實現無線連接的物聯網應用在電力預算有效的方式

　　物聯網的承諾，以提供顯著的變化，我們管理和互動的方式與我們的家園和辦公室。它還預測，以改變企業提供服務的方式，特別是在商業和工業部門，以前資本密集型設備可以作為一個服務出租給客戶交付。雖然這個概念很容易理解，但考慮到這一點，組織的影響將在很大程度上取決于許多不同數據元素的持續和可靠的數據收集。這將是一個工作的無線連接微控制器為基礎的傳感器，許多電池操作和長期留在原地。供應這樣的傳感器數據將需要設計使用超低功耗無線收發器微控制器，不僅具有極低的功率待機電流，但也采用節能技術，延長工作壽命從一個單一的硬幣電池。這種技術可以實現在硬件或軟件或兩者的混合物，但顯然有一些其他更廣泛的因素，設計師需要考慮之前，準備選擇個別設備。

　　One of the key factors will be the wireless protocol selected. This will， in the main， be already determined by the amount of data to be transferred at a time. While Wi-Fi is a natural choice for moving large amounts of data， it is power hungry and for typical sensing applications it will be down to methods such as Bluetooth Smart and ZigBee along with other 802.15.4 sub-GHz techniques that will be the preferred choice. When selecting devices， engineers should also be aware of the various aspects that make up the overall power consumption profile of a device. There is a balance between computing performance and the power profile. You might use a more powerful device that offers more compute resources even though it might consume more power simply in order to complete the calculation and transfer tasks much quicker. Also， do not forget some communications stacks require the radio to operate longer for a given data packet so it is not just the standing consumption of the combined wireless MCU.