Earthquake data acquisition board for geophysical exploration

Abstract

The present invention discloses a seismic data acquisition board used in geophysical exploration. The invention consists of two sections: the first section is fixed with seismic data collecting interface, prime amplifier module, selectivity control module and simulation power; the second section is fixed with seismic data collecting nest plate, in-situ programmed logic array, timepiece resource, digital power and communication interface. Between the two sections connectors are set to communicate with each other. Prime amplifier module uses two-stage amplifier structure. Communication interface uses RS485 cable interface. In-situ programmed logic array can accomplish reception and processing of ascending data format conversion and descending control signal.

Description

technical field [0001] The invention relates to the field of geophysical prospecting, in particular to a seismic data acquisition board for geophysical prospecting. Background technique [0002] Seismic data acquisition and recording systems are the most critical equipment in petroleum seismic exploration. Seismic exploration operations require undistorted reception and recording of seismic waves. Seismic data acquisition and recording systems must have a large dynamic range, low noise, low drift, broadband and suppression of interference Therefore, whether the function of the front-end acquisition board is perfect or not, and the quality of the recorded data is directly related to the quality of the final collected data. [0003] The acquisition board of the existing seismic data acquisition and recording system adopts the traditional software calculation method, that is, the microcontroller processing method, so the calculation speed is not high, and because the traditiona...

AI Technical Summary

Problems solved by technology

[0003] The acquisition board of the existing seismic data acquisition and recording system adopts the traditional software calculation method, that is, the microcontroller processing method, so the calculation speed is not high, and because the traditional electronic components and design methods are used, the equipment is outdated. It is difficult to complete high-precision and high-resolution seismic exploration

Therefore, the performance of the traditional seismic data acquisition board cannot meet the seismic exploration requirements of higher performance indicators, and it is difficult to collect high-quality seismic data

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