欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
根据物体在周期性变化的光的照射下会产生声音信号的现象，提出了一种基于光声光谱理论的甲烷气体检测的方法。根据比尔一朗伯定律，经过调制的平行光束通过不同体积分数的甲烷气体时，其光强将会发生不同程度的衰减，若衰减后的光束进入光声腔，将会在光声腔内产生光声信号，通过测定光声信号的幅值来达到检测甲烷气体体积分数的目的。此方法相对于通常的光谱法，增加了把热能转换为声信号的过程，具有极高的精确性和可靠性，为设计高灵敏度瓦斯传感器的研究提供理论依据。
英文摘要：
According to the phenomenon that the objects will generate sound signal under the irradiation of periodic light, a detection method of methane gas based on photoaeoustic spectroscopy is proposed. According to Beer-Lambert law, when the modulated parallel beams is passing different volume fraction of methane gas, the light intensity will become attenuation in different degrees. If the decayed light go into a photoaeoustic cavity, photoacoustie signal will be generated in the cavity. By measuring the amplitude of photoaeoustie signal, the purpose of detecting the methane gas is achieved. Compared with usual spectral method,this method add a process that converting the heat energy into sound signal,which has high accuracy and reliability. It provide a theoretical basis for studying on high sensitive methane gas sensor.
同期刊论文项目
同项目期刊论文
位置：