Method for weighing a vehicle, and measuring system and measuring arrangement therefor
First Claim
1. A method for determining the weight G of a vehicle travelling on a section of road and having a vehicle wheel footprint having its length measured in the direction of vehicle travel during the weight determination of the vehicle, the method comprising:
- employing a weigh-in-motion (WIM) sensor that has a width that elongates in a direction that is substantially parallel to the direction of vehicle travel during the weight determination of the vehicle and that is narrower than the length of the vehicle wheel footprint;
using the WIM sensor in acquiring the wheel load of each wheel (i) as a time function Fi(t) when the vehicle travels along the section of road;
acquiring the speed v(t) of the vehicle as a time function simultaneously with acquiring the wheel load Fi(t) of the wheel (i); and
using the speed v(t) and the change in the speed v(t) over time as weighting of the simultaneously determined wheel load Fi(t) to evaluate the data for determining the weight G.
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Accused Products
Abstract
A method for determining the weight G of a vehicle (1) while the vehicle is travelling on a section (3) of road (4) uses at least one weigh-in-motion (WIM) sensor (5) that is narrower than the length of the footprint of a wheel in the direction of vehicle travel. When the vehicle (1) travels along this section (3) of road (4) both the wheel loads Fi(t) of all the wheels (2) or twin wheels i, and the speed vi(t) of the vehicle (1) during the entire passing are acquired as time functions, and during evaluation of the data for determining the weight G the speeds vi(t) and their change over time are used as weighting of the simultaneously determined wheel loads Fi(t).
25 Citations
18 Claims
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1. A method for determining the weight G of a vehicle travelling on a section of road and having a vehicle wheel footprint having its length measured in the direction of vehicle travel during the weight determination of the vehicle, the method comprising:
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employing a weigh-in-motion (WIM) sensor that has a width that elongates in a direction that is substantially parallel to the direction of vehicle travel during the weight determination of the vehicle and that is narrower than the length of the vehicle wheel footprint; using the WIM sensor in acquiring the wheel load of each wheel (i) as a time function Fi(t) when the vehicle travels along the section of road; acquiring the speed v(t) of the vehicle as a time function simultaneously with acquiring the wheel load Fi(t) of the wheel (i); and using the speed v(t) and the change in the speed v(t) over time as weighting of the simultaneously determined wheel load Fi(t) to evaluate the data for determining the weight G. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A measuring system for determining the weight G of a vehicle while it is travelling on a section of road, taking into account the speed of the vehicle and its changes over time during determination of the weight of the vehicle, the measuring system comprising:
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at least one WIM sensor for installation in the section of road, which WIM sensor is configured for determining data about passing wheel loads F(t) in a time-dependent manner, and wherein the at least one WIM sensor in the direction of travel is narrower than the length of the footprint of a wheel of the vehicle; a device for determining data about the speed v(t) of the vehicle as a time function while the vehicle is travelling on the section of road; and an evaluation unit for evaluating the determined data, the evaluation unit configured for communicating with the WIM sensor and the device. - View Dependent Claims (15, 16, 17)
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18. A measuring arrangement for determining the weight G of a vehicle while it is travelling on a section of road, taking into account the speed of the vehicle and its changes over time during determination of the weight of the vehicle, comprising:
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at least one WIM sensor installed in the section of road, which WIM sensor can acquire passing wheel loads F(t) in a time-dependent manner; a device for determining the speed v(t) of a vehicle as a time function while the vehicle is travelling on the section of road; an evaluation unit for evaluating the determined vehicle weight data and vehicle speed data, the evaluation unit being configured for communicating with the WIM sensor and the device; and wherein the WIM sensor is installed in the road across the direction of travel so that the surface of said WIM sensor is flush with the road surface, and wherein the WIM sensor is narrower in the direction of travel than the length of the footprint of a wheel of the vehicle.
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Specification