Sensor system
AssigneeTK Holdings Inc.
InventorsJialou Hu, Scott Kerby
Life of this patent
Estimating the term…
Abstract
A sensor system includes an electrically conductive surface and an air coil in proximity to the electrically conductive surface. The air coil includes a first coil and a second coil. The first coil forms a wire winding pattern having a cross section perpendicular with the cross section of a wire winding pattern of the second coil. The sensor system also includes a controller electrically coupled to the air coil and configured to sense a change in impedance of the air coil due to relative movement between the air coil and the electrically conductive surface. The sensor system also includes a safety device electrically coupled to the controller.
Claims20
A sensor system, comprising:
- an electrically conductive surface;
- an air coil in proximity to the electrically conductive surface and comprising a first coil and a second coil, the first coil forming a wire winding pattern having a cross section perpendicular with the cross section of a wire winding pattern of the second coil;
- a controller electrically coupled to the air coil and configured to sense a change in impedance of the air coil due to relative movement between the air coil and the electrically conductive surface;
- and
- a safety device electrically coupled to the controller.
An air coil, comprising:
- a first coil;
- and
- a second coil, the first coil forming a wire winding pattern having a cross section perpendicular with the cross section of a wire winding pattern of the second coil;
- wherein the air coil is in proximity to an electrically conductive surface and is electrically coupled to a controller configured to sense a change in impedance of the air coil due to relative movement between the coil and the electrically conductive surface, and wherein the controller is electrically coupled to a safety device.
A sensor system, comprising:
- an electrically conductive surface;
- an air coil in proximity to the electrically conductive surface and comprising a first coil and a second coil, the first coil forming a wire winding pattern having a cross section perpendicular with the cross section of a wire winding pattern of the second coil;
- and
- a controller electrically coupled to the air coil and configured to sense a change in impedance of the air coil due to relative movement between the air coil and the electrically conductive surface.
Dependencies are inferred from the claim text.