Title:
FREIGHT WEIGHT MEASUREMENT APPARATUS AND METHOD USING COMPENSATION PRESSURE IN ACCORDANCE WITH TEMPERATURE CHANGE OF HYDRAULIC FLUID
Document Type and Number:
WIPO Patent Application WO/2011/068338
Kind Code:
A2
Abstract:
The present invention relates to a freight weight measurement apparatus and method using compensation pressure in accordance with a temperature change of a hydraulic fluid. To this end, the freight weight measurement apparatus of the present invention comprises: a lift cylinder; a pressure sensor which is mounted in a lift cylinder line, and measures the inside pressure of the lift cylinder; a temperature sensor which is mounted inside the lift cylinder, and senses the temperature of the hydraulic fluid of the lift cylinder; and a controller which compensates a pressure value in case of no load and a pressure value in case of the maximum load as preset pressure compensation values according to a change of the temperature of the hydraulic fluid sensed by the temperature sensor, sets the pressure values to change the pressure values, and measures the weight of freight by using the set pressure values.
Inventors:
LEE, Eui Dong (1 Hyundai Apt, Gaebong 2-dong Guro-gu, iSeoul 152-755, 152-755, KR)
Application Number:
KR2010/008451
Publication Date:
June 09, 2011
Filing Date:
November 26, 2010
Export Citation:
Assignee:
DOOSAN INFRACORE CO., LTD. (7-11, Hwasu-dong Dong-gu, Incheon 401-020, 401-020, KR)
두산인프라코어 주식회사 (인천광역시 동구 화수동 7-11, 401-020 Incheon, 401-020, KR)
두산인프라코어 주식회사 (인천광역시 동구 화수동 7-11, 401-020 Incheon, 401-020, KR)
International Classes:
G01G5/04; G01G19/10
Attorney, Agent or Firm:
KIM, Kee-Hyo et al. (14F, Kukdong Building60-1 Chungmuro 3-ka, Chung-ku, Seoul 100-705, 100-705, KR)
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