Title:
DIRECTION DETECTION SENSOR
Document Type and Number:
WIPO Patent Application WO/2010/083007
Kind Code:
A4
Abstract:
A sensor responsive to movement of a detection target includes a magnetic field transducer operative to provide a magnetic field signal proportional to a magnetic field associated with the detection target, a peak detector for tracking positive and negative peaks of the magnetic field signal to generate a tracking signal, and a comparator having a first input responsive to the magnetic field signal, a second input responsive to an input signal related to the tracking signal, and an output at which is provided an output signal comprising first pulses having a first pulse width when the detection target moves in a first direction and second pulses having a second pulse width when the detection target moves in a second direction.
Inventors:
FERNANDEZ DEVON (US)
TAYLOR WILLIAM P (US)
MORRIS MICHAEL (US)
SCHELLER P KARL (US)
SHOEMAKER ERIC (US)
TAYLOR WILLIAM P (US)
MORRIS MICHAEL (US)
SCHELLER P KARL (US)
SHOEMAKER ERIC (US)
Application Number:
PCT/US2009/068910
Publication Date:
May 19, 2011
Filing Date:
December 21, 2009
Export Citation:
Assignee:
ALLEGRO MICROSYSTEMS INC (US)
FERNANDEZ DEVON (US)
TAYLOR WILLIAM P (US)
MORRIS MICHAEL (US)
SCHELLER P KARL (US)
SHOEMAKER ERIC (US)
FERNANDEZ DEVON (US)
TAYLOR WILLIAM P (US)
MORRIS MICHAEL (US)
SCHELLER P KARL (US)
SHOEMAKER ERIC (US)
International Classes:
G01D5/245; G01D5/14
Attorney, Agent or Firm:
CROWLEY, Judith, C. et al. (Crowley Mofford & Durkee, LLP,Suite 301A,354A Turnpike Stree, Canton Massachusetts, US)
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