用低能耗應(yīng)用和系統(tǒng)塑造無線未來

　　隨著移動(dòng)設(shè)備的使用越來越多，以及與諸如傳感器節(jié)點(diǎn)之類的小設(shè)備的信息交換需求不斷增加，對(duì)連接選項(xiàng)的要求也越來越高。下面的文章介紹了物聯(lián)網(wǎng)的新趨勢(shì)，低功耗和移動(dòng)連接，無線技術(shù)選擇，無線共存，以及潛在的低能耗應(yīng)用的需求。

　　物聯(lián)網(wǎng)、物聯(lián)網(wǎng)、嵌入式網(wǎng)絡(luò)

　　有一種明顯的趨勢(shì)，即各種設(shè)備和設(shè)備之間的信息交換正在增長。例如，需要不斷監(jiān)測(cè)設(shè)備使用、能源消耗、庫存供應(yīng)和設(shè)備的遠(yuǎn)程控制。這些增加的需求遍及多個(gè)行業(yè)，包括以下需求增長的例子：

　　醫(yī)療應(yīng)用：創(chuàng)建定制藥物，遠(yuǎn)程監(jiān)控和警報(bào)

　　建筑物：軌道能耗、安全監(jiān)控

　　工業(yè)應(yīng)用：遠(yuǎn)程控制，與跟蹤系統(tǒng)的信息交換

　　基礎(chǔ)設(shè)施與環(huán)境：監(jiān)測(cè)交通、空氣和水污染

　　With yearly shipments of more than 10 billion microcontrollers that all can exchange information locally or through the Internet， a huge variety of so called “intelligent devices” are enabled. These devices include motion sensors， pool pumps， gas/electric meters， and street lights.

　　Based on the rapid infrastructure coverage and Internet access， all these devices can be accessed over the Internet. This evolution is called “Internet of Things，” “Web of Things，” or “Embedded Web” and typically requires a local low-power wireless connection besides the Internet connection. For most such applications and solutions， a gateway is required to connect sensor nodes to the Internet via a local infrastructure or over a cellular network.