Low cost structural health monitoring of bridges using wireless SenSpot sensors.

Details

• Alternative Title:
  Low cost structural health monitoring of bridges using wireless sensors
• Creators:
  Kalantari, Mehdi ; Mirbagheri, Amirhossein
• Corporate Creators:
  University of Maryland (College Park, Md.)
• Corporate Contributors:
  Maryland. State Highway Administration. Office of Policy & Research
• Subject/TRT Terms:
  Bearing Bridge Health Monitoring Bridge Management Systems Bridges Communication Systems Inspection Inspection Equipment Maintenance Management SenSpot Strain Structural Health Monitoring Tilt Wireless Wireless Communication Systems

  More +
• Publication/ Report Number:
  MD-12-SP109B4M
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maryland
• Edition:
  Final report.
• Corporate Publisher:
  Maryland. State Highway Administration
• Abstract:
  Deterioration of highway bridges is a common, yet complex problem. To protect highway bridges, this
  
  project combines a number of recent and emerging technologies – microstructured sensing, ultra-lowpower
  
  wireless communication, and advanced microelectronics – into a novel, small, and lightweight
  
  wireless device known as SenSpot. SenSpot sensors are based on Active RF Technology (ART), which
  
  offers a high performance method for large-scale sensing, wireless synchronization, and ultra low power
  
  wireless communication. To evaluate ART technology, the project investigators studied laboratory and
  
  field performance of SenSpot sensors. In particular, research was conducted to study performance of
  
  SenSpot sensors in accurate measurement of strain and tilt (inclination). Laboratory experiments showed
  
  that although SenSpot sensors operate under extremely tight energy constrains and consume less that 4
  
  microwatts of power, the devices provide a very accurate measurement of strain and tilt. Moreover, field
  
  performance of SenSpot sensors installed on a bridge on I-495 was closely analyzed. They study showed
  
  that SenSpot sensors used to measure tilt on the bridge bearings provide a consistent readout with the
  
  expected change in the orientation of the bearings as a result of thermal expansion/contraction of the bridge
  
  deck; hence, SenSpot sensors provide a reliable remote monitoring tool to detect instances where bridge
  
  bearings could possibly freeze or overturn. Additionally, SenSpot sensors that were used for strain
  
  measurement showed that the device can detect instances when loading conditions of a bridge change or a
  
  structural change in the bridge happens.
  
  
• Format:
  PDF
• Funding:
  SP109B4M
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:6bf2b666259d0fcf213387f3576eb82af3ce79fb77f20723fdbeb5f2e2c95cc383c882cfb44594b9567bbd3703cd367385a0bdc02b94565fb201f63ae4793417
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24363/dot_24363_DS1.pdf
• File Type:
  [PDF - 1.25 MB ]