压电传感器测量路面动水压力研究  

Research on piezoelectric sensor measuring pavement hydrodynamic pressure

作　　者：蒋泽民[1,2] 高俊启[1,2] 季天剑[1,2] 盛余祥 张春海 徐姣[4] 

机构地区：[1]南京航空航天大学土木工程系,江苏南京210016 [2]重庆交通大学山区道路建设与维护技术重庆市重点实验室,重庆400074 [3]日照市公路管理局,山东日照276826 [4]南京航空航天大学智能材料与结构航空科技重点实验室,江苏南京210016

出　　处：《传感器与微系统》2012年第4期17-19,共3页Transducer and Microsystem Technologies

基　　金：重庆交通大学山区道路建设与维护技术重庆市重点实验室开放基金资助项目(CQMRCH-08-3);国家自然科学基金资助项目(51078183)

摘　　要：雨天动水压力的存在,不仅造成沥青路面易于出现水损害,加快路面使用性能衰减,而且影响到汽车行驶安全,准确测量动水压力数值的大小是研究其危害的有效途径。介绍压电传感器的基本原理。基于压电传感系统能够保证对结构动态压电数据的连续采集,通过自制的压电传感器和设计的标定与实验方案来分析实时采集的动态压电数据。研究结果表明:动水压力数值随着车速的增大而增加,车速为96 km/h时,动水压力达到0.35 MPa,压电传感器在测量动水压力中的应用将有助于解决或减轻沥青路面的水损害。Existence of hydrodynamic pressure in asphalt pavement will create the water damage in asphalt pavement,accelerate pavement service performance weakening,and have a harmful effect on car running safety.An effective path of researching water damage is to measure hydrodynamic pressure accurately.The fundamental principle of the piezoelectric sensors is briefly introduced.On the basis that piezoelectric sensor system ensures continuous gathering of dynamic piezoelectric data,the homemade piezoelectric sensor is designed,and its calibration and field test are performed to real-time analyze the dynamic data.Experimental results show that the dynamic hydraulic pressure increases with the increment of car＇s speed.The dynamic hydraulic pressure in asphalt pavement is 0.35 MPa while a car moves at the speed of 96 km/h.The application of piezoelectric sensors in measuring hydrodynamic pressure will help to solve or reduce the water damage in pavement.

关 键 词：动水压力 压电传感器 标定 试验 水损害 

分 类 号：TB931[一般工业技术—计量学]