Granted Patent B2

US 12,188,808 · App. 17/752,233 · Granted Jan 7, 2025

Inventor: Keunjin Kim (Seongnam-si, KR)

Assignees: Hyundai Motor Company; KIA Corporation

G01G19/10

Abstract

Claims (20)

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.

2. The freight weight estimating apparatus of claim 1 , further comprising a display device configured to provide a value of the weight of the freight loaded in the vehicle to a driver.

3. A freight weight estimating method, comprising:

measuring, via a controller, a first air pressure of a tire before loading freight;

measuring a second air pressure of the tire after loading the freight;

calculating a first tread area of the tire corresponding to the first air pressure,

calculating a second tread area of the tire corresponding to the second air pressure; and

estimating a weight of freight loaded in a vehicle based on the first and second tread areas of the tire,

wherein 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 first tread area according to the first air pressure and the second tread area according to the second air pressure are calculated from the map data, and

wherein a first weight of freight corresponding to the first tread area and a second weight of freight corresponding to the second tread area are calculated from the map data, and a weight of the freight loaded in the vehicle is calculated from the first weight and the second weight.

4. The freight weight estimating method of claim 3 , further comprising providing a value of the weight of the freight loaded in the vehicle to a driver.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (12)