Design And Implementation Of Multi-source And Heterogeneous Agricultural Sensor Data Access System

China is a large agricultural country, agriculture is always in the position of play a decisive role in the development of national economy. At present, China is in a crucial period of transition from traditional agriculture to modern agriculture. In recent years, With the development of Internet of Things Technology, Application of Internet of things in the field of agriculture development. Agricultural IOT system contains the perception layer, transport layer and application layer; transport layer and perception layer data of agricultural production perceived acquisition, application layer on the sensing data processing application; because the perception layer data contains facilities field, orchard, aquaculture and the production of agricultural fields, and the transport protocol data vary the sensing data, agriculture with characteristics more sources of heterogeneity, strong; in addition, agriculture IOT applications more extensive coverage, the need for data is not single, such as mining, in the agricultural data of agricultural industry chain construction, agricultural products quality and safety system construction and other fields, often require the production of multi-source heterogeneous sensor data link in agriculture, which requires the sensor data fusion; therefore, a heterogeneous sensor data access service in agriculture, to build a bridge between the network system data transmission layer and application layer, the agricultural sensor data fusion, it is especially important to provide data services for the upper application platform is.Based on sensor data adapter based access methods of study, analyses the present research situation at home and abroad on the related technology, and according to the agricultural perception data of multi-source heterogeneous characteristics, in-depth understanding of the perception data access means and methods at home and abroad, analyzes the existing sensing data access business process, constructs the agricultural sensor data in a standard model, the final design and implementation of the multi-source heterogeneous agricultural perception data access system; the system comprises a sensor registration module, sensing data adapter module and the perception of data storage module; the user through the sensor registration module of system registration on sensor data fields and sensor ID to access, after registered, when the data is sent to the system, sensing data adapter module will use dynamic resource allocation, dynamic for the perception of heterogeneous data matching corresponding adapter adapter of the sensor; the heterogeneous data into a unified data format, the data access storage module on the sensing data storage. The system realizes the access function of multi-source heterogeneous agriculture data of sense, effective integration of sensing data resources, to achieve integration of sensing data production in agriculture, and unified for agriculture application system to provide data services; system trial operation in the first half of the Beijing agriculture information technology research center, the system is reliable and stable, normal operation. In conclusion, this paper is a study of the perception data access management in agricultural field, have important sense to the development of agriculture IOT system.