Seismic weigh-in-motion system
First Claim
1. An electronic screening system for determining the weight of a moving vehicle as the vehicle travels along a roadway comprising:
- a sensor system including seismic signal sensor means mounted off-road at a first location and disposed to sense and measure seismic vibrations generated as the vehicle travels along the roadway in the area of said seismic signal sensor means, said seismic signal sensor means disposed to transmit signals proportional to said vibrations;
speed sensing means for measuring the speed of said vehicle and outputting electrical signals representative of said speed;
a processor system including a main processor means mounted at a second location remotely from said first location, said main processor disposed for receiving and processing said signals from said seismic signal sensor means and said speed sensing means to provide a processed output which is representative of the weight of the truck; and
means for conveying said signals from said seismic sensor signal means and said speed sensing means to said main processor means.
1 Assignment
0 Petitions
Accused Products
Abstract
A seismic weigh-in-motion system (12) which utilizes a seismic sensor (32) mounted, off-pavement of the highway prior to the point at which the truck (10) enters the deceleration lane at the truck weighing station. The sensor (32) senses seismic vibrations which are transferred into the ground by the moving truck (10). Signals indicative of these vibrations are transmitted through a fiber optic cable (44) connected to a main processor (42) mounted in the weigh-in station. These vibration signals along with signals proportional to the speed of the truck (determined by speed detecting devices/processes (34, 36)) as the truck moves down the highway is processed in the processor (42) to provide an output which is indicative of the weight of the truck. Additional components such as soil temperature (28) and soil moisture content (30) measuring devices provide additional inputs to the processor (42) to increase accuracy of the system.
19 Citations
9 Claims
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1. An electronic screening system for determining the weight of a moving vehicle as the vehicle travels along a roadway comprising:
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a sensor system including seismic signal sensor means mounted off-road at a first location and disposed to sense and measure seismic vibrations generated as the vehicle travels along the roadway in the area of said seismic signal sensor means, said seismic signal sensor means disposed to transmit signals proportional to said vibrations;
speed sensing means for measuring the speed of said vehicle and outputting electrical signals representative of said speed;
a processor system including a main processor means mounted at a second location remotely from said first location, said main processor disposed for receiving and processing said signals from said seismic signal sensor means and said speed sensing means to provide a processed output which is representative of the weight of the truck; and
means for conveying said signals from said seismic sensor signal means and said speed sensing means to said main processor means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification