CN102967784B - Fault detection method and device for digital unit on offshore earthquake exploration cable - Google Patents
Fault detection method and device for digital unit on offshore earthquake exploration cable Download PDFInfo
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- CN102967784B CN102967784B CN201210488516.6A CN201210488516A CN102967784B CN 102967784 B CN102967784 B CN 102967784B CN 201210488516 A CN201210488516 A CN 201210488516A CN 102967784 B CN102967784 B CN 102967784B
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Abstract
The invention discloses a fault detection method and device for a digital unit on an offshore earthquake exploration cable. The defect in the prior art that the detection efficiency is low when the digital unit on the offshore earthquake exploration cable fails is overcome. The offshore earthquake exploration cable comprises two data lines, wherein each data line comprises a plurality of digital units. The method comprises the following steps of: determining fault digital units (FDU) having the possibility of faults through a cable testing system; replacing the FDU through a detection device and connecting the detection device to a data line in which the FDUs are positioned according to a sequence of the FDUs on the data line; and determining the FDUs. According to the method and the device, the fault digital units are directly crossed in the cable maintenance process, and data of the rear FDUs are read.
Description
Technical field
The present invention relates to a kind of fault detection method, relate in particular to fault detection method and the device of digital units on a kind of offshore seismic exploration cable.
Background technology
Offshore seismic exploration (SEAL) cable is the electronic equipment for acquiring seismic data, its every section working cable (ALS) as shown in Figure 1, comprise two groups of data lines (Line1 and Line2 illustrate with Line1 (LL) and Line2 (HL) in figure) and 6 digital units (FDU).Wherein first and third, five FDU form Line2 according to data transfer direction series connection, second, four, six FDU form Line1 according to data transfer direction series connection.Every section of ALS comprises 12 working paths, 12.5 meters of per pass, and each FDU controls 2 roads.The sequence number of ALS and the identification number of FDU are all stored in FDU electronic memory, allow to carry out management cable by Cable Testing System.
For any one group of data line, once certain FDU on it breaks down, FDU thereafter cannot work, and system, also with regard to None-identified, can cause whole piece seismic prospecting cable to work, and then impact is produced.
FDU breaks down, and can only find the digital units that produces fault by cable maintenance personnel in the past, then keeps in repair by replacing method.This maintenance mode not only working strength is large, and inefficiency, has a strong impact on work production.
SEAL system is for to manage respectively Line2 and Line1 by 1, No. 2 FDU, if No. 1 or No. 2 FDU produce faults, the FDU position that can only arbitrary FDU below be substituted to fault by replacing method, keeps in repair by the mode of replacing.This maintenance mode operation is loaded down with trivial details, expend a large amount of idle works.
Summary of the invention
Technical matters to be solved by this invention is to overcome on current offshore seismic exploration cable the low deficiency of detection efficiency when digital units breaks down.
In order to solve the problems of the technologies described above, the invention provides the fault detection method of digital units on a kind of offshore seismic exploration cable, described offshore seismic exploration cable comprises two data lines, includes multiple digital units on every data line; Wherein, the method comprises:
Determine the digital units (FDU) that may produce fault by Cable Testing System;
Order according to FDU on affiliated data line, replaces the described FDU that may produce fault to be linked on the data line at the described FDU place that may produce fault a pick-up unit one by one, determines the FDU that has produced fault;
Wherein, described pick-up unit comprises body, draws and for being connected to cable front connector on described Cable Testing System and data line front connector and joint after joint and data line after described body is drawn the cable replacing on the described described FDU place data line that may produce fault of FDU access that may produce fault from described body.
Preferably, the method comprises:
Described definite FDU that has produced fault is changed.
Preferably, the method comprises:
The data that are arranged in first FDU on the data line at described definite FDU place that has produced fault are written to the FDU after the above pick-up unit of data line.
The application's embodiment also provides the failure detector of digital units on a kind of offshore seismic exploration cable, and described offshore seismic exploration cable comprises two data lines, includes multiple digital units (FDU) on every data line; Wherein, this device comprises:
Body;
Draw and for being connected to cable front connector and the data line front connector on Cable Testing System from described body;
Draw and for accessing after the cable on the FDU place data line that may produce fault joint after joint and data line from described body.
Preferably, this device comprises:
Read data module, is set to reading out data in first FDU from the described FDU place data line that may produce fault;
Write data module, the data that are set to that described read data module is read are written to the FDU being arranged on the described FDU place data line that may produce fault after the described FDU that may produce fault.
Preferably, described read data module is set to be connected with joint after described data line front connector and data line in the time that described data read; Write data module is set to joint after described data are write fashionable and described data line front connector and data line and is connected.
Compared with prior art, the application's embodiment, in cable maintenance process, directly strides across the digital units breaking down, and the FDU at its rear portion is carried out to reading out data, to confirm that can FDU thereafter normally work, and proceeds malfunction elimination.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in instructions, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and forms a part for instructions, is used from and explains technical scheme of the present invention with the application's embodiment mono-, does not form the restriction to technical solution of the present invention.
