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The application of Internet of Things in surveying and mapping industry basically is at the exploration stage,has not formed a unified standard.Chongqing Institute of Surveying and Mapping (CQISM) launched the research p roject "Research on the Technology of Internet of Things for Smart City".The project focuses on the key technologies of information transmission and exchange on the Internet of Things platform.The data standards of Internet of Things are designed.The real-time acquisition,mass storage and distributed data service of mass sensors are realized.On this basis,CQISM deploys the prototype platform of Internet of Things.The simulation application in Connected Car proves that the platform design is scientific and practical.