定量分析SN338数字地震仪器的特性

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英文篇名：NUMERICAL ANALYSIS FOR THE CHARACTERISTICS OF SN338 DIGITAL SEISMIC INSTRUMENT 中文刊名：地球物理学报 英文刊名：Chinese Journal of Geophysics 作者：黄先律 ; 余嘉顺 英文作者：HUANG XIAN-LU ; YU JIA-SHUN (Chengdu lnstitute of Technology ; Chengdu 610059) 中文关键词：数字地震仪器 ; IFP电路最佳设计参数 ; 提高传输信号保真度和量化精度． 英文关键词：Digital siesmic instrument ; Method of optimum designing parameters of IFP circuit ; Improvement of the fidelity and measuring accurucy for input and output signals. 出版日期：1994-12-30 机构：成都理工学院 年：1994 期：S2 出版单位：地球物理学报

摘要

采用数值模拟定量分析方法，成功地分析和完善了ＳＮ３３８仪器ＩＦＰ电路的特性，指出原设计参数不严密：预测时间Ｃ较大，上限参考电平Ｖｕｐ和下限参考电平ＶＬｏｗ偏大，致使过零斜顶子样出现较多上溢失真点（Ｖ０（ｔ）＞８．１９１５Ｖ）和下溢非规格化点（Ｖ０（ｔ）＜２Ｖ）．进而在微机上绘制了ＳＮ３３８仪器ＩＦＰ电路过零斜顶子作最佳设计参数量板图，确定最佳设计参数值范围，这将明显地提高ＳＮ３３８仪器的保真度和量化精设．
By using of numerical modeling analytical method, the characteristics of IFP circuit in SN338 digital seismic instrument has been studied and improved successfully.Research demonstrate the inaccuracy of original designing parameters related to leaning greater of predictable time C,upper reference level VUP and lower reference level VLOW. The results of Such inaccuracy cause the appearances of under-flowing and over-flowing points for zero-passage dipping-top samples.The measuring monogram for the selection of optimum parameters for zero-passage dipping-top samples of IFP circuit in SN338 instrument has been designed in micro-COmputer.The determination of optimum disigning parameters improve the fidelity and measuring accurucy of SN338 seismic instrument obviousl.

引文

［1］吕效，两种IFP增益比较器的对比，石油地球物理勘探，增刊2，1980．［2］黄先律，地震勘探仪器，北京：地质出版社，1988．［3］TexasInstrumentsInc，DFS－VoperatingandMaintenanceManuel，1979．