CN102323521B - Helmet display - Google Patents
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- CN102323521B CN102323521B CN201110137450.1A CN201110137450A CN102323521B CN 102323521 B CN102323521 B CN 102323521B CN 201110137450 A CN201110137450 A CN 201110137450A CN 102323521 B CN102323521 B CN 102323521B
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- ultraviolet
- corona
- eyepiece
- object lens
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Abstract
The invention discloses a helmet display, which is applied to corona detection. The helmet display comprises an ultraviolet object lens, a solar-blind ultraviolet image intensifier, an ultraviolet optical filter, an optical fiber image transmission beam, an eyepiece and a spectroscope, wherein the ultraviolet object lens is used for picking up an optical signal of corona; the solar-blind ultraviolet image intensifier is connected with the ultraviolet object lens; the ultraviolet object lens is imaged on the detection surface of the solar-blind ultraviolet image intensifier; the ultraviolet optical filter is positioned between the ultraviolet object lens and the solar-blind ultraviolet image intensifier; the spectroscope is connected with the eyepiece; an included angle is formed between the spectroscope and an optical axis of the eyepiece; light reflected by the spectroscope enters human eyes; and a virtual image seen by the human eye and the corona are positioned at the same azimuth. The helmet display can be used for finding the corona phenomenon at night in time and can be worn when a power system is maintained so as to greatly avoid the loss of the power system; and the helmet display has the advantages of high detection efficiency, convenience in carrying, high accuracy and fewer influences from an outside environment.
Description
Technical field
The present invention relates to the manufacturing technology of Helmet Mounted Display, relate in particular to a kind of Helmet Mounted Display for corona detection.
Background technology
In recent years, China's economy continues high speed stable development, electric system scale also constantly expands, along with the enforcement of China's transferring electricity from the west to the east plan, transmission voltage grade progressively improves, the transmission line of electricity of 500kV and electric substation settle in succession in all parts of the country, and the widespread use of ehv power transmission system is safeguarded its safety, moved and more seem particularly important reliably.Corona discharge not only can seriously affect the person and device security, but also can cause a large amount of electric energy losses, therefore detect timely and accurately position and the power of corona discharge, so that corona discharge position is overhauled, to guaranteeing that the reliability service of electric system, the damage that prevents power equipment and minimizing personal injury have important meaning.
The generation of corona is because rough conductor produces inhomogeneous electric field, around inhomogeneous electric field, near the little electrode of radius-of-curvature, in the time that voltage is elevated to certain value, because free of air will discharge, forms corona.Because the peripheral electric field at corona is very weak, do not bump free, the peripheral charged particle of corona is substantially all electron ion, these ions have just formed corona discharge current.Briefly, the little conductor electrode of radius-of-curvature, to atmospherical discharges, has just produced corona.
Corona discharge in electric system makes a large amount of losses of electric energy, and the electromagnetic pulse of its generation can be disturbed radio and high-frequency communication, makes power equipment produce edge effect, destroys insulator, and then causes conductive line surfaces to be corroded, and declined to the serviceable life of wire.Therefore, only have the position of finding as early as possible corona discharge, could, to trouble unit on-call maintenance, reduce loss, avoid accident.
Traditional power transmission and transformation line is patrolled and examined main employing far infrared telescope, infrared camera or artificial visual inspection etc., but, the target of corona discharge is little, weak strength, visualization is more difficult, and in sunshine, contains very strong infrared ray, observes accuracy low with metascope, response speed is slow, adopt said method to be difficult to corona be detected timely, and then can not safeguard carrying out electric system in time, cause the loss that is difficult to avoid.Based on above reason, need a kind of equipment of being convenient to detect in time corona badly.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of Helmet Mounted Display, be applied to the detection of corona, this equipment can be found corona phenomenon timely, detection efficiency is high, and this Helmet Mounted Display is easy to carry, accuracy rate is high, be subject to the impact of external environment little, in to the maintenance process of electric system, also can wear simultaneously, has greatly avoided the loss of electric system.
