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High-precision three-component micro seismic geophone integrating active seismic source and realization method

An active source and geophone technology, which is applied in seismic signal receivers, seismology, instruments, etc., can solve the problem of low positioning accuracy of microseismic monitoring, and improve the positioning accuracy of microseismic data, with strong practicability and ingenious structure. Effect

Active Publication Date: 2016-12-07
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-precision three-component micro-seismic detector integrated with an active seismic source and its implementation method, which mainly solves the problem of low positioning accuracy of current micro-seismic monitoring

Method used

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  • High-precision three-component micro seismic geophone integrating active seismic source and realization method

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Embodiment

[0026] The invention provides a high-precision three-component micro-seismic geophone integrated with an active seismic source, which is mainly used to provide hardware support for the micro-seismic monitoring technology of the active seismic source, and provides a solution to improve the positioning accuracy of the micro-seismic monitoring technology at the geophone level possibility. The system part of the present invention includes a main control system, a data acquisition circuit, a DAC, an acceleration sensor, a DDS chip, an actuator, an excitation body and an inertial sensor, a 485 communication interface and an Ethernet communication interface, wherein the main control system adopts parallel STM32F4 microcontroller and FPGA (in this embodiment, the FPGA uses Cyclone IV series).

[0027] Such as figure 1 As shown, the STM32F4 microcontroller, the DDS chip, the actuator and the exciter are connected in sequence to form an active source system, whose function is to provid...

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Abstract

The invention discloses a high-precision three-component micro seismic geophone integrating an active seismic source. The high-precision three-component micro seismic geophone comprises a main control system, data acquisition circuits, a DAC, acceleration sensors, a DDS chip, an actuator, a vibration excitation body and an inertial sensor; the main control system, the DDS chip, the actuator and the vibration excitation body constitute an active seismic source system; the vibration excitation body, the acceleration sensors and the data acquisition circuits are connected with one another sequentially; the DAC is connected with the data acquisition circuits; the data acquisition circuits are connected with the main control system; the DAC and the active seismic source system constitute a closed loop which provides a seismic source and acquires micro seismic data; the inertial sensor is connected with the main control system and is used for acquiring the real-time azimuth information of a geophone; and the exterior of the main control system is connected with a 485 communication interface and an Ethernet communication interface. The high-precision three-component micro seismic geophone of the invention is reasonable in structure design. According to the high-precision three-component micro seismic geophone of the invention, current micro seismic monitoring can be verified through the verification of known events, and therefore, the problem that existing micro seismic monitoring technologies are difficult to further improve the positioning accuracy of a seismic source can be solved.

Description

technical field [0001] The invention relates to the technical field of micro-seismic monitoring, in particular to a high-precision three-component micro-seismic geophone integrated with an active seismic source and a realization method. Background technique [0002] Micro-geophones are special geophones used to monitor vibrations in rocks, and their principle and structure are similar to geophones in seismic exploration and engineering measurement. The three-component geophone is a special geophone used in multi-wave exploration. Different from the single-component conventional geophone, the three-component geophone can record the three components of the particle vibration velocity vector, so that it can be used to simultaneously record longitudinal waves, transverse waves, Convert wave. [0003] Three-component geophones can be used to assist source analysis in microseismic monitoring technology. At present, the relevant microseismic monitoring algorithm has been relative...

Claims

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Application Information

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IPC IPC(8): G01V1/18G01V13/00
CPCG01V1/184G01V13/00
Inventor 沈统庹先国李怀良刘勇陆景荣文钲吕中云
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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