Array sensors based on the magnetrostrictive delay line techniqu

Details Array sensors based on the magnetrostrictive delay line techniqu Array sensors based on the magnetrostrictive delay line techniqu

1992-05-06

1998-05-05

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

73862046, 7386269, 178 18, 32420715, 32420721, 324244, 324247, 324252, 324260, 333148, G01B 714, G01R 3302, G08C 2100, G01L 100

Patent

active

057479860

ABSTRACT:
Array sensors are described which are based on the magnetostrictive delay line technique, where sensing is based on the modification of the magnetic circuit along the magnetostrictive delay line. The proposed array sensors can perform a quantitative measurement of signals instead of the merely sensing activity performed by sensors of the prior art. Further advantageous characteristics of the proposed array sensors is that magnetoresistive devices and alternatively a detecting magnetostrictive delay line with two detecting coils at the ends thereof are used at the output of the sensor array, and that the detected pulsed width T is monitored instead of the peak voltage, this offering an improved response of the proposed array sensors. The above improvements are used in various applications and specifically are proposed novel digitizers and displacement sensors as well as a magnetic field distribution sensor.

REFERENCES:
patent: 4924711 (1990-05-01), Reilly
Hristoforou et al; "Characteristics of a Bending Beam Force Sensor Array Element", IEEE Trans. on Magnetics, vol. 27, No. 6, Nov. 1991 pp. 5244-5246.
Hristoforou et al; "A Digitizer Based on Reflections in Delay Lines" J. Appl. Phys. 70(8), 15 Oct. 1991, pp. 4577-4580.
Hristoforou et al; "New Mechanical Stress Transducers Based on Amorphous Alloys", IEEE Trans on Magnetics, vol. 26, No. 5, Sep. 1990, pp. 1563-1565 .

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