| 基于FPGA的PSD多路光电数据采集系统设计 |
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| 引用本文： | 杨海马,傅思勇,王建宇,胡以华,刘瑾.基于FPGA的PSD多路光电数据采集系统设计[J].仪表技术与传感器,2012(8):48-50. |
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| 作者姓名： | 杨海马 傅思勇 王建宇 胡以华 刘瑾 |
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| 作者单位： | 上海理工大学光电学院;中科院上海技术物理研究所 |
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| 基金项目： | 中科院上海技术物理研究所“所创新项目”(Q-ZY-14) |
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| 摘 要： | 以EP2C8Q208C8为主控芯片,利用AD73360进行多路、同步模数转换,对两维PSD传感器信号进行数据采集,实现高精度的多路光电数据采集系统设计。通过硬件编程,系统能够实现4路、64 kHz、12位有效数据位、16位分辨率的光电信号获取,经FPGA运算后实时输出入射光位置,完成光电位置探测功能。试验数据表明:系统位置探测分辨率优于10μm,系统响应时间小于5 ms,适用于快速、同步光电信号获取设计中,为有类似需求的PSD后续处理电路应用提供了一种可供借鉴的技术参考。
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| 关 键 词： | FPGA 两维PSD AD73360 数据采集系统 |
Design of Multi-Channel Synchronized Photoelectric Acquisition System Based on PSD Sensor and FPGA |
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| YANG Hai-ma,FU Si-yong,WANG Jian-yu,HU Yi-hua,LIU Jin.Design of Multi-Channel Synchronized Photoelectric Acquisition System Based on PSD Sensor and FPGA[J].Instrument Technique and Sensor,2012(8):48-50. |
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| Authors: | YANG Hai-ma FU Si-yong WANG Jian-yu HU Yi-hua LIU Jin |
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| Affiliation: | 1(1.School of Optical Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;2.Shanghai Institute of Technical Physics of the Chinese Academy of Sciences,Shanghai 200083,China) |
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| Abstract: | A photoelectric data acquisition system was designed.The master chip used EP2C8Q208C8 and the analog-to-digital chip was AD73360.When photo-currents emerged from a 2D-PSD sensor,these multi-channel signals were changed into voltages.Then these voltages were converted to 16-bit datum by AD73360.All data operated by FPGA,the position of the incidence ray point on the 2D-PSD will be achieved.After analyzing the result of experiment,the whole system is capable of 4-route synchronized acquisition,64 kHz max sampling,12-bit real precision and 16-bit resolution.The real resolution of ray point on the PSD is 10 μm,and the time response is less than 5 ms.This system is suit to the application of high-speed,synchronized photoelectric detection or other fields that need data acquisition. |
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| Keywords: | FPGA 2D-PSD AD73360 data acquisition system |
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