Low-Cost Civil Structure Health Monitoring Using Wireless Sensor Network

This research presents a low-cost, real-time, reliable, and scalable solution for Structural Health Monitoring.(SHM) using an IoT-based multi-node system. The study's objective is to detect identify damages timely andweaknesses in civil structures such as bridges, buildings, dams, which environmental factors, overuse, or natural phenomena may cause. Each sensor node, fabricated NodeMCU, equipped with sensors measuring vibration, shock, tilt, strain, humidity, temperature. data collected by multiple nodes transmitted Amazon Web Services (AWS) cloud platform via Wi-Fi analyzed damage detection predictive maintenance. field testing on pedestrian steel bridge showed over 99% success transmission frequency of 1 second per reading, resulting 18,000 readings 5 hours. With fabrication cost $40 node AWS resources, the proposed highly can operate 15 days without human intervention.