二维位置敏感探测器(PSD)自动测试系统  

Design of Automatic Testing System for 2D Position Sensitive Detector(PSD)

作　　者：贾天祥[1] 徐熙平[1] 董文博[2] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]中国科学院空间科学与应用总体部,北京100094

出　　处：《仪表技术与传感器》2012年第10期67-69,共3页Instrument Technique and Sensor

摘　　要：为了实现对大尺寸二维位置敏感探测器(PSD)的性能标定,设计了基于LabVIEW的PSD自动测试系统。驱动步进电机以1 mm步长对PSD光敏面进行扫描,并采集电压值计算激光光斑的位置。应用二元二次多项式法建立光斑位置测量值和实际值的计算模型,由此得出二维PSD非线性校正函数,使测量误差显著减小,较大地扩展了二维PSD的测量范围。In order to realize the characteristic calibration for large-size 2D position sensitive detector,an automatic test system with LabVIEW was designed.Computer with control software sent commands to drive the laser scanning the PSD full surface in 1mm step length.The data acquisition card sampled voltage signals and put them into calculation to get the coordinate position of laser spot.Binary quadratic polynomial correction method was used to calculate the real value of the light spot position and finally got the non-linear correction function of the PSD.From this way,the measurement error was reduced evidently,greatly enlarged the measure range of 2D-PSD.

关 键 词：二维PSD LABVIEW 非线性校正 自动测试系统 

分 类 号：TN247[电子电信—物理电子学]