旋轉(zhuǎn)機(jī)械內(nèi)部的無線連接

　　無線傳感器存在的一個(gè)關(guān)鍵需求是，可以放置在工業(yè)機(jī)械、飛機(jī)噴氣發(fā)動(dòng)機(jī)和風(fēng)力渦輪發(fā)電機(jī)等旋轉(zhuǎn)部件上，以便對(duì)關(guān)鍵部件進(jìn)行健康監(jiān)測(cè)。無線傳感器因其相對(duì)較低的成本和功率要求，在旋轉(zhuǎn)機(jī)械狀態(tài)監(jiān)測(cè)中得到越來越廣泛的應(yīng)用。使用他們的無線連接，可以將數(shù)據(jù)發(fā)送到一個(gè)工廠管理網(wǎng)絡(luò)或推到云，它可以被用來遠(yuǎn)程監(jiān)控關(guān)鍵旋轉(zhuǎn)部件從世界上任何地方，給工程師設(shè)備故障預(yù)警和允許他們優(yōu)化檢修計(jì)劃，減少停機(jī)時(shí)間。

　　其他潛在的應(yīng)用包括能夠?qū)崟r(shí)平衡負(fù)載的洗衣機(jī)、監(jiān)測(cè)熱量和控制潤(rùn)滑油噴射的鉆頭、監(jiān)測(cè)起落架軸承摩擦的傳感器等等。

　　However， placing wireless sensors on the actual rotating parts is a nontrivial task. While power and signal can pass through a simple series of brushes and commutators， this is not a good approach when a more precise solution exists， even if it is more complicated. What is more， in manufacturing applications the magnetic field present in the machine can block signals transmitted between the wireless sensors.

　　This article looks at wireless techniques that allow low-power sensors and data acquisition systems inside rotating machines to communicate wirelessly. All parts， datasheets， reference designs， and development kits referenced here can be found online at Digi-Key’s website.