桥梁健康监测数据采集系统的设计与实现

Design and Implementation of Data Acquisition System for Bridge Health Monitoring

摘要: 桥梁工程健康与否直接影响交通运输网的正常运行，甚至威胁人民的生命和财产安全，因此，对桥梁进行健康安全监测具有十分重要的社会价值。数据采集是桥梁健康监测系统的关键，是对桥梁进行健康评估的基础。本文基于NI ELVIS II硬件平台和图形化编程语言Labview，开发了桥梁监测的数据采集系统。该系统采集了环境温度、风速、桥梁的应变响应、倾斜姿态、振动响应等信息，并通过Labview编写的监测界面进行数据显示。本文对数据采集系统的软硬件设计进行了详细介绍。试验测试结果表明，本系统具有实时性强、操作简单等特点，不失为桥梁健康监测系统的研究提供了一种有益尝试。

Abstract: Whether the bridge is health or not directly affects the normal operation of the transportation networks, even threatens the safety of people’s life and property. Therefore, the health monitoring of the bridge has a very important social value. Data acquisition is the key to the bridge health monitoring and the basis of the bridge health diagnosis and assessment. A data acquisition system based on NI ELVIS II hardware platform and Labview is developed. It can acquire the environment temperature, wind speed, strain response, tilt posture, vibration response of bridge. Those data are displayed on the monitoring interface which compiled by Labview. The software and hardware implementation of the data acquisition system are introduced in detail. The test results show that the system features the characteristics such as real time capability, simple operation and so on, which may be a useful try for designing bridge health monitoring system in the future.