Infrastructure / Structural Health Monitoring

How We Can Help You

Campbell Scientific data-acquisition (DAQ) systems have versatile capabilities that make them ideal for structural health monitoring in a wide range of applications, including simple beam-fatigue, structural mechanics research, and continuous monitoring of large, complex structures. Each system can measure a variety of sensor types, including bonded foil strain gauges, accelerometers, displacement sensors (potentiometer-based, LVDT, and VW) tiltmeters, and temperature sensors.

Our VSPECT® technology provides the highest measurement precision of vibrating-wire sensors available, sensor diagnostics to extend the useful life of the monitoring project, and noise immunity, which eliminates the need for post-processing of vibrating-wire sensor data. Campbell Scientific’s family of data loggers and DAQ systems are currently being used for remote, unattended, and portable monitoring for highway overpasses, roads, buildings, retaining walls, bridges, and amusement park rides. Since 1974, Campbell Scientific has been known worldwide for rugged, accurate, and reliable measurement systems.

Watch the GRANITE™ Extreme Sensitivity video, the GRANITE™ Dynamic Range video, and the GRANITE™ Series Data Acquisition video.

Learn about our patented VSPECT® spectral-analysis technology at our VSPECT® Essentials web resource.

The dynamic vibrating-wire measurement technique is protected under U.S. Patent No. 8,671,758, and the vibrating-wire spectral-analysis technology (VSPECT®) is protected under U.S. Patent No. 7,779,690.

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To see how our systems meet your application needs, review our case studies »


Customize a System

Most of the systems we sell are customized. Tell us what you need and we'll help you configure a system that meets your exact needs.


Automated weather station on Mount Everest

The Same Hardware Installed on Mount Everest

The Campbell Intercept™ CCT AWOS solution is based upon the same weather station hardware that is used to withstand the harshest of conditions on Mount Everest. The weather stations installed on Mount Everest are the highest in the world. Visit the Everest Project web pages to learn more.

Campbell Intercept™

Aviation INTERCEPT software

Campbell Scientific is proud to introduce our newest generation Automated Weather Observing System (AWOS) software, Campbell Intercept™. Campbell Intercept™ combines modern features and functionality with the flexibility and reliability desired by today’s airports. It has been designed to provide International Civil Aviation Organization (ICAO) and World Meteorological Organization (WMO) compliance within a flexible framework that is sensor agnostic, highly configurable, and can be modified to meet local in-country requirements.

Campbell Intercept™ provides web-based clients for many user profiles, including air traffic controllers, meteorological observers, maintenance personnel, and system administrators.

Campbell Intercept™ software can run on Windows or Linux-based operating systems. It has been designed to meet modern aviation stakeholder requirements related to security and software assurance.

Systems



Instrumentation

We offer a variety of products that can be used to create systems for Structural Health Monitoring. Many of the major components used to create these systems are listed below. Please let us know if we can help you configure a system.


More Details about Our Structural Health Monitoring Systems

Data loggers used in Structural Monitoring and Control

The versatility of our data logger systems allows them to be customized for each application. We offer a range of data loggers from the most basic system with just a few channels, to expandable data logger systems that measure hundreds of channels. Scan rates can be programmed from a few hours to 100,000 times per second, depending on the data logger model. Measurement types, recording intervals, and processing algorithms are also programmable. Data loggers not only provide advanced measurement capabilities, but can also control external devices.

On-board processing instruction sets contain programmed algorithms that process measurements and output results in the desired units of measure. For example, data can be displayed as rainflow or level crossing histograms. These rainflow and level crossing algorithms allow processing for extended periods of time, not just a limited number of cycles. The instruction sets also allow for triggered output with pretrigger data capture capability. Triggers can be based on sensor output, time, and/or user control. For example, if an overpass is being monitored, data collection can be triggered by a sensor detecting the approach of a car, an earthquake, pre-programmed times, or by pushing a button.

The control functions of our data loggers combined with their programmability allow them to sound alarms, actuate electrical devices, or shut down equipment based on time or measured conditions. Systems can also call out to phones, pagers, radios, and other devices to report site conditions. Voice-synthesized modems are available, so the system can actually call and tell you what is happening.

Sensors used in Structural Monitoring

Because our data loggers are compatible with nearly every commercially available sensor, you can use the sensors that best meet your application. Typical sensors used for structural and seismic monitoring by our systems include:

  1. Carlson strain meters
  2. vibrating-wire strain gauges
  3. foil strain gauges (set up in quarter, half, or full bridge strain configurations)
  4. inclinometers
  5. crack and joint sensors
  6. tilt sensors
  7. piezoresistive accelerometers
  8. piezoelectric accelerometers
  9. capacitive accelerometers
  10. borehole accelerometers
  11. servo force balance accelerometers

Because our data loggers have many channel types and programmable inputs, all these sensor types can be measured by one data logger. Channel types include analog (single-ended and differential), pulse counters, switched excitation, continuous analog output, digital I/O, and anti-aliasing filter. Using switched or continuous excitation channels, our data loggers provide excitation for ratiometric bridge measurements.

Our configurable data logger models, the CR9000X and CR9000XC, allow you to customize a system with the channel types that best fit your application. The number and type of channels on most of our data loggers are expandable using multiplexers and other measurement peripherals. Our data loggers have input resolutions to 0.33 microvolts, allowing strain measurements with a resolution of a single micro-strain.

Communications

The availability of multiple communications options for retrieving, storing, and displaying data also allows systems to be customized to meet exact needs. On-site communication options include direct connection to a PC or laptop, PC cards, storage modules, and data logger keyboard/display. Telecommunication options include short-haul, telephone (including voice-synthesized and cellular), radio frequency, multidrop, and satellite.

Software

Our Windows-based software simplifies data logger programming, data retrieval, and report generation. The data logger program can be modified at any time to accommodate different sensor configurations or new data processing requirements.

Example Application: Monitoring an Overpass

Campbell Scientific's monitoring systems are used for a variety of structural and seismic applications. Monitoring possibilities on an overpass include:monitoring an overpass

Case Studies

Canada: Structural Health Monitoring of an Overpass
GKM Consultants was contracted by a nationally leading engineering firm to develop, commission, and install......read more
Kentucky: Dam Repair
The Wolf Creek Dam near Jamestown, Kentucky, was constructed partially as a regular concrete hydroelectric......read more
Nova Scotia: Monitoring Bridge Performance for Future Projects
The Confederation Bridge is one of the world's longest continuous pre-stressed-concrete, box-girder, bridges built over......read more
England: Monitoring Bridge Deck Movement
Ten Campbell Scientific CR10X dataloggers were used to monitor movement during the repair of the......read more
Florida: Crack Monitoring at a Historic Site
The Castillo de San Marcos National Monument, St. Augustine, Florida, is a 17th Century historic,......read more
North Wales: Bridge Load Monitoring
Following an inspection a decade ago, the Welsh Office was advised to reduce the allowable......read more
Space Research: Joint Damping Experiment
The Space Shuttle Endeavor carried the CR10 and CR9000 data loggers into orbit as part......read more
United Kingdom: Concrete Performance Research
In an effort to study the performance of concrete floors in large warehouses and distribution......read more

Frequently Asked Questions

Number of FAQs related to Structural Health Monitoring: 1

  1. Most Campbell Scientific systems are built from individual components. This provides maximum flexibility for our customers, but it does not lend itself to pricing a "typical" system. Contact Campbell Scientific for assistance in pricing a system to meet the unique needs of the application.

Related Integrators

The following is a list of companies that have developed expertise in our products and provide consulting, installation, and other services for structural health monitoring applications.


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