微温脉动仪系统的研究

Research on microthermal measurement

为评价云南天文台抚仙湖太阳望远镜的圆顶视宁度,研制了一种能测量常温、微温脉动的仪器。在天文建筑物附近安放两个微温传感器,可以测量影响天文观测的湍流强度的分布情况。介绍了微温脉动仪器的工作原理,硬件设计,软件设计以及仪器的测试。测试结果表明,该微温测量结果达到了多个传感器响应时间快与同步测量要求,并且微温脉动测量达到约0.01℃的分辨率,常温测量达到0.1℃精度。

For evaluating the dome seeing of the solar telescope at Fuxian Lake of the Yunnan Observatory,an instrument was designed to measure the normal temperature and microthermal fluctuations.In the vicinity of the astronomical building,two microthermal sensors were set up to measure atmospheric fluctuations in the surface layer.The overall structure of the system and the working principle of the microthermal sensor are presented.The hardware design and the software design of the system are introduced.In the end,the microthermal measurement has been carried on at Fuxian Solar Observatory（FSO）.It is proved that the instrument reaches the temperature resolution of^for the microthermal fluctuations and accuracy of for ambient temperature.