01023043

Component

https://doi.org/10.3141/1945-13

http://scholar.google.com...eton&publication_year=2006

Quartz piezoelectric weigh-in-motion (WIM) sensors are potentially appealing because of their low sensitivity to temperature fluctuations, according to information gathered from previous installations in other states. These installations also called into question the durability of the quartz sensors. Some sensors stopped producing a signal even though the sensor installation did not exhibit physical distress. After design changes were made, it was necessary to reevaluate the quartz sensor before any major investment in this technology in Texas. This research was undertaken to evaluate the performance and durability of quartz piezoelectric WIM sensors. To perform this evaluation, researchers instrumented two sites with quartz sensors and collected truck weight and sensor condition data to analyze the accuracy and durability of these sensors. The results of this research show that the sensors meet or exceed the weight accuracy specified by the ASTM specification for Type 1 highway WIM systems. The data further show that the truck weights produced by the WIM system are stable over time with minimal variation due to temperature change. There have been no sensor failures or degradation of the installations to date.

01031684

English

pp 109-117

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099536

Print

Figures (9) ; References (3) ; Tables (2)

Accuracy; Durability; Performance; Piezoelectric materials; Quartz; Sensors; Temperature; Weigh in motion

Quartz-piezoelectric weigh in motion sensors

Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Mar 3 2006 11:04AM

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