Discussion on the technology architecture and key basic support technology for intelligent mine edge-cloud collaborative computing

With the application of industrial internet in all walks of life in China,relevant standards,systems and archi- tectures are becoming increasingly perfect. However,the problems exposed by the single cloud computing architecture in different applications are also increasingly obvious. After analyzing the mainstream architecture in the construction process of coal mine from digital mine to smart mine and considering the demand of future intelligent business,it is found that the single cloud computing architecture can no longer meet the growing demand of intelligent coal mines.Based on the data characteristics of five business areas of coal mines,the data of coal mine field is systematically clas- sified into two types,one suitable for edge computing and another for cloud computing. On this basis,a smart mining technology architecture system based on edge cloud collaborative computing architecture is designed by integrating the characteristics of the current four-layer technology architecture proposed in the field of industrial Internet. Finally, three solutions are proposed to ensure the implementation of the technical framework:① OPC UA technology is used to provide a unified,cross-layer security and extensible architecture to solve the problem of information island in data fu- sion analysis,ensuring the cross-layer interaction between edge computing data and cloud computing data. ② A time- sensitive network with the properties of bounded transmission delay, low transmission jitter and low data loss rate should be built,whose optimization mechanisms of time synchronization,data scheduling,load shaping and other opti- mization mechanisms would ensure the real-time,efficient,stable and safe transmission of time-sensitive data and pro- vide an effective solution for the digital twin and other new intelligent needs in the future. ③ Corresponding protection means are respectively deployed on the cloud and the edge end. Meanwhile,one-way network gate based on physical i- solation technology is deployed between the edge side and the cloud side,which can not only ensure the safety protec- tion capability of the edge-cloud collaborative computing technology of coal mine,but also meets the actual needs of in- telligent coal mine.