US 12,188,808 B2
Freight weight estimating apparatus and method
Keunjin Kim, Seongnam-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and KIA Corporation, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on May 24, 2022, as Appl. No. 17/752,233.
Claims priority of application No. 10-2021-0092682 (KR), filed on Jul. 15, 2021.
Prior Publication US 2023/0015990 A1, Jan. 19, 2023
Int. Cl. G01G 19/10 (2006.01)
CPC G01G 19/10 (2013.01) 4 Claims
OG exemplary drawing
 
1. A freight weight estimating apparatus, comprising:
a TPMS sensor configured to measure air pressure of a tire; and
a controller configured
to calculate a first tread area of the tire from a first air pressure of the tire measured by the TPMS sensor before loading freight,
to calculate a second tread area of the tire from a second air pressure of the tire measured by the TPMS sensor after loading the freight, and
to estimate a weight of the freight loaded in a vehicle based on the first tread area and the second tread area,
wherein in the controller, a relationship between the weight of the freight, the first air pressure of the tire, and the first tread area of the tire is stored as tabulated map data,
wherein the controller is configured to calculate the first tread area according to the first air pressure and the second tread area according to the second air pressure from the map data, and
wherein the controller is configured to calculate a first weight of freight corresponding to the first tread area and a second weight of freight corresponding to the second tread area from the map data, and to calculate the weight of the freight loaded in the vehicle from the first weight and the second weight.