For addressing the above problem, the embodiment of the present invention provides following technical scheme:
A kind of Helmet Mounted Display, is applied to corona detection, comprising:
Ultraviolet object lens, for absorbing the light signal of corona;
The day blind ultraviolet imaging enhancer being connected with described ultraviolet object lens, described ultraviolet object lens images on the test surface of described day blind ultraviolet imaging enhancer;
Ultraviolet filter between described ultraviolet object lens and described day blind ultraviolet imaging enhancer;
Optical fiber image transmission beam and eyepiece, the input face end of described optical fiber image transmission beam is connected with the output face of described day blind ultraviolet imaging enhancer, and its output face end is connected with described eyepiece, as the object plane of described eyepiece;
The spectroscope being connected with described eyepiece, the optical axis of described spectroscope and described eyepiece has angle, and the light after described spectroscope reflection enters human eye, and the virtual image of the corona that human eye is seen and described corona are positioned at same orientation, wherein, described eyepiece and human eye are positioned at spectroscopical the same side.
Preferably, described day blind ultraviolet imaging enhancer comprises:
With the ultraviolet detector that described ultraviolet object lens is connected, described ultraviolet object lens images on the test surface of described ultraviolet detector;
Gleam image intensifier, the input face of described gleam image intensifier is connected with the output face of described ultraviolet detector.
Preferably, the optical axis of described spectroscope and described eyepiece is 30 ° of-60 ° of angles.
Preferably, the optical axis of described spectroscope and described eyepiece is 45 ° of angles.
Preferably, the object distance of described ultraviolet object lens is 0.3m-infinite distance.
Preferably, the image distance of described eyepiece is 0.3m-infinite distance.
Preferably, the object distance of described ultraviolet object lens is 0.5m-infinite distance.
Preferably, the image distance of described eyepiece is 0.5m-infinite distance.
Preferably, described spectroscopical reflectivity is greater than transmissivity.
Compared with prior art, technique scheme has the following advantages:
The technical scheme that the embodiment of the present invention provides, Helmet Mounted Display is applied to the testing process of corona, this Helmet Mounted Display has utilized ultraviolet light " day is blind " characteristic, adopt the light signal of ultraviolet object lens picked-up corona, filter out the light signal of other wave band except day blind ultraviolet band by ultraviolet filter, adopt afterwards day blind ultraviolet imaging enhancer to carry out spectrum conversion enhancing to the light signal of the corona absorbing, be converted into the visible light signal that light intensity is stronger, make human eye can observe corona phenomenon, adopt afterwards optical fiber image transmission beam spectrum is changed and strengthen after the light signal of corona pass through eyepiece, form the virtual image of amplifying, light is entered human eye by spectroscope reflection afterwards, now, human eye just can be seen at corona discharge place the virtual image of corona.
Because the main day blind ultraviolet band that adopts carries out the detection of corona, be subject to external light influence very little, therefore human eye can be seen the virtual image of corona clearly, improve the Detection accuracy of corona, and because Helmet Mounted Display itself is easy to carry, only need be worn on head upper, thereby both hands are liberated, and, due to spectroscopical use, when making wearer see corona, also do not affect and normally look thing, maintainer can wear at any time this Helmet Mounted Display and carry out service work, thereby can find timely corona phenomenon and overhaul timely, avoid greatly the loss of electric system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed Helmet Mounted Display of the embodiment of the present invention.
Embodiment
Just as described in the background section, adopt observation method of the prior art, be difficult to find timely corona phenomenon, the present inventor studies discovery, the reasons for the above problems are, because the corona discharge initial stage can only produce the photon of little amount, be that luminous intensity is very weak, cause being difficult to observe at corona discharge initial stage naked eyes, in the time that naked eyes can be seen corona discharge situation, often the damage of power equipment is very serious, in addition, although adopt the infrared equipments such as infrared telescope and infrared camera also can detect corona fault, but because solar radiation is very strong, in the picture that adopts infrared equipment to detect, contain strong infrared background, thereby cause being difficult to corona phenomenon be detected at infrared band, in addition due to infrared equipment actual detection to be fever phenomenon, in the time corona phenomenon being detected, power circuit or equipment are because of corona well damage.
In addition, wavelength coverage when corona discharge is probably between 230nm-405nm, wherein comprise a day blind ultraviolet band, so-called day blind ultraviolet band refer to can through in the ultraviolet light of atmospheric solar radiation by the ultraviolet band of the strong absorption of the ozonosphere of 40-60 kilometer, that is to say, under ozonosphere, in the ultraviolet light of solar radiation, the ultraviolet light of this wave band has almost been absorbed completely, and content is almost equal to zero, and this phenomenon is also referred to as " day is blind " characteristic of ultraviolet light.Based on this, at blind ultraviolet band of day, because the UV radiation of observed object is better than the UV radiation of the sun, so observed object is easy to be revealed.
