Sensors Fingerprint sensors are mainly optical sensors and semiconductor sensors. Optical sensor mainly refers to the use of optical sensors such as coms to obtain fingerprints. Generally, the picture is made into a whole module in the market. This kind of sensor is low in price but large in size, and is generally used in fingerprint locks, fingerprint access control and other products. Semiconductor sensors are mainly monopolized by fingerprint sensor manufacturers such as Swedish fingerprint cards. They are divided into wipe-on type and surface type. Its price is relatively high, but its performance is still good. It is mostly used in important fields such as customs, military, and banking. Nowadays, with people’s awareness of home and the improvement of court security awareness, more and more manufacturers apply semiconductor surface sensors to the civilian field, and the user experience is also better. The product is small, the price is low, but the experience is poor. The speed and direction of scraping have an effect on the effect. Fingerprint module As the front end of the industry chain, the software companies and fingerprint lock research and development enterprises of China provide fingerprint module groups. —- Fingerprint anti-theft lock manufacturers
Most of these modules are imported from abroad for further improvement and provide corresponding secondary development space. Only after secondary development can the fingerprint module really play a role. The sensors of fingerprint locks are divided into optical sensors and semiconductor sensors. Optical Sensors Using Optical Sensors to Capture Fingerprint Images Optical sensors on the market are generally a complete module. The advantages of optical sensors are low price and strong anti-static ability, but due to the large size of optical sensors, they cannot identify living fingerprints, nor can they verify wet and dry fingers. Generally used for fingerprint locks and fingerprint door bans, etc. There are two types of semiconductor sensors: wipe-on type and surface type. Surface type is more expensive but has limited performance. Commonly used in military, banking and other important industries. Fingerprint combination lock proxy semiconductor sensor uses the principles of capacitance, electric field, temperature and pressure to collect fingerprints. Forged fingerprint materials cannot be recognized by semiconductor sensors, so semiconductor fingerprint chips are expensive, but their security is naturally high.
Post time: Jul-06-2022