Invention Grant
- Patent Title: Magnetic field sensor for orientation independent speed and direction measurement
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Application No.: US14731967Application Date: 2015-06-05
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Publication No.: US09605975B2Publication Date: 2017-03-28
- Inventor: Andrea Foletto , Andreas P. Friedrich
- Applicant: Allegro Microsystems, LLC
- Applicant Address: US MA Worcester
- Assignee: ALLEGRO MICORSYSTEMS, LLC
- Current Assignee: ALLEGRO MICORSYSTEMS, LLC
- Current Assignee Address: US MA Worcester
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G01D5/14
- IPC: G01D5/14 ; G01D5/16 ; G01R33/07 ; G01R33/09

Abstract:
A magnetic field sensor that provides target speed and direction detection that is independent of sensor-to-target orientation includes at least three differential channels, each responsive to a pair of magnetic field sensing elements to generate a respective magnetic field channel signal. A combining element is configured to generate a combined signal based on the first, second, and third magnetic field channel, signals and control circuitry responsive to the combined signal and to at least one of the first, second, and third magnetic field channel signals generates a sensor output signal that indicative of target speed and direction.
Public/Granted literature
- US20160356628A1 Magnetic Field Sensor For Orientation Independent Speed And Direction Measurement Public/Granted day:2016-12-08
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