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Starter for Seismic Data Acquisition with Settable Threshold

A seismic data and starter technology, applied in the direction of seismic signal receivers, etc., can solve the problem of the loss of the first wave of the seismic data acquisition start signal, and achieve the effects of improving anti-interference ability, expanding the scope of use, and suppressing false triggering.

Active Publication Date: 2016-06-22
福建平潭旭坤实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of the loss of the first wave of the seismic data acquisition starting signal in the above-mentioned prior art, and to provide a seismic data acquisition that effectively suppresses the interference signal, and can accurately trigger the seismic instrument for data acquisition regardless of whether the first wave is positive or negative. Launcher

Method used

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  • Starter for Seismic Data Acquisition with Settable Threshold
  • Starter for Seismic Data Acquisition with Settable Threshold
  • Starter for Seismic Data Acquisition with Settable Threshold

Examples

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Embodiment

[0019] Embodiment: A seismic data acquisition starter whose threshold value can be set is powered by a regulated power supply. The regulated power supply used in this embodiment adopts a positive voltage output terminal to output a voltage of 3.3 volts, and a negative voltage output terminal to output a negative 3.3 volts. Stabilized power supply, this embodiment is suitable for various seismic instruments (see attached figure 1 ), this embodiment includes an input interface 1 electrically connected to an external trigger circuit, an output interface 5 electrically connected to a seismic instrument, a threshold absolute value setting circuit 2, an absolute value comparison circuit 3 and an absolute value signal amplification circuit 4, and the threshold absolute value The output end of the setting circuit 2 includes a positive output end and a negative output end, the input end of the absolute value comparison circuit 3 includes a positive threshold input end, a negative thresh...

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Abstract

The invention relates to a seismic data collection starter capable of setting a threshold value. The invention aims at solving the problem in the prior art that the seismic data collection starting signal head wave is lost. A technical scheme is as follows: the seismic data collection starter capable of setting a threshold value comprises a threshold absolute value setting circuit, an absolute value comparison circuit and an absolute value signal amplification circuit, wherein the input end of the absolute value comparison circuit is electrically connected with an interface circuit, the output end of the threshold absolute value setting circuit is electrically connected with the input end of the absolute value comparison circuit, the output end of the absolute value comparison circuit is electrically connected with the input end of the absolute signal amplification circuit, and the output end of the absolute value signal amplification circuit is electrically connected with an output interface. By utilizing an absolute value comparison way, regardless of the fact that the trigger signal head wave is positive or negative, a seismic instrument can be triggered to collect the data, and high-quality seismic data can be obtained.

Description

technical field [0001] The invention relates to a data acquisition starting device in the technical field of geophysical exploration, in particular to a seismic data acquisition starter with a settable threshold. Background technique [0002] With the rapid development of modern information technology, in the past two decades, seismic instruments, signal processing methods and technical means have made great progress, but the start-up trigger used in seismic data acquisition has not made great progress, using external signals as When starting the signal, it is still used directly after shaping. Because the size of the external interference signals varies greatly in different places, false triggers are often generated during seismic data acquisition, especially when seismic waves are used as trigger signals. Since most seismic instruments have signal amplification, the amplified interference signals cause false triggers. The number of triggers is more frequent. If the peak o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/18
Inventor 陈杰炜林熙鹏游伟琳高扬峰
Owner 福建平潭旭坤实业有限公司
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