KR102047611B1 - 3d marine seismic lab experiment system for i/o signal control and gain - Google Patents

Abstract

Disclosed is a system for controlling and reinforcing a 3D marine environment acoustic wave indoor measurement test input/output signal. The system for controlling and reinforcing the 3D marine environment acoustic wave indoor measurement test input/output signal according to one embodiment can comprise: a waveform generating unit for generating a plurality of different waveform signals; an output unit configured to output the plurality of different waveform signals as output signals through a plurality of channels; and an input unit configured to receive the received input signal through the plurality of channels as reflected on a model for the 3D marine environment acoustic wave indoor measurement test.

Description

3D Marine Environment Seismic Indoor Measurement Test I / O Signal Control and Reinforcement System {3D MARINE SEISMIC LAB EXPERIMENT SYSTEM FOR I / O SIGNAL CONTROL AND GAIN}

The following description relates to the three-dimensional marine environment seismic indoor measurement test input and output signal control and reinforcement system.

Three-dimensional seismic exploration can be widely used for exploration of energy resources such as oil, gas, and gas hydrates, mineral resources such as manganese nodules, aggregate resources, and seabed exploration. The basic principle of 3D seismic sensing is the same as 2D seismic sensing, and is an exploration technique configured according to the additional arrangement of a receiver or a sound source in a sound source system. In the two-dimensional seismic survey, one set of sound source and one receiver are used. In the three-dimensional seismic survey, two or more sets of sound sources or receivers are used to obtain information about three-dimensional real terrain. Therefore, it is important to simulate the control and arrangement of the sound source and the receiver like the actual 3D seismic survey.

A typical seismic indoor test device has a difficulty in simulating three-dimensional seismic survey because it uses one sound source and one receiver. In addition, even when data is obtained by simulating three-dimensional seismic sensing, there are differences from actual three-dimensional seismic sensing data.

1 is a flowchart for controlling an input / output signal of an acoustic wave indoor measurement experiment. In the case of a seismic laboratory test device, a signal was generated using a pulser / receiver device. The pulser part of the pulser / receiver continuously generates an analog signal with one waveform, and the signal is output from one channel. There is a weak point that ringing occurs because analog signal is continuously generated, and it is difficult to simulate 3D seismic survey because signal is output from one channel. In addition, since only one waveform is generated, various sound sources cannot be simulated. In the case of a seismic indoor test apparatus using a pulser / receiver, it is difficult to simulate and control the sound source because the user uses a built-in sound source, not a user.

Reference: Korean Registered Patent No. 10-1867754 (System and method for operating 3-axis precision position control and real-time data acquisition during seismic survey of marine seismic wave)

By using the waveform generator, it is possible to provide a system for controlling the 3D marine acoustic wave indoor measurement test input / output signal by increasing the sound source and the receiver which can be used simultaneously.

In order to compensate for the case that the signal is weak and does not have enough energy to be transmitted to the analog-to-digital converter, a system designed to enhance the 3D marine acoustic wave indoor measurement test input / output signal can be provided.

Three-dimensional marine environment acoustic wave indoor measurement test input and output signal control and reinforcement system, waveform generation unit for generating a plurality of different waveform signals; And an output unit configured to output the signals of the plurality of different waveforms as output signals through a plurality of channels. The output signal may include an input unit configured to receive the received input signal through a plurality of channels as reflected by a model for a 3D marine acoustic wave indoor measurement test.

The waveform generator may generate a signal based on a formula of a waveform input from the user, and include a waveform generator for controlling the sound source, wherein the waveform generator generates a signal at an amplitude output of up to ± 3 V. Generation, the sampling rate may be up to 20 MS / s, and the bandwidth may be DC to 10 MHz.

The waveform generator may suppress a ringing phenomenon by designing a signal to be generated at a time desired by a user using a trigger mode built in the waveform generator.

The output unit may include an amplifier to enhance the output signal, and the amplifier may amplify and output signals output from a plurality of channels of the waveform generator.

