期刊文献+

基于差分光斑中心定位算法的位移传感技术研究 被引量:10

Study on Displacement Sensor Based on Difference Operation Spot Center Location Algorithm
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摘要 光斑中心定位是激光投射式位移传感技术中的关键技术。为了提高激光光斑中心检测的抗干扰性和精确性,在总结了现有的光斑中心定位方法的基础上,对其中的梯度光斑中心定位算法进行分析和改进,提出了一种差分光斑中心定位算法。该算法主要针对强干扰光线下的激光光斑特点,利用差分运算和梯度算子对光斑进行识别与定位。实验结果表明,该算法定位精度高、抗干扰能力强,适合于对恶劣环境下的结构进行长期在线监测。基于该算法的位移传感器设备已成功应用于渝黔高速公路河耳沟大桥的桥梁远程健康监测中。 Spot center location is the key technology of laser projection sensor.To improve the anti-interference and location precision of laser spot center,a new spot center location algorithm is given after analyzing and improving the gradient algorithm based on summarizing of present methods.According to the characters of the laser spot in strong interference,the new algorithm identifies and locates the spot through difference operation and gradient.Experimental results demonstrate the high precision and strong anti-interference of the new algorithm.It is suitable for long-term online measurement in abominable circumstance.So far,the displacement sensor based on the new algorithm has been applied in bridge health monitoring for He'er gou bridge on Yu-Qian expressway successfully.
出处 《传感技术学报》 CAS CSCD 北大核心 2011年第2期215-219,共5页 Chinese Journal of Sensors and Actuators
基金 国家自然科学基金(50808188) 交通部西部建设重大项目(2009318814065) 教育部科学技术研究重点项目(210175) 重庆市科委攻关项目(CSTC2009AC6080) 重庆市教委项目(KJ100425) 重庆交通大学结构工程重庆市重点实验室重点项目(CQSLBF-Z09-7) 重庆交通大学山区道路建设与维护技术重庆市重点实验室(CQMRCM-09-4) 重庆交通大学研究生教育创新基金项目(0903)
关键词 位移传感器 光斑中心定位 激光投射式 梯度 差分运算 displacement sensor spot center location laser projection gradient difference operation
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参考文献13

  • 1Jong Jae Lee,Soojin Cho,Masanohu Shinozuka.Evalution of Bridge Load Carrying Capacity Based on Dynamic Displacement Measurement Using Real-time Image Processing Techniques[J].Steel Structures,2006,6:377-385.
  • 2Robertson.Prediction of Vertical Deflections for a Long-Span Prestressed Concrete Bridge Structure[J].Engineering Structure,2005,27(12):1820-1827.
  • 3Samuel Vurpillot.Daniele Inaudi and Antonio Scano.Mathematical Model for the Determination of the Vertical Displacement from Internal Horizontal Measurement of a Bridge[J].Smart Structure and Materials SPIE,1996,2719:46-53.
  • 4Caslteman K R.Digital Image Processing[M].Beijing:Tshua University Publishing Company,1998:169-176.
  • 5杨耀权,施仁,于希宁,高镗年.用Hough变换提高激光光斑中心定位精度的算法[J].光学学报,1999,19(12):1655-1660. 被引量:56
  • 6Thomas S M,Chan Y T.A Simple Approach for the Estimation of Circular Arc Centre and its Radius[J].Computer Vision,Graphics,and Image Processing,1989,45 (3):362 -370.
  • 7Lyvers E P,Mitchell O R,Akey M L.Subpixel Measurements Using a Moment-based Edge Operator[J].IEEE Transactions on Pattern Analysis and Machine Intelligence,1989,11 (12):1293-1309.
  • 8蓝章礼,闫果,杨小帆,周建廷.基于动态梯度的激光光斑中心定位算法[J].计算机科学,2008,35(8):223-226. 被引量:8
  • 9张奔牛,李星星,宋军,闫果.激光投射式位移传感技术在桥梁挠度检测中的应用研究[J].传感技术学报,2009,22(5):755-759. 被引量:20
  • 10蓝章礼,张奔牛.二维激光图像挠度/位移测量系统的信号预处理[J].传感技术学报,2007,20(3):609-613. 被引量:9

二级参考文献39

  • 1张洁,朱永,谭靖,陈伟民.一种新型连通管式光电液位传感器[J].仪器仪表学报,2004,25(z3):203-205. 被引量:7
  • 2董辉,陈伟民,符欲梅,夏哲.一种激光图像挠度测量方法[J].传感器技术,2004,23(10):63-65. 被引量:17
  • 3杨建春,陈伟民.桥梁结构挠度自动监测技术的现状与发展[J].传感器与微系统,2006,25(9):1-3. 被引量:18
  • 4李万松,苏显渝,李继陶.一种激光三维传感中提高深度分辨率的方法[J].中国激光,1996,23(12):1081-1086. 被引量:4
  • 5Robertson. Prediction of Vertical Deflections for a Long-Span Prestressed Concrete Bridge Structure[J]. Engineering Structure, 2005, 27(12) : 1820-1827.
  • 6Samuel Vurpillot, Daniele Inaudi and Antonio Scano. Mathematical Model for the Determination of the Vertical Displacement from Internal Horizontat Measurement of a Bridge [J]. Smart Structure and Materials SPIE, 1996, 2719:46-53.
  • 7Stanton J F, Eberhard M O and Parr P J. A WeightedStretched-wire System for Monitoring Deflections[J]. Engineering Structure. 2003, 25:347-357.
  • 8Gethin Wyn Roberts, Xiaolin Meng and Alan Henry Dodson. Integrating a Global Positioning System and Accelerometers to Monitor the Deflection of Bridges[J]. Journal of Surveying Engineering, 2004, 2 (65) : 65-72.
  • 9Merkle W J, Myers J J. Use of the Total Station for Load Testing of Retrofitted Bridges with Limited Access[J]. Proceedings of the SHE - The International Society for Optical Engineering, 2004 5391 ( 1 ) : 687-94.
  • 10张奔牛,蓝章礼,周志祥.二维位移/挠度检测和监测装置及方法[P].国家发明专利,ZL200510057473.6.

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