| 电磁波层析成像数据采集系统 |
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| 引用本文： | 张景涛,周鹤鸣.电磁波层析成像数据采集系统[J].中国地震,1996,12(1):35-42. |
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| 作者姓名： | 张景涛 周鹤鸣 |
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| 作者单位： | 国家地震局地球物理研究所 |
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| 摘 要： | 阐述了电磁波透射层析成像数据采集系统的研制，对软硬件的设计作了较详细的说明，还介绍了相应的技术细节。该系统是一个软件、硬件结合的单片机控制数据采集系统：硬件全部采用低功耗、高速器件、其中Ａ／Ｄ转换器采１２位双各分型模数据转器。
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| 关 键 词： | 电磁法勘探 CT成像 数据采集系统 电磁波 |
The Data Collect System for Electromagnetic Geotomography |
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| Zhang Jingtao, Zhou Heming, Teng Yuntian.The Data Collect System for Electromagnetic Geotomography[J].Earthquake Research in China,1996,12(1):35-42. |
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| Authors: | Zhang Jingtao Zhou Heming Teng Yuntian |
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| Abstract: | This paper elaborates upon the development of the data collect system which is mainly used in electromagnetic ray geotomography, expounds the preparations for its software and hardware, and also discusses some relevant technique details adopted by it. This system is a software-hardware-combined data collect system controlled by a single-chip processor. its whole hardware adopts low power consumed and high speed devices, among them, the A/D converter is a 12 Bit dual-slope integrating Analog-to-Digital Convrter. Its software adopts block-design and menu-drived structure. We have solved the problem of real-time automatic diagnosis for normal failures in the observation system and the problem of the power failure protection for its data memory chips. Both the multi-frequency scanning survey mode and the single-point frequency survey mode are available, and also, it can collect data either automatically or manually. Via calibrating the receiving unit of the survey system, we can set up the receiving characteristic,modify the frequency deviation of the instrument by checking the characteristic tables with the acquired data in a survey to improve the Survey data to meet the reality. It has been proved by practice that this system works readily and reliably with high automatism, is easy to learn and easy to use, and meets the demands of the exist ray-geotomography survey systems very well. |
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| Keywords: | Electromagnetic prospecting Tomography Data Processing Data storage Data system |
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