AS608 Optical Fingerprint Sensor
حساس بصمة الاصبع ضوئي
Supply voltage: DC 3.3V
supply current: Operating current: <60mA
peak current: <60mA
fingerprint image entry time: <1.0 seconds
Window area: 15.3╳ 18.2 mm
Three working principle
The feature extracted by the fingerprint algorithm from the acquired fingerprint image represents the information of the fingerprint. Fingerprint storage, comparison and search and so on through the operations to complete minutiae.
2. Fingerprint processing consists of two processes: fingerprint login process and fingerprint matching process [where fingerprint matching is divided into fingerprint comparison (1:1) and fingerprint search (1:N)].
When the fingerprint is registered, each fingerprint is entered twice, and the recorded image is processed twice, and the composite template is stored in the module.
When the fingerprint is matched, the fingerprint image is entered and the fingerprint image is verified and processed, and then matched with the fingerprint template in the module. If the template is matched with a template specified in the module, it is called a fingerprint comparison method, that is, 1:1. Mode; if matching with multiple templates, called fingerprint search mode, ie 1:N mode), the module gives the matching result (pass or fail).