CN106546867B - Based on garnet optics leakage current sensor - Google Patents
Based on garnet optics leakage current sensor Download PDFInfo
- Publication number
- CN106546867B CN106546867B CN201710015599.XA CN201710015599A CN106546867B CN 106546867 B CN106546867 B CN 106546867B CN 201710015599 A CN201710015599 A CN 201710015599A CN 106546867 B CN106546867 B CN 106546867B
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- China
- Prior art keywords
- garnet
- leakage current
- module
- graphite
- detection unit
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to one kind to be based on garnet optics leakage current sensor, include laser, the first lens, detection unit, the second lens and optical receiver, wherein detection unit is made of garnet module, graphite and the tested module being successively bonded from front to back, graphite area is greater than garnet module area, and garnet module and graphite form induction module；The laser of laser output enters detection unit by the output of the first lens focus, incident light reaches graphite by garnet module, garnet module is again passed through through graphite reflection and forms reflection light output, and the light of detection unit output after the second lens focus by optical receiver by being received.Once tested module has leakage current to generate the variation that will cause detection unit reflected light., system few with light path element designs simple, high reliability；It is capable of the intensity of real-time detection leakage current, and leakage current can be eliminated.
Description
Technical field
The present invention relates to a kind of leakage current test technologies, in particular to a kind of to be sensed based on garnet optics leakage current
Device.
Background technique
Any insulator be not it is absolute non-conductive, such as the insulation of circuit board, wire external layer, element pin between all answer
This is insulation, but by the water vapour in dust, air, pollutant effects, insulator is inevitably made to have some leakages
Electric current exists.When leakage current is in the very low range of permission, electrical equipment will not generally be had an impact.But when dust stratification mistake in machine
Under the conditions of more, bad environments etc., it is possible to which the normal work for influencing equipment contracts for fixed output quotas such as TV set high-voltage and gives birth to sparking.So right
The detection and elimination of leakage current are vital.Currently, having been had already appeared in the related fields for detecting leakage current relevant
Sensor, there are expensive, detection accuracy is low, and the disadvantages of cannot eliminate existing leakage current.
Patent application be 201110316503.6,201310674898.6,201520174958.2,
201510397258.4, in optics leakage current sensor as 201520293228.4 etc., although the relative error of device has
Reduced, is also improved in terms of sensitivity, but the overall construction design of optics leakage current sensor is to be improved, it is difficult
Intuitively to reflect leakage current, outside noise such as temperature, vibration can generate biggish error to system, and size needs further
Reduce, structure needs to be further simplified to reduce cost and convenient for operation.
Summary of the invention
The present invention be directed to leakage current sensor there are the problem of, propose and a kind of spread based on the electric leakage of garnet optics
Sensor can obtain indirectly electric leakage stream information by analyzing smooth situation of change to be measured and can eliminate the sensor of leakage current.
The technical solution of the present invention is as follows: a kind of be based on garnet optics leakage current sensor, thoroughly comprising laser, first
Mirror, detection unit, the second lens and optical receiver, wherein detection unit by be successively bonded from front to back garnet module, stone
Ink and tested module composition, graphite area are greater than garnet module area, and garnet module and graphite form induction module；
The laser of laser output enters detection unit by the output of the first lens focus, and incident light passes through garnet module
Graphite is reached, garnet module is again passed through through graphite reflection and forms reflection light output, the light of detection unit output passes through second
It is received after lens focus by optical receiver, optical receiver obtains the letter of leakage current by the variation of detection intensity of reflected light distribution
Breath.
The laser is low-power semiconductor laser, Output of laser wavelength 900nm-1700nm.
The detection unit incident light and the angle of reflected light are 10 ° to 150 °.
The thickness range of the graphite is 10nm-5cm, determines selected thickness according to the leakage current of detection.
The beneficial effects of the present invention are: the present invention is based on garnet optics leakage current sensors, have light path element
Less, system designs simple, high reliability；It is capable of the intensity of real-time detection leakage current, and leakage current can be eliminated.
Detailed description of the invention
Fig. 1 is that the present invention is based on garnet optics leakage current sensor structural schematic diagrams.
Specific embodiment
It is based on garnet optics leakage current sensor structural schematic diagram as shown in Figure 1, optics leakage current sensor includes:
Light source unit 10, detection unit 20, receiving unit 30.
