光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2015年
8期
2067-2072
,共6页
光谱特征分析方法%甲烷爆炸火焰%光谱特征
光譜特徵分析方法%甲烷爆炸火燄%光譜特徵
광보특정분석방법%갑완폭작화염%광보특정
Spectrum characteristic analysis method%Gas explosion flame%Spectral characteristics
基于目标发射光谱分析法的原理，通过分析小尺寸实验平台上测得的体积分数10％的甲烷爆炸火焰光谱数据，提出甲烷爆炸火焰光谱特征分析方法，包括频域特征参数光谱密度、波段辐射光强度、波段平均及偏差，时域特征参数波段辐射能量、时间段平均及偏差和特性参数偏度、峰度、半宽的计算方法；分析得出当甲烷爆炸火焰光谱波长值为某些定值时，光谱密度在1 nm范围内在正向与负向之间转换，表明光强密集程度变化剧烈；甲烷爆炸火焰光谱波段定积分在550～900 nm波段最强；甲烷爆炸火焰光谱信号随着波长的增大可测时间增长，信号强度在达到峰值后整体呈衰减趋势，在衰减过程中间隔出现依次减弱的强度增强；研究结果表明目标发射光谱分析法可应用于甲烷爆炸感应期内火焰光谱的动态半定量分析，分析得出的光谱特征可作为检测甲烷爆炸火焰的判据。
基于目標髮射光譜分析法的原理，通過分析小呎吋實驗平檯上測得的體積分數10％的甲烷爆炸火燄光譜數據，提齣甲烷爆炸火燄光譜特徵分析方法，包括頻域特徵參數光譜密度、波段輻射光彊度、波段平均及偏差，時域特徵參數波段輻射能量、時間段平均及偏差和特性參數偏度、峰度、半寬的計算方法；分析得齣噹甲烷爆炸火燄光譜波長值為某些定值時，光譜密度在1 nm範圍內在正嚮與負嚮之間轉換，錶明光彊密集程度變化劇烈；甲烷爆炸火燄光譜波段定積分在550～900 nm波段最彊；甲烷爆炸火燄光譜信號隨著波長的增大可測時間增長，信號彊度在達到峰值後整體呈衰減趨勢，在衰減過程中間隔齣現依次減弱的彊度增彊；研究結果錶明目標髮射光譜分析法可應用于甲烷爆炸感應期內火燄光譜的動態半定量分析，分析得齣的光譜特徵可作為檢測甲烷爆炸火燄的判據。
기우목표발사광보분석법적원리，통과분석소척촌실험평태상측득적체적분수10％적갑완폭작화염광보수거，제출갑완폭작화염광보특정분석방법，포괄빈역특정삼수광보밀도、파단복사광강도、파단평균급편차，시역특정삼수파단복사능량、시간단평균급편차화특성삼수편도、봉도、반관적계산방법；분석득출당갑완폭작화염광보파장치위모사정치시，광보밀도재1 nm범위내재정향여부향지간전환，표명광강밀집정도변화극렬；갑완폭작화염광보파단정적분재550～900 nm파단최강；갑완폭작화염광보신호수착파장적증대가측시간증장，신호강도재체도봉치후정체정쇠감추세，재쇠감과정중간격출현의차감약적강도증강；연구결과표명목표발사광보분석법가응용우갑완폭작감응기내화염광보적동태반정량분석，분석득출적광보특정가작위검측갑완폭작화염적판거。
Through analyzing the spectroscopic data of gas explosion flame whose volume fraction is 10% under a small scale ex‐perimental condition based on the target emission spectrum analysis methods ;presents the gas explosion flame spectrum charac‐teristic analysis methods about frequency domain feature parameters which include spectral density ,band radiation light intensi‐ty ,band average deviation ,the time domain characteristic parameter which include band radiation energy ,time average and devi‐ation and the characteristic parameters which include skewness ,kurtosis and half width ;obtain the results that in the vicinity of somewhere ,the spectral density converts between positive and negative in the range of 1nm that the light intensity of gas explo‐sion flame changes dramatically ;the definite integral of gas explosion flame spectral waveband is strongest in the 550~900 nm ;with the wavelength increases the detected time grow ,the gas explosion flame spectral signal strength attenuation trends on the whole and after the peak interval appeared in the process of decay have weaken the strength of the enhanced ;results show that the target emission spectrum analysis methods can be applied to do the semi‐quantitative analysis of dynamic process of gas ex‐plosion ,the analysis spectral characteristics can be taken as a standard to detecting gas explosion flame .
