CN112857555A - Device for collecting data of underground sensor - Google Patents
Device for collecting data of underground sensor Download PDFInfo
- Publication number
- CN112857555A CN112857555A CN202110053346.8A CN202110053346A CN112857555A CN 112857555 A CN112857555 A CN 112857555A CN 202110053346 A CN202110053346 A CN 202110053346A CN 112857555 A CN112857555 A CN 112857555A
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- Prior art keywords
- vibration
- underground
- sensor
- data
- optical fiber
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- 238000004891 communication Methods 0.000 claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 6
- 238000000253 optical time-domain reflectometry Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a device for collecting data of an underground sensor, which comprises a vibration generator, an underground communication optical cable and an optical fiber distributed vibration sensor, wherein the vibration generator is arranged underground, is electrically connected with sensors at different underground positions, and is used for receiving data transmitted by the sensors at different underground positions and converting the received data into vibration signals by vibration coding; the vibration signal acts on the underground communication optical cable, and the optical fiber distributed vibration sensor arranged on the ground detects and positions the vibration of the underground communication optical cable to obtain the vibration code of the corresponding position sensor; the optical fiber distributed vibration sensor decodes the vibration codes to obtain data output by the underground sensor at the corresponding position, and the data transmission from the underground to the ground of the sensor is realized. The device can realize simultaneous acquisition and communication of a large amount of sensor data in a large underground range and a long distance, and solves the communication problem of all sensors in the underground optical cable coverage space range.
Description
Technical Field
The invention relates to the technical field of data acquisition of underground pipe networks, in particular to a device for acquiring data of underground sensors.
Background
At present, various underground sensors need to be additionally installed in an underground environment of a long-distance pipeline to complete monitoring on the safety of the underground pipeline network in an underground petroleum and natural gas transmission, heat supply and communication pipeline network, and a reliable communication mode which can adapt to large-range, long-distance and large-quantity underground sensor output data from underground to ground is needed for acquiring the data of the underground sensors.
The conventional acquisition methods in the prior art include wireless communication and wired communication, wherein the wireless communication is realized by transmitting underground data to the ground in a wireless electronic communication mode, the mode is influenced and limited by the underground environment, the communication is unstable, the method cannot adapt to large-range, long-distance and large-amount underground sensor data communication, and the confidentiality and reliability are not high; the wired communication is to transmit underground data to the ground in an electronic or optical communication mode, which has high requirements on underground power supply, needs to be separately laid with cables or optical cables, cannot adapt to large-range, long-distance and large-quantity underground sensor data communication, and has low confidentiality and reliability.
Disclosure of Invention
The invention aims to provide a device for collecting data of underground sensors, which can realize simultaneous collection and communication of a large amount of data of underground sensors in a large range and a long distance and solve the communication problem of all sensors in an underground optical cable coverage space range.
The purpose of the invention is realized by the following technical scheme:
an apparatus for collecting subsurface sensor data, the apparatus comprising a vibration generator, an underground communication cable, and a fiber optic distributed vibration sensor, wherein:
the vibration generator is arranged underground, is electrically connected with the sensors at different underground positions, and is used for receiving data transmitted by the sensors at different underground positions and converting the received data into vibration signals by vibration coding;
the vibration signal acts on the underground communication optical cable, and the optical fiber distributed vibration sensor arranged on the ground detects and positions the vibration of the underground communication optical cable to obtain the vibration code of the corresponding position sensor;
the optical fiber distributed vibration sensor decodes the vibration codes to obtain data output by the underground sensor at the corresponding position, and the data transmission from the underground to the ground of the sensor is realized.
