seismic recorder meaning in Chinese
地震记录仪
Examples
- The thesis aims to give a scheme of designing a 48 - channel collected seismic recorder based on pci bus , and a testing machine has been completed in the basis of the scheme . pci bus provides a high data transfer speed , which solve the problem of transfering a mass of data in a short period of time ; moreover , two assistant channels are provided to sample reference signal ; the function of data correlation in real - time is also provied in the software of the instrumental system
论文论述了pci总线功能接口的实现和数据采集模块的设计,给出了利用pci9054接口芯片设计pci接口的详细过程,并利用driverstudio为pci数据采集系统编写了设备驱动程序;在数据采集模块的设计中,主要完成的工作有多通道数据采集、浮点放大以及系统的低噪声设计,并利用cpld设计了整个系统的时序逻辑。 - The principle of vibrator is to introduce scattered energy to underground in a comparatively long time , and collect the energy through correlation and compress it into a narrow pulse . the portable high - frequency vibrator system , developed by key lab of geo - exploration and instrumentation ( jilin univ ) , ministry of education , generates chirp signal and accumulates energy through a long - time bestiring . according to the characteristics of vibrator , the seismic recorder that operates on - line with vibrator must have these functions as follow : first , it must have the ability of recording a great quantity of data . second , it must have assistant channels to sample reference signal . third , it must have the function of data correlation in real - time
可控震源利用可控的小能量、长时间激发波来实现冲击震源瞬时产生的大能量激发波。在利用可控震源进行地震勘探时,要求地震仪长时间记录地震信号,这对地震仪的采样长度提出了很高的要求。受存储量和数据传输速度的限制,绝大多数地震仪很难对如此大的数据量进行记录,同时,可控震源要求地震仪有两个辅助通道并且具有数据相关功能,目前国内还没有出现满足要求的地震仪产品。 - The present products of seismic recorders are generally divided into two types , distributed seismic recorders and collected ones . restricted by memory and data transfer speed , the distributed seismic recorder can hardly meet the demand of recording a great quantity of data . furthermore , most of domestic collected seismic recorder do not have particular assistant channels needed by vibrator and do not have the function of data correlation in real - time
本文提出了一种基于pci总线的集中式地震仪的设计方案,实现了大数据量的采集和现场相关功能,并初步完成了样机的设计。 pci总线具有高达132mbyte / s的传输速率,解决了大数据量的瞬间传输问题,基于pci总线的集中式地震仪在进行地震数据采集时可以边采集边传输,无需传输等待时间。 - This paper gives a time - synchronization technique bases on gps time service signal which is used in broad band seismic recorder 。 by world coordination time offered by gps - - utc ( usno ) , adjust local clock base on gps signal , gain high nicety clock signal , clock precision reachs 10 - 6 。 this clock is the time source of broad band seismic recorder , bring the whole seismic recorder works in same time base . 1pps time base with high stability can be used as in - phase , spring , time and start - stop of every collection mode , while the scale under second make a precise time mark to receive data of broad band seismic recorder
针对接收机中gps信号的噪声进行kalman滤波软件处理, kalman滤波可以对gps信号与本地晶振时钟的时差数据在大噪声中进行平滑,在较短时间内估计出高精度的时差数据。系统消除了gps秒脉冲信号的ms级随机误差,把晶振秒脉冲的长期稳定度锁定到gps信号的稳定度上;在gps信号失效时给出了可行措施,能够保证在任何情况下产生一个稳定、高精度秒脉冲信号,误差在1 s内。