CN102355347A - Excitation and reception signal synchronizing system in seismic exploration - Google Patents

Excitation and reception signal synchronizing system in seismic exploration Download PDF

Info

Publication number
CN102355347A
CN102355347A CN2011101926206A CN201110192620A CN102355347A CN 102355347 A CN102355347 A CN 102355347A CN 2011101926206 A CN2011101926206 A CN 2011101926206A CN 201110192620 A CN201110192620 A CN 201110192620A CN 102355347 A CN102355347 A CN 102355347A
Authority
CN
China
Prior art keywords
clock
gps clock
excite
excitation apparatus
gps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011101926206A
Other languages
Chinese (zh)
Inventor
唐成鸽
尤桃如
沈月芳
黄东定
朱军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
No6 Geophysical Survey Battalion East China Petroleum Bureau
China Petrochemical Corp
Sinopec Huadong Petroleum Bureau
Original Assignee
No6 Geophysical Survey Battalion East China Petroleum Bureau
China Petrochemical Corp
Sinopec Huadong Petroleum Bureau
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by No6 Geophysical Survey Battalion East China Petroleum Bureau, China Petrochemical Corp, Sinopec Huadong Petroleum Bureau filed Critical No6 Geophysical Survey Battalion East China Petroleum Bureau
Priority to CN2011101926206A priority Critical patent/CN102355347A/en
Publication of CN102355347A publication Critical patent/CN102355347A/en
Pending legal-status Critical Current

Links

Images

Abstract

The invention provides an excitation and reception signal synchronizing system in seismic exploration. The system comprises a first GPS clock, an excitation apparatus, a second GPS clock and a reception apparatus. The excitation apparatus and the reception apparatus respectively connect with the first GPS clock and the second GPS clock. Both the first GPS clock and the second GPS clock communicate with a same satellite. Under an effect of a same GPS clock signal, both the excitation apparatus and the reception apparatus are subjected to synchronized movement, and a synchronized clock signal is received. According to the invention, accurate synchronization of multiple methods and multiple devices in seismic exploration are realized, construction capability of a 400 series digital seismograph and other types of digital seismographs at a mountain area and various complex surface condition areas is developed further, the system is flexible and convenient, since devices and personnel investments are reduced, production cost is saved, and the system has a high popularization application value.

Description

Excite, receive signal synchronizing system in the seismic prospecting
Technical field
The present invention relates to a kind of clock system, especially in seismic prospecting with the device of precise synchronization between blaster and the digital seismics instrument, excite, receive signal synchronizing system in specifically a kind of seismic prospecting.
 