Light source unit 10 contains light source portion 11 and the first lens 12, and light source portion 11 uses low-power semiconductor laser, defeated
Optical maser wavelength 900nm-1700nm out.The laser that laser 11 exports focuses output by the first lens 12 and enters detection unit
20。
Detection unit 20 is by the garnet module 21a, the graphite 21b that are successively bonded from front to back and 22 groups of tested module
At 302 area of graphite is greater than 301 area of garnet module, and garnet module 21a and graphite 21b form induction module 21, incident
Light reaches graphite 21b by garnet module 21a, and it is defeated to again pass through garnet module 21a formation reflected light through graphite 21b reflection
Out.The leakage current of tested module can make the reflected light of output change, and be obtained by the variation of detection intensity of reflected light distribution
The information of leakage current.Incident light and the angle of reflected light are 10 ° -150 °.The thickness range of the graphite is 10nm-5cm, according to
The leakage current of detection determines selected thickness.
Second lens 31 and optical receiver 32 of the receiving unit 30 containing moveable position.The light that detection unit 20 exports is logical
It crosses after the second lens 31 focus and is received by optical receiver 32.
Relative distance is adjustable between second lens 31 and receiver 32, by the position for adjusting the second lens 31 and receiver 32
Setting keeps received light quality to be measured best, convenient for observation and analysis.
Induction module 21 is tightly attached on tested module 22, once tested module has leakage current generation that will cause reflected light
Variation.
Light source portion 11 issues laser and passes through the first lens 12, is reflected by induction module 21, and reflected light passes through lens 31, reaches
Receiver 32.
Claims (4)
1. one kind is based on garnet optics leakage current sensor, which is characterized in that single comprising laser, the first lens, detection
Member, the second lens and optical receiver, wherein detection unit by be successively bonded from front to back garnet module, graphite and tested
Module composition, graphite surface product are greater than garnet Modular surface product, and garnet module and graphite form induction module；
The laser of laser output enters detection unit by the output of the first lens focus, and incident light is reached by garnet module
Graphite again passes through garnet module through graphite reflection and forms reflection light output, and the light of detection unit output passes through the second lens
It is received after focusing by optical receiver, optical receiver obtains the information of leakage current by the variation of detection intensity of reflected light distribution.
2. being based on garnet optics leakage current sensor according to claim 1, which is characterized in that the laser is small
Power semiconductor laser, Output of laser wavelength 900nm-1700nm.
3. being based on garnet optics leakage current sensor according to claim 1, which is characterized in that the detection unit enters
The angle for penetrating light and reflected light is 10 ° to 150 °.
4. being based on garnet optics leakage current sensor according to claim 1, which is characterized in that the thickness of the graphite
Range is 10nm-5cm, determines selected thickness according to the leakage current of detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015599.XA CN106546867B (en) | 2017-01-10 | 2017-01-10 | Based on garnet optics leakage current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015599.XA CN106546867B (en) | 2017-01-10 | 2017-01-10 | Based on garnet optics leakage current sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106546867A CN106546867A (en) | 2017-03-29 |
| CN106546867B true CN106546867B (en) | 2019-05-24 |
Family
ID=58397467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710015599.XA Expired - Fee Related CN106546867B (en) | 2017-01-10 | 2017-01-10 | Based on garnet optics leakage current sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN106546867B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843367A (en) * | 2017-09-29 | 2018-03-27 | 上海理工大学 | Optical pressure sensor |
| CN107764442A (en) * | 2017-09-29 | 2018-03-06 | 上海理工大学 | Reflective optic pressure sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253272B (en) * | 2011-04-29 | 2013-07-03 | 南京邮电大学 | Current measurement and protective sensor for high-voltage alternating current |
| CN103116057B (en) * | 2013-01-18 | 2015-08-26 | 上海理工大学 | Garnet type photoelectric type current sensor device and preparation method |
| CN104020337A (en) * | 2014-06-17 | 2014-09-03 | 上海理工大学 | Garnet voltage and current sensor |
| CN204154989U (en) * | 2014-10-31 | 2015-02-11 | 上海理工大学 | Carbuncle type Polarization Controller |
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2017
- 2017-01-10 CN CN201710015599.XA patent/CN106546867B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN106546867A (en) | 2017-03-29 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190524 Termination date: 20220110 |