Methods and apparatuses for speed and/or position sensing
AssigneeInfineon Technologies AG
InventorsDirk Hammerschmidt, Erich Kolmhofer, Rudolf Lachner
Life of this patent
Estimating the term…
Abstract
A system includes a movable part that is rotatably movable, the movable part comprising a first portion and a second portion; transceiver circuitry configured to transmit a radio signal towards the movable part and to receive a receive radio signal from the movable part; and evaluation circuitry configured to determine a rotational position of the movable part based on the receive radio signal. The first portion of the movable part has a first electromagnetic reflectivity for the radio signal and the second portion of the movable part has a second electromagnetic reflectivity for the radio signal. The first electromagnetic reflectivity differs from the second electromagnetic reflectivity.
Claims21
A system, comprising:
- a movable part that is rotatably movable, the movable part comprising a first portion and a second portion;
- transceiver circuitry configured to transmit a radio signal towards the movable part and to receive a receive radio signal from the movable part;
- and
- evaluation circuitry configured to determine a rotational position of the movable part based on the receive radio signal,
- wherein the first portion of the movable part has a first electromagnetic reflectivity for the radio signal and the second portion of the movable part has a second electromagnetic reflectivity for the radio signal, wherein the first electromagnetic reflectivity differs from the second electromagnetic reflectivity.
Dependencies are inferred from the claim text.