CN206235415U - Intelligent high-pressure cable monitoring system - Google Patents
Intelligent high-pressure cable monitoring system Download PDFInfo
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- CN206235415U CN206235415U CN201621338527.6U CN201621338527U CN206235415U CN 206235415 U CN206235415 U CN 206235415U CN 201621338527 U CN201621338527 U CN 201621338527U CN 206235415 U CN206235415 U CN 206235415U
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- testing equipment
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Abstract
The utility model belongs to technical field of electric power and discloses intelligent high-pressure cable monitoring system, including monitoring computer, testing equipment and sensor fibre, sensor fibre is connected with testing equipment, testing equipment is connected with monitoring computer, the testing equipment includes light source, light pulse forms unit, photodetector unit and data processing unit, data collecting card in the data processing unit is stored and processed to output signal, complete the measurement of primary information curve, the photodetector unit includes photoelectric detector, microwave local oscillator, frequency mixer, bandpass filter, the testing equipment also includes that light pulse forms unit.The utility model only need to lay an optical fiber and can provide the running temperature and strain information of whole piece cable with high-tension cable, with it is noiseless, radiationless, construct it is simple, safe the features such as, scientific basis can be provided for the temperature of cable and strain detecting and safe operation, so as to be effectively prevented from the generation of high-tension cable security incident.
Description
Technical field
The utility model is specifically related to intelligent high-pressure cable monitoring system, belongs to technical field of electric power.
Background technology
Pulling force or soil shrinkage that temperature Change and external environment condition are caused, may produce high-tension cable horizontal or vertical
Deformation, high-tension cable armouring, the rupture of lead (aluminium) sheath may be caused when serious, or even fracture, meanwhile, the fire of high-tension cable
Calamity also it occur frequently that.
Utility model content
The technical problems to be solved in the utility model overcomes existing defect, there is provided intelligent high-pressure cable monitoring system, only
An optical fiber need to be laid with high-tension cable can provide the running temperature and strain information of whole piece cable, with it is noiseless, without spoke
The features such as penetrating, construct simple, safe, can provide scientific basis for the temperature of cable and strain detecting and safe operation, from
And the generation of high-tension cable security incident is effectively prevented from, in can effectively solving the problems, such as background technology.
In order to solve the above-mentioned technical problem, the utility model provides following technical scheme：
The utility model provides intelligent high-pressure cable monitoring system, including monitoring computer, testing equipment and sensor fibre,
Sensor fibre is connected with testing equipment, and testing equipment is connected with monitoring computer, and the testing equipment includes light source, light pulse shape
Into unit, photodetector unit and data processing unit, the data collecting card in the data processing unit enters to output signal
Row storage and treatment, complete the measurement of primary information curve, and the photodetector unit includes photoelectric detector, microwave local oscillation
Source, frequency mixer, bandpass filter, the testing equipment also include that light pulse forms unit, and the light pulse forms unit by sound
Optical modulator, amplifier and wave filter group are directed coupler and are divided into two parts into, the continuous light that light source sends, a part by
EOM incides sensor fibre after being modulated to pulsed light, and another part incides Photoelectric Detection as local oscillator light together with scattering light
Device carries out heterodyne detection, takes out difference frequency component, i.e. brillouin frequency shifting signal, and treatment is analyzed to Brillouin's frequency spectrum, obtains cloth
In deep frequency displacement and intensity measured value, and export after being converted to the temperature and strain information of optical cable each point.
Preferably, enter in the photoelectric detector after Brillouin scattering light amplification filtering carries out heterodyne inspection with reference light
Survey, export brillouin frequency shifting signal, accurate signal transacting cannot be carried out because the signal frequency for obtaining is higher, therefore will need to believe
Number frequency down conversion is analyzed treatment to relatively low frequency subsequently into data processing unit.
Preferably, the sensor fibre is single-mode fiber.
Preferably, the EOM is electrooptic modulator.
The beneficial effect that the utility model is reached is：Intelligent high-pressure cable monitoring system, need to only lay with high-tension cable
A piece optical fiber can provide the running temperature and strain information of whole piece cable, simple, safe with noiseless, radiationless, construction
The features such as property is high, can provide scientific basis, so as to be effectively prevented from high pressure for the temperature of cable and strain detecting and safe operation
The generation of cable security incident.
Brief description of the drawings
Accompanying drawing is used for providing being further understood to of the present utility model, and constitutes a part for specification, with this practicality
New embodiment is used to explain the utility model together, does not constitute to limitation of the present utility model.
