DATA ACQUISITION AND PROCESSING WITH WIRELESS SENSOR NETWORK FOR BRIDGE DAMAGE DETECTION SYSTEM

• Main Author: Fadlankahlil Alifdhyatra, Athar
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/56881
• Institution: Institut Teknologi Bandung

Bridge infrastructure is a vital infrastructure needed in the smooth running of the economy. Damaged bridges can hinder the flow of the country's economic movement. Bridge damage inspection efforts in Indonesia are currently still using manual inspection methods which are inefficient and require large amounts of time, so a bridge damage detection system is needed. One of the solutions developed is to use a Wireless Sensor Network (WSN). In the system, there are sensors that acquire bridge data that is connected wirelessly. These sensors are needed as data that is processed in determining the location of the damage. In this system, there are two sensors used, namely the accelerometer sensor to measure the acceleration of the bridge vibration and the piezoelectric sensor to measure the pressure of passing vehicles. In carrying out their functions, these sensors build the WSN subsystem for the accelerometer sensor and the Weigh-in Motion (WIM) subsystem for the piezoelectric sensor. The bridge vibration acceleration data from several sensors installed is processed at the sensor node to get the natural frequency of the bridge before transmitting it to centralized processing. The passing vehicle pressure data is used to activate the bridge's natural frequency measurement system. The results of testing the implementation of this system show the ability to acquire natural frequency data of the bridge but the error is high in the measurement of the natural frequency of the bridge. In addition, the measurement of vehicle pressure signals and the results of natural frequency measurements can be transmitted to centralized processing in the form of voltage signals from the WIM subsystem and wireless transmission from the WSN subsystem.