CN109187670A - A kind of communications optical cable splice tray intelligent checking system - Google Patents
A kind of communications optical cable splice tray intelligent checking system Download PDFInfo
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- CN109187670A CN109187670A CN201811203164.9A CN201811203164A CN109187670A CN 109187670 A CN109187670 A CN 109187670A CN 201811203164 A CN201811203164 A CN 201811203164A CN 109187670 A CN109187670 A CN 109187670A
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- capacitance
- optical cable
- splice tray
- communications optical
- measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of communications optical cable splice tray intelligent checking systems, including two-sided capacitance sensor unit, obtain the projection information of communications optical cable splice tray internal capacitance distribution situation；Capacitance measurement and data acquisition unit, the capacitance obtained to two-sided capacitance sensor unit measure, handle and are sent to computer picture reconstruction unit；Computer picture reconstruction unit rebuilds communications optical cable splice tray inner section.The present invention this utilize Noninvasive electrical capacitance tomography, without artificial climbing shaft tower, without opening and checking splice tray inside in the case where, pass through the two-sided capacitance sensor of application autonomous research and development, utilize computer picture algorithm for reconstructing, the image reconstruction of splice tray inner fiber and components corrosion can be completed, that realizes pillow formula cable junction box internal damage does not power off intelligent measurement, effectively reduces route O&M cost, route O&M efficiency is greatly improved.
Description
Technical field
The present invention relates to communication check technical field, especially a kind of communications optical cable splice tray intelligent checking system.
Background technique
Pillow formula optical cable connecting box is generally positioned on low pressure shaft tower or in electric power vertical shaft, due to weather conditions, box internal poles
Easily water inlet or frost leads to components corrosion, fibercuts.In the past, it is desirable to judge the quality of splice tray, it can only be by manually climbing
Upper shaft tower opens splice tray and checks internal damage situation.
Capacitance sensor utilizes the edge effect of capacitor, and sensor can generate accordingly the medium with certain dielectric constant
Capacitance.Combination between each detecting electrode can provide multiple measurement capacitances, and in this, as the projection number of reconstruction image
According to.Previous detection main problem has that sensitivity is low, detection weak output signal etc., these problems all with the shape of sensor, physics
Size is related.And the performance of sensor is not only determined by effective distance between electrode plate, increasing effective area can be improved sensing
The sensitivity level of device, but additional noise jamming can be introduced.It is then insensitive to detection signal to reduce effective area, image reconstruction point
Resolution will reduce.Therefore, the physical parameter design of sensor is needed to comprehensively consider.
Summary of the invention
The object of the present invention is to provide a kind of communications optical cable splice tray intelligent checking systems, realize in connection of communication cable box
Portion's non-destructive testing.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of communications optical cable splice tray intelligent checking system, including two-sided capacitance sensor unit obtain communications optical cable and connect
The projection information of continuous box internal capacitance distribution situation；
Capacitance measurement and data acquisition unit measure the capacitance that two-sided capacitance sensor unit obtains, handle
And it is sent to computer picture reconstruction unit；
Computer picture reconstruction unit rebuilds communications optical cable splice tray inner section.
Further, the two-sided capacitance sensor unit includes two electrode plates disposed in parallel, tested communication when measurement
Optical cable connecting box is between two electrode plates.
Further, the electrode plate surface is provided with m*n measuring electrode arranged in a matrix, between adjacent measurement electrodes
And earth conductor is provided between measuring electrode and peripheral region.
Further, the capacitance measurement with data acquisition unit includes DSP control module, capacitance measurement module, exchanges
Amplification circuit module, full-wave rectifying circuit module, low-pass filter circuit module and AD measuring circuit module, capacitance measurement module
Input terminal is connect with the output end of two-sided capacitance sensor unit, and output end is connect with the input terminal of ac amplifier circuit module,
The output end of ac amplifier circuit module and the input terminal of full-wave rectifying circuit connect, the output end and low pass of full-wave rectifying circuit
The input terminal of filter circuit module connects, the output end of low-pass filter circuit module after AD measuring circuit module with computer graphic
As the data input pin of reconstruction unit connects.
Further, the computer picture reconstruction unit rebuilds tested communications optical cable splice tray inner section,
The dielectric constant that inverse operation obtains inside communications optical cable splice tray is carried out according to capacitance of the ETC image processing algorithm to acquisition to divide
Cloth rebuilds distributed image inside communications optical cable splice tray.
The effect provided in summary of the invention is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution have the following advantages that or the utility model has the advantages that
This utilizes the electrical capacitance tomography of Noninvasive to the present invention, is climbing shaft tower, without opening simultaneously without artificial
In the case where checking splice tray inside, by the two-sided capacitance sensor of application autonomous research and development, is rebuild and calculated using computer picture
Method can be completed the image reconstruction of splice tray inner fiber and components corrosion, realize pillow formula cable junction box internal damage not
Intelligent measurement is powered off, route O&M cost is effectively reduced, route O&M efficiency is greatly improved.Traditional sensors are mostly circular ring shape,
It is not suitable with the shape of optical cable connecting box, measurement sensitivity is extremely low.The biplane sensor of independent research, effectively agrees with splice tray
Shape eliminates circuit noise, greatly improves measured capacitance value sensitivity, accuracy.
