Spatio-temporal Data Model Of Safe Production Of Underground Coal Mine

In recent years,the rapid development of information technology and the strengthening of industrial automation construction have promoted the transformation of traditional coal mining enterprises towards digital,information-based and intelligent digital mines.All kinds of sensors and automation equipment have been put into the coal mine production,producing a lot of spatio-temporal sequence data,but the existing researches are not enough to mining and utilize these spatio-temporal data.In order to meet the needs of real-time observation,storage and management,and data analysis in underground coal mine production,we need to build a spatio-temporal data model that can be applied to the coal mine production.On the basis of the study of existing spatiotemporal data model,this paper gives an object-oriented spatio-temporal data model,regarding to the features of the production process and elements,under the guidance of object-oriented thought,abstracts the production elements into spatio-temporal objects,dissects the structure and interrelationship of the different objects,strictly follows the definition of the model,selects the suitable platform,designs and implements the spatio-temporal information prototype system of mine underground safety production based on WebGIS.Firstly,this article analyzes the basic theory of spatio-temporal data model,summarizes its' concept,development,types and characteristics,briefly discusses the problems and deficiencies in the current research,and looks forward to the future research direction.In addition,the paper also studies the relevant technologies of Web application development,and chooses the appropriate technology platform and framework for the information system.Secondly,this paper divides the production process into three kinds of objects: person,equipment and sensor,and gives the spatio-temporal object model,aims at the feafures of production process and various production elements,based on the object-oriented spatiotemporal data modeling thought and method.Based on this,presents the model as a trituple of spatio-temporal objects,neighbors and spatio-temporal relationships.At the same time,gives a model by UML to describe the definition,structure and interrelation of each component,elaborates the structure of each class in the model,and analyzes the relationship between classes.Finally,completes the architecture,function,and database design of the coal mine underground safety production information system,following the rules of the model on the relationship between objects and the business requirements in actual production.Introduces the implementation of the system in detail,including the system development environment,code organization,and the critical code and interface display of each function module.Then the usability of the system is verified through two simulation experiments.