电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2014年
14期
77-80
,共4页
石油套管%测厚仪%测量精度%定量分析
石油套管%測厚儀%測量精度%定量分析
석유투관%측후의%측량정도%정량분석
oil casing%thickness gauge%measurement accuracy%quantitative analysis
为了提高测厚仪测量石油套管的精度，根据发射电磁场原理，改变了线圈电磁场在石油套管内外的分布，使该测厚仪在不用推靠系统的条件下，提高了仪器的检测灵敏度；采用了远场低频双发射及阵列接收探头的结构，提高了仪器水平方向的分辨率。提出了能够快速准确地提取测得数据幅值的包络线法，实现了在输入样本中增加数据变化率的自适应BP神经网络算法。实验结果表明，该仪器具有测量精度高、速度快、水平方向的分辨率高的优点，而且结构简单便于生产推广。
為瞭提高測厚儀測量石油套管的精度，根據髮射電磁場原理，改變瞭線圈電磁場在石油套管內外的分佈，使該測厚儀在不用推靠繫統的條件下，提高瞭儀器的檢測靈敏度；採用瞭遠場低頻雙髮射及陣列接收探頭的結構，提高瞭儀器水平方嚮的分辨率。提齣瞭能夠快速準確地提取測得數據幅值的包絡線法，實現瞭在輸入樣本中增加數據變化率的自適應BP神經網絡算法。實驗結果錶明，該儀器具有測量精度高、速度快、水平方嚮的分辨率高的優點，而且結構簡單便于生產推廣。
위료제고측후의측량석유투관적정도，근거발사전자장원리，개변료선권전자장재석유투관내외적분포，사해측후의재불용추고계통적조건하，제고료의기적검측령민도；채용료원장저빈쌍발사급진렬접수탐두적결구，제고료의기수평방향적분변솔。제출료능구쾌속준학지제취측득수거폭치적포락선법，실현료재수입양본중증가수거변화솔적자괄응BP신경망락산법。실험결과표명，해의기구유측량정도고、속도쾌、수평방향적분변솔고적우점，이차결구간단편우생산추엄。
In order to improve the accuracy of the thickness gauge to measure oil casing, according to the principle of emission electromagnetic field, the coil electromagnetic field distribution both inside and outside the oil casing is changed, and then the detection sensitivity of the instrument is improved under the condition of no push-backing system; The structure of far field low frequency double emission and array receiving probe is adopted, and then the horizontal resolution of instrument is improved. A envelope method of extracting amplitude of measured data is presented. A self-adaptive BP neural network algorithm of increasing the data change rate in the input samples is realized. The practice results show that, the instrument has the advantages of high measuring accuracy, high measuring speed and high resolution of the horizontal direction. Furthermore, the simple structure of instrument is convenient for production and promotion.
