CN103558632B - A kind of high efficiency seismic physical model single track collecting method and device - Google Patents
A kind of high efficiency seismic physical model single track collecting method and device Download PDFInfo
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- CN103558632B CN103558632B CN201310589108.4A CN201310589108A CN103558632B CN 103558632 B CN103558632 B CN 103558632B CN 201310589108 A CN201310589108 A CN 201310589108A CN 103558632 B CN103558632 B CN 103558632B
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Abstract
The present invention relates to a kind of high efficiency seismic physical model collecting method and device, including: data acquisition parameters is set；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；After the seismic channel data of one big gun gathers, excite transducer and receive the equal negative sense of transducer and move a big gun from, big gun number cumulative；Whether the big gun number of the geological data that judgement currently to gather is even number；If it is, receive transducer negative sense under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer forward gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Description
Technical field
The present invention relates to seismic exploration technique field, particularly to a kind of high efficiency seismic physical model single track collecting method and device.
Background technology
Earthquake simulation is divided into earthquake numerical simulation and seismic physical model simulation, and earthquake simulation technology plays an important role in seismic prospecting always.By earthquake simulation technology, it is possible to check the correctness that all kinds of dielectric resilient ripple is theoretical, promote the development of elastic wave theory；The optimization design of the observation system based on model is provided, it is ensured that the quality of field earthquake data acquisition for seismic prospecting；Normal data body, the correctness of inspection seismic processes is provided for seism processing；It addition, also verifiably shake the correctness etc. of data interpretation result.
3-D seismics inherently large-scale a production is moved, it relates to substantial amounts of financial resources, material resources and human resources, workload is big, production time length, investment height, technological difficulties are many, need now the high accuracy surface modelling test carried out, its scale is huger, investment is likely to turn over several times, therefore in the urgent need to utilizing earthquake simulation technology to reduce experimentation cost, improves research effect.But, in the face of the three-dimensional information of magnanimity, numerical simulation just sinks into the condition having too many difficulties to cope with, and up to today of computer technology high speed development, this situation remains without the change that matter occurs.But, seismic physical model simulation but has small investment, timeliness is high, it is little to relate to face, easily realize the features such as method tackling key problem；It also has other one big advantage, physical model is a kind of real medium, the signal dynamic characteristic when this Propagation, as the attenuating mechanism of amplitude, phase place change mechanism, frequency loss, spread speed etc. all meet the natural law, therefore has more verity.So, seismic physical model technical development all ratios both domestic and external were comparatively fast in recent years, and became an indispensable technology in complicated oil and gas exploration and seismic method tackling key problem.
Actual seismic data gathers in the wild, and seismic physical model data gather in the lab, therefore both some differences on acquisition method.Such as: the former explores the actual geological structure in underground liking work area, and the latter is with this geological structure for the seismic velocity model after the simplification of blueprint；The former often puts a hundreds and thousands of road of big gun to receive, and the latter is that single big gun single track receives；The seismic wave that the former excites, receive is the sound wave wave band in frequency hundreds of week below, and the latter excites, what receive is frequency several ten thousand week above supersonic range etc..In view of above-mentioned difference, the data acquisition of seismic physical model experiment has himself feature, including: physical model makes, ultrasonic excitation, receiving transducer development, laboratory seismic instrument, equipment are equipped with, observation system design and parameter calculate demonstration, the workflow of acquisition system hardware controls, software work principle and collection panel, are required for carrying out exploring, test and studying.
Seismic physical model experiment is that the field work of seismic prospecting is carried out at experiment lab simulation, in order to complete the two and three dimensions collecting work actual with field, as it is shown in figure 1, be tradition earthquake physical model data harvester block diagram.In FIG, when single track data acquisition starts, computer is directly to exciting transducer and reception transducer to position, after computer position feed back signal after have received transducer location, control synchronizer trigger excitation ultrasound ripple again, carrying out single track data acquisition, after having gathered a track data, synchronizer trigger feeds back signal to computer, computer controls transducer location again, then controlling synchronizer trigger again to be acquired, this is the process of constantly circulation, until all track data collections complete.In this gatherer process, controlled excite transducer and receive transducer location by computer, position rear computer and to wait synchronizer trigger feedback signal, just can carry out lower collection together, such a is controlled location and the acquisition mode triggered respectively by computer, and collection per second needs milliseconds up to a hundred, and eye-observation has obvious pause process, reduce collecting efficiency, it is necessary to study more efficient single track acquisition method and improve the conventional efficient of physical modeling.
