming through the voice-activated device for
automatic opening and closing
B. Automatic door to detect objects near the infrared emitted by the light control device
for automatic opening and closing
C. Automatic door itself can emit an infrared signal, when such signals are close to the
objects reflect, it will automatically open and close
D. Objects through the air near the door can produce a pressure to pass automatic doors,
automatic opening and closing
3rd, Automatic door sensor works as follows:
Sensitive detectors to detect when people enter, the collected signal sensing detector to
generate the pulse signal, then the pulse signals to the master, master after the judge
informed the motor running, while monitoring the motor revolutions, in order to inform the
motor in a certain when the afterburner and run into the slow. After the motor running
current to do certain forward run, the torque to the belt, then the torque to the spreader
belt system so that doors open; doors open by the controller post-judgment, for closed,
notify the motor for the anti- to the movement to close the doors.
4th, Automatic door sensors Caution:
Clean the inside of the chassis of oil, dust, automatic door sensors check the wear of the
parts, check the automatic doors of the branch position deviation and screw tightness checks
belt tension controller checks the output of the motor, door width, speed, braking, etc.
Check the voltage parameters are normal maintenance, replacement of defective parts need to
pay attention to the owners of the regular maintenance of automatic doors and maintenance of
automatic doors due to installation quality and use of environmental impact, using the
process will inevitably be a problem. If long-term lack of maintenance, leading to automatic
doors with the pitfalls and glitches are not in time, will become a major failure by the
glitch, could eventually lead to paralysis of automatic doors.
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