The computer technology used in the fingerprint recognition function of the access control system is "pattern recognition". The so-called pattern recognition problem is to use calculation methods to classify samples into certain categories based on their characteristics. Pattern recognition is Computers use mathematical techniques to study the automatic processing and interpretation of patterns, and the environment and objects are collectively referred to as "patterns."
The computer technology used in the fingerprint recognition function of the access control system is "Pattern Recognition".
The so-called pattern recognition problem is to use calculation methods to classify samples into certain categories based on their characteristics. Pattern recognition is to use mathematical techniques to study the automatic processing and interpretation of patterns through computers. The environment and objects are collectively referred to as "patterns". With the development of computer technology, it is possible for humans to study complex information processing processes. An important form of this process is the recognition of the environment and objects by living entities. Pattern recognition takes image processing and computer vision, speech and language information processing, brain network group, brain-like intelligence, etc. as its main research directions to study the mechanism of human pattern recognition and effective computing methods.
Fingerprint access control system
Fingerprint access control replaces the traditional key with your finger. When using it, you only need to place your finger flat on the collection window of the fingerprint collector. The unlocking task is very simple to operate, avoiding the disadvantages of other access control systems (traditional mechanical locks, password locks, identification cards, etc.) that may be forged, stolen, forgotten, and deciphered.
The hardware of the fingerprint access control system mainly consists of a microprocessor, fingerprint recognition module, LCD display module, keyboard, real-time clock/calendar chip, electronically controlled lock and power supply. The microprocessor serves as the host computer of the system and controls the entire system. The fingerprint identification module mainly completes functions such as collection, comparison, storage, and deletion of fingerprint features. The LCD module is used to display information such as door opening records, real-time clock, and operation prompts, and forms a human-machine interface together with the keyboard.
According to system functions, the software mainly consists of fingerprint processing module, liquid crystal display 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; the liquid crystal display module writes the driver program according to the timing of the liquid crystal display module to achieve the purpose of displaying Chinese characters and characters; the real-time clock module operates according to the clock Chip timing, write communication program. Realizes reading and writing operations on the clock chip; the keyboard scanning module writes a keyboard program based on the design principles of the keyboard to identify whether there is a key action and the key number of the pressed key.
According to the operation process, the software mainly consists of four parts: fingerprint door opening program, fingerprint management program, password management program and system setting program. Only administrators have this permission for fingerprint management, password management and system settings. The fingerprint management program consists of four parts: the fingerprint template registration program, the fingerprint template deletion program, the fingerprint template clearing program and the browse door opening record program; the password management program consists of two parts: the password modification program and the password door opening program; the system setting program consists of the time setting program and the password opening program. The date setting program consists of two parts.
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