【摘要】 在实验室内搭建了一套光纤动态称重系统,该系统是基于普通单模光纤光栅传感技术。在实验小车经过支撑称重台面的金属弹性体时,将引起弹性体形变,采用光纤光栅传感器监测这一形变。通过分析光纤光栅解调仪采集到的光纤光栅传感信号,反演出实验小车的质量。实验结果表明系统精度优于±3%。该系统采用实时校准光纤光栅传感器基准传感波长方法,消除了环境温度对测量结果的影响,具有自温度补偿功能。更多还原

【Abstract】 In this weigh-in-motion(WIM)research,we introduce a novel design of WIM system based-on fiber Bragg grating(FBG) sensing technology.When a car run over the elastic body,it will cause the deflection variation of the elastic body.By use of FBG sensors,we can measure the deflection of the elastic body to calculate the car’s weight.The method of real-time calibrating primary reference wavelength of FBG was applied in this system to eliminate the influence of the ambient temperature on the measurement result of variation.The experimental results showed that the accuracy of the system is better than ±3%.更多还原