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US 9,068,878 B2Granted
Vehicle weight sensor based on wheel rim strain measurements
AssigneeTrimble Navigation Limited
InventorMichael F Cash
Life of this patent
Estimating the term…
Abstract
A vehicle weight sensor is based on wheel-rim stress measurement.
Claims16
A system for measuring vehicle weight comprising:
- a strain sensor including a strain gauge and a radio transmitter that transmits strain data;
- a data receiver including a radio receiver that receives strain data and a processor and memory;
- wherein, the processor uses the strain data to estimate weight on a wheel of the vehicle having a metal wheel rim, and the strain data represents strain in the wheel rim as measured by the strain gauge while the strain gauge is bonded to an outside surface of a bead seat of the wheel rim.
A method for measuring vehicle weight comprising:
- bonding a strain gauge of a strain sensor to an outside surface of a bead seat of a metal wheel rim of a wheel of the vehicle;
- obtaining strain data representing strain in the wheel rim during one or more wheel rotations;
- transmitting strain data from the strain gauge to a data receiver via radio;
- and,
- a processor in the data receiver using the strain data to estimate weight on the wheel of the vehicle.
2 more elements
Dependencies are inferred from the claim text.