摘要
针对以往车载监控系统存在较大延时的缺点,设计一种实时宽带车载监控系统。该系统通过在32位ARM微处理器中选用可抢占内核和O(1)调度器的Linux2.6.13操作系统,以直接修改Linux内核的方式,从线程化中断、自旋锁可抢占两方面提高系统的实时响应性。测试表明,此系统的数据传输实时性和带宽可以满足车载监控的要求。
A real-time wide-band vehicle monitoring system was designed in view of the long time delay of former vehicle monitoring system.The Linux2.6.13kernel of O（1）scheduler and preemption in the 32bits ARM microprocessor is selected.In order to improve real-time responsiveness,the kernel is modified directly by means of threaded interrupt and preemptive spin lock.It is demonstrated that the real-time performance and the band width of this system can satisfy the request of vehicle monitoring system.
出处
《现代电子技术》
2010年第15期173-176,共4页
Modern Electronics Technique
基金
中国博士后科学基金资助项目(20080441159)
陕西省自然科学基础研究计划资助项目(2007F11)
长安大学科技发展基金资助项目(07Z09)
