计算机仿真
計算機倣真
계산궤방진
COMPUTER SIMULATION
2014年
5期
264-267
,共4页
李闯%黄继国%庞朔%陈博谦
李闖%黃繼國%龐朔%陳博謙
리틈%황계국%방삭%진박겸
垃圾渗滤液%土壤污染%回波信号
垃圾滲濾液%土壤汙染%迴波信號
랄급삼려액%토양오염%회파신호
Garbage leachate%Soil pollution%Echo signal
研究垃圾填埋渗滤液土壤污染准确检测问题。渗滤液进入深层土壤后,土壤环境不同,渗滤液在下渗过程中,与土壤中的各种矿物质和水分子结合形成外部静电电流干扰,使得渗滤液导电率降低。传统的方法是通过渗滤液的快速导电特征进行污染检测的,一旦渗滤液导电率受到干扰,电流波动会导致检测准确率降低。提出利用OC-SVM模型的垃圾渗滤液对土壤污染程度检测的方法。采集垃圾渗滤液土壤污染回波信号,利用离散优化窗口对采集到的土壤污染回波信号进行处理,计算土壤污染回波信号瞬时频率估计结果,捕获污染信号特征空间的非线性结构特性,将上述特征映射到对应的特征空间中,将土壤污染程度检测问题转换为最优平面求解问题,得到土壤污染回波信号分类器,实现土壤污染程度检测。实验结果表明,利用改进算法进行垃圾渗滤液对土壤污染程度的检测,可以提高检测准确率。
研究垃圾填埋滲濾液土壤汙染準確檢測問題。滲濾液進入深層土壤後,土壤環境不同,滲濾液在下滲過程中,與土壤中的各種礦物質和水分子結閤形成外部靜電電流榦擾,使得滲濾液導電率降低。傳統的方法是通過滲濾液的快速導電特徵進行汙染檢測的,一旦滲濾液導電率受到榦擾,電流波動會導緻檢測準確率降低。提齣利用OC-SVM模型的垃圾滲濾液對土壤汙染程度檢測的方法。採集垃圾滲濾液土壤汙染迴波信號,利用離散優化窗口對採集到的土壤汙染迴波信號進行處理,計算土壤汙染迴波信號瞬時頻率估計結果,捕穫汙染信號特徵空間的非線性結構特性,將上述特徵映射到對應的特徵空間中,將土壤汙染程度檢測問題轉換為最優平麵求解問題,得到土壤汙染迴波信號分類器,實現土壤汙染程度檢測。實驗結果錶明,利用改進算法進行垃圾滲濾液對土壤汙染程度的檢測,可以提高檢測準確率。
연구랄급전매삼려액토양오염준학검측문제。삼려액진입심층토양후,토양배경불동,삼려액재하삼과정중,여토양중적각충광물질화수분자결합형성외부정전전류간우,사득삼려액도전솔강저。전통적방법시통과삼려액적쾌속도전특정진행오염검측적,일단삼려액도전솔수도간우,전류파동회도치검측준학솔강저。제출이용OC-SVM모형적랄급삼려액대토양오염정도검측적방법。채집랄급삼려액토양오염회파신호,이용리산우화창구대채집도적토양오염회파신호진행처리,계산토양오염회파신호순시빈솔고계결과,포획오염신호특정공간적비선성결구특성,장상술특정영사도대응적특정공간중,장토양오염정도검측문제전환위최우평면구해문제,득도토양오염회파신호분류기,실현토양오염정도검측。실험결과표명,이용개진산법진행랄급삼려액대토양오염정도적검측,가이제고검측준학솔。
This paper studied accurate detection method for soil pollution of landfill leachate . After leachate en-ters the deep soil, due to the soil environment is different, in the process of infiltration, the leachate will combined with a variety of minerals and water molecules to form external static current interference, which reduces leachate con-ductivity. This paper presented a detection method for soil pollution of rubbish leachate based on OC-SVM model. Echo signal of soil pollution of garbage leachate was collected and treated by discrete optimization window. The in-stantaneous frequency estimation result of the echo signal was calculated, the nonlinear structure characteristics of the pollution signal feature space were captured, and the above features were made mapped to the corresponding feature space. Then the soil pollution detection problem was converted into the optimal solution of the plane and the contami-nated soil echo signal classifier were obtained, so as to realize the detecting of soil pollution degree. Experimental re-sults show that using the improved algorithm for detecting soil pollution of garbage leachate can improve the detection accuracy.