Background technology
At present, excite in seismic prospecting, in the receiving system, when the above overlength distance of tens of kilometers, be difficult to accomplish that precise synchronization starts between various dissimilar digital seismics instruments and the various dissimilar blaster.Especially instrument acceptance point and shot point more are difficult to accomplish synchronous initiation under the state of overlength distance or improper operation.For example: in the seismic exploration in complicated mountain region; Distance between instrument and the shot point often reaches tens of kilometers even longer; The centre often also has high mountain to intercept; Radio signal can not normal propagation; Cause conventional wireless synchronous system of source to use; Therefore at shot point and instrument acceptance point extra long distance or have between them under the situation that high mountain stops, the stationary problem between instrument and the shot point is the technical barrier in the seismic prospecting always.
In seismic exploration routinely, often need do the contrast operation of several different methods, many dissimilar digital seismics instruments.In contrast test operation in the past, owing to do not have that seismic prospecting excites, the synchro system of receiving system, so have to all adopt subshot, repeat to arrange the construction method that row receive.Time-consuming bothersome, efficient is low, cost is high.Can't guarantee to excite consistency, experimental factor is not single, is unfavorable for the correct judgement of result of the test.In the seismic prospecting of deep; Since between shot point and the acceptance point apart from overlength; Head and shoulders above the communication distance of common radio platform commonly used, common wireless relay platform; All can only adopt in the past manually method by the time of making an appointment detonate shot point, start instrument and receive; Synchronization accuracy can't guarantee, is unfavorable for high-quality earthquake data acquisition.
?
Summary of the invention
The objective of the invention is to adopting subshot in the seismic exploration routinely at present, repeating to arrange the construction method that row receive; Existing time-consuming bothersome, efficient is low, cost is high, can't guarantee to excite consistency; Experimental factor is not single, is unfavorable for the correct problem of judging of result of the test; With in the seismic prospecting of deep; Since between shot point and the acceptance point apart from overlength; Head and shoulders above the communication distance of common radio platform commonly used, common wireless relay platform; All can only adopt in the past manually method by the time of making an appointment detonate shot point, start instrument and receive; Existing synchronization accuracy can't guarantee; The problem that is unfavorable for high-quality earthquake data acquisition, propose a kind of not only flexible, but also the seismic prospecting of precise synchronization in excite, receive signal synchronizing system.
Technical scheme of the present invention is:
Excite, receive signal synchronizing system in a kind of seismic prospecting; It comprises first gps clock, excitation apparatus, second gps clock and receiving system; Described excitation apparatus is connected corresponding first gps clock and second gps clock respectively with receiving system; First gps clock and second gps clock all communicate with same satellite, receive synchronizing clock signals.
The pulse spacing of first gps clock of the present invention and the second gps clock signal all was 60 seconds, and pulse duration is 20ms.
The clock accuracy of first gps clock of the present invention and second gps clock is 30ns.
Excitation apparatus of the present invention is a blaster.
Receiving system of the present invention is the digital seismics instrument, and described digital seismics instrument is magnificent prosperous si2000.
Excitation apparatus of the present invention is connected corresponding first gps clock and second gps clock through corresponding excitation apparatus interface circuit, receiving system interface circuit respectively with receiving system.
Receiving system interface circuit of the present invention comprises switch and optical coupling isolator, and the output of second gps clock connects the input of optical coupling isolator, and the output of optical coupling isolator connects the input of receiving system through switch.
