Automatic doors are divided into: revolving doors, curved doors, sliding doors, emergency evacuation sliding doors, swing doors, folding doors, fast doors and other types of automatic doors began to be used on buildings, after the twentieth century. In the late 1920s, the opening of American supermarkets, automatic doors began to be used. Later, in 1945, hydraulic and air-type automatic doors were widely introduced to the market, and the main entrance of the new building was also used. By 1962, electrical styles had begun to appear, and with the construction of the city, the field of automatic door technology was increasing every year. At the beginning, it was difficult to control the speed of the motor by supplying power to the building. It was only necessary to control the oil pressure and air pressure, but the energy utilization efficiency was very low. However, with the development of electrical control technology, the electrical control technology is now mature. The electric automatic door that directly controls the motor has gradually become the mainstream. For example: various automatic special doors with identifiable control, such as: induction automatic door (infrared sensing, microwave sensing, touch sensing, foot sensing), automatic card swipe, etc.