The biometric access control system is an access control system based on human biometrics, mainly including face recognition, fingerprint recognition, etc. In general, the development of biometric access control is on a spiral upward trend. At present, its application in smart security, video surveillance, building intercom, smart community, subway security, smart banking and other fields has greatly facilitated people's lives.
1. Fingerprint recognition access control system
The hardware of the fingerprint access control system is mainly composed of microprocessor, fingerprint identification module, liquid crystal display module, keyboard, clock/calendar chip, electric control lock and power supply. As the upper computer of the system, the microprocessor controls the whole system. The fingerprint recognition module mainly completes the functions of fingerprint feature collection, comparison, storage, deletion and so on. The liquid crystal display module is used to display information such as door opening records, real-time clock and operation prompts, and forms a man-machine interface together with the keyboard.
The fingerprint reading device (collector) uses photoelectric technology or capacitive technology to collect fingerprint information, and then performs feature extraction and compares it with the stored feature information to complete the identification process. This process is all completed in the reading device, or the reading device can only collect fingerprints, and then transmit it to a background device (such as a PC) to complete feature extraction and identification. The device for fingerprint collection alone is easy to be miniaturized, easy to use, and the system identification speed is also fast. The fingerprint feature collection requires the establishment of a prescribed relationship between the human finger and the collector during operation.
2. Face recognition access control system
Face recognition technology has unique advantages in the application process. For example, it is more convenient in the process of image information collection. It has gradually become the most direct and natural type of biometric recognition technology. It has become the focus of artificial intelligence and pattern recognition. It is also widely used in access control systems.
The face recognition access control system collects the face information of all personnel who are allowed to access the access control system and stores it in the face database. When a person accesses the access control system, the face recognition access control system will first obtain the portrait information through the camera, and then input the collected portrait information into the computer, and then perform face recognition. In this process, the system preprocesses the visitor's portrait information to avoid the influence of expressions, lighting and input devices on the results, extracts the features of the preprocessed portrait, and identifies and compares the extracted information with the face information in the database. , and record the result of the recognition. Once the face information that can be compared successfully is identified in the database, the access control system will receive the door opening command from the computer, and the hardware part of the access control system will allow visitors to enter; The system will not be opened, and the visitor's face information will also be recorded, which is convenient for future query and supervision.
Since the face recognition access control system can identify and record faces in a long-distance, fast, and non-contact manner, the access control system can be connected to the blacklist database or the database of public security organs in qualified buildings and communities and compared in real time to detect suspicious persons in time. And automatic warning to achieve intelligent security management.
Author:Written by Ms.Anna Zhang from S4A INDUSTRIAL CO.,LIMITED
Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.
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