基于RS-485总线的温室环境数据采集系统的研究

摘要

针对采用一般的传输线构成的温室数据采集系统存在速度比较慢、通信质量差、抗干扰能力低等问题,本文提出了一种利用 RS-485 总线构成分布式数据采集系统的设计方案, 通过RS-485总线实现温室内各种生长环境参数(如空气温度、空气相对湿度、光照度和CO2浓度等)的采集,从而实现温室内作物生长环境的智能调控,为解决传统温室有线系统的局限性提供了技术措施. 该方案投资少、见效快、应用范围广泛,为提高温室环境信息管理自动化程度和设施农业种植决策提供依据,从而提高了温室生产的技术水平.%In view of the general data acquisition system composed of the transmission line speed is slow, poor quality of communication and anti-interference ability. A scheme of data acquisition system composed of RS-485 bus is presented in this paper. This system can collect various growth environmental parameters through RS-485 bus in greenhouse (such as air temperature, air relative humidity, light and CO2 concentration, etc.). So as to realize the intelligent control of crop growth environment in greenhouse and provides the technical measures for solving the limitations of traditional greenhouse cable system. The scheme is of less investment, quick effect and wide application range. and it provide the basis for improving the greenhouse environment information management automation and decisions on facilities agriculture so as to improve the technological level of greenhouse production.