Fig. 1 is the structural representation of working cable.
Fig. 2 is the schematic flow sheet of the fault detection method of digital units on the offshore seismic exploration cable of the embodiment of the present application.
Fig. 3 is the organigram of the failure detector of the embodiment of the present application.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.Each feature in the embodiment of the present application and embodiment is the mutually combining under prerequisite of not conflicting mutually, all within protection scope of the present invention.
The application's embodiment adopts data-switching switching device to be connected on two groups of data lines, for selectivity, the pick-up unit of the embodiment of the present application is linked into two groups of data lines wherein on one.Adopt data-switching switching device, the Data Elements on Line1 and these two groups of data lines of Line2 are carried out interrelatedly in data transmission procedure, greatly reduce cost, improved cable maintenance work efficiency.
As shown in Figure 2, on the offshore seismic exploration cable of the embodiment of the present application, the fault detection method of digital units mainly comprises following content.
S10, determines the FDU that may produce fault by Cable Testing System.
S20, the order according to FDU on data line, replace the described FDU that may produce fault to be linked on the data line at the described FDU place that may produce fault a pick-up unit one by one, determines and produced fault.
S30, the FDU that has produced fault to determining changes.
Wherein, above-mentioned failure detector as shown in Figure 3, mainly comprise body 310, draw and for being connected to cable front connector 320 and the data line front connector 330 on Cable Testing System from body 310, and after the FDU that fault was drawn and may be produced for replacing to body 310 accesses the cable on this FDU place data line joint 350 after joint 340 and data line.
As shown in Figure 3, on the offshore seismic exploration cable of the embodiment of the present application, the failure detector of digital units also comprises read data module 360 and writes data module 370.
Read data module 360, in data read process, is connected with joint 350 after data line front connector 330 and data line, reading out data in first FDU from the described FDU place data line that may produce fault.
Write data module 370, in data writing process, be connected with joint 350 after data line front connector 330 and data line, the data that described read data module 360 is read are written to the FDU being arranged on the described FDU place data line that may produce fault after the described FDU that may produce fault.
Shown in Fig. 3 is the annexation of joint 350 signal after data line front connector 330 and data line in data read process.
In data read process, cable front connector 320 stube cable test macros, joint 340 stube cables after cable, data line front connector 330 connects read data module 360 front ends, and after data line, joint 350 connects read data module 360 rear ends.
In data writing process, cable front connector 320 stube cable test macros, joint 340 stube cables after cable, data line front connector 330 connects writes data module 370 front ends, and after data line, joint 350 connects and writes data module 370 rear ends.
In the application's embodiment, can be by stride across the FDU that fault has occurred with this pick-up unit, test judges whether all the other FDU exist fault.
In the application's a embodiment, there is fault in the FDU3 (No. 3 FDU) on Line2.In prior unwitting situation, first will detect that by test system and test cable system the upper FDU1 (No. 1 FDU) of Line2 gathers the data of wave detector and the data of Line1 upper FDU2, FDU4 and FDU6 (No. 2, No. 4 and No. 6 FDU) collection wave detector, and the countless certificates of No. 3 and No. 5 FDU on Line2 now cannot be confirmed the quality of No. 5 FDU.
Replace upper No. 3 FDU of Line2 to be linked in data line above-mentioned pick-up unit, confirm the quality of No. 5 FDU.This is that FDU below affects the data acquisition of FDU above in data transmission procedure, so need to confirm the quality of No. 5 FDU because be series relationship between the FDU on same data line.Prior art can only be by No. 3 FDU to 5 FDU infer fault successively.By confirming that No. 5 FDU are good, just can directly judge that No. 3 FDU produce fault and need to change.
In another embodiment of the application, all there is fault in the FDU3 on Line2 and FDU5.Test macro can't detect the data of No. 3 and No. 5 FDU on Line2, now also cannot confirm the quality of No. 5 FDU.
Replace upper No. 3 FDU of Line2 to be linked in data line above-mentioned pick-up unit, confirm the quality of No. 5 FDU.If No. 5 FDU produces fault, disconnect the series circuit of No. 3 and No. 5 FDU, above-mentioned detection device is acted on behalf of to No. 5 on Line2, detect No. 3 FDU and whether produce fault.If No. 3 FDU also produce fault, at needs, No. 3 and No. 5 FDU are changed.
In the application's embodiment, EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) chip on the printed circuit board (PCB) (PCB) of FDU damages or leaves for a certain reason data generation data perturbation wherein in, just can use above-mentioned detection device to read directly to carry out data to write (data that write mainly comprise cable number, type of cable, FDU present position, sequence number, institute's use wave detector type, the road number of managing, digital units type, low cut-off frequency filter frequencies, track pitch, detector data and checking parameter etc.).The data that write are to be replaced on first FDU on the data line that the FDU breaking down is linked into and copied acquisition by this pick-up unit, and are written to the FDU being arranged on data line after this pick-up unit.
The application's embodiment is according to the difference of Method of Cable Trouble Point, and the access cable of can connecting arbitrarily in the head of working cable, afterbody or 6 FDU positions forms several data loop and carry out the investigation of cable fault.
