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Title:

ADAPTIVE DIAGNOSTIC SYSTEM PROJECT
Cover of ADAPTIVE DIAGNOSTIC SYSTEM PROJECT

Accession Number:

00759151

Record Type:

Monograph

Availability:

National Technical Information Service

5301 Shawnee Road
Alexandria, VA 22312 United States
Order Number: PB99-113201

Abstract:

This Innovations Deserving Exploratory Analysis (IDEA) project sought to integrate state-of-the-art, off-the-shelf hardware and software components with custom-designed software and hardware interfaces to provide a cost-effective general testing platform for use at the San Francisco Bay Area Rapid Transit District (BART). This Adaptive Diagnostic System (ADS) was to be developed initially to service two particular Units Under Test (UUTs) in the BART Electronic Repair Shop. The project was successful in achieving its main technical objectives. The ADS general framework provided most of the basic features desired. It employed excellent graphical user interfaces, and was capable of providing a rapid and precise automated test of one of the two UUTs. The architecture of the software was developed in such a way that it could be adapted easily to test other UUTs and to incorporate other test instruments. The neural network diagnostic module was developed and refined to the point that it could recognize with high probability waveforms that were discernable by the human eye. Using a single generalized architecture, the module produced neural networks that were trainable to recognize two rather different classes of waveforms associated with the two UUTs: modulated carrier, and transient response to a step function input. Principal development effort was associated with the design of the feature reduction preprocessing functions, and the training and testing software.

Supplemental Notes:

This TRANSIT-IDEA project was conducted by the San Francisco Bay Area Rapid Transit District (BART). Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Contract Numbers:

TRANSIT-2

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Mullerheim, S

Pagination:

26 p.

Publication Date:

1998-8-31

Serial:

TRANSIT-IDEA Program Project Final Report

Publisher: Transportation Research Board

Features:

Figures (16) ; Tables (4)

Uncontrolled Terms:

Automated inspection; Hardware

Old TRIS Terms:

Subject Areas:

Highways; Maintenance and Preservation; Public Transportation; Vehicles and Equipment

Files:

NTL, TRIS, TRB

Created Date:

Dec 30 2003 12:00AM