论文部分内容阅读
阐述了光电位置敏感器件(Position Sensitive Detector简称PSD)的结构、特点、工作原理;通过系统分析2D-PSD产生的非线性,提出一种采用电桥理论分析2D-PSD产生非线性误差的新方法,这种分析方法较插值算法、神经网络优化法、解析法等都简单地多;采用高精度低温漂高输入阻抗前置放大器、加法器、减法器、除法器等元器件,对改进型的2D-PSD的信号调理电路板进行设计与调试;使用连续发射的激光光源和改进型的2D-PSD,设计了一种三维非接触高精确度的光学测量系统,用于诊断人体皮肤畸形不规则形状的三维物体参数的测量具有很高的应用价值,而且这种高精度新型的光电器件与计算机技术、断层X光摄影技术以及层析技术相结合,可以研制成多种医用设备,对疑难病变,尤其是人体皮肤畸形的多种参数进行早期的诊断,有着非常广阔的应用前景。
The structure, characteristics and working principle of Position Sensitive Detector (PSD) are described. By analyzing the non-linearity of 2D-PSD systematically, a new method of analyzing nonlinearity of 2D-PSD based on bridge theory is proposed , This analysis method is more simple than the interpolation algorithm, neural network optimization method, analytic method and so on; using high precision low temperature drift high input impedance preamplifier, adder, subtractor, divider and other components, the improved 2D-PSD signal conditioning circuit board design and debugging; using continuous emission of laser light source and improved 2D-PSD, designed a non-contact high-precision three-dimensional optical measurement system for the diagnosis of human skin deformity irregularities Shape three-dimensional object parameters measurement has a high value, and this new high-precision photoelectric devices and computer technology, tomography and tomography combined tomography, can be developed into a variety of medical equipment, the difficult lesions , Especially the human dermal deformity of a variety of parameters for early diagnosis, has a very broad application prospects.