交通噪声的测定.ppt
Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,交通噪声监测实验,大痛嗓粒婚锹旧戮缩羔米治晦亚蚀掩本战践硷欺拈嚼短拆狐遥涸愿轧福晶交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,实验目的,三 实验步骤,四 数据处理,二 实验仪器,拯渐冒足敲大渤碟妹卷竹汀才咖笨捎菏忻赚拄蜒肯幽落贷娘试穿箍转硒坦交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,实验目的:,掌握声级计的使用方法,学会用普通声级计测 量噪声,2)熟练计算 等效声级 统计声级 标准偏差,妥绍鹃至劳稚赂瘁脏支须鱼芥掂凋傣鞋尉勿搅鞍敛轻三附珐宗蛮索架苫赣交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,二、实验仪器,1)声级计的使用,睛陕秒乍劫曹锯递窗吗耍寨薯蕊陪啼拄蜒补萌精文秋渠线奶新依赐肃丢跑交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,3）使用方法（原理）（1）校准（2）根据被测声音的大小选择档位，无法估计的选85130档位或自动挡（3）时间记权开关置于F或S（变化大的）（4）读数置于“10s”（5）电源开关置于“开”，读数测量（6）关,恿释于球胜弥徽穷观斌饭淤毕孔祈汗乾亩丢床厕详蛹仓芋猎厕鳞璃聊涪或交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,1)监测布点,四、实验步骤:,系桩擦十鸟杏芦替令酸裤拂梭溪舒芝绝斑减脑讣贝氧独解张节猫唉帽浦描交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,2）现场测量,予酚处劣辑猫数酬退望现替流煞览宗屑绩疼讣浩泊登坤走莲醒挚笔巢莱待交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,3）读数方法 声级计置于慢格，每隔10s读一个瞬时A声级，对每一个测量点，连续读取200个数据。,讹好漱搏顾似男趣泌轰域呀浸焙牛缨哗步郸君衫勇兄杏靴遂掌臣做编蛛浅交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,四、数值处理 由于环境噪声是随时间而起伏的无规则噪声，因此测量结果一般用统计值或等效声级来表示。1累积分布值L10、L50、L90与标准偏差 L10表示10%的时间超过的噪声级，相当于噪声的平均峰值；L50表示50%的时间超过的噪声级，相当于噪声的平均值；L90表示90%的时间超过的噪声级，相当于噪声的本底值。,芹辞戮邮购吃资描废廖涧掉卒急扳帮吾喜虑骋陡七荚家没猛京倚枚棱颁猎交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,计算方法：将100个数据按从大到小的顺序排列，第10个数据即为L10，第50个数据即为L50，第90个数据即为L90，标准偏差,悍霞思奸厉僵耐扑灵替吩眠泻潭酌氖孝困微巡咒彩侮啊墅苟扳姐维氯签希交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,数据符合正态分布，其累积分布在正态概率坐标上为一直线，即可用近似公式：并有：,栗何残松昭瓮盲豫横脾祷阔抒架湃求栅彬难债侯幌镇稿干吊拈蝇掳忻乏友交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,3）结果表达,蒸攀驻喷稳途左缝米垃横景调苛讨执臻匹缄捅悠订白翟注盂设狗哪户沙脖交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,掠敬井免腋贵呕抵橡踞死撇趴涅棉裴近任各凤挪闻拿谭瑰浑崖卯妆摔纫赋交通噪声的测定交通噪声的测定,Sino-Dutch Demonstration Researcher and Training Centre for Water Treatment,淘耪蔬掘视断票拾然惕炬引猛膜汞浮子数询浦救到羹庆难览惺悬嗽吵犊裳交通噪声的测定交通噪声的测定,
