Electromagnetic noise position sensing
AssigneesToyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
InventorsXiaopeng Li, Taehwa Lee, Kenichi Yatsugi, Michio Yasunishi, Hiroshi Yoshimoto, Takumi J. Jinmon, Hideo Iizuka
Life of this patent
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Abstract
Embodiments described herein relate to a device for detecting the position of electromagnetic noise. The device includes a detector that includes coils that produce voltages in the presence of electromagnetic noise of a defined frequency. The device further includes a controller that senses the voltages and determines a position of the electromagnetic noise relative to the device according to the voltages.
Claims20
A device, comprising:
- a detector that includes coils that produce voltages when electromagnetic noise of a defined frequency is present;
- and
- a controller that senses the voltages and determines a position of the electromagnetic noise relative to the device according to the voltages.
An apparatus, comprising:
- a detector that includes at least four coils arranged into two pairs, the coils produce voltages when electromagnetic noise of a defined frequency is present, the pairs having windings formed in opposing directions;
- and
- a controller that senses the voltages and determines a position of the electromagnetic noise relative to the detector according to a ratio of the voltages as defined by a lookup table, the position indicating a distance and direction from the detector.
A method, comprising:
- in response to receiving a signal that is electromagnetic noise of a defined frequency, determining voltage ratios between coils in a detector by at least sensing voltages from the coils;
- and
- determining a position of the electromagnetic noise relative to the coils and according to the voltage ratios as defined by a lookup table of positions corresponding with different ratios.
Dependencies are inferred from the claim text.