本文介紹了一種分布式油罐液位激光測控系統防爆式高精度光柵型激光液位傳感器的構成原理。系統通過87c51 單片微機系統的多機通訊技術的綜合應用控制油罐電機的頻率, 進而精確控制分布式油罐的液位在精度(0. 05 %) 之內。
關鍵詞: 液位; 激光; CCD; 測控
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