应用AT89C2051作为时序控制、ULN2003作为驱动器的步进电机系统,能够实现根据光强变化而自动切换滤光片的功能,从而保护紫外像增强器.该系统结构简单、性价比高、转动误差小,稍加改动可用于其它光学仪器仪表、光机电一体化系统及单通道多光谱成像系统中.

The steper motor system uses AT89C2051 as a sequential controller and ULN2003 as a driver. Its main function is to switch the ray filters automatically, so as to protect UV image augmentor according to light intensity. The system has the advantages of simple structure, good performance-price ratio and very low running error. With little mend, it could be applied to other instruments such as optical devices, photo electric and mechanical integrative system and single channel multi-spectrum imaging system and so on.