Excitation apparatus interface circuit of the present invention comprises the clock processing frequency dividing circuit; The level translation drive circuit; Triode; Diode and transformer; The output of second gps clock connects the clock signal input terminal of clock processing frequency dividing circuit; The drive signal output of clock processing frequency dividing circuit connects the input of level translation drive circuit; The drive signal output of level translation drive circuit links to each other with the base stage of triode; The grounded emitter of triode; The collector electrode of triode and the positive pole of diode; One end of transformer links to each other; The other end of transformer all is connected power supply with the negative pole of diode, and the secondary coil output of transformer connects the input of excitation apparatus as the output of excitation apparatus interface circuit.
Excitation apparatus interface circuit of the present invention also comprises and stops the clock circuits for triggering, and the signal input part that stops the clock circuits for triggering connects the period input module, and the output that stops the clock circuits for triggering connects the signal input end of clock processing frequency dividing circuit.
Beneficial effect of the present invention:
Excite, receive signal synchronizing system in the seismic prospecting of the present invention; Successfully solved the problem of clock precise synchronization; It has adopted satellite gps clock signal to inject the method for digital seismics instrument and blaster simultaneously; Make between instrument overlength distance or that the high mountain obstruct is arranged and the shot point and realize precise synchronization; The quality and the precision of conventional and unconventional seismic prospecting have been improved; Fully excavate and brought into play the instrument maximum efficiency; Improved operating efficiency; Strengthened the ability that solves geological problem with method of seismic prospecting, had important practical significance.
Excite, receive signal synchronizing system in the seismic prospecting of the present invention, guarantee the precise synchronization of multi-method exploration, many covering devices, guarantee the precise synchronization of overlength distance device; Be better than present seismic prospecting industry standard, guaranteed obtaining of high-quality seismic data.
The first gps clock signal of the present invention and second gps clock are actually and are derived from same Satellite GPS clock signal, are synchronous under the effect of same gps clock signal, under the effect of this same gps clock, and the action of both sides' precise synchronization.
Excite, receive signal synchronizing system in the seismic prospecting of the present invention, made things convenient for construction, guaranteed quality, reduced cost, improved benefit.Simultaneously, according to the difference of open-air actual conditions, the concrete grammar of dealing with problems is also different, but basic principle is identical.According to actual conditions, flexible Application, configuration excites accordingly, receiving system, solves the practical problem in producing, and has general realistic meaning.
At present, excite, receive signal synchronizing system in the seismic prospecting of the present invention and in a plurality of large-scale seismic prospecting projects, obtained practical application.In the 3-d seismic exploration of depression waist beach, Jinhu County; More than 2000 physical points of the synchronous contrast test of 428XL instrument and magnificent prosperous Si2000 instrument; Cave in time concave three-dimensional seismic prospecting of the bent pool in Hai'an; More than 600 physical points of synchronous contrast test of the conventional wave detector of 428Lite instrument DSU digital detector and 428XL instrument; By the minimum 1000 yuan of calculating of each physical points; Save more than 260 ten thousand yuan altogether, obtained good effect and economic benefit for two.
?
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Fig. 2 is the circuit diagram of excitation apparatus interface circuit of the present invention.
Fig. 3 is the circuit diagram of receiving system interface circuit of the present invention.
 
