CN106546867A - Based on garnet optics leakage current sensor - Google Patents
Based on garnet optics leakage current sensor Download PDFInfo
- Publication number
- CN106546867A CN106546867A CN201710015599.XA CN201710015599A CN106546867A CN 106546867 A CN106546867 A CN 106546867A CN 201710015599 A CN201710015599 A CN 201710015599A CN 106546867 A CN106546867 A CN 106546867A
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- Prior art keywords
- garnet
- module
- leakage current
- graphite
- detector unit
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- 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
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- 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 a kind of be based on garnet optics leakage current sensor, comprising laser instrument, the first lens, detector unit, the second lens and optical receiver, wherein detector unit is made up of garnet module, graphite and the tested module fitted successively from front to back, graphite area is more than garnet module area, garnet module and graphite composition induction module；The laser of laser instrument output enters detector unit by the first lens focuss output, incident illumination reaches graphite through garnet module, the reflection of Jing graphite again passes through garnet module and forms reflection light output, and the light of detector unit output is received by optical receiver after the second lens focuss.Once tested module has leakage current to produce the change that will cause detector unit reflected light.With light path element is few, system design 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 technology, more particularly to a kind of to be sensed based on garnet optics leakage current
Device.
Background technology
Any insulator be not it is absolute non-conductive, such as circuit board, all answer between wire external layer insulation, the pin of element etc.
This is insulation, but by the water vapour in dust, air, pollutant effects, inevitably makes insulator have some leakages
Electric current is present.When leakage current is in the very low range for allowing, impact will not be produced on electrical equipment typically.But work as dust stratification mistake in machine
Under the conditions of many, bad environments etc., it is possible to affect the normal work of equipment, such as TV set high-voltage to contract for fixed output quotas and give birth to sparking.So right
The detection of leakage current and eliminate it is critical that.At present, the association area in detection leakage current has occurred in that correlation
Sensor, exists expensive, and accuracy of detection is low, and the shortcomings of the leakage current of presence can not be eliminated.
Patent application be 201110316503.6,201310674898.6,201520174958.2,
201510397258.4, in such optics leakage current sensors such as 201520293228.4, although the relative error of device has
Reduced, also improved in terms of sensitivity, but the overall construction design of optics leakage current sensor is had much room for improvement, it is difficult
Intuitively to reflect leakage current, outside noise such as temperature, vibration can produce larger error to system, and size needs further
Reduce, structure needs further to be simplified with reduces cost and is easy to operation.
The content of the invention
The present invention be directed to the problem that leakage current sensor is present, it is proposed that a kind of to be spread based on the electric leakage of garnet optics
By analysis, sensor, can treat that light-metering situation of change obtains electric leakage stream information indirectly and can eliminate the sensor of leakage current.
The technical scheme is that：It is a kind of to be based on garnet optics leakage current sensor, comprising laser instrument, first saturating
Mirror, detector unit, the second lens and optical receiver, wherein detector unit are by the garnet module, stone fitted successively from front to back
Ink and tested module composition, graphite area are more than garnet module area, garnet module and graphite composition induction module；
The laser of laser instrument output enters detector unit by the first lens focuss output, and incident illumination is reached through garnet module
Graphite, the reflection of Jing graphite again pass through garnet module and form reflection light output, and the light of detector unit output passes through the second lens
Received by optical receiver after focusing, optical receiver obtains the information of leakage current by detecting the change of intensity of reflected light distribution.
The laser instrument be low-power semiconductor laser, Output of laser wavelength 900nm-1700nm.
The detector unit incident illumination is 10 ° to 150 ° with the angle of reflected light.
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 is：The present invention is based on garnet optics leakage current sensor, with light path element
Less, system design is simple, high reliability；It is capable of the intensity of real-time detection leakage current, and leakage current can be eliminated.
Description of the drawings
Fig. 1 is based on garnet optics leakage current sensor structural representation for the present invention.
Specific embodiment
Garnet optics leakage current sensor structural representation is based on as shown in Figure 1, and optics leakage current sensor is included：
Light source cell 10, detector unit 20, receiving unit 30.
