Research and Exploration of Carbon Dioxide Concentration Real-time Monitoring System Based on Freescale MCU

摘要

This project put forward a kind of new low-cost real-time monitoring system of carbon dioxide. First, this equipment guides the gas into the device of chemical reaction by using step motor and measures the change of the gas's volume which is guided into the device of chemical reaction after the reaction between the CO_2 and NaOH by using the data-acquisition unit. Then, it processes data with Freescale MC9S12XS128 MCU and calculates the concentration of the CO_2, in the meantime sends the data to the PC system by APC220V 3.0 wireless module, then using PC system makes the real time control over the concentration of the CO_2 come true. Finally, detecting concentration accurately and steadily is achieved.