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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637385478171072618/1595196.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ge4ogo0" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637385478171072618/1595196.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="scq46uq" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>北京高溫傳感器線圈,傳感器線圈</p><p><span>***更新：</span>2021-02-03 10:07:49</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="44mmwwe" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫東英電子有限公司</a></p><p><span>聯(lián)系人：</span>朱淇華</p><p><span>郵箱: </span>wxdydz@163.com</p><p><span>電話: </span>13921179070</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0510-83785478</p><p><span>地址: </span>江蘇省無錫市錫山區(qū)錫北鎮(zhèn)新壩村</p><p>[當(dāng)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="uemiguu" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="sck2aya" class="box"><p><p> 可以把產(chǎn)生電渦流的金屬導(dǎo)體等效成一個(gè)短路環(huán)，即假設(shè)電渦流只分布在環(huán)體內(nèi)。因此，電渦流式傳感器的等效電路計(jì)算方法為：式中，R2為電渦流短路環(huán)等效電阻；h為電渦流的深度（）；ra為短路環(huán)的外徑；ri為短路環(huán)的內(nèi)徑，北京高溫傳感器線圈。由基爾霍夫電壓定律有式中ω為線圈與金屬導(dǎo)體的互感系數(shù)。可得等效阻抗為式中Req為產(chǎn)生電渦流效應(yīng)后線圈的等效電阻，Leq為產(chǎn)生電渦流效應(yīng)后線圈的等效電感。由于電渦流的影響，北京高溫傳感器線圈，線圈復(fù)阻抗的實(shí)部（等效電阻）增大、虛部（等效電感）減小。因此，線圈的等效品質(zhì)因數(shù)下降。電渦流式傳感器的等效電氣參數(shù)都是互感系數(shù)M2的函數(shù)。通?？偸抢闷涞刃щ姼械淖兓M成測(cè)量電路，因此，電渦流式傳感器屬于電感式（互感式）傳感器。三、測(cè)量電路用于電渦流傳感器的測(cè)量電路主要有調(diào)頻式，調(diào)幅式測(cè)量電路兩種。1、調(diào)頻式測(cè)量電路調(diào)頻式測(cè)量電路，傳感器線圈作為組成LC振蕩器的電感元件，當(dāng)傳感器等效電感在渦流影響下因被測(cè)量變化而變化時(shí)，將導(dǎo)致振蕩器的振蕩頻率發(fā)生變化，該頻率可直接由數(shù)字頻率計(jì)測(cè)得，或通過頻率-電壓變換后用數(shù)字電壓表測(cè)量出對(duì)應(yīng)的電壓。2、調(diào)幅式測(cè)量電路調(diào)幅式測(cè)量電路，北京高溫傳感器線圈，由傳感器線圈、電容和石英晶體組成的石英晶體振蕩電路。傳感器線圈線圈，無錫東英電子有限公司。北京高溫傳感器線圈</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京高溫傳感器線圈,傳感器線圈" src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637385478171072618/1595196.png"></div><p> 7203904，2015年，其提供非?？焖俚姆抡?25個(gè)目標(biāo)位置需要數(shù)十秒)?？梢詫?duì)此類算法進(jìn)行調(diào)整，以仿真pcb上的跡線和感應(yīng)傳感器應(yīng)用。具體地，仿真可以輸入pcb跡線的幾何形狀、金屬目標(biāo)的幾何形狀、氣隙、金屬目標(biāo)在由跡線形成的線圈上的平移/旋轉(zhuǎn)、以及另外的固定導(dǎo)體，其例如可用于仿真pct或傳感器附近的其他導(dǎo)體的接地層。