发布人：http://www.kdjlm.com 发布时间：2021-02-24 16:41:34
Do you know how induction occurs when rolling shutter door is opened? I believe many friends who don't know about door industry can't solve this problem, so today we Jinan electric rolling shutter door manufacturers will tell you in detail, hope that through our introduction can increase your understanding of the door.
1. The opening induction signal of rolling shutter door is contact signal. Microwave radar and infrared sensor are two common signal sources: microwave radar is the displacement response of objects, so the response speed is fast. It is suitable for people with normal walking speed to pass through. Its characteristic is that once the people close to the door do not want to leave, but still, the radar will no longer react, and the rolling shutter door will close Closed, has a certain protective effect on the door machine; infrared sensor is to respond to the existence of objects, whether people move or not, as long as it is within the scanning range of the sensor, it will respond, that is, it will send out contact signal. The disadvantage is that the infrared sensor has a slow response speed, which is suitable for slow-moving personnel.
Jinan rolling shutter door
2. If the roller shutter receives the contact induction signal for a long time, the controller will consider that the signal input system is faulty. And if the automatic moving door remains open for a long time, it will cause damage to the electrical components. Because microwave radars and infrared sensors don't know if people who are close to the shutter door will really come in, they prefer to use the button switch in some cases.
The button switch can be a contact type button, which is more convenient to be called elbow touch switch. The service life of elbow switch is very long, especially it can be operated with elbow. Do not touch hands. There is also a foot switch, which has the same function, but it has higher requirements for waterproof, and the force of foot is greater, so it is easy to make the foot switch fail. There is also a handle with a contact switch. When it is pushed (or pulled in the opposite direction), it transmits the contact signal to the gantry crane.
Nowadays, building automatic control system sometimes has special requirements, such as controlling the door through a line of telephone. In order to meet this requirement, we only need to ensure that the signal is a passive contact signal. Sometimes, people will ask for remote control antenna.
Through a wireless radio and rolling door contact connection, and then with a wireless radio, can meet the requirements. However, now there are too many radio wave sources, it is easy to cause the trouble of accidentally opening the door. The timer can electrically control the state of the door. The principle is to connect the clock to a special switch circuit. The rolling shutter door can be opened or locked automatically within the set time.
I believe that after reading this article, we have a very deep understanding. The door opening induction signal of the rolling shutter door is the contact signal, which transmits the contact signal to the door machine, and can also be operated by remote control.