摘要
目的设计基于ARM9(advanced RISC machines)的舱外航天服腕部显示器,提升舱外服信息显示能力。方法系统采用基于ARM9核心的S3C2440A处理器作为主控芯片,同时选用液晶显示屏、电阻式触摸屏、摄像头分别作为信息显示装置、控制装置和视频采集装置。通过编写设备驱动程序和应用程序,在显示器上输出视频图像、文本信息并由触摸屏控制信息的显示。结果根据功能要求设计了系统总体方案,完成了系统软件和显示界面的设计,液晶屏可清晰稳定地显示视频图像和文本信息,触摸屏可灵敏准确地控制信息的显示。结论腕部显示器可以作为改进舱外航天服信息显示系统的一种可行方案。
Objective To design a wrist-mounted display based on advanced RISC machines （ARM9） for the enhancement of EVA spacesuit display ability. Methods In this system, S3C2440A was chosen as the major control chip. Meanwhile, LCD, resistive touch screen and camera were selected for information display unit, control unit and video capture device respectively . Through compiled devices driver and application software, video image and text information were display in LCD which was controlled by the touch screen. Results The overall program was designed according to functional requirements of the system. The design of system software and display interface was accomplished. Video image and text information could be displayed clearly in LCD and touch screen could control the information display sensitively and accurately. Conclusion Wrist-mounted display can be a feasible strategy in improving the information display system of EVA spaeesuit.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2012年第4期282-286,共5页
Space Medicine & Medical Engineering
基金
中国航天医学工程预先研究项目(2009SY54A8004)