The amplifier performs the input and output of the signal through a plurality of input and output channels, can be amplified to an amplitude output of up to ± 140V, the use frequency range is 500KHz ~ 1MHz, the gain can be adjusted to a predetermined value It can be configured to detect by selecting the gain according to the detection conditions.

The input unit includes a preamplifier to reinforce the input signal, wherein the preamplifier performs input and output of a signal through a plurality of input / output channels, amplifies the input signal, and outputs the output signal through a plurality of channels. It transfers to digital converter, gain is 0 ~ 40dB, and can be adjusted by preset size unit.

The input unit may convert an analog signal into a digital signal through the amplified input signal through an analog to digital converter.

The system may designate the same number of channels of the amplifier as the signal of the sound source part at the output part, and design the same number of channels of all the amplifiers at the input part to use the plurality of sound sources and the plurality of receivers at the same time. Can be configured to

Three-dimensional marine environment acoustic wave indoor measurement test input and output signal control and reinforcement method, comprising the steps of generating a plurality of different waveform signals; Outputting the signals of the plurality of different waveforms as output signals through a plurality of channels; And receiving the received input signal through a plurality of channels as reflected on the model for the 3D marine acoustic wave indoor measurement test with respect to the output signal.

Since the number of sound sources and the number of oscillators that can be used at the same time, the exploration process is simpler and shorter than the conventional single-channel, multi-channel and three-dimensional seismic surveys. .

Due to the increase in the number of sound sources and the oscillators that can be driven at the same time, it is possible to acquire sensing data similar to the actual three-dimensional seismic survey.

1 is a flowchart for controlling an input / output signal of an acoustic wave indoor measurement experiment.
2 is a block diagram illustrating a configuration for controlling an input / output signal of a three-dimensional marine environment exploration wave indoor measurement test according to an exemplary embodiment.
3 is a schematic diagram of a three-dimensional sea acoustic seismic survey according to an embodiment.
4 is a flowchart illustrating a three-dimensional sea environment acoustic wave survey sound source control according to an embodiment.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

In the embodiment, a technology for complementing signal input / output and signal reinforcement in matters related to sound sources important in 3D acoustic wave exploration will be described.

2 is a flowchart for controlling an input / output signal of a three-dimensional marine environment exploration wave indoor measurement test according to an exemplary embodiment.

The system 100 is for controlling a 3D marine environment exploration wave indoor measurement test input / output signal, and may include a waveform generator 210, an output unit 220, and an input unit 230.

In the case of a seismic indoor measurement test, a seismic test is conducted to verify the measured data. At this time, when simulating sound source in seismic numerical test, it should be simulated similar to seismic indoor measurement test.

The waveform generator 210 may generate signals of a plurality of different waveforms. The waveform generator 210 may include a pulse null computer and a waveform generator. The waveform generator may generate a signal based on a formula of a waveform input from a user through a personal computer.

The waveform generator is designed to generate a signal at a time desired by a user using a trigger mode to suppress afterimage phenomenon. The signal generated by the waveform generator may be output through a plurality of channels.

The waveform generator generates signals with amplitude outputs up to ± 3V, sampling rates up to 20MS / s and bandwidths up to DC to 10MHz. The waveform generator's bandwidth ranges from DC to 10MHz, making it suitable for seismic detection in marine environments, where the frequency range is several kilohertz to several hertz.

In addition, the sampling rate is up to 20MS / s, which makes it possible to output the desired waveform more accurately, which is suitable for sea acoustic seismic survey using various sound sources. By generating various signals through the waveform generator, various studies are possible according to the purpose of experiment.

The output unit 220 may include an amplifier and a transducer to reinforce the signal (output signal) output from the waveform generator 210. The amplifier performs input and output of signals through a plurality of input and output channels, and can be amplified to an amplitude output of up to ± 140V. The operating frequency range is 500KHz to 1MHz. In addition, amplified signals can be output from a plurality of channels (for example, two channels), and gain can be adjusted to 26 dB, 30 dB, 32 dB, or 34 dB. It can be designed to be.

