Design and Implementation of Data Acquisition System for Bridge Health Monitoring

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.