CN104601222A - Petroleum pipeline cable inquiry unit - Google Patents
Petroleum pipeline cable inquiry unit Download PDFInfo
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- CN104601222A CN104601222A CN201510005972.4A CN201510005972A CN104601222A CN 104601222 A CN104601222 A CN 104601222A CN 201510005972 A CN201510005972 A CN 201510005972A CN 104601222 A CN104601222 A CN 104601222A
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Abstract
The invention provides a petroleum pipeline cable inquiry unit. The petroleum pipeline cable inquiry unit comprises a light source module, a reflecting module, photoelectric detecting equipment and a signal processing module, wherein the light source module is used for inputting coherent light to a first end of a communication cable; the reflecting module is connected with the light source module through a second end of the communication cable, and used for reflecting the coherent light; the photoelectric detecting equipment is connected with the first end of the communication cable and used for receiving the coherent light signal and converting the coherent light signal into an electric signal; the signal processing module is connected with the photoelectric detecting equipment and used for demodulating the reflected light signal. The petroleum pipeline cable inquiry unit can be used for demodulating an interference signal returned by a michelson interferometer consisting of the equipment and the communication cable according to the laser interference principle and the elasto-optical effect, extracting out vibration information, realizing checking cable router, and giving visual display or audio output.
Description
Technical field
The present invention relates to a kind of oil pipeline optical cable inquiry unit, particularly relate to a kind of oil pipeline optical cable inquiry unit based on Michelson's interferometer.
Background technology
Monomode fiber, as the basic module of communications optical cable, has extremely low attenuation coefficient and cheap price advantage, is therefore widely used in the communications field.Under normal conditions, communications optical cable is normal with laying oil pipeline.When improving data or keep in repair after communications optical cable is completed, usually need the resource inspection carrying out optical cable, namely search the route of optical cable.And optical cable is at the scene usually bunchy distribution, numerous optical cable mixes.To accurately find out required optical cable in optical cable upon mixing and there is very large difficulty.And the maintenance time of communications optical cable is of great value, because the communications optical cable long inconvenience caused maintenance time and loss are very large.Keep in repair necessary Optical Cable as communications optical cable, more play a significant role in saving time.
Current Optical Cable is generally realized by the rice mark of OTDR equipment and optical cable self.Wherein, OTDR equipment is used for the length of line condition in test optical fibre cables optical fiber and optical fiber.Can be observed with or without breakpoint and obvious loss point in optical fiber by OTDR equipment, and determine the optical length of this core fibre.And the length of institute's light-metering fibre is generally 1.005 times of optical cable physical length.The rice mark of the optical cable of wanted route can be calculated according to completion information along the line.Check the rice mark information of numerous optical cable again according to this information, just can find out required optical cable, and carry out next step maintenance of the perfect of completion information or optical cable.
Existing optical cable census method needs to be equipped with complete completion information, and not available for the optical cable construction of this mode just under some advance works or particular surroundings.Owing to needing the test result in conjunction with OTDR equipment and verifying required optical cable by the rice mark of optical cable self, so it is complete to need the rice mark on optical cable surface to retain, can not heavy wear, but in the communications optical cable of pipeline construction, the situation of rice mark wearing and tearing is very common.In this case, cause difficulty will to the route of optical cable, thus delay the maintenance time of optical cable, cause unnecessary economic loss.
Summary of the invention
The object of this invention is to provide a kind of oil pipeline optical cable inquiry unit, in order to solve the complete type of completion information and to the not convenient technical problem such as requirement of optical cable rice mark integrality.
Technical scheme of the present invention is to provide a kind of oil pipeline optical cable inquiry unit, comprising:
Light source module, for the first end input coherent light to communications optical cable;
Reflecting module, is connected with second end of described light source module by communications optical cable, for reflecting described coherent light;
Photoelectric detection equipment, is connected with the first end of described communications optical cable, for receiving described interference light signal and described interference light signal being converted to the signal of telecommunication;
Signal processing module, is connected with described photoelectric detection equipment, for carrying out demodulation process to the described signal of telecommunication.
In an embodiment of the present invention, also comprise:
Display module, is connected with described signal processing module, for being exported by described Query Result.
In an embodiment of the present invention, described display module exports in the mode of Audio and Video.
In an embodiment of the present invention, also comprise:
Pre-amplification circuit, between described photoelectric detection equipment and described signal processing module, for amplifying and filtering process the described signal of telecommunication.
In an embodiment of the present invention, also comprise:
Described communications optical cable carries out being connected and fixing with described light source module and described reflecting module with wire jumper by flange.
