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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>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>昆明大眾藍(lán)牙模塊廠(chǎng),BLE藍(lán)牙模塊</p><p><span>***更新：</span>2021-01-31 07:14:23</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="k2ijgn2" 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(huà): </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(jī): </span>021-31775145</p><p><span>地址: </span>羅城路530號(hào)住大商務(wù)樓A樓403室</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8ovxzw2" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ajli2of" class="box"><p><p style="text-indent:25px">在物聯(lián)網(wǎng)產(chǎn)業(yè)中，藍(lán)牙或許是無(wú)線(xiàn)通訊應(yīng)用中較好的選擇，原因是基于藍(lán)牙技術(shù)受眾面廣闊，以低功耗、智能化、低成本等特性，在物聯(lián)網(wǎng)應(yīng)用市場(chǎng)中占據(jù)主要的位置。而藍(lán)牙模塊正是集成了藍(lán)牙功能的PCBA板，一般是由PCB板，昆明大眾藍(lán)牙模塊廠(chǎng)、芯片、**元器件構(gòu)成，用于代替數(shù)據(jù)線(xiàn)纜來(lái)進(jìn)行小范圍的短距離無(wú)線(xiàn)通訊。在BLE藍(lán)牙模塊上，應(yīng)選擇合理的元器件，特別是選擇硬件抗干擾方法的過(guò)程中，昆明大眾藍(lán)牙模塊廠(chǎng)，應(yīng)當(dāng)以系統(tǒng)相關(guān)的參數(shù)為基礎(chǔ)來(lái)進(jìn)行相關(guān)元器件的選擇，昆明大眾藍(lán)牙模塊廠(chǎng)，這樣會(huì)極大的提供整個(gè)系統(tǒng)的干擾性能。BLE藍(lán)牙模塊在軟件上符合大部分用戶(hù)的需求。昆明大眾藍(lán)牙模塊廠(chǎng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明大眾藍(lán)牙模塊廠(chǎng),BLE藍(lán)牙模塊" src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345501712343750/6318681.png"></div><p style="text-indent:25px">要實(shí)現(xiàn)一個(gè)BLE應(yīng)用，先需要一個(gè)支持BLE射頻的芯片，然后還需要提供一個(gè)與此芯片配套的BLE協(xié)議棧，后在協(xié)議棧上開(kāi)發(fā)自己的應(yīng)用?？梢钥闯鯞LE協(xié)議棧是連接芯片和應(yīng)用的橋梁，是實(shí)現(xiàn)整個(gè)BLE應(yīng)用的關(guān)鍵。那BLE協(xié)議棧具體包含哪些功能呢？簡(jiǎn)單來(lái)說(shuō)，BLE協(xié)議棧主要用來(lái)對(duì)你的應(yīng)用數(shù)據(jù)進(jìn)行層層封包，以生成一個(gè)滿(mǎn)足BLE協(xié)議的空中數(shù)據(jù)包，也就是說(shuō)，把應(yīng)用數(shù)據(jù)包裹在一系列的幀頭（header）和幀尾（tail）中。PHY層（Physical layer物理層）。PHY層用來(lái)指定BLE所用的無(wú)線(xiàn)頻段，調(diào)制解調(diào)方式和方法等。PHY層做得好不好，直接決定整個(gè)BLE芯片的功耗，靈敏度以及selectivity等射頻指標(biāo)。廣州藍(lán)牙ble模組生產(chǎn)供應(yīng)BLE藍(lán)牙模塊主要應(yīng)用：定位標(biāo)簽，資產(chǎn)追蹤，運(yùn)動(dòng)及健身傳感器，醫(yī)療傳感器，智能手表，遙控器，玩具等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明大眾藍(lán)牙模塊廠(chǎng),BLE藍(lán)牙模塊" src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345501429042969/8005270.png"></div><p style="text-indent:25px">藍(lán)牙5.0BLE模塊：藍(lán)牙5.0在低功耗技術(shù)(BLE)可提供2倍的傳輸速率、8倍的廣播能力、4倍的覆蓋范圍，尤其藍(lán)牙5.0還針對(duì)物聯(lián)網(wǎng)進(jìn)行了底層優(yōu)化，力求以更低的功耗和更強(qiáng)的性能為物聯(lián)網(wǎng)服務(wù)，因此，越來(lái)越多的物聯(lián)網(wǎng)應(yīng)用、智能家居方案開(kāi)始將藍(lán)牙模塊納入選型范圍內(nèi)。藍(lán)牙模塊的分類(lèi)按照應(yīng)用和支持協(xié)議劃分主要分為兩種：經(jīng)典藍(lán)牙模塊（BT）：泛指支持藍(lán)牙協(xié)議在4.0以下的模塊，一般用于數(shù)據(jù)量比較大的傳輸，如：語(yǔ)音、音樂(lè)等較高數(shù)據(jù)量傳輸。