The Reserch And Design Of Bluetooth Sensor Node For Detecting Framlang Environment

Crop environment on crop yield and quality has a decisive role and is an important material foundation of the existence and development of agricultural production. Using advanced scientific methods of crop cultivation environment monitoring, to analyze and master the dynamic changes of crop growing conditions, so that timely adjust to improve the plant environment and create a more favorable for crops natural conditions. This paper put forward a bluetooth technology was applied to the agricultural production research plan, through the design of hardware and software, the ultimate aim is to realize sensor node to planting environment in controlled frequency type of data acquisition and the accurate wireless transmission. The main research contents and results are as follows:(1)Analyzing the application of bluetooth sensors in agriculture. According to the application needs analysis of farmland environmental monitoring, put forward a design scheme of bluetooth sensor nodes about the bluetooth technology application in agricultural production. On the sensor node design LCD display, independent timing, and other functions, convenient user visual check sensor node working state and very suitable for field work requirements.(2) The modular design of the sensor node hardware design. Including power supply module design, timing module design, display module design, key adjusting module design, the data acquisition module design, data processing module design, bluetooth communication module design and antenna design. Each module has been tested and working properly.(3) In the Keil C51 platform, using C language, devising the hardware circuit control procedures. After testing, program operation is stable, portability is strong.(4) According to the use requirement of bluetooth sensor node in the main node is developed to control the timing sent, a single data sent, error messages warning and other functions such as historical data preservation. The master node by lowering data sending frequency achieve reducing power consumption. After testing, each function is running well, friendly software interface. (5) Studying the method of reduce channel bit error rate. Improving and innovating a method of coding and decoding for reducing the channel error rate. Through the simulation results prove that the coding and decoding way effectiveness.The design has a wide range of application and a low running costs. To promote precision agriculture, improve fine crop yield, improve agricultural product quality, realize the agricultural production automation has positive significance.