Detailed description of the invention
Fig. 1 is detection system structure of the present invention；
Fig. 2 is capacitance measurement of the present invention and data acquisition unit structural schematic diagram.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used to realize different knots of the invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
As shown in Figure 1, a kind of communications optical cable splice tray intelligent checking system, including two-sided capacitance sensor unit, it obtains
The projection information of communications optical cable splice tray internal capacitance distribution situation；Capacitance measurement and data acquisition unit pass two-sided capacitor
The capacitance that sensor cell obtains is measured, is handled and is sent to computer picture reconstruction unit；Computer picture is rebuild single
Member rebuilds communications optical cable splice tray inner section.
Capacitance sensor is mainly made of 4 parts: detecting electrode, isolated pipe, bucking electrode and ground shield.Tradition
12 measuring electrodes of circular sensor are equidistantly surround, and testee is placed in circular electrode center, are mainly used for round, cylinder thing
The measurement and imaging of body.And optical cable connecting box is cubic shape, such as uses typical round sensor, then can not accurately measure and right
Internal damage situation is imaged.Therefore our independent researches double-side copper sensor.
Two-sided capacitance sensor unit includes two electrode plates disposed in parallel, and dual sided sensor is surveyed by constituting to copper conductor
Communications optical cable splice tray is tested when amount between two electrode plates.Electrode plate surface is provided with 4*3 measurement electricity arranged in a matrix
Pole is provided with earth conductor between adjacent measurement electrodes and measuring electrode and peripheral region.When working sensor, due to
Tested optical cable connecting box material and water have different dielectric constants, by applying certain voltage, dielectric to 12 electrodes
Constant can change.At this point, by the capacitance that data collection system will acquire be sent to image re-construction system he, by image weight
It builds computer to be responsible for being rebuild tested splice tray inner inlet situation according to algorithm, and is shown in real time in a manner of visual
Show.
As shown in Fig. 2, capacitance measurement with data acquisition unit includes DSP control module, capacitance measurement module, exchanges amplification
Circuit module, full-wave rectifying circuit module, low-pass filter circuit module and AD measuring circuit module, the input of capacitance measurement module
End is connect with the output end of two-sided capacitance sensor unit, and output end is connect with the input terminal of ac amplifier circuit module, exchange
The output end of amplification circuit module and the input terminal of full-wave rectifying circuit connect, the output end and low-pass filtering of full-wave rectifying circuit
The input terminal of circuit module connects, the output end of low-pass filter circuit module after AD measuring circuit module with computer picture weight
Build the data input pin connection of unit.
In measurement, which first measures the capacitance in splice tray, then obtain one it is required micro-
Small AC signal, by this signal after ac amplifier circuit amplifies, then through full-wave rectifying circuit by signal by AC signal
Become direct current signal, then export the direct current signal using low-pass filter circuit, is transferred to computer picture reconstructing system.Quilt
The changing value for surveying capacitor in communications optical cable splice tray is very small, therefore capacitor, after measuring circuit, serial number passes through enhanced processing,
Then after carrying out full-wave rectification, higher hamonic wave is removed by low-pass filter circuit, obtains the direct current directly proportional to measured capacitance
Pressure.
Computer picture reconstruction unit rebuilds tested communications optical cable splice tray inner section, at ETC image
Adjustment method carries out the dielectric constant that inverse operation obtains inside communications optical cable splice tray to the capacitance of acquisition and is distributed, and rebuilds Communication ray
Distributed image inside cable splice tray.ECT image reconstruction algorithm can be described as two big contents, i.e. the modeling of direct problem and inverse problem
It solves.Direct problem is exactly to be distributed ε and boundary condition by known dielectric constant, finds out the capacitance C between each electrode pair, and obtain
To the mapping relations between capacitance and dielectric constant.The committed step of ECT image reconstruction is just to solve for inverse problem, i.e., by measuring
Capacitance acquire dielectric constant distribution.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (5)
1. a kind of communications optical cable splice tray intelligent checking system, characterized in that including two-sided capacitance sensor unit, obtain communication
The projection information of optical cable connecting box internal capacitance distribution situation；
Capacitance measurement and data acquisition unit measure the capacitance that two-sided capacitance sensor unit obtains, handle concurrently
Give computer picture reconstruction unit；
Computer picture reconstruction unit rebuilds communications optical cable splice tray inner section.
2. the system as claimed in claim 1, characterized in that the two-sided capacitance sensor unit includes two electricity disposed in parallel
Pole plate, tested communications optical cable splice tray is between two electrode plates when measurement.
3. system as claimed in claim 2, characterized in that the electrode plate surface is provided with m*n measurement arranged in a matrix
Electrode is provided with earth conductor between adjacent measurement electrodes and measuring electrode and peripheral region.
