Smart Sensors for Real-Time Bridge Monitoring

Currently there are no bridge monitoring systems that can work with temporary bridges. Any existing systems are tuned for permanent structures, are not remotely operated, require considerable installation time, and need sophisticated equipment for calibration. Their cost is very high per installation, making it impractical for the large number of Armored Vehicle Launched Bridges (AVLBs) and Line of Communication Bridges (LOCB) deployed. They also use complex and sensitive sensors, like laser fiber optics, that fail in harsh weather conditions and require trained technicians for installation. Thus, a more practical approach (based on years of research developed and demonstrated by Dr. H. GangaRao) is to use simple, rugged sensors, like strain gauges and accelerometers that can provide strain, displacement/tilt, acceleration, and velocity measurements. In combination with specialized, unique algorithms, smart networking, and real-time, remote communications – the system can be simple yet powerful. Additionally, the system will enable multiple bridges to be simultaneously monitored. The demonstrated algorithms were developed from work conducted by Dr. H. GangaRao’s team over the past 10 years, including damage detection methods for the US Army’s AVLBs.