首页>
外国专利>
Gas absorption spectroscopic system and gas absorption spectroscopic method
Gas absorption spectroscopic system and gas absorption spectroscopic method
展开▼
机译:气体吸收光谱系统和气体吸收光谱方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Provided is a gas absorption spectroscopic system and gas absorption spectroscopic method capable of accurately measuring the concentration or other properties of gas even in high-speed measurements. Laser light with a varying wavelength is cast into target gas. A spectrum profile representing a change in the intensity of the laser light transmitted through the target gas with respect to wavelength is determined. For this spectrum profile, polynomial approximation is performed at each wavelength point within a predetermined wavelength width, using an approximate polynomial. Based on the coefficients of the terms in the approximate polynomial at each point, an nth order derivative curve, where n is an integer of zero or larger, of the spectrum profile is created. A physical quantity of the target gas is determined based on the thus created nth order derivative curve.
展开▼