4. the system as claimed in claim 1, characterized in that the capacitance measurement and data acquisition unit include DSP control mould
Block, capacitance measurement module, ac amplifier circuit module, full-wave rectifying circuit module, low-pass filter circuit module and AD measurement electricity
Road module, the input terminal of capacitance measurement module are connect with the output end of two-sided capacitance sensor unit, output end with exchange amplification
The input terminal of circuit module connects, and the output end of ac amplifier circuit module and the input terminal of full-wave rectifying circuit connect, all-wave
The output end of rectification circuit is connect with the input terminal of low-pass filter circuit module, and the output end of low-pass filter circuit module is surveyed through AD
It is connect after amount circuit module with the data input pin of computer picture reconstruction unit.
5. the system as claimed in claim 1, characterized in that the computer picture reconstruction unit connects tested communications optical cable
Box inner section is rebuild, and is carried out inverse operation acquisition communications optical cable according to capacitance of the ETC image processing algorithm to acquisition and is connect
Dielectric constant distribution inside continuous box, rebuilds distributed image inside communications optical cable splice tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811203164.9A CN109187670A (en) | 2018-10-16 | 2018-10-16 | A kind of communications optical cable splice tray intelligent checking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811203164.9A CN109187670A (en) | 2018-10-16 | 2018-10-16 | A kind of communications optical cable splice tray intelligent checking system |
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| CN109187670A true CN109187670A (en) | 2019-01-11 |
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| CN201811203164.9A Pending CN109187670A (en) | 2018-10-16 | 2018-10-16 | A kind of communications optical cable splice tray intelligent checking system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900751A (en) * | 2019-02-27 | 2019-06-18 | 北京航空航天大学 | A kind of portable capacitance chromatography imaging measuring device |
| CN111880057A (en) * | 2020-07-14 | 2020-11-03 | 湖南大学 | Cable insulation detection method for dielectric constant distribution display of insulating layer |
| CN111999564A (en) * | 2020-08-07 | 2020-11-27 | 云南电网有限责任公司电力科学研究院 | Method and device for calculating internal dielectric constant value of cable accessory |
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| CN1595132A (en) * | 2004-06-29 | 2005-03-16 | 西安交通大学 | Two-phase fluid mesh capacitance tomography method |
| US20100097374A1 (en) * | 2005-03-22 | 2010-04-22 | The Ohio State University | 3d and real time electrical capacitance volume-tomography sensor design and image reconstruction |
| CN104731425A (en) * | 2013-12-23 | 2015-06-24 | 联阳半导体股份有限公司 | Capacitor Sensor Circuit |
| CN104794870A (en) * | 2015-04-22 | 2015-07-22 | 国家电网公司 | Electric power optical cable maintenance pre-warning system and method |
| CN204855437U (en) * | 2015-06-17 | 2015-12-09 | 中国石油大学(华东) | Plane electrical capacitance tomography sensor |
| CN106771642A (en) * | 2015-11-19 | 2017-05-31 | 许亚夫 | A kind of capacitance measurement circuit for capacitance tomography system |
| CN107748129A (en) * | 2017-11-30 | 2018-03-02 | 清华大学 | A kind of detecting system and its detection method for the infiltration of porous media insulating sheet material |
| CN208888173U (en) * | 2018-10-16 | 2019-05-21 | 国网山东省电力公司信息通信公司 | A kind of communications optical cable splice tray intelligent checking system |
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2018
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Patent Citations (8)
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| CN1595132A (en) * | 2004-06-29 | 2005-03-16 | 西安交通大学 | Two-phase fluid mesh capacitance tomography method |
| US20100097374A1 (en) * | 2005-03-22 | 2010-04-22 | The Ohio State University | 3d and real time electrical capacitance volume-tomography sensor design and image reconstruction |
| CN104731425A (en) * | 2013-12-23 | 2015-06-24 | 联阳半导体股份有限公司 | Capacitor Sensor Circuit |
| CN104794870A (en) * | 2015-04-22 | 2015-07-22 | 国家电网公司 | Electric power optical cable maintenance pre-warning system and method |
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| CN107748129A (en) * | 2017-11-30 | 2018-03-02 | 清华大学 | A kind of detecting system and its detection method for the infiltration of porous media insulating sheet material |
| CN208888173U (en) * | 2018-10-16 | 2019-05-21 | 国网山东省电力公司信息通信公司 | A kind of communications optical cable splice tray intelligent checking system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900751A (en) * | 2019-02-27 | 2019-06-18 | 北京航空航天大学 | A kind of portable capacitance chromatography imaging measuring device |
| CN109900751B (en) * | 2019-02-27 | 2020-12-04 | 北京航空航天大学 | Portable capacitance tomography measuring device |
| CN111880057A (en) * | 2020-07-14 | 2020-11-03 | 湖南大学 | Cable insulation detection method for dielectric constant distribution display of insulating layer |
| CN111999564A (en) * | 2020-08-07 | 2020-11-27 | 云南电网有限责任公司电力科学研究院 | Method and device for calculating internal dielectric constant value of cable accessory |
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