| 井下三轴振动信号同步采集与大容量存储系统设计 |
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| 引用本文： | 曾强,艾维平,贾衡天,朱平阳. 井下三轴振动信号同步采集与大容量存储系统设计[J]. 测控技术, 2012, 31(3): 24-27 |
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| 作者姓名： | 曾强 艾维平 贾衡天 朱平阳 |
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| 作者单位： | 中国石油集团钻井工程技术研究院 井下控制工程研究所;中国石油集团钻井工程技术研究院 井下控制工程研究所;中国石油集团钻井工程技术研究院 井下控制工程研究所;中国石油集团钻井工程技术研究院 井下控制工程研究所 |
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| 基金项目： | 国家973计划资助项目（2010CB226702） |
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| 摘 要： | 随钻三轴振动信号同步采集和大容量数据实时存储一直是钻井工程中的难点。设计一种基于AD7980级联的三轴振动信号同步采集电路,以M25P64作为基本存储器,采用SPI总线硬件扩容与软件压缩相结合的方法实现了井下大容量数据存储。试验结果表明,该设计能够满足在井下200 h不间断情况下三轴振动信号同步采集和数据存储实际需要。
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| 关 键 词： | 井下振动信号 同步采集 大容量存储 数据压缩 |
3-Axis Vibration Signal Synchronous Acquisition and Bulk Data Real-Time Storage While Drilling |
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| ZENG Qiang,AI Wei-ping,JIA Heng-tian,ZHU Ping-yang. 3-Axis Vibration Signal Synchronous Acquisition and Bulk Data Real-Time Storage While Drilling[J]. Measurement & Control Technology, 2012, 31(3): 24-27 |
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| Authors: | ZENG Qiang AI Wei-ping JIA Heng-tian ZHU Ping-yang |
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| Affiliation: | (Downhole Control Engineering Department,CNPC Drilling Research Intitute,Beijing 100083,China) |
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| Abstract: | Synchronous acquisition 3-axis vibration signal and large-capacity data real-time storage while drilling have always been a challenge in drilling engineering.A synchronous acquisition circuit based on the AD7980 cascade,and a large-capacity data storage system,which comprises of hardware expansion of flash memories serially connected via SPI bus and software data compression,the basic memory unit is M25P64,are proposed.The design has been implemented in the downhole vibration measuring instruments,and it can satisfy the needs of continuous data storage within 200 h. |
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| Keywords: | downhole vibration signal synchronous acquisition large-capacity storage data compression |
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