Automated door systems have been around for many years. Most automatic doors usually consist of sensors that will trigger the closing and opening of the doors when need be. We’ll now look at different sensors to understand more about the technology behind automatic doors.
- Pressure Sensors
During the 1960s, there were ‘control mats,’ and they would be placed at the entrance to detect whether someone was approaching. The mats can detect changes in pressure and weight in specific areas. When the weight on the mat exceeds the set limit, the doors will open.
Such a system has some advantages since the automatic door will remain open as long as there is some pressure on the mat. If a person is standing or they’re walking close to the door, it’ll remain open. In this case, your entry and exit will be swift, considering the door won’t close in on you.
Most of the automated door systems that are advanced usually utilize pressure sensors as backup sensors. If the main sensor malfunctions, the pressure sensor will be triggered, which means the automated door will be operational throughout.
- Optical Sensors or Motion Detectors
Most of the automated doors usually make use of optical sensors. The sensors will be placed on the sides of each door such that they can trigger the closing and opening of the door. As the name implies, the sensors usually detect motion in front of the door. For these sensors, the motion will be detected by microwave beams produced by an antenna placed on a door header, and it has been pointed downwards and in an outward direction.
The sensors are effective; however, they have some shortcomings since they detect only motion. Thus, when you’re standing still, the sensor will not detect you, and you’ll experience some issues opening the door.
- Infrared Sensors
These are specialized sensors, and they usually use infrared technology. The sensors will detect whether there are any changes in temperature in the surroundings close to the door. When you approach the door, the sensor will detect your heat signature, and the doors will open such that you can enter or exit the premises.
The sensors can work effectively on their own. In most cases, different sensors are combined to make up a single system to ensure no challenges come about. For instance, the motion sensor will trigger the opening mechanism. If a person is standing still, the pressure sensor will detect changes in weight, and it will trigger the door to open.
How Do the Doors Open?
When the sensors detect your presence, they will open or close the door. The sensors have been connected to a drive train, and it’s electronic. The drive train has been attached to the door’s panels using a cogwheel or auxiliary drive. The auxiliary drive has been connected using rubber belts that will regulate the doors’ closing and opening. At the bottom, some rollers ensure the door slides smoothly.
Different benefits accrue from automatic doors. Amid the pandemic, the doors can open contact-free, which means the spread of the virus will be minimized because of the contact-free functionality. The contact-free solutions also ensure there is improved hygiene. The automated doors also offer convenience. Tech firms and hardware companies are working together to ensure that the automatic doors will work more efficiently.