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Access control system technology inventory

Author: huifan   Time: 2020-02-10

Current access control system technology applications
 
Password recognition
 
Password identification, as the name suggests, is to identify the access rights by entering the correctness of the password. The advantage is that the operation is convenient without the need for a card. The disadvantage is that the password is easy to leak, the security is not high, there is no entry and exit records, and only one-way control. The keys are easily damaged and malfunction. .
 
Card recognition
 
Card identification The access authority is identified by card reading or card encryption. Cards include magnetic cards and radio frequency cards. Magnetic cards have the advantages of low cost, one person, one card, general security, and door opening records; the disadvantages are cards, equipment wear, short life, cards are easy to copy, and card information will be invalid due to the loss of external magnetic fields. Advantages of RF card The device has no contact, convenient and safe door opening, long life and high security. It has a door opening record and can realize two-way control. The card is difficult to be copied. The disadvantage is higher cost.
 
Biometrics
 
Biometric recognition is to identify the access authority by detecting the biometrics of the person, such as fingerprint recognition, face recognition, vein recognition, etc. The advantage is that the security is extremely high, no need to carry a card; the disadvantage is that the cost is high, and the recognition rate has requirements on the installation environment and the user.
face recognition access control
Access Controller
 
The access control controller is further divided into two types: the controller's own card reader and the controller and the card reader. The disadvantage of the built-in card reader of the controller is that the access control controller must be installed outside the door, some control lines may be exposed outside the door, and the door can be easily opened without a card or password, and the security is not high; the controller and the card reader are separated Only the line of the card reader is outside the door, the other control lines are inside the door, and the card reader transmits digital signals. Therefore, no one can enter the door with invalid cards or passwords, and the security is high.
 
Face recognition technology is a new biometric technology that combines biology, psychology, and cognitive sciences with multiple disciplines and technologies (pattern recognition, image processing, computer vision, etc.). It can be used for identity verification (one-to-one comparison). (Yes), identity authentication (one-to-many matching), access control (gate surveillance system), security monitoring (bank, customs monitoring), human-computer interaction (virtual reality, games), etc., have a wide range of market applications due to their technical characteristics prospect.
 
Communication method
 
TCP / IP wired and wireless communication is a more common communication method currently used in access control systems and computer servers. The advantage is that the management center can be changed at any time, especially wireless communication is free of wiring, reducing costs, and it is easy to implement remote management and other The security management system is integrated to further improve security; the disadvantage is that the stability of the system communication depends on the stability of the local area network, which is suitable for large-scale access control management systems and decentralized units.
 
Face recognition technology
face recognition technology
Face recognition technology is a new biometric technology that combines biology, psychology, and cognitive sciences with multiple disciplines and technologies (pattern recognition, image processing, computer vision, etc.). It can be used for identity verification (one-to-one comparison). (Yes), identity authentication (one-to-many matching), access control (gate surveillance system), security monitoring (bank, customs monitoring), human-computer interaction (virtual reality, games), etc., have a wide range of market applications due to their technical characteristics prospect. In the early stage of face recognition research, recognition technology mainly relied on prior knowledge of people, that is, two-dimensional face recognition methods. In the 1980s, two-dimensional image processing technology became more and more mature. Under certain constraints, face recognition can achieve better results, but at the same time, it also exposed shortcomings such as poor recognition of the environment and face pose changes.
 
Currently used for access control and attendance environments is a multi-light source face recognition technology. For example, Vladivostok is a visible light face recognition technology. It can already implement face recognition under a variety of auxiliary light sources that are completely harmless to the human body. Support PC (Windows / Linux) and ARM / DSP (Linux, etc.) system environments. Today's algorithms have also been able to guarantee the superiority of various indicators such as recognition rate, recognition speed, misrecognition rate and rejection rate, ensuring short-distance faces. Detect capture.
 
Digital building and mobile phone card
 
The technical development of the access control system is also inseparable from the wave of digital automation and network big data. Digital buildings and smart cards have become popular in smart cities. With the popularization of building automation and smart cards, the access control system can be derived from the users. The value-added value is continuously increasing, and the access control system is playing an increasingly important role in the standardized management of user business processes. So what's behind their convenience and widespread use?
 
