A PORTABLE ELECTRONIC SCALE FOR WEIGHING VEHICLES IN MOTION
THE PORTABLE ELECTRONIC SCALE CONSISTS OF A PAIR OF WHEEL LOAD TRANSDUCERS AND ASSOCIATED ELECTRONIC RECORDING INSTRUMENTS. THE TRANSDUCERS, EACH OF WHICH IS 50 BY 20 IN. IN PLAN DIMENSIONS AND ONLY SLIGHTLY OVER 1 IN. THICK, ARE SIMPLE IN DESIGN, RUGGED, AND PORTABLE. INERTIAL EFFECTS IN THE TRANSDUCER ARE NEGLIGIBLE, AND THE ELECTRICAL OUTPUT SIGNALS DEPEND ONLY ON THE MAGNITUDE OF THE LOAD APPLIED NORMAL TO THE SURFACE. SINCE ONLY 1 1/2 IN. OF PAVEMENT MUST BE REMOVED, THE TRANSDUCERS CAN BE INSTALLED IN ANY SMOOTH ROADWAY SURFACE INCLUDING RIGID PAVEMENTS AND BRIDGE DECKS. INITIAL INSTALLATION REQUIRES APPROXIMATELY 3 HR, BUT SUBSEQUENT INSTALLATION AT A PREVIOUSLY OCCUPIED SITE REQUIRES ONLY ABOUT 30 MIN. BASIC ELECTRONIC EQUIPMENT HAS BEEN USED IN THE EXPERIMENTAL STAGE OF THE SCALE DEVELOPMENT. SIGNALS ARE DISPLAYED ON AN OSCILLOSCOPE, AND POLAROID PHOTOGRAPHS MADE FOR PERMANENT RECORDS. AN INSTRUMENT SYSTEM WILL RECORD IN DIGITAL FORM ON MAGNETIC TAPE INFORMATION REGARDING DATE, TIME OF DAY, VEHICLE SPEED, NUMBER OF AXLES PER VEHICLE, AXLE SPACING, AND WHEEL WEIGHT. THIS SYSTEM WILL BE OPERATIVE EARLY IN 1966. ANALYSIS OF DATA ON NEARLY 300 DIFFERENT VEHICLES, EACH OF WHICH WAS WEIGHED BOTH STATICALLY BY A CONVENTIONAL LOADOMETER AND WHILE MOVING AT NORMAL ROAD SPEED BY THE PORTABLE ELECTRONIC SCALE, INDICATES THAT STATIC VEHICLE WEIGHT CAN BE ESTIMATED FROM THE WEIGHTS OBTAINED BY THE PORTABLE ELECTRONIC SCALE WITH SUFFICIENT PRECISION FOR PLANNING AND DESIGN PURPOSES. /AUTHOR/
- Record URL:
-
Supplemental Notes:
- Paper sponsored by Committee on Highway Equipment and presented at the 45th Annual Meeting. 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.
-
Authors:
- Lee, Clyde E
- Publication Date: 1966
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 22-33
- Monograph Title: Line-haul trucking costs and weighing vehicles in motion
-
Serial:
- Highway Research Record
- Issue Number: 127
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Axles; Digital computers; Electronic equipment; Loads; Magnetic tapes; Motion; Motor vehicles; Numbers; Oscilloscopes; Photographs; Portable equipment; Recording instruments; Spacing; Transducers; Weight; Weight indicators; Weight measurement; Wheel loads; Wheels
- Uncontrolled Terms: Moving vehicles
- Old TRIS Terms: Digital systems; Electronic devices; Magnetic tape recording
- Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment;
Filing Info
- Accession Number: 00224785
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Oct 17 1994 12:00AM