The Cooperative Work Of Software Components In City Traffic

As software conformation is transformed from traditional based entity-derived to based cooperation-derived, researching cooperation between software entity in city traffic command system, extracting reusable transportation domain oriented, supporting cooperative work, quickening implementation of solution in transportation domain are purpose of this paper.This paper researches software coordination and coordination model. By IWIM coordination Model, develop components and framework in City Traffic. First this paper implements the electronic map framework—EMAP in transportation domain. Because object model is uncertainty supported by traffic command system, in different condition framework supports different object types and operations set that not only contains usual GIS geography and building object but also different transportation applications supports different object sets. EMAP framework can integrate new object model, and the join of new object doesn't effect the operation of original object type. Later GUI framework supporting GIS geography and building object was developed. Second TSTATE(transportation station framework) was developed. For operation conduct in transportation domain is uncertainty, as user and bridge among background business logic, business operation supported by Fast-response system must also display on transportation interface. TSTATE framework supports changing and addition on system conduct, however, as a general framework transportation domain oriented, TSTATE also doesn't import implementation of correlative conduct. Finally, existing problem and solution of coordination among EMAP, GUI and TSTATE framework, accordingly coordination capacity was enhanced among these three framework and TMAP was built.Successful framework needs repeating validate and iteration of similar system in domain. As Dalian city traffic Fast-response System was applied and authenticated successfully by Ministry of Public Security, as well as application of above-mentioned frameworks in vehicle navigation system, portable personal navigation system, vehicle location system and city road layout system has already validated the function of these frameworks.