The related to the present invention document monograph published: Zhao Qun etc. (Zhao Qun etc. continuance data acquisition system of ultrasonic seismic physical modeling. Advances in Geophysics, 2004,19 (4): 786～788) ultrasonic earthquake physical model experiment data continuous collecting system is described, the interruption acquisition mode that tradition is used by this system changes into continuous acquisition method, practical application reliability is high, and intelligence degree is high.But this article does not have the principle with regard to concrete gatherer process and collection panel and implementation to set forth, in practice, this technical scheme cannot be promoted.
Summary of the invention
For solving the problems referred to above, the present invention proposes a kind of high efficiency seismic physical model collecting method and device, is improving on the basis of seismic physical model data acquisition efficiency so that technical scheme is easy to spread.
For achieving the above object, the invention provides a kind of high efficiency seismic physical model collecting method, including:
Data acquisition parameters is set；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
After the seismic channel data of one big gun gathers, excite transducer and receive the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Whether the big gun number of the geological data that judgement currently to gather is even number；If it is, receive transducer negative sense under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer forward gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Optionally, in an embodiment of the present invention, the described step receiving the data that transducer negative sense gathers seismic channel under Serve Motor Control includes:
Described servomotor receiving range signal；
Servomotor according to described distance signal positions, and drives described reception transducer negative sense to move；
Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；
Described synchronizer trigger is to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer output source signal, and after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, the described step receiving the data that transducer forward gathers seismic channel under Serve Motor Control includes:
Described servomotor receiving range signal；
Servomotor according to described distance signal positions, and drives described reception transducer forward to move；
Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；
Described synchronizer trigger is to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer output source signal, and after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, described distance signal obtains according to described track pitch and described number of channels.
For achieving the above object, the invention provides another kind of high efficiency seismic physical model collecting method, including:
Data acquisition parameters is set；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
After the seismic channel data of one big gun gathers, excite transducer and receive the equal forward of transducer and move a big gun from, big gun number cumulative；
Whether the big gun number of the geological data that judgement currently to gather is even number；If it is, receive transducer forward under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer negative sense gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
For achieving the above object, present invention also offers a kind of high efficiency seismic physical model data acquisition unit, this device includes:
Parameter set unit, is used for arranging data acquisition parameters；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Transducer positioning unit, after gathering for the seismic channel data of a big gun, excites transducer and receives the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Whether seismic channel data collecting unit, be even number for judging the big gun number of the geological data currently gathered；If it is, receive transducer under Serve Motor Control to gather the data of negative sense seismic channel；Otherwise, under Serve Motor Control, receive transducer gather the data of forward seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Optionally, in an embodiment of the present invention, described seismic channel data collecting unit includes:
Signal receiving module, is used for making described servomotor receiving range signal；
Locating module, positions for servomotor according to described distance signal, drives described reception transducer negative sense to move；
Synchronous signal obtaining module, sends signal for the pulse generator in described servomotor and drives synchronizer trigger, produce synchronizing signal；
Data acquisition module, for described synchronizer trigger to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excite transducer output source signal, after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Data acquisition stop condition module, the enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, described seismic channel data collecting unit includes:
Signal receiving module, is used for making described servomotor receiving range signal；
Locating module, positions for servomotor according to described distance signal, drives described reception transducer forward to move；
Synchronous signal obtaining module, sends signal for the pulse generator in described servomotor and drives synchronizer trigger, produce synchronizing signal；
Data acquisition module, for described synchronizer trigger to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excite transducer output source signal, after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Data acquisition stop condition module, the enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, the distance signal that described signal receiving module receives obtains according to described track pitch and described number of channels.
For achieving the above object, present invention also offers a kind of high efficiency seismic physical model data acquisition unit, including:
Parameter set unit, is used for arranging data acquisition parameters；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Transducer positioning unit, after gathering for the seismic channel data of a big gun, excites transducer and receives the equal forward of transducer and move a big gun from, big gun number cumulative；
Whether seismic channel data collecting unit, be even number for judging the big gun number of the geological data currently gathered；If it is, receive transducer forward under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer negative sense gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Technique scheme has the advantages that the technical scheme of the application adopts driven by servomotor to excite transducer launch ultrasound wave and receive transducer location, an all of seismic channel of big gun of walking, and gathers data.Driven by servomotor receives transducer and all seismic channel data of every big gun is acquired, and, whether the big gun number according to the geological data currently gathered is even number, receive transducer positive/negative to the data gathering seismic channel under Serve Motor Control, pause from without the location after obvious per pass earthquake data acquisition, this positioned by computer-controlled servo motor, then removed to control the acquisition mode of synchronizer trigger by servomotor, servomotor location and the longer latency of synchronizer trigger triggering is controlled respectively without tradition acquisition mode Computer, picking rate significantly improves.
