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US 12,552,388 B2Granted
Devices and methods of detecting driving conditions from a rotating wheel
AssigneeTDK Corporation
InventorsVibhu Vivek, Ryan Griswold, John Sze
Life of this patent
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Abstract
A sensor assembly may include one or more sensors mountable on a wheel of a vehicle and one or more processors electrically coupled to the one or more sensors for determining a driving condition of the vehicle based on the first sensor signals and the second sensor signals. Methods for determining a driving condition of a vehicle based on sensor signals and a wheel assembly that includes a wheel and the sensor assembly are also disclosed.
Claims19
A method, comprising:
- receiving first sensor signals and second sensor signals from one or more energy harvesting sensors mounted adjacent to a wheel of a vehicle;
- generating a difference waveform via superposition of the first sensor signals and the second sensor signals;
- generating a cross-correlation by cross-correlating the difference waveform with a reference waveform, the reference waveform corresponding to a steady driving condition;
- determining a driving condition of the vehicle based on a maximum value of the cross-correlation;
- generating, based on the determined driving condition, a signal indicating the determined driving condition;
- and
- adjusting operation of the vehicle based on the determined driving condition.
4 more elements
A sensor assembly, comprising:
- one or more energy harvesting sensors mountable on a wheel of a vehicle;
- and
- an electrical component positioned inside of the wheel of the vehicle or a tire on the wheel and electrically coupled to the one or more energy harvesting sensors, wherein the electrical component comprises:
- an analog front end (AFE) circuit configured for:
- obtaining first sensor signals and second sensor signals from the one or more energy harvesting sensors, wherein the one or more energy harvesting sensors include a first sensor for providing the first sensor signals over a first time period and the second sensor signals over a second time period that is distinct from the first time period;
- and
- generating a difference waveform via superposition of the first sensor signals and the second sensor signals;
- an analog-to-digital converter (ADC) configured for generating a digital output corresponding to the difference waveform from the AFE circuit;
- and
- one or more processors configured for:
- generating a cross-correlation by cross-correlating the difference waveform with a reference waveform, the reference waveform corresponding to a steady driving condition;
- determining a driving condition of the vehicle based on a maximum value of the cross-correlation;
- generating, based on the determined driving condition, a signal indicating the determined driving condition and;
- adjusting operation of the vehicle based on the determined driving condition.
11 more elements
Dependencies are inferred from the claim text.