载人航天器仪表系统红外触摸屏硬件电路设计

Hardware circuit design of infrared touch screen on instrument system of manned spacecraft

为了设计一种满足载人航天器仪表系统具体要求的触摸屏,研究了触摸屏的基本工作原理,选取红外式触摸屏技术应用到载人航天器仪表系统。结合载人航天器仪表系统对触摸屏的设计指标及环境适应性要求,设计了一种全新的结构简单、抗干扰能力强,能适应载人航天器工况的红外触摸屏的硬件电路,并简单介绍了相应的软件算法。对载人航天器仪表系统的显示器分辨率与触摸屏的分辨能力问题进行了研究并进行实验分析,结果表明所选器件能够实现载人航天器仪表系统触摸屏的分辨能力要求。

To design a sort of touch screen,which satisfies the demand of manned spacecraft instrument system,the basic operating principle of touch screen was researched and the infrared touch screen technology was adopted on the manned spacecraft instrument system.The resolution of display and the resolving power of touch screen in the manned spacecraft instrument system were researched and analyzed by some relevant experiments.The experimental results indicate that the chosen device can meet the requirements of resolving power of touch screen on the manned spacecraft instrument system.A new hardware circuit of infrared touch screen,which has simple structure and strong anti-interference ability,was designed according to the design index of touch screen in the manned spacecraft instrument system.A corresponding software algorithm is introduced in this paper.