According to the technical scheme provided by the invention, the device can realize simultaneous acquisition and communication of a large amount of sensor data in a large underground range and a long distance, and solves the communication problem of all sensors in the underground optical cable coverage space range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of an apparatus for collecting data from underground sensors according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vibration encoding process according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an implementation of the optical fiber distributed vibration sensor according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the present invention will be further described in detail with reference to the accompanying drawings, and fig. 1 is a schematic diagram illustrating an overall structure of an apparatus for collecting data of an underground sensor according to an embodiment of the present invention, where the apparatus includes a vibration generator, an underground communication optical cable, and an optical fiber distributed vibration sensor, where:
the vibration generator is arranged underground, is electrically connected with the sensors at different underground positions, and is used for receiving data transmitted by the sensors at different underground positions and converting the received data into vibration signals by vibration coding;
the vibration signal acts on the underground communication optical cable, and the optical fiber distributed vibration sensor arranged on the ground detects and positions the vibration of the underground communication optical cable to obtain the vibration code of the corresponding position sensor;
the optical fiber distributed vibration sensor decodes the vibration codes to obtain data output by the underground sensor at the corresponding position, and the data transmission from the underground to the ground of the sensor is realized.
In a specific implementation, as shown in fig. 2, which is a schematic diagram of a process of vibration encoding according to an embodiment of the present invention, sensors at different locations in the ground may output data to a vibration generator in a binary format, and the vibration generator converts the data in the binary format into a series of vibrations at specific intervals to implement vibration encoding, where 0 in fig. 2 corresponds to no vibration; 1 corresponds to a vibration. Because the sensor output data is loaded to the underground communication optical cable through the vibration codes, the communication is encrypted communication, and the confidentiality and the reliability are higher.
The optical fiber distributed vibration sensor can detect the vibration of any position of the underground communication optical cable, and different vibration positions are obtained by decoding vibration codes. In specific implementation, the optical fiber distributed vibration sensor can be implemented by using a phase-sensitive optical time domain reflectometer phi-OTDR or a brillouin optical time domain reflectometer B-OTDR, as shown in fig. 3, an implementation structure schematic diagram of the optical fiber distributed vibration sensor according to the embodiment of the present invention is shown in fig. 3:
the optical fiber distributed vibration sensor comprises an optical fiber sensing host consisting of a laser light source, a modulator, an optical fiber circulator and a photoelectric detector, and a sensing optical fiber, wherein:
high-power laser emitted by the laser light source is modulated into pulse laser through the modulator, and the pulse laser enters the sensing optical fiber after passing through the optical fiber circulator;
the signal light carrying the vibration information of the sensor returns to the optical fiber circulator through the sensing optical fiber, and the signal light is received by the photoelectric detector;
the specific position of the sensor can be obtained by processing the received signal light, and the data collected by the sensor can be extracted by analyzing the vibration waveform.
The optical fiber distributed vibration sensor has very high detection sensitivity, and the vibration generator only needs to generate very weak vibration, so that low energy consumption and long-term work are realized.
It is noted that those skilled in the art will recognize that embodiments of the present invention are not described in detail herein. For example, the vibration generator may be implemented by other forms of vibration encoding, all of which achieve the objectives of the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An apparatus for collecting data from an underground sensor, the apparatus comprising a vibration generator, an underground communication cable, and a fiber optic distributed vibration sensor, wherein:
the vibration generator is arranged underground, is electrically connected with the sensors at different underground positions, and is used for receiving data transmitted by the sensors at different underground positions and converting the received data into vibration signals by vibration coding;
the vibration signal acts on the underground communication optical cable, and the optical fiber distributed vibration sensor arranged on the ground detects and positions the vibration of the underground communication optical cable to obtain the vibration code of the corresponding position sensor;
the optical fiber distributed vibration sensor decodes the vibration codes to obtain data output by the underground sensor at the corresponding position, and the data transmission from the underground to the ground of the sensor is realized.
2. An apparatus for collecting subsurface sensor data as claimed in claim 1,
the sensors at different locations in the subsurface output data to the vibration generator in a binary format;
the vibration generator converts the data in binary format into a series of vibrations with specific interval period to realize vibration coding.
3. An apparatus for collecting subsurface sensor data as claimed in claim 1,
the optical fiber distributed vibration sensor can detect vibration of any position of the underground communication optical cable, and different vibration positions are obtained by decoding vibration codes.
