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Electric gates are recommended to be used in combination with other security features to install a full security system. A few of these features are closed circuits with security cameras , additional gates in conjunction with the main gate, electronic keycards and keypads, security guards .
The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.
Automatic Systems, a subsidiary of Bolloré Group, is a company, specialising in the automation of secure entrance control. [ 1 ] [ 2 ] The company designs and manufactures vehicle, pedestrian and passenger access control equipment.
The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market. [5] With the invention of the Gunn diode, microwave motion detectors became common in automatic doors in the 1970s. [6] [7] In 1980, the first automatic door using an infrared sensor was ...
Locking is provided by a key lock in the centre of the door moving two square sliding lock bars in and out of holes in the door tracks, locking and unlocking it, or by the solenoid lock in the automatic motor. Newer homes feature more American styled tilting panel lift doors which slide up onto a track on the ceiling via a motor and chain drive.
The operator is placed in the space above the sliding door. An electric motor, geared down to get a lower speed and a higher torque, drives a pulley at one end of a belt. The door is clamped to the belt. To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door.
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