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href="http://www.cdcfah.com/cp/third-hjjcyq_zaoyinjipy/">噪音計</a>?靜安區(qū)低頻噪聲檢測機構歡迎咨詢上海綠環(huán)商品檢測供應</p><div id="e3w3ase" class="leftbox clearfix"><h1>靜安區(qū)低頻噪聲檢測機構歡迎咨詢上海綠環(huán)商品檢測供應</h1><div id="kw2ni87" class="proBig"><div id="b2qjurj" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SHLHJC1/637449324950936634/3129208.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wnk33ls" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SHLHJC1/637449324950936634/3129208.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ynkhz3r" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>靜安區(qū)低頻噪聲檢測機構,噪聲檢測</p><p><span>***更新：</span>2021-02-04 00:27:46</p><p><span id="click" >瀏覽次數(shù)：8次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8daxszw" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海綠環(huán)商品檢測有限公司</a></p><p><span>聯(lián)系人：</span>程莉君</p><p><span>郵箱: </span>chenglijun139@163.com</p><p><span>電話: </span>18717976244</p><p><span>傳真: </span>021_62384557</p><p><span>網(wǎng)址: </span>http://www.x-gpi.com</p><p><span>手機: </span>021-62398830</p><p><span>地址: </span>綏德路2弄8號第四層</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ffme22e" class="page-proshow02"><p class="title">詳細說明</p><div id="ztas3fh" class="box"><p><p style="text-indent:25px">噪聲的壞處：使工作效率降低。研究發(fā)現(xiàn)，靜安區(qū)低頻噪聲檢測機構，噪聲超過85分貝，會使人感到心煩意亂，人們會感覺到吵鬧，因而無法專心地工作，結(jié)果會導致工作效率降低。損傷聽覺、視覺部位我們都有這樣的經(jīng)驗，從飛機里下來或從鍛壓車間出來，耳朵總是嗡嗡作響，甚至聽不清對方說話的聲音，過一會兒才會恢復。這種現(xiàn)象叫做聽覺疲勞，是人體聽覺部位對外界環(huán)境的一種保護性反應。如果人長時間遭受強烈噪聲作用，聽力就會減弱，進而導致聽覺部位的器質(zhì)性損傷，靜安區(qū)低頻噪聲檢測機構，造成聽力下降。強的噪聲可以引起耳部的不適，如耳鳴、耳痛、聽力損傷。據(jù)測定，超過115 分貝的噪聲還會造成耳聾。據(jù)臨床醫(yī)學統(tǒng)計，若在80分貝以上噪音環(huán)境中生活，造成耳聾者可達50％。醫(yī)學**研究認為，靜安區(qū)低頻噪聲檢測機構，家庭噪音是造成兒童聾啞的病因之一?，F(xiàn)場采樣人員都要將實地采回來的樣品進行檢測。靜安區(qū)低頻噪聲檢測機構</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="靜安區(qū)低頻噪聲檢測機構,噪聲檢測" src="https://tyunfile.71360.com/UploadFile/SHLHJC1/637449324950936634/3129208.png"></div><p style="text-indent:25px">應用場景:NVH測試:NVH一般是指汽車制造質(zhì)量的一個綜合性問題，需要將用戶的較直觀的感受分解到汽車各部件的性能上去。各大整車廠近20%的研發(fā)費用都是花費在車輛的NVH問題上。在當前整個汽車行業(yè)不景氣的情況下，加大研發(fā)的投入是所有整車廠的選擇。要解決這個問題，一般需要多點多參數(shù)的同步測試，以便分析各部件的關聯(lián)關系。因此要解決NVH問題，測試系統(tǒng)采集和分析同樣重要。目前市面上流行的多通道多參數(shù)的測試系統(tǒng)基本都是國外設備的天下，且測試軟件都綁定硬件。此類領域測試裝備的特點是：通道數(shù)多，信號分析能力要求高。靜安區(qū)低頻噪聲檢測機構選用同一臺齒輪加工機床所加工出來的齒輪，能夠利于降低嚙合的噪聲。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="靜安區(qū)低頻噪聲檢測機構,噪聲檢測" src="https://tyunfile.71360.com/UploadFile/SHLHJC1/637449324718045812/3185742.png"></div><p style="text-indent:25px">工廠為什么要做噪聲檢測：噪聲對人們的生活影響日益嚴重，噪聲干擾居民的工作、學習、休息和睡眠，嚴重的還會危害人體的健康。其中工廠噪聲又是城市噪聲的重要來源。工業(yè)噪聲是指機械設備運轉(zhuǎn)時產(chǎn)生的噪聲。