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Do you know the opening signal of rolling shutter door? Many friends do not understand this problem. Let jinan shutter door factory talk about the relevant content of the opening signal of the shutter door.
The opening signal of rolling shutter door is contact signal, microwave radar and infrared sensor are two commonly used signal sources:
Microwave radar is the displacement response of the object, so the reaction speed is fast, suitable for people with normal walking speed through the place, its characteristics is that once the people near the door do not want to go out and remain still, the radar will no longer react, the rolling shutter door will close, has a certain protective effect on the door machine; Infrared sensors react to the presence of objects, no matter whether people move or not, as long as they are in the scanning range of the sensor, it will respond to the outgoing contact signal. The disadvantage is that the reaction speed of the infrared sensor is slow, and it is suitable for the places with slow personnel.
If the rolling shutter door receives the contact signal for too long, the controller will think that the signal input system has obstacles. And if the automatic translation door is kept open for too long, it will also cause damage to the electrical components. Because microwave radar and infrared sensors do not know whether people close to the shutter door really want to enter the door, so some occasions are more willing to use the button switch. Key switch can be the button of a touch type, more convenient is so-called elbow touch switch. Toggle switch is very durable, especially it can be operated by elbow, avoid hand contact.
There is a foot switch, the same function, but the waterproof requirements are higher, and the strength of the foot is very large, easy to make the foot switch failure. There is also a handle with a contact switch that provides a contact signal to the door machine when the handle is pushed (or pulled in the opposite direction) into place.
Nowadays, building automation sometimes puts forward special requirements, such as the use of a telephone line to control the opening of the door. To achieve this requirement, just ensure that the signal is passive contact signal. In some cases, people will ask for remote control of the antenna. Contact connection with a wireless receiver and rolling shutter door, coupled with a wireless transmitter, can meet the requirements.
However, there are so many sources of radio waves that opening doors accidentally is a troublesome problem. The timer can electrically control the state of the door. Its principle is to connect the clock with a specific switching circuit, and the rolling shutter door can be automatically opened or locked at a preset time.
Hope that through the introduction of this article you can better choose products. If you have other questions, please consult the official website of Jinan rolling shutter Door Company www.jnzxmy.com for details.