CN203616003U - UV detector based on UV photoelectric tube - Google Patents
UV detector based on UV photoelectric tube Download PDFInfo
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- CN203616003U CN203616003U CN201320791670.0U CN201320791670U CN203616003U CN 203616003 U CN203616003 U CN 203616003U CN 201320791670 U CN201320791670 U CN 201320791670U CN 203616003 U CN203616003 U CN 203616003U
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- photoelectric tube
- ultraviolet
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- driving circuit
- tube driving
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Abstract
The utility model relates to a UV detector based on a UV photoelectric tube. The UV detector comprises the UV photoelectric tube, a photoelectric tube driving circuit, a signal processing circuit, a display terminal and a power supply module. UV light radiation generated by corona discharge enters the UV photoelectric tube, the UV photoelectric tube is switched on, the UV photoelectric tube is connected with the photoelectric tube driving circuit in series, the photoelectric tube driving circuit generates pulse output, pulse signals are sent to the processing circuit, processed by the processing circuit and then sent to the display terminal for display, and the power supply module supplies required power to the photoelectric tube driving circuit, the signal processing circuit and the display terminal. Traditional optical filters and complex optical path channels are not required, application of the UV detector is very flexible and simple, the UV photoelectric tube is widely sensitive, and thus weak UV electromagnetic wave signals radiated by corona which is generated surrounding high-voltage power equipment or high-voltage transmission lines can be rapidly and reliably detected.
Description
Technical field
The utility model relates to a kind of analysis and survey control technology, particularly a kind of ultraviolet detector based on UV photoelectric tube.
Background technology
Electric device high-tension apparatus long-time running work, inevitably occurs that apparatus insulated property declines, and has partial discharge phenomenon, thereby causes power attenuation or power failure, and its harm is huge.Therefore necessaryly efficiently effluve fault is detected, ensure the stable operation of electric device.
Ultraviolet detector can detect and locate the corona discharge of high voltage electric power equip ment accurately.Corona discharge gives off a large amount of ultraviolet rays, in the sun our None-identified with the naked eye.Can collect corona discharge image with special ultraviolet camera, and then ultraviolet image and visible ray background are merged to the object that reaches location corona point.Used day blind ultraviolet monitoring technology of single channel corona discharge ultraviolet detector is the domestic novel fault detection technique growing up in recent years.Ultraviolet wavelength coverage is 200～400 nm, visible wavelength range 400～700 nm.Consider and in sunshine, also contain ultraviolet light, and there is the overlapping of part with the ultraviolet light that corona discharge produces, because the ozonosphere of the earth has absorbed the ultraviolet ray of a part of wavelength, in fact being radiated ground solar ultraviolet wavelength mostly more than 280nm, is solar blind lower than the range of wavelengths of 280nm.Therefore when ultraviolet imagery detects, select 240---280nm wave band, can avoid the interference of sunshine, reach the object of determining corona position and intensity, there are good antijamming capability and monitoring sensitivity.
This however domestic and international existing ultraviolet detection technique mainly adopts dual channel mode, device need to adopt two path channels, two CCD gather, required Development and Production cost is higher.For the detection occasion of some non-strict demand high precision scopes, cost performance is not high.
Summary of the invention
The utility model is the problem not high for ultraviolet detector cost performance, has proposed a kind of ultraviolet detector based on UV photoelectric tube, for detection of and locate high-tension apparatus trouble spot.The ultraviolet detector that adopts UV photoelectric tube to build greatly reduces the Development and Production cost of product of the same type, under certain accuracy requirement, can reach best cost performance.
The technical solution of the utility model is: a kind of ultraviolet detector based on UV photoelectric tube, comprise ultraviolet phototube, photoelectric tube driving circuit, signal processing circuit, display terminal and power module, the ultraviolet radiation that corona discharge produces enters ultraviolet phototube, ultraviolet phototube conducting, ultraviolet phototube is serially connected in photoelectric tube driving circuit, photoelectric tube driving circuit produces pulse output, pulse signal send display terminal to show after sending processing circuit processes, and power module provides required power supply to photoelectric tube driving circuit, signal processing circuit and display terminal.
