Research And Development Of Data Acqui Sition System For Precision Agricultural Farmland Based On ARM Cortex-M4

Precision agriculture is a new concept in the development of modern agriculture.Its essence is to collect and analyze the data of crop growth environment,and fe ed back the growth status of crops,so as to meet the requirements of precision a griculture for improving the output and quality of crops.Based on arm cortex-m4,this paper studies and develops the data acquisition system of agricultural farmland.Using tm4c1294 ncpdt MCU of St(Italian semiconductor)company,the 8-paramete r precision agricultural data acquisition system is designed.The main contents are a s follows:(1)Overall scheme design of the system: respectively collect and design the da ta of agricultural geographical location,environmental temperature and humidity,CO2 concentration required by crop photosynthesis,light intensity,soil temperature,soi l humidity,soil conductivity and crop growth.(2)System hardware platform design: from the micro controller,power supply,tm4c1294 ncpdt system design,OLED,Lora wireless communication and other tech nical modules.(3)Software system design: data acquisition,communication,positioning,displ ay and other modules are designed respectively to improve the interface interaction ability.(4)System test: through the system test of the design,to achieve the expected results,a precision agriculture data acquisition system based on arm cortex-m4 is developed.The main innovations of this paper are as follows:(1)Multi parameters are collected at the same time,and transmitted to the con trol terminal remotely,with good real-time data.(2)Adopt human-computer interactive design to improve the interactive ability.