红外触摸屏响应分析及延时优化

对机载多功能显示器红外触摸屏响应时间进行分析和计算,寻找缩短响应时间以便满足用户要求的方法。通过VC++对响应时间进行了计算,根据触摸过程和计算结果,通过提高RS-232的波特率、中断实时接收处理触点数据和合并任务的方法对响应时间进行优化。优化后触摸响应的最大延时时间可缩短约37.5 ms,优化后的延时约为89.5ms。保证了飞行员可以及时得到需要的画面,满足用户需求。

Analysis and optimization of response time in infrared touch display

The response time of infrared touch airborne display is analyzed and tested, and the optimization method of response time is introduced to meet the needs of users.The response time is counted in VC++.According to the touch process and the count result of response time, the response time can be reduced through increasing RS232 signal Baud rate, interrupt method and merging tasks.The optimized response time is 89.5 ms, which reduces 37.5 ms than before.The optimized response time ensures the aviator can see general picture in time.