CN110026389A - A kind of CO based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus - Google Patents
A kind of CO based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus Download PDFInfo
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- CN110026389A CN110026389A CN201910198870.7A CN201910198870A CN110026389A CN 110026389 A CN110026389 A CN 110026389A CN 201910198870 A CN201910198870 A CN 201910198870A CN 110026389 A CN110026389 A CN 110026389A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0804—Catadioptric systems using two curved mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0864—Catadioptric systems having non-imaging properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- General Physics & Mathematics (AREA)
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Abstract
To solve, the overlap joint foreign matter reset mode safety of conventional high-tension electric wire is low, maintenance cost is high, elimination efficiency is low and existing CO2Laser ablation easy device be not suitable for remote or foreign matter it is smaller when removing the technical issues of, the present invention provides a kind of CO based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus.CO is realized using coaxial light splitting microscope group2Laser beam expanding focusing system, visible light camera and three tunnel of laser ranging system are coaxial, CO2Laser beam expanding focusing system is based on double off axis paraboloid mirror microscope groups, and non-stop layer blocks, and lightweight and can meet heavy caliber use demand；The optical axis and CO of visible light camera2The optical axis of laser beam expanding focusing system keeps coaxial, it can be ensured that ablation effect is best；The optical axis and CO of range-measurement system2The optical axis of laser beam expanding focusing system keeps coaxial, it can be ensured that when adjusting focusing negative lens, realizes CO2The remote focusing of laser；The search, capture and locking of foreign matter target are able to achieve using visible light camera combination Two Dimensional Rotating mechanism.
Description
Technical field
The present invention relates to a kind of optical non-contact CO2Laser ablation apparatus, and in particular to one kind is based on double off-axis parabolics
The CO of face microscope group2Laser ablation apparatus can be used for the removing of high voltage transmission line foreign matter, it is different to be particularly suitable for remote high voltage transmission line
Object is removed.
Background technique
High pressure and extra-high voltage grid are the important physical conduction nets that remote large-scale electric energy conveying is carried out in electric system
Network.Power transmission electric network uses a plurality of high pressure, super-pressure physics cable, and insulated aerial is between 20m~100m high pylon.Due to
In the natural environment, objective nature or artificial origin usually make the non-metal foreign bodies such as plastics be overlapped on electricity for cable exposure throughout the year
On the electrical network facilities such as cable, pylon, insulator.Insulating properties between high-tension electricity cable is caused to be deteriorated, there are initiation power line short-circuits
The hidden danger of the failures such as tripping is one of the significant threat that current electric system runs well.
Usual high-voltage fence is in Transmission Line Design, and all there are fixed safe spacings between conducting wire and conducting wire.Normally
In the case of, as long as keeping this air gap between conducting wire, overhead transmission line can be safely operated.If existing between electric wire
Nonisulated object, such as kite string, balloon, plastic cloth other than air etc. easily cause short circuit between line and line, so that power transformation
It stands switch trip.Common foreign matter is the non-metal articles such as kite, balloon, once overlapping between high line power grid, transmission line of electricity will
Tripping leads to electric network fault at once.Even if foreign matter insulating properties is higher, in rainy day or big air humidity, electric current is also possible to lead to
Rainwater (or steam) disruptive discharge is crossed, electric network fault is caused.
The main method of traditional removing high-tension bus-bar overlap joint foreign matter has two major classes: first is that after having a power failure in electrician or robot
Line is extractd；Second is that Equipotential live working is extractd.Both methods requires to put into more human and material resources, and operation procedure
Complicated, time length, great work intensity, safety are low.Even if using the unartificial means such as robot, current removing cable foreign matter
Used time is still longer.To the safe operation of power grid, there are certain prestige in the case where network live for the automation equipments such as robot
The side of body and use of robot, maintenance cost are higher, it is difficult to large-scale promotion application.
The principle that laser clears up foreign matter on cable is to emit laser on the ground, and the accurate laser azimuth that controls keeps its radiation different
Object surface, by radiant section due to absorbing laser energy to which temperature increases, final burning falls off foreign matter, reaches cleaning foreign matter
Purpose.Foreign matter on cable is generally nonmetallic materials, CO2Laser can in the case where burning most foreign matters,
Metallic cable is not caused to damage.Existing CO2Laser ablation easy device needs artificial aiming foreign matter, is not suitable for remote
Or foreign matter it is smaller when removing.
