Design and development of data acquisition system for the Louisiana accelerated loading device : final report.
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1992-09-01
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Alternative Title:Design and development of data acquisition system for the Louisiana accelerated loading device.
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Abstract:The Louisiana Transportation Research Center has established a Pavement Research Facility (PRF). The core of the PRF is a testing machine that is capable of conducting full-scale simulated and accelerated load testing of pavement materials, construction, and performance; and to verify mathematical models of mechanistic pavement design procedures.
Instrumentation and data acquisition plays an integral part in the PRF to provide a system for monitoring materials and systems responses due to traffic loads and environmental conditions. These responses are essential for pavement materials characterization and performance evaluation.
The data acquisition system developed for the Louisiana ALD includes a 486 based Personal Computer, plug-in distributed Input/Output board, interface circuit boards, signal conditioning modules, and Graphical User Interface (GUI) software development tools. Menu driven user friendly software, Accelerated Loading Device Instrumentation Software (ALDIS), was developed in C language under Labwindows environment. ALDIS offers attractive GUI features to acquire data from most common types of sensors at various sampling rates, data storage and management in ASCII/Binary format and real-time graphical presentation of the data.
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