As the key equipment for the signal input of the access control system, the access control card reader has always been an important part of the access control system. For a long time, whether in residential areas, hotels, schools, hospitals, companies, banks or government units, access control card readers are closely related to our lives, and it can be applied to any place that requires access control.
Classification of access control card readers
According to the distance of the card reader, it can be divided into contact card reader and non-contact card reader. Card readers are divided into single-interface card readers, dual-interface card readers and multi-cassette contact card readers. From the interface point of view, card readers mainly include: parallel port card reader, serial port card reader, USB card reader.
How does an access control card reader work?
When the card reader is working, it emits electromagnetic waves with a fixed frequency. At present, the receiving frequency of ordinary access control ic cards is generally 13.56 MHZ. When the cardholder needs access control, the access control card should be placed within the electromagnetic radiation range of the card reader. At this time, the induction coil in the access control chip will trigger a current and send a signal to the card reader, which contains the card information of the access control card. After receiving the signal from the card reader, it will not process it by itself, because this signal cannot be set by the card reader. The card reader sends this signal to the access control server, which is the real identification system. After identifying and comparing the information in the server system database, find the matching user information, and send a release instruction to the access control after the comparison is successful.
With the development of society and the improvement of people's safety awareness, the application range of access control system is becoming wider and wider, and the role of access control system in various fields is becoming more and more obvious. In order to meet the needs of access control systems in various occasions, access control will bring users a better and safer experience, and access control technology is also constantly innovating.
Author:Written by Ms.Vivian He from S4A INDUSTRIAL CO.,LIMITED
Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.
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