CN103766317B - A kind of all standing laser dot-matrix structure based on thermal burn weeding and method - Google Patents
A kind of all standing laser dot-matrix structure based on thermal burn weeding and method Download PDFInfo
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- CN103766317B CN103766317B CN201410046063.0A CN201410046063A CN103766317B CN 103766317 B CN103766317 B CN 103766317B CN 201410046063 A CN201410046063 A CN 201410046063A CN 103766317 B CN103766317 B CN 103766317B
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Abstract
The present invention relates to a kind of all standing laser dot-matrix structure based on thermal burn weeding, is by fixed frame and laser constitution; Fixed frame is the face of cylinder or other cylinder, and fixed frame has multiple hole, and in each hole, be installed with laser instrument, laser instrument forms dot matrix on fixed frame, and the laser that each laser instrument sends converges point-blank.The pitchs of holes of adjacent two row are constant, and the displacement that the Kong Youyi of adjacent rows is constant, does not have coordinate space during to guarantee laser irradiation.Laser instrument is connected with controller, by weeds position, monitor location, then controls laser switch corresponding on dot matrix instrument, by the weeding of Emission Lasers thermal burn by controller.Structural design advantages of simple of the present invention, according to the particular location of weeds, can control the switch of corresponding laser instrument, line by line accurately weeding line by line.This design is placed on agricultural machinery, along with moving ahead of agricultural machinery, realizes the object of the in good time laser weeding of all standing.
Description
Technical field
The present invention relates to a kind of all standing laser dot-matrix structure, be mainly used in thermal burn field weeding.
Background technology
For a long time, the food that people depend on for existence provides by the method such as serike and letting animals feed, but in serike process, inevitably runs into the problem of control crop smothering.Weeds are plants in inappropriate region of growth, and frequent association, in the different growth and development stages of crop, competes moisture and nutrient intensely with crop, and the severe jamming normal growth of crop, causes crop failure and quality to decline.
The method that farmland weed is prevented and kill off has machinery, chemistry, manpower, electrostatic, biological weed control etc., and in recent years, the high efficiency due to chemical weed control has become main weeding system.But widely using of chemical weed control method has also caused the deterioration of a series of agricultural environment and Food Security.And weeding by machine can cause serious moisture evaporation to be lost, need careful use in the place of water resource rareness.Although therefore minimize ploughing and weeding to obtain and adopt widely, Weeds distribution problem still exists.Hot weeding provides a kind of method not using weed killer herbicide, and achieves and minimize ploughing and weeding, and some hot herbicidal methods not wind-engaging rainy day gas constraint, be easy to operation, for organic farming provides feasible method.And the laser instrument weeding in hot herbicidal methods make use of laser instrument and concentrates a large amount of energy in a branch of narrow laser beam area, accurately can point to target rapidly, and laser beam can focus in a little area, increases the energy in unit are.Laser can be used as the cutting method of physics Weeds distribution, also also can reach the effect controlling weeds when not cutting off weeds stem stalk.Laser can optionally transmit high density energy to plant, raises the temperature of moisture in plant cell thus causes it to stop or growth-delaying.The kind of the effect of laser Weeds distribution and the wavelength of laser, irradiation time, spot size, power and weeds is relevant.
Summary of the invention
Technology of the present invention is dealt with problems and is: weeds are random, uneven in the distribution in field, and have clustering property.The discontinuity of this weeding control effect just, for the feasibility of accurate weeding technique provides foundation.The present invention is exactly based on laser dot-matrix arrangement and focusing structure design, provides a kind of all standing laser in good time thermal burn field weeding new method.This structure control precision is high, can remove weeds in field in all standing ground.
Technical solution of the present invention is: mainly provide a kind of all standing laser dot-matrix structure based on thermal burn weeding, by fixed frame and laser constitution; Fixed frame is the face of cylinder or other cylinder, and fixed frame has multiple hole, and in each hole, be installed with laser instrument, laser instrument forms dot matrix on fixed frame, and the laser that each laser instrument sends converges point-blank.
On fixed frame, the pitchs of holes of adjacent two row are constant, and the displacement that the Kong Youyi of adjacent rows is constant, does not have coordinate space during to guarantee laser irradiation.
