Magnetic long-range position sensor
AssigneeBourns, Inc.
InventorsJay Jamshid Khazaai, Perry Wehlmann, Gregory Scott DePue
Life of this patent
Estimating the term…
Abstract
A magnetic position sensor comprises a first magnetic rod including a first end and a second end, and a second magnetic rod including a third end and a fourth end, the first end and the third end at a first distance, the second end and the fourth end at a second distance greater than the first distance. The magnetic position sensor further includes a magnet configured to travel relative to the first magnetic rod and the second magnetic rod along a first axis, and one or more magnetic sensors communicatively coupled to the magnet.
Claims19
A magnetic position sensor comprising:
- a first magnetic rod including a first end and a second end;
- a second magnetic rod including a third end and a fourth end, wherein the first magnetic rod and the second magnetic rod form a track with a center axis located between the first magnetic rod and the second magnetic rod, the first end and the third end are separated by a first distance, and the second end and the fourth end are separated by a second distance which is greater than the first distance;
- a magnet spaced from the track by a vertical gap and configured to travel along the center axis;
- and
- one or more magnetic sensors communicatively coupled to the magnet, wherein the one or more magnetic sensors include a first magnetic sensor fixed between the first end and the third end, and a second magnetic sensor situated below the track and configured to travel with the magnet.
A position detection system comprising:
- a magnetic position sensor including a track, a magnet, and one or more magnetic sensors, the magnetic sensors configured to provide one or more position signals indicative of a position of the magnet along the track based on a magnetic flux;
- one or more temperature sensors configured to provide one or more temperature signals indicative of a temperature of the track;
- and
- an electronic processor connected to the magnetic position sensor and the temperature sensor, the electronic processor configured to:
- receive the one or more position signals from the magnetic position sensor;
- receive the one or more temperature signals from the one or more temperature sensors;
- and
- determine a position of the magnet based on the one or more position signals and the one or more temperature signals.
Dependencies are inferred from the claim text.