Mechanical sensor having a U-shaped planar coil and a magnetic l

Details Mechanical sensor having a U-shaped planar coil and a magnetic l Mechanical sensor having a U-shaped planar coil and a magnetic l

1993-10-19

1995-09-19

Chilcot, Jr., Richard E.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

73760, 336200, G01B 716, G01L 112

Patent

active

054507553

ABSTRACT:
A mechanical sensor is provided, which includes: a magnetic layer having permeability which is changed in accordance with stress generated therein; a coil having at least two terminals, allowing an electric current to flow therebetween to generate a magnetic flux, thereby magnetizing the magnetic layer; and a substrate integrally supporting the magnetic layer and the coil, wherein the coil is a planar coil including at least one winding, each winding having a U-shaped portion formed of a first conductive line portion, a second conductive line portion, and a connecting portion connecting the first and second conductive line portions, the first and second conductive line portions extending in a first direction, and impedance between the terminals is changed in accordance with a change of inductance caused by a change of the permeability of the magnetic layer.

REFERENCES:
patent: 4494100 (1985-01-01), Stengel et al.
patent: 4933209 (1990-06-01), Anthony et al.
patent: 5070317 (1991-12-01), Bhagat
patent: 5194806 (1993-03-01), Obama
EPO Search Report (93117098.9) dated Dec. 28, 1994.
"Oil Pressure Sensor Using Amorphous Magnetic Alloy", SAE Technical Paper Series 920700, pp. 111-118 (1992).
R. E. Jones, Jr., "Analysis of the Efficiency and Inductance of Multiturn Thin Film Magnetic Recording Heads", IEEE Transactions on Magnetics, vol. MAG-14, No. 5, pp. 509-511 (Sep. 1978).
Kawabe, K. et al., "Planar Inductor", IEEE Transactions on Magnetics, vol. MAG-20, No. 5, pp. 1804-1806 (Sep. 1984).

Affiliated with

Also associated with

Rating

Mechanical sensor having a U-shaped planar coil and a magnetic l does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanical sensor having a U-shaped planar coil and a magnetic l, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical sensor having a U-shaped planar coil and a magnetic l will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1821935