Particularly, fixed frame is the face of cylinder or other form cylinder, and on fixed frame, often row arranges N number of hole, arranges M altogether capable.The diameter in hole is D1, and the pitch of holes of colleague is the pitch of holes d2 of d1, adjacent lines, guarantees d1+D1=MD2 (can meet this relational expression by the value changing d1).Face of cylinder axial length L=(M-1) (d1+D1), arc length S >MD1+ (M-1) d2, adopt laser diameter equal with bore dia, the diameter of laser instrument launch spot at distance R place is D2.If the line direction of fixed frame is x-axis direction, the laser dot-matrix that fixed frame arranges is symmetrical about center line, centrally alignment both sides distribution, the hole of adjacent rows has certain displacement c1=D2 along the x-axis direction, thus the every bit in cylindrical axis can be made to have laser instrument hot spot to cover, there is no coordinate space when guaranteeing laser scans.
Design a kind of all standing laser dot-matrix structure based on thermal burn weeding, fixed frame 1 is the face of cylinder, illustrates: if laser instrument 2 adopts semiconductor laser, and its output wavelength is 650nm ± 5nm, power output is 5mw, is D2=2mm in distance 600mm laser spot diameter at a distance.Face of cylinder axial length l=980mm, radius R=600mm, arc length s=400mm, corresponding central angle θ=2/3 radian.On fixed frame 1, often row arranges N=50 hole, arrange M=20 altogether capable, the laser dot-matrix of arrangement on fixed frame 1 is symmetrical about center line, the diameter in hole and laser instrument 2 equal diameters D1=10mm, often row adjacent holes spacing d1=10mm, the pitch of holes d2=10mm of adjacent lines.Center line along fixed frame 1 distributes to both sides, the hole displacement along the x-axis direction of adjacent lines is c1=c2=c3=c4=c5=c6=c7=c8=c9=2mm, thus guarantee that laser instrument can cover the axis on the face of cylinder completely, laser irradiation does not have coordinate space.
The invention also discloses a kind of method utilizing the weeding of described laser dot-matrix structure thermal burn, be by described laser dot-matrix structure installment on agricultural machinery, laser instrument is connected with controller, by the weeds position, monitor location on agricultural machinery, laser switch corresponding in laser dot-matrix structure is controlled, by the weeding of Emission Lasers thermal burn again by controller.
Structural design advantages of simple of the present invention, according to the particular location of weeds, can control the switch of corresponding laser instrument, line by line accurately weeding line by line.This design being placed on agricultural machinery, along with moving ahead of agricultural machinery, realizing the object of the in good time laser weeding of all standing, is a kind of laser dot-matrix structure be very practical.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is a kind of all standing laser dot-matrix structure Facad structure schematic diagram based on thermal burn weeding of the present invention;
1-fixed frame; 2-laser instrument;
Fig. 2 is a kind of all standing laser dot-matrix structure Facad structure partial schematic diagram based on thermal burn weeding of the present invention;
Fig. 3 is a kind of all standing laser dot-matrix texture edge structural representation based on thermal burn weeding of the present invention;
Fig. 4 is a kind of all standing laser dot-matrix structural perspective based on thermal burn weeding of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further detailed description is done to the present invention.
As shown in Figure 1, a kind of all standing laser dot-matrix structure based on thermal burn weeding, it is characterized in that, fixed frame 1 is the face of cylinder, and on fixed frame 1, often row arranges N number of hole, arranges M altogether capable.The diameter in hole is D1, and the pitch of holes of colleague is the pitch of holes d2 of d1, adjacent lines, guarantees d1+D1=MD2 (can meet this relational expression by the value changing d1).Face of cylinder axial length L=(M-1) (d1+D1), arc length S >MD1+ (M-1) d2, adopt laser diameter equal with bore dia, the diameter of laser instrument launch spot at distance R place is D2.X-axis direction is set to fixed frame 1 line direction, the laser dot-matrix of arrangement on fixed frame 1 is symmetrical about center line, centrally alignment both sides distribution, the hole of adjacent rows has certain displacement c1=D2 along the x-axis direction, thus the every bit in cylindrical axis can be made to have laser instrument hot spot to cover, there is no coordinate space when guaranteeing laser scans.
