US 12,007,270 B2
Status detection method and apparatus for load cell
JianWei Wu, Changzhou (CN); Jianqiang Yang, Changzhou (CN); and Liugang Bi, Changzhou (CN)
Assigned to Mettler-Toledo (Changzhou) Precision Instruments Co., Ltd, Changzhou (CN); Mettler-Toledo (Changzhou) Measurement Technology Co., Ltd, Changzhou (CN); and Mettler Toledo International Trading (Shanghai) Co., Ltd, Shanghai (CN)
Filed by Mettler-Toledo (Changzhou) Precision Instruments Co., Ltd, Changzhou (CN); Mettler-Toledo (Changzhou) Measurement Technology Co., Ltd, Changzhou (CN); and Mettler-Toledo International Trading (Shanghai) Co., Ltd, Shanghai (CN)
Filed on Sep. 24, 2021, as Appl. No. 17/448,759.
Claims priority of application No. 202011043483.5 (CN), filed on Sep. 28, 2020.
Prior Publication US 2022/0099480 A1, Mar. 31, 2022
Int. Cl. G01G 23/01 (2006.01); G01G 23/18 (2006.01)
CPC G01G 23/01 (2013.01) [G01G 23/18 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for detecting the status of a load cell in a plurality of load cells in a material tank system, the method comprising the steps of:
collecting, by way of a collection unit, characteristic sensing data of the load cells;
calculating, by way of a calculation unit, an anomaly in the collected characteristic sensing data, including by at least:
converting a time domain signal of each piece of the characteristic sensing data to a frequency domain through Fast-Fourier-Transformation calculation; and
determining an anomaly through an amplitude-frequency characteristic comparison in frequency domain; and
acquiring and outputting, by way of a sending unit, a corresponding load cell information when the anomaly exists.