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动水压力对沥青路面危害很严重,为了测量沥青路面的动水压力,基于光纤Bragg光栅传感原理设计了一种光纤光栅动水压力传感器,介绍了其压力传感原理,推导了该传感器波长与压力之间的关系式。通过室内标定实验,获得该传感器的压力与光栅波长漂移成良好的线性关系,并埋设于某高速公路路面测量了动水压力。试验结果表明,该传感器稳定性好、抗干扰能力强,适用于沥青路面动水压力的测量。
In order to measure the hydrodynamic pressure of asphalt pavement, a kind of fiber grating hydrodynamic pressure sensor is designed based on fiber Bragg grating sensing principle. The principle of pressure sensing is introduced, and the sensor wavelength Relationship with stress. Through indoor calibration experiments, the pressure of the sensor is obtained and the grating wavelength drift has a good linear relationship, and buried in a highway pavement measured hydrodynamic pressure. The test results show that the sensor has good stability and strong anti-interference ability and is suitable for the measurement of hydrodynamic pressure of asphalt pavement.