Summary of the invention
Based on background above, to solve, the overlap joint foreign matter reset mode safety of conventional high-tension electric wire is low, maintenance cost is high, clear
Except low efficiency and existing CO2The technology of removing when laser ablation easy device is not suitable at a distance or foreign matter is smaller is asked
Topic, the present invention provides a kind of CO based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus.
The technical solution of the invention is as follows:
A kind of CO based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus is characterized in that including CO2Laser expands
Beam focusing system, coaxial light splitting microscope group, visible light camera, range-measurement system, Two Dimensional Rotating mechanism and display and control terminal；CO2Laser
It expands focusing system, visible light camera, range-measurement system and coaxial light splitting microscope group and is packaged in one, be set to Two Dimensional Rotating mechanism
On；
CO2Laser beam expanding focusing system includes CO2Laser and CO2Laser beam expanding focuses Catadioptric system；
CO2It is the catadioptric infrared optics system of the cascade Galilean telescope pattern of multiple groups that laser beam expanding, which focuses Catadioptric system,
System, including lens group and double off axis paraboloid mirror microscope groups, double off axis paraboloid mirror microscope groups and lens group are to be without coke without burnt or approximation
System；
Lens group includes the focusing negative lens and positive lens set gradually；Focusing negative lens is expanded with positive lens composition
System, focusing negative lens are arranged in CO2On the emitting light path of laser, lens group is expanded with double off axis paraboloid mirror microscope group compositions
Focusing system；The position of focusing negative lens is adjustable；
The coaxial light splitting microscope group is set on the emitting light path of double off axis paraboloid mirror microscope groups；
Coaxial light splitting microscope group includes main road spectroscope disposed in parallel and two-way spectroscope, and main road spectroscope and two-way are divided
Plating is formed with bi-color branch light film on mirror；Double-colored spectro-film on main road spectroscope, to CO2Laser light, to visible light and ranging
Laser reflection；Double-colored spectro-film on two-way spectroscope penetrates range laser, to visible reflectance；
Main road spectroscope is arranged on the emitting light path of double off axis paraboloid mirror microscope groups；Main road spectroscope is defined far from double off-axis
The face of paraboloid microscope group is the first mirror surface, and two-way spectroscope is arranged on the reflected light path of the first mirror surface；
The optical axis of visible light camera is parallel with the outgoing beam optical axis of double off axis paraboloid mirror microscope groups；Define two-way spectroscope
It is the second mirror surface towards the spectroscopical face of main road, it is seen that light position for video camera is on the reflected light path of second mirror surface；
Range-measurement system is located on the transmitted light path of second mirror surface；
Display and control terminal includes display terminal and control executor；
Control executor and CO2Laser beam expanding focusing system, visible light camera, range-measurement system and Two Dimensional Rotating mechanism are equal
It is connected, is used for: adjusts the orientation and pitching of Two Dimensional Rotating mechanism；It will be seen that image and range-measurement system acquired in light video camera
The ranging data of output is sent to display terminal；The focusing negative lens in lens group is carried out according to the ranging data of range-measurement system
Position is adjusted to control CO2Locking of the laser beam expanding focusing system to ablation target, laser ablation；Monitor ablation process.
Further, the F number of double off axis paraboloid mirror microscope groups and lens group is respectively less than 4.
Further, double off axis paraboloid mirror microscope groups include the main off axis paraboloidal mirror of large scale and the off-axis throwing of small size time
Object plane mirror, small size time off axis paraboloidal mirror are arranged on the emitting light path of lens group, the main off axis paraboloidal mirror setting of large scale
On the emitting light path of small size time off axis paraboloidal mirror；The main off axis paraboloidal mirror of large scale and small size time off axis paraboloidal mirror
Mirror surface diameter proportion meet so that double off axis paraboloid mirror microscope groups shrink beam ratio be 3:1.
Further, the mirror surface diameter D of the main off axis paraboloidal mirror of the large scale1Minimum value according to formulaIt determines；In formula, Lm is the farthest operating distance of laser ablation, and d ' is entire CO2The diffraction of laser ablation apparatus
Limited spot size.
Further, the CO2Laser is continuous or high power pulsed ion beams CO2Laser, power are not less than 100W.
Further, the double-colored spectro-film on main road spectroscope, to CO2The transmitance of laser is greater than 98%, to visible light
And the reflectivity of range laser is greater than 99%；Double-colored spectro-film on two-way spectroscope, is greater than the transmitance of range laser
99%, 99% is greater than to the reflectivity of visible light.
