基于LabVIEW设计的蔬菜大棚种植监控系统

针对于我国北方蔬菜大棚设备简陋,监控设备不足,产出投入比不高等问题,设计了基于Lab VIEW的蔬菜大棚种植监控系统。系统将蔬菜大棚内的温湿度、光照度、气体(O2、CO、CO2)浓度、肥液浓度和流量等参数,通过传感器变送后经数据采集单元采集后传至PC机,并在Lab VIEW中利用基于数据的生产者/消费者框架编写了系统的监控软件。监控系统将蔬菜大棚内环境参数进行实时采集与显示,并通过输出脉冲宽度调制(pulse width modulation,PWM)波控制执行部件,使温湿度、光照度、气体浓度、肥液浓度和酸碱度以及流量等参数快速稳定在设定范围内;在系统编程中,利用Lab VIEW控件自定义功能,设计了形象简洁的交互界面,实现了自动滴灌混肥和环境监控的功能。

Design of monitoring system for vegetable greenhouse planting in LabVIEW

There are many shortcomings such as poor equipment, lack of effective monitoring and low efficiency on investment for vegetable greenhouses in north China. A monitoring system for vegetable greenhouse planting is designed based on LabVIEW which can overcome the shortcomings above. Some of the parameters such as temperature, humidity, light, some gas (O₂, CO, CO₂) density, fertilizer solution density and flow are sampled by different sensors. These signals are transformed and converted to digital ones and processed by PC. The monitoring software which is based on the producer/consumer framework in LabVIEW is programmed. The environmental parameters in vegetable greenhouse can be acquired and displayed in real-time by the monitoring system. And the parameters can be controlled rapidly and stably by the output PWM waves to adjust them into the preset range. Visible and simple interactive interface is designed by the User-defining Controls of LabVIEW. The system for vegetable greenhouse planting accomplishes the functions of environmental monitoring, automatic drip irrigation and fertilizer compounding.