CN101608945B - PDVS real-time data processing system and processing method thereof - Google Patents
PDVS real-time data processing system and processing method thereof Download PDFInfo
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- CN101608945B CN101608945B CN2009100549658A CN200910054965A CN101608945B CN 101608945 B CN101608945 B CN 101608945B CN 2009100549658 A CN2009100549658 A CN 2009100549658A CN 200910054965 A CN200910054965 A CN 200910054965A CN 101608945 B CN101608945 B CN 101608945B
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Abstract
The invention relates to a real-time data processing system based on a distributed fiber-optic vibration sensor system with backscatter, comprising a pulse light source, wherein an output end of the pulse light source is connected with one end of a coupler; an output end of the synchronous signal of the pulse light source is connected with a synchronous controller; the other two ends of the coupler are respectively connected with an input end of a polarization splitter and a sensing optical cable; two output ends of the polarization splitter are respectively connected with two paths of a photoelectric detector; an output end of the photoelectric detector is connected with an input end of a data acquisition system which is synchronously controlled by a synchronous control module; an output end of the data acquisition system is connected with an input end of adata processing system; the other end of the data processing system is connected with a result output module; and the data processing system comprise a main processor and a co-processor which is connected with the main processor by PCI bus. The invention introduces the co-processor and a parallel processing structure to improve system data throughput as well as reduce channel data throughput, thus realizing real-time data processing.
Description
Technical field
The present invention relates to the optical fiber vibration sensing technology, relate in particular to a kind of Real-Time Data Handling System (RTDHS) and method of the distributed optical fiber vibration sensing system based on backscattering.
Background technology
Based on the distributed optical fiber vibration sensing technology (PDVS) of backscattering, be a kind of optical fiber sensing technology that can realize high position precision and high vibration performance discrimination simultaneously.Existing distributed optical fiber vibration sensing system based on this technology generally partly is made up of the narrow highpowerpulse light source of super-narrow line width, coupling mechanism, sensing optic cable, polarization splitter, photoelectric switching circuit and data handling system etc.
Please refer to shown in Figure 1, narrow linewidth light-pulse generator 1 is connected with an end of coupling mechanism 2, the synchronous output end of light-pulse generator 1 is connected with isochronous controller 8, the other two ends of coupling mechanism 2 are connected with the input end and the sensing optic cable of polarization splitter 3 respectively, two output terminals of polarization splitter 3 are connected with two-way photoelectric switching circuit 4 respectively, the output terminal of photoelectric commutator 4 is connected with the input end of data acquisition unit 5, data acquisition unit 5 is accepted the synchro control of isochronous controller 8, output terminal is connected with the input end of data processor 6, and the output terminal of data processor 6 is connected with output module 7 as a result.Data handling system in this system faces the problem of the following aspects, and at first, this system produces lot of data with the sampling system of 16bit, 50MSPS; Secondly, need carry out real-time Transmission to data; Once more, disposal system need realize multiple complicated algorithm, and needs to handle in real time.And existing data processing system does not possess the ability of high-transmission bandwidth real-time Transmission and in real time extensive computing.
Given this, being necessary to design a kind of new Real-Time Data Handling System (RTDHS) is used to solve the problems of the technologies described above.
Summary of the invention
Technical matters to be solved by this invention provides a kind of Real-Time Data Handling System (RTDHS) and method thereof of the distributed optical fiber vibration sensing system based on backscattering, introduce coprocessor and parallel processing structure, be used to improve system data throughput, reduce the data throughout of passage, thereby realize the real-time processing of data.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of PDVS Real-Time Data Handling System (RTDHS), it comprises light-pulse generator, the output terminal of light-pulse generator is connected with an end of coupling mechanism, the synchronous signal output end of light-pulse generator links to each other with isochronous controller, the other two ends of coupling mechanism respectively with the input end of polarization splitter, sensing optic cable connects, two output terminals of polarization splitter are connected with the two-way photodetector respectively, the output terminal of described photodetector is connected with the input end of data acquisition system (DAS), described data acquisition system (DAS) is accepted the synchronization control module synchro control, the output terminal of data acquisition system (DAS) is connected with the input end of data handling system, the other end of data handling system is connected with output module as a result, and described data handling system comprises primary processor and the coprocessor that links to each other by pci bus with primary processor.
Described data acquisition system (DAS) comprises two parallel PCI capture cards, each PCI capture card output terminal links to each other with the input end of primary processor by pci bus respectively, the other end of described each primary processor is connected with coprocessor respectively by pci bus, and two primary processors connect by Ethernet or RS232.
