Based On The μC/OS-Ⅱ Embedded Farmland Information Collection System Research And Design

Precision agriculture is based on information and knowledge management, complex system integration of agricultural systems. Into the information-based era of agricultural technology innovation, "precision agriculture" as a fine modern agricultural technology management system, its application and development of mankind can fully tap the potential of farmland, rational use of water and fertilizer resources, avoid environmental pollution, a significant increase quality of agricultural products, to ensure sustainable agricultural development. Therefore, precision agriculture represents the 21st century, the general trend of the world's agricultural development will be the modernization of China's agricultural development is the best choice.Quantitative description of the information in the field of research, many research results have appeared in domestic and international academic journals. However, due to the complexity of crop growth environment have yet to find the different farming systems for different areas of farmland in the field of information collection and processing methods, so the farm's field information collection and processing methods still need further study. Recently, the field of precision agriculture at home and abroad began to information collection and processing methods of research and discussion, focused on the law of variation of soil nutrients, but the application of advanced technologies for different degrees, the spatial variability of field information for the practical evaluation relatively small, crop yield and soil properties for the spatial distribution of information on the description of the relationship between the state, reported even less. Therefore, systematic and comprehensive study and explore the practice of precision agriculture for farm our information collection and processing methods is necessary.This issue is a combination of the domestic situation, according to the information collection fields of precision agriculture technology research and development needs of the field information collection system. This system will be based on the ideal embeddedμC/OS-Ⅱ, sensors, CAN bus data and other technologies combine the latest research results.Main conclusions of this paper is:1 Based on embedded systems, memory, GPS, and a variety of sensors designed a field information collection system. The system can capture and record GPS, soil moisture, nutrients, temperature and other sensor data, through the LCD screen on the spot to view the data, record data; user can collect various data records sent to the computer via serial port, the computer to form a text file, user-friendly data analysis.2 Extended CAN bus data transceiver interface with agricultural machinery (tractors, harvesters, etc.) CAN control bus connected to help the driver drive the implementation of agricultural machinery in the fields of agricultural operations. The need for variable rate fertilizer, spraying pesticides and other agricultural operations variables, called for agricultural machinery in specific fields to take a particular road speed, in order to achieve the dose and spray materials meet the requirements of agricultural operations.