摘要
在简要论述金属条码基本原理的基础上,提出了采用金属条码标签植入钻柱接头管理钻柱的方法。利用电磁原理制造的金属条码阅读器对金属条码标签进行非接触性扫描,产生的交变磁场将在金属条码标签上产生电涡流。同时该电涡流将反作用于金属条码阅读器上的线圈,使其电流大小和相位发生相应的变化,即线圈的有效阻抗变化。通过整形放大接口电路将该阻抗变化转换为TTL信号,检测出其信号即可得到钻柱ID。再以此ID为基础建立相应的数据库,得到钻柱的库存信息及累计使用时间,从而有助于提前预防钻柱失效,有效地管理钻柱。
Based on introducing the working principles of the metal bar code, a method to manage drill string by planting metal bar code into the connection was developed. Eddy current of tag is induced by an alternating magnetic field produced by non contact scanning using an electromagnetic metal bar code reader. And meanwhile the coils of the metal bar code reader has been reacted by the eddy current, which will change the current magnitude and phase, i. e. , the effective impedance of coils. The effective impedance transformation is converted into TTL signals through shaping and amplifying interface circuit. Then the drill string identification （ID） can be identified by TTL signals detection. The corresponding database is es tablished that contains information about the drill string reserves and its accumulative usage time. With the database drill string failure can be prevented in advance and drill strings can be managed effectively.
出处
《石油钻探技术》
CAS
北大核心
2007年第5期7-9,共3页
Petroleum Drilling Techniques
关键词
金属条码
钻柱
管理
标签
阅读器
metal bar code
drill stem
management
label
microreader
作者简介
冯定（1963），男，1984年毕业于江汉石油学院矿场机械专业，教授．博士生导师．主要从事神经网络专家系统、石油机械及井下工具的教学与研究。联系电话：（0716）8062079