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; Excite, receive signal synchronizing system in a kind of seismic prospecting; It comprises first gps clock (model can be DZQS-1), excitation apparatus, second gps clock (model can be DZQS-1) and receiving system; Described excitation apparatus and receiving system insert respectively and are actually corresponding first gps clock and second gps clock that belongs to same satellite; First gps clock and second gps clock all communicate with same satellite, receive synchronizing clock signals.Its synchronization accuracy meets and is better than the oil and gas industry standard SY/T5314-2004 of the People's Republic of China (PRC).
The pulse spacing of first gps clock of the present invention and the second gps clock signal all was 60 seconds, and pulse duration is 20ms.
The clock accuracy of first gps clock of the present invention and second gps clock is 30ns.
Excitation apparatus of the present invention is a blaster; Receiving system is the digital seismics instrument, and described digital seismics instrument is magnificent prosperous si2000; Perhaps adopting model is other digital seismics instrument such as 428XL or 408UL.
Excitation apparatus is connected corresponding first gps clock and second gps clock through corresponding excitation apparatus interface circuit, receiving system interface circuit respectively with receiving system.
As shown in Figure 3, receiving system interface circuit of the present invention comprises switch and optical coupling isolator, and the output of second gps clock connects the input of optical coupling isolator, and the output of optical coupling isolator connects the input of receiving system through switch.
When the digital seismics instrument that adopts is magnificent prosperous si2000; As shown in Figure 2; Excitation apparatus interface circuit of the present invention comprises clock processing frequency dividing circuit (adopting conventional frequency dividing circuit); Level translation drive circuit (adopting conventional drive circuit); Triode; Diode and transformer; The output of second gps clock connects the clock signal input terminal of clock processing frequency dividing circuit; The drive signal output of clock processing frequency dividing circuit connects the input of level translation drive circuit; The drive signal output of level translation drive circuit links to each other with the base stage of triode; The grounded emitter of triode; The collector electrode of triode and the positive pole of diode; One end of transformer links to each other; The other end of transformer all is connected power supply with the negative pole of diode, and the secondary coil output of transformer connects the input of excitation apparatus as the output of excitation apparatus interface circuit.
Excitation apparatus interface circuit of the present invention also comprises and stops the clock circuits for triggering, and the signal input part that stops the clock circuits for triggering connects the period input module, and the output that stops the clock circuits for triggering connects the signal input end of clock processing frequency dividing circuit.
Because gps clock is that the time basic precision in clock source is very high; Generally reach the precision of 30ns; Far above the requirement of seismic prospecting synchronization accuracy 1ms,, be very suitable so select for use gps clock source time-base signal on precision, to satisfy specification requirement as the lock-out pulse time reference.
Requirement to the gps clock source is:
1, accuracy of timekeeping: ± 0.1 ms; Timing stability: 0.005ppm; Gps time precision: 30ns.
2, minute output pulse width 20ms ± 1 ms, output amplitude is a Transistor-Transistor Logic level, output current can drive more than a TTL gate circuit.
3, has induction time break aqueduct, to strengthen the flexibility of using, under the situation that can use wireless focus synchronizer; Be not subjected to minute restriction of output pulse; At any time all can blow out, can note accurate gps time again simultaneously, to improve field work efficient.
4, when the time break input is arranged, stop clock automatically and show to stop clock time with record, be accurate to 0.1 millisecond.
5, have the liquid crystal display screen backlight function, be convenient to watch evening screen display (controlled as required by panel-switch, open evening, and close daytime, to save power consumption).
6, delay switching-off function will continue to pin " OFF " 2-3 and can shut down second when shutdown, bump button to prevent open-air mistake.
7, when switching to external power supply, continue to pin switch 2-3 second, purpose is to prevent that bumping switch causes outage by mistake in the field.
8, rational panel and Interface design are conveniently docked with instrument.Plug all is arranged on upper side or certain side, and it is convenient to be convenient to field work.
9, wide temperature range :-20 ℃-60 ℃.In order to adapt to wide temperature range, Primary Component adopts high-grade device army grade.At the lead-in wire of outdoor use, antenna, seven core leads, external power supply lead-in wire etc., below-20 ℃ the time, not by adfreezing.
10, dustproof, rainproof, reliable.Adopt welded more on the structure, and few employing plug prevents to contact bad.
First gps clock that is inserted and the clock signal of second gps clock are taken from the satellite clock signal; Through choose reasonable and restriction; The gps clock signal of blaster and the gps clock signal of seismic instrument; Be actually and get same satellite-signal; As long as the two all action under the effect of this same gps satellite clock signal; Just can guarantee that seismic instrument starts and the shot point blaster detonates synchronously, and can guarantee accurate synchronized relation between them.Receive the Satellite GPS clock signal respectively through first gps clock and second gps clock; And this signal is linked into excitation apparatus; With 428XL, 408UL instrument is example, as the starting impulse of instrument, simultaneously the gps clock signal is injected excitation apparatus and be the blaster system shot point that detonates.Because the two is action under the effect of same gps clock signal, thus guaranteed the two at the synchronization synchronization action, promptly shot point detonate and the opening entry both sides of instrument occur in synchronization, guaranteed the accurate synchronized relation of both sides.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.

