【摘要】 在激光三角测距系统中,激光光源是整个系统的关键部件,其功率大小、方向稳定与否,对精度具有直接的影响。本文提出了一种新的光强度自适应控制方法,该方法能够感测物体表面并将激光强度调整到最佳状态。它可以对激光功率、增益(CCD放大系数)以及CCD积分时间这3种要素进行智能控制,大大地提高了光强度调整范围。此外,它通过高性能FPGA进行实时控制,大大提高了控制的速度。因此,即使物体表面状态变化无常也能进行精确的检测。更多还原

【Abstract】 In laser triangulation sensor,laser source is an important part,that its power and direction directly affect on precision.This paper proposes an approach of adaptive controller for light intensity,which measures and checks the surface of subject,and adjusts the laser power to optimal status.Through controlling of laser power,amplifier(amplifier coefficient of CCD)and CCD integral time,enhance range of light intensity adjustment.With FPGA,it can improve the speed of controlling,and adapt to variety of surface.更多还原