傳感器模塊的實(shí)現(xiàn)

　　物聯(lián)網(wǎng)的承諾，使許多新的應(yīng)用程序和服務(wù)，為消費(fèi)者和企業(yè)。而作為消費(fèi)者，我們看到物聯(lián)網(wǎng)進(jìn)入我們的生活慢慢的開始，許多專家認(rèn)為，行業(yè)將受益最多的是那些在制造業(yè)中，這個(gè)詞語(yǔ)的工業(yè)物聯(lián)網(wǎng)（IIoT）已成為流行?；谖锫?lián)網(wǎng)應(yīng)用的任何一樣，它會(huì)涉及到遠(yuǎn)程傳感器和執(zhí)行器的軍隊(duì)將IIoT的生活。IIoT將產(chǎn)量的制造和工藝操作數(shù)據(jù)的可視性的規(guī)模上從未發(fā)生。此外，它將顯示用于制造的設(shè)備的效率和性能，在實(shí)施預(yù)測(cè)維護(hù)制度是一個(gè)完美的匹配。雖然用于這樣的應(yīng)用的傳感器可能是簡(jiǎn)單的，小的，被動(dòng)的和/或半導(dǎo)體元件，工業(yè)環(huán)境中，他們需要的功能是極端的溫度，振動(dòng)和水分。需要快速部署傳感器和邊緣節(jié)點(diǎn)的設(shè)備，可以在這些條件下操作，許多物聯(lián)網(wǎng)開發(fā)人員采用模塊為基礎(chǔ)的方法集成到他們的設(shè)計(jì)傳感器。

　　There are several reasons for using a module considering the challenges associated with using a discrete approach. For example， measuring temperature can be achieved by a negative temperature coefficient （NTC） thermistor connected in series with a resistor to produce a junction voltage that varies with ambient temperature. The resulting junction voltage could then be read by an analog to digital converter （ADC） of the host microcontroller， and a formula used to calculate the temperature. However， the temperature/resistance characteristic of NTC thermistors is not linear， requiring a best fit linearization across the operating temperature range. There is also the matter of temperature compensation and drift characteristics that need to be applied. This additional processing performed by the host microcontroller demands more MCU resources， and requires each end sensor device be calibrated during manufacture. Another major consideration is the packaging used to encapsulate the NTC resistor to ensure that the necessary components are protected from environmental factors.