一种新型射频开关控制卡的设计与实现

The Design and Implementation of a New Kind of Radio Frequency Switch Control Card

传统的射频开关控制卡主要采用通用接口总线进行通信。因通信方式单一,应用范围受到较大的限制。为满足控制卡能在不同主流网络中使用要求,设计以AT91RM9200为核心制作嵌入式硬件平台,在此基础上扩展包括以太网媒质接入控制层接口在内的多种通信接口,同时采用微控制器操作系统第2版本进行灵活有效的软硬件任务调度操作,从而使射频开关控制卡具备高度的功能配置灵活性,实时多任务操作性。实践证明该射频开关控制卡除适用于传统通用接口总线网络外,也能较好地利用以太网等主流网络进行控制信息的收发通信。相比传统射频开关控制卡,应用范围得以有效的扩展。

The traditional Radio Frequency （RF） switch control card mainly communicate by General-Purpose Inter- face Bus （GPIB）. Because of the single communication mode, the application of the card is restricted greatly. In this design to meet the request that the RF switch control card can be used in different mainstream networks, the embed- ded hardware platform at the core of AT91RM9200 is made. On the basis, a variety of communication interfaces such as Ethernet Media Access Control （MAC） interface are added into this platform. Meanwhile Micro COS 2 （txC/OS- 1~ ） is used to do the flexible and effective scheduling of hardware and software task. So the functional configuration flexibility and real-time multitasking operation of this RF switch card can be achieved. By practice it can be proved that the RF switch card not only be suitable for the traditional GPIB bus, but also can be utilize the mainstream net- works including Ethernet to send and receive control information. So compared with the traditional RF switch card, its application range is extended effectively.