激光锁定成像在钢轨磨耗测量系统中的应用

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。

Application of laser lock-in imaging in rail wear measurement

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.