Further, Two Dimensional Rotating mechanism is that azimuth and pitching angular accuracy are superior to 5 " precision rotating mechanism.
Further, Two Dimensional Rotating mechanism has the function of to manually adjust.
Further, lens group uses transmissive CO2The Ge material of laser is made.
Further, it is seen that light video camera has zoom function, can be to distant object blur-free imaging, and can be to current
Lock onto target carries out frame choosing.
Beneficial effects of the present invention:
1. the present invention realizes CO using coaxial light splitting microscope group2Laser beam expanding focusing system, visible light camera and laser
Three tunnel of range-measurement system is coaxial, CO2Laser beam expanding focusing system is based on double off axis paraboloid mirror microscope groups, and non-stop layer blocks, lightweight and can
Meet heavy caliber use demand；CO2CO in laser beam expanding focusing system2Laser beam expanding focuses Catadioptric system using gal benefit
Slightly the catadioptric infrared optical system of telescope pattern avoids the laser point for occurring high-energy in system without intermediate picture point；Visible light
The optical axis and CO of camera2The optical axis of laser beam expanding focusing system keeps coaxial, it can be ensured that ablation effect is best；Range-measurement system
Optical axis and CO2The optical axis of laser beam expanding focusing system keeps coaxial, it can be ensured that when adjusting the focusing negative lens in lens group,
Realize CO2The remote focusing of laser；Using visible light camera combination Two Dimensional Rotating, mechanism can be realized searching for foreign matter target
Rope, capture and locking.In 50m or so, under the conditions of weather is fine, using the focusing scheme and located off-axis, high energy laser energy
It is high to measure utilization rate, foreign matter can be lighted in 5S；Under extreme weather conditions, and under the conditions of limit operating distance, using this
Focusing scheme and located off-axis, high energy laser capacity usage ratio is high, can light foreign matter in 30S.
2. the position of double off axis paraboloid mirror microscope groups is fixed in the present invention, the position for negative lens of focusing in lens group is adjustable, this
Sample only carries out fine adjustment to the position of focusing negative lens, off-axis element is not adjusted, Neng Goubao in remote work
The stability and alignment of focusing are demonstrate,proved, the focusing for avoiding distant object jumps.
3. the F number of double off axis paraboloid mirror microscope groups and lens group can sufficiently shorten the length of optical system less than 4 in the present invention
Degree reduces the volume of ablation device.
4. the mirror surface diameter proportion of the main off axis paraboloidal mirror of large scale and small size time off axis paraboloidal mirror is full in the present invention
Foot makes the shrink beam ratio of double off axis paraboloid mirror microscope groups be 3:1, help to obtain the image quality close to diffraction limit.
5. CO in the present invention2Laser is continuous or high power pulsed ion beams CO2Laser, power are not less than 100W, can satisfy
Remote ablation demand.
6. Two Dimensional Rotating mechanism is that azimuth and pitching angular accuracy are superior to 5 " precision rotating mechanism, it can be ensured that adjust
Precision.
7. lens group uses transmissive CO2The Ge material of laser is made, and further reduced equipment cost.
8. the present invention can complete remote, non-contact ablation task with lower cost, and avoid man-machine injury.
Detailed description of the invention
Fig. 1 is CO of the present invention2The schematic illustration of laser ablation apparatus.
Fig. 2 is CO of the present invention2The specific embodiment of laser ablation apparatus.
Fig. 3 is CO of the present invention2The hardware block diagram of laser ablation apparatus.
Fig. 4 is CO of the present invention2The software flow pattern of laser ablation apparatus.
Fig. 5 is to carry out the operational flowchart that remote high-voltage electricity foreign matter is removed using the present invention.
Description of symbols:
1-CO2Laser beam expanding focusing system, 11-CO2Laser, 12-CO2Laser beam expanding focuses Catadioptric system, 121-
Double off axis paraboloid mirror microscope groups, 122- lens group, 1221- positive lens, 1222- focusing negative lens, 2- visible light camera, 3- ranging
System, the coaxial light splitting microscope group of 4-, 41- main road spectroscope, 42- two-way spectroscope, 5- Two Dimensional Rotating mechanism, the orientation 51- turn-around machine
Structure, 52- pitching swing mechanism, 6- power supply, 7- display and control terminal, 71- display terminal, 72- control executor.
Specific embodiment
To make those skilled in the art fully understand technical solution of the present invention, exploitativeness and advantage, first to this
The inventive concept of invention and technology path carry out following explanation.
