摘要
低空无人机将成为实时、快速监测农情参数变化的重要平台。简述了精准农业体系中基于四旋翼无人机农田信息采集系统的功能模型,设计了以STC89C52单片机为核心的低功耗无线温湿度测量系统,并对比nRF24L01芯片和nRF24L01芯片增加功率放大器和低噪声放大器后该系统的无线通信距离和误帧率。在农田环境中进行了四旋翼低空无人机载温湿度测量试验,试验结果表明:本系统能够进行超低空农田信息采集和无线传输,传输速率为2 Mb/s时通信距离可达500 m,温湿度测量误差分别低于3.0%和0.5%,基本能够满足农田环境中的超低空信息采集和无线传输需求。
Low altitude unmanned aerial vehicle( UAV) is becoming an important platform to obtain farmland information quickly in real time. The function model of farmland information acquisition system based on quad-rotor used in precision agriculture system was briefly discussed. The low power wireless temperature and humidity measuring system based on STC89C52 MCU as the core was designed,and wireless communication distance and the error rate were compared between nRF24L01 chip and nRF24L01 chip increased by PA and LNA. Wireless communication distance and the error rate of the system were tested. The temperature and the humidity were carried out on quad-rotor UAV in farmland environment. The results show that the system can be used in low field information acquisition and wireless transmission. When the error of temperature and humidity are controlled in the range of 3. 0% and 0. 5%,the communication distance can spread 500 m at the transmission rate of 2 Mb / s. The model can basically fulfill the requirements of the acquisition and wireless transmission of low altitude information acquisition in farmland.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2013年第6期71-74,95,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
河南省科技攻关重点基金项目(112102210101)
河南省教育厅自然科学研究基金项目(2010A210004)
