| 海洋电场采集电极极差自动补偿方法设计 |
| |
| 引用本文： | 刘贵豪,刘兰军,黎明,陈家林,牛炯.海洋电场采集电极极差自动补偿方法设计[J].海洋技术,2016(1):57-61. |
| |
| 作者姓名： | 刘贵豪 刘兰军 黎明 陈家林 牛炯 |
| |
| 作者单位： | 中国海洋大学 工程学院,山东青岛,266100 |
| |
| 基金项目： | 国家高技术研究发展计划(“863”计划)资助项目(2012AA09A201)，山东省科技发展计划资助项目(2011GHY11535)，青岛市战略性新兴产业培育计划资助项目(13-4-1-2-gx) |
| |
| 摘 要： | 针对海洋电磁勘探的低频、微弱电场信号采集中电极与放大采集电路的耦合问题,提出了一种支持直流耦合的电极极差自动补偿放大采集电路设计方法,给出了系统设计实现,详细介绍了电极极差自动补偿放大采集电路和自动补偿控制算法.测试结果表明,所设计的电极极差自动补偿方法可将0.1～0.7 mV的电极极差自动补偿至0.043～0.074 mV,均控制在0.1 mV以内,满足了海洋电场采集直流耦合的需求,降低了电场采集电路对不极化Ag/AgC1电极的极差设计要求,可有效应用于海洋低频电场信号采集.
|
| 关 键 词： | 海洋电磁勘探 电极极差 自动补偿 直流耦合 弱信号 |
Design of an Electrode Range Automatic Compensation Method for Marine Electric Field Data Acquisition |
| |
| LIU Gui-hao,LIU Lan-jun,LI Ming,CHEN Jia-lin,NIU Jiong.Design of an Electrode Range Automatic Compensation Method for Marine Electric Field Data Acquisition[J].Ocean Technology,2016(1):57-61. |
| |
| Authors: | LIU Gui-hao LIU Lan-jun LI Ming CHEN Jia-lin NIU Jiong |
| |
| Institution: | Ocean University of China |
| |
| Abstract: | To resolve the coupling problem between electrode and amplification acquisition circuit for low frequency and weak electric signal acquisition in marine electromagnetic exploration, this paper presents an electrode range automatic compensation design method supporting DC coupling. It gives system implementation, and introduces in detail the compensation amplification circuit and automatic compensation control algorithm. Test results show that the designed electrode range automatic compensation method can automatically compensate the electrode range form 0.1-0.7 mV to 0.043-0.074 mV, well under the limit of 0.1 mV. The automatic compensation design meets the DC coupling need in marine electric field acquisition, reduces the electrode range design requirements for non-polarizable Ag/AgCl electrode in electric field acquisition circuit, and can effectively support the acquisition and application of marine low frequency electric field signals. |
| |
| Keywords: | marine electromagnetic exploration electrode range automatic compensation DC coupling weak signal |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《海洋技术》浏览原始摘要信息 |
| 点击此处可从《海洋技术》下载免费的PDF全文 |
|