CO2The main output wavelength range of laser is 10.6 microns, since metal and nonmetallic materials are to the wave band
The laser absorption rate difference of range is very big, and transmitance is higher in an atmosphere for the wave band, thus is suitable for high voltage transmission line (gold
Belong to) on dangle non-metal foreign body remote, contactless removing.
Due to high voltage transmission line set up apart from ground have certain altitude, and partial high pressure power transmission line be erected at mountain top or its
His remote location, it is general farther out with the trouble free service distance that can actually carry out foreign matter clear operation personnel, belong to remote clear
Except operation.By laser transmission formulaWherein λ is optical maser wavelength, and θ is the far field divergence half angle of laser, ω0It is sharp
The waist radius of light hot spot；It is found that beam radius needs are very big, and due to optical maser wavelength to reach the lesser angle of divergence
It is longer, almost several times in visible wavelength, if to CO2Laser directly expands, not can guarantee obtain at a distance it is lesser swash
Light spot size, therefore need to be to the CO transmitted at a distance2Laser beam is focused, to meet the light spot energy requirement of ablation.
In CO2In laser ablation system, the practical diffraction pattern of whole system, which is limited by, expands light-emitting window size, by diffraction
Theory is it is found that diffraction from circular aperture first dark ring diameter dr ' are as follows:
Wherein: λ is optical maser wavelength, and D is the bore for expanding out light of laser ablation system, and f ' is that laser ablation system is burnt
Away from；When taking CO2Laser emitting laser wave λ=10.6 μm will be calculated apart from the distant place laser ablation system 200m spot diameter
It less than Φ 20mm, is calculated through above formula, needing beam expanding lens exit beam diameter is about 258.64mm.By using certain structural type
The beam expanding lens of formula, adjusting, which expands distance between two microscope groups, can be achieved remote hot spot focusing.Ablation is carried out to remote foreign matter
It needs to measure the distance between foreign matter and system by range-measurement system before, then focusing system is accurately controlled, come
Realize CO2Laser facula focuses.
Due to CO2Laser is invisible, and when remote work, even visible light also can not see laser clearly using visual
Hot spot, therefore the present invention is scanned for and is locked to entire foreign matter target using visible light camera, and is supervised to ablation effect
It surveys.
To realize that remote high voltage transmission line foreign matter is removed, it is also necessary to by CO2Laser beam expanding focusing system, range-measurement system and
Visible light camera (monitoring system) these three subsystems carry out organic connections, and organic connections here are not to be simply stacked on
Together.If also, three subsystems want coordinated reach complete the search of long distance laser foreign matter, locking, ablation and its
The purpose of effect detection also there are certain requirements for loading the angle precision of Two Dimensional Rotating mechanism of three subsystems.
To realize that remote high voltage transmission line foreign matter is removed, CO2Beam-expanding system in laser facula focusing system, should be able to
Shorten system length, intermediate picture point is not present, avoids the laser point for occurring high-energy in system.When operating distance farther out when, institute
It needs aperture of objective lens larger, and there are motor adjustment component, heavy-calibre element and off-axis element in regulating system should be avoided.In the presence of
The system of central obscuration is not suitable for the system, can inevitably bring the loss of laser energy；It avoids in regulating system
Heavy-calibre element and off-axis element can guarantee the stability and alignment of focusing, and the focusing of distant object is avoided to jump.
CO2Laser beam expanding focusing system sheet is as small field of view heavy-caliber optical system, and visible light camera and ranging system
System belongs to the lesser system of visual field larger caliber, due to CO2Laser structure size itself is comparatively huge, and visible light is taken the photograph
Camera and range-measurement system are also required to reasonably be arranged in corresponding optical path, therefore reasonable light path layout is very crucial.
Due in laser ablation apparatus there are high energy laser, to avoid causing to endanger to operator or periphery biology
Evil, the present invention preferably has the Two Dimensional Rotating mechanism of regulatory function and lock function, and entire ablation device must satisfy centainly
Operating process can just carry out ablation operation.
Based on the above technical concept, below in conjunction with attached drawing, the invention will be further described.
As shown in Figure 1 and Figure 2, the CO provided by the present invention based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus includes
CO2Laser beam expanding focusing system 1, coaxial light splitting microscope group 4, visible light camera 2, range-measurement system 3, Two Dimensional Rotating mechanism 5, power supply
6 and display and control terminal 7.CO2Laser beam expanding focusing system 1, coaxial light splitting microscope group 4, visible light camera 2 and range-measurement system 3 encapsulate
In one, it is set in Two Dimensional Rotating mechanism 5.
