门禁基本常识（Basic knowledge of access control）.doc

门禁基本常识（Basic knowledge of access control） Basic knowledge of access control 1 、 What are the products in the access control system? Access control system contains two parts: (1) the identification of the body: the particular symbol that someone has, as the identification mark, such as the palm print, the fingerprint, the face and so on (2) mark identification: the special marks of external objects are used as identification signs, such as passwords, induction cards, IC cards, etc. 2, what does the access control system contain? It can be divided into 3 parts (1): responsible for receiving the signal, the control host and to identify the signal, open or close an action (2) door lock: lock the door body, unless the power or electricity delivery, otherwise the normal operation should not automatically open the door (3) other accessories: outgoing switch, power supply, etc. 3, what is the power off (power transmission door) (Fail-Secure)? Normal door lock body case, not electricity, and showed the lock state, through the external control system (for example: credit card machine, card reader) the lock is energized, the internal body will play action, and complete the open state, such as the cathode lock. 4. What is power off the door (Fail -Safe)? The normal closed case, the lock body continuous electricity, and showed the lock state, through the external control system (for example: credit card machine, card reader) to lock off, the internal body of an action, and the completion of the open state, such as magnetic lock. 5, power outages open the door, once the power failure is not open the door? Can match the UPS uninterruptible power system, such as the companys RF-7000XX series, even if there is a voltage change, voltage regulator function, coupled with the battery, it can become a constant power system, to prevent the formation of access to power access hole. 6, power off, open the door? Or power off the door? Basically, this is a different question: open the door po