taking the bucket of multi function earth drill as an example, combining with the conception of multi sensor integration and data fusion, adopting the terrene column chart and digging torque formula as control depende...taking the bucket of multi function earth drill as an example, combining with the conception of multi sensor integration and data fusion, adopting the terrene column chart and digging torque formula as control dependence, the detecting method of the earth drill’s working state is introduced. Multi sensor data fusion is done with the aid of BP neural network in Matlab. The data to be interfused are pre processed and the program of simulation and “point checking” is given.展开更多
Oil and gas pipelines are of great importance in China,and pipeline security problems pose a serious threat to society and the environment.Pipeline safety has therefore become an integral part of the entire national e...Oil and gas pipelines are of great importance in China,and pipeline security problems pose a serious threat to society and the environment.Pipeline safety has therefore become an integral part of the entire national economy.Landslides are the most harmful type of pipeline accident,and have directed increasing public attention to safety issues.Although some useful results have been obtained in the investigation and prevention of pipeline-landslide hazards,there remains a need for effective monitoring and early warning methods,especially when the complexity of pipeline-landslides is considered.Because oil and gas pipeline-landslides typically occur in the superficial soil layers,monitoring instruments must be easy to install and must cause minimal disturbance to the surrounding soil and pipeline.To address the particular characteristics of pipelinelandslides,we developed a multi-parameter integrated monitoring system called disaster reduction stick equipment.In this paper,we detail this monitoring and early warning system for pipeline-landslide hazards based on an on-site monitoring network and early warning algorithms.The functionality of our system was verified by its successful application to the Chongqing Loujiazhuang pipeline-landslide in China.The results presented here provide guidelines for the monitoring,early warning,and prevention of pipeline geological hazards.展开更多
Concurrent engineering (CE) is a systematic approach to integrate concurrent design of products and their related processes. Its objective is to shorten product life cycle, improve product quality and reduce product c...Concurrent engineering (CE) is a systematic approach to integrate concurrent design of products and their related processes. Its objective is to shorten product life cycle, improve product quality and reduce product cost. Modeling the concurrent engineering product development process (CEPDP) is a key part of this process which has attracted the attention of researchers and engineers around the world. This paper focuses on a newly developed and potentially powerful CEPDP modeling philosophy——integrated multi view modeling (IMVM), by which managers can foresee the evolution of a product from its conception to its disposal and consider all the important factors in its production before a project is launched. CEPDP/IMVM is a product oriented modeling method. A modeling environment is used to establish a systematic model including different aspects of the process such as product information, development activities, enterprise resources, and organizational structure. The integration within an IMVM model should accurately reflect the PDPs dynamic characteristics and provide necessary information for monitoring and coordinating processes.展开更多
文摘taking the bucket of multi function earth drill as an example, combining with the conception of multi sensor integration and data fusion, adopting the terrene column chart and digging torque formula as control dependence, the detecting method of the earth drill’s working state is introduced. Multi sensor data fusion is done with the aid of BP neural network in Matlab. The data to be interfused are pre processed and the program of simulation and “point checking” is given.
基金financially supported by National Key R&D Program of China (No. 2018YFC1505201)National Natural Science Foundation of China (No. 41901008)+2 种基金Open Fund Project of Key Laboratory of Mountain Hazards and Surface Processes of the Chinese Academy of Sciencesthe Fundamental Research Funds for the Central Universities (Grant NO. 2682018CX05)financially supported by China Scholarship Council
文摘Oil and gas pipelines are of great importance in China,and pipeline security problems pose a serious threat to society and the environment.Pipeline safety has therefore become an integral part of the entire national economy.Landslides are the most harmful type of pipeline accident,and have directed increasing public attention to safety issues.Although some useful results have been obtained in the investigation and prevention of pipeline-landslide hazards,there remains a need for effective monitoring and early warning methods,especially when the complexity of pipeline-landslides is considered.Because oil and gas pipeline-landslides typically occur in the superficial soil layers,monitoring instruments must be easy to install and must cause minimal disturbance to the surrounding soil and pipeline.To address the particular characteristics of pipelinelandslides,we developed a multi-parameter integrated monitoring system called disaster reduction stick equipment.In this paper,we detail this monitoring and early warning system for pipeline-landslide hazards based on an on-site monitoring network and early warning algorithms.The functionality of our system was verified by its successful application to the Chongqing Loujiazhuang pipeline-landslide in China.The results presented here provide guidelines for the monitoring,early warning,and prevention of pipeline geological hazards.
文摘Concurrent engineering (CE) is a systematic approach to integrate concurrent design of products and their related processes. Its objective is to shorten product life cycle, improve product quality and reduce product cost. Modeling the concurrent engineering product development process (CEPDP) is a key part of this process which has attracted the attention of researchers and engineers around the world. This paper focuses on a newly developed and potentially powerful CEPDP modeling philosophy——integrated multi view modeling (IMVM), by which managers can foresee the evolution of a product from its conception to its disposal and consider all the important factors in its production before a project is launched. CEPDP/IMVM is a product oriented modeling method. A modeling environment is used to establish a systematic model including different aspects of the process such as product information, development activities, enterprise resources, and organizational structure. The integration within an IMVM model should accurately reflect the PDPs dynamic characteristics and provide necessary information for monitoring and coordinating processes.
