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计量学报  2023, Vol. 44 Issue (6): 886-892    DOI: 10.3969/j.issn.1000-1158.2023.06.08
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基于最小二乘法的海洋温度传感器动态响应特性测量不确定度研究
王朋朋1,赵士伟1,孟文蓉1,叶松2
1.中国人民解放军32217部队,山东 烟台 264100
2.国防科技大学 气象海洋学院,湖南 长沙 410073
Research on Measurement Uncertainty of Dynamic ResponseCharacteristics of Ocean Temperature Sensor Based on LSM
WANG Peng-peng1,ZHAO Shi-wei1,MENG Wen-rong1,YE Song2
1. Unit 32217 of the PLA, Yantai, Shandong 264100, China
2. College of Meteorology Oceanography, National University of Defense Technology, Changsha,Hunan 410073, China
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摘要 针对海洋温度传感器动态响应特性测试需求,通过水文传感器时间常数测量装置对典型海洋温度传感器进行了时间常数测试,分析了时间常数特性,并根据测量原理对基于最小二乘法的时间常数测量结果进行了综合全面的不确定度研究。结果表明:时间常数与温度阶跃大小无关,不同类型传感器的时间常数与运动速度满足不同的函数关系,可用该函数关系式表征该传感器的时间常数特性;在0.5~3.0m/s范围内,时间常数测量结果的相对扩展不确定度优于10.2%,与其最大允许误差±10%相当,满足水文传感器时间常数测量装置的性能要求。水槽的温度波动度和均匀性是不确定度的主要来源,营造理想的阶跃环境,保持测试环境工况稳定,能有效减小初始电压和初始时刻引入的不确定度分量,提高动态响应特性的测量精度。研究结果可为海洋温度传感器的研发测试和动态标定技术等提供技术参考。
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王朋朋
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叶松
关键词 计量学海洋温度传感器动态响应特性水文传感器时间常数测量不确定度    
Abstract:According to the requirements of dynamic response characteristics test of ocean temperature sensors, the time constant of typical ocean temperature sensor was tested through the time constant measuring device of hydrological sensor, and the characteristics of time constant were analyzed, the measurement results of time constant based on least square method(LSM) were comprehensively analyzed according to the principle of measuring device. The results show that the time constant has nothing to do with the temperature step, and the time constant and motion speed of different types of sensors meet different functional relations, which can be used to characterize the time constant characteristics of the sensor. Within the range of 0.5~ 3.0m/s, the relative expanded uncertainty of time constant measurement results is better than 10.2%, which is equivalent to the maximum allowable error of ±10%, meeting the performance requirements of time constant measurement device of hydrological sensor. The temperature fluctuation and uniformity of the water tank are the main sources of uncertainty. Creating an ideal step environment and maintaining the stability of the test environment can effectively reduce the uncertainty components introduced by the initial voltage, initial time and time constant, and the measurement accuracy of dynamic characteristics can be improved. The research results can provide technical reference for the development, testing and dynamic calibration technology of ocean temperature sensors.
Key wordsmetrology    ocean temperature sensor    dynamic response characteristics    hydrological sensor    time constant    measurement uncertainty
收稿日期: 2022-04-28      发布日期: 2023-06-25
PACS:  TB942  
基金资助:军队重点技术基础项目(参信\[2020\]7号)
作者简介: 王朋朋(1985-),山东济南人,中国人民解放军32217部队工程师,研究方向为气象水文装备计量测试与保障技术。Email: wpp851118@126.com
引用本文:   
王朋朋,赵士伟,孟文蓉,叶松. 基于最小二乘法的海洋温度传感器动态响应特性测量不确定度研究[J]. 计量学报, 2023, 44(6): 886-892.
WANG Peng-peng,ZHAO Shi-wei,MENG Wen-rong,YE Song. Research on Measurement Uncertainty of Dynamic ResponseCharacteristics of Ocean Temperature Sensor Based on LSM. Acta Metrologica Sinica, 2023, 44(6): 886-892.
链接本文:  
http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2023.06.08     或     http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2023/V44/I6/886
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