選擇高效的物聯(lián)網(wǎng)傳感器融合設(shè)計(jì)的MCU外圍設(shè)備

　　傳感器正在成為一個(gè)無處不在的元素，在電子基礎(chǔ)設(shè)施的轉(zhuǎn)變到物聯(lián)網(wǎng)（物聯(lián)網(wǎng)）。傳感器將提供的數(shù)據(jù)用于管理和控制電子系統(tǒng)在汽車，家庭，工作場(chǎng)所，工廠的地板，以及幾乎無處不在。傳感器不僅在他們的范圍內(nèi)擴(kuò)大，而且在他們的能力。令人興奮的新功能可以創(chuàng)建時(shí)，多個(gè)傳感器的共同定位，可以交換和提高個(gè)人測(cè)量。在這些類型的設(shè)計(jì)傳感器可以實(shí)現(xiàn)先進(jìn)的功能，通常被描述為傳感器“融合”，提供新的和創(chuàng)新的能力。

　　傳感器融合算法已經(jīng)在化工過程控制系統(tǒng)中實(shí)現(xiàn)了幾十年，所以這個(gè)概念并不是真正的新。大多數(shù)化工過程控制系統(tǒng)需要各種傳感器讀數(shù)，以確定正確設(shè)置的值，流量，或設(shè)置。你不會(huì)考慮管理化學(xué)過程而不感覺壓力、溫度和體積，對(duì)嗎？（記得PV = nRT？）

　　It’s easy to require that your new sensor-fusion design includes a variety of sensors so your fancy new algorithm has all the data it’s going to need; but at some point your MCU will need to connect to all these sensors while providing the data at the rates your algorithm will require. Oh， and by the way you need to retain lots of MCU compute capability， so the processor can’t be bothered with managing all the sensor data in real time.

　　Fortunately， MCU manufacturers have been extending the capabilities of their MCU peripherals， so that designs can use the full capabilities of multiple interfaces without burdening the processor with a significant amount of overhead. This article will look at an example implementation of a sensor-fusion design， to illustrate how selecting the right peripheral for each sensor can be critical to your design’s success.