Len Palek for Bob Strommen MnROAD Research Conference October 4, 2011 Latest Technologies in Pavement Testing and Instrumentation
Jan 05, 2016
Len Palek for Bob StrommenMnROAD Research Conference
October 4, 2011
Latest Technologies in Pavement Testing and Instrumentation
Presentation Outline
Dynamic Testing Static Data Collection Sensors Other
MnROAD Dynamic Collection
The Heart of the SystemNational Instruments Model 1052
Combination PXI/SCXI Chassis System
Measurement & Automation Explorer (MAX)
MnROAD Data Collection Version 4
MnROAD Trigger SystemsSoftware Wireless GPS Live Traffic
Optical Beam Manual Switch
The Output
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
Lo
ng
itu
din
al
Mic
rostr
ain
Cell 33
Cell 34
Cell 35April 3, 2009
PPA SBSPPA + SBS
What a Longitudinal Trace Should Look Like..
Trace for a PCC Embedded Strain Gauge
Dynamic CE Data After Noise Reduction
Static Data Collection
CR1000
AVW200 TDR100
SDMX50SPAM16/32AM16/32
Static Data Collection Systems
Campbell Scientific Loggernet
Campbell Scientific CRBasic
The Output
Daily Temperature Data
Instrumentation
Soil PressureHMA and PCC StrainsDeflectionWeigh in Motion
Temperature
Moisture
Frost
Lysimeter
A Little Explanation
All resistive strain gauges work on the principles of the Wheatstone bridge. A Wheatstone bridge is a network of four resistive arms. The circuit is very sensitive to changes within each arm. One or more of these arms can be an active sensing element.
Dynamic Sensors
Asphalt Strain Concrete Strain
CTLASG-152
Dynatest
Tokoyo SokkiPML-60
Dynamic Sensors Cont’d
Soil PressurePavement
Displacement Soil Compression
Geokon 3500 Macro sensor GHSAR 750-250 CTL SCG
Static SensorsTemperature Concrete Strain
Moisture
Decagon 5TECampbell Scientific
CS616/CS635Irrometer
Watermark 200Sensirion SHT-75
Omega THX-20 Geokon 4200
Pavement Monitoring Tools
ALPS 2
ALPS
LISA
Sound Impedance Tube
Questions?