摘要
对设备的硬件电路和时序控制进行了优化设计与分析验证,对采集的模拟信号进行运放跟随和RC低通滤波设计,增强了阻抗变换和抗干扰能力,对AD采集进行了抗混叠滤波处理,同时内部采用双口RAM进行数据缓存设计,保证了数据传输的完整性和可靠性,提高了设备的采集精度,经实际测量,采集精度小于±0.5%。
The hardware circuit and timing control of the device were optimized analyzed and verified.The acquired analog signal was subjected to op amp follow-up and RC low-pass filtering design which enhances impedance transformation and anti-interference ability and anti-aliasing for AD acquisition.Filtering processing while internally using dual-port RAM for data buffer design ensured the integrity and reliability of data transmission and improved the acquisition accuracy of the device.After actual measurement,the acquisition accuracy is less than±0.5%.
作者
焦新泉
翟菲
刘东海
JIAO Xinquan;ZHAI Fei;LIU Donghai(State Key Laboratory of Electronic Testing Technology,North University of China,Taiyuan 030051,China;Science and Dynamic Testing of Education Key Laboratory Instrument,North University of China,Taiyuan 030051,China)
出处
《兵器装备工程学报》
CAS
北大核心
2020年第2期139-142,共4页
Journal of Ordnance Equipment Engineering
关键词
抗混叠滤波
阻抗变换
双口RAM
时序控制
数据缓存
RC低通滤波
anti-aliasing filtering
impedance transformation
dual-port RAM
timing control
data buffering
RC low-pass filtering
作者简介
焦新泉(1978—),副教授,主要从事微纳传感及测试技术研究;翟菲(1995—),硕士研究生,主要从事数据采集与存储研究,E-mail:1159561475@qq.com;刘东海(1982—),硬件工程师,主要从事动态测试技术与高速数据采集研究。