The input unit 230 may include a pre-amplifier to enhance the signal input to the transducer and the input unit. The preamplifier may be composed of a plurality of input / output channels, and may amplify the input signal (input signal), output the plurality of channels, and transmit the same to the analog-to-digital converter. At this time, the gain is 0 ~ 40dB and can be adjusted in units of a predetermined size (for example, 5dB).

In this case, when designing the amplifier and the preamplifier, the signal of the sound source portion is designed to have the same number of channels of the amplifier as the sound source, for example, two, and the channel of the preamplifier that amplifies the signal of the receiver portion has the same number as the receiver. For example, it can be designed to be used in four to be used simultaneously two sound sources and four receivers.

According to an embodiment, a general seismic reduction model experiment using a plurality of sound sources and a plurality of oscillators that can be used simultaneously can solve a problem of simulating a three-dimensional seismic survey using one sound source and one oscillator. In addition, the general acoustic wave indoor test apparatus can compensate for the disadvantage that there is only one type of analog signal waveform that can be generated. In the multi-channel, three-dimensional seismic exploration as well as the single channel, the exploration process is simpler and shorter than the conventional seismic reduction model.

4 is a flowchart illustrating a three-dimensional sea environment acoustic wave survey sound source control according to an embodiment. Referring to the three-dimensional marine environment acoustic wave exploration schematic diagram of FIG. 3, the operation of the three-dimensional marine environment acoustic wave exploration sound source control will be described.

The system may generate a plurality of different waveforms through the waveform generator (410). Specifically, a waveform desired by the user may be input to the waveform generator through a personal computer as a mathematical expression. The waveform generator may generate a signal having a waveform according to a formula input from a user. In this case, the signal may be an analog signal. For example, various signals such as Gaussian, chirp, and ricker may be generated through the waveform generator. In this case, the signal generated through the waveform generator generates a signal with an amplitude output of up to ± 3V, the sampling rate is up to 20MS / s, the bandwidth may be DC to 10MHz. Signals generated through the waveform generator may be output to a plurality of channels. In an embodiment, as the signal generated through the waveform generator is output to two channels, two sound sources may be used at the same time. In addition, by forming a trigger mode in the waveform generation, it is possible to suppress the afterimage phenomenon by adjusting the interval of the sound source so that the user can generate an analog signal at a desired time. In addition, it is possible to improve the noise ratio (S / N) by setting the trigger repetition count, the delay time, and the magnitude.

The system may output analog signals of different waveforms generated by the waveform generator through a plurality of channels (eg, two channels) (420). In this case, an amplifier may be designed to enhance the signal output from the waveform generator. The amplifiers can be amplified with an amplitude output of up to ± 140V. The frequency range is 500KHz to 1MHz. The amplifier may be composed of two input / output channels, and amplified signals input through two input channels may be output to two output channels. In addition, the amplifier can output the amplified signal from a plurality of channels (for example, two), and it is possible to adjust the gain to 26dB, 30dB, 32dB, 34dB to select an appropriate gain according to the search conditions. Can explore.

The system may enhance the input / output signal to compensate for the case where the signal input to the transducer of the input unit is weak and does not have enough energy to be delivered to the analog-to-digital converter (430). The system can amplify the input signal reflected on the model for the three-dimensional sea acoustic indoor measurement test. In this case, all amplifiers may be designed to reinforce the input signal. The preamplifier may be composed of a plurality of input / output channels, and amplified input signals may be output to a plurality of channels and transferred to the analog converter. For example, the preamplifier may be configured with four input / output channels, and amplified signals input through the four input channels may be output through the four output channels.

The system according to the embodiment is designed to simulate the actual three-dimensional seismic survey by configuring two sound sources and four oscillators, and can obtain data similar to the actual three-dimensional seismic survey data.

