摘要
电阻应变传感器种类繁多、应用广泛,在桥梁隧道、建筑、航空航天等行业和领域中多用来对其结构进行监测,而合理评价电阻应变传感器的动态特性就非常重要,讨论分析了电阻应变传感器的特点及相关国内外标准规范对计量特性的描述,针对电阻应变传感器的计量校准现状,论述了一种利用现有的振动计量装置进行电阻应变传感器动态特性校准的方法。该方法以现有的振动标准装置为基础,通过动态信号分析仪分别采集振动台信号和应变传感器信号,并对测量信号进行分析得到动态灵敏度,完成传感器动态特性的校准。通过试验验证了该方法切实可行,重复性较好,最后说明了数据处理过程并评估了传感器动态灵敏度的不确定度。
Resistance strain sensors have a wide range of types and applications and are commonly used in industries such as bridge and tunnel construction,building,aerospace,etc.,to monitor the structural health of various systems.Therefore,it is essential to reasonably evaluate the dynamic characteristics of resistance strain sensors.This article discusses and analyzes the characteristics of resistance strain sensors and the description of metrological characteristics in relevant domestic and international standards and specifications.Considering the current status of metrological calibration of resistance strain sensors,this paper proposes a method for calibrating the dynamic characteristics of resistance strain sensors using existing vibration measuring devices.This method is based on an existing vibration standard device,where a dynamic signal analyzer collects vibration table signals and strain sensor signals,and analyzes the measurement signals to obtain dynamic sensitivity,thus completing the calibration of the sensor's dynamic characteristics.Experiments have verified the feasibility and good repeatability of this method.Finally,the data processing process is explained,and the uncertainty of the sensor's dynamic sensitivity is evaluated.
作者
徐爱华
代国红
胡红波
曾卓
许昊
李天添
徐建华
XU Aihua;DAI Guohong;HU Hongbo;ZENG Zhuo;XU Hao;LI Tiantian;XU Jianhua(Hubei Institute of Measurement and Testing Technology,Wuhan430223,China;School of Physics and Materials Science,Nanchang University,Nanchang 330031,China;Wuhan Seismic Metrological Verification&Surveying Engineering Institute Co.,LTD.,Wuhan 430071,China;Hubei Water Resources Research Institute,Wuhan 430070,China)
出处
《计量科学与技术》
2024年第4期26-30,共5页
Metrology Science and Technology
基金
国家自然科学基金项目(12364019)。
关键词
计量学
计量校准
应变传感器
动态特性
测量不确定度
metrology
metrological calibration
strain sensors
dynamic characteristics
measurement uncertainty
