Property fingerprint

Fingerprint access control system uses fingers instead of traditional keys. When in use, you only need to put your finger flat on the collection window of the fingerprint collector to complete the unlocking task. The operation is very simple, and other access control systems (traditional mechanical locks, coded locks, identification cards, etc. ) may be forged, stolen, forgotten and destroyed.

Composition of fingerprint access control:

The hardware of fingerprint access control system is mainly composed of microprocessor, fingerprint identification module, LCD module, keyboard, real-time clock/calendar chip, electronic lock and power supply. As the upper computer of the system, the microprocessor controls the whole system. Fingerprint identification module mainly completes the collection, comparison, storage, deletion and other functions of fingerprint features. The LCD module is used to display information such as door opening record, real-time clock, operation prompt and so on, and forms a man-machine interface with the keyboard.

According to the system function, the software mainly consists of fingerprint processing module, LCD module, real-time clock module and keyboard scanning module. The fingerprint processing module is mainly responsible for the information processing of commands and return codes between the microprocessor and the fingerprint identification module; According to the timing of the LCD module, the LCD module writes a driver to display Chinese characters and characters. The real-time clock module writes a communication program according to the time sequence of the clock chip to realize the reading and writing operation of the clock chip; The keyboard scanning module is to write a keyboard program according to the design principle of the keyboard to identify whether there is a key action and the key number of the pressed key.

According to the operation flow, the software mainly consists of four parts: fingerprint door opening program, fingerprint management program, password management program and system setting program. Among them, only administrators have this right to manage fingerprints, passwords and system settings. The fingerprint management program consists of four parts: fingerprint template registration program, fingerprint template deletion program, fingerprint template removal program and browsing door opening record program. Password management program consists of two parts: password modification program and password opening program. The system setup program consists of two parts: time setup and date setup program.

Classification of fingerprint access control:

Access control can be divided into inductive ID/IC card access control, biometric access control [such as fingerprint access control, face access control, palm print access control, iris access control], magnetic card access control and password access control.

According to the data processing mode, access control includes independent access control (without access control data storage and intelligent control management functions) and networked access control (with access control data storage function and equipped with management software for intelligent control management). The networked access control host is divided into access control integrated machine and access control split controller.

For details, please consult Doyle Zhikong.