4. An apparatus for collecting subsurface sensor data as claimed in claim 1,
the optical fiber distributed vibration sensor is realized by adopting a phase-sensitive optical time domain reflectometer phi-OTDR or a Brillouin optical time domain reflectometer B-OTDR.
5. The apparatus for collecting data of underground sensor according to claim 1, wherein the fiber optic distributed vibration sensor comprises a fiber optic sensing host composed of a laser light source, a modulator, a fiber optic circulator and a photodetector, and a sensing fiber, wherein:
high-power laser emitted by the laser light source is modulated into pulse laser through the modulator, and the pulse laser enters the sensing optical fiber after passing through the optical fiber circulator;
the signal light carrying the vibration information of the sensor returns to the optical fiber circulator through the sensing optical fiber, and the signal light is received by the photoelectric detector;
the specific position of the sensor can be obtained by processing the received signal light, and the data collected by the sensor can be extracted by analyzing the vibration waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053346.8A CN112857555A (en) | 2021-01-15 | 2021-01-15 | Device for collecting data of underground sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053346.8A CN112857555A (en) | 2021-01-15 | 2021-01-15 | Device for collecting data of underground sensor |
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| Publication Number | Publication Date |
|---|---|
| CN112857555A true CN112857555A (en) | 2021-05-28 |
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| CN202110053346.8A Pending CN112857555A (en) | 2021-01-15 | 2021-01-15 | Device for collecting data of underground sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114125591A (en) * | 2022-01-24 | 2022-03-01 | 高勘(广州)技术有限公司 | Information processing method and corresponding system for optical fiber sensing communication |
| WO2023040571A1 (en) * | 2021-09-17 | 2023-03-23 | 高勘(广州)技术有限公司 | Communication method between base station and terminal, communication system and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09270090A (en) * | 1996-03-29 | 1997-10-14 | Hitachi Cable Ltd | Method for detecting distributed information |
| JPH112572A (en) * | 1997-06-13 | 1999-01-06 | Hitachi Cable Ltd | Physical quantity measuring method and measuring device using optical fiber |
| US20120035854A1 (en) * | 2010-08-09 | 2012-02-09 | Schlumberger Technology Corporation | Seismic acquisition system including a distributed sensor having an optical fiber |
| CN106461806A (en) * | 2014-05-16 | 2017-02-22 | 希里克萨有限公司 | Method and system for downhole object location and orientation determination |
| US20200249078A1 (en) * | 2019-02-06 | 2020-08-06 | Nec Laboratories America, Inc. | Uni-directional signal transmit method using distributed fiber sensing |
-
2021
- 2021-01-15 CN CN202110053346.8A patent/CN112857555A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09270090A (en) * | 1996-03-29 | 1997-10-14 | Hitachi Cable Ltd | Method for detecting distributed information |
| JPH112572A (en) * | 1997-06-13 | 1999-01-06 | Hitachi Cable Ltd | Physical quantity measuring method and measuring device using optical fiber |
| US20120035854A1 (en) * | 2010-08-09 | 2012-02-09 | Schlumberger Technology Corporation | Seismic acquisition system including a distributed sensor having an optical fiber |
| CN106461806A (en) * | 2014-05-16 | 2017-02-22 | 希里克萨有限公司 | Method and system for downhole object location and orientation determination |
| US20200249078A1 (en) * | 2019-02-06 | 2020-08-06 | Nec Laboratories America, Inc. | Uni-directional signal transmit method using distributed fiber sensing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040571A1 (en) * | 2021-09-17 | 2023-03-23 | 高勘(广州)技术有限公司 | Communication method between base station and terminal, communication system and storage medium |
| CN114125591A (en) * | 2022-01-24 | 2022-03-01 | 高勘(广州)技术有限公司 | Information processing method and corresponding system for optical fiber sensing communication |
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Application publication date: 20210528 |