The invention still further relates to a kind of PDVS real-time data processing method, may further comprise the steps:
1) data acquisition system (DAS) is distinguished image data under the synchro control of synchronizing signal;
2) upload on the primary processor via pci bus then, data are carried out pre-service, and will need the part of complex calculation to be assigned to coprocessor by it;
3) coprocessor turns back to the data of handling well on the primary processor before receiving new data again, carries out a series of processing computing according to result on the primary processor then;
4) finally by Ethernet or RS232 with the result transmission of a primary processor to another primary processor, thereby finish two-way result's data fusion.
The present invention has improved system data throughput by introducing coprocessor and parallel processing structure, has reduced the data throughout of passage, thereby realizes the real-time processing of data.
Description of drawings
Fig. 1 is an existing distributed optical fiber vibration sensing system block diagram;
Fig. 2 is a data handling system block diagram of the present invention.
Embodiment
As shown in Figure 2, the present invention relates to a kind of PDVS Real-Time Data Handling System (RTDHS), it comprises light-pulse generator D1, this light source is the narrow highpowerpulse light source of super-narrow line width, the end of described light-pulse generator D1 is connected with the end of coupling mechanism D2, the synchronous output end of light-pulse generator D1 links to each other with synchronous and control module, the other two ends of coupling mechanism D2 respectively with the input end of polarization splitter D5, sensing optic cable D3 connects, polarization splitter D5 is divided into two-way with Rayleigh scattering light, two photodetector D6, D7 respectively with a road being connected wherein, the output terminal of described photodetector D6 and D7 is connected with the input end of data acquisition system (DAS), the synchronous input end of described data acquisition system (DAS) links to each other with synchronous and control module, described data acquisition system (DAS) is accepted the synchronization control module synchro control, the output terminal of data acquisition system (DAS) is connected with the input end of data handling system, the other end of data handling system is connected with output module as a result, described data handling system comprise primary processor and with primary processor D10, the coprocessor D12 that D11 links to each other by pci bus, D13.
Described data acquisition system (DAS) comprises two parallel PCI capture card D8, D9, each PCI capture card output terminal passes through separately independently respectively, and pci bus links to each other with primary processor, described each primary processor connects with corresponding coprocessor respectively by pci bus separately, and two primary processors connect by Ethernet or RS232.
PCI capture card D8 analog input end links to each other with photodetector D6, and PCI capture card D8 is connected with primary processor D10 by pci bus, and coprocessor D12 is connected with primary processor D10 by pci bus.
PCI capture card D9 analog input end links to each other with photodetector D7, and PCI capture card D9 is connected with the end of primary processor D11 by pci bus, and coprocessor D13 is connected with primary processor D11 by pci bus.Two primary processor D10, D11 connect by Ethernet or RS232.
Described primary processor is through passing through the result of output module D14 output as a result after the data fusion.
Concrete, two capture cards (D8, D9) are down synchronous the 1kHz synchronizing signal, produce the data of about 60KB respectively, upload on the high-performance industrial master board (D10, D11) via pci bus then, by it data are carried out pre-service, and the part that will need complex calculation is assigned to coprocessor (D12, D13), and coprocessor turns back to the data of handling well on the industrial master board before receiving new data again, and CPU (D10, D11) carries out a series of processing computing according to result then.Final Ethernet of passing through or RS232 arrive the result transmission of primary processor 2 (D11) on the primary processor 1 (D10), and primary processor 1 is responsible for finishing two-way result's data fusion.In addition, by configuration, also can replace primary processor 1 to realize the function of data fusion by primary processor 2.
Advantage of the present invention is as follows:
1) introducing of coprocessor has improved system data throughput greatly;
2) introducing of parallel processing structure has reduced the data throughout of every passage;
3) introducing of data fusion link has realized the unification that system data is handled.
This system has made full use of the program general purpose computer flexible characteristic on the basis that makes full use of the maximum 132MB/S transmission bandwidth of PCI, guaranteed the real-time processing of system to data on the one hand, on the other hand greatly reduce the hardware and software development difficulty.
The device that relates among the present invention is a conventional products, belongs to the category that those skilled in the art are familiar with, and does not repeat them here.