仿真可以輸出線圈上方的金屬目標(biāo)的一系列位置處來自線圈的仿真電壓。在一些實(shí)施例中，在本申請(qǐng)中也可以使用有限元方法(fem)或類似方法。然而，在一些情況下，執(zhí)行這些仿真可能需要大量的計(jì)算時(shí)間。可以預(yù)期，相對(duì)于上述bim方法，每個(gè)傳感器目標(biāo)位置的計(jì)算可能使用兩個(gè)或更多個(gè)數(shù)量級(jí)的計(jì)算時(shí)間。此外，可能需要針對(duì)每個(gè)目標(biāo)位置從頭開始重建計(jì)算域的網(wǎng)格。而且，由于長(zhǎng)而細(xì)的導(dǎo)體需要大量的網(wǎng)格元素來獲得精確的解，因此這些技術(shù)的準(zhǔn)確性可能受限。這些計(jì)算也可能受到存儲(chǔ)器和計(jì)算時(shí)間資源的限制。圖10a示出算法700的仿真步驟704的示例。實(shí)際上，如圖7a的示例中所示的算法700基本上補(bǔ)償了上述的非理想性，并因此產(chǎn)生與提供精確的位置定位系統(tǒng)的問題的物理學(xué)相容的佳的可能的解。為此，開發(fā)了位置定位系統(tǒng)的一種真實(shí)高效的數(shù)值模型。直銷傳感器線圈效果傳感器線圈，無錫東英電子有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京高溫傳感器線圈,傳感器線圈" src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637385478338396798/7186098.png"></div><p> 所繞的線圈的圈數(shù)我們一般把它稱為線圈的“匝數(shù)“。主要性能指標(biāo)電感線圈的性能指標(biāo)主要就是電感量的大小。另外，繞制電感線圈的導(dǎo)線一般來說總具有一定的電阻，通常這個(gè)電阻是很小的，可以忽略不記。但當(dāng)在一些電路中流過的電流很大時(shí)線圈的這個(gè)很小的電阻就不能忽略了，因?yàn)楹艽蟮碾娏鲿?huì)在這個(gè)線圈上消耗功率，引起線圈發(fā)熱甚至燒壞，所以有些時(shí)候還要考慮線圈能承受的電功率。電感量電感量L表示線圈本身固有特性，與電流大小無關(guān)。除專門的電感線圈（色碼電感）外，電感量一般不專門標(biāo)注在線圈上，而以特定的名稱標(biāo)注。電感量也稱自感系數(shù)，是表示電感器產(chǎn)生自感應(yīng)能力的一個(gè)物理量。電感器電感量的大小，主要取決于線圈的圈數(shù)（匝數(shù)）、繞制方式、有無磁心及磁心的材料等等。通常，線圈圈數(shù)越多、繞制的線圈越密集，電感量就越大。有磁心的線圈比無磁心的線圈電感量大；磁心導(dǎo)磁率越大的線圈，電感量也越大。電感量的基本單位是亨利（簡(jiǎn)稱亨），用字母"H"表示。常用的單位還有毫亨（mH）和微亨（μH），它們之間的關(guān)系是：1H=1000mH1mH=1000μH感抗電感線圈對(duì)交流電流阻礙作用的大小稱感抗XL，單位是歐姆,符號(hào)Ω。</p><p> 如圖3a所示，線圈112由pcb322的頂側(cè)上的跡線302和pcb322的底側(cè)上的跡線304形成。跡線302和跡線304通過穿過pcb322而形成的通孔306電接合。如圖3a所示，通孔306、頂側(cè)跡線302和底側(cè)跡線304被布置為允許形成余弦定向線圈112。例如，部分310和部分312允許線圈112交叉以形成環(huán)路114、環(huán)路116和環(huán)路118，同時(shí)在相交處將跡線分離。如進(jìn)一步示出的，部分314、部分316、部分318和部分320允許余弦定向線圈112覆蓋在pcb上。然而，通孔306和pcb322的相對(duì)的兩側(cè)上的跡線302和跡線304的存在降低了由線圈104檢測(cè)到的信號(hào)的有效幅度。有效地，通孔306在發(fā)射線圈106和信號(hào)線圈104之間形成間隙距離，這本身對(duì)位置定位系統(tǒng)的準(zhǔn)確性有很大的影響。這還與以下相結(jié)合：由于在pcb322的頂側(cè)和底側(cè)上都形成了信號(hào)線圈104的跡線，而導(dǎo)致的金屬目標(biāo)124和pcb322上的信號(hào)線圈104之間的有效氣隙的增加。圖3b示出另一個(gè)關(guān)于對(duì)稱性的問題，其中，發(fā)射線圈106與接收線圈104是不對(duì)稱的。在圖3b所示的情況下，接收線圈104不以發(fā)射線圈106為中心，并且形成與接收線圈104和發(fā)射線圈106的連接的跡線也不對(duì)稱。圖3c示出由發(fā)射線圈106生成的磁場(chǎng)強(qiáng)度的不均勻性。如圖3c所示。