Further, the speed that Serve Motor Control reception transducer positions is quickly, and servomotor is triggered by synchronizer trigger and excites transducer to send ultrasound wave, until the time receiving transducer reception signal is very short, during all per pass data acquisitions, from positioning, being triggered to, last reception hyperacoustic time is very short, it does not have in conventional operation mode, pause in that obvious location, significantly improves the collecting efficiency of single track data.
Further, this technical scheme can easily realize under prior art conditions, it is easy to promotes.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is tradition earthquake physical model data harvester block diagram；
Fig. 2 is one of high efficiency seismic physical model collecting method flow chart of one that the present invention proposes；
Fig. 3 is the two of the high efficiency seismic physical model collecting method flow chart of one that the present invention proposes；
Fig. 4 is the high efficiency seismic physical model data acquisition unit block diagram of one that the present invention proposes；
Fig. 5 is seismic physical model data collecting system panel schematic diagram in the present embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As in figure 2 it is shown, the high efficiency seismic physical model collecting method flow chart of one proposed for the present invention.Including:
Step 101): data acquisition parameters is set；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Step 102): after the seismic channel data of a big gun gathers, excite transducer and receive the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Step 103): whether the big gun number of the geological data that judgement currently to gather is even number；If it is, receive transducer negative sense under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer forward gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Optionally, in an embodiment of the present invention, the described step receiving the data that transducer negative sense gathers seismic channel under Serve Motor Control includes:
Described servomotor receiving range signal；
Servomotor according to described distance signal positions, and drives described reception transducer negative sense to move；
Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；
Described synchronizer trigger, to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer to send impulse wave, and after being propagated by seismic physical model, reflection seismic waves is received transducer collection；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, the described step receiving the data that transducer forward gathers seismic channel under Serve Motor Control includes:
Described servomotor receiving range signal；
Servomotor according to described distance signal positions, and drives described reception transducer forward to move；
Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；
Described synchronizer trigger, to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer to send impulse wave, and after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, described distance signal obtains according to described track pitch and described number of channels.
As it is shown on figure 3, the two of the high efficiency seismic physical model collecting method flow chart of one proposed for the present invention.Including:
Step 301): data acquisition parameters is set；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Step 302): after the seismic channel data of a big gun gathers, excite transducer and receive the equal forward of transducer and move a big gun from, big gun number cumulative；
Step 303): whether the big gun number of the geological data that judgement currently to gather is even number；If it is, receive transducer forward under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer negative sense gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
As shown in Figure 4, the high efficiency seismic physical model data acquisition unit block diagram of one proposed for the present invention.This device includes:
Parameter set unit 201, is used for arranging data acquisition parameters；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Transducer positioning unit 202, after gathering for the seismic channel data of a big gun, excites transducer and receives the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Whether seismic channel data collecting unit 203, be even number for judging the big gun number of the geological data currently gathered；If it is, receive transducer under Serve Motor Control to gather the data of negative sense seismic channel；Otherwise, under Serve Motor Control, receive transducer gather the data of forward seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Optionally, in an embodiment of the present invention, described seismic channel data collecting unit 203 includes:
Signal receiving module, is used for making described servomotor receiving range signal；
Locating module, positions for servomotor according to described distance signal, drives described reception transducer negative sense to move；
Synchronous signal obtaining module, sends signal for the pulse generator in described servomotor and drives synchronizer trigger, produce synchronizing signal；
Data acquisition module, for described synchronizer trigger to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, transducer is excited to send impulse wave, after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Data acquisition stop condition module, the enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, described seismic channel data collecting unit 203 includes:
Signal receiving module, is used for making described servomotor receiving range signal；
Locating module, positions for servomotor according to described distance signal, drives described reception transducer forward to move；
Synchronous signal obtaining module, sends signal for the pulse generator in described servomotor and drives synchronizer trigger, produce synchronizing signal；
Data acquisition module, for described synchronizer trigger to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, transducer is excited to send impulse wave, after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Data acquisition stop condition module, the enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
Optionally, in an embodiment of the present invention, the distance signal that described signal receiving module receives obtains according to described track pitch and described number of channels.
