J Shanghai Jiaotong Univ Sci ›› 2020, Vol. 25 ›› Issue (5): 578-588.doi: 10.1007/s12204-020-2179-y

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Assembly Information Model Based on Knowledge Graph

CHEN Zhiyu (陈治宇), BAO Jinsong (鲍劲松), ZHENG Xiaohu (郑小虎), LIU Tianyuan (刘天元)    

  1. (College of Mechanical Engineering, Donghua University, Shanghai 201600, China)
  • 出版日期:2020-10-28 发布日期:2020-09-11
  • 通讯作者: BAO Jinsong (鲍劲松) E-mail:bao@dhu.edu.cn
  • 作者简介:

Assembly Information Model Based on Knowledge Graph

CHEN Zhiyu (陈治宇), BAO Jinsong (鲍劲松), ZHENG Xiaohu (郑小虎), LIU Tianyuan (刘天元)    

  1. (College of Mechanical Engineering, Donghua University, Shanghai 201600, China)
  • Online:2020-10-28 Published:2020-09-11
  • Contact: BAO Jinsong (鲍劲松) E-mail:bao@dhu.edu.cn
  • About author:

摘要: There are heterogeneous problems between the CAD model and the assembly process document. In
the planning stage of assembly process, these heterogeneous problems can decrease the efficiency of information
interaction. Based on knowledge graph, this paper proposes an assembly information model (KGAM) to integrate
geometric information from CAD model, non-geometric information and semantic information from assembly
process document. KGAM describes the integrated assembly process information as a knowledge graph in the
form of “entity-relationship-entity” and “entity-attribute-value”, which can improve the efficiency of information
interaction. Taking the trial assembly stage of a certain type of aero-engine compressor rotor component as an
example, KGAM is used to get its assembly process knowledge graph. The trial data show the query and update
rate of assembly attribute information is improved by more than once. And the query and update rate of assembly
semantic information is improved by more than twice. In conclusion, KGAM can solve the heterogeneous problems
between the CAD model and the assembly process document and improve the information interaction efficiency.

关键词: knowledge graph, assembly process, information model, integrating

Abstract: There are heterogeneous problems between the CAD model and the assembly process document. In
the planning stage of assembly process, these heterogeneous problems can decrease the efficiency of information
interaction. Based on knowledge graph, this paper proposes an assembly information model (KGAM) to integrate
geometric information from CAD model, non-geometric information and semantic information from assembly
process document. KGAM describes the integrated assembly process information as a knowledge graph in the
form of “entity-relationship-entity” and “entity-attribute-value”, which can improve the efficiency of information
interaction. Taking the trial assembly stage of a certain type of aero-engine compressor rotor component as an
example, KGAM is used to get its assembly process knowledge graph. The trial data show the query and update
rate of assembly attribute information is improved by more than once. And the query and update rate of assembly
semantic information is improved by more than twice. In conclusion, KGAM can solve the heterogeneous problems
between the CAD model and the assembly process document and improve the information interaction efficiency.

Key words: knowledge graph, assembly process, information model, integrating

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