基于STM32的可调恒温滤光片转轮盒的设计  

The Design of a Programmable Thermostatic Filter Wheel Box Based on STM32

作　　者：徐艺灵 张鸿飞[1] 姜逢欣 陈金挺 陈亚奇 贾明皓 董书成 陈杰[1] 杨臣威 王坚[1] Xu Yiling;Zhang Hongfei;Jiang Fengxin;Chen Jinting;Chen Yaqi;Jia Minghao;Dong Shucheng;Chen Jie;Yang Chenwei;Wang Jian(Department of Modern Physics.University of Science and Technology of China.State Key Laboratory of Nuclear Detection and Nuclear Electronics.Hefei 230026.China)

机构地区：[1]中国科学技术大学近代物理系,核探测与核电子学国家重点实验室,安徽合肥230026

出　　处：《天文研究与技术》2018年第3期323-331,共9页Astronomical Research & Technology

基　　金：国家自然科学基金(11603023,11773026,U1431229);安徽省自然科学基金(1508085MA07);中央高校基本科研业务费专项(WK2360000003);核探测与核电子学国家重点实验室自主课题(WK2030040064)资助

摘　　要：为了满足1.2 m望远镜天文成像系统对科学目标的观测,设计了一个基于STM32控制的可调恒温滤光片转轮盒。转轮盒内有3个转轮,在各自电机驱动下可配合转动,实现最多15个滤光片的自动切换。为确保滤光片的稳定工作波长,转轮盒内置基于PID温控算法的保温系统,以保持转轮盒内部在设定的温度。上位机可通过串口与电控盒进行指令通信,并由电控盒直接驱动转轮电机及加热保温。整个系统结构紧凑,电控安全性好,单片机程序功能完备。最后测试证明该转轮盒在低温-25℃时能正常工作,在恒温模式下能使温度保持在目标温度±1℃以内,长时间工作时性能稳定,切换一次滤光片的用时在10 s以内。n order to satisfy the observation of the astronomical imaging system of 1.2m telescope,a programmable thermostatic filter wheel box based on an STM32 MCU is introduced.The box has three wheels,which can be driven by their respective motor,and 15 optical filters can be switched at most.In order to avoid wavelength drift of the filters,a heat preservation system driven by PID temperature control algorithm is designed to keep temperature stable inside the box.A computer can communicate through serial port with an electronic control box,which is responsible for direct driving for the wheel motor and the heating.In summary,the system is compact-sized with secure electronic control circuit,and fully functioning MCU software.At the end of this paper,results of test show that when it is in the constant temperature mode,the wheel box works well below-25℃,keeping the temperature inside within±1℃around set temperature,and it costs 10s at most to switch filter once.

关 键 词：滤光片切换 STM32 温控算法 电机驱动 

分 类 号：TP232[自动化与计算机技术—检测技术与自动化装置]