新型短周期地震仪标定器的设计  

Design a new calibrator of short-period seismograph

作　　者：膝云田 冯玉华[1] 赵华[1] 张炼[1] 张志中[1] 肖春艳[1] 

机构地区：[1]国家地震局地球物理研究所

出　　处：《地震地磁观测与研究》1997年第1期65-70,共6页Seismological and Geomagnetic Observation and Research

摘　　要：针对地震仪器分段标定方法以及按分段标定方法设计的标定仪器的不足，设计整机系统一次标定的短周期地震仪标定器。新型的地震仪标定器，采用８０３１单片机为ＣＰＵ，程序控制数模转换产生各种标定信号，程控衰减电路实现信号的定量输出，恒流变换电路实现标定信号的的恒流输出和地震仪的恒流标定。采用系统标定方法和相应的标定器将提高地震仪器的标定精度。It is well known that a few shortcomings exist in seismograph calibration using separated method, In this paper , a new calibrator based on system calibration method has been devel- oped. Microprocessor technique , D/A conversion technique and programmable gain technique are adopted in this design. Especially , constantcurrent outputt signal excites the calibrating coil of seismograph directiy to calibrate seismological observation system in which seismograph and amplifier-recorder is considered as a unit . Calibration accuracy is improved using the developed calibrator and system calibrating method .

关 键 词：地震观测 短周期地震仪 单片机 标定器 

分 类 号：P315.62[天文地球—地震学]