| 基于无线传感器网络的桥梁结构健康监测 |
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| 引用本文： | 吉林,丁华平,沈庆宏.基于无线传感器网络的桥梁结构健康监测[J].南京大学学报(自然科学版),2011(1). |
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| 作者姓名： | 吉林 丁华平 沈庆宏 |
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| 作者单位： | 江苏省长江公路大桥建设指挥部;南京大学电子科学与工程学院; |
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| 基金项目： | 江苏省“333”高层次人才培养工程; 江苏省交通科研计划(08Y29-7) |
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| 摘 要： | 对于大跨度桥梁的结构健康监测,传统的人工检测方法存在主观性强,整体性、时效性差等不足.目前广泛使用的有线健康监测在应用中也存在着布线难,系统易受环境影响等困难.利用无线传感器网络技术对桥梁结构健康状态进行监测,不仅保留了有线健康监测的优点,而且弥补了其在应用中的不足.文章首先对整个系统的组成进行了说明,接着分别对无线传感器网络节点以及基站的组成和作用进行了说明.在此基础上,提出温度漂移对无线传感器网络节点的加速度传感器输出的影响,并对如何利用温度补偿技术来校准加速度传感器的输出值进行了探讨,且给出了数据校准前和数据校准后的对比图.接下来,提出节点时钟同步的必要性,并对网络的时钟同步原理进行了探讨.在润扬长江大桥锚索上安装无线传感器网络节点,利用节点采集锚索的振动信息,并将其发送到基站节点.经数据分析可以得出锚索的振动频率,根据振动频率,便可以分析其受力情况,最终可以判断桥梁的结构健康状态.
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| 关 键 词： | 结构健康监测 无线传感器网络 温度补偿 时钟同步 |
A new method for bridge structural health monitoring based on wireless sensor networks |
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| Ji Lin,Ding Hua-Ping,Shen Qing-Hong.A new method for bridge structural health monitoring based on wireless sensor networks[J].Journal of Nanjing University: Nat Sci Ed,2011(1). |
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| Authors: | Ji Lin Ding Hua-Ping Shen Qing-Hong |
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| Institution: | Ji Lin1,Ding Hua-Ping2,Shen Qing-Hong2(1.Jiangsu Provincial Yangtze River Highway Bridge Construction Commanding Department,Taizhou,225321,China,2.School of Electronic Science and Engineering,Nanjing University,Nanjing,210093,China) |
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| Abstract: | For structural health monitoring of large bridges,the traditional manual detection is inadequate because of its strong subjectivity,bad entirety and bad timeliness.The widely used wired health monitoring system also has some problems in the actual applications.For example,it is hard to wire in some area and it is easy to be affected by environment.Using wireless sensor networks in bridge structural health monitoring not only retains the advantage of wired health monitoring system but also makes up for its d... |
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| Keywords: | structural health monitoring wireless sensor networks temperature compensation time synchronization |
| 本文献已被 CNKI 等数据库收录！ |
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