摘要
为在隧道、高楼群、地下以及密林等GPS同步失效的场合,高效、高精度地进行常时微动勘探,设计了一种基于本地无线同步的微动勘探仪。该系统采用磁电式速度传感器、WiFi模块以及ADS1251等,实现了高精度、高效的微动勘探;采用SYN1000本地无线同步模块产生的高精度同步脉冲,实现了精度在1μs以内高精度时间同步。对勘探仪性能进行测试,等效噪声,动态范围、同步误差均满足勘探仪需求;勘探数据进行H/V法与HRFK法处理,验证了勘探仪的有效性。
To carry out micro-tremor exploration with high efficiency and high precision where GPS synchronization fails in tunnels,underground and dense forests,etc.,a micro-tremor prospector survey instrument based on local wireless synchronization is designed.The system adopts a magnetoelectric speed sensor,WiFi module and ADS1251 to realize high-precision and efficient prospector exploration.A high-precision synchronization pulse generated by SYN1000 local wireless synchronization module has been adopted to achieve high-precision time synchronization within 1μs.The performance of the exploration instrument was experimentaly tested.All the parameters in terms of the equivalent noise,dynamic range and synchronization error met the requirements of the exploration instrument.The exploration data was processed by the H/V method and the HRFK method to verify the effectiveness of the exploration instrument.
作者
牟新刚
朱开瑄
周晓
喻颜
MOU Xingang;ZHU Kaixuan;ZHOU Xiao;YU Yan(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China)
基金
国家自然科学基金资助项目(61701357)
关键词
无线同步
微动勘探
磁电式速度传感器
低频补偿网络
多通道
ADS1251
wireless synchronization
micro-tremor
magnetoelectric speed sensor
low frequency compensation network
multi-channel
ADS1251
