G - Physics – 01 – G
Patent
G - Physics
01
G
G01G 19/03 (2006.01) G01G 9/00 (2006.01) G01P 3/36 (2006.01)
Patent
CA 2131697
2131697 9320414 PCTABS00027 Apparatus for weighing a vehicle in motion is provided by employing a plurality of elongated fiber-optic sensors (32) defined by an optical fiber embedded in an encasement of elastomeric material and disposed parallel to each other on the roadway in the path of moving vehicles. Each fiber-optic sensor is provided with contact grid means which can be selectively altered to provide the fiber-optic sensors with sensitivities to vehicular weight different from each other for weighing vehicles in an extended weight range. Switches (24, 26, 28 & 30) are used in conjunction with the fiber-optic sensors to provide signals indicative of the speed of the moving vehicle, the number of axles on the vehicle, weight distribution, tire position, and the wheelbase of the vehicle. The use of a generally N-shaped configuration of switches also provides a determination of the number of tires on each axle and the tire footprint. When switches in this configuration are formed of optical fibers, the extent of light transmission through the fibers during contact with the tires of the vehicle is indicative of the vehicle weight.
Jordon John K.
Laforge John V.
Muhs Jeffrey D.
Tobin Kenneth W. Jr.
Macrae & Co.
Martin Marietta Energy Systems Inc.
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