In the accompanying drawings：
Fig. 1 is the intelligent high-pressure cable monitoring system theory diagram described in the utility model embodiment；
Specific embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Embodiment：Refer to Fig. 1, the utility model intelligent high-pressure cable monitoring system, the system include monitoring computer,
Testing equipment and sensor, the testing equipment also include that light source, light pulse form unit, photodetector unit and data processing
Unit, the continuous light that light source sends is directed coupler and is divided into two parts, and a part is modulated to pulse by electrooptic modulator (EOM)
Sensor fibre is incided after light, another part incides photoelectric detector and carries out heterodyne inspection as local oscillator light together with scattering light
Survey, take out difference frequency component, i.e. brillouin frequency shifting signal, be analyzed treatment to Brillouin's frequency spectrum, obtain Brillouin shift and by force
The measured value of degree, and be converted to output after the temperature and strain information of optical cable each point.
In the present embodiment, light pulse forms unit by acousto-optic modulator, amplifier and wave filter group into the unit can
Realize that by continuous light modulation be pulsed light, the amplification of optical signal and ASE noises such as filter at the function, and photodetector unit includes light
Photodetector, microwave local oscillator, frequency mixer, bandpass filter, enter in photoelectric detector after Brillouin scattering light amplification filtering
Heterodyne detection, output difference frequency electric signal (brillouin frequency shifting signal), due to the signal frequency for obtaining nothing higher are carried out with reference light
Method carries out accurate signal transacting, therefore signal frequency need to be downconverted into relatively low frequency, subsequently into data processing unit
Treatment is analyzed, the data collecting card in data processing unit is stored and processed to output signal, completes primary information
Data are entered, it is necessary to take multiple measurements by the measurement of curve due to the loss of whole detecting system and noise to the influence tested
Row cumulative mean and Wavelet Denoising Method are processed, and true temperature and the curve of strain in Voltage Cable Lines Construction can be more reflected to obtain,
Information processing is set up on the basic platform of Virtual instrument LabVIEW 8.6, by each position working condition of high-tension cable itself
Monitor in real time, can effectively prevent the generation of security incident.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, this is not limited to
Utility model, although being described in detail to the utility model with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc.,
Should be included within protection domain of the present utility model.
Claims (4)
1. intelligent high-pressure cable monitoring system, including monitoring computer, testing equipment and sensor fibre, it is characterised in that：
Sensor fibre is connected with testing equipment, and testing equipment is connected with monitoring computer；The testing equipment includes light source, Guang Mai
Punching forms unit, photodetector unit and data processing unit, and the data collecting card in the data processing unit is believed output
Number stored and processed, completed the measurement of primary information curve；
The photodetector unit includes photoelectric detector, microwave local oscillator, frequency mixer, bandpass filter, the testing equipment
Also include that light pulse forms unit, the light pulse formed unit by acousto-optic modulator, amplifier and wave filter group into；
The continuous light that light source sends is directed coupler and is divided into two parts, and a part is modulated to incide biography after pulsed light by EOM
Photosensitive fibre, another part incides photoelectric detector and carries out heterodyne detection as local oscillator light together with scattering light, takes out difference frequency point
Amount, i.e. brillouin frequency shifting signal, treatment is analyzed to Brillouin's frequency spectrum, obtains the measured value of Brillouin shift and intensity, and
Exported after being converted to the temperature and strain information of optical cable each point.
2. intelligent high-pressure cable monitoring system according to claim 1, it is characterised in that Brillouin scattering light amplification is filtered
Afterwards into heterodyne detection is carried out in the photoelectric detector with reference light, brillouin frequency shifting signal is exported, due to the signal for obtaining
Frequency is higher cannot to carry out accurate signal transacting, therefore signal frequency need to be downconverted into relatively low frequency, subsequently into number
Treatment is analyzed according to processing unit.
3. intelligent high-pressure cable monitoring system according to claim 1, it is characterised in that the sensor fibre is single-mode optics
It is fine.
4. intelligent high-pressure cable monitoring system according to claim 1, it is characterised in that the EOM is electrooptic modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338527.6U CN206235415U (en) | 2016-12-08 | 2016-12-08 | Intelligent high-pressure cable monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338527.6U CN206235415U (en) | 2016-12-08 | 2016-12-08 | Intelligent high-pressure cable monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206235415U true CN206235415U (en) | 2017-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621338527.6U Expired - Fee Related CN206235415U (en) | 2016-12-08 | 2016-12-08 | Intelligent high-pressure cable monitoring system |
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| Country | Link |
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| CN (1) | CN206235415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111051832A (en) * | 2017-05-11 | 2020-04-21 | 费布斯光学公司 | Photoelectric device for optical fiber distributed measurement |
-
2016
- 2016-12-08 CN CN201621338527.6U patent/CN206235415U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111051832A (en) * | 2017-05-11 | 2020-04-21 | 费布斯光学公司 | Photoelectric device for optical fiber distributed measurement |
| CN111051832B (en) * | 2017-05-11 | 2021-10-08 | 费布斯光学公司 | Photoelectric device for optical fiber distributed measurement |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20181208 |