常開傳感器線圈，無錫東英電子有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京高溫傳感器線圈,傳感器線圈" src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637385478207869513/354421.png"></div><p> 2）線圈在安裝前，要進(jìn)行外觀檢查使用前，應(yīng)檢查線圈的結(jié)構(gòu)是否牢固，線匝是否有松動(dòng)和松脫現(xiàn)象，引線接點(diǎn)有無松動(dòng)，磁芯旋轉(zhuǎn)是否靈活，有無滑扣等。這些方面都檢查合格后，再進(jìn)行安裝。（3）線圈在使用過程需要微調(diào)的，應(yīng)考慮微調(diào)方法有些線圈在使用過程中，需要進(jìn)行微調(diào)，依靠改變線圈圈數(shù)又很不方便，因此，選用時(shí)應(yīng)考慮到微調(diào)的方法。例如單層線圈可采用移開靠端點(diǎn)的數(shù)困線圈的方法，即預(yù)先在線圈的一端繞上3圈～4圈，在微調(diào)時(shí)，移動(dòng)其位置就可以改變電感量。實(shí)踐證明，這種調(diào)節(jié)方法可以實(shí)現(xiàn)微調(diào)±2%－±3%的電感量。應(yīng)用在短波和超短波回路中的線圈，常留出半圈作為微調(diào)，移開或折轉(zhuǎn)這半圈使電感量發(fā)生變化，實(shí)現(xiàn)微調(diào)。多層分段線圈的微調(diào)，可以移動(dòng)一個(gè)分段的相對(duì)距離來實(shí)現(xiàn)，可移動(dòng)分段的圈數(shù)應(yīng)為總?cè)?shù)的20%－30%。實(shí)踐證明：這種微調(diào)范圍可達(dá)10%－15%。具有磁芯的線圈，可以通過調(diào)節(jié)磁芯在線圈管中的位置，實(shí)現(xiàn)線圈電感量的微調(diào)。（4）使用線圈應(yīng)注意保持原線圈的電感量線圈在使用中，不要隨便改變線圈的形狀。大小和線圈間的距離，否則會(huì)影響線圈原來的電感量。尤其是頻率越高，即圈數(shù)越少的線圈。所以，在電視機(jī)中采用的高頻線圈。傳感器線圈種類，無錫東英電子有限公司。北京高溫傳感器線圈</p><p style="text-indent:25px">燃?xì)鈧鞲衅骶€圈，無錫東英電子有限公司。北京高溫傳感器線圈</p><p> 電渦流測(cè)量原理是一種非接觸式測(cè)量原理。這種類型的傳感器特別適合測(cè)量快速的位移變化，且無需在被測(cè)物體上施加外力。而非接觸測(cè)量對(duì)于被測(cè)表面不允許接觸的情況，或者需要傳感器有超長(zhǎng)壽命的應(yīng)用領(lǐng)用意義重大。嚴(yán)格來講，電渦流測(cè)量原理應(yīng)該屬于一種電感式測(cè)量原理。電渦流效應(yīng)源自振蕩電路的能量。而電渦流需要在可導(dǎo)電的材料內(nèi)才可以形成。給傳感器探頭內(nèi)線圈提供一個(gè)交變電流，可以在傳感器線圈周圍形成一個(gè)磁場(chǎng)。如果將一個(gè)導(dǎo)體放入這個(gè)磁場(chǎng)，根據(jù)法拉第電磁感應(yīng)定律，導(dǎo)體內(nèi)會(huì)激發(fā)出電渦流。根據(jù)楞茲定律，電渦流的磁場(chǎng)方向與線圈磁場(chǎng)正好相反，而這將改變探頭內(nèi)線圈的阻抗值。而這個(gè)阻抗值的變化與線圈到被測(cè)物體之間的距離直接相關(guān)。傳感器探頭連接到控制器后，控制器可以從傳感器探頭內(nèi)獲得電壓值的變化量，并以此為依據(jù)，計(jì)算出對(duì)應(yīng)的距離值。電渦流測(cè)量原理可以運(yùn)用于所有導(dǎo)電材料。由于電渦流可以穿透絕緣體，即使表面覆蓋有絕緣體的金屬材料，也可以作為電渦流傳感器的被測(cè)物體。獨(dú)特的圈式繞組設(shè)計(jì)在實(shí)現(xiàn)傳感器外形緊湊的同時(shí)，可以滿足其運(yùn)轉(zhuǎn)于高溫測(cè)量環(huán)境的要求。所有德國米銥的電渦流傳感器都可以承受有灰塵，潮濕，油污和壓力的測(cè)量環(huán)境。盡管如此。北京高溫傳感器線圈</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3142399.html</p></div></div></div></div></div><div id="a0wkmgw" class="page-right twoColRt"><div id="4wgw2kc" class="box01 margin10 clearfix"><h3><a 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