US 12,442,667 B2
Inductive position sensor for detecting a linear or angular movement of a conductive target
Gentjan Qama, Munich (DE); Andreas Leo Buchinger, Ilz (AT); Bence Gombor, Ilz (AT); Rudolf Pichler, Ilz (AT); and Harald Hartl, Ilz (AT)
Assigned to Renesas Electronics America Inc., Milpitas, CA (US)
Filed by Renesas Electronics America Inc., Milpitas, CA (US)
Filed on Jun. 16, 2023, as Appl. No. 18/336,253.
Claims priority of application No. 22179580 (EP), filed on Jun. 17, 2022.
Prior Publication US 2023/0408297 A1, Dec. 21, 2023
Int. Cl. G01D 5/20 (2006.01)
CPC G01D 5/2073 (2013.01) [G01D 5/2053 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An inductive position sensor for detecting a linear or angular movement of a conductive target, comprising:
at least one transmitter coil;
at least a first receiver coil and a second receiver coil, wherein the first receiver coil and the second receiver coil have the same shape and are phase-shifted to each other, and wherein the first receiver coil and the second receiver coil have a linear or angular shape and define a detection range of the inductive position sensor;
at least one oscillator for generating a transmitter signal, wherein the transmitter signal is applied to the transmitter coil; and
at least a first conductive target and a second conductive target,
wherein movement of the first conductive target and the second conductive target is limited to the detection range of the inductive position sensor such that:
when the first conductive target and the second conductive target are moved to the first end position, the first conductive target covers a first portion of the at least one transmitter coil without covering the first receiver coil and the second receiver coil; and
when the first conductive target and the second conductive target are moved to the second end position, the second conductive target covers a second portion of the at least one transmitter coil without covering the first receiver coil and the second receiver coil,
wherein the first conductive target and the second conductive target move above the first receiver coil and the second receiver coil along the detection range in the linear or angular movement, and
wherein the first conductive target and the second conductive target each have a linear or angular shape extension of half the detection range of the inductive position sensor and are spaced from each other by half the detection range of the inductive position sensor.