YRY型钻孔应变仪数据采集的高精度实现
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摘要
根据地震前兆仪器——YRY钻孔应变仪的需求,构建了分辨率为6位半的数据采集系统。以24位Σ-Δ型ADCADS1201为核心部件,对主要电路的设计、高性能外围器件的选型、地的拓扑结构及软件关键性编程作了技术分析。测试结果及地震台站的观测资料证明该系统已达到预期效果。
According to the demand of seismic precursor instruments——YRY borehole strainmeter,the data acquisition system with the 6 1/2 digit resolution system is introduced.Taking 24-bits Σ-ΔADC ADC1210 as core component,the circuit design,the choice of high performance periphery devices,the topological construction of ground and program for high accuracy purpose are analyzed.The test results and seismic station observation have proved that the system can meet the requirements.
According to the demand of seismic precursor instruments——YRY borehole strainmeter,the data acquisition system with the 6 1/2 digit resolution system is introduced.Taking 24-bits Σ-ΔADC ADC1210 as core component,the circuit design,the choice of high performance periphery devices,the topological construction of ground and program for high accuracy purpose are analyzed.The test results and seismic station observation have proved that the system can meet the requirements.
引文
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4顾海洲,马双武.PCB电磁兼容技术-设计实践[M].北京:清华大学出版社,2004.4Gu Haizhou and Ma Shuangwu.EMC for PCB[M].Beijing:Tsinghua University Press,2004.(in Chinese)
5[日]冈村迪夫.王玲等译.OP放大电路设计[M].北京:科学出版社,2004.5Okamura Michio.Translated by Wang Ling,et al.OP ampli-fier circuit design[M].Beijing:Science Press,2004.(in Chinese)
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9凌志浩.智能仪表原理与设计技术[M].上海:华东理工大学出版社,2003.9Ling Zhihao.Principle and design technology of intelligent meter[M].Shanghai:East China University of Science&Technology Press,2003.(in Chinese)
10段九洲.电源电路实用设计手册[M].沈阳:辽宁科学技术出版社,2002.10Duan Jiuzhou.Power circuit practical design handbook[M].Shenyang:Liaoning Science and Technology Press,2002.(in Chinese)
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