虚拟仪器在植物碳汇测量中的应用

Application of Virtual Instrument in the Plant Carbon Sink Measurement

植物碳汇是减少大气中CO2的主要途径,要想充分开发植物的碳汇能力,必须建立科学的碳汇评价系统。植物碳汇能力与其生长环境的温度、湿度紧密相关,精确建立植物碳汇能力与温度、湿度间的关系能够提高碳汇测算精度。研究中设计了一种基于虚拟仪器技术的植物培养系统,采用模糊控制方法实现对温湿度的自动控制,能够在短时间内较平稳地改变系统内部温湿度,为研究植物微碳汇与温湿度的关系提供良好的实验基础。实验结果表明,植物培养系统内部温湿度调节时间短、超调量小,温度偏差范围为[-3℃,+3℃],湿度偏差范围为[-3%RH,+4%RH]。

Plant carbon sink is the main way to reduce CO2 in the atmosphere,to fully develop carbon sink function of plants,must set up a scientific evaluation system of carbon sink. Plant carbon sink ability is associated with the temperature and humidity of its growing environment. The accuracy of the carbon sink estimation can be improved by establishing the relationship between the plant carbon sink ability and the temperature and humidity. A plant cultivation system based on virtual instrument technology was designed,fuzzy control was used to realize the automatic control of the temperature and humidity,the internal temperature and humidity of system can be changed more smoothly in a short time,provided a good experimental basis for the study of the relationship between plant micro carbon sink and the temperature and humidity.The experimental results showed that the temperature and humidity of the plant cultivate system have short control time,the overshoot,the temperature deviation range is [-3 ℃,＋3 ℃],the humidity deviation range is [-3%RH,＋4%RH].