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US 6,486,659 B1Granted
Magnetoresistor sensor die with an array of MRs
AssigneeDelphi Technologies, Inc.
InventorThaddeus Schroeder
Life of this patent
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Abstract
A single die MR array composed of a plurality of MR elements, wherein each MR element is composed of a number of serially connected MR segments. The MR elements are arranged and configured so as to produce a variety of MR array geometries. In one form, an MR array is formed to provide angular sensing schemes wherein angular measurement redundancy is incorporated therein. In a second form, an MR array is formed to provide angular sensing schemes wherein angular measurement redundancy and reference redundancy are incorporated therein.
Claims12
A magnetoresistor sensor comprising:
- a single die comprising an array of magnetoresistor elements, said array comprising a first magnetoresistor element having a first area, a second magnetoresistor element having second area and a third magnetoresistor element having a third area, wherein each magnetoresistor element comprises a series of magnetoresistor segments arranged linearly in a respectively predetermined pattern which thereby defmes the respective area thereof, wherein said second magnetoresistor element is located between and adjacent to said first and third magnetoresistor elements, and wherein said die has a center;
- and
- an article having an end superposably adjacent said die in concentric relation to said center and in perpendicular relation to said die, wherein a first magnetic irregularity and a second magnetic irregularity are mutually diametrically disposed at said end;
- wherein said end is rotatable with respect to said die such that the first magnetic irregularity is always superposed said first magnetoresistor element, and wherein the second magnetic irregularity is always superposed said third magnetoresistor element;
- and
- wherein said first and third areas are much smaller than said second area.
3 more elements
A magnetoresistor sensor comprising:
- a single die comprising an array of magnetoresistor elements, said array comprising a first magnetoresistor element having a first area, a second magnetoresistor element having second area a third magnetoresistor element having a third area, a fourth magnetoresistor element having a fourth area, a fifth magnetoresistor element having a fifth area, and a sixth magnetoresistor element having a sixth area, wherein each magnetoresistor element comprises a series of magnetoresistor segments arranged linearly in a respectively predetermined pattern which thereby defmes the respective area thereof, wherein said first and second magnetoresistor elements are mutually adjacent and located between said sixth and third magnetoresistor elements such that said first magnetoresistor element is adjacent said sixth magnetoresistor element and said second magnetoresistor element is adjacent said third magnetoresistor element, wherein said fourth and fifth magnetoresistor elements are mutually adjacent and located between said sixth and third magnetoresistor elements such that said fourth magnetoresistor element is adjacent said third magnetoresistor element and said fifth magnetoresistor element is adjacent said sixth magnetoresistor element, and wherein said die has a center;
- and
- an article having an end superposably adjacent said die in concentric relation to said center and in perpendicular relation to said die, wherein a first magnetic irregularity and a second magnetic irregularity are mutually diametrically disposed at said end;
- wherein said end is rotatable with respect to said die such that the first magnetic irregularity is always superposed said first and second magnetoresistor elements, and wherein the second magnetic irregularity is always superposed said fourth and fifth magnetoresistor elements;
- and
- wherein said first, second, fourth and fifth areas are much smaller than said third and sixth areas.
3 more elements
Dependencies are inferred from the claim text.