CO2Laser beam expanding focusing system 1 includes CO2Laser 11 and CO2Laser beam expanding focuses Catadioptric system 12；CO2
Continuous or high power pulsed ion beams CO can be used in laser 112Laser；It is possible to be unable to satisfy long distance in view of laser energy is too low
The demand of divorced object ablation, CO2The power of laser 11 is not less than 100W.In order to guarantee to avoid going out in system without intermediate picture point
The laser point of existing high-energy, CO2Laser beam expanding focuses Catadioptric system 12 and uses the cascade Galilean telescope pattern of multiple groups
Catadioptric infrared optical system, including light beam turn back and organize 123, lens group 122 and double off axis paraboloid mirror microscope groups 121, double off-axis parabolics
Face microscope group 121 and lens group 122 are without burnt or approximate afocal system；Lens group 122 is used for CO2Hot spot is focused expansion
Beam, including the focusing negative lens 1222 and positive lens 1221 set gradually；Negative lens 1222 of focusing is constituted with positive lens 1221 to be expanded
Beam system, focusing negative lens 1222 are arranged in CO2On the emitting light path of laser 11, lens group 122 and double off-axis parabolics
The composition of face microscope group 121 expands focusing system；The position of focusing negative lens 1222 is adjustable；Pass through the position of fine tuning focusing negative lens 1222
It sets, can guarantee remote CO2The stability and alignment focused in hot spot focusing, avoid the focusing of distant object
It jumps.To reduce cost, focusing negative lens 1222 and positive lens 1221 are all made of transmissive CO2The Ge material of laser is made.
In order to shorten optical system length, reduce the volume of ablation device, double off axis paraboloid mirror microscope groups 121 and lens group
122 F number is preferably respectively less than 4.Double off axis paraboloid mirror microscope groups 121 include that the main off axis paraboloidal mirror of large scale and small size time are off-axis
Paraboloidal mirror, small size time off axis paraboloidal mirror are arranged on the emitting light path of lens group 122, the main off axis paraboloidal mirror of large scale
It is arranged on the emitting light path of small size time off axis paraboloidal mirror；The main off axis paraboloidal mirror of large scale and the off-axis parabolic of small size time
The mirror surface diameter proportion of face mirror meets so that the shrink beam ratio of double off axis paraboloid mirror microscope groups 121 is 3:1, help to obtain close to diffraction
The image quality of the limit.For convenience of design and implementation, the mirror surface diameter D of the main off axis paraboloidal mirror of large scale1Minimum value according to formulaIt determines；In formula, Lm is the farthest operating distance of laser ablation, and d ' is entire CO2The diffraction of laser ablation apparatus
Limited spot size.
Coaxial light splitting microscope group 4 includes main road spectroscope 41 disposed in parallel and two-way spectroscope 42；41 He of main road spectroscope
Plating is formed with bi-color branch light film on two-way spectroscope 42；Double-colored spectro-film on main road spectroscope 41, to CO2Laser light, it is right
Visible light and range laser reflection；Double-colored spectro-film on two-way spectroscope 42 penetrates range laser, to visible reflectance.
Main road spectroscope 41 is arranged on the emitting light path of double off axis paraboloid mirror microscope groups 121；Main road spectroscope 41 is defined far from double off-axis
The face of paraboloid microscope group 121 is the first mirror surface, and two-way spectroscope 42 is arranged on the reflected light path of the first mirror surface；Main road spectroscope
41 with the relative angular relationship of two-way spectroscope 42 so that CO2Laser beam expanding focusing system 1, visible light camera 2 and ranging system
3 three road light of uniting are coaxial, enable CO2The ablation target of the focusing of laser beam expanding focusing system 1, the locking of 2 picture centre of visible light camera
Monitoring objective and range-measurement system 3 measured by measuring distance of target be consistent.
To improve CO2The capacity usage ratio of laser, the double-colored spectro-film that main road spectroscope 41 is coated with, so that CO2Laser λ1=
Nearby transmissivityτ is greater than 98% to 10.6 mum wavelengths, so that visible light camera λ2The survey of=450nm~750nm and range-measurement system 3
Away from laser λ3Nearby reflectivity ρ is greater than 99% to=1.06 mum wavelengths；Two-way spectroscope 42 is coated with double-colored spectro-film, so that visible light
2 service band of video camera is λ2The light reflectivity ρ of=450nm~750nm is greater than 99%, the range laser λ of range-measurement system 33=
Nearby transmissivityτ is greater than 99% to 1.06 mum wavelengths.
