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The principle of automatic doors
Category：The industry of science and technology Publish：2014-05-08 08:45:24
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The basic workings of principle of automatic door automatic door automatic door machine basic components roughly the same, with these compositions, plus the door signal, it can be configured using a simple menu of automatic door systems. System configuration is based on the use of automatic doors equipped with on demand, automatic door controller is connected to the external auxiliary control device, such as open source, access control systems, security devices, centralized control, and so on. Be adapted to the characteristics of the building. Through the composition of, and building automation system requirements reasonably equipped with auxiliary control device. 1, and door signal automatically door of door signal is touch points signal, microwave radar and infrared sensor is common of two species signal source: microwave radar is on objects of displacement reaction, thus reaction speed fast, applies Yu walking speed normal of personnel through of places, it of features is once in door near of personnel didn't want to out and still not moving Hou, radar will no longer reaction, automatically door on will close, Portal machine has must of protection role; infrared sensor on objects exists for reaction, regardless of personnel mobile or not, As long as the are within the range sensor scan, which would have an outgoing contact signal. Disadvantage is that the infrared sensor response slower, suitable for slow-access sites. In addition, if the automatic doors to accept contact signal for too long, the controller signal input system will be considered as obstacles. And automatic sliding doors stay open for a long time, damage to the electrical components. Since the microwave radar and infrared sensors do not know nearly automatic gate do you really want to walk in the door, so some prefer to use a key switch. Push button switch is a button touch-points, more convenient is the so-called elbow touch switch. Elbow touch switches are rugged, especially elbows can be used to manipulate it. Avoid contact of the hands. Foot switch, functions the same way, but higher requirements for waterproofing, and pedal power is large, easy to invalidate a foot switch. There is a contact switch on the handle, and when the handle is pushed (or pulled in the opposite direction) in place, the portal offers contact signal. Building automation now sometimes made special demands, such as using the telephone, a line control to open the door. To meet this requirement, as long as the signal is passive contact signal. In some cases, antenna remote requests one. With a wireless receiver connected to the automatic doors-contact, and a wireless transmitter, you can meet the requirements. Now, however, too many sources of radio waves, easily lead to accidental door is a troubling issue. Timer can control state, the principle of which is the clock is attached to specific switching circuits, presetting time automatic door is open or locked state. 2, access control systems and automatic doors if non-public areas of the highest performance and quality requirements for automatic doors, large public areas are using very high frequency, then the autogate feature requirement is to choose a non-public area of the access officer. Getting started with access control system is the authorized identification. Introduction to identification or detection after the adoption, providing door to automatic door control system signals. Before providing door signal, automatic doors must be in a locked state. Access control systems ranging from simple key switch, combination lock, magnetic card lock. (Attendance statistics system). Weight recognition all the way to complex systems, such as fingerprint identification systems. But regardless of how complex systems, and ultimately to provide automatic door open contact signal. Signal circuit is independent of the shield to avoid signal interference by mistake opened the door is very important. 3, automatic door requirement is coordination between unlock and open the door. Apply to electronic automatic sliding door locks has locks, electromagnetic locks and unlocks the belt hanging pieces of the electric lock, lock motor for three. Which is used to heavy duty automatic sliding door, automatic swing door electric lock solenoid door stopper, electronic latch locks and electronic door openers, electronic direction without affecting the open door to door forcing, prone to malfunction. There is also a mechanical lock contact switch, lock in combination with switches, locks are not in the unlocked state, contacts cannot contact, unlikely to misuse. 4, the concept of centralized control of centralized control, including centrally monitor the State and centralized operations more automatic door automatic doors two meanings, centrally monitor the automatic door closing status can be achieved through the position signal output circuit,-contact switch can be used, when the door reaches a certain position (open position), touch switch to contact signal. Inductive signal generator can also be used when sensors detect the signals when the door is in a certain position. Set the appropriate indicator in the control room, you can display the status of automatic doors, and concentrated operations commonly referred to as simultaneously more than one door open or locked, depending on automatic door controller has no corresponding terminals.
