本文对应用于焊缝跟踪的结构光视觉传感器进行分析，包括传感器硬件系统结构误差、激光散斑噪声误差及镜头畸变误差等，并对不同结构方式下的视觉传感器建立了数学模型，具体分析了结构参数对其误差的影响，提出了结构光视觉焊缝跟踪传感器优化设计方法，对使用结构光的工作者减少误差非常有用-The corresponding for seam tracking of structured light vision sensor is analyzed, comprising the sensor hardware system structure error, laser scattered speckle noise error and lens distortion error, and visual sensors for different kinds of structure, established mathematical model, makes a concrete analysis of the influence of structure parameters on the error, the structure light vision seam tracking sensor optimization design method, the use of structured light workers reduce error is very useful,