物聯網的快速增長元素是無線傳感器。這些設備的眼睛和耳朵的物聯網，并提供大量的數據，分析和大數據應用程序需要作出明智的決定。在工業應用中，傳感器可以提供準確的數據，優化化學處理和材料傳輸，支持更高水平的自動化，提高能源網格效率，使主機的其他應用程序尚未交付。

　　MCUs將在無線傳感器應用的心臟。新的設備，簡化了無線傳感器連接的實現使得它比以往任何時候都更容易添加這些功能，即使是最謙虛的價格體系。本文將看看這些新設備提供的一些實現選項，來說明將數據從MCU遷移到云中是多么容易。

　　Wireless MCUs come online

　　Recently introduced MCUs are adding integrated wireless communications functions that can connect to a wide variety of wireless standards. These new devices take one of two common approaches to implementing wireless communications. Some devices use a flexible wireless subsystem that can implement a variety of standards. Other devices focus on one or two common and similar standards to optimize their solution for specific applications.

　　Flexible implementation often provides a programmable radio “front end” that manages all of the generic wireless “building blocks，” such as modulation options， that include Gaussian frequency-shift keying （GFSK）， frequency-shift keying （FSK）， four-level GFSK （4GFSK）， four-level FSK （4FSK）， and on-off keying （OOK）。 Other common hardware blocks include low-noise amplifiers， mixers， programmable gain amplifiers， an analog-to-digital converter， a digital signal processor and packet-handling logic， and FIFO storage. These wireless building blocks can be used， via MCU software， to implement a variety of radio-based standards. Often the MCU manufacturer provides high-level applications programming interfaces （APIs） that implement common standards to simplify development.