本文介紹了一種分布式油罐液位激光測(cè)控系統(tǒng)防爆式高精度光柵型激光液位傳感器的構(gòu)成原理。系統(tǒng)通過87c51 單片微機(jī)系統(tǒng)的多機(jī)通訊技術(shù)的綜合應(yīng)用控制油罐電機(jī)的頻率, 進(jìn)而精確控制分布式油罐的液位在精度(0. 05 %) 之內(nèi)。
關(guān)鍵詞: 液位; 激光; CCD; 測(cè)控
Abstract: The design scheme about the advanced dist ributed laser measuring and cont ro l system to the level of the o il tank is int roduced. The level measuring theo ry based on the grat ing laser senso r w ith h igh accuracy and detonat ion2p revented is also p resented. The courses of data co llect ing and signal p ro2 cessing are given. A t the same t ime the sources of erro r are analyzed. The experimental results show that the signal is accuracy and no lo ss of codew hen it t ransm its 800meters th rough the op t ical fiber, the system erro r is below 0. 05 percent w hen the measuring level range is w ith in 20 meters.
Key words:L iquid level; O il tank; M easuring and cont ro l