基于FPGA与DSP的一体化激光三角位移传感器系统

Integrative Laser Triangulation Displacement Sensor System Based on FPGA and DSP

从激光三角传感器的原理出发,设计了一种基于FPGA与DSP的一体化智能激光位移传感器系统,能够在保证位移测量精度的同时简化系统结构、减小系统体积;主要由FPGA控制CCD与激光器的驱动及实现与上位机的通讯,由DSP负责数据的处理从而得到优化的激光强度值及光斑定位信息;重点介绍了FPGA的设计及DSP的算法;最后对系统进行标定,并进行精度实验;实验结果表明,该一体化系统能够在100mm的工作范围内达到10μm的测量精度。

With the principle of laser triangulation sensor, an integrative intelligent laser displacement sensor system was designed based on FPGA and DSP, which can ensure the measuring accuracy and simplify the system structure. The driver of CCD and laser and the communication with upper computer are mainly controlled by FPGA, while the data is processed by DSP to get the position of the facula and the optimized laser intensity. The design of FPGA and algorithm of DSP are emphatically introduced . Finally the system was calibrated and proved by the experiment that it can get the accuracy of 10μm within 100mm measuring range.