パソコン2台を用いた多成分トリガー地震収録システムの開発

Abstract

A new data acquisition system was developed for the routine observations of microearthquakes.The system consists of two personal computers, a 32-channel 12-bit A-D converter, a dualport RAM and a 600 MB magneto-optical disk unit. The system can be also equipped with a GPIB interface to the third computer, which enable automatic data processing or data transfer through computer net-works.The programs on the system attain real-time delay-trigger data acquisition, real-time monitoring of data on a display to watch the conditions of stations and manual processing of the stored data.The systems were intalled for test at the Hokuriku and the Kamitakara Observatories in 1992 and have been successfully operated for earthquake observations.The old analogue-recorder system at the Kamitakara, the Hokuriku and the Tottori Observatories will be replaced with this system in the near future.