飞行模拟器成像系统延迟时间检测方法研究

Research on Detection of Delay Time of Imaging System of Flight Simulator

为了检测飞行模拟器成像系统的延迟时间,首次设计了利用PIC单片机进行延迟时间检测的系统;深入分析了模拟器成像延迟的产生原因,并以某型模拟器的成像系统为研究对象,利用该系统对其进行检测,通过单片机与PC机通讯,观察并记录操纵杆与成像计算机亮度信息的变化的采样数据,根据采样程序周期和通讯程序的运行周期15ms,得出系统的延迟时间;解算结果与实际情况相符;此系统成本低、通用性较好,计算精度较高,可达到微秒级,误差较小,还可以为空军提供低成本的测试技术。

First, designing delay time detection system by using PIC MCU to test the delay time ot the imaging system ot flight simulator. In--depth analysis of the causes of the simulator imaging system delay, and study the object to a certain type of simulator imaging system which was detected by this system. Using the MCU and PC communications to observe and record the variation sampling data of joystick and computer brightness information, then the delay time is elicited by the operation cycle of the sampling procedures 79. 6μs and communication procedures 15ms. Calculation result is in accord with the actual situation. This system can also provide low--cost testing technology for the Air Force which is low cost, good is universality, high accuracy, small error and can achieve microsecond level.