In an embodiment of the present invention, described pre-amplification circuit comprises: A/D chip, fpga chip and D/A chip, described A/D chip is connected on described fpga chip, described fpga chip is connected on D/A chip, for analog signal is converted to digital signal, and described digital signal is converted to analog signal by described D/A chip.
Can according to laser interference principle and elasto-optical effect by the present invention, the interference signal returned by the Michelson's interferometer jointly formed this equipment and communications optical cable carries out demodulation process, extract vibration information, realize searching Optical Cable, and display intuitively or audio frequency output can be provided.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, 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 prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the structured flowchart of the optical cable inquiry unit that the present invention is based on Michelson's interferometer;
Fig. 2 is the structured flowchart of signal processing circuit in one embodiment of the invention;
Fig. 3 is the flow chart of the optical cable querying method that the present invention is based on Michelson's interferometer.
Fig. 4 is the oscillogram of optical cable request signal display in one embodiment of the invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
The invention provides a kind of oil pipeline optical cable inquiry unit, comprising:
Light source module 10, for the first end input coherent light to communications optical cable 40;
Reflecting module 50, is connected with second end of described light source module 10 by communications optical cable 40, for reflecting described coherent light;
Photoelectric detection equipment 61, is connected with the first end of described communications optical cable 40, for receiving described interference light signal and described interference light signal being converted to the signal of telecommunication;
Signal processing module 60, is connected with described photoelectric detection equipment 61, for carrying out demodulation process to the described signal of telecommunication of reflection.
In an embodiment of the present invention, also comprise:
Display module 70, is connected with described signal processing module 60, for being exported by described Query Result.
In an embodiment of the present invention, described display module 70 exports in the mode of Audio and Video.
In an embodiment of the present invention, also comprise:
Pre-amplification circuit 62, between described photoelectric detection equipment 61 and described signal processing module 60, for amplifying and filtering process the described signal of telecommunication.
In an embodiment of the present invention, also comprise:
Described communications optical cable 40 carries out being connected and fixing with described light source module 10 and described reflecting module 50 with wire jumper by flange.
In an embodiment of the present invention, described pre-amplification circuit comprises: A/D chip 630, fpga chip 631 and D/A chip 632, described A/D chip 630 is connected on described fpga chip 631, described fpga chip is connected on D/A chip, for analog signal is converted to digital signal, and described digital signal is converted to analog signal by described D/A chip 632.
By oil pipeline optical cable inquiry unit provided by the invention, can according to laser interference principle and elasto-optical effect, the interference signal returned by the Michelson's interferometer jointly formed this equipment and communications optical cable carries out demodulation process, extract vibration information, realize searching Optical Cable, and display intuitively or audio frequency output can be provided.
Below in conjunction with a specific embodiment, the present invention is specifically described, but it should be noted that this specific embodiment is only to describe the present invention better, do not form inappropriate limitation of the present invention.
Embodiment 1
Fig. 1 is an embodiment of the optical cable inquiry unit based on Michelson's interferometer.This optical cable inquiry unit comprises: light source module 10, the narrow linewidth light sent by light source module 10 after point Light coupling devices 12 is divided into the two bundle coherent lights of 50:50, and from one end input of the communications optical cable 40 distributing frame of on-the-spot (or far-end), wherein, one end of communications optical cable 40 is connected with light source module 10 with flange 30 respectively by wire jumper 20, and at the other end of communications optical cable 40 by flange 30, wire jumper 20, be connected with the reflection unit 52 in reflecting module 50, they and reflection unit 52 form Michelson's interferometer jointly.
Photoelectric detection equipment 61 receives the interference light signal that reflecting module 50 is reflected back, and interference light signal is converted to the signal of telecommunication, and pre-amplification circuit 62 amplifies and filtering process the signal of telecommunication after conversion.Then, this signal is resolved by signal processing circuit 63, and by the result after resolving with the mode display translation of Audio and Video to display module 7.
Fig. 2 is the structured flowchart of signal processing circuit in one embodiment of the invention.Pre-amplification circuit 62 is connected on the corresponding pin of fpga chip 631, fpga chip is connected on D/A chip, for the analog signal received is converted to digital signal after A/D chip 630, in fpga chip 631, its energy information is asked for received signal, the result of calculating is converted to analog signal by D/A chip 632, then passes through connected display module 70 and show.
In the present embodiment, the FPGA631 in this circuit also can change the digit chip such as DSP or single-chip microcomputer into, and its control action is identical.
