Villari effect seat weight sensor

Details Villari effect seat weight sensor Villari effect seat weight sensor

1998-01-08

1999-05-18

Biegel, Ronald

Measuring and testing

Dynamometers

Responsive to torque

G01L1/12

Patent

active

059052104

ABSTRACT:
A Villari effect sensor comprises a sensing rod constructed from a magnetostrictive material. An alternating current signal applied to an overlapping drive coil is inductively coupled by the sensing rod to the sensing coils and generates a signal thereon, responsive to the permeability of the magnetostrictive sensing rod which decreases responsive to the applied load. The sensing rod comprises one or more sections, each having a distinct cross-sectional area, and a sensing coil is associated with each section. A signal processor calculates the magnitude of the applied force from either the maximum flux density, or by differencing the first and third harmonics of the signal from the sensing coil. The weight of an occupant on a vehicle seat is measured by either incorporating a tensile force measuring Villari effect sensor in series with the seat springs, or incorporating a compressive force measuring Villari effect sensor in series with seat posts.

REFERENCES:
patent: 4802368 (1989-02-01), Nordvall
patent: 4823621 (1989-04-01), Sobel et al.
patent: 5007295 (1991-04-01), Gustafsson et al.
patent: 5437197 (1995-08-01), Uras et al.
patent: 5580804 (1996-12-01), Gioutsos
patent: 5739757 (1998-04-01), Gioutsos
patent: 5747696 (1998-05-01), Kwun et al.
PCT International Search Report, Mailed Jun. 19, 1998, regarding International Application No. PCT/US98/00656.
Back in Style: Magnetostrictive Sensors, Magnetostrictive Sensors Technology, Hegeon Kwun Ph.D., Mar. 1995, 8 pages.
Signal Detection Methods for Magnetostrictive Sensors, SAE International, Mehmet H. Uras, Feb. 24, 1997, 13 pages.

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