摘要
文中论述一种IRIG-B(AC)时间码分配器设计,将1路IRIG-B(AC)时间码信号扩展成8路输出到飞机上不同部位的各个设备,主要研究机载环境下将一路IRIG-B(AC)码信号抽引出来,进行增益调节、阻抗匹配等处理后,输出多路相互独立的差分IRIG-B(AC)码信号。该分配器已应用到某型飞机试飞任务中,具有良好的稳定性,能够满足机上测试系统多台高速摄像机及采集记录设备的时间同步需求。
An onboard GPS positioning deviceusually only provides 1~2 IRIG-B(AC)signal output,while the onboard test system requiresmultiple IRIG-B(AC)inputs for multiple data collectors,recorders and cameras to perform time synchronization.This paper discusses a designof IRIG-B(AC)time code distributor,which extends 1 IRIG-B(AC)time code signal into 8 channels to various devices on different parts of the aircraft,mainly involving standard IRIG-B(AC)signal reception in airborne environment,signal processing and multiplex drive output techniques.This distributor has been applied to an aircraft flight test mission,it has good stability,and can meet the time synchronization requirements of multiple high-speed cameras,data collectors and recorders of the on-board test system.
作者
王赞超
蔡磊
冯一鸣
WANG Zan chao;CAI Lei;FENG Yi ming(Chinese Flight Test Establishment,Xi’an 710089,China)
出处
《电子设计工程》
2020年第7期91-94,共4页
Electronic Design Engineering
