US 12,287,233 B2
Force sensing scale with target
Gael Close, Bevaix (CH); Jerome Degois, Paris la Defense (FR); Nicolas Dupre, Bevaix (CH); Theo Le Signor, Bevaix (CH); and Tim Vangerven, Tessenderlo (BE)
Assigned to MELEXIS TECHNOLOGIES SA, Bevaix (CH)
Filed by Melexis Technologies SA, Bevaix (CH)
Filed on Jun. 27, 2022, as Appl. No. 17/850,509.
Claims priority of application No. 21182116 (EP), filed on Jun. 28, 2021; and application No. 21206815 (EP), filed on Nov. 5, 2021.
Prior Publication US 2022/0412791 A1, Dec. 29, 2022
Int. Cl. G01G 7/02 (2006.01); A47J 42/44 (2006.01); G01L 1/04 (2006.01); G01L 1/12 (2006.01); G01R 33/00 (2006.01); G01R 33/07 (2006.01)
CPC G01G 7/02 (2013.01) [G01L 1/04 (2013.01); G01L 1/122 (2013.01); G01R 33/0047 (2013.01); G01R 33/072 (2013.01); A47J 42/44 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A weight sensor comprising:
a flexible piece provided with a target piece, the flexible piece configured for receiving a force stimulus from a product provided on the flexible piece for displacement of the target piece with respect to a sensing element;
the sensing element configured to sense changes of a magnetic field from said displacement of the target piece with respect to the sensing element and to provide a signal representative of a position of the target piece; and
an integrated circuit configured for processing signals from the sensing element;
wherein the sensing element is a first sensing element, the weight sensor comprising at least one further sensing element spaced apart a predetermined distance from the first sensing element,
wherein the integrated circuit is further configured to process signals from the sensing element and the at least one further sensing element, to provide a gradient of at least one component of the magnetic field and to obtain a weight of the product based on said gradient.