It is an effective measure to solve the entrance and exit problems of important departments and realize safety management. Suitable for all kinds of security departments, such as banks, hotels, parking lot management, computer rooms, armories, confidential rooms, offices, intelligent communities, factories and so on.
Composition:
1, identification
Identity recognition unit is an important part of access control system, which plays the role of identifying and confirming the identity of passers-by. There are many ways and types to realize identity identification, including card identification, password identification, biometric identification and composite identification.
2, sensing and alarm
Sensing and alarm devices include various sensors, detectors, buttons and other equipment, and certain measures should be taken to prevent mechanical damage. Door magnet and exit button are the most commonly used in access control system. All these devices output signals in the form of switches. A well-designed access control system can encrypt or convert the door magnetic alarm signal and the exit button signal.
At the same time, the access control system can also monitor the following alarm states: alarm, short circuit, safety, open circuit, exit request, noise, interference, shielding, equipment open circuit, anti-disassembly, etc. , can prevent artificial shielding and destruction of switch alarm signals, and improve the security of access control system. In addition, the access control system should also have the ability to detect the alarm line in real time (whether the system is in the state of evacuation or protection).
3, processing and control
Processing control equipment usually refers to the controller of the access control system, which is the center of the access control system. Just like the human brain, it stores a lot of information such as card numbers and passwords of relevant personnel, and the importance of these information is obvious.
In addition, the access controller is also responsible for operation and processing tasks, and makes judgments and responses to various access requests, including arithmetic unit, storage unit, input unit, output unit, communication unit and so on. It is the core and the most important part of the access control system.
4, electrical locking and execution
Electric locks and execution units, including various electronic locks, car stops and other control equipment, should be sensitive in action, reliable in execution, have good moisture-proof and anti-corrosion performance, and have sufficient mechanical strength and anti-destruction ability.
There are many types and types of electronic locks, which can be divided into plug-in lock, magnetic lock, cathode lock, anode lock and shear lock according to different working principles, and can meet the installation requirements of various wooden doors, glass doors and metal doors. Each electronic lock has its own characteristics, and there are also differences in safety, convenience and reliability. It is necessary to choose the appropriate electronic lock according to the actual situation.
5. Lines and communications
The access controller should be able to support multiple network communication modes, such as RS232, 485 or TCP/IP. , and use a variety of networking methods in different situations to achieve nationwide or even global system networking. For the overall security of the access control system, communication must be transmitted by encryption, and the number of encryption bits is generally not less than 64.
6. Management and Settings
Management setting unit mainly refers to the management software of access control system, which can run in Windows2000, 2003 and XP, support the working mode of server/client, and authorize and manage the operation functions of different users.
Management software should use large databases such as Microsoft SQL, which has good developability and integration ability. The management software should have the functions of equipment management, personnel information management, badge printing, user authorization, operator authority management, alarm information management, event browsing, electronic map and so on.
Requirements of access control system
1, reliability
The main purpose of access control system is to prevent loss and crime, so it must have high reliability. Reliability design (redundancy design) and reliability management must be implemented at all stages of design, construction and use of access control security system to ensure the high reliability of products and systems.
3. Certificate
In system design, equipment selection, debugging, installation and other links, the relevant national or industry standards and the requirements of public security departments for security technology prevention are strictly implemented. Products have to go through multiple certifications, and there are many typical users, which have been running normally for many years.
3. Safety
Access control security system is used to protect people and property, so the system itself must be safe. On the one hand, it refers to the natural or quasi-natural properties of products or systems, which should ensure the safety of equipment and systems and the safety of operators; On the other hand, the access control and security system should also have the function of preventing vandalism.
4. Function
People's application of access control system is not limited to single entrance control, but also requires that it can be used for access control, attendance management, security alarm, parking lot control, elevator control, building automatic control and so on. In intelligent buildings or wireless cities, various control functions can also be performed, such as linkage control with other systems.