激光三角测量中图像传感器参量自适应控制

在激光三角位移测量中,为了减少由被测物体表面的反射特性以及测量环境的光干扰对测量的影响,提高测量精度,提出了一种新的图像传感器成像参量的自适应控制方法。推导了图像传感器的成像参量,详细地分析了这些参量对位移测量精度的影响,在理论分析的基础上提出了该方法,并通过实验的方法加以验证。结果表明,该方法能够根据外界环境变化自适应调整成像参量,有效地减小环境的干扰,提高位移测量的精度。

Adaptive control method for imaging parameters of image sensor in laser triangulation displacement measurement

The reflection characteristic of the measured object and the obtrusive light of the environment will have strong impacts on the accuracy of the measurement in laser triangulation displacement measurement. This paper gives a deduction of the imaging parameters of an image sensor, makes a detailed analysis of these parameters on the accuracy of measurement, puts forward an idea of improving the accuracy by parameters adjustment and finally proposes a new imaging parameters adaptive control methods. The experimental results show that this method can adaptive adjusts the parameters based on the environment, effectively reduces the environment interference and ultimately improves the displacement measurement accuracy.