工矿自动化2017，Vol.43Issue(3)：1-6,6.DOI:10.13272/j.issn.1671-251x.2017.03.001
分布式槽波地震数据同步采集系统设计
Design of distributed synchronous acquisition system of seam seismic data
摘要
Abstract
In order to synchronize various collection terminals with each other and synchronize twochannel in the same collection terminal in acquisition system of seam seismic data,a distributed two-channel synchronous acquisition system of seam seismic data was designed.The system applies a weak signal conditioning circuit to improve signal-to-noise ratio of seismic signal,and uses eight-channel synchronization sampling core to realize synchronization sampling of two-channel in the same collection terminal.A clock synchronization system is constructed which is composed of GPS receiver,digital phase lock loop and STM32 main controller.The adaptive oscillator model drift correction algorithm is used to predict and estimate temperature-drift characteristic and aging characteristic of oven controlled crystal oscillator,so as to realize clock synchronization and time synchronization of various collection terminals in coal mines.The test results show that the system realizes distributed synchronous acquisition of multichannel seismic signal,the accuracy of synchronization between the different data collection terminals is better than 10 μs within 8 hours continuous work in underground coal mine.关键词
煤炭开采/槽波地震监测/数据采集/同步采样/AOM驯服算法/恒温晶振Key words
coal mining/seam seismic monitoring/data acquisition/synchronous sampling/AOM drift correction algorithm/OCXO分类
矿业与冶金引用本文复制引用
黄三,张法全,叶金才,王国富,王小红..分布式槽波地震数据同步采集系统设计[J].工矿自动化,2017,43(3):1-6,6.基金项目
国家自然科学基金项目(61362020,61540040) （61362020,61540040）
桂林电子科技大学研究生教育创新计划资助项目(2016YJCX78). （2016YJCX78）