As shown in Figure 4, the axis left end on the face of cylinder is initial point, and axis right direction is x-axis direction, based on Technique for Identification of Weed, detect that certain point has weeds in x-axis by scanner, point coordinates is designated as X (unit mm), if laser instrument row, column position coordinates is Z (m, n) on the face of cylinder, we then can pass through weeds position coordinates, determine to need operating laser row, column position coordinates Z (m, n), be specifically calculated as follows:
Row-coordinate
Row coordinate
" [] " is rounding operation symbol herein, and " % " is complementation symbol (if X is decimal, then complementation result is also decimal).
Determine the computing formula of laser instrument row, column position coordinates Z (m, n) needing work, just can be controlled the switch of certain laser instrument on dot matrix instrument by controller, thus reach the object of accurate weeding.Along with agricultural machinery moves ahead, carry out reed time controll by computer control, the weeding of all standing thermal burn can be carried out to whole field.
The present invention has designed a kind of concrete all standing laser dot-matrix structure, and fixed frame 1 is the face of cylinder, face of cylinder axial length l=980mm, radius R=600mm, arc length s=400mm, corresponding central angle θ=2/3 radian.On fixed frame 1, often row arranges N=50 hole, arrange M=20 altogether capable, the laser dot-matrix of arrangement on fixed frame 1 is symmetrical about x-axis direction center line, the diameter in hole and laser instrument 2 equal diameters D1=10mm, often row adjacent holes spacing d1=10mm, the pitch of holes d2=10mm of adjacent lines, center line along fixed frame 1 distributes to both sides, the hole displacement c1=c2=c3=c4=c5=c6=c7=c8=c9=2mm along the x-axis direction of adjacent lines, laser instrument 2 is semiconductor laser, output wavelength is 650nm ± 5nm power output is 5mw, hot spot is D2=2mm at 600mm place diameter, equal with the hole displacement c1 along the x-axis direction of adjacent lines, to guarantee that laser instrument can cover scanning space completely.
Bring given concrete numerical value into formula (1) and (2), obtain a kind of computing formula of laser instrument row, column position coordinates Z (m, n) of all standing laser dot-matrix structure based on thermal burn weeding:
Row-coordinate
Row coordinate
Such as, measure weeds coordinate position X=68.7mm by scanner, by laser instrument row, column position coordinates computing formula, can obtain: m=5, n=4, be i.e. the 5th row the 4th row laser works; If weeds coordinate position X=96.3mm, then m=9, n=5, the 9th row the 5th row laser works.Above two examples, the row, column coordinate position of the laser instrument that passing type (3) and (4) calculate meets completely with design original idea, as long as and weeds coordinate is at sweep limits 0mm-980mm, have corresponding laser works, guarantee to cover completely.
And a kind of all standing laser dot-matrix structure based on thermal burn weeding of the present invention is for cylinder center line full symmetric, to guarantee having two laser instruments to aim at and irradiation weeds position at symmetric position place simultaneously, to guarantee the object of killing weeds completely, better effect can be reached.
Claims (4)
1., based on an all standing laser dot-matrix structure for thermal burn weeding, it is characterized in that being made up of fixed frame (1) and laser instrument (2); Fixed frame (1) is the face of cylinder or other cylinder, fixed frame (1) there is multiple hole, laser instrument (2) is installed with in each hole, laser instrument (2) forms dot matrix on fixed frame (1), and the laser that each laser instrument (2) sends converges point-blank; The pitchs of holes of upper adjacent two row of fixed frame (1) are constant, and the displacement that the Kong Youyi of adjacent rows is constant, does not have coordinate space during to guarantee laser irradiation.
2. a kind of all standing laser dot-matrix structure based on thermal burn weeding according to claim 1, it is characterized in that, fixed frame (1) is the face of cylinder; On fixed frame (1), often row arranges N number of hole, and arrange M altogether capable, the diameter in hole is D1; Adopt laser diameter equal with bore dia, the spot diameter of laser instrument is D2, and the pitch of holes with a line is d1, and the pitch of holes of adjacent lines is d2, guarantees d1+D1=MD2; Face of cylinder axial length L=(N-1) (d1+D1), arc length S >MD1+ (M-1) d2; X-axis direction is set to the direction of fixed frame (1) row, the laser dot-matrix of the upper arrangement of fixed frame (1) is symmetrical about the center line of dot matrix, centrally alignment both sides distribution, the hole of adjacent rows has certain displacement c1=D2 along the x-axis direction.