Described photoelectric tube driving circuit comprises inverter, rectification circuit, RC filtering circuit and output circuit, the low-tension supply that power module provides becomes alternating current through inverter, alternating current is connected in series ultraviolet phototube after sending into the filtering of RC filtering circuit after by rectification circuit rectification, and ultraviolet phototube is exported after by output circuit adjustment.
The beneficial effects of the utility model are: the ultraviolet detector of the utility model based on UV photoelectric tube, need not add traditional optical filter and complicated path channels, and application is very flexibly with easy.Although the small volume of ultraviolet phototube, but it has very wide-angle susceptibility (directive property), and can be rapid, high voltage electric power equip ment or the high voltage transmission line faint ultraviolet electromagnetic wave signal that the corona of generation gives off detected reliably around.
Accompanying drawing explanation
Fig. 1 is ultraviolet phototube side angle sensitivity figure;
Fig. 2 is ultraviolet phototube end face angle sensitivity figure;
Fig. 3 is the spectrum character diagram of R9454 ultraviolet phototube;
Fig. 4 is the ultraviolet detector block diagram of the utility model based on UV photoelectric tube;
Fig. 5 is photoelectric tube driving circuit figure in the ultraviolet detector of the utility model based on UV photoelectric tube;
Fig. 6 is the fundamental diagram of ultraviolet phototube.
Embodiment
Utilize metal photoelectric effect and the gas multiplier effect principle of ultraviolet phototube, only to the spectrum sensitive between 185nm～260nm, in the time having the ultraviolet radiation photoelectric tube of UVC wave band, photoelectric tube conducting, have pulse voltage and produce, allow by the effect of electric capacity level and smooth that the potential pulse of output becomes.After capacitor discharge, then give rapidly capacitor charging by power supply, when the corona discharge ultraviolet radiation that has again a power equipment is during to photoelectric tube, electric capacity starts to discharge again.
This device is mainly made up of ultraviolet phototube, photoelectricity driving circuit and oscillograph.Wherein ultraviolet phototube is a kind of ultraviolet detecting sensor, very faint UV radiation signal (1pw) can be detected, as Fig. 1 ultraviolet phototube side angle sensitivity figure and Fig. 2 ultraviolet phototube end face angle sensitivity figure, day blind characteristic, does not respond visible ray and infrared light, as shown in Figure 3 the spectrum character diagram of R9454 ultraviolet phototube, fast response time (several milliseconds), low current operation, small volume and less weight, R9454 ultraviolet phototube parameter as shown in table 1.
Table 1
| Parameter | R9454 | Unit |
| Spectral response | 185～260 | nm |
| Glass material | Uviol | ? |
| Weight | Approximately 1.5 | g |
| Supply voltage | 300-350 | V |
| Current peak | 30 | mA |
| Average discharge current | 1 | mA |
| Running temperature | -20～+60 | ℃ |
| Discharge inception voltage (having ultraviolet light) (direct current) (25 ℃) | 280 | V |
| Recommended operational voltage (25 ℃) | 300-350 | V |
Ultraviolet detector block diagram based on UV photoelectric tube as shown in Figure 4, device comprises ultraviolet phototube, photoelectric tube driving circuit, signal processing circuit, liquid crystal display and power module, the ultraviolet radiation that corona discharge produces enters ultraviolet phototube, ultraviolet phototube conducting, photoelectric tube driving circuit produces pulse output, pulse signal send display terminal to show after sending processing circuit processes, and power module provides required power supply to photoelectric tube driving circuit, signal processing circuit and liquid crystal display.
Ultraviolet light is produced by corona discharge assembly, and corona discharge assembly adopts the two-sided glass-fiber-plate of 1.6mm, and comparatively robust is durable, four jiaos of band mounting holes, and convenient installation fixed.It is each a pair of that element mainly comprises electromagnetic oven electric capacity, each one of colour TV high voltage package, ferrocart core magnet ring, three nose end, two nose ends, and its middle magnetic ring winding turns is 30 circles left and right.Power is larger, can steady operation.After welding, the electric discharge of the needle point at analog insulation fault place is used for as detected source.Oscillograph, as display terminal, in the time having square-wave pulse, has illustrated that corona discharge produces, and electric arc, air breakdown, constantly gives off to surrounding the ultraviolet ray that comprises non-solar-blind band.Pulse be photoelectric tube in the ultraviolet ray that is subject to corona discharge radiation, by driving circuit, through conditioning after produce square-wave pulse.Square wave not only can be verified and whether have corona discharge, and the frequency of pulse can obtain corona discharge power.
