嵌入式红外吸收甲烷检测仪的设计

Design of Embedded IR-absorption Methane Detector

为了能够准确地检测甲烷气体浓度,根据朗伯-比尔吸收定律,设计了以AT89LV51单片机为核心的甲烷检测仪,实现了数据的采集、处理、显示及报警控制。当被测气体中甲烷浓度超过预定数值时,将发出声光报警。实验结果表明该检测仪具有较高的灵敏度和测量精度,并具有结构简单、体积小、操作方便、实时检测和数据处理能力强的特点,可推广应用到其他气体测试系统。

In order to detect the concentration of methane precisely,a detector of methane based on Labert-beer Law is designed. The single chip computer AT89LV51 is used in the instrument as the kernel for implementing data acquisition,data processing,display and alarm control. When the detected concentration of methane exceeds the preset value, the instrument will send out visual and audio alarm information. The result of experiments indicates that the detector features high sensitivity and accuracy, and it is simple, compact and easy to operate. The detector offers strong real-time data processing capability ;and it can be extended to detecting systems of other gases.