傳感器模塊的實現

　　物聯網的承諾，使許多新的應用程序和服務，為消費者和企業。而作為消費者，我們看到物聯網進入我們的生活慢慢的開始，許多專家認為，行業將受益最多的是那些在制造業中，這個詞語的工業物聯網（IIoT）已成為流行。基于物聯網應用的任何一樣，它會涉及到遠程傳感器和執行器的軍隊將IIoT的生活。IIoT將產量的制造和工藝操作數據的可視性的規模上從未發生。此外，它將顯示用于制造的設備的效率和性能，在實施預測維護制度是一個完美的匹配。雖然用于這樣的應用的傳感器可能是簡單的，小的，被動的和/或半導體元件，工業環境中，他們需要的功能是極端的溫度，振動和水分。需要快速部署傳感器和邊緣節點的設備，可以在這些條件下操作，許多物聯網開發人員采用模塊為基礎的方法集成到他們的設計傳感器。

　　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.