地震勘探用混叠激发控制系统设计与实现  

Design and Implementation of Multi-source Shooting Control System for Blended Acquisition

作　　者：甘志强 孙祥娥[1] 夏颖 GAN Zhiqiang;SUN Xiang’e;XIA Ying(Electronics and Information College,Yangtze University,Jingzhou,Hubei 434023,China;Xi’an Geophysical Equipment Company,BGP of CNPC,Xi’an,Shaanxi 710077,China)

机构地区：[1]长江大学电子信息学院,湖北荆州434023 [2]中国石油集团东方地球物理公司西安物探装备分公司,陕西西安710077

出　　处：《西安石油大学学报（自然科学版）》2023年第3期88-93,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金面上项目(51978078)。

摘　　要：高效混叠采集是一种高精度地震勘探新作业模式,可大幅缩短野外地震勘探作业的周期,降低采集成本,而激发源控制是该新作业方法的核心内容之一,其控制时间的精度和随机性都将直接影响采集资料的品质。提出一种混叠激发控制系统的设计方法,采用基于MAX-7Q、STM32L475、SDINBDG4-16G-XI1等器件的低功耗设计技术,结合周期性启动MAX-7Q模块进行时钟同步算法,使用地震检波器拾取的数据作为种子,生成数值大小、偏差程度可控的随机数作为抖动激发时间。测试结果表明,设计系统的激发控制时间数据的抖动值具有数值大小、范围可控,随机性强的特征,满足混叠激发作业技术需求。The highly efficient blending acquisition of seismic data is a new operation mode of high-precision seismic exploration,which can greatly reduce the period of field seismic exploration and the acquisition cost.The source control is one of the core contents of the new operation method,and the accuracy and randomness of the control time will directly affect the quality of the acquired data.A design method of the multi-source shooting control system is proposed.The low-power design technology based on MAX-7Q,STM32L475,SDINBDG4-16G-XI1 and other devices and the clock synchronization algorithm based on periodically starting MAX-7Q module are adopted in the design,and the data picked up by the geophone is used as the seed to generate the random numbers with controllable value and deviation as dithered shooting time.The test results show that the values and range of the shooting control time data of the designed system is controllable and random,meeting the technical requirements of the blended shooting operation.

关 键 词：地震勘探 混叠采集 压控晶振 周期性时钟同步 低功耗 随机性 

分 类 号：P631.4[天文地球—地质矿产勘探]