The optical axis of visible light camera 2 is parallel with the outgoing beam optical axis of double off axis paraboloid mirror microscope groups 121；Define two-way point
Face of the light microscopic 42 towards main road spectroscope 41 is the second mirror surface, it is seen that light video camera 2 is located on the reflected light path of second mirror surface；
Visible light camera 2 is preferably provided with the zoom function of larger multiplying power, can be clear to large range of remote and close-in target
Clear imaging, large range of remote blur-free imaging are used for ablation, and the blur-free imaging of short distance is and remote for debugging
Focusing calibration is compared and calibrates, and can carry out frame choosing to Current lock target, that is, has electronic locking objective function；It can be seen that
Light video camera 2 is also connected with display and control terminal 7, and the image that will acquire is sent to display and control terminal 7.
Two Dimensional Rotating mechanism 5 includes orientation swing mechanism 51 and pitching swing mechanism 52, has and manually adjusts, automatically adjusts
And lock function, orientation swing mechanism 51 and pitching swing mechanism 52 can be adjusted with automatic or manual, realized to foreign matter target
It aims at and locks.
Display and control terminal 7 includes display terminal 71 and control executor 72.Control executor 72 and CO2Laser beam expanding focuses system
System 1, visible light camera 2, range-measurement system 3 are connected with Two Dimensional Rotating mechanism 5, are used for: adjusting the orientation of Two Dimensional Rotating mechanism 5
And pitching；It will be seen that the ranging data that image acquired in light video camera 2 and range-measurement system 3 export is sent to display terminal
71；Position adjusting is carried out (by ranging number to the focusing negative lens 1221 in lens group 122 according to the ranging data of range-measurement system 3
Specifically referring to document according to the method for the position coordinates for being converted to focusing negative lens 1221, " experiment of laser far field focus characteristics is ground
Study carefully ") to control CO2Locking of the laser beam expanding focusing system 1 to ablation target, laser ablation；Monitor ablation process.
It is provided with camera scaling and focusing button on control executor 72, visible light camera 2 is adjusted by serial ports, makes to regard
Frequency shows clear；Visible light camera 2 is fixed in Two Dimensional Rotating mechanism 5, and manually adjusting Two Dimensional Rotating mechanism is in target
In display terminal 71, foreign matter target is selected in 71 upper ledge of display terminal, control executor is calculated two-dimentional miss distance, passes through serial ports
This miss distance is sent to Two Dimensional Rotating mechanism 5, to control the orientation and pitching of Two Dimensional Rotating mechanism；Target and video hub
After coincidence, start range-measurement system 3, and data are received by serial ports.
The present invention is by CO2These three independent sub-light roads of laser beam expanding focusing system 1, visible light camera 2, range-measurement system 3
It is arranged in Two Dimensional Rotating mechanism 5 jointly, in conjunction with CO2The initial position and visible light camera 2 of laser ablation apparatus are provided
Foreign substance information, adjust Two Dimensional Rotating mechanism 5 orientation swing mechanism 51 and pitching swing mechanism 52, by foreign matter target lock-on in
The center of video image shown by the display terminal 71 of display and control terminal 7.After locking foreign matter target, mentioned according to range-measurement system 3
The ranging information of confession, to CO2Laser beam expanding focuses in Catadioptric system 12, the focusing negative lens 1221 in lens group 122
Corresponding position carries out fine adjustment, to complete the focusing and ablation of ablative laser, during this, using display and control terminal 7 to ablation
Process is monitored, and power supply 6 is the power supply of all related systems in measurement process, common to complete remote, non-contact type high voltage
Power transmission line foreign matter is removed.
As shown in figure 3, visible light camera 2 is connected by USB data line with display terminal 71, real-time transmission of video is extremely
Display terminal 71.In addition, visible light camera 2 is connected by RS485 serial ports with control executor 72, control executor 72 is logical
Scaling and focusing that serial ports sends instruction control visible light camera 2 are crossed, realizes the improvement to video quality.Control executor 72
It is connect by RS485 serial ports with range-measurement system 3, instructs control range-measurement system 3 to realize distance measurement function by sending, and pass through data
Line transmission range parameter is to display terminal 71.Visible light camera 2 is fixed in Two Dimensional Rotating mechanism 5, and control executor 72 is logical
The pitching and rotation for crossing RS485 control Two Dimensional Rotating mechanism 5 can be manual by the real-time video on observation display terminal 71
Two Dimensional Rotating mechanism 5 is adjusted to ideal position, alternatively, it is also possible to send position command automatically by selection target in video
To Two Dimensional Rotating mechanism 5, the adjustment of position is realized.
