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id="w29nrxn" class="proBig"><div id="guwn2c2" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345503298828125/1657899.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="cqxt9mg" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345503298828125/1657899.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="axtkyza" 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(guān)鍵詞：</span>昆明通用433m無線模塊,433M無線通訊模塊</p><p><span>***更新：</span>2021-01-17 00:23:22</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="x7djnjf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海磐笙電子科技有限公司</a></p><p><span>聯(lián)系人：</span>丁白蘭</p><p><span>郵箱: </span>258787059@qq.com</p><p><span>電話: </span>15002148001</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.panshion.cn</p><p><span>手機: </span>021-31775145</p><p><span>地址: </span>羅城路530號住大商務(wù)樓A樓403室</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="mahtk8p" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wz3dplx" class="box"><p><p style="text-indent:25px">單片機對接收模塊的干擾：單片機模擬2262時一般都很正常，然而單片機模擬2272解碼時通常會發(fā)現(xiàn)遙控距離縮短很多，這是因為單片機的時鐘頻率的倍頻都會對接收模塊產(chǎn)生干擾，51系列的單片機電磁干擾比較大，2051稍微小一些，昆明通用433m無線模塊，PIC系列的比較小，我們需要采用一些抗干擾措施來減小干擾。比如單片機和遙控接收電路分別用兩個5伏電源供電，將接收板單獨用一個78L05供電，單片機的時鐘區(qū)遠(yuǎn)離接收模塊，昆明通用433m無線模塊，降低單片機的工作頻率，昆明通用433m無線模塊，中間加入屏蔽等。433m無線模塊具有較好的發(fā)射效果。昆明通用433m無線模塊</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明通用433m無線模塊,433M無線通訊模塊" src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345503298828125/1657899.png"></div><p style="text-indent:25px">在用戶組建好一個通訊網(wǎng)絡(luò)之后，常常因為系統(tǒng)的需要增加新的設(shè)備。如果采用有線的方式，需要重新的布線，施工比較麻煩，而且還有可能破壞原來的通訊線路，但是如果采用無線數(shù)傳電臺建立**無線數(shù)據(jù)傳輸方式，只需將新增設(shè)備與無線數(shù)傳電臺相連接就可以實現(xiàn)系統(tǒng)的擴充了，相比之下有更好的擴展性。設(shè)備維護：有線通訊鏈路的維護需沿線路檢查，出現(xiàn)故障時，一般很難及時找出故障點，而采用無線數(shù)傳模塊建立**無線數(shù)據(jù)傳輸方式只需維護數(shù)傳模塊，出現(xiàn)故障時則能快速找出原因，恢復(fù)線路正常運行。無線數(shù)據(jù)傳輸方式相比于有線通訊的缺點：可靠性有待改進、受環(huán)境影響較大。麗水哪里有433m無線通信模塊天線是通信系統(tǒng)的重要組成部分。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明通用433m無線模塊,433M無線通訊模塊" src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345503190322266/6461766.png"></div><p style="text-indent:25px">433m無線模塊當(dāng)發(fā)射電壓為3V時，空曠地傳輸距離約20～50米，發(fā)射功率較小，當(dāng)電壓5V時約100～200米，當(dāng)電壓9V時約300～500米，當(dāng)發(fā)射電壓為12V時，為較佳工作電壓，具有較好的發(fā)射效果，發(fā)射電流約60毫安，空曠地傳輸距離700～800米，發(fā)射功率約500毫瓦。