Based on above reason, inventor considers, can utilize " day is blind " characteristic of the ultraviolet light of solar radiation, designing corresponding detection system surveys timely and follows the tracks of corona discharge phenomenon, simultaneously, due to features such as itself helmet detection system are easy to carry, inventor thinks can use for reference " day blind " characteristic of ultraviolet light in helmet detection system, so that observe timely corona phenomenon.
On basis based on above-mentioned research, the embodiment of the present invention provides a kind of Helmet Mounted Display that is applied to corona detection, comprising:
Ultraviolet object lens, for absorbing the light signal of corona;
The day blind ultraviolet imaging enhancer being connected with described ultraviolet object lens, described ultraviolet object lens images on the test surface of described day blind ultraviolet imaging enhancer;
Ultraviolet filter between described ultraviolet object lens and described day blind ultraviolet imaging enhancer;
Optical fiber image transmission beam and eyepiece, the input face end of described optical fiber image transmission beam is connected with the output face of described day blind ultraviolet imaging enhancer, and its output face end is connected with described eyepiece, as the object plane of described eyepiece;
With the spectroscope that described eyepiece is connected, the optical axis of described spectroscope and described eyepiece has angle, and the light after described spectroscope reflection enters human eye, and the virtual image of the corona that human eye is seen and described corona are positioned at same orientation.
The Helmet Mounted Display that the embodiment of the present invention provides, utilize " day is blind " characteristic of ultraviolet light, adopt the light signal of ultraviolet object lens picked-up corona, filter out the light signal of other wave band except day blind ultraviolet band by ultraviolet filter, adopt afterwards day blind ultraviolet imaging enhancer to carry out spectrum conversion enhancing to the light signal of the corona absorbing, be converted into the visible light signal that light intensity is stronger, make human eye can observe corona phenomenon, adopt afterwards optical fiber image transmission beam spectrum is changed and strengthen after the light signal of corona pass through eyepiece, form the virtual image of amplifying, light is entered human eye by spectroscope reflection afterwards, now, human eye just can be seen at corona discharge place the virtual image of corona.
Because the main day blind ultraviolet band that adopts carries out the detection of corona, be subject to external light influence very little, therefore human eye can be seen the virtual image of corona clearly, improve the Detection accuracy of corona, and because Helmet Mounted Display itself is easy to carry, only need be worn on head upper, thereby both hands are liberated, and, due to spectroscopical use, when making wearer can see the corona virtual image, also do not affect and normally look thing, maintainer can wear at any time this Helmet Mounted Display and carry out service work, thereby can find timely corona phenomenon and overhaul timely, avoid greatly the loss of electric system.
It is more than the application's core concept, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A lot of details are set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, in the time that the embodiment of the present invention is described in detail in detail; for ease of explanation; represent that the sectional view of device architecture can disobey general ratio and do local amplification, and described schematic diagram is example, it should not limit the scope of protection of the invention at this.In addition in actual fabrication, should comprise, the three-dimensional space of length, width and the degree of depth.
The Helmet Mounted Display that the embodiment of the present invention provides can be applicable to the testing process of corona, and its structural representation as shown in Figure 1, comprising:
The day blind ultraviolet imaging enhancer being connected with described ultraviolet object lens 11, described ultraviolet object lens 11 images on the test surface of described day blind ultraviolet imaging enhancer, this day blind ultraviolet imaging enhancer can carry out the light signal of the corona of picked-up spectrum conversion and strengthen the intensity of light signal, the light signal of corona weak light intensity is converted to the visible light signal that light intensity is stronger, makes human eye can observe corona discharge phenomenon;
Ultraviolet filter 12 between described ultraviolet object lens 11 and described day blind ultraviolet imaging enhancer, to filter out the light signal of other wave band except day blind ultraviolet band, reduce the light signal of other wave band to the impact of testing result, absorb to greatest extent the light signal in blind ultraviolet band of day in the light signal of corona, so that subsequent treatment;
Optical fiber image transmission beam 15 and eyepiece 16, the input face end of described optical fiber image transmission beam 15 is connected with the output face of described day blind ultraviolet imaging enhancer, its output face end is connected with described eyepiece 16, as the object plane of described eyepiece 16, optical fiber image transmission beam 15 in the present embodiment for by through day blind ultraviolet imaging enhancer carry out spectrum conversion and strengthen after optical signal transmission to the object plane of eyepiece 16, so that the imaging of corona, after described eyepiece 16, forms the virtual image of the amplification of corona;
With the spectroscope 17 that described eyepiece 16 is connected, described spectroscope 17 has angle with the optical axis of described eyepiece 16, and the light after described spectroscope 17 reflections enters human eye, and the virtual image of the corona that human eye is seen and described corona are positioned at same orientation.