經(jīng)典藍(lán)牙模塊可再細(xì)分為：傳統(tǒng)藍(lán)牙模塊和高速藍(lán)牙模塊。傳統(tǒng)藍(lán)牙模塊在2004年推出，主要表示是支持藍(lán)牙2.1協(xié)議的模塊，在智能手機(jī)爆發(fā)的時(shí)期得到普遍支持。</p><p style="text-indent:25px">BLE廣播與掃描：設(shè)備B不斷發(fā)送廣播信號(hào)給手機(jī)（Observer），如果手機(jī)不開(kāi)啟掃描窗口，手機(jī)是收不到設(shè)備B的廣播的，如下圖所示，不僅手機(jī)要開(kāi)啟射頻接收窗口，而且只有手機(jī)的射頻接收窗口跟廣播發(fā)送的發(fā)射窗口匹配成功，而且廣播射頻通道和手機(jī)掃描射頻通道是同一個(gè)通道，手機(jī)才能收到設(shè)備B的廣播信號(hào)。也就是說(shuō)，如果設(shè)備B在37通道發(fā)送廣播包，而手機(jī)在掃描38通道，那么即使他們倆的射頻窗口匹配，兩者也是無(wú)法進(jìn)行通信的。由于這種匹配成功是一個(gè)概率事件，因此手機(jī)掃到設(shè)備B也是一個(gè)概率事件，也就是說(shuō)，手機(jī)有時(shí)會(huì)很快掃到設(shè)備B，比如只需要一個(gè)廣播事件，手機(jī)有時(shí)又會(huì)很慢才能掃到設(shè)備B，比如需要10個(gè)廣播事件甚至更多。藍(lán)牙模塊的接口分串行接口、USB接口、數(shù)字IO口、模擬IO口、SPI編程口及語(yǔ)音接口。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明大眾藍(lán)牙模塊廠(chǎng),BLE藍(lán)牙模塊" src="https://tyunfile.71360.com/UploadFile/shpsdzkj/637345502002519531/6368046.png"></div><p style="text-indent:25px">藍(lán)牙模塊根據(jù)應(yīng)用和支持協(xié)議劃分主要分為經(jīng)典藍(lán)牙模塊（BT）和低功耗藍(lán)牙模塊（BLE）。低功耗藍(lán)牙技術(shù)使用與傳統(tǒng)藍(lán)牙技術(shù)相同的自適應(yīng)跳頻（AFH）技術(shù)，因而能確保低功耗藍(lán)牙能夠在住宅、工業(yè)與醫(yī)療應(yīng)用中的“嘈雜”射頻環(huán)境中維持穩(wěn)定的傳輸。為了大程度地減少使用AFH的成本與功耗，低功耗藍(lán)牙技術(shù)已將通道數(shù)量從傳統(tǒng)藍(lán)牙技術(shù)的79個(gè)1MHz通道減少至40個(gè)2MHz的帶寬通道。相比傳統(tǒng)藍(lán)牙技術(shù)，低功耗藍(lán)牙技術(shù)所增加的一項(xiàng)新功能就是“廣播”功能，通過(guò)這項(xiàng)功能，從設(shè)備可以向主設(shè)備發(fā)送數(shù)據(jù)。藍(lán)牙低能耗技術(shù)是短距離、低成本、可互操作性的無(wú)線(xiàn)技術(shù)。昆明大眾藍(lán)牙模塊廠(chǎng)</p><p style="text-indent:25px">BLE藍(lán)牙模塊普遍應(yīng)用于各種各類(lèi)智能設(shè)備。昆明大眾藍(lán)牙模塊廠(chǎng)</p><p style="text-indent:25px">BLE（Bluetooh Low Energy）藍(lán)牙低能耗技術(shù)是短距離、低成本、可互操作性的無(wú)線(xiàn)技術(shù)，它利用許多智能手段大限度地降低功耗。BLE技術(shù)的工作模式非常適合用于從微型無(wú)線(xiàn)傳感器（每半秒交換一次數(shù)據(jù)）或使用完全異步通信的遙控器等其它外設(shè)傳送數(shù)據(jù)。這些設(shè)備發(fā)送的數(shù)據(jù)量非常少（通常幾個(gè)字節(jié)），而且發(fā)送次數(shù)也很少（例如每秒幾次到每分鐘一次，甚至更少）。BLE協(xié)議棧的結(jié)構(gòu)和配置：1、協(xié)議有兩個(gè)部分組成：Controller和Host2、Profiles和應(yīng)用總是基于GAP和GATT之上；3、在單芯片方案中，Controller和Host，profiles，和應(yīng)用層都在同一片芯片中；4、在網(wǎng)絡(luò)控制器模式中，Host和Controller是在一起運(yùn)行的，但是應(yīng)用和profiles在另外一個(gè)器件上，比如PC或者其他微控制器，可以通過(guò)UART，USB進(jìn)行操作；5、在雙芯片模式中，Controller運(yùn)行在一個(gè)控制器，而應(yīng)用層，profiles和Host是運(yùn)行在另外一個(gè)控制器上。昆明大眾藍(lán)牙模塊廠(chǎng)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3092441.html</p></div></div></div></div></div><div id="daspr2w" class="page-right twoColRt"><div id="3eb7xzb" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="s7suvme" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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