激光锁定成像在钢轨磨耗测量系统中的应用  

Application of laser lock-in imaging in rail wear measurement

作　　者：吴柯庆[1] 余学才[1] 吴福华[1] 张蕾[1] 

机构地区：[1]电子科技大学光电信息学院光学工程系,成都610054

出　　处：《激光技术》2012年第3期353-356,共4页Laser Technology

基　　金：国家八六三高技术研究发展计划资助项目(2010AAJ206)

摘　　要：应用图像处理技术进行野外火车钢轨测量实验时,不可避免遇到外界强太阳光的干扰问题。为了能有效消除太阳光的干扰作用,采用了激光锁定成像的方法,通过外接控制电路触发激光器并让电荷耦合器件同步采集图像,运用激光锁定成像原理,获得高质量的钢轨轮廓曲线。通过大量实验验证,激光锁定成像的应用使得钢轨磨耗输出的结果更稳定,而且能够适应较大范围内变化的外界环境光干扰。结果表明,激光锁定成像能保证测量系统的稳定性,从根本上消除测量过程中出现的各种随机误差。When the rail wear measurement is carried out in the wild,the interference from outside strong sunlight is inevitable.In order to eliminate the interference effect of sunlight effectively,a laser lock-in imaging technology was utilized.An external controlling circuit triggered the lasers and CCD image acquisition synchronously,and high quality image was achieved by means of laser lock-in imaging method.Lots of experiments verified that laser lock-in imaging makes the output of the rail wear more stable and adapt to a wide range interference of outside complicated background light.Experimental results show that laser lock-in imaging can guarantee stability of the measurement system,fundamentally eliminating the random measurement errors.

关 键 词：激光技术 背景光 锁定成像 钢轨磨耗 

分 类 号：TN247[电子电信—物理电子学]