As its name suggests a garage door opener is a device that is connected to the opening and closing garage doors. In general, the models are controlled remotely.
The initial course consisted of a drive garage door, which could open or close the door. This disc was controlled by a remote control. The remote control has been used, very simple and consisted of a transmitter and the input side consists of a receiver and associated electronics. The receiver would be a change in the amplitude function. However, they had a great retreat that is security. Who can open an issuer, or close the garage door. There have been many cases, the opening of the garage neighbors accidentally when trying to open his own garage. The next change came with the dip switches. These DIP switches could total 256 matches. This was enough to overcome the problem of accidental opening of other garages, but still not solved the problem of security. Who can register a radio frequency, the frequency recorder, if someone opened his garage and later used this frequency to open the garage.
Today’s technology has security concerns largely overcome by the use of the frequency of rotation, or sometimes as a technology code-hopping. Currently all new frequency used to open and close the door.
The mechanical part mechanical part of the garage door is fairly simple. Three main types are used: chain drives, screw drives and belt drive. Chain drives are noisy, but are cheaper. Overlook and a nut to open and close the door. They are a bit expensive. The latest models use plastic liners to improve the tracks to reduce noise and speed. Belt drives are the quietest and most are relatively expensive. The mechanism also includes a primary source, which is the most important element of the system. In general, two types of springs and torsion springs are used linear expansion.
On the market are actually two types of garage door openers jackshaft type and trolley type. Even though the jackshaft type occupies less space, the type of carriage and the most popular. Because of security, in the way of tree removal, it is difficult to make sense when a person or animal is crushed under the door.
Some modern systems, auto-reverse in case of disability as an animal or a vehicle. Remote controls typically operate up to a distance of 150 meters. In addition, most systems are equipped with keyboards that are installed outside the garage and can be used when the remote goes dead