Title:
A METHOD FOR LEVEL CORRECTION OF A LOAD CELL IN A WEIGHING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/083243
Kind Code:
A1
Abstract:
A method for correcting the level of a load cell in a weighing system comprising N load cells configured to weigh an object includes steps of: obtaining an actual load value from N load cells and performing a summation of the actual load values obtained from the N load cells, and calculating centre of mass of the object to be weighed in an X direction and a Y direction based on position coordinates of the N load cells; selecting a load cell from the N load cells and expressing the ideal load value of the (N-1) load cells in terms of an ideal load value of the selected load cell; calculating the ideal load value of each load cell based on a proportional relationship of the summation of the ideal load values of the N load cells and the summation of actual load value, wherein the proportional relationship is based on a principle that the centre of mass of the object to be weighed on a horizontal plane is constant; and calculating a load difference between the ideal load value and the actual load value of each load cell, and determining the least load difference Δwi of N load cells and output an instruction for correcting the level of the load cells. According to the adjustment method, the load cell can be conveniently and quickly adjusted based on the instructions.
Inventors:
WANG SHENHUI (CN)
GU JUN (CN)
YANG LI (CN)
WU JIANWEI (CN)
YANG JIANQIANG (CN)
ZHAO YUPENG (CN)
CAI JINJIE (CN)
GUO ZHENG (CN)
LI CHUNHUI (CN)
ZHANG SONG (CN)
GU JUN (CN)
YANG LI (CN)
WU JIANWEI (CN)
YANG JIANQIANG (CN)
ZHAO YUPENG (CN)
CAI JINJIE (CN)
GUO ZHENG (CN)
LI CHUNHUI (CN)
ZHANG SONG (CN)
Application Number:
PCT/CN2023/125749
Publication Date:
April 25, 2024
Filing Date:
October 20, 2023
Export Citation:
Assignee:
METTLER TOLEDO CHANGZHOU PREC INSTRUMENTS LTD (CN)
METTLER TOLEDO CHANGZHOU MEASUREMENT TECHNOLOGY LTD (CN)
METTLER TOLEDO TECH CHINA CO LTD (CN)
METTLER TOLEDO CHANGZHOU MEASUREMENT TECHNOLOGY LTD (CN)
METTLER TOLEDO TECH CHINA CO LTD (CN)
International Classes:
G01G23/01; G01G23/14; G01G23/00
Foreign References:
| JP5679852B2 | 2015-03-04 | |||
| JP2013253834A | 2013-12-19 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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