An introduction of key modules of downhole very broadband seismograph
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Abstract: The key modules of downhole very broadband seismograph include multi-components core machinery and reed system, core feedback adjustment system, and downhole positioning and orientation system.
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Key words:
- reed /
- feedback adjustment /
- positioning and orientation
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图 6 甚宽频带地震仪反馈模型框图
Figure 6. Illustration graph of very broadband seismograph feedback module
图 7 传感器力平衡反馈系统的机械结构
Figure 7. Machinery of force equilibrium feedback system of sensor
图 8 井下地震仪反馈调理电路印制电路板（PCB）
Figure 8. The printed circuit board (PCB) of feedback modulation circuit of downhole seimograph
图 9 井下定位定向系统示意图
Figure 9. Illustration graph of downhole positioning and orientation system
图 10 电子罗盘定向原理框图
Figure 10. Block graph of the principle of electronic compass orientation
图 11 井下光纤陀螺寻北仪结构与总控模块图
Figure 11. Components structure graph and illustration graph of general control module of downhole Fiber Optical Gyroscope (FOG) north finder
图 12 井下光纤寻北仪通讯流程图
Figure 12. Flow chart of communication for downhole Fiber Optical Gyroscope (FOG) north finder
图 16 井锁到位指示灯驱动电路设计图
Figure 16. Design of drive circuit for position indicator of borehole locker
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[1] 崔庆谷. 反馈式地震计的性能设计与噪声测量研究[D]. 北京: 中国地震局地球物理研究所, 2003Cui Q G. The research for performance and self-noise measure of force-balanced seismometers[D]. Beijing: Institute of Geophysics, China Earthquake Administration, 2003 [2] 李少睿,毛国良,王党席,等. 井下地震计方位角检测技术应用研究[J]. 地球物理学报,2016,59(1):299-310 doi: 10.6038/cjg20160125Li S R,Mao G L,Wang D X,et al. Research on the application of borehole seismometer azimuth detection technology[J]. Chinese Journal of Geophysics,2016,59(1):299-310 doi: 10.6038/cjg20160125 -
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