高速单像素相机数据采集系统

彭进业; 金浩强; 石剑虹; 曾贵华

doi:10.3788/OPE.20142204.0837

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高速单像素相机数据采集系统

现代应用光学 | 更新时间：2020-08-13

- 高速单像素相机数据采集系统
- Data acquisition system for high speed single-pixel camera
- 光学精密工程 2014年22卷第4期页码：837-843
- 作者机构：
  
  1. 西北工业大学电子信息学院,陕西西安,710072
  2. 上海交通大学区域光纤通信网与新型光通信系统国家重点实验室上海,200240
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目（No.61170228）()
- DOI：10.3788/OPE.20142204.0837
  中图分类号： TB851.9;TP391
- 收稿日期：2013-07-01，
  
  修回日期：2013-08-20，
  
  纸质出版日期：2014-04-25
- 稿件说明：
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彭进业, 金浩强, 石剑虹等. 高速单像素相机数据采集系统[J]. 光学精密工程, 2014,22(4): 837-843

PENG Jin-ye, JIN Hao-qiang, SHI Jian-hong etc. Data acquisition system for high speed single-pixel camera[J]. Editorial Office of Optics and Precision Engineering, 2014,22(4): 837-843
彭进业, 金浩强, 石剑虹等. 高速单像素相机数据采集系统[J]. 光学精密工程, 2014,22(4): 837-843 DOI： 10.3788/OPE.20142204.0837.

PENG Jin-ye, JIN Hao-qiang, SHI Jian-hong etc. Data acquisition system for high speed single-pixel camera[J]. Editorial Office of Optics and Precision Engineering, 2014,22(4): 837-843 DOI： 10.3788/OPE.20142204.0837.

摘要

研究了在压缩感知基础上发展起来的3D单像素相机的成像机制。基于现场可编程的阵列（FPGA）和FMC子板设计了一种可以代替雪崩光电二极管（APD）单光子探测器的高速3D单像素数据采集系统，以提高现有3D单像素相机系统的数据采集速度、降低系统成本。该系统基于Xilinx公司的FPGA和4DSP公司的FMC126子卡，配合高速光电探测器来实现对光信号的高速采集，同时获得目标物体反射光的光强信息和纵向距离信息，其采样率为5 GS/s、分辨率为10 bit。系统采用脉冲采样模式，最大程度地降低了数据量和计算成本。实验结果表明：在用800 ps半脉宽的脉冲激光器作为光源时，可以得到20 cm以上的纵向分辨率，每次数字微镜阵列（DMD）调制后的采集时间由目标物体的纵向长度决定。该系统也适合激光三维成像，脉冲激光测距等方面的应用。

Abstract

The imaging mechanism of a 3D single-pixel camera based on compressed sensing was explored. A new 3D single-pixel system based on a Field Programmable Gate Array(FPGA) and a FMC plane was design to replace the Avalanche Photo Diode(APD) single photon detector used in exiting 3D single-pixel cameras to collect data and to improve the acquiring speed of imaging. This system was based on a FPGA from Xilinx and the FMC plane from a 4DSP's FMC126 daughter card with high-speed photodetectors and could achieve high-speed optical signal acquisition. It could get the reflected light intensity information and the longitudinal distance information of a target object at the same time with a sampling rate of 5 GS/s and a solution of 10 bit. It used a pulse-sampling mode to minimize the size of data and the computing cost. Experimental results show that the system can get 20 cm or more precise longitudinal resolution when a pulse laser(half-width is 800 ps) is used as the light source

in which the acquisition time of every Digital Micro-mirror Device(DMD) pattern is depend on the longitudinal length of the target object. The system is also can be used in the laser 3D imaging and pulse laser ranging.

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references

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