Electricity: measuring and testing – Magnetic – Displacement
Patent
1999-08-31
2000-07-18
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Displacement
32420725, 327511, G01B 730, G01P 3489, F02P 1702, H03G 100
Patent
active
060912391
ABSTRACT:
A detector for detecting passing magnetic articles including a magnetic-field-to-voltage transducer having an output at which an analog voltage Vsig is generated, with the Vsig voltage being commensurate to the strength of the ambient magnetic field and having at least one peak. An analog-to-digital converter coupled to the output of the transducer is operative to convert to a corresponding digital signal at least a portion of the Vsig voltage, which portion includes the peak and a circuit coupled to the analog-to-digital converter is operative to generate an output signal indicative of the occurrence of the times t.sub.xpk when the difference between Vsig and said peak of Vsig has exceeded a predetermined amount.
REFERENCES:
patent: 4185265 (1980-01-01), Griffin et al.
patent: 4293814 (1981-10-01), Boyer
patent: 4367721 (1983-01-01), Boyer
patent: 4374333 (1983-02-01), Avery
patent: 4443716 (1984-04-01), Avery
patent: 4476901 (1984-10-01), Sainen
patent: 4705964 (1987-11-01), Higgs
patent: 4906928 (1990-03-01), Gard
patent: 4992731 (1991-02-01), Lorenzen
patent: 5291133 (1994-03-01), Gokhale et al.
patent: 5317258 (1994-05-01), Setzer et al.
patent: 5442283 (1995-08-01), Vig et al.
patent: 5459398 (1995-10-01), Hansen et al.
patent: 5477142 (1995-12-01), Good et al.
patent: 5493219 (1996-02-01), Makino et al.
patent: 5497084 (1996-03-01), Bicking
patent: 5510706 (1996-04-01), Good
patent: 5694038 (1997-12-01), Moody et al.
"An Engineering Approach to Digital Design", William I. Fletcher, pp. 14-19, Prentice Hall, Inc., 1980.
"Data Acquisition and Conversion Handbook", pp. 16-17, Datel-Intersil, Inc., Mansfield, Massachusetts, 1979.
"ATS612LSB, Advanced Information Data Sheet", Data sheet 27627.101, Allegro MicroSystems, Inc., 115 Northeast Cutoff, Box 15036, Worcester, Massachusetts 01615-0036, pp. 1-16, Sep. 6, 1996.
"ATS630LSA and ATS631LSA, Zero-Speed, Self-Calibrating, Hall-Effect Gear-Tooth True Power-On Sensors",Data sheet 27627.120, Allegro MicroSystems, Inc., 115 Northeast Cutoff, Box 15036, Worcester, Massachusetts 01615-0036, twelve pages, Oct. 28, 1996.
"Motorola Linear/Interface Integrated Circuits", data sheet, Series D, Motorola Inc., 1983, two pages.
"Operational Amplifiers Design and Applications", Jerald G. Graeme, et al., McGraw-Hill Book Company, pp. 1, 352-353, not dated.
"ATS630, ATS631: True Power On, Self-Calibrating Zero Speed Gear Tooth Sensor System", Preliminary Data Sheet, Allegro MicroSystems, Inc., REV. 2.6; R. Vig, pp. 1-8, not dated.
Moody Kristann L.
Towne Jay M.
Tu Teri L.
Vig Ravi
Allegro Microsystems Inc.
Snow Walter E.
LandOfFree
Detection of passing magnetic articles with a peak referenced th does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detection of passing magnetic articles with a peak referenced th, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of passing magnetic articles with a peak referenced th will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2040249