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Do you know the automatic door?

Automatic doors are divided into: revolving doors, curved doors, translational doors, emergency evacuation of the translation doors, flat doors, folding doors, quick doors and other categories of automatic doors began to use in the building, is in 20th century years later. In the late 20, the opening of American supermarkets, automatic doors began to be used. Since then, in 1945, oil-hydraulic, air-type automatic doors have been widely marketed, the main entrance of the new building has also begun to use. By the year 1962, the electrical type has begun to appear, followed by the construction of the city, the field of automatic door technology is increasing every year. At first, with the supply of buildings with power supply for the speed control of the motor is difficult, had to carry out oil pressure, air pressure speed control, conversion but because of energy efficiency is very low, but with the development of electrical control technology, now the electrical control technology has matured, direct control electric motor automatic door gradually become the mainstream.

For example: A variety of automatic special doors can be recognized control, such as: Induction Automatic door (infrared induction, microwave induction, touch sensing, foot-sensing), automatic door swipe.

Using foot pedal, photoelectric beam and other functions to power, air pressure or hydraulic power automatically open door door system. In 1th century A.D., the installation of the automatic opening of the temple doors by the Greeks, Hiro, was the first automatic door to be powered by air pressure and hydraulics.