【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。更多还原

【Abstract】 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.更多还原