當(dāng)電壓大于12V時功耗增大，有效發(fā)射功率不再明顯提高。這套模塊的特點是發(fā)射功率比較大，傳輸距離比較遠(yuǎn)，比較適合惡劣條件下進行通訊。天線建議選用25厘米長的導(dǎo)線，遠(yuǎn)距離傳輸時建議是能夠豎立起來，因為無線電信號傳輸時會受很多因素的影響，所以一般實用距離只有標(biāo)稱距離的一半甚至更少，這點需要開發(fā)時注意。</p><p style="text-indent:25px">433m無線模塊的數(shù)據(jù)模塊采用ASK方式調(diào)制，以降低功耗，當(dāng)數(shù)據(jù)信號停止時發(fā)射電流降為零，數(shù)據(jù)信號與發(fā)射模塊輸入端可以用電阻或者直接連接而不能用電容耦合，否則發(fā)射模塊將不能正常工作。數(shù)據(jù)電平應(yīng)接近數(shù)據(jù)模塊的實際工作電壓，以獲得較高的調(diào)制效果。發(fā)射發(fā)射模塊較好能垂直安裝在主板的邊緣，應(yīng)離開周圍器件5mm以上，以免受分布參數(shù)影晌。模塊的傳輸距離與調(diào)制信號頻率及幅度，發(fā)射電壓及電池容量，發(fā)射天線，接收機的靈敏度，收發(fā)環(huán)境有關(guān)。一般在開闊區(qū)較大發(fā)射距離約800米，在有障礙的情況下，距離會縮短，由于無線電信號傳輸過程中的折射和反射會形成一些死區(qū)及不穩(wěn)定區(qū)域，不同的收發(fā)環(huán)境會有不同的收發(fā)距離。當(dāng)模塊在使用中發(fā)現(xiàn)距離不夠的時候，經(jīng)常建議選用符合的天線。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明通用433m無線模塊,433M無線通訊模塊" src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345502805673828/9875741.png"></div><p style="text-indent:25px">無線接收模塊的安裝使用：無線發(fā)射模塊建議要垂直安裝在主板的邊緣，應(yīng)離開周圍器件5mm以上，以免受分布參數(shù)影晌。無線收發(fā)模塊的傳輸距離與調(diào)制信號頻率及幅度，發(fā)射電壓及電池容量，發(fā)射天線，接收機的靈敏度，收發(fā)環(huán)境有關(guān)。一般在開闊區(qū)較大發(fā)射距離約800米，在有障礙的情況下，距離會縮短，由于無線電信號傳輸過程中的折射和反射會形成一些死區(qū)及不穩(wěn)定區(qū)域，無線收發(fā)模塊在不同的收發(fā)環(huán)境會有不同的收發(fā)距離。無線收發(fā)模塊具有芯片體積小，工業(yè)級的設(shè)計，傳輸速率高窄帶抗干擾性強，接收靈敏度高，功率大，傳輸穩(wěn)定可靠，距離遠(yuǎn)，wifi控制等特點。無線通信模塊是利用無線技術(shù)進行傳輸?shù)囊环N模塊。麗水哪里有433m無線通信模塊</p><p style="text-indent:25px">超外差接收模塊適合比較惡劣的環(huán)境下全天候工作。昆明通用433m無線模塊</p><p style="text-indent:25px">433M無線通信模塊存在著人為干擾因素。人為產(chǎn)生的電磁干擾根本原因是導(dǎo)體中有電壓或電流的變化，即較大dv/dt能夠使導(dǎo)體產(chǎn)生電磁波輻射。由于導(dǎo)體中的dv/dt或di/at會產(chǎn)生伴隨電磁輻射。會對電磁環(huán)境造成污染。凡是有電壓電流突變的場合，肯定會有電磁干擾存在?？梢酝ㄟ^將無線模塊通訊終端做成一個裝置，也就是箱體結(jié)構(gòu)。無線設(shè)備起到的不**是傳輸效果，也包含了數(shù)據(jù)處理能力，自己可以形成一套完整且**的系統(tǒng)。外部電路與無線通訊裝置均采用了完善的隔離電路，保證將外部電路包括容性的干擾到對終端內(nèi)部電路的運行降到較低。昆明通用433m無線模塊</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2875632.html</p></div></div></div></div></div><div id="kt3rnea" class="page-right twoColRt"><div id="cw38uvm" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="p8vw8ri" 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(yīng)" 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(yīng)</p></a></div><div id="jsjklcj" 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