摘要
一些飞机的航电系统中,采用LVDS格式传输视频信号,在航电部件的测试的过程中需要测试这类视频信号;每个被测件往往有多路视频输入/输出通道,有些被测件输出的视频还需要叠加显示,针对此问题,设计了一种可以实现多路视频显示、多路视频源输出和视频叠加功能的装置;在测试需求分析的基础上,给出了总体结构和各功能模块的设计方法,编制了相关软件;实际应用表明该装置功能全面,能够完成各类航电部件视频信号的测试任务,证明了所用测试方法的有效性。
Some of aircrafts＇ avionic system uses LVDS video signal on transmission and it＇s necessary to test the signal when we test avi- onic system. Every UUT has multiple I/O channels and some signals of UUT need overlapping display. In order to solve the problem, designing a test system which actualized the function of multi--LVDS signal video display, video resource output and video superposition. On the base of testing requirement analysis, we provide the design scheme of overall structure block and various functions module and a corresponding software has been programmed. Practical application indicates that the system has overall functional and can fulfill the test requirement of video signal of various avionic parts and prove the validity of test way we used.
出处
《计算机测量与控制》
北大核心
2013年第9期2403-2405,共3页
Computer Measurement &Control
