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The principle of induction automatic door? Edit The basic composition of induction automatic door machine is basically the same. With the above composition, plus the door opening signal, it can be configured into a simple automatic door system
Effect diagram of induction automatic door .
The system configuration of the automatic door refers to the peripheral auxiliary control devices connected to the automatic door controller that are equipped according to the usage requirements, such as door opening signal source, access control system, safety device, centralized control, etc. It must be based on the usage characteristics of the building. Through the composition of personnel and the system requirements of building automation, auxiliary control devices are reasonably equipped.
, door opening signal
The door opening signal of the automatic door is a contact signal. Microwave radar and infrared sensor are two commonly used signal sources:
Microwave radar responds to the displacement of objects, so the reaction speed Fast, suitable for places where people with normal walking speed pass by. Its characteristic is that once the people near the door do not want to go out and remain still, the radar will no longer respond and the automatic door will close, which has a certain protective effect on the door operator.
The infrared sensor reacts to the presence of an object. Regardless of whether the person moves or not, as long as it is within the scanning range of the sensor, it will react and send out a contact signal. The disadvantage is that the response speed of the infrared sensor is slow, so it is suitable for places where slow-moving people enter and exit.
In addition, if the automatic door receives contact signals for too long, the controller will think that there is an obstacle in the signal input system. Moreover, if the automatic sliding door is kept open for too long, it will also cause damage to the electrical components. Since microwave radar and infrared sensors do not know whether the person approaching the automatic door really wants to enter, some occasions prefer to use key switches.
The key switch can be a contact button, and the more convenient one is the so-called elbow touch switch. Elbow switches are durable, especially since they can be operated with your elbows. Hand contact is avoided.
There is also a foot switch, which has the same function, but has higher requirements for waterproofing, and the foot pedal is very powerful, which can easily cause the foot switch to fail. There is also a handle with a contact switch, which provides a contact signal to the door operator when the handle is pushed (or pulled in the opposite direction) into place.
Nowadays, building automation sometimes puts forward special requirements, such as using a certain branch line of the telephone to control the door opening. To meet this requirement, just ensure that the signal is a passive contact signal. In some cases, people make requests for antenna remote control. Use a wireless receiver to make a contact connection with the automatic door, and then equip it with a wireless transmitter to meet the requirements. However, there are so many radio wave sources now that it is easy to accidentally open the door, which is a troublesome problem.
The timer can automatically control the status of the door. Its principle is to connect the clock to a specific switch circuit, and the time can be preset to automatically open or lock the automatic door.
, access control systems and automatic doors in non-public areas
Classification of induction automatic doors? Edit Induction automatic doors The opening and closing methods of the door body are divided into three categories: translational automatic doors, arc-shaped automatic doors Automatic doors, revolving automatic doors.
Sensor automatic door Sliding automatic door
Sliding automatic door is also the most common sensor automatic door. Generally, automatic door machines are designed according to the requirements of sliding automatic doors, that is, the door body moves in the horizontal direction, because the automatic Due to the limitations of the door operator track, the translation induction automatic door opens single or double in the horizontal direction after receiving the door opening signal.
Induction automatic door Curved automatic door
Curved automatic door As the name suggests, the structure of the door body is in an arc shape. When the door body receives the door opening (closing) signal, it moves in an arc shape, which can be understood as translation. The variation of the door is only through technical means
The curved automatic door realizes the movement of the door body with special trajectory.