Above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (3)
1. Real-Time Data Handling System (RTDHS) based on the distributed optical fiber vibration sensing system of backscattering, it comprises light-pulse generator, the output terminal of light-pulse generator is connected with an end of coupling mechanism, the synchronous signal output end of light-pulse generator links to each other with isochronous controller, the other two ends of coupling mechanism respectively with the input end of polarization splitter, sensing optic cable connects, two output terminals of polarization splitter are connected with the two-way photodetector respectively, the output terminal of described photodetector is connected with the input end of data acquisition system (DAS), described data acquisition system (DAS) is accepted the synchronization control module synchro control, the output terminal of data acquisition system (DAS) is connected with the input end of data handling system, the other end of data handling system is connected with output module as a result, it is characterized in that: described data handling system comprises primary processor and the coprocessor that links to each other by pci bus with primary processor.
2. the Real-Time Data Handling System (RTDHS) of a kind of distributed optical fiber vibration sensing system based on backscattering as claimed in claim 1, it is characterized in that: described data acquisition system (DAS) comprises two parallel PCI capture cards, each PCI capture card output terminal links to each other by the input end of pci bus with a primary processor of two primary processors respectively, the other end of described each primary processor is connected with a coprocessor in two coprocessors by pci bus respectively, and two primary processors connect by Ethernet or RS232.
3. a method of utilizing the Real-Time Data Handling System (RTDHS) of the described distributed optical fiber vibration sensing system based on backscattering of claim 2 is characterized in that, may further comprise the steps:
1) data acquisition system (DAS) is distinguished image data under the synchro control of synchronizing signal;
2) upload on the primary processor via pci bus then, data are carried out pre-service, and will need the part of complex calculation to be assigned to coprocessor by it;
3) coprocessor turns back to the data of handling well on the primary processor before receiving new data again, carries out a series of processing computing according to result on the primary processor then;
4) finally by Ethernet or RS232 with the result transmission of a primary processor to another primary processor, thereby finish two-way result's data fusion.
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| CN1245284A (en) * | 1999-08-20 | 2000-02-23 | 清华大学 | Instrument for measuring shift and vibration of object by polarized light interference of optical fibre |
| CN1821727A (en) * | 2006-03-22 | 2006-08-23 | 中国科学院上海光学精密机械研究所 | Fibre-optical acoustic sensor |
| CN2890861Y (en) * | 2006-03-22 | 2007-04-18 | 中国科学院上海光学精密机械研究所 | Fiber acoustic sensor |
| CN1995934A (en) * | 2006-11-15 | 2007-07-11 | 北京航空航天大学 | Distribution type fiber-optic vibration sensor |
| CN101290245A (en) * | 2008-06-19 | 2008-10-22 | 电子科技大学 | All-sensing interference -type light time domain reflectometer |
| CN101290235A (en) * | 2008-06-19 | 2008-10-22 | 电子科技大学 | Interference -type light time domain reflectometer |
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2009
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Patent Citations (6)
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|---|---|---|---|---|
| CN1245284A (en) * | 1999-08-20 | 2000-02-23 | 清华大学 | Instrument for measuring shift and vibration of object by polarized light interference of optical fibre |
| CN1821727A (en) * | 2006-03-22 | 2006-08-23 | 中国科学院上海光学精密机械研究所 | Fibre-optical acoustic sensor |
| CN2890861Y (en) * | 2006-03-22 | 2007-04-18 | 中国科学院上海光学精密机械研究所 | Fiber acoustic sensor |
| CN1995934A (en) * | 2006-11-15 | 2007-07-11 | 北京航空航天大学 | Distribution type fiber-optic vibration sensor |
| CN101290245A (en) * | 2008-06-19 | 2008-10-22 | 电子科技大学 | All-sensing interference -type light time domain reflectometer |
| CN101290235A (en) * | 2008-06-19 | 2008-10-22 | 电子科技大学 | Interference -type light time domain reflectometer |
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| JP特开2001-41817A 2001.02.16 |
| JP特开2006-208080A 2006.08.10 |
| 郑亚娟等.基于OTDR技术的光纤式输油管道安全预警系统.《化工自动化及仪表》.2008,第35卷(第2期),全文. * |
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Owner name: STATE GRID LIAONING ELECTRIC POWER CO., LTD. BENXI Effective date: 20140527 |
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Effective date of registration: 20140527 Address after: Qingpu District of Shanghai city in 201711 Zhao Tun Zhen Zhao road 31 Lane 2, Yunfeng building 701 room B Patentee after: Shanghai Boom Fiber Sensing Technology Co., Ltd. Patentee after: Benxi Power Supply Company of State Grid Liaoning Electric Power Co., Ltd. Address before: Qingpu District of Shanghai city in 201711 Zhao Tun Zhen Zhao road 31 Lane 2, Yunfeng building 701 room B Patentee before: Shanghai Boom Fiber Sensing Technology Co., Ltd. |
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