Light source cell 10 contains light source portion 11 and the first lens 12, and light source portion 11 adopts low-power semiconductor laser, defeated
Go out optical maser wavelength 900nm-1700nm.The laser of the output of laser instrument 11 focuses on output by the first lens 12 and enters detector unit
20。
Detector unit 20 is by garnet module 21a, graphite 21b and 22 groups of tested module fitted successively from front to back
Into 302 area of graphite is more than 301 area of garnet module, garnet module 21a and graphite 21b composition induction modules 21, incident
Light reaches graphite 21b through garnet module 21a, and it is defeated that Jing graphite 21b reflections again pass through garnet module 21a formation reflected light
Go out.The leakage current of tested module can make the reflected light of output change, by detecting that the change of intensity of reflected light distribution is obtained
The information of leakage current.Incident illumination is 10 ° -150 ° with the angle of reflected light.The thickness range of the graphite is 10nm-5cm, according to
The leakage current of detection determines selected thickness.
Second lens 31 of the receiving unit 30 containing moveable position and optical receiver 32.The light of the output of detector unit 20 leads to
Cross after the second lens 31 are focused on and received by optical receiver 32.
Between second lens 31 and receptor 32, relative distance is adjustable, by the position for adjusting the second lens 31 and receptor 32
Putting makes received light quality to be measured optimal, is easy to observe and analyzes.
Induction module 21 is close on tested module 22, once tested module has leakage current to produce will cause reflected light
Change.
Light source portion 11 sends laser through the first lens 12, is reflected by induction module 21, and reflected light passes through lens 31, reaches
Receptor 32.
Claims (4)
1. it is a kind of to be based on garnet optics leakage current sensor, it is characterised in that single comprising laser instrument, the first lens, detection
Unit, the second lens and optical receiver, wherein detector unit are by the garnet module, graphite fitted successively from front to back and tested
Module is constituted, and graphite surface product is more than garnet module table area, garnet module and graphite composition induction module；
The laser of laser instrument output enters detector unit by the first lens focuss output, and incident illumination is reached through garnet module
Graphite, the reflection of Jing graphite again pass through garnet module and form reflection light output, and the light of detector unit output passes through the second lens
Received by optical receiver after focusing, optical receiver obtains the information of leakage current by detecting the change of intensity of reflected light distribution.
2. garnet optics leakage current sensor is based on according to claim 1, it is characterised in that the laser instrument is little
Power semiconductor laser, Output of laser wavelength 900nm-1700nm.
3. garnet optics leakage current sensor is based on according to claim 1, it is characterised in that the detector unit enters
The angle that light is penetrated with reflected light is 10 ° to 150 °.
4. garnet optics leakage current sensor is based on according to claim 1, it is characterised in that the thickness of the graphite
Scope 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 true CN106546867A (en) | 2017-03-29 |
| CN106546867B CN106546867B (en) | 2019-05-24 |
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| 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 |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764442A (en) * | 2017-09-29 | 2018-03-06 | 上海理工大学 | Reflective optic pressure sensor |
| CN107843367A (en) * | 2017-09-29 | 2018-03-27 | 上海理工大学 | Optical pressure sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253272A (en) * | 2011-04-29 | 2011-11-23 | 南京邮电大学 | Current measurement and protective sensor for high-voltage alternating current |
| CN103116057A (en) * | 2013-01-18 | 2013-05-22 | 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 |
-
2017
- 2017-01-10 CN CN201710015599.XA patent/CN106546867B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253272A (en) * | 2011-04-29 | 2011-11-23 | 南京邮电大学 | Current measurement and protective sensor for high-voltage alternating current |
| CN103116057A (en) * | 2013-01-18 | 2013-05-22 | 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 |
Non-Patent Citations (1)
| Title |
|---|
| TORU KATSUMATA, ETAL: "Development of sensor materials for fluorescence thermometer application using LED excitation", 《ICROS-SICE INTERNATIONAL JOINT CONFERENCE 2009》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764442A (en) * | 2017-09-29 | 2018-03-06 | 上海理工大学 | Reflective optic pressure sensor |
| CN107843367A (en) * | 2017-09-29 | 2018-03-27 | 上海理工大学 | Optical pressure sensor |
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| Publication number | Publication date |
|---|---|
| CN106546867B (en) | 2019-05-24 |
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Granted publication date: 20190524 Termination date: 20220110 |