摘要
针对液晶式电子水平状态指示仪应用时图形显示速度慢的问题,提出基于嵌入式Linux实时系统的软件设计方案。给出软件设计原则、设计思路和消息机制,并详细分析"贴图"、Linux下进程间通信和多级缓冲等关键技术。对软件运行结果进行分析,软件在帧速率和CPU使用率方面均能达到较好效果,能够满足设计需求。该方案有效提高了电子水平状态指示仪界面显示速度和质量。
The graphic display speed is usually slow in the usage of the LCD Electronic Horizontal Situation Indicator （EHSI）. To solve the problem, we proposed a software design scheme based on the embedded real-time Linux operating system. The design principles, ideas and message mechanism of the software were introduced. The key technologies of paste graphics, Linux Inter-Process Communication （IPC） and multi-level buffers were analyzed in detail. The operating results were analyzed, which showed that the software can reach a good effect both in frame rate and CPU utilization rate and can satisfy the design requirements. The scheme can improve the speed and quality of graphic display effectively.
出处
《电光与控制》
北大核心
2010年第3期84-87,共4页
Electronics Optics & Control
关键词
电子水平状态指示仪
软件设计
进程间通信
多级缓冲
Electronic Horizontal Situation Indicator （EHSI）
software design
IPC
multi-level buffer
