Operating principle of Automatic Door
The operation of all doors that are controlled by automatic systems is based on the principle of movement of the door leaf with the help of an electric drive. The main part in this drive is the motor. With the help of gearboxes and other mechanisms, the rotational energy is transmitted to the drive for closing and opening the door panels.
Sliding door automation ensures that the door is closed when necessary. With the help of sensors that respond to a person or to movement, the system recognizes that there is a person in front of the door.
The sensor will send a signal to the control controller, which, in turn, will send a signal to the executive system, that is, to the electric drive. So the door will open. Then, after a while, the door will automatically close.
Automatic doors have become a common sight in various public and commercial settings, providing convenience, accessibility, and enhanced safety for users. These doors operate seamlessly, opening and closing automatically in response to the presence or movement of individuals. This article aims to shed light on the operating principle behind automatic doors, exploring the technology and mechanisms that make them an integral part of modern building entrances.
1. Sensor Systems:
Automatic doors rely on advanced sensor systems to detect the presence of individuals approaching or moving within their vicinity. Different types of sensors can be employed, including:
a. Motion Sensors: Motion sensors use various technologies such as infrared, microwave, or ultrasonic waves to detect motion within a defined range. When someone approaches the door, the sensor registers their movement and sends a signal to initiate the opening mechanism.
b. Presence Sensors: Presence sensors use infrared or microwave technology to detect the presence of individuals near the door. These sensors create an invisible field or curtain, and when someone interrupts this field, the door responds by opening.
c. Pressure Sensors: Pressure sensors are commonly found on floor mats or footplates near the door. They detect the weight or pressure exerted when someone steps on them, triggering the door to open.
2. Activation and Control Mechanisms: Once the sensors detect the presence or movement of individuals, they transmit signals to the control system of the automatic door. The control system interprets these signals and initiates the appropriate action to open or close the door. The mechanisms involved in the activation and control of automatic doors include:
a. Motor and Drive System: Automatic doors are equipped with electric motors and drive systems that facilitate the movement of the door panels. The control system activates the motor, which then drives the door to open or close smoothly.
b. Safety Sensors: Automatic doors are equipped with safety sensors that prevent the door from closing on someone or something in its path. These sensors use technologies such as infrared beams or pressure-sensitive strips to detect obstacles, causing the door to reverse its movement or stop altogether.
c. Timing and Delay Systems: Automatic doors incorporate timing and delay systems to ensure smooth operation and prevent unnecessary openings. These systems control the duration of door opening, allowing sufficient time for individuals to pass through before closing.
3. Types of Automatic Doors:
There are various types of automatic doors, each with its own unique operating mechanisms. Some common types include:
a. Sliding Doors: Sliding automatic doors consist of two or more door panels that slide horizontally, opening or closing in a synchronized manner.
b. Swing Doors: Swing automatic doors operate similarly to traditional hinged doors but with motorized mechanisms. They can swing inward or outward, depending on the design and building requirements.
c. Revolving Doors: Revolving automatic doors consist of multiple rotating panels that form a circular entrance. Individuals can enter or exit by pushing the panels, and the door's control system ensures a smooth and continuous rotation.
Conclusion:
Automatic doors have revolutionized the way we interact with building entrances, providing convenience, accessibility, and safety. By utilizing sophisticated sensor systems, activation mechanisms, and control systems, automatic doors can detect individuals' presence or movement and respond by opening or closing. The integration of motorized drive systems and safety sensors ensures smooth operation and prevents accidents. With their advanced technology and intuitive design, automatic doors continue to enhance the efficiency and user experience in a wide range of public and commercial spaces.