In the present embodiment, described signal transacting and display circuit also can be realized by capture card and computer or single board computer and display, and its effect is identical.
Fig. 3 is the flow chart of the optical cable querying method that the present invention is based on Michelson's interferometer, comprising:
S301: to the first end input coherent light of communications optical cable 40;
S302: described coherent light forms Michelson interference light signal by reflecting module 50;
S303: receive described interference light signal;
S304: demodulation process is carried out to described interference light signal.
In an embodiment of the present invention,
If described interference light signal exports as regular wave form output on basic waveform basis, then can judge that described communications optical cable is as target optical cable;
Wave form output based on if described interference light signal exports, then described communications optical cable is not target light signal.
For the purpose of calculating simply, describe the problem intuitively, we are described for knocking for outer signals source, and be worth prompting at this, for the signal source of various amplitude, interference signal output waveform is also different, as shown in Figure 4:
Because transducer is for the interference signal of various amplitude, the waveform of the interference light intensity of output is not identical, and as shown in Figure 4, in Fig. 4, to be outer signals be respectively knocks, drive piles, roll, output waveform when excavating for four kinds of waveforms.
If the output signal that can receive correct outer signals source waveform feature in testing process just illustrates it is correct, namely input and output side is same optical cable; If not same optical cable, then do not have the output signal of corresponding signal source signature waveform.
Tool of the present invention has the following advantages:
1). structure is simple, and cost is low, easy to operate, only needs vibration optical cable just can realize optical cable generaI investigation function, can save the plenty of time;
2). be applicable to the occasion of optical cable rice mark serious wear, still accurately can find the route of optical cable in this case, therefore without the need to complete construction handbook, and without the need to manually calculating Distance geometry on-the-spot testing rice mark;
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an oil pipeline optical cable inquiry unit, is characterized in that, comprising:
Light source module, for the first end input coherent light to communications optical cable;
Reflecting module, is connected with second end of described light source module by communications optical cable, for reflecting described coherent light;
Photoelectric detection equipment, is connected with the first end of described communications optical cable, for receiving described interference light signal and described interference light signal being converted to the signal of telecommunication;
Signal processing module, is connected with described photoelectric detection equipment, for carrying out demodulation process to the described signal of telecommunication.
2. oil pipeline optical cable inquiry unit according to claim 1, is characterized in that, also comprise:
Display module, is connected with described signal processing module, for being exported by described Query Result.
3. oil pipeline optical cable inquiry unit according to claim 2, it is characterized in that, described display module exports in the mode of Audio and Video.
4. oil pipeline optical cable inquiry unit according to claim 1, is characterized in that, also comprise:
Pre-amplification circuit, between described photoelectric detection equipment and described signal processing circuit, for amplifying and filtering process the described signal of telecommunication.
5. oil pipeline optical cable inquiry unit according to claim 1, is characterized in that, also comprise:
Described communications optical cable carries out being connected and fixing with described light source module and described reflecting module with wire jumper by flange.
6. oil pipeline optical cable inquiry unit according to claim 4, it is characterized in that, described pre-amplification circuit comprises: A/D chip, fpga chip and D/A chip, described A/D chip is connected on described fpga chip, described fpga chip is connected on D/A chip, for analog signal is converted to digital signal, and described digital signal is converted to analog signal by described D/A chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005972.4A CN104601222A (en) | 2015-01-07 | 2015-01-07 | Petroleum pipeline cable inquiry unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005972.4A CN104601222A (en) | 2015-01-07 | 2015-01-07 | Petroleum pipeline cable inquiry unit |
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| CN104601222A true CN104601222A (en) | 2015-05-06 |
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| CN201510005972.4A Pending CN104601222A (en) | 2015-01-07 | 2015-01-07 | Petroleum pipeline cable inquiry unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965693A (en) * | 2020-08-21 | 2020-11-20 | 电子科技大学 | Pipeline trend tracing method and system based on optical cable |
| CN112129490A (en) * | 2020-10-16 | 2020-12-25 | 杨继涛 | Multifunctional optical cable detection device and method |
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| CN1937459A (en) * | 2005-08-23 | 2007-03-28 | 株式会社Kt | Apparatus and method for identification of optical cable |
| CN101051869A (en) * | 2007-05-17 | 2007-10-10 | 上海光朗信通讯技术有限公司 | Safety monitor system of optical cable communication line |
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| CN112129490A (en) * | 2020-10-16 | 2020-12-25 | 杨继涛 | Multifunctional optical cable detection device and method |
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Application publication date: 20150506 |