RFID读写器与标签的通信可分为两个过程：标签识别过程和标签访问过程。
The communication with RFID reader and tags can be divided into two processes: identification tags and access tags.
在软件方面重点研究了非接触式IC卡读写过程的实现，读写器与上位机的通讯协议设计。
For the software, it mainly studies the implementation of contact-less IC card read-write course, the design of communication protocol between read-write module and host computer.
在RFID系统中只有一个通信频道，数据能够在读写器与标签之间传送但不能在标签与标签之间传送。
In RFID system there is a single communication channel, and messages are exchanged between reader and tags, which are not able to communicate with each other.
同时屏蔽各类RFID读写器之间的不同，方便应用系统的开发，从而在RFID读写器与企业应用系统之间起到中介的作用。
And it can shield the difference between the kinds of RFID readers, and make the developing of enterprise application system more convenient.
介绍了非接触式IC卡智能门禁安全管理系统中的读写器软、硬件设计与服务器端的软件设计。
This paper introduce the software design and hardware design of reader and the software design of server of non-contacted IC card intelligent entrance guard's system.
除此以外，文章还给出了访问控制、读写器管理、数据持久化与定制服务开发等的解决方案。
Besides, the article also presented solutions of access control, reader management, data lasting and custom-made service development etc.
如果很多的标签同时与读写器进行通信，那么冲突就会发生，而且读写器就不能获得标签应答的数据但是能够检测到冲突的发生了。
If many tags communicate with reader simultaneously, a collision occurs, and the reader is not able to capture any answers but it can detects collision happens.
每个“绿盾”内都有与运政管理系统相对应的唯一编号，交通执法部门可以通过车载读写器就可以在50到80米外稳定读取车内“绿盾”的信息。
Every "green shield" has an only serial number registered in operation management system. Traffic police can find out targeted taxi's information within 50-80m through the "green shield".
每个“绿盾”内都有与运政管理系统相对应的唯一编号，交通执法部门可以通过车载读写器就可以在50到80米外稳定读取车内“绿盾”的信息。
Every "green shield" has an only serial number registered in operation management system. Traffic police can find out targeted taxi's information within 50-80m through the "green shield".
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