Design of data acquisition and transmission system for quadrant detector detecting spot position

YANG Zhao-long; CHEN Yun-shan; SHAN Xiao-gang; ZHANG Yan-hua; WU Zhi-yong

doi:10.3788/YJYXS20163101.0080

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Design of data acquisition and transmission system for quadrant detector detecting spot position

Driving and Controlling | 更新时间：2020-08-12

- Design of data acquisition and transmission system for quadrant detector detecting spot position
- Chinese Journal of Liquid Crystals and Displays Vol. 31, Issue 1, Pages: 80-86(2016)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院大学北京,100049
  3. 长春奥普光电技术股份有限公司,吉林长春,130033
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(No.11403064)
- DOI：10.3788/YJYXS20163101.0080
  CLC： TM930.9;TP216+.2
- Received：27 April 2015，
  
  Revised：17 August 2015，
  
  Published：05 January 2016
- 稿件说明：
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杨兆龙, 陈云善, 伞晓刚等. 用于四象限探测器光斑位置检测的数据采集传输系统设计[J]. 液晶与显示, 2016,31(1): 80-86

YANG Zhao-long, CHEN Yun-shan, SHAN Xiao-gang etc. Design of data acquisition and transmission system for quadrant detector detecting spot position[J]. , 2016,31(1): 80-86
杨兆龙, 陈云善, 伞晓刚等. 用于四象限探测器光斑位置检测的数据采集传输系统设计[J]. 液晶与显示, 2016,31(1): 80-86 DOI： 10.3788/YJYXS20163101.0080.

YANG Zhao-long, CHEN Yun-shan, SHAN Xiao-gang etc. Design of data acquisition and transmission system for quadrant detector detecting spot position[J]. , 2016,31(1): 80-86 DOI： 10.3788/YJYXS20163101.0080.

摘要

为了对四象限探测器输出的四路信号进行同步采集传输

本文设计了一套高分辨率、高速率的同步数据采集传输系统。该系统首先以FPGA芯片EP1C12Q240为核心

控制模数转换芯片ADS1274采集数据

数据经过片内FIFO缓存

然后按Camera Link协议将数据打包为3240大小的图像

图像经Camera Link接口传输到PC机

最后使用图像采集卡采集图像数据

并利用MATLAB编写软件实现图像解码与存储。实验结果表明:该系统实现了分辨率为24 bit、采样速率为100 kHz的4通道同步数据采集

其有效分辨率可达18.79 bit

数据传输稳定可靠。满足了数据采集系统高分辨率、高速率的需求

并且该方案也可方便地移植到其他应用中

具有较好的可扩展性。

Abstract

In order to acquire synchronously and transfer four channels signal outputted by quadrant detector

a high-resolution

high-rate synchronous data acquisition and transmission system is designed. Firstly

an FPGA chip named EP1C12Q240 is selected as the core to control the acquisition of AD (ADS1274) and buffer data into FIFO on chip. Then the data is packaged into images consist of 3240 pixels according to Camera Link protocol

and transferred to PC via Camera Link interface. Finally

the images are acquired by image acquisition

decoded using software programmed with MATLAB

and stored in PC. Experimental results show that the system

whose effective resolution is up to 18.79 bit

achieves a resolution of 24 bit

sampling rate of 100 kHz and 4-channel synchronous data acquisition

and can transfer data stably and reliably. The system meets the requirements of high resolution

high sample rate and synchronous acquisition. In addition

it has good scalability and could be ported to other applications.

关键词

Keywords

references

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