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连接工业传感器应用到云机
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物联网的快速增长元素是无线传感器。这些设备的眼睛和耳朵的物联网，并提供大量的数据，分析和大数据应用程序需要作出明智的决定。在工业应用中，传感器可以提供准确的数据，优化化学处理和材料传输，支持更高水平的自动化，提高能源网格效率，使主机的其他应用程序尚未交付。
MCUs将在无线传感器应用的心脏。新的设备，简化了无线传感器连接的实现使得它比以往任何时候都更容易添加这些功能，即使是最谦虚的价格体系。本文将看看这些新设备提供的一些实现选项，来说明将数据从MCU迁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.
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