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原文传递 Phase 2: Location Tracking of Test Vehicles for Bridge Load Rating.

题名：	Phase 2: Location Tracking of Test Vehicles for Bridge Load Rating.
作者：	D. Callahan; J. Jackson;
关键词：	load bearing capacity,bridges (structures),sensors,optical tracking systems;system testing, laboratory testing, data collection, real time data, data acquisition systems, bridge decks, loading vehicles, system designs, architecture, system components, sys
摘要：	The purpose of this research project is to augment the work of the Phase 1 project, 930-671, which provides the bridge maintenance bureau with tools for load testing of bridges. Currently, the load testing team uses sensors and weighted trucks to load bridges in a controlled fashion. The sensors then collect data from the bridges under load conditions, and from this data the proper bridge rating can be determined. However, the ALDOT load testing team desires to capture the exact position of the load vehicle with respect to the sensor data. In order to accomplish this, they need an additional system which can measure the vehicle position and automatically feed this information into the data acquisition system in real-time. In Phase 1 (project 930-671), the research team developed such a device using an optical tracker which when mounted to the test vehicle, would provide position of the vehicle relative to the road surface. This system provided both tracking and a data readout in cab of the test vehicle. / NOTE: Final rept. / Supplementary Notes: Sponsored by Alabama Dept. of Transportation, Montgomery. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
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