Briefly introduce the classification of intelligent access control system
The intelligent access control security management system is a new modern security management system, which integrates the automatic identification technology of microcomputer and modern security management measures. It involves many new technologies such as electronics, machinery, optics, computer technology, communication technology, biotechnology, etc. It is an effective measure to realize security management at the entrance and exit of important departments. It is applicable to various confidential departments, such as banks, hotels, computer rooms, armoury, confidential rooms, office rooms, intelligent communities, factories, etc. What are the classifications of intelligent access control systems? Now Wuxi Dehang Technology Co., Ltd. will briefly introduce the intelligent access control system.
The intelligent access control system is classified according to the access identification mode
1. Password recognition
Identify the access authority by verifying whether the password entered is correct. This kind of products can be divided into two types: ordinary type and disordered keyboard type (the number on the keyboard is not fixed and changes automatically from time to time).
Common type: advantages: easy operation, no need to carry cards; Low cost. Disadvantages: Only three groups of passwords can be accommodated at the same time, which is easy to leak and has poor security; No entry and exit records; Only one-way control.
Disordered keyboard type: advantages: easy operation, no need to carry cards, slightly higher security factor disadvantages: passwords are easy to leak, and security is still not high; No entry and exit records; Only one-way control. High cost.
2. Card identification
The access authority can be identified by card reading or card reading plus password. According to card types, it can be divided into: · Advantages of magnetic card: low cost; One card for one person (+password), general security, computer connection, door opening record. Disadvantages: card and equipment are worn and have short service life; The card is easy to copy; It is not easy to control in both directions. Card information is easily lost due to external magnetic field, which makes the card invalid. Advantages of RF card: the card is contactless, convenient and safe to open the door; Long life, theoretical data at least ten years; High safety, computer connection, door opening record; It can realize two-way control. Card is difficult to copy Disadvantage: high cost
3. Biometrics
Identify the entry and exit by means of biological characteristics of inspectors. There are fingerprint type, iris type and face recognition type. Advantages: excellent security from the perspective of identification; Disadvantage of not having to carry cards: high cost. The recognition rate is not high, the requirements for the environment are high, the requirements for users are high, and the use is not convenient (for example, the iris type and face recognition type, the installation height and position are fixed, but the height of users are different). It is worth noting that most people think that the biometric access control system is very safe. In fact, this is a misunderstanding. The security of the access control system is not only the security of the recognition method, It also includes the safety of the control system, the software system, the communication system, and the power system. The whole system is a whole. The whole system is not safe if it is not qualified in any aspect. For example, some fingerprint access control systems controller It is integrated with the fingerprint identification device, and should be installed outdoors when installing, so that the wire controlling the lock switch is exposed outdoors, which is easy to be opened.
Intelligent access control systems are classified according to design principles
1. The controller has its own card reader (identifier)
The defect of this design is that the controller must be installed outside the door, so some control lines must be exposed outside the door, and professionals can easily open the door without cards or passwords.
2. The controller is separated from the card reader (identifier)
This type of system controller is installed indoors. Only the input line of the card reader is exposed outdoors, and all other control lines are indoors. The card reader transmits digital signals. Therefore, no one can enter the door without a valid card or password. Such systems should be the user's first choice.
