US 12,264,955 B2
Combination weighing device
Takuma Furukawa, Ritto (JP); Satoru Kamigaito, Ritto (JP); and Tsuyoshi Ishibashi, Ritto (JP)
Assigned to Ishida Co., Ltd., Kyoto (JP)
Filed by Ishida Co., Ltd., Kyoto (JP)
Filed on Aug. 9, 2022, as Appl. No. 17/818,577.
Claims priority of application No. 2021-163978 (JP), filed on Oct. 5, 2021.
Prior Publication US 2023/0105361 A1, Apr. 6, 2023
Int. Cl. G01G 13/18 (2006.01); G01G 13/02 (2006.01); G01G 13/24 (2006.01); G01G 21/22 (2006.01)
CPC G01G 13/18 (2013.01) [G01G 13/026 (2013.01); G01G 13/243 (2013.01); G01G 21/22 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A combination weighing device that repeats a cycle, the cycle includes of supplying products to a plurality of measurement hoppers, measuring weight of supplied products, obtaining combinations of the plurality of measurement hoppers based on a plurality of obtained measurement values, selecting a combination having a measurement value close to a target weight value among the obtained combinations, and discharging the products from the plurality of measurement hoppers of the selected combination, the combination weighing device comprising:
a storage unit that stores time-series measurement values sequentially acquired by the measurement hoppers;
a time measurement unit that measures an elapsed time from a timing corresponding to supply of the products to the measurement hoppers until a timing at which the time-series measurement values enter a region considered to be stabilized when the time-series measurement values stored in the storage unit converge to the region considered to be stabilized as a stabilization time until the measurement values become stabilized; and
a selection unit that acquires the stabilization times by the time measurement unit over a plurality of cycles and is configured to select a recommended stabilization time that is the stabilization time in which a predetermined measurement accuracy is configured to be maintained based on a standard deviation of the acquired stabilization times for the plurality of cycles.