Chief component in this device is exactly photoelectric tube driving circuit, photoelectric tube driving circuit figure as shown in Figure 5, for after to make mobile power supply equipment convenient, working power can be used dry cell, or for long-time outdoor detection, can power to photoelectric tube by solar battery group.As the principle of work of Fig. 6 ultraviolet phototube, UV photoelectric tube needs the driving DC voltage of 325 ± 25V, must use DC-AC-DC converting.Inverter U1 input terminal voltage is 3.3V.The output of inverter is the rectification circuit of the diode composition of four withstand voltage 1000V immediately, to ac voltage rectifier.C is passed through in rectification later
1and R
1, R
2the RC circuit filtering forming.By changing R
1and R
2large I the voltage of photoelectric tube both sides is transferred to operating voltage.In the time having the ultraviolet radiation photoelectric tube of UVC wave band, photoelectric tube conducting, has a C
2the pulse voltage providing produces, and passes through capacitor C
3effect allow level and smooth that the potential pulse of output becomes.C
2after electric discharge, then give rapidly C by power supply
2charging, when the corona discharge ultraviolet radiation that has again a power equipment is during to photoelectric tube, C
2start again electric discharge.
The image obtaining from oscillograph, corona unit is placed on respectively the distance different from photoelectric tube, has recorded the pulse signal that under different distance, system and device produces, and the lower pulse diagram of each distance looks like to compare.Collected by oscillograph to pulsed frequency along with detect distance variation and change, detect distance larger, corona discharge is more weak, ultraviolet ray intensity is more weak, the frequency of the square-wave pulse detecting is lower.Verify the feasibility of device herein.
Claims (2)
1. the ultraviolet detector based on UV photoelectric tube, it is characterized in that, comprise ultraviolet phototube, photoelectric tube driving circuit, signal processing circuit, display terminal and power module, the ultraviolet radiation that corona discharge produces enters ultraviolet phototube, ultraviolet phototube conducting, ultraviolet phototube is serially connected in photoelectric tube driving circuit, photoelectric tube driving circuit produces pulse output, pulse signal send display terminal to show after sending processing circuit processes, and power module provides required power supply to photoelectric tube driving circuit, signal processing circuit and display terminal.
2. the ultraviolet detector based on UV photoelectric tube according to claim 1, it is characterized in that, described photoelectric tube driving circuit comprises inverter, rectification circuit, RC filtering circuit and output circuit, the low-tension supply that power module provides becomes alternating current through inverter, alternating current is connected in series ultraviolet phototube after sending into the filtering of RC filtering circuit after by rectification circuit rectification, and ultraviolet phototube is exported after by output circuit adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791670.0U CN203616003U (en) | 2013-12-03 | 2013-12-03 | UV detector based on UV photoelectric tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791670.0U CN203616003U (en) | 2013-12-03 | 2013-12-03 | UV detector based on UV photoelectric tube |
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| Publication Number | Publication Date |
|---|---|
| CN203616003U true CN203616003U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320791670.0U Expired - Fee Related CN203616003U (en) | 2013-12-03 | 2013-12-03 | UV detector based on UV photoelectric tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527551A (en) * | 2015-12-31 | 2016-04-27 | 成都旭光光电技术有限责任公司 | Micro electric spark detector |
| CN110988773A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Verification comparison method of ultraviolet imager |
| CN110988772A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Check-up comparison circuit of ultraviolet imager |
| CN113009294A (en) * | 2021-02-25 | 2021-06-22 | 西安交通大学 | Non-lens discharge positioning device and method |
-
2013
- 2013-12-03 CN CN201320791670.0U patent/CN203616003U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527551A (en) * | 2015-12-31 | 2016-04-27 | 成都旭光光电技术有限责任公司 | Micro electric spark detector |
| CN110988773A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Verification comparison method of ultraviolet imager |
| CN110988772A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Check-up comparison circuit of ultraviolet imager |
| CN113009294A (en) * | 2021-02-25 | 2021-06-22 | 西安交通大学 | Non-lens discharge positioning device and method |
| CN113009294B (en) * | 2021-02-25 | 2022-05-03 | 西安交通大学 | Non-lens discharge positioning device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |