基于红外传感器的CO_2气体检测电路设计

Design of CO_2 Detection Circuit Based on Infrared Sensor

利用红外吸收型CO2气体传感器设计了一种CO2气体检测电路,详细阐述了其结构和工作原理。该电路具有测量范围宽、灵敏度高、响应时间快、抗干扰能力强等优点,简单易用,快速直读,价格低廉,具有较好的应用前景。

The C02 detection circuit is designed by using a sensor which absorbs CO2 .the work principle and probe＇s structure of the sensor is introduced.The design ideal, hardware constitute,and the work process of the CO2 detection circuit is expatiated, and the flow chart of detection program is given.application practice is indicated that the circuit have many advantage,such as wide range of measure, higher sensitivity, fast response, better selectivity, strong anti-disturb and so on. It＇s easy to use, inexpensive and display visual. Still, short life-span,expensive and need frequent adjustment,all that are overcomed,and have better application foreground.