Microseismograph, microseism signal acquiring and de-noising method, and microseism signal acquiring method

Abstract

A microseismograph comprises a data acquiring module, a control module, a storage module, a power module and a wave detector, the wave detector receiving microseism signals is connected with the data acquiring module, the data acquiring module pre-processing the microseism signals is connected with the control module, and the control module is connected with the storage module; the microseismograph further comprises a GPS module providing locating and timing information, wherein the GPS module is connected with the control module; the wave detector comprises at least one set of shocking sensor and at least one set of electric signal sensor capable of sensing electric signals and incapable of sensing shocking signals, the electric signal sensor is provided with a resistor with electrical performance same as that of the shocking sensor, and the data acquiring module comprises sampling channel interfaces with the number larger than the sum of the number of the shocking sensors and the number of the electric signal sensors. The microseismograph, the microseism signal acquiring and de-noising method, and the microseism signal acquiring method can effectively eliminate electrical noise interference and improve the signal-to-noise ratio and are suitable for working in an outdoor atrocious weather environment.

Description

technical field [0001] The invention relates to a recorder, in particular to a recorder suitable for field operations for monitoring earthquakes / fluctuations. Background technique [0002] As we all know, the microseismic recorder is an instrument used to record vibration / fluctuation. Its function is to record the signal transmitted by the geophone (that is, the sensor that senses vibration / fluctuation) and store the signal according to the predetermined recording format requirements. or transmitted to downstream equipment. The logger itself can be a generic device. However, due to the different requirements of the recording format and the content of the collected data (such as different frequency ranges), it is difficult for a general-purpose recorder to meet specific needs. The microseismic recorder of the present invention is a microseismic recorder for monitoring underground microcracks and recording microseismic physical parameters. [0003] For space targets (such a...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing microseismic recorders are composed of a computer system with an operating system plus acquisition boards and other components. The system is huge, the operating efficiency is relatively low, the power consumption is large, and the battery capacity is naturally required to be relatively large. In order to adapt to the field environment The moving and transportation of these instruments must have a solid structure, resulting in a relatively bulky overall, resulting in increased engineering costs, easy damage during instrument handling, and affecting normal work

Moreover, the existing recorder does not have a good denoising process, which itself is a source of noise and is not suitable for collecting weak underground rupture signals.

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