Terminology - Networked Access Control System

With the wide application of building video intercom system in various residential areas, many manufacturers integrate the access control system into the door console in the building video intercom system. The following briefly explains the function and application of the access control system: The access control system has There are two major categories of non-networking and networking systems. Due to its use in building video intercom systems, we mainly introduce networked access control systems.

The networked access control system generally consists of two major components: control equipment (including control software, network controller and access controller) and front-end equipment (including card reader, electronically controlled lock, door magnet and exit button). In the building video intercom system, the network controller, access controller, and card reader are integrated in the doorway host, and the networked lines of the building video intercom system and the computers in the management center form a network, and the transmission of signals uses the building. Visual intercom system signal channel (using RS485 communication protocol). Access control systems used in building video intercom systems generally use inductive ID cards and inductive IC cards. Community cards generally use inductive IC cards to complete (because IC cards have more powerful storage functions, many information can be stored in the card). IC cards currently use LEGIC technology and MIFARE technology. Since the LEGIC technology card is used in the military industry in the initial stage of development, compared to the MIFARE technology card, the sensing distance, reliability, data computing capability, and anti-jamming capability are all stronger than those of the MIFARE technology card. However, due to the price, the MIFARE technology is stuck. There are a lot of applications in practice.

In the integrated door-to-door system of the building intercom system, since the reader part must be on the door host, the door host must have a part dedicated to reading the card. Inductive cards generally use radio frequency technology. Metal objects shield the proximity card and affect the card's sensing. The induction card part of the entrance host must use non-metallic texture to reduce the shielding of the access control card.