US 12,449,279 B2
Dynamic resolution sensor
Manuel Rivas, Ciudad de Buenos Aires (AR); Leandro Fuentes, Caba (AR); Javier Cuneo, Buenos Aires (AR); and Nicolás Rigoni, Manchester, NH (US)
Assigned to Allegro MicroSystems, LLC, Manchester, NH (US)
Filed by Allegro MicroSystems, LLC, Manchester, NH (US)
Filed on Feb. 7, 2024, as Appl. No. 18/435,241.
Prior Publication US 2025/0251257 A1, Aug. 7, 2025
Int. Cl. G01D 5/14 (2006.01); G01P 3/487 (2006.01); G01P 3/489 (2006.01); G01R 33/06 (2006.01)
CPC G01D 5/14 (2013.01) [G01P 3/487 (2013.01); G01P 3/489 (2013.01); G01R 33/06 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method for use in a sensor, the method comprising:
detecting that a frequency of a first signal is in a first range, the first signal being generated, at least in part, by one or more first magnetic field sensing elements, the first signal being generated in response to a magnetic field that is associated with a rotating target, the rotating target including a plurality of pole pairs;
identifying a first resolution that corresponds to the first range and causing the first resolution to become a current resolution of the sensor; and
transmitting a data stream in accordance with the current resolution of the sensor,
wherein transmitting the data stream includes: (i) transmitting a plurality of speed pulses that encode a speed of the rotating target, and (ii) transmitting a plurality of data pulse sets, each of the data pulse sets being transmitted between a different pair of consecutive ones of the plurality of speed pulses, at least some of the data pulse sets being arranged to encode an indication of the current resolution of the sensor, and
wherein the current resolution of the sensor specifies a count of speed pulses that are transmitted for each pole pair of the rotating target.