As shown in figure 4, first determine whether display terminal 71 can real-time display video, then adjust Two Dimensional Rotating mechanism 5 make
Target is located in video, and scaling and the focusing of visible light camera 2 are controlled by control executor 72, keeps picture clear, is regarding
Foreign matter target is selected in frequency, control executor calculates miss distance automatically and sends instructions to Two Dimensional Rotating by controlling executor 72
Mechanism 5 finally starts range-measurement system 3, obtains real-time range parameter and is shown on display terminal 71.
As shown in figure 5, before preparation, by CO2Laser ablation apparatus is mounted on small transporting vehicle.In vehicle driving mistake
Cheng Zhong has found the foreign matter target on high voltage transmission line.Parking position (generally higher than 20m) is determined according to distance, by CO2Laser is burnt
The exit positions of erosion device are adjusted to be approximately towards foreign matter to be cleaned.
Then the general supply for opening whole equipment, presses " visible light camera " button, powers to visible light camera 2,
The real-time video in display terminal 71 is observed, Two Dimensional Rotating mechanism 5 is manually adjusted, target is made to be generally in the middle area of video
Domain adjusts " scaling " button and " focusing " button on control executor 72, the real-time video center choosing in display terminal 71
Foreign matter target, control executor calculates miss distance (the relative two dimensional displacement that frame chooses the heart and video hub), and controls two dimension
Rotating mechanism 5 automatically adjusts, and target is made to be located at video hub." ranging " button is pressed, range-measurement system 3 starts ranging, and ranging is complete
Cheng Hou obtains distance parameter after display " ranging completion " and shows.Then " burning light focusing " is pressed, focusing negative lens is adjusted
1222 position sets the energy parameter of ablative laser according to distance parameter after display " focusing is completed ".Press " starting ablation "
Button, CO2Laser 11 emits superlaser, observes the real-time video in display terminal 71, finely tunes Two Dimensional Rotating mechanism 5, with
Into ablation position.It observes that foreign matter burning falls off, presses " stopping ablation " button, pass hull closure general supply is finally completed foreign matter
It removes.
Present invention can apply to remote, non-contact removings to hang on the non-metal foreign body on high voltage transmission line, use
Special Light Electrical structural shape realizes the search, locking and removing of remote foreign matter, it is ensured that device price is comparatively low
It is honest and clean, it can be achieved that degree is high, and ensure man-machine safety.
Claims (10)
1. a kind of CO based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: including CO2Laser beam expanding focuses
System (1), coaxial light splitting microscope group (4), visible light camera (2), range-measurement system (3), Two Dimensional Rotating mechanism (5) and display and control terminal
(7)；CO2Laser beam expanding focusing system (1), visible light camera (2), range-measurement system (3) and coaxial light splitting microscope group (4) are packaged in
One, is set on Two Dimensional Rotating mechanism (5)；
CO2Laser beam expanding focusing system (1) includes CO2Laser (11) and CO2Laser beam expanding focuses Catadioptric system (12)；
CO2It is the catadioptric infrared optics system of the cascade Galilean telescope pattern of multiple groups that laser beam expanding, which focuses Catadioptric system (12),
System, including lens group (122) and double off axis paraboloid mirror microscope groups (121), double off axis paraboloid mirror microscope groups (121) and lens group (122)
It is without burnt or approximate afocal system；
Lens group (122) includes the focusing negative lens (1222) and positive lens (1221) set gradually；It focuses negative lens (1222)
Beam-expanding system is constituted with positive lens (1221), focusing negative lens (1222) is arranged in CO2On the emitting light path of laser (11), thoroughly
Microscope group (122) and double off axis paraboloid mirror microscope groups (121) constitute and expand focusing system；The position of focusing negative lens (1222) can
It adjusts；
The coaxial light splitting microscope group (4) is set on the emitting light path of double off axis paraboloid mirror microscope groups (121)；
Coaxial light splitting microscope group (4) includes main road spectroscope (41) disposed in parallel and two-way spectroscope (42), main road spectroscope
(41) and on two-way spectroscope (42) plating is formed with bi-color branch light film；Double-colored spectro-film on main road spectroscope (41), to CO2Swash
Light penetrates, and reflects visible light and range laser；Double-colored spectro-film on two-way spectroscope (42) penetrates range laser, right
Visible reflectance；
