一种用于温室增施 CO2 的化学反应式 CO2 发生控制器及其控制系统。系统采用了PID控制方法 ,微机通过传感变送器自动检测温室内的 CO2 浓度 ,并与系统设置的 CO2 浓度值进行比较 ,以控制 CO2 产生的化学反应过程。该控制系统结构简单 ,抗干扰能力强 ,运行费用低。 A CO2 Reactive CO2 Generation Controller and Its Control System for Greenhouse CO2 Enrichment. The system adopts the PID control method. The microcomputer automatically detects the CO2 concentration in the greenhouse through the sensor transmitter and compares it with the CO2 concentration value set by the system to control the chemical reaction process generated by CO2. The control system has the advantages of simple structure, strong anti-interference ability and low operation cost.