Claims (9)

1. excite, receive signal synchronizing system in a seismic prospecting; It is characterized in that it comprises first gps clock, excitation apparatus, second gps clock and receiving system; Described excitation apparatus is connected corresponding first gps clock and second gps clock respectively with receiving system; First gps clock and second gps clock all communicate with same satellite, receive synchronizing clock signals.
2. excite, receive signal synchronizing system in the seismic prospecting according to claim 1, it is characterized in that the pulse spacing of described first gps clock and the second gps clock signal all was 60 seconds, pulse duration is 20ms.
3. excite, receive signal synchronizing system in the seismic prospecting according to claim 1, it is characterized in that the clock accuracy of described first gps clock and second gps clock is 30ns.
4. excite, receive signal synchronizing system in the seismic prospecting according to claim 1, it is characterized in that described excitation apparatus is a blaster.
5. excite, receive signal synchronizing system in the seismic prospecting according to claim 1, it is characterized in that described receiving system is the digital seismics instrument, described digital seismics instrument is magnificent prosperous si2000.
6. excite, receive signal synchronizing system in the seismic prospecting according to claim 1, it is characterized in that described excitation apparatus is connected corresponding first gps clock and second gps clock through corresponding excitation apparatus interface circuit, receiving system interface circuit respectively with receiving system.
7. excite, receive signal synchronizing system in the seismic prospecting according to claim 6; It is characterized in that described receiving system interface circuit comprises switch and optical coupling isolator; The output of second gps clock connects the input of optical coupling isolator, and the output of optical coupling isolator connects the input of receiving system through switch.
8. excite in the seismic prospecting according to claim 6; Receive signal synchronizing system; It is characterized in that described excitation apparatus interface circuit comprises the clock processing frequency dividing circuit; The level translation drive circuit; Triode; Diode and transformer; The output of second gps clock connects the clock signal input terminal of clock processing frequency dividing circuit; The drive signal output of clock processing frequency dividing circuit connects the input of level translation drive circuit; The drive signal output of level translation drive circuit links to each other with the base stage of triode; The grounded emitter of triode; The collector electrode of triode and the positive pole of diode; One end of transformer links to each other; The other end of transformer all is connected power supply with the negative pole of diode, and the secondary coil output of transformer connects the input of excitation apparatus as the output of excitation apparatus interface circuit.
9. excite, receive signal synchronizing system in the seismic prospecting according to claim 8; It is characterized in that described excitation apparatus interface circuit also comprises stops the clock circuits for triggering; The signal input part that stops the clock circuits for triggering connects the period input module, and the output that stops the clock circuits for triggering connects the signal input end of clock processing frequency dividing circuit.
CN2011101926206A 2011-07-11 2011-07-11 Excitation and reception signal synchronizing system in seismic exploration Pending CN102355347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101926206A CN102355347A (en) 2011-07-11 2011-07-11 Excitation and reception signal synchronizing system in seismic exploration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101926206A CN102355347A (en) 2011-07-11 2011-07-11 Excitation and reception signal synchronizing system in seismic exploration

Publications (1)

Publication Number Publication Date
CN102355347A true CN102355347A (en) 2012-02-15

Family

ID=45578846

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101926206A Pending CN102355347A (en) 2011-07-11 2011-07-11 Excitation and reception signal synchronizing system in seismic exploration

Country Status (1)

Country Link
CN (1) CN102355347A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104237970A (en) * 2014-09-23 2014-12-24 中国石油天然气集团公司 Earthquake electromagnetism joint exploration system and data collecting devices and method thereof
CN104502548A (en) * 2015-01-13 2015-04-08 中国人民解放军总参谋部工程兵科研三所 Explosion effect wirelessly distributed synchronization testing method
CN104596359A (en) * 2015-01-13 2015-05-06 中国人民解放军总参谋部工程兵科研三所 Wireless detonator based on satellite time service and WIFI (wireless fidelity) communication
CN104639155A (en) * 2015-01-05 2015-05-20 山西晋明海科技开发有限公司 Converting device used by exploder to trigger seismometer for data acquisition
CN112859177A (en) * 2020-12-31 2021-05-28 中南大学 Control method and system for automatic acquisition by wide-area electromagnetic method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1417593A (en) * 2001-11-09 2003-05-14 中国石油集团地球物理勘探局 GPS satellite time service telemetering seismograph
CN1529452A (en) * 2003-09-28 2004-09-15 中兴通讯股份有限公司 Method for realizing GPS standard time
US20060013347A1 (en) * 2001-05-21 2006-01-19 Jim Brown Synchronizing a radio network with end user radio terminals
CN1960435A (en) * 2006-08-25 2007-05-09 中兴通讯股份有限公司 Method and system for synchronizing broadcast time of mobile multimedia
US20090231191A1 (en) * 2008-03-17 2009-09-17 Wi-Lan, Inc. Systems and methods for distributing GPS clock to communications devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060013347A1 (en) * 2001-05-21 2006-01-19 Jim Brown Synchronizing a radio network with end user radio terminals
CN1417593A (en) * 2001-11-09 2003-05-14 中国石油集团地球物理勘探局 GPS satellite time service telemetering seismograph
CN1529452A (en) * 2003-09-28 2004-09-15 中兴通讯股份有限公司 Method for realizing GPS standard time
CN1960435A (en) * 2006-08-25 2007-05-09 中兴通讯股份有限公司 Method and system for synchronizing broadcast time of mobile multimedia
US20090231191A1 (en) * 2008-03-17 2009-09-17 Wi-Lan, Inc. Systems and methods for distributing GPS clock to communications devices

