The access control card is an important part of the security system. Because it involves identity identification and consumption management, the security of the system is always placed first.
Lize Smart’s Zheng Ping said that first of all to ensure the security of the front-end equipment, mainly referring to cards and card readers, it is recommended to use more secure CPU cards and card readers, because the encryption function of the CPU card is far stronger than before Use the Mifare1 card. However, the real application of the specific analysis of specific issues, from the cost point of view, the current Mifare1 cards and readers in the access control card system is the most widely used, and due to last year's "break the door" incident, Mifare1 card manufacturers also upgrade the encryption level Basically, it can meet the needs of regular users. For users with high encryption requirements, it is recommended to use a CPU card access control card.
At present, the user has a stable and reliable product quality in the card system for access control, which is the first requirement. Secondly, the function needs to be customized to meet the specific needs of the customer; the degree of integration is high, the software database is unified, and card issuance and cancellation are unified. Subsystems are unified in terms of transmission methods, easy to use, and friendly to man-machine interfaces.
Standards are not uniform, one card is difficult to pass
The lag in standards has plagued the openness of access control systems, affecting the interface protocols of various subsystems and the functions that can be achieved through interfaces. Mainly in:
First of all, the format between the card and the reader is various. Commonly there are EM, Mifare1, etc. The cards of various formats are incompatible with each other and need corresponding configuration. See the table below for details:
Secondly, there are many ways to transmit signals between card readers and access controllers, including Wiegand, RS485, ABA (Megnetic), and RS232. Among them Wiegand's commonly used ones are divided into Wiegand26, Wiegand32, Wiegand34 and so on.
In addition, the communication methods between the access controller and the PC software include RS485, RS232, and TCP/IP. Although the current trend is TCP/IP, no unified standard has been formed.
In addition, there is also a lack of uniform standards among the various subsystems of access control cards. Unlike the BAS system, there are industry-standard OPC protocols. Therefore, system integration will consume more manpower and material resources.
Mo Mingfeng, deputy general manager of Guangzhou Ruilid Information Systems Co., Ltd., said that although CPU cards are an inevitable trend to replace Mifare1 cards, in order to be able to continue to survive in the market, card product suppliers should select a card standard as soon as possible. Develop CPU card products and applications, follow up the development and application of CPU cards.
With the growing popularity of the card, for those professional companies that only provide a certain subsystem, even if a new product for this kind of CPU card is developed for this kind of subsystem, there are many standards for the CPU card, such as the inability to provide a card for other children. System, its target market will inevitably shrink. Therefore, providing comprehensive card applications should be included in the market plan for security class card suppliers.
In addition, since the solution of the single card spans two major areas of security prevention and internal management, the management software platform accessing the ERP or office automation system should be an inevitable trend in the future. Therefore, for the card solution provider or related subsystem supplier, Said that we should focus on improving the openness of the system, and strive to enrich the interface protocols of each subsystem and the functions that can be achieved through the interface, so that system integrators or ERP software providers can develop application platforms for construction units.
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