The system according to an embodiment may simplify the exploration process due to the increase in the number of simultaneous driving sound sources and the receiver. In addition, the system can shorten the exploration performance time due to the simultaneous driving of the sound source and the steam of the receiver. In addition, the system can acquire the sensing data similar to the actual three-dimensional seismic survey due to the increase of the sound source and the receiver which can be driven simultaneously. In addition, the system may use sound sources of various waveforms. In addition, the system may prevent afterimages through the trigger mode. In addition, the system can amplify the input and output signals due to the amplifier and preamplifier, and can adjust the amplification ratio.

In one example, the exploration may be performed based on the input information such as the positions and intervals of the plurality of sound sources and the plurality of receivers. In this case, when the location information is input through an input device such as a computer, the sound source and the receiver are automatically moved according to the input information to perform the exploration. The system can receive the position information and the moving speed of the input sound source and the receiver and automatically control the position of the sound source and the receiver in the x-axis, y-axis, and z-axis directions. The system can automatically perform the exploration by moving the sound source and the receiver in the three axis directions of the x-axis, y-axis, and z-axis.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the devices and components described in the embodiments are, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable gate arrays (FPGAs). Can be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of explanation, one processing device may be described as being used, but one of ordinary skill in the art will appreciate that the processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, other processing configurations are possible, such as parallel processors.

The software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or process it independently or collectively. You can command the device. Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. It can be embodied in. The software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner. Software and data may be stored on one or more computer readable recording media.

The method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

Although the embodiments have been described by the limited embodiments and the drawings as described above, various modifications and variations are possible to those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or even if replaced or substituted by equivalents, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the claims that follow.

Claims (9)

In the three-dimensional marine environment acoustic wave indoor measurement test input and output signal control and strengthening system,
A waveform generator for generating a plurality of signals of different waveforms;
An output unit configured to output the plurality of different waveform signals as output signals through a plurality of channels; And
An input unit for receiving the received input signal through a plurality of channels as the reflected output signal reflected to the model for the three-dimensional marine acoustic acoustic wave indoor measurement test
System comprising a. The method of claim 1,
The waveform generator,
A waveform generator for generating a signal based on a formula of a waveform input from a user and controlling a sound source;
The waveform generator generates a signal with an amplitude output of up to ± 3 V, a sampling rate of up to 20 MS / s, and a bandwidth of DC to 10 MHz.
System characterized in that. The method of claim 2,
The waveform generator,
By using the trigger mode built in the waveform generator (Trigger mode) designed to generate a signal at a user desired time to suppress the ringing phenomenon
System characterized in that. The method of claim 1,
The output unit,
An amplifier to augment the output signal,
The amplifier,
Amplifies and outputs signals output from a plurality of channels of the waveform generator.
System characterized in that. The method of claim 4, wherein
The amplifier,
Signal input and output through a plurality of input and output channels, amplification can be amplified output of up to ± 140V, the frequency range is 500KHz ~ 1MHz, gain can be adjusted to a predetermined value in the search conditions Is configured to be selected for exploration
System characterized in that. The method of claim 1,
The input unit,
A preamplifier to enhance the input signal,
The pre-amplifier,
Input and output the signal through a plurality of input and output channels, amplify the input signal and output it to a plurality of channels to be delivered to the analog-to-digital converter, the gain is 0 ~ 40dB, is adjusted in a predetermined size unit
System characterized in that. The method of claim 6,
The input unit,
The amplified input signal is converted into an analog signal to a digital signal through an analog to digital converter
System characterized in that. The method of claim 1,
The system,
Designing the channel of the amplifier in the output unit to the same number as the signal of the sound source portion, and in the input unit to design the same number of channels of all amplifiers to configure a plurality of sound sources and a plurality of receivers to be used at the same time
System characterized in that. In the three-dimensional marine environment acoustic wave indoor measurement test input and output signal control and strengthening method,
Generating a plurality of signals of different waveforms;
Outputting the signals of the plurality of different waveforms as output signals through a plurality of channels; And
Receiving the received input signal through a plurality of channels as reflected on the model for the three-dimensional marine environment acoustic wave indoor measurement test with respect to the output signal
How to include.

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