With the progress of science and technology and the development of society, people’s living standards have been greatly improved. All kinds of automatic control systems that are convenient for life have entered people’s lives. The automatic induction door control system with a single chip microcomputer as the core is one of them and plays an important role in people’s daily life. Compared with the traditional manual door, the automatic sensing door can automatically control the opening and closing of the door, and has the advantages of safety, stability and beauty. The automatic sensing door has been widely used in banks, hotels, shopping malls, office buildings and other public places.
This paper is based on the wide application of automatic induction door in daily life. An automatic door control system based on single chip microcomputer is proposed. The system takes AT89C52 single chip microcomputer as the control core, uses two human infrared pyroelectric detectors to detect whether there are people inside and outside, and conducts anti pinch trigger (step motor analog door) on the tube through separated infrared. Step motor is selected to control the opening and closing of the door. The system can automatically detect whether someone is near the door and judge the current state of the door, so as to realize the automatic opening and closing of the door.
The feature of this system is to select a new type of human body detection sensor, which can ensure that the system can work more stably. In addition, the system also uses infrared sensors to detect the current state of the door, so as to achieve intelligent control of the door.
Keywords: automatic door, microcontroller, control, pyroelectric infrared sensor