基于射频双向通信的汽车无钥匙进入系统设计

将射频技术与汽车电子技术结合,提出一种安全度和舒适性很高的汽车无钥匙进入门禁系统,该系统在无需人为干预的情况下,可对车门进行自动控制.系统分为两个部分：应答器和基站.现详细论述了应答器和基站之间的通信链路,并设计出能实现该链路的硬件和软件,在低功耗的前提下,实现了无钥匙进入系统的功能并给出了该系统相关的实验测试数据.本设计让汽车门禁系统变得更加智能,可作为汽车门禁一个良好的解决方案.

The system of passive keyless entry for car based on RF bidirectional communication

Combining the RF （radio frequency） technology and automobile electronic technology, this paper proposes a passive keyless entry system with high security and comfort. The system can automatically control the door of car without human intervention. There are two parts of this system： transponder and base station. This paper describes in details the communication network of transponder and bas station and designs the hardware and software to complete the network, which assure the system performs under a low-power-consumption condition. Meanwhile, it offers relative test data about the system. This design makes vehicle access control system more intellegent and may be considered a good solution for vehicle access control system.