Strucutre health monitoring

 Structural health monitoring (SHM) using wireless sensor networks (WSNs) has gained research interest due to its ability to reduce the costs associated with the installation and maintenance of SHM systems. SHM systems have been used to monitor critical infrastructure such as bridges, h

Project Title

Strucutre health monitoring

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

 Structural health monitoring (SHM) using wireless sensor networks (WSNs) has gained research interest due to its ability to reduce the costs associated with the installation and maintenance of SHM systems. SHM systems have been used to monitor critical infrastructure such as bridges, high-rise buildings, and stadiums and has the potential to improve structure lifespan and improve public safety. The high data collection rate of WSNs for SHM pose unique network design challenges.A comprehensive survey of SHM using WSNs outlining the algorithms used in damage detection and localization, outlining network design challenges and future research directions. Solutions to network design problems such as scalability, time synchronization, sensor placement, and data processing are compared and discussed. This survey also provides an overview of testbeds and real-world deployments of WSNs for SH.

Project Objectives

In WSNs for SHM sensors are deployed at various locations throughout a structure. These sensors collect information about their surrounding such as acceleration, ambient vibration, load and stress at sampling frequencies upwards of 100 Hz [5]. Hence, the sensing and sampling rates and amount of collected data are much higher than those in other applications in WSNs; and as a result, WSNs for SHM introduce challenges in network design. Sensor nodes transmit the sensed data to the sink either directly or by forwarding each other’s packets. Data aggregation and processing is necessary for the detection and localization of structural damage and can occur in different locations (e.g., nodes, cluster-heads, and/or central server) depending on the network topology. Typically, damage detection requires the comparison of the structure’s present modal features to those associated with the structure’s undamaged state. Modal features of a structure are mainly represented by the mode shapes – the natural vibration pattern for a given structure.  

Project Implementation Method

Benefits of the Project

TABLE I COMPARISON OF WIRED AND WIRELESS SENSOR NETWORKS

Cost effective

Metric

Cost

Deployment Time

Lifespan

Number of Sensors

Connection Bandwidth 

Data Rate

Sensor Synchronicity

Technical Details of Final Deliverable

WIRELESS SENSOR NETWORKS

In general, SHM requires the installation of a large number of sensors throughout a structure capable of collecting sensed data. The collected data is processed such that decisions about the structure’s overall health can be made. This section provides a comprehensive overview of the components and processes involved in SHM using WSN. This section begins with an overview of commonly sensed structural health parameters and then an overview of the type of sensors used

Final Deliverable of the Project

HW/SW integrated system

Core Industry

Telecommunication

Other Industries

Health

Core Technology

Internet of Things (IoT)

Other Technologies

Robotics

Sustainable Development Goals

Sustainable Cities and Communities

Required Resources

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