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What is the principle of fingerprint access control system? How does the process of fingerprint identification access control work? Fingerprint access control system refers to the use of fingerprint recognition as the access control system, which is a common entrance and exit control system. Widely used in companies, communities, banks, hotels and computer rooms and other fields. Combining electronic technology, biometric identification (fingerprint identification), computer system control, and communication technology, it is an important gateway security management solution.
First, the access control system needs to retain the user's fingerprints, establish a fingerprint database composed of multiple user fingerprint data, and establish a fingerprint model and archive it as the original comparison data, which can be completed by inputting the user's fingerprint information.
The user gently places the fingerprint finger and the fingerprint access control system captures the fingerprint information (also called the fingerprint acquisition window) to read the user's fingerprint image. The fingerprint sensor plays an important role in this, and the sensor has optical, radio frequency and semiconductor types. The fingerprint collection method is not the same, this site has a detailed introduction, the purpose is to obtain a complete user fingerprint information.
The access control system obtains the user's fingerprint information and sends the information to the management computer. The computer compares the database fingerprint model to determine whether it can be authorized to enter the access control within a specified period of time. The fingerprint data matching result directly affects the unlocking of the door lock and maintains the locked state.
The networked fingerprint identification access control system accepts personnel information and corresponding authorization information sent from the management computer. If the fingerprint matching is successful, the unlocking command is executed, and the user can enter the access control. If the recognition fails, the access control remains closed.
A single controller can form a simple access control system to manage one or two doors. Multiple controllers are connected to the computer through a communications network to form an access control system for the entire building. The management computer generally installs the management software of the access control system, manages all the information in the system, and can perform analysis and processing operations.
Fingerprint identification access control systems have single-control type and network control type. The main difference is that the communication method is not the same.
Stand-alone control type: Mainly applicable to small systems or units with centralized installation location, usually using RS485 communication mode;
Network control type: The communication method adopts the TCP/IP protocol commonly used in the network. The advantage of this type of system is that the controller and the management center transfer data over the LAN, which is suitable for use in large systems or in locations where installations are scattered.
The fingerprint identification access control system mainly completes the entire operation process through hardware and software, and each hardware part performs its own function and plays a different role.
Fingerprint Scanner: Fingerprint information is obtained by scanning a user's finger to obtain the user's complete fingerprint image.
Host: It accepts the fingerprint information sent by the fingerprint scanner, performs fingerprint data matching and recognition, judges and sends a command to the controller, and accepts the controller to send information.
Controller: Receives the command sent by the host and executes the command.
Motor: The main part of the door lock in the access control system. Execute the command of the controller and energize the drive for normal operation.
Transmission: Connect the motor and access control, realize linkage, and perform door opening action.
In addition, the fingerprint access control system also has a sensor system and an alarm system that can sense the human body. The alarm system can warn illegal intruders.
The above is the introduction of smart lock Chinese network Xiaobian published fingerprint access control system works, more fingerprint identification knowledge, please pay attention to the site section!
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