Described optical fiber image transmission beam 15 is the fibre bundles that are together made up of multifiber stationary arrangement, it can be by the image planes with certain area by every optical fiber, pointwise picture is reached to the other end by one end of fibre bundle, and middle no longer through being similar to the such signal conversion process of optical communication.In the present embodiment, twisted fiber coherent fiber bundle 15 be can pass through, the upright of the virtual image that eyepiece 16 becomes and handstand situation changed.
Described spectroscope 17 is also referred to as semi-transparent semi-reflecting lens, the light of processing through eyepiece 16 can be reflected and enters human eye, so that human eye is seen the virtual image of corona at corona discharge place, be about to overlap with the background of actual generation corona discharge through the virtual image of this Helmet Mounted Display corona after treatment, to reach the object of seeing the virtual image of corona in actual electrical corona place, with the accuracy rate that guarantees to survey.And, due to the use of spectroscope 17, in making human eye can see the corona virtual image, also do not affect and normally look thing, maintainer can wear at any time this Helmet Mounted Display and carry out service work, thereby can find timely corona phenomenon and overhaul timely, having avoided greatly the loss of electric system.
Wherein, described day blind ultraviolet imaging enhancer comprises:
The ultraviolet detector 13 being connected with described ultraviolet object lens, described ultraviolet object lens 11 images on the test surface of described ultraviolet detector 13, that is to say, and the test surface of described ultraviolet detector 13 is the test surface of described day blind ultraviolet imaging enhancer;
Gleam image intensifier 14, the input face of described gleam image intensifier 14 is connected with the output face of described ultraviolet detector 13.
What obtain at the test surface of ultraviolet detector 13 is the real image of corona, now, intensity through the light signal of the corona of ultraviolet detector 13 is still very weak, human eye is difficult to observe, therefore, connect a gleam image intensifier 14 in the output face of ultraviolet detector 13, amplify with the intensity of the light signal to corona, so that follow-up observation.
It should be noted that, in the present embodiment, do not limit the size of the angle of spectroscope 17 and eyepiece 16 optical axises, as long as can make the light after spectroscope 17 reflections can enter human eye, concrete angle can be adjusted according to the concrete ornaments position of each parts in helmet-mounted display system, preferably, described spectroscope 17 is 30 ° of-60 ° of angles with the optical axis of described eyepiece 16, preferred, and described spectroscope 17 is 45 ° of angles with the optical axis of described eyepiece 16.
Because the light intensity of described corona discharge is very little, even the light intensity of the corona after gleam image intensifier 14 strengthens can be not too yet higher than the normal light intensity of solar radiation on daytime, therefore, preferred, the reflectivity of spectroscope 17 described in the present embodiment should be greater than transmissivity.Certainly, can be according to actual detection needs, the reflectivity of suitable adjustment spectroscope 17, to control material object that human eye observes and the brightness ratio of the virtual image.
And, in the present embodiment for the ease of the detection to corona, and detecting after corona discharge and can keep in repair in time, preferably, the object distance of ultraviolet object lens 11 described in the present embodiment is 0.3m-infinite distance, and the image distance of described eyepiece 16 is 0.3m-infinite distance, preferred, the object distance of described ultraviolet object lens 11 is 0.5m-infinite distance, and the image distance of described eyepiece 16 is 0.5m-infinite distance.
In sum, the Helmet Mounted Display that the embodiment of the present invention provides, utilize " day is blind " characteristic of ultraviolet light, adopt the light signal of ultraviolet object lens picked-up corona, filter out the light signal of other wave band except day blind ultraviolet band by ultraviolet filter, adopt afterwards day blind ultraviolet imaging enhancer to carry out spectrum conversion enhancing to the light signal of the corona absorbing, be converted into the visible light signal that light intensity is stronger, make human eye can observe corona phenomenon, adopt afterwards optical fiber image transmission beam spectrum is changed and strengthen after the light signal of corona pass through eyepiece, form the virtual image of amplifying, light is entered human eye by spectroscope reflection afterwards, now, human eye just can be seen at corona discharge place the virtual image of corona.
