What is the gate? Access control system is introduced

Access control and access control system
One, what is the access control?
Access control, also known as access control management system, channel management system, is a digital and intelligent a management staff and management system.
The original concept of access control system in fact already in our life. For example: we each and every family have installed doors and lock, the men of his own house with the key
When the men came back, home, no need to shout directly with the key to open the door into the door. Outside the visitors, the people in the house heard the knock on the door, know someone visit
The, asked: "who?" Outside the man replied: "I was * * *!" The inside of the people through sound and past experience to judge the door. This is the one
Access the original concept. The Great Wall is China ancient largest primitive access control system.
Two, the entrance guard system types and advantages and disadvantages
Along with the society of electronic intelligent degree of depth, and now we see the access control system based on the input device, medium and method can be divided into different:
Password access control system, card access control system, biometric access control system.
1, the password access control system: the input password, password lock system judge right drive, open the door release.
Advantages: just remember the password, no need to carry other medium, the lowest cost.
Disadvantages: slow, enter the password generally takes several seconds, if too much out of the personnel, the need to queue up. If the input error, also need to re
Input, longer. Poor security, the next person easily through gestures to remember passwords, password is easy to forget or leakage. Trend: the password door
And no occasions less, low cost only in low, requirements for the safety, the use is not frequent occasions. For exam. For example: the safe.
2, card access control system: according to the card type is divided into contact with Carmen guard system (a magnetic stripe card, bar code card) and contactless card (also called radio frequency induction card
Card access control system).
Contact Carmen guard system because the contact card is easy to wear, use a few times, cards are easy to damage, the scope of use has become less and less,
Only in the bank card (card) relevant scenarios, such as: Bank VIP channel access control system, with local unattended ATM access control system
In industry field.
Non contact IC card, due to its durability, good price, read speed, and high security advantages is the mainstream of the current access control system. So, when
Before many people put the non contact IC Carmen guard system referred to as the access control system.
3, biometric access control system: access control system and identification based on human biological characteristics of different. Common are: fingerprint access control system (each
Fingerprint texture feature of human existence difference), palm type device access control system (each person's palm bone shape differences, access control system (IRIS)
Each person's retina by optical scanning differences), face recognition access control system (different facial features and position of each person's) etc..
Advantages are: no need to carry the card and other media, repeat less, not easy to be copied, high safety.
Shortcomings: high cost. Due to the biological recognition ratio of many parameters, matching speed is slow, not conducive to the excessive number of occasions. The human body
Biological characteristics will change along with the change of environment and time, so easy to produce false rejection rate (when this man, but his biological characteristics changed,
And don't think I), such as: fingerprint due to seasonal and dry humidity vary, palm and portrait changes due to the growth of the age, the iris due
Eye illness change etc.. Therefore, biometric access control system is advanced and safe, but the scope of application is limited, only few in number, safety
Demand is high, do not worry about the high cost of a few areas of application, the mainstream is not the current access control system.
Access control system based on the application and different application objects and some derived form. For example: for the parking management system of vehicle access management
For the subway, bus tolling subway entrance guard system etc..