Electricity: measuring and testing – Magnetic – With compensation for test variable
Patent
1980-06-30
1983-04-19
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With compensation for test variable
235449, 324212, 382 7, G01R 3312, G01N 2772, G06K 900
Patent
active
043807348
ABSTRACT:
The magnetic intensity in a succession of strips (12) in an article (10) is measured by producing relative motion between the article (10) and a magnetic sensing head (23) to produce a succession of first voltage waveforms. Each such waveform has a shape substantially characterized by the positions of the poles (13 and 14) in a respective strip (12). Each incremental portion of the shape has an amplitude proportional to the magnetic intensity sensed along the surface of the strip (12) and to the instantaneous speed of the relative motion between the sensing head (23) and such surface. By coupling a generator (31) to the article (10), a second voltage waveform is produced having a shape for each strip, wherein each incremental portion has an amplitude proportional to an instantaneous speed equivalent to the speed producing the first voltage waveform for the respective strip (12). The first waveform of a strip (12) is fed into the numerator input "Z" of a dividing circuit (36) and, simultaneously therewith, the second waveform for the same strip (12) is fed into the denominator input "X1" of the same circuit (36). Advantageously, the circuit (36) has a processing speed sufficient to produce a third voltage waveform of a shape wherein each incremental portion is independent of the speed of the relative motion and is faithful in amplitude and position to the poles (13 and 14) in each respective strip (12).
REFERENCES:
patent: 2882488 (1959-04-01), Price et al.
patent: 3235776 (1966-02-01), Ireland
patent: 3389230 (1968-06-01), Hudson
patent: 3478876 (1969-11-01), Littwin et al.
patent: 3496457 (1970-02-01), Proctor et al.
patent: 3612838 (1971-10-01), Conn
patent: 3634657 (1972-01-01), Ballard et al.
patent: 3676644 (1972-07-01), Vaccaro et al.
patent: 3714558 (1973-01-01), Swanpoel
patent: 3825728 (1974-07-01), Nakauchi et al.
patent: 3835374 (1974-09-01), Frost
patent: 3863141 (1975-01-01), Mori et al.
patent: 3916157 (1975-10-01), Roulette et al.
patent: 3932731 (1976-01-01), Moore, Jr.
patent: 3949193 (1976-04-01), Dowdell
patent: 4058763 (1977-11-01), Steingroever
patent: 4087789 (1978-05-01), Berry
patent: 4218612 (1980-08-01), Krehl et al.
Winegardner, Joe E., "Unit Quantity Dedicated Controllers:Unique Requirements-General Solutions", IECI '76 Conference Proceedings, Mar. 8-10, 1976, pp. 67-69.
Cushman, Robt. H., EDN, Feb. 15, 1969, pp. 73-79, "Transistor Responds To Magnetic Fields".
Murai, Masayuki, "Hall-Effect Magnetic Sensor Reads Data at Any Speed", Electronics, Feb. 1, 1973, pp. 91-96.
Houseweart G. W.
Strecker Gerard R.
Watson D. C.
Western Electric Company Inc.
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