亮度式测温仪自动瞄准系统设计

发布时间：2018-01-19 01:27

  本文关键词： 测试计量仪器 光纤传感器 温度测量 四象限探测器 自动瞄准 双自由度 最小二乘拟合　出处：《光子学报》2015年07期 　论文类型：期刊论文

【摘要】：亮度式测温仪的校准大多采用人工方式,人为影响因素较大且校准重复性较低.为了使测温仪在校准时能够准确自动地瞄准温度灯的瞄准点,采用YG-QP36四象限探测器,设计出双自由度自动瞄准系统的机械运动结构,利用步进电机的自锁和双向精确定位特性,双自由度扫描温度灯的瞄准点.用光纤将电子元器件与高温环境隔离开,减少温度对电子元器件的影响.在800~1 200℃温度范围内采集测温仪的温度-电压数据,并用最小二乘支持向量机进行拟合,测量数据的相对误差小于0.05%,重构均方差为0.019 6.对光斑圆心到坐标原点的距离与电压进行最小二乘拟合,光斑直径测量数据表明,双自由度自动瞄准系统能够提高校准准确度,减小重复校准误差.
[Abstract]:The calibration of luminance thermometer mostly adopts manual method, the artificial influence factor is large and the calibration repeatability is low. In order to make the thermometer accurately and automatically aim at the spot of temperature lamp at school on time. Using YG-QP36 four-quadrant detector, the mechanical motion structure of two-degree-of-freedom automatic aiming system is designed, and the self-locking and bidirectional accurate positioning characteristics of stepping motor are used. Double degree of freedom scanning temperature lamp aiming point. Use optical fiber to separate electronic components from high temperature environment. In order to reduce the influence of temperature on electronic components, the temperature-voltage data of the thermometer are collected in the temperature range of 800 鈩，

本文编号：1442054