Produce fault for FDU1, carry out two-route wire interrelated (using on the FDU6 cross-over connection FDU1 position on Line1 line) and carry out fault verification.
In the application's embodiment, as shown in Figure 1,6 FDU are inner for being arranged in order at cable.Long 150 meters of cable, cable maintenance worktable is 80 meters.When maintenance, cable doubling is placed on worktable.If in Line2, No. 1 FDU breaks down in cable maintenance, in available Line1, No. 6 other being connected in Line2 of FDU are carried out test procedure on No. 1 FDU position, related data is write new FDU by pick-up unit in cable trailer access the embodiment of the present application, and by be designated No. 7 of new FDU.After data Replica (aforesaid writing) completes, then this new FDU is changed to No. 1 FDU in Line2.Reset test procedure the data in 6 FDU are refreshed, reaffirm that two paths of data is interrelated, test macro confirms to write the identification number (writing successively the identification number of 1,2,3,4,5, No. 6 FDU) of each FDU.When cable work, two paths of data transmission is what to manage with the identification number of FDU.
It is all from FDU1 that test macro reads and writes data each time, and FDU2 order starts, and finishes in FDU5, FDU6.The application's embodiment can be by FDU1 by use pick-up unit, FDU2 people is for being placed in cable optional position, (such as first FDU3 and FDU4 being started respectively to the FDU reading and writing on two data lines, or also first FDU5 and FDU6 can be started respectively on two data lines to the FDU of read-write) by being set, trap data cheats Cable Testing System, thus reach the object of the cable number of read-write ALS (working cable) and the identification number of FDU.
The application's embodiment can reduce the working strength that malfunction elimination is maintenance, improves operating efficiency, and a line that provides powerful support for seismic prospecting is produced.
The application's embodiment utilizes pick-up unit to access on two groups of data line LINE1 and LINE2 and acts on behalf of digital units FDU, and the data that are arranged on the eeprom chip on PCB in FDU are read and write.The data of reading and writing mainly comprise: cable number, type of cable, FDU present position, sequence number, institute's use wave detector type, the road number of managing, digital units type, low cut-off frequency filter frequencies, track pitch, detector data and checking parameter etc.
Although the disclosed embodiment of the present invention as above, the embodiment that described content only adopts for ease of understanding the present invention, not in order to limit the present invention.Those of skill in the art under any the present invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can in the form of implementing and details, carry out any amendment and variation; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (4)
1. a fault detection method for digital units on offshore seismic exploration cable, described offshore seismic exploration cable comprises two data lines, includes multiple digital units on every data line; Wherein, the method comprises:
Determine the digital units (FDU) that may produce fault by Cable Testing System;
Order according to FDU on affiliated data line, replaces the described FDU that may produce fault to be linked on the data line at the described FDU place that may produce fault a pick-up unit one by one, determines the FDU that has produced fault;
Wherein, described pick-up unit comprises body, draws and for being connected to cable front connector on described Cable Testing System and data line front connector and joint after joint and data line after described body is drawn the cable replacing on the described described FDU place data line that may produce fault of FDU access that may produce fault from described body;
The data that are arranged in first FDU on the data line at described definite FDU place that has produced fault are written to the FDU after the above pick-up unit of data line.
2. method according to claim 1, wherein, the method comprises:
Described definite FDU that has produced fault is changed.
3. a failure detector for digital units on offshore seismic exploration cable, described offshore seismic exploration cable comprises two data lines, includes multiple digital units (FDU) on every data line; Wherein, this device comprises:
Body;
Draw and for being connected to cable front connector and the data line front connector on Cable Testing System from described body;
Draw and for accessing after the cable on the FDU place data line that may produce fault joint after joint and data line from described body;
This device comprises:
Read data module, is set to reading out data in first FDU from the described FDU place data line that may produce fault;
Write data module, the data that are set to that described read data module is read are written to the FDU being arranged on the described FDU place data line that may produce fault after the described FDU that may produce fault.
4. device according to claim 3, wherein:
Described read data module is set to be connected with joint after described data line front connector and data line in the time that described data read;
Write data module is set to joint after described data are write fashionable and described data line front connector and data line and is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210488516.6A CN102967784B (en) | 2012-11-26 | 2012-11-26 | Fault detection method and device for digital unit on offshore earthquake exploration cable |
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| CN201210488516.6A CN102967784B (en) | 2012-11-26 | 2012-11-26 | Fault detection method and device for digital unit on offshore earthquake exploration cable |
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| CN102967784B true CN102967784B (en) | 2014-12-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103399360B (en) * | 2013-07-23 | 2016-05-11 | 中国海洋石油总公司 | A kind of cable Seismic Detector device |
| CN110007370B (en) * | 2019-04-13 | 2021-02-05 | 胜利油田新胜石油物探技术服务有限责任公司 | Universal detector testing system and control method thereof |
| CN111487693B (en) * | 2020-04-23 | 2021-10-01 | 中国科学技术大学 | Method for manufacturing resistive well type detector for digital hadron energy meter |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |