傳感器的無(wú)線選項(xiàng)

　　對(duì)數(shù)據(jù)的渴望似乎是無(wú)窮無(wú)盡的。從你汽車(chē)燃油系統(tǒng)的氧氣水平到后院的降雨量，嵌入式系統(tǒng)和傳感器一直監(jiān)控著我們周?chē)囊磺小?/p>

　　直到最近，所有監(jiān)控都是通過(guò)有線連接進(jìn)行的。探頭和傳感器直接連接到電子或機(jī)電控制系統(tǒng)，監(jiān)控或記錄數(shù)據(jù)，或用它來(lái)控制一個(gè)過(guò)程。

　　只有最關(guān)鍵或最苛刻的任務(wù)是通過(guò)無(wú)線電進(jìn)行嘗試的，因?yàn)榭罩羞B接的費(fèi)用和復(fù)雜性意味著這種遙測(cè)只能為軍事、工業(yè)或空間應(yīng)用辯護(hù)。然而，無(wú)線技術(shù)已經(jīng)蓬勃發(fā)展到現(xiàn)在我們與許多無(wú)線傳感器交互的可能性。

　　Simple send only

　　While specific requirements will dictate a given application， there are basically three architectural choices when implementing a sensor-based design. These are interrupt， polled， and time-sliced. An interrupt based system will just transmit whenever a trigger event occurs， a polled system will only report when asked， and a time-sliced system will report in on a predetermined interval. A simple send only sensor architecture limits these choices to interrupt or time-sliced.