基于有限元仿真結(jié)果對電阻層析成像(ERT) 傳感器的“軟場”特性作了深入研究。研究結(jié)果表明, ERT 傳感器的“軟 場”特性主要體現(xiàn)在其靈敏場的分布受被測介質(zhì)的分布及兩相介質(zhì)電導率差值的影響。其它條件相同電極數(shù)目不同的ERT 的靈敏場分布有所不同, 但軟場特性基本相同。
關(guān)鍵詞　電阻　層析成像　傳感器
Abstract　Based on finite element simulat ion result s, the soft field characterist ics of ERT senso r were studied. It is found that soft field characterist ics are mo st ly reflected in the influence of dist ribut ion of medium s and the dif2 ference in conduct ivity of two2phase medium s on the dist ribut ions of sensit ive field. The dist ribut ions of ERT sensit ive fields are different if the numbers of elect rodes are no t the same w ith o ther condit ions ident ical, but the characterist ics of soft fields are mo st ly alike.
Key words　Resistance　Tomography　Senso r