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该研究旨在设计一种基于互联网的温室控制系统,以便实现远程监测和控制。所设计的系统包括硬件(传感器、单片机、交换机、电脑、网络摄像头和执行器)和软件(采集和控制)。通过将执行器(风机、泵、喷雾器、机械遮光装置和可旋转摄像头)安装在试验温室并且连接到计算机互联网上对系统性能进行测试。在水培生菜等整个生长期内对其微气候参数进行监测,在3种操作模式(手动、自动和定时)下,对温度、湿度、光照和含水率进行控制。利用开关对风机、泵和喷雾器进行控制以确保微气候参数能保持在所需范围内。机械遮阴和摄头旋转采用伺服电机驱动,由PWM信号驱动进行控制。对3种模式下系统的性能进行评价和比较。结果表明,对温度、湿度、光照和含水率4个参数可以通过互联网Remote Desktop完成远程控制。监控单元提供的植物生长图片可作为制定控制决策的附加信息。
The study aimed to design an Internet-based greenhouse control system for remote monitoring and control. Systems designed include hardware (sensors, microcontrollers, switches, computers, webcams and actuators) and software (acquisition and control). The system performance was tested by installing actuators (fans, pumps, atomizers, mechanical shades and rotatable cameras) in the test greenhouse and connected to a computer internet. Microclimate parameters were monitored throughout the growing season, such as hydroponics lettuce, and temperature, humidity, light and moisture were controlled in 3 modes of operation (manual, automatic and timed). Use switches to control fans, pumps, and nebulizers to ensure that the micro-climate parameters remain within the desired range. Mechanical shading and camera rotation servo motor drive, driven by the PWM signal control. The performance of the system in three modes is evaluated and compared. The results show that the temperature, humidity, light and moisture content of 4 parameters can be completed through the Internet Remote Desktop 远 remote control. The plant growth picture provided by the monitoring unit serves as additional information for making control decisions.