用于标定CCD相机的高精度数控LED点光源

郭汉洲; 吴振刚; 宋宣晓

doi:10.3788/CO.20130605.0759

用于标定CCD相机的高精度数控LED点光源

doi: 10.3788/CO.20130605.0759

长春理工大学光电工程学院, 吉林长春 130033

基金项目:

国家大学生创新创业训练计划资助项目(No.2012S13)

详细信息

作者简介:
郭汉洲(1990-),男,吉林长春人,本科,主要从事光电工程方面的研究。E-mail:guohanzhou1@163.com

通讯作者:
宋宣晓

中图分类号: TN312.8;V447.3
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出版历程
- 收稿日期: 2013-08-11
- 修回日期: 2013-10-13
- 刊出日期: 2013-10-10

High precision digital control LED spot light source used to calibrate CCD camera

School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130033, China

摘要

摘要: 介绍了一种以发光二极管(LED)点光源作为相机标定光源的方法。根据LED点光源的特性,用恒流源给LED点光源提供所需的电流,用光照度计测量LED光源的光强度。由ARM单片下位机控制恒流源;通过串行通讯与上位机交换数据;由计算机作为上位机来管理数控恒流源和光照度计;根据所测光度值来调节电流,直到光度达到预想值。实验分析显示:LED点光源作为标定光源可以达到CCD标定的要求,精度也较高,能够很好地自适应控制LED的光照强度,达到了预期的效果,且系统使用方便灵活,性能稳定可靠。
- 标定光源 /
- 发光二极管 /
- CCD /
- CCD相机
Abstract: This paper introduces a method that uses a Light Emitting Diode(LED) point light source as the camera calibration light. According to the characteristics of the LED point light source, a constant current source is used to provide the necessary current and a illuminometer is used to measure the luminance of the LED point light source. The constant current source is controlled by an ARM MCU and its data are exchanged with the host computer through the mode of serial communications. The PC is used as the host computer, and it adjusts the current according to the luminance of the LED point light source until the luminance achieves an anticipated value. Experimental analysis shows that the LED point light source with a higher precision can meet the requirements of the calibration light source, and can adaptively control the luminance of LED well. The system is convenient and flexible, and its performance is stable and reliable.
- calibration light /
- Light Emitting Diode(LED) /
- CCD /
- CCD camera

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[1] 薛旭成,石俊霞,吕恒毅,等. 空间遥感相机TDI CCD积分级数和增益的优化设置[J]. 光学精密工程,2011,19(4):857-863. XUE X CH,SHI J X,LÜ H Y,et al.. Optimal set of TDI CCD integration stages and gains of space remote sensing cameras[J]. Opt. Precision Eng.,2011,19(4):857-863.(in Chinese) [2] 金尚忠,方晓,陈志明. 发光二极管光强的测量[J]. 中国计量学报,1995,1(9):61-66. JIN SH ZH,FANG X,CHEN ZH M. Measurement of light intensity of LED[J]. J. China Institute Metrology,1995,1(9):61-66.(in Chinese) [3] 王宏波. 数控TDI CCD标定光源系统的研究[D].长春:中国科学院长春光学精密机械与物理研究所,2009. WANG H B. Measurement of light intensity of LED [D]. Changchun:Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,2009.(in Chinese) [4] FUMITOMO H,PETER K,STEVEN P,et al.. White light from InGaN/conjugated polymer hybrid light-emittingdiodes[J]. Appl. Phys. Lett.,1997,70(20):2664-2666. [5] 刘亚侠. TDICCD遥感相机标定技术的研究[D].长春:中国科学院长春光学精密机械与物理研究所,2005. LIU Y X. Research on the calibration technique of the TDI CCD remote sensing camera [D]. Changchun:Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,2005.(in Chinese) [6] 谈茜,饶丰,张永林,等. 由多个高斯函数表征的发光二极管光谱模型[J]. 中国光学,2012,5(5):493-498. TAN Q,RAO F,ZHANG Y L,et al.. LED spectral model characterized by several Gaussian functions[J]. Chinese Optics,2012,5(5):493-498.(in Chinese) [7] 胡长奇,张方辉,张静. 新型白光LED的光谱特性和相关结温特性[J]. 发光学报,2012,33(9):939-943. HU CH Q,ZHANG F H,ZHANG J. The spectral and junction temperature properties of new white light LED[J]. Chinese J. Luminescence,2012,33(9):939-943.(in Chinese) [8] 蒋大鹏,赵成久,侯凤勤,等. 白光发光二极管的制备技术及主要特性[J]. 发光学报,2003,24(4):385-389. JIANG D P,ZHAO CH J,HOU F Q,et al.. Fabrication and characteristics of white light-emitting diode[J]. Chinese J. Luminescence,2003,24(4):385-389.(in Chinese) [9] 唐明军,唐慧强,黄金燕. 基于ARM的可编程控制器的硬件设计[J]. 仪表技术与传感器,2006(5):40-41,44. TANG M J,TANG H Q,HUANG J Y. Hardware design of programmable controller based on ARM[J]. Instrument Technique and Sensor,2006(5):40-41,44.(in Chinese) [10] 常铁原,朱桂峰,胡重九. 一种高稳定数控恒流源的设计[J]. 电测与仪表,2010,5(3):59-61. CHANG T Y,ZHU G F,HU CH J. The design of a high stable digitally controlled constant-current source[J]. Electrical Measurement & Instrumentation,2010,5(3):59-61.(in Chinese) [11] 许艳. 照度计的特性及测量误差的定量评价[J]. 现代计量测试,2002,5(3):34-36. XU Y. Quantitative evaluation of the characteristics of illuminometer and the measurement error[J]. Modern Measurement and Test,2002,5(3):34-36.(in Chinese) [12] 高英明,张环月,邹念育,等. 一种多功能照度计的设计[J]. 计算机系统应用,2012,21(3):252-255. GAO Y M,ZHANG H Y,ZOU N Y,et al.. Illuminance meter design with multiple functions[J]. Computer Systems & Appl.,2012,21(3):252-255.(in Chinese) [13] 谢洪波,李韬,李富琳,等. LED背光源中侧发光导光管长度与出光性能的关系[J]. 发光学报,2011,32(9):934-938. XIE H B,LI T,LI F L,et al.. Relationship between the length and emitted light property of side-emitting light pipe in led back light source[J]. Chinese J. Luminescence,2011,32(9):934-938.(in Chinese) [14] 薛旭成,韩诚山,薛栋林,等. 应用双排TDI CCD提高空间推扫遥感相机动态范围[J]. 光学精密工程,2012,20(12):2791-2795. XUE X CH,HAN CH SH,XUE D L,et al.. Increasing dynamic range of space push-broom remote sensing camera by two-row TDI CCD[J]. Opt. Precision Eng.,2012,20(12):2791-2795.(in Chinese) [15] 徐岩,史燕琼. 线扫描缺陷检测系统中的LED光源设计[J]. 光学与光电技术,2011,9(3):28-30. XU Y,SHI Y Q. Design of LED illuminators used in line scan defect inspection system[J]. Optics & Optoelectronic Technology,2011,9(3):28-30.(in Chinese) [16] 赵亚辉,范长江. 组合式发光二极管路灯反射器的设计[J]. 中国光学,2012,5(5):520-524. ZHAO Y H,FAN CH J. Design of combined reflectors used in LED street lamps[J]. Chinese Optics,2012,5(5):520-524.(in Chinese)

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