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1. WO2022069062 - A METHOD OF MONITORING POSITION USING A MAGNETIC SENSOR SYSTEM

Publication Number WO/2022/069062
Publication Date 07.04.2022
International Application No. PCT/EP2020/077713
International Filing Date 02.10.2020
IPC
G01D 5/14 2006.1
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
14influencing the magnitude of a current or voltage
G01D 5/245 2006.1
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
244influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
245using a variable number of pulses in a train
CPC
G01D 2205/14
G01D 2205/26
G01D 2205/28
G01D 5/145
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
14influencing the magnitude of a current or voltage
142using Hall-effect devices
145influenced by the relative movement between the Hall device and magnetic fields
G01D 5/2451
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
244influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
245using a variable number of pulses in a train
2451Incremental encoders
Applicants
  • ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY [IE]/[IE]
Inventors
  • SCHMITT, Jochen
  • COSGRAVE, Gavin
  • NICHOLL, Enda
  • NAU, Christian
  • BRADSHAW, Stephen
  • O'RIORDAN, Katherine
Agents
  • THOMPSON, Andrew
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD OF MONITORING POSITION USING A MAGNETIC SENSOR SYSTEM
(FR) PROCÉDÉ DE SURVEILLANCE DE POSITION À L'AIDE D'UN SYSTÈME DE CAPTEURS MAGNÉTIQUES
Abstract
(EN) The present disclosure provides a linear actuator apparatus, magnetic sensor system and method of use for detecting a position of a component driven by a rotatable mechanism in a linear direction. A magnetic sensing device comprising both a multi-turn (MT) sensor and a single turn (ST) sensor is provided within the same semiconductor package and placed in the vicinity of the rotatable mechanism. A magnet is mounted on the rotatable mechanism, such that, as the mechanism rotates, a rotating magnetic field is generated. The MT sensor measures the number of turns of the rotating magnetic field, which is translated to the number of turns of the rotatable mechanism. The ST sensor measures the angle of the rotating magnetic field, which is translated to an angular position of the rotatable mechanism. As each turn of the rotatable mechanism will be translated to a specific amount of linear motion, the amount by which the rotational mechanism has turned is proportional to the distance travelled by the driven component, and thus indicative of the linear position. Therefore, by placing a magnet and the magnetic sensing device in relation to the rotatable mechanism, with the multi-turn sensor providing the number of turns and the angle sensor providing the precise angular position within each turn, the measured rotational position can be translated to a corresponding linear position of the element being moved linearly as a result of the rotation.
(FR) La présente invention concerne un appareil d'actionnement linéaire, un système de capteur magnétique et un procédé d'utilisation pour détecter une position d'un composant entraîné par un mécanisme rotatif dans une direction linéaire. Un dispositif de détection magnétique comprenant à la fois un capteur multitour (MT) et un capteur à simple tour (ST) est disposé dans le même boîtier semi-conducteur et placé à proximité du mécanisme rotatif. Un aimant est monté sur le mécanisme rotatif, de telle sorte que, lorsque le mécanisme tourne, un champ magnétique rotatif est généré. Le capteur MT mesure le nombre de tours du champ magnétique tournant, qui est converti en nombre de tours du mécanisme rotatif. Le capteur ST mesure l'angle du champ magnétique tournant, qui est converti en une position angulaire du mécanisme rotatif. Comme chaque rotation du mécanisme rotatif est convertie en une quantité précise de mouvement linéaire, la mesure de la rotation du mécanisme rotatif est proportionnelle à la distance parcourue par le composant entraîné, et indique donc la position linéaire. Par conséquent, en plaçant un aimant et le dispositif de détection magnétique en relation avec le mécanisme rotatif, le capteur multitour fournissant le nombre de tours et le capteur d'angle fournissant la position angulaire précise à l'intérieur de chaque tour, la position de rotation mesurée peut être convertie en une position linéaire correspondante de l'élément déplacé linéairement sous l'effet de la rotation.
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