Main road spectroscope (41) is arranged on the emitting light path of double off axis paraboloid mirror microscope groups (121)；It defines main road spectroscope (41)
Face far from double off axis paraboloid mirror microscope groups (121) is the first mirror surface, and the reflected light of the first mirror surface is arranged in two-way spectroscope (42)
On the road；
The optical axis of visible light camera (2) is parallel with double outgoing beam optical axises of off axis paraboloid mirror microscope group (121)；Define two-way point
Face of the light microscopic (42) towards main road spectroscope (41) is the second mirror surface, it is seen that light video camera (2) is located at the anti-of second mirror surface
It penetrates in optical path；
Range-measurement system (3) is located on the transmitted light path of second mirror surface；
Display and control terminal (7) includes display terminal (71) and control executor (72)；
Control executor (72) and CO2Laser beam expanding focusing system (1), visible light camera (2), range-measurement system (3) and two dimension rotation
Rotation mechanism (5) is connected, and is used for: adjusting the orientation and pitching of Two Dimensional Rotating mechanism (5)；It will be seen that light video camera (2) are acquired
Image and range-measurement system (3) output ranging data be sent to display terminal (71)；According to the ranging number of range-measurement system (3)
It adjusts according to position is carried out to the focusing negative lens (1222) in lens group (122) to control CO2Laser beam expanding focusing system (1) is right
The locking of ablation target, laser ablation；Monitor ablation process.
2. the CO according to claim 1 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: described
The F number of double off axis paraboloid mirror microscope groups (121) and lens group (122) is respectively less than 4.
3. the CO according to claim 1 or 2 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that:
Double off axis paraboloid mirror microscope groups (121) include the main off axis paraboloidal mirror of large scale and small size time off axis paraboloidal mirror, small ruler
Very little secondary off axis paraboloidal mirror is arranged on the emitting light path of lens group (122), and the main off axis paraboloidal mirror of large scale is arranged in small ruler
On the emitting light path of very little secondary off axis paraboloidal mirror；The mirror surface of the main off axis paraboloidal mirror of large scale and small size time off axis paraboloidal mirror
Diameter proportion meets so that the shrink beam ratio of double off axis paraboloid mirror microscope groups (121) is 3:1.
4. the CO according to claim 3 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: described
The mirror surface diameter D of the main off axis paraboloidal mirror of large scale1Minimum value according to formulaIt determines；In formula, Lm is sharp
The farthest operating distance of light ablation, d ' are entire CO2The diffraction limited spot size of laser ablation apparatus.
5. the CO according to claim 3 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: described
CO2Laser (11) is continuous or high power pulsed ion beams CO2Laser, power are not less than 100W.
6. the CO according to claim 3 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: main road
Double-colored spectro-film on spectroscope (41), to CO2The transmitance of laser is greater than 98%, to the reflectivity of visible light and range laser
Greater than 99%；Double-colored spectro-film on two-way spectroscope (42) is greater than 99% to the transmitance of range laser, to the anti-of visible light
Rate is penetrated greater than 99%.
7. the CO according to claim 3 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: two dimension
Rotating mechanism (5) is that azimuth and pitching angular accuracy are superior to 5 " precision rotating mechanism.
8. the CO according to claim 7 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: two dimension
Rotating mechanism (5) has the function of to manually adjust.
9. the CO according to claim 3 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: lens
Group (122) uses transmissive CO2The Ge material of laser is made.
10. the CO according to claim 3 based on double off axis paraboloid mirror microscope groups2Laser ablation apparatus, it is characterised in that: can
Light-exposed video camera (2) has zoom function, can be to distant object blur-free imaging, and can carry out frame to Current lock target
Choosing.
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| CN201910198870.7A CN110026389B (en) | 2019-03-15 | 2019-03-15 | CO2 laser ablation device based on double off-axis parabolic mirror group |
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| CN201910198870.7A CN110026389B (en) | 2019-03-15 | 2019-03-15 | CO2 laser ablation device based on double off-axis parabolic mirror group |
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| CN110026389B CN110026389B (en) | 2023-05-02 |
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