电子器件2017，Vol.40Issue(5)：1204-1208,5.DOI:10.3969/j.issn.1005-9490.2017.05.029
位移传感器数据高精度采集电路设计
Design of High Precision Data Acquisition Circuit of Displacement Sensor
摘要
Abstract
High precision acquisition of displacement transducer data is the key link to realize the position monitoring and controlling of the primary mirror of large telescope. Input requirements of the acquisition circuit, according to which hardwares are designed,are analyzed in detail. The displacement transducer signal is conditioned by scaling and filtering,then inputs to the ADC chip ADS1259 to realize A/D conversion. DSP chip TMS320F28069 is used to read the digital data output by ADS1259,and to sent them to PC for processing and display after decoding. Meanwhile,the CAN bus interface is designed to establish the LAN between distributed acquisition circuit. After testing,the effective resolution can reach 17 bit,and acquisition displacement error less than 2 μm,the relative error is less than 0.01%, the acquisition circuit could collect the displacement transducer signal with high precision,and provides the guarantee and foundation for the telescope primary mirror monitoring and controlling.关键词
位移传感器/数据采集/信号调理/CAN/望远镜Key words
displacement transducer/data acquisition/signal condition/CAN/telescope分类
信息技术与安全科学引用本文复制引用
张斌,栾红民,李玉霞,吴庆林,王晶,曲云昭..位移传感器数据高精度采集电路设计[J].电子器件,2017,40(5):1204-1208,5.基金项目
中国科学院长春光学精密机械与物理研究所重大创新项目专项基金项目( Y3C122E130) （ Y3C122E130）
