摘要
研发了基于最优圆拟合原理的非接触性动态位移测试方法及面向对象的可视化软件,采用小型振动台试验进行了应用验证。结果表明:研发的非接触性动态位移测试方法具有良好的标靶圆检测效果,可以完整捕捉标靶点动态位移,位移测试达到亚像素精度;对于不同频率的正弦波输入,非接触性动态位移测试方法识别给出的台面水平位移时程与应变式位移计测试给出的台面水平位移时程的相似度均高于0.98。该技术有效解决了传感器不便布设环境的位移测试、常规物理传感器测试方法的测试点位与位移量程受限的问题,并可避免由于接触对被测体产生的干扰。
A non-contact displacement test method is proposed based on the principle of optimal circle fitting, and the relevant object-oriented visualization software is developed. The proposed method is verified by the shaking table tests. The verification shows that the independently-developed non-contact displacement test method has good performance in circlic detections and displacement tests. The precision achieves sub pixel accuracy. The horizontal displacement of the shaking table measured by the non-contact displacement test method is compared with that by the strain type displacement meter. The comparison shows that the similarity degree of displacement distribution patterns between the above two methods is 0.98. The packaged technique efficiently solves the problem of displacement tests under inconvenient conditions to set up sensors and test range restricted by the traditional displacement test methods, and it may avoid the interference to the measured objects.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2013年第S2期369-374,共6页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金重大研究计划集成项目(91215301)
北京市属高等学校创新团队建设与教师职业发展计划项目(IDHT20130512)
江苏省普通高校研究生科研创新计划项目(CXZZ12_0426)
关键词
最优圆拟合算法
非接触性位移测试方法
小型振动台试验
可视化软件研发
optimal circle fitting method
non-contact displacement test method
small shaking table test
development of visual software