按其噪聲源特性可分為：氣流噪聲、機械噪聲和電磁噪聲。從物理定義而言，振幅和頻率上完全無規(guī)律的震蕩稱之為噪聲。從環(huán)境保護角度而論，凡是人們所不需要的聲音統(tǒng)稱為噪聲。糾正錯誤觀念，只要聲音大了，即使是音樂也是噪聲什么是工業(yè)噪聲呢？工業(yè)企業(yè)廠界噪聲的定義：指在工業(yè)生產(chǎn)活動中使用固定設備等產(chǎn)生的、在廠界處進行測量和控制的干擾周圍生活環(huán)境的聲音。人長期在噪音環(huán)境（75dBA及以上）中工作或生活，會造成聽覺疲勞、視力下降，嚴重者會造成長久性聽力損傷，甚至導致噪聲耳聾。同時，還會引起惡心、記憶力衰退、心律不齊、血壓波動，導致神經(jīng)衰弱，引發(fā)及動脈硬化。降低勞動生產(chǎn)率：在噪聲環(huán)境中工作，員工情緒煩燥不安，注意力無法集中，易導致工作失誤，嚴重影響工作質(zhì)量降低工作效率，甚至造成工傷事故。而且特強噪聲對儀器設備和建筑結(jié)構的也有嚴重的危害。</p><p style="text-indent:25px">噪聲檢測中應注意的問題及對策：噪聲的測量儀器噪聲測量儀器主要有：聲級計、頻率分析儀、實時分析儀、聲強分析儀、噪聲級分析儀、噪聲劑量計、自動記錄儀、磁帶記錄儀。聲級計是在噪聲測量中較基本和較常用的一種聲學儀器，它不僅具有不隨頻率變化的平直頻率響應，可用來測量客觀量的聲壓級，而且還有模擬人耳頻響特性的A、B和C(有的還有D)計權網(wǎng)絡，可作為主觀聲級測量。它的“快”“慢”擋裝置可對漲落較快噪聲作適當反應，以反映和觀察噪聲性質(zhì)。國際電工會(IEC)651規(guī)定，按測量的精度和穩(wěn)定性聲級計分為四型，0、1型為精密型，頻率范圍是20～12500Hz，供研究工作用;2型、3型屬普通型，頻率范圍是31.5～8000Hz，適用于一般測量和普通調(diào)查。脈沖精密聲級計除用于測量穩(wěn)態(tài)聲源功率外，主要用于測量機器撞擊和炮發(fā)射的脈沖噪聲。測量聲強或分析噪聲信號時使用聲強計、實時分析儀等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="靜安區(qū)低頻噪聲檢測機構,噪聲檢測" src="https://tyunfile.71360.com/UploadFile/SHLHJC1/637449324982909083/9123692.png"></div><p style="text-indent:25px">不同區(qū)域噪聲檢測方法：若是廠界存在圍墻，則噪聲檢測點必須在圍墻以上，應根據(jù)實際狀況合理設置布點的數(shù)量。接下來要按照各噪聲測點位置開展噪聲檢測工作，同時認真記錄相關數(shù)據(jù)，確保將工業(yè)等場所噪聲檢測結(jié)果準確顯示出來。三是建筑施工噪聲檢測。在建筑施工場地噪聲檢測過程中，應從被檢測建筑物的建筑方案出發(fā)，將噪聲檢測位置與氛圍合理確定下來。應較全掌握建筑物形成污染源位置，之后在建筑施工現(xiàn)場邊界線上選擇污染源較近的檢測點，并從施工現(xiàn)場實際情況出發(fā)，有針對性作出調(diào)整，保證獲得較佳的噪聲檢測結(jié)果。選用的電壓表其帶寬應遠大于被測系統(tǒng)的噪聲帶寬。靜安區(qū)低頻噪聲檢測機構</p><p style="text-indent:25px">在實踐中不斷作出修改與調(diào)整，保證其適用性與先進性。靜安區(qū)低頻噪聲檢測機構</p><p style="text-indent:25px">噪聲檢測：噪聲監(jiān)測是對干擾人們學習、工作和生活的聲音及其聲源進行的監(jiān)測活動。其中包括：城市各功能區(qū)噪聲監(jiān)測、道路交通噪聲監(jiān)測、區(qū)域環(huán)境噪聲監(jiān)測和噪聲源監(jiān)測等。噪聲監(jiān)測結(jié)果析噪聲污染的現(xiàn)狀及變化趨勢，也為噪聲污染的規(guī)劃管理和綜合整治提供基礎數(shù)據(jù)。一般以A計權聲級表示，所用的主要儀器是聲級計和頻譜分析器。噪聲監(jiān)測的結(jié)果用于分析噪聲污染的現(xiàn)狀及變化趨勢，也為噪聲污染的規(guī)劃管理和綜合整治提供基礎數(shù)據(jù)。噪聲又稱雜音，屬于隨機信號，可用統(tǒng)計學方法加以描述，即其統(tǒng)計量是可測的。噪聲存在于一切電子系統(tǒng)中，嚴重地影響通信系統(tǒng)接收微弱信號的能力，即影響通信的質(zhì)量。靜安區(qū)低頻噪聲檢測機構</p><p style="text-indent:25px">上海綠環(huán)商品檢測有限公司致力于儀器儀表，以科技創(chuàng)新實現(xiàn)***管理的追求。上海綠環(huán)商品檢測深耕行業(yè)多年，始終以客戶的需求為向?qū)В瑸榭蛻籼峁?**的環(huán)境監(jiān)測，公共場所衛(wèi)生檢測，建設工程衛(wèi)生學評價，室內(nèi)空氣檢測。上海綠環(huán)商品檢測始終以本分踏實的精神和必勝的信念，影響并帶動團隊取得成功。上海綠環(huán)商品檢測始終關注自身，在風云變化的時代，對自身的建設毫不懈怠，高度的專注與執(zhí)著使上海綠環(huán)商品檢測在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3146638.html</p></div></div></div></div></div><div id="8ifhoqn" class="page-right twoColRt"><div id="zj7jgsj" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ga3ur2l" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="7jvsz8w" class="recomPic likePro"><a 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