基于AM335X的农作物气象自动观测系统设计  

Design of AM335X-Based Automatic Crop-Meteorological Observation System

作　　者：李要中 刘钧 马尚昌[1,3] 

机构地区：[1]成都信息工程大学,成都610225 [2]华云升达(北京)气象科技有限责任公司,北京102299 [3]中国气象局大气探测重点开放实验室,成都610225

出　　处：《气象科技》2017年第5期818-824,共7页Meteorological Science and Technology

基　　金：国家重大科学仪器设备开发专项(2012YQ110205)资助

摘　　要：为顺应农业气象现代化的发展需求,以及观测方式由人工观测向自动观测的转变,设计了一种基于AM335X的农业气象自动观测系统。系统依托Ubuntu嵌入式开发平台,从硬件和软件两方面设计考虑。硬件部分选取Cortex-A8核心工业控制MCU,应用于对农业观测要素的图像信息处理,利用模块化结构,提升硬件设计的层次化标准。软件部分采用Thread多线程通信机制,搭建C++函数动态链接库,将基于SSH安全协议的ftp上传软件WinSCP,作为测试系统与PC机的交互工具。基于SecureCRT软件仿真环境,对照系统各状态输出格式要求,对观测系统的要素状态文件信息与图像文件信息进行了模拟状态调试输出与上传ftp服务器功能测试。结果表明:系统能自动实现对农作物观测要素状态数据与实时生长图像的观测采集与信息上传,对以后农业气象观测自动化的推广应用提供了一定的技术参考。In order to adapt to the development of agrometeorological modernization and the change of observation mode from manual observation to automatic observation, an automatic agrometeorological observation system based on AM335X is designed. The system is based on the Ubuntu embedded development platform, and is designed from two aspects of hardware and software. The hardware part selects the Cortex-A8 core industrial control MCU, which is applied to the image information processing of agricultural observation elements, and uses the modular structure to enhance the hierarchical standards of hardware design. In the software part, the Thread multithread communication mechanism is used to build the C-l-＋ dynamic link library, and the FTP upload software WinSCP based on the SSH security protocol is used as the interaction tool between the test system and the PC. Based on the SecureCRT softwaresimulation environment, considering the state of the output format, the simulation status debugging and FTP server outputting and uploading tests for the state file information and image file information of the observation system are carried out. The results show that the system can automatically conduct the collection and data uploading of crop element observations and real-time growth images and provide a technical reference for the application and popularization of the future agriculture meteorological observation automation.

关 键 词：AM335X 嵌入式开发 农业气象观测 图像采集 

分 类 号：P409[天文地球—大气科学及气象学]