Shulou(Shulou.com)06/03 Report--

What this article shares with you is about the computer technology used in the fingerprint identification function of the access control system. The editor thinks it is very practical, so I share it with you. I hope you can learn something after reading this article. Let's take a look at it with the editor.

The computer technology used in the fingerprint recognition function of the access control system is "pattern recognition". The so-called problem of pattern recognition is to divide the samples into certain categories according to the characteristics of the samples by means of calculation. Pattern recognition is to study the automatic processing and interpretation of patterns by computers using mathematical techniques, 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 problem of pattern recognition is to divide the samples into certain categories according to the characteristics of the samples. Pattern recognition is to study the automatic processing and interpretation of patterns by computers with mathematical techniques, and the environment and objects are collectively referred to as "patterns". With the development of computer technology, it is possible for human beings to study the complex information processing process, and an important form of the process is the identification of environment and object by life. Pattern recognition focuses on image processing and computer vision, speech and language information processing, brain network group, brain-like intelligence, etc., and studies the mechanism and effective calculation methods of human pattern recognition.

Fingerprint access control system

The fingerprint access control uses the finger instead of the traditional key, and the unlocking task can be completed by placing the finger flat on the acquisition window of the fingerprint collector, and the operation is very simple. Avoid other access control systems (traditional mechanical locks, password locks, identification cards, etc.) may be forged, embezzled, forgotten, deciphered and other disadvantages.

The hardware of fingerprint access control system is mainly composed of microprocessor, fingerprint identification module, liquid crystal display 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. The fingerprint identification module mainly completes the functions of fingerprint feature acquisition, comparison, storage, deletion and so on. The liquid crystal display module is used to display information such as door recording, real-time clock and operation prompts, and together with the keyboard to form a man-machine interface.

According to the system function, the software is mainly composed 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 the command and return code between the microprocessor and the fingerprint identification module; the liquid crystal display module compiles a driver 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 writes a communication program according to the timing of the clock chip. realize the read and write 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 pressing a key.

According to the operation flow, the software is mainly composed of four parts: fingerprint open door program, fingerprint management program, password management program and system setting program. Only the administrator has this right in the three parts of fingerprint management, password management and system settings. The fingerprint management program consists of four parts: the registration fingerprint template program, the delete fingerprint template program, the emptying fingerprint template program and the browsing door record program; the password management program consists of two parts: the password modification program and the password opening program; the system setting program consists of time setting program and date setting program.

These are the computer technologies used in the fingerprint identification function of the access control system. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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