Access Control Card Reader

What is an access control card reader

The non-contact IC card (inductive IC card) card reader that is disabled by the door is an important part of the access control system and the key device for the signal input of the access control system. If the access control system is compared to a person, the card reader is like a person's Eye. It is related to the stability of the entire access control system. If an access control system controller and electric lock are both good, if there is a problem with the quality of the card reader, it will also cause the door to not be opened, which will affect the acceptance and use of the project.

Classification of card readers: 

1.The card reader is divided into two halves from the distance of the card reader, the contactless card reader,

2.The card reader can be divided into IC card reader and ID card reader from the type of card reader. IC card reader is a kind of non-contact IC card reader, which is connected to PC through USB interface. Power supply or support, the access function of the radio frequency card of its access port. card issuing system.

How the Card Reader Works：

The card reader emits electromagnetic waves at a fixed frequency. The frequency is generally 13.56MHZ. When the induction card enters the electromagnetic wave radiation range of the card reader, it will trigger the coil on the induction card, generate current and trigger the antenna on the induction card to read the card. The card reader transmits a signal with card information, the card reader converts the level signal into a digital serial number and transmits it to the local controller. The local controller uploads the information to the upper controller, and finally uploads it to the access control server. The server compares the card number with the information in the database to obtain all the card information.

什么是门禁读卡器

 门禁用的非接触 IC 卡（感应式 IC 卡）读卡器是门禁系统的重要组成部分，是门禁系统信号输入的关键设备，如果把门禁系统比做一个人的话，读卡器就好比人的眼睛。关系着整个门禁系统的稳定性。如果一个门禁系统控制器和电锁都不错，如果读卡器的质量有问题，同样会引起门打不开等情况，影响工程的验收和使用。

读卡器的分类：

1.读卡器从读卡器的距离分为两半，非接触式读卡器，

2.读卡器从读卡器的类型可分为IC读卡器和ID读卡器。 IC读卡器是一种非接触式IC读卡器，通过USB接口与PC连接。供电或支持，其接入端口射频卡的接入功能。发卡系统。

读卡器的工作原理：

读卡器以固定频率发射电磁波。频率一般为13.56MHZ。当感应卡进入读卡器的电磁波辐射范围时，会触发感应卡上的线圈，产生电流，触发感应卡上的天线进行读卡。读卡器发送带有卡信息的信号，读卡器将电平信号转换为数字序列号并传输给本地控制器。本地控制器将信息上传到上位控制器，最后上传到门禁服务器。服务器将卡号与数据库中的信息进行比较，得到所有的卡信息。