Structure Health Monitoring
Preventing failures in civil structures
Description
Monitoring the health of a civil structure is essential for tracking aging, observing any structural change and preventing collapses, especially for structures subject to stress, such as bridges.
With a network of IoT sensors it is possible to set up practically any structure and monitor it remotely 24 hours a day.
The goal is to be able to monitor any structure with an easy-to-install, low-cost battery-powered wireless sensor system. So there is no need to lay wiring, and it is possible to leave devices for years on the structure and collect a large amount of data to model its behavior.
So the characteristics we want to achieve are the following:
· Innovative sensors for measuring all the main parameters of the structure
· High precision
· Competitive prices
· LoRa wireless transmission core
· Battery powered, long life, No wiring
· Ability to observe and understand vibration behavior over time
All of this is to give the opportunity to really have under control the situation of the structures managed, with a negligible cost compared to that of the structure, and so to avoid dangerous failures.
Solution
Move Solutions took up the challenge and developed a line of devices called Deck, that meet all the rumors mentioned.
The best one of these products has an innovative technology patented by Move, for which it is able to measure the displacement of the point where it is applied. It is low noise, low power, with an accuracy equal to that of the interferometric radar (0.01 mm) but with a cost about 100 times lower. It also measures temperature and vibration frequency, and then relates all these data over time. More traditional sensors have also been developed with the same communicative heart such as accelerometers, inclinometers, crackmeters and more.
Summarizing the characteristics:
· Wireless low power LoRa transmission
· Battery powered, low power, 2 years battery life
· Low cost
· Displacement measurement (0.01 mm accuracy)
· Acceleration measurement
· Tilt measurement
· Crack measurement
· Temperature measurement
· Vibration frequency detection
· Nodes-to-gateway communication via LoRa
· Forwarding encrypted data from the 4G gateway to the A2A Network server
· Loading and displaying data on the Move platform
· Advanced data analysis and advanced algorithms
Application
1. Installation of sensors on bridge / building / dam / scaffolding / other, and gateway installation in the area
2. The sensors sample all the time, but when an attention threshold (chosen remotely) is exceeded, they transmit an event of 40 seconds (20 seconds before and after this event)
3. The gateway receives all data and forwards them via 4G cellular connection to A2a Network Server
4. Sensors and gateways are pre-registered in the A2A network server. The received data is authenticated and forwarded via API to the Move database
5. All data land on the Move platform, where it is possible to view it, analyze it, manage it and relate it with advanced algorithms to model the time course of the structure.
The return
Now with this continuous structure health monitoring (SHM), the structural engineers can view the health status of the structure anywhere and at any time. They can be alerted by an alarm for an anomalous event, and can schedule any maintenance or safety measures in advance to avoid excessive aging and collapses of the structures.
Return on investment:
- AVOID EMERGENCIES, LONG CLOSING PERIODS OF THE STRUCTURE AND FAILURES
- EASY INSTALLATION AND MANAGEMENT
- FULL TIME MONITORING ACCESSIBLE FROM ANY DEVICE
- FULL AWARENESS ON THE STATE OF THE STRUCTURE
- AWARENESS OF THE ABOVE STRESS LEVEL
- STRUCTURAL BEHAVIOR MODELING
- MAPPING OF TRAFFIC TYPE AND DENSITY, MAPPING OF STRESS INTENSITY
- SCHEDULED AND CHEAPER MAINTENANCE INTERVENTIONS
- ALARM FOR OVER-THRESHOLD VIBRATIONS
- DATA ANALYSIS AND ADVANCED ALGORITHMS
With the application of this system it is possible to guarantee a top level safety standard with a negligible cost, preventing disasters, saving human lives and optimizing the investments, and having a clear situation of all the structures for which you are responsible.
info@movesolutions.it
