Method and system for reducing errors in vehicle weighing systems
First Claim
1. A method of weighing a vehicle on a plurality of weight-sensing elements and determining vehicle weight to a tolerance of no greater than 0.1% error as measured on a certified scale, the method comprising:
- receiving at a computer at least one set of weighing data for a vehicle that has passed over respective weight-sensing elements;
processing the weighing data within the computer to provide a plurality of mode parameters representing oscillatory modes in the weighing data;
analyzing the plurality of mode parameters for the weighing data within the computer to minimize the error in the weighing data; and
processing the weighing data within the computer to remove data representing the oscillatory modes to reduce the error in the weighing data until the error is 0.1% or less of the vehicle weight; and
providing an output from the computer of a resultant error for observation by a human observer.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and system (10, 23) for determining vehicle weight to a precision of <0.1%, uses a plurality of weight sensing elements (23), a computer (10) for reading in weighing data for a vehicle (25) and produces a dataset representing the total weight of a vehicle via programming (40-53) that is executable by the computer (10) for (a) providing a plurality of mode parameters that characterize each oscillatory mode in the data due to movement of the vehicle during weighing, (b) by determining the oscillatory mode at which there is a minimum error in the weighing data; (c) processing the weighing data to remove that dynamical oscillation from the weighing data; and (d) repeating steps (a)-(c) until the error in the set of weighing data is <0.1% in the vehicle weight.
17 Citations
24 Claims
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1. A method of weighing a vehicle on a plurality of weight-sensing elements and determining vehicle weight to a tolerance of no greater than 0.1% error as measured on a certified scale, the method comprising:
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receiving at a computer at least one set of weighing data for a vehicle that has passed over respective weight-sensing elements; processing the weighing data within the computer to provide a plurality of mode parameters representing oscillatory modes in the weighing data; analyzing the plurality of mode parameters for the weighing data within the computer to minimize the error in the weighing data; and processing the weighing data within the computer to remove data representing the oscillatory modes to reduce the error in the weighing data until the error is 0.1% or less of the vehicle weight; and providing an output from the computer of a resultant error for observation by a human observer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system determining vehicle weight to a tolerance of no greater than 0.1% error as measured on a certified scale, the system comprising:
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a computer input device for reading in weighing data for a vehicle, as the vehicle passes over a plurality of weight-sensing elements; means for processing the weighing data from individual weight sensing elements into a dataset representing a total weight of a vehicle; a first computer program portion executable by a computer for processing the dataset of weighing data to provide a plurality of mode parameters representing oscillatory modes in the data due to dynamic movement of the vehicle during weighing; a second computer program portion executable by the computer for analyzing a plurality of mode parameters for weighing data to minimize the error in the weighing data; and a third computer program portion executable by the computer for processing the weighing data to remove data for oscillatory modes related to movement of the vehicle during weighing and calculating the error in the data set of weighing data until the error is 0.1% or less of the vehicle weight; and a fourth computer program portion executable by the computer for providing an output of a resultant error for observation by a human observer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of weighing a vehicle on a plurality of weight-sensing elements and determining vehicle weight to a tolerance of no greater than 0.1% error as measured on a certified scale, the method comprising:
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receiving at a computer at least one set of weighing data for a vehicle that has passed over respective weight-sensing elements; processing the weighing data within the computer to provide a plurality of mode parameters representing oscillatory modes in the weighing data; determining oscillatory modes in the weighing data each corresponding to a respective frequency of oscillation in the weighing data; and after determining each oscillatory mode, removing the weighing data corresponding to the respective frequency of oscillation; and thereafter, computing the error in the weighing data against a minimum error requirement of 0.1% or less; and if not within the minimum error requirement, determining another subsequent oscillatory mode corresponding to another frequency of oscillation in the weighing data, removing the weighing data corresponding to other frequency and again computing the error in the weighing data against the minimum error requirement; and upon reaching the minimum error requirement, providing an output from the computer of a resultant error for observation by a human observer.
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Specification