海底大地电磁数据采集器高精度应急时钟源的设计  

THE DESIGNING OF THE HIGH ACCURACY EMERGENCY REAL-TIME CLOCK FOR SEEBED MAGNETOTELLURIC DATA ACQUISITION

作　　者：杜刚[1] 魏文博[1] 邓明[1] 姜景捷[1] 

机构地区：[1]中国地质大学,北京100083

出　　处：《物探与化探》2004年第4期303-306,共4页Geophysical and Geochemical Exploration

基　　金：国家863计划课题(2002AA615020);校内科学基金资助

摘　　要：为了实现海底大地电磁探测的远参考道测量,各台仪器需同步采集数据,为此,设计了1个具有微秒级误差的高精度应急时钟源。该时钟源的设计采用单片机(MCU)为主控单元,应用了串行通讯、I2C等技术手段。文中概要介绍了其硬件组成和软件程序的设计。In order to achieve the remote reference measurement in the seabed magnetotelluric data acquisition, every instrument needs to collect the data synchronously. Therefore, the precision and stability of the clock become the key link in keeping normal operation of the equipment. The authors designed a highly precise clock module with the error margin only at the microsecond level, which uses the microcontroller as its main control unit and employs such techniques as serial communication and I2C. This paper mainly describes the hardware and software design of the clock.

关 键 词：大地电磁 海洋探测 同步采集 高精度时钟源 

分 类 号：P631.3[天文地球—地质矿产勘探]