Võtmeandur

Võtmeandur, which translates to "key sensor" in English, is a component found in various electronic devices, particularly those that require a secure or authenticated access method. Its primary function is to detect the presence or absence of a specific physical key or a digital key representation. This can range from simple mechanical keys in locks to more complex electronic keys used in key card systems or vehicle ignition.

In some contexts, võtmeandur might refer to a switch that is activated by the insertion or turning of a key. For example, in a car, the ignition cylinder contains a switch that is engaged when the key is turned, signaling the car's computer to begin the starting sequence. In electronic locks, a sensor might detect the presence of a key card or fob, verifying its authenticity before granting access.

The technology behind a võtmeandur can vary significantly. Mechanical sensors rely on physical contact to register the presence of a key. Electronic sensors might use magnetic fields, optical signals, radio frequency identification (RFID), or other methods to communicate with the key and confirm its identity. The specific implementation depends heavily on the application and the required level of security and functionality. The term is broad and encompasses a range of sensing mechanisms used to interact with key-based authentication systems.