3. a kind of all standing laser dot-matrix structure based on thermal burn weeding according to claim 2, it is characterized in that: fixed frame (1) is the face of cylinder, face of cylinder axial length L=980mm, radius R=600mm, arc length s=400mm, corresponding central angle θ=2/3 radian; On fixed frame (1), often row arranges N=50 hole, arrange M=20 altogether capable, the laser dot-matrix of the upper arrangement of fixed frame (1) is symmetrical about x-axis direction center line, the diameter in hole and laser instrument (2) equal diameters D1=10mm, often row adjacent holes spacing d1=10mm, the pitch of holes d2=10mm of adjacent lines; Semiconductor laser selected by laser instrument (2), output wavelength is 650nm ± 5nm power output is 5mw, hot spot is D2=2mm at 600mm diameter at a distance, center line along fixed frame (1) distributes to both sides, the hole displacement c1=c2=c3=c4=c5=c6=c7=c8=c9=2mm along the x-axis direction of adjacent lines.
4. one kind utilizes the method for laser dot-matrix structure thermal burn weeding described in claim 1, it is characterized in that, by laser dot-matrix structure installment described in claim 1 on agricultural machinery, laser instrument is connected with controller, by the weeds position, monitor location on agricultural machinery, laser switch corresponding in laser dot-matrix structure is controlled, by the weeding of Emission Lasers thermal burn again by controller.
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| BR112021014762A2 (en) * | 2019-01-28 | 2021-09-28 | The State Of Israel, Ministry Of Agriculture & Rural Development, Agricultural Research Organization (Aro) (Volcani Center) | DEVICE TO PERFORM ELECTROSTATIC REMOVAL, METHOD OF USING ELECTROSTATIC SHOCKS AND METHOD FOR WEED CONTROL |
| CN111972385A (en) * | 2020-09-07 | 2020-11-24 | 吉林省中业光电技术有限公司 | Laser weeding device convenient to soil detects |
| CN115281172B (en) * | 2022-08-05 | 2023-06-23 | 安徽中科智能感知科技股份有限公司 | Array combined control type laser platform for laser weeding robot |
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| US5848087A (en) * | 1996-01-23 | 1998-12-08 | Fuji Xerox Co., Ltd. | Two-dimensional surface emitting laser array, two-dimensional surface emitting laser beam scanner, two-dimensional surface emitting laser beam recorder, and two-dimensional surface emitting laser beam recording method |
| US6188466B1 (en) * | 1998-09-25 | 2001-02-13 | Fuji Xerox Co., Ltd. | Image forming apparatus and two-dimensional light-emitting element array |
| EP1447889B1 (en) * | 2001-01-24 | 2006-06-14 | High Q Laser Production GmbH | Compact ultra fast laser |
| CN203775996U (en) * | 2014-02-08 | 2014-08-20 | 江苏大学 | Full-coverage laser lattice structure based on heat hurt weeding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19840926B4 (en) * | 1998-09-08 | 2013-07-11 | Hell Gravure Systems Gmbh & Co. Kg | Arrangement for material processing by means of laser beams and their use |
| JP5137514B2 (en) * | 2007-09-27 | 2013-02-06 | キヤノン株式会社 | Two-dimensional surface emitting laser array |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5848087A (en) * | 1996-01-23 | 1998-12-08 | Fuji Xerox Co., Ltd. | Two-dimensional surface emitting laser array, two-dimensional surface emitting laser beam scanner, two-dimensional surface emitting laser beam recorder, and two-dimensional surface emitting laser beam recording method |
| US6188466B1 (en) * | 1998-09-25 | 2001-02-13 | Fuji Xerox Co., Ltd. | Image forming apparatus and two-dimensional light-emitting element array |
| EP1447889B1 (en) * | 2001-01-24 | 2006-06-14 | High Q Laser Production GmbH | Compact ultra fast laser |
| CN203775996U (en) * | 2014-02-08 | 2014-08-20 | 江苏大学 | Full-coverage laser lattice structure based on heat hurt weeding |
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