Seismic physical model data acquisition unit each several part running shown in Fig. 4 also has following a kind of situation:
Parameter set unit 201, is used for arranging data acquisition parameters；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Transducer positioning unit 202, after gathering for the seismic channel data of a big gun, excites transducer and receives the equal forward of transducer and move a big gun from, big gun number cumulative；
Whether seismic channel data collecting unit 203, be even number for judging the big gun number of the geological data currently gathered；If it is, receive transducer forward under Serve Motor Control to gather the data of seismic channel；Otherwise, under Serve Motor Control, receive transducer negative sense gather the data of seismic channel, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Embodiment:
Step S101): computer installation data acquisition parameters；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Step S102): whether the big gun number of the geological data that judgement currently to gather is even number；
If it is, described servomotor receiving range signal；According to distance signal, servomotor positions, and drives reception transducer negative sense to move；Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；Described synchronizer trigger, to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer to send impulse wave, and after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, analog-digital converter stores data in after the data of described reception transducer collection are carried out analog digital conversion in the internal memory of computer immediately；Servomotor often positions once, receives transducer and just gathers a track data；
If the big gun number of the geological data currently gathered is odd number, then servomotor positions, and drives reception transducer forward to move, and when other acquisition modes position with negative sense, acquisition mode is the same.
Step S103): after one data acquisition, enumerator in described servomotor adds one in original count results, if the number of channels that the accumulated value of enumerator comprises less than or equal to the current big gun gathered, then the pulse generator in described servomotor continues to send signal driving synchronizer trigger, repeats step 102)；Until the number of channels that enumerator accumulated value comprises more than the current big gun gathered, the pulse generator in described servomotor stops launching impulse wave.
Because the speed of Serve Motor Control reception transducer location is quickly, and servomotor is triggered by synchronizer trigger and excites transducer to send ultrasound wave, until the time that reception transducer receives seismic signal is very short, during all per pass data acquisitions, whether the big gun number according to the geological data currently gathered is even number, receive transducer positive/negative to the data gathering seismic channel under Serve Motor Control, so, from location, it is triggered to the time finally collecting seismic wave very short, that obvious location in conventional operation mode is not had to pause, so replaced the partial function of computer of the prior art by the servomotor in the application, significantly improve the collecting efficiency of single track data.
Step S104): after the seismic channel data of a big gun gathers, excite transducer and receive the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Repeat step S102, S103, until big gun number is more than big gun number, complete seismic physical model data acquisition.
Based on the technical scheme of above-described embodiment, a concrete concrete instance is given below:
As it is shown in figure 5, be seismic physical model data collecting system panel schematic diagram in the present embodiment.In the system panel data acquisition mainly for the seismic channel in a big gun, after the earthquake data acquisition of a big gun, after being positioned by Serve Motor Control, the data of the seismic channel in next big gun are acquired by the system panel again through Fig. 5.
Systematic parameter is as follows: monolateral reception, and big gun receives from 5mm, track pitch 1.25mm, 180 road, total big gun number 100 big gun.
1, require first to set up on vee acquisition system panel to gather file according to gathering, with walking while adopt control (FDA) to set up a two-dimentional file (ID:23), wherein:
C1/180 represents that every big gun number of channels 180, C1 represents from first；
S1/100 represents that every line big gun number is 100, S1 represent from the first bombard；
L1/1 represents that line number is 1(two dimension), L1 represents from First Line.
2, according to built file by other control (ID:21, ID:22 as corresponding in Fly0；The ID:26 that ID:14, DSF corresponding for ID:20, E corresponding for ID:24, SuS corresponding for ID:25, C corresponding for DL is corresponding,Corresponding ID:27) couple with it one complete acquisition system of composition.Wherein:
-the 223.75 of ID:21 represent the distance (mm) passed by big gun 180 road to negative sense, and X1-Y represents that collection is for X1 axle Y-direction；
X1-Y-5, the X2-Y-5. of ID:25 represents that transmitting all moves a big gun from 5mm to negative direction with gathering axle；
The 0/100 of ID:24 represents that big gun number is 100, and counting is started from scratch；
ID:20 is a selection switch relying on dry big gun counting ID:24, here represents and walks ID:21 when big gun is counted as even number, walks ID:22 during for odd number；
ID:14 represents that collection terminates；
ID:27 display system state, must hang up in ID:21, ID:22, ID:25.
ID:26 display gathers waveform, hangs up in ID:23.
3, checked servomotor, capture card (A/D) normal operation determining by mouse point on ID:0, then clicks on toolbar after all connecting with computerControl can bring into operation this acquisition system.
