地震测深资料数据采集与收录系统

Acguisition and Recording System for the Data of Deep Seismic Sounding

本文介绍了ＳＴＭ－ＰＣ微机系列上实现的地震测深资料现场收录系统，其中包括对模拟磁带地震记录进行Ａ／Ｄ转换、数据采集等。在研究中，对时标信号的采集方式、六响报时信号处理、模拟回放电路的改进与采集速率等方面进行了试验，为高质量地进行Ａ／Ｄ转换取得了经验。本文是以海城震区的实际资料为基础，对Ａ／Ｄ转换的精度与效果进行了统计与分析，结果表明，该收录系统对模拟地震记录的Ａ／Ｄ转换精度达到了规范要求。该收录系统与一般微机系列兼容，适用于我国目前使用的几种模拟磁带地震记录仪。

The paper introduced the field recording system for the data of deep seismic sounding completed on STM-PC microcomputer series, including the A/D conversion and data acguisition for the seismic recordings of analog tapes. Through the study of time-scale singnal acquisition, six-sound singnal proceeding, analog plagback circuite improvement and acquisition rates, etc. the experience of conducting A/D conversions with high quality is obtained. Upon statistical data the precision is analysed on the basis of practical data of the Haicheng earthquake region, the research results show that the A/D conversion precision for analog seismic record of this system conforms to the standard, and this system compatible with usual microcomputers will suit the tape recorders to be used in our country.