Sensor with shielding element
AssigneeKSR IP Holdings, LLC
InventorsRyan W. Elliott, Zoe Zhu
Life of this patent
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Abstract
A sensor assembly is provided having a first sensor (pedal travel sensor) and a second sensor (motor position sensor). The first sensor having a first coil and a first coupler. The second sensor having a second coil and a second coupler. A shield element is positioned at least partially between the first coupler and the second coupler so as to prevent unwanted interaction between the first coil and the second coil. In one embodiment, the shield element is made of ferrite. In other embodiments, the shield element includes at least one layer of ferrite and at least one layer of aluminum, wherein the shield element include a layer of aluminum sandwiched between two layers of ferrite. More specifically, the shield element is a flux field directional material (FFDM).
Claims23
A sensor assembly comprising:
- a first rotary position sensor measuring a motor rotation having a first coil and a first coupler;
- a second linear position sensor measuring a pedal travel having a second coil and a second coupler;
- wherein the first coil and the second coil are on the same plane and wherein the first coil and the second coil are connected to the same printed circuit board (PCB);
- a shield element positioned at least partially between the first coupler and the second coupler so as to prevent unwanted interaction between the first sensor and the second sensor;
- and
- wherein the shield element is connected to the PCB.
An assembly combining each of a rotary position
- Sensor measuring a motor rotation and a linear position sensor measuring a pedal travel, said assembly comprising:
- a housing rotatably supporting a rotor having a circumferentially extending and multiple pole coupler forming a portion of the rotary position sensor and having a coil;
- a PCB mounted within said housing and including exciting and receiving cons in addition to components for performing signal processing;
- the linear position sensor including a coil and a linear travel coupler mounted to said housing;
- and
- a shielding element connected to the PCB positioned between said cons to reduce interaction between said multi pole rotary coupler and said linear travel coupler.
Dependencies are inferred from the claim text.