4, after running acquisition system, seismic physical model data efficient collecting work starts, computer is to servomotor transmission range signal, distance signal length is 1.25 × 180=225mm, servomotor positions according to distance signal, reception transducer is driven to move, next driven by servomotor synchronizer trigger is used, synchronizer trigger sends signal driving and excites transducer and A/D converter, transducer is excited to send impulse wave, after being propagated by seismic physical model, reflection seismic waves is received transducer collection, simultaneously, the data that reception transducer collects are carried out analog digital conversion by A/D converter.More than excite transducer and A/D converter to receive synchronizing signal to start working.In the process, driven by servomotor receives transducer, 180 roads of walking, and under Serve Motor Control, 180 track datas of every big gun is acquired, it does not have significantly positioning pause, picking rate significantly improves.After having gathered 180 track datas, exciting a transducer and reception transducer mobile big gun simultaneously from 5mm, then to start the collection of next big gun geological data, after 100 big gun data acquisitions complete, the two dimensional data acquisition of seismic physical model terminates.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (4)
1. a seismic physical model collecting method, it is characterised in that including:
Data acquisition parameters is set；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
After the seismic channel data of one big gun gathers, excite transducer and receive the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Whether the big gun number of the seismic channel data that judgement currently to gather is even number；If it is, receive transducer negative sense under Serve Motor Control to gather seismic channel data；Otherwise, under Serve Motor Control, receive transducer forward gather seismic channel data, until big gun number is more than big gun number, complete seismic physical model data acquisition；
Wherein, the described step receiving transducer negative sense collection seismic channel data under Serve Motor Control includes:
Described servomotor receiving range signal；
Servomotor according to described distance signal positions, and drives described reception transducer negative sense to move；
Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；
Described synchronizer trigger is to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer output source signal, and after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels；
The described step receiving transducer forward collection seismic channel data under Serve Motor Control includes:
Described servomotor receiving range signal；
Servomotor according to described distance signal positions, and drives described reception transducer forward to move；
Pulse generator in described servomotor sends signal and drives synchronizer trigger, produces synchronizing signal；
Described synchronizer trigger is to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excites transducer output source signal, and after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal until enumerator accumulated value is more than number of channels.
2. the method for claim 1, it is characterised in that described distance signal obtains according to described track pitch and described number of channels.
3. a seismic physical model data acquisition unit, it is characterised in that this device includes:
Parameter set unit, is used for arranging data acquisition parameters；Wherein, described parameter includes: big gun from, track pitch, number of channels and big gun number；
Transducer positioning unit, after gathering for the seismic channel data of a big gun, excites transducer and receives the equal negative sense of transducer and move a big gun from, big gun number cumulative；
Whether seismic channel data collecting unit, be even number for judging the big gun number of the seismic channel data currently gathered；If it is, receive transducer under Serve Motor Control to gather negative sense seismic channel data；Otherwise, under Serve Motor Control, receive transducer gather forward seismic channel data, until big gun number is more than big gun number, complete seismic physical model data acquisition；
Wherein, described seismic channel data collecting unit includes:
Signal receiving module, is used for making described servomotor receiving range signal；
Locating module, positions for servomotor according to described distance signal, drives described reception transducer negative sense/forward to move；
Synchronous signal obtaining module, sends signal for the pulse generator in described servomotor and drives synchronizer trigger, produce synchronizing signal；
Data acquisition module, for described synchronizer trigger to exciting transducer and analog-digital converter to provide synchronizing signal, under the effect of synchronizing signal, excite transducer output source signal, after being propagated by seismic physical model, reflection seismic waves is gathered by described reception transducer；Meanwhile, the data of described reception transducer collection are carried out analog digital conversion by analog-digital converter；
Data acquisition stop condition module, the enumerator in described servomotor adds one in original count results, and described pulse generator continues to send signal and drives synchronizer trigger until enumerator accumulated value is more than number of channels.
4. device as claimed in claim 3, it is characterised in that the distance signal that described signal receiving module receives obtains according to described track pitch and described number of channels.
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| CN109270576B (en) * | 2018-11-06 | 2020-08-11 | 中国石油天然气股份有限公司 | Multichannel three-dimensional seismic physical simulation data acquisition method and device |
| CN112731519B (en) * | 2019-10-28 | 2024-06-25 | 中国石油天然气集团有限公司 | Method and device for determining tremor time interval |
| CN112014886B (en) * | 2020-09-08 | 2023-10-27 | 中煤科工集团西安研究院有限公司 | Excitation source array hybrid acquisition method and system for earthquake physical simulation |
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