Title:
METHOD FOR DETERMINING LEAKAGE LEVEL OF GAS PIPE NETWORK BASED ON IMPROVED EVIDENCE FUSION ALGORITHM
Document Type and Number:
WIPO Patent Application WO/2021/000061
Kind Code:
A1
Abstract:
A method for determining the leakage level of a gas pipe network based on an improved evidence fusion algorithm. The method uses gas pipe network information measured by sensors to acquire multiple evidence sources for determining gas pipe network leakage. For weak decision-making evidence, the focal element weighting of the focal element with the highest mass value is taken as l, and the other focal elements are multiplied by their respective focal element weighting, to thereby effectively expand the difference between the maximum confidence focal element and the other focal elements, making the results of evidence fusion more reliable and convergence faster. For conflicting evidence, average evidence is used to replace the conflicting evidence, and evidence distance weightings are used to limit the conflicting evidence, reducing the impact of same on the results of evidence synthesis, and enabling the weak decision-making evidence to exert its decision-making function. The present method can increase the accuracy of gas pipe network leakage level decision-making.
Inventors:
WANG BO (CN)
JIA JINGYUAN (CN)
JIA JINGYUAN (CN)
Application Number:
PCT/CN2019/000150
Publication Date:
January 07, 2021
Filing Date:
July 30, 2019
Export Citation:
Assignee:
BEIJING INSTITUTE TECH (CN)
WANG BO (CN)
JIA JINGYUAN (CN)
WANG BO (CN)
JIA JINGYUAN (CN)
International Classes:
G01M3/04; G06K9/62
Foreign References:
| CN101996157A | 2011-03-30 | |||
| CN101539241A | 2009-09-23 | |||
| CN108710900A | 2018-10-26 | |||
| CN104021392A | 2014-09-03 | |||
| US9869602B2 | 2018-01-16 | |||
| CN101556651A | 2009-10-14 | |||
| CN104346627A | 2015-02-11 | |||
| CN107884475A | 2018-04-06 |
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