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104237970A (en) * 2014-09-23 2014-12-24 中国石油天然气集团公司 Earthquake electromagnetism joint exploration system and data collecting devices and method thereof
CN104237970B (en) * 2014-09-23 2017-07-07 中国石油天然气集团公司 Electromagnetism of Earthquake joint exploration system and its data acquisition device and collecting method
CN104639155A (en) * 2015-01-05 2015-05-20 山西晋明海科技开发有限公司 Converting device used by exploder to trigger seismometer for data acquisition
CN104639155B (en) * 2015-01-05 2018-10-19 山西晋明海科技开发有限公司 A kind of conversion equipment for instrument gathered data of initiating earthquake for exploder
CN104502548A (en) * 2015-01-13 2015-04-08 中国人民解放军总参谋部工程兵科研三所 Explosion effect wirelessly distributed synchronization testing method
CN104596359A (en) * 2015-01-13 2015-05-06 中国人民解放军总参谋部工程兵科研三所 Wireless detonator based on satellite time service and WIFI (wireless fidelity) communication
CN104596359B (en) * 2015-01-13 2017-03-01 中国人民解放军总参谋部工程兵科研三所 Wireless initiator based on satellite time transfer and WIFI communication
CN112859177A (en) * 2020-12-31 2021-05-28 中南大学 Control method and system for automatic acquisition by wide-area electromagnetic method

Similar Documents

Publication Publication Date Title
CN102355347A (en) Excitation and reception signal synchronizing system in seismic exploration
CN104569965B (en) Method for synchronizing time and frequency of motor-driven configured bistatic radar
CN103605023B (en) A kind of combining unit time response measuring method and measurement apparatus
JP6482464B2 (en) Electronic device, communication system, and control method of electronic device
CN104330967A (en) Skin response based wireless time service spire lamella
CN104502548B (en) A kind of wireless distributed synchronous detecting method of explosion effect
CN103744284B (en) A kind of two ends time synchronized triggering system for power transmission line parameter measurement and method
CN104730919A (en) Beidou satellite timing system and method
CN104749636A (en) Distributed slot wave seismic prospecting system and prospecting method thereof
CN105044781A (en) System and method for generating synchronous transient electromagnetic signal source
CN202119918U (en) Signal transmitting and receiving synchronous system of seismic exploration
CN103441811B (en) A kind of AIS slot synchronization triggering system based on the UTC time
CN102142954B (en) Time synchronization method and equipment in rack
CN213585795U (en) Dual-mode NTP timer based on GPS/CDMA
CN102882624A (en) PXI/PCI bus-based remote synchronization device of test signal source devices and method thereof
CN106773985A (en) A kind of high accuracy sequence control unit and method for remote multiparty control
CN103595521A (en) Cross-well electromagnetic measurement time synchronizing system
CN205958949U (en) Be used for not having cable seismic detector synchronized clock source system
CN211878199U (en) Same-region earthquake acquisition excitation control device
CN203705656U (en) Seismic exploration instrument and VSP logging instrument common-source receiving system
CN204046621U (en) With the sampling clock synchronizer of Optical Fiber Transmission
CN110908272A (en) 1pps pulse signal timing method
CN101710845B (en) Method for carrying out unidirectional transmission time delay test by using GPS system
CN106125129A (en) A kind of low-consumption wireless microseism information carrying means and using method thereof
CN201278024Y (en) Encoder and decoder for seismic exploration

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120215