Automatic door control system

A technology for automatic doors and main controllers, applied in electrical program control, program control in sequence/logic controllers, door/window accessories, etc., can solve the problems of single types of automatic door controllers and few researches

Inactive Publication Date: 2014-01-01
米振宇
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The core part of the automatic door system is the controller, which is crucial to the operation of the sys

Method used

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Embodiment Construction

[0021] The technical scheme of the present invention will be further described and described in detail below in conjunction with the accompanying drawings.

[0022] The scanning working method of PLC is obviously different from the working principle of electrical control. The electrical control device adopts the hard logic parallel working mode. If the coil of a certain relay is energized or de-energized, all the normally open and normally closed contacts of the relay will act immediately and simultaneously no matter where they are in the control circuit; and PLC adopts scanning mode (serial mode of operation), if the coil of a certain soft relay is turned on or off, all its contacts will not act immediately, and will not act until it is scanned. However, due to the fast scanning speed of the PLC, there is usually no difference in the I / O processing results between the PLC and the electrical control device.

[0023] When the PLC is running, it completes the control task by ex...

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Abstract

The invention discloses an automatic door control system which comprises a PLC main controller, a periphery circuit, an infrared detector, a door operation position detection and alarm circuit, a stepping motor controller, a control mode switching circuit and an automatic door protection circuit, wherein the periphery circuit, the infrared detector, the door operation position detection and alarm circuit, the stepping motor controller, the control mode switching circuit and the automatic door protection circuit are arranged on the PLC main controller. According to the automatic door control system, a programmable logic controller (PLC) is adopted as the automatic door main controller, and therefore the advantages of high reliability and anti-interference are brought into full play. An MC33033 special control chip is used for controlling a brushless direct current motor, and therefore the safety and the reliability of the automatic door control system are greatly improved. As a pyroelectric infrared sensor is used for detecting whether someone is close to an automatic door, the automatic door control system is high in sensitivity, free of influence of the outside, and convenient to install and maintain.

Description

technical field [0001] The invention relates to a basic automatic door system, in particular to a smooth automatic door control system using PLC as the main controller of the automatic door. Background technique [0002] Automatic doors began to be used in buildings after the 20th century. In the late 1920s, with the opening of supermarkets in the United States, automatic doors began to be used. In 1930, Stanley of the United States launched the world's first automatic door (this historical material was recorded in the New York Times). Afterwards, DORMA, the world's number one automatic door brand, widely introduced hydraulic and air automatic doors to the market in 1945, and the main entrances of newly built buildings also began to be used. [0003] In 1962, electric doors began to appear, and then with the construction of cities, the field of automatic door technology is increasing every year. At the beginning, it was difficult to control the speed of the motor by suppl...

Claims

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Application Information

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IPC IPC(8): E05F15/20G05B19/05E05F15/73
Inventor 米振宇
Owner 米振宇
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