基于LabVIEW的LED光强角度分布自动测量实验系统

摘要

In order to improve the accuracy and speed of the LED intensity angular distribution measurement,an auto measurement system has been designed with the combination of LabVIEW and micro chip unit (MCU).The MCU is used as the lower computer to control the stepper motor and the light probe.A PC with the LabVIEW platform is used as the upper computer to send the control instruction and acquire the intensity data,which wil be displayed in graphical format. This system wil not only improve the efficiency of the LED intensity angular distribution measurement,but also provide an open LabVIEW platform,which can let students set up the program diagram to realize the control and data acquirement function.%　　为了提高LED光强角度分布测量的精度和速度，本文通过LabVIEW与单片机系统相结合的控制方式，设计了一套光强角分布自动测量实验系统。该系统利用单片机作为下位机，负责步进电机的转动控制及光强探头的数据采集控制；利用具有LabVIEW平台的微机作为上位机，负责给下位机发送控制指令并记录光强数据，最后以图形方式显示测量结果。该系统不但可以提高LED光强角度分布的测量效率，还提供了一个开放的LabVIEW平台，使学生可以自主搭建完成该实验的控制系统和采集系统的程序框图。