基于WDM的精确定时器及其在冗余技术中的应用

Application of Precise Timing Based on Windows Driver Model in Redundancy Technology

现代军用电子设备和某些控制系统对设备的可靠性要求越来越高。针对此情况利用设备冗余原理,提出一种基于WDM的精确定时器实现设备冗余的方法。利用此方法设计了双冗余CAN总线板卡及其在Windows XP系统下的驱动程序,给出了部分驱动实现细节和相关流程。结果表明该方法可成功实现双CAN接口卡在总线故障情况下的冗余切换,提高了设备可靠性。

The requirement of high reliability in the electronic equipments of modern military affairs and some control systems play a very important role.In order to improve the reliability,a way for redundancy technology based on precise timing program of WDM is proposed.The technology was used for designing double CAN interface card and its driver based on WDM mode in windows XP.It emphasizes on the discussion of software design,including the detail of the WDM design and software flow.Result proves that the design can successfully achieve redundancy switch of double CAN interface card in case of bus error,and improve work reliability of device.