Design And Implementation Of Field Data Acquisition System For Hydrogeology And Water Resources Survey Based On GeoCloud

In recent years,with the continuous deepening of geological surveys in various countries,the requirements for the accuracy and timeliness of field data acquisition are getting higher and higher.The existing field data acquisition system for hydrogeological survey has gradually been unable to cope with the production of massive survey data.Its single-machine mode is not conducive to the real-time summary of survey data and the timely acquisition of reference data,and also restricts the collaboration of the survey groups.The China Geological Survey hosted a comprehensive geological information service system,GeoCloud,which aims to improve the acquisition,aggregation,processing,analysis,sharing and service capabilities of geological survey data by integrating data resources and information systems to realize the modernization of geological survey.In this context,in order to implement the China Geological Survey's deployment of the GeoCloud platform construction and meet the needs of the online hydrogeology and water resources surveys in the new era,this paper newly developed a field data acquisition system for hydrogeology and water resources survey based on GeoCloud based on the field data acquisition system for hydrogeological survey at 1?50 000 scale.After researching related technologies such as Android development,cloud computing and network services,this paper combined the business process of hydrogeology and water resources survey,designed the architecture of the system in the cloud and mobile,and determined the main functional modules of the system and the storage methods and organizational structure of various types of data.Finally,based on this,the specific development work was carried out for each module.The system runs on the Android platform,which realizes the planning of survey points and survey routes,the location of various types of survey points,the automatic recording of survey trajectories,the entry of survey cards,and the management and display of these points and lines.With the powerful storage and computing capabilities of the GeoCloud platform and the advantages of network transmission,it realized convenient resource acquisition and timely data aggregation,including uploading survey data,downloading reference and planning data,and calling multi-source map services.In addition,based on the real-time upload of current survey status and data by each survey group in the project,the project team can control the survey progress of each group in real time: obtain and view their current location,current suvey trajectory and survey points on the trajectory,and supervise and guild the field work accordingly,each group can also collaborate with other groups by knowing their survey status.When the system is offline,each group can still complete their own survey work,and use the data line to summarize the survey data of the mobile terminal to the project central database.The system utilizes GeoCloud to provide a stable and reliable storage and management platform for massive survey data,promotes the integration and sharing of geological data,and enriches the application system of GeoCloud.At the same time,it also ensures the timeliness of field data acquisition,realizes the collaboration of the survey groups,improves the work efficiency of field personnel,and promotes the online process of hydrogeology and water resources surveys.