Because the main day blind ultraviolet band that adopts carries out the detection of corona, be subject to external light influence very little, therefore human eye can be seen the virtual image of corona clearly, improve the Detection accuracy of corona, and because ultraviolet helmet display itself is easy to carry, only need be worn on head upper, thereby both hands are liberated, and, due to spectroscopical use, when making wearer can see the corona virtual image, also do not affect and normally look thing, maintainer can wear at any time this Helmet Mounted Display and carry out service work, thereby can find timely corona phenomenon and overhaul timely, avoid greatly the loss of electric system.
And, owing to adopting a day blind ultraviolet band to carry out the detection of corona in the present embodiment, therefore, under the weather condition in daylight, greasy weather, still can normally work, accurately location, the fault routine that is applicable to high-voltage transforming system and transmission line of electricity etc. completely detects.
What in the embodiment of the present invention, describe in detail is only the light path part of this Helmet Mounted Display, it will be appreciated by those skilled in the art that, between above-mentioned each optical element, be interconnective by certain physical construction, and, except light path part, this Helmet Mounted Display also should comprise circuit part, is used to each element power supply, as is circuit and the power supply of the power supplies such as ultraviolet object lens, eyepiece, image intensifier.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a Helmet Mounted Display, is applied to corona detection, it is characterized in that, comprising:
Ultraviolet object lens, for absorbing the light signal of corona;
The day blind ultraviolet imaging enhancer being connected with described ultraviolet object lens, described ultraviolet object lens images on the test surface of described day blind ultraviolet imaging enhancer;
Ultraviolet filter between described ultraviolet object lens and described day blind ultraviolet imaging enhancer;
Optical fiber image transmission beam and eyepiece, the input face end of described optical fiber image transmission beam is connected with the output face of described day blind ultraviolet imaging enhancer, and its output face end is connected with described eyepiece, as the object plane of described eyepiece;
The spectroscope being connected with described eyepiece, the optical axis of described spectroscope and described eyepiece has angle, and the light after described spectroscope reflection enters human eye, and the virtual image of the corona that human eye is seen and described corona are positioned at same orientation, wherein, described eyepiece and human eye are positioned at spectroscopical the same side.
2. Helmet Mounted Display according to claim 1, is characterized in that, within described day, blind ultraviolet imaging enhancer comprises:
With the ultraviolet detector that described ultraviolet object lens is connected, described ultraviolet object lens images on the test surface of described ultraviolet detector;
Gleam image intensifier, the input face of described gleam image intensifier is connected with the output face of described ultraviolet detector.
3. Helmet Mounted Display according to claim 2, is characterized in that, the optical axis of described spectroscope and described eyepiece is 30 ° of-60 ° of angles.
4. Helmet Mounted Display according to claim 3, is characterized in that, the optical axis of described spectroscope and described eyepiece is 45 ° of angles.
5. Helmet Mounted Display according to claim 1, is characterized in that, the object distance of described ultraviolet object lens is 0.3m-infinite distance.
6. Helmet Mounted Display according to claim 5, is characterized in that, the image distance of described eyepiece is 0.3m-infinite distance.
7. Helmet Mounted Display according to claim 5, is characterized in that, the object distance of described ultraviolet object lens is 0.5m-infinite distance.
8. Helmet Mounted Display according to claim 7, is characterized in that, the image distance of described eyepiece is 0.5m-infinite distance.
9. according to the Helmet Mounted Display described in claim 1-8 any one, it is characterized in that, described spectroscopical reflectivity is greater than transmissivity.
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| CN201110137450.1A CN102323521B (en) | 2011-05-23 | 2011-05-23 | Helmet display |
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| CN201110137450.1A CN102323521B (en) | 2011-05-23 | 2011-05-23 | Helmet display |
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| CN102323521A CN102323521A (en) | 2012-01-18 |
| CN102323521B true CN102323521B (en) | 2014-05-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IL125412A (en) * | 1998-07-20 | 2005-11-20 | Ifil Ltd | Solar blind uv viewing apparatus and camera |
| JP4529624B2 (en) * | 2004-01-27 | 2010-08-25 | Ｊｆｅスチール株式会社 | Discharge detection device |
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| CN1664649A (en) * | 2005-02-23 | 2005-09-07 | 北京理工大学 | Novel optical system of helmet display unit |
| CN201293905Y (en) * | 2008-11-20 | 2009-08-19 | 广州星博科仪有限公司 | Ultraviolet digital camera>)} |
| CN201335863Y (en) * | 2008-12-12 | 2009-10-28 | 成都博高科技有限责任公司 | Electric corona detection instrument |
| CN101706548A (en) * | 2009-11-06 | 2010-05-12 | 宁波大学 | Optical detection device for corona discharge |
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