YAO Qin-qin, XIE Rui, BAI Ru, SHEN Yu-ling
(Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China)
Abstract： The device is used for the test on the fuze detonating time according to the initial velocity of the projectile and the altitude and speed of enemy aircraft flight. For the special requirements of the high-speed signal acquisition in the process, the characteristics of the measured signal are analyzed. The system is investigated in chip selection, signal transmission, signal processing, signal storage, post-production PCB design, etc. The appropriate measures and solutions which affect the integrity and accuracy of the signal in each process are proposed. The rules for the layout of the device and wiring are made. The result show that the measurement values are accurate without loss of data.
Key words： high-speed PCB simulation; data acquisition; signal integrity; static storage
CLD number： TP911.7Document code： A
Article ID： 1674-8042（2015）01-0063-05 doi： 10.3969/j.issn.1674-8042.2015.01.012
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高速信号采集系统设计及信号完整性分析
姚琴琴， 谢锐， 白茹， 申玉玲
（中北大学 电子测试技术国家重点实验室， 山西 太原 030051）
摘要： 本装置根据实测弹丸的初速度和敌机飞行高度及航速、 航向对引信的起爆时间进行证测试。 针对中高速信号进行采集的特殊要求， 通过对被测信号的特性分析， 结合系统的实际情况从芯片选择、 传输方式、 信号处理以及后期的PCB设计制作等进行分析。 对每个过程中可能出现的影响信号完整性和精准性的干扰提出相应的预防措施， 对系统PCB中部分关键网络进行仿真， 制定器件的布局布线约束。 实验验证本测量装置可达到精准测量、 无丢失数据。
关键词： 高速PCB仿真； 数据采集存储； 信号完整性； 静态存储
引用格式： YAO Qin-qin, XIE Rui, BAI Ru, et al. Design of high-speed signal a
cquisition system and analysis of signal integrity. Journal of Measurement Science and Instrumentation, 2015, 6(1)： 63-67. ［doi： 10. 3969／j. issn. 1674-8042.2015.01.012］
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