With the accumulation of project experience, the access control system and the building automatic control system fit more closely, and more and more complex and intelligent linkage applications have appeared. For example, the intelligent building system can collect data on the number of people in the office area on each floor during the off-hours to determine whether to control the lighting system to turn off the lights and whether to control the defense area of ​​the burglar alarm system; after the work, employees come back to work temporarily At the same time, it can automatically turn on the lights on its working floors and automatically disarm the anti-theft alarm system; when a fire occurs, displaying the list of personnel in all areas can quickly lock rescue objects and other functions, which can achieve automatic intelligent management and provide more effective security for life and property. protection.
 
On the other hand, the access control system always plays an important role in the card system. The initial card is only for the purpose of realizing a card to avoid repeated operations and management of cardholder information in multiple systems. In actual projects, with in-depth communication with customers and demand mining, it is found that the core problem that more and more customers need to solve is the management and continuous improvement of work processes. Providing a set of one-card systems alone cannot fully satisfy customers Demand, and a set of personnel management and workflow solutions will be the trend of future market development.
 
Mobile phone access control card
 
Compared with other access control, mobile access control card appears to be flexible and rich, convenient and fast. Nowadays, users are almost all in the era of smart phones. As we all know, with the popularity of broadband and the Internet, it is closely related to our daily lives, bringing unexpected conveniences to new lifestyles and work, such as smart phones to control homes and even access control systems.
 
 
 
Where is the mobile phone card based on other access control advantages? The mobile phone card system supports the RE-UIM card. It is a CPU card, supports two-way authentication, a strict encryption mechanism, and has a high degree of security. The mobile phone is carried around, and the user does not need to bring another card, and the application of the mobile phone card eliminates the previous generation of punching and card The phenomenon of lending to others; the mobile phone card supports a number of sub-functions such as access control, attendance, and consumption. Through the mobile phone network, you can achieve card issuance and recharge in the air, which is flexible and fast. The use range of the mobile phone card is extended to any unit and community, which truly realizes the universality of the card. In addition to the general control, the card system can also be equipped with multiple management sub-controllers to perform system control and authorization in different areas, and attendance and patrols. Other systems can share the network architecture of the access control system, thereby improving system utilization.
 
Compared with other access control, mobile access control card appears to be flexible and rich, convenient and fast. Nowadays, users are almost all in the era of smart phones. As we all know, with the popularity of broadband and the Internet, it is closely related to our daily lives, bringing unexpected conveniences to new lifestyles and work, such as smart phones to control homes and even access control systems.
 
How to make the best selection for engineers and users
 
With the development of inductive card technology and biometric identification technology, the access control system has developed by leaps and bounds. It has entered a mature period and various technologies such as inductive card access control systems, fingerprint access control systems, iris access control systems, facial recognition access control systems and other technologies have appeared. Systems, they have their own specialties in terms of security, convenience, and manageability, and the application fields of access control systems are also getting wider and wider. So what are the factors to consider when choosing an access control?
 
Selection from product types, such as offline independent access control and networked access control. The independent access control machine sets access permissions through the main card, auxiliary card, or password keyboard. The advantages are convenient wiring construction and low price. The disadvantage is that there is no personalized access control, no access record query, and only basic access control functions. Setting is more complicated. The networked access control machine can set the access permission management through the management software of the back-end server, set powerful access control management functions and permissions, and can monitor the access control situation in real time, query records, the more doors, the more convenient the management, the higher the security; the disadvantage is the wiring More, the price is higher than the independent access control machine.
dynamic facial access control
From the aspect of function selection, biometric access control devices and card identification access control devices, such as fingerprint identification all-in-ones or card readers, have high security, and do not need to bring a card to avoid missing keys and unable to open the door. The disadvantage is high cost There are requirements for the installation environment and users; the cost of card identification is low, and the disadvantage is the risk of the card being copied. From the aspect of access control machine with LCD display, LCD display is easier for human-computer interaction, more humane, and shortcomings of LCD life.
 
From the selection of origin, China's access control products have been quite mature to date. Perhaps foreign access control products are also very mature. Some foreign brands have better stability than some Chinese brands, but they may not be suitable for practical applications in China, such as price. Problems, usage habits, and more. Or the stability of some Chinese brands will be better than foreign brands, so the specific application environment is selected according to the actual situation.
 
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