CN203775996U - Full-coverage laser lattice structure based on heat hurt weeding - Google Patents

Abstract

The utility model relates to a full-coverage laser lattice structure based on heat hurt weeding. The full-coverage laser lattice structure consists of a fixed frame and laser devices; the fixed frame is a circular cylindrical surface or other cylindrical surface, a plurality of holes are formed in the fixed frame, a laser device is fixedly mounted in each hole, the laser devices form a lattice on the fixed frame, and lasers emitted by the laser devices are converged onto one straight line. The hole pitch of two adjacent lines is constant, and a constant displacement is formed between two adjacent rows of holes so as to ensure that no coordinate gap exists during irradiation of the laser devices. The laser devices are connected with a controller, the positions of weeds are positioned by a monitor, and then corresponding switches of the laser devices on a lattice instrument are controlled by the controller, so that heat hurt weeding is realized by emitting lasers. The full-coverage laser lattice structure is simple and reasonable in structural design, and the corresponding switches of the laser devices can be controlled according to specific locations of the weeds, so that accurate weeding is realized line by line. The design is put on agricultural machinery, and the purpose of full-coverage timely laser weeding is achieved along with the forward moving of the agricultural machinery.

Description

A kind of all standing laser dot-matrix structure based on thermal burn weeding

Technical field

The utility model relates to a kind of all standing laser dot-matrix structure, is mainly used in thermal burn field weeding.

Background technology

For a long time, the food that people depend on for existence provides by methods such as serike and letting animals feeds, yet in serike process, inevitably will run into the problem of control crop smothering.Weeds are the plants that are grown in inappropriate region, and often association, in the different growth and development stages of crop, is competed moisture and nutrient intensely with crop, severe jamming the normal growth of crop, cause crop failure and quality to decline.

The method that farmland weed is prevented and kill off has machinery, chemistry, manpower, static, biological weed control etc., in recent years, and because the high efficiency of chemical weed control has become main weeding system.But being widely used of chemical weed control method also caused a series of agricultural environment deterioration and Food Security.And weeding by machine can cause serious moisture evaporation to be lost, in the place of water resource rareness, need careful use.Although therefore minimize ploughing and weeding, obtained adopting widely, weeds control problem still exists.Hot weeding provides a kind of method of not using weed killer herbicide, and has realized and minimize ploughing and weeding, and some hot herbicidal methods not constraint, the easy operating of wind-engaging rainy day gas, for organic farming provides feasible method.And laser instrument weeding in hot herbicidal methods has utilized laser instrument to concentrate a large amount of energy in a branch of narrow laser beam area, can accurately point to rapidly target, and laser beam can focus in a little area, increase the energy in unit are.Laser can be used as the cutting method that physics weeds are controlled, and also can in the situation that not cutting off weeds stem stalk, also can reach the effect of controlling weeds.Laser can optionally transmit high density energy to plant, thereby in rising plant cell, the temperature of moisture causes it to stop or growth-delaying.The effect that laser weeds are controlled is relevant with the kind of sharp light wavelength, irradiation time, spot size, power and weeds.

Utility model content

Technology of the present utility model is dealt with problems and is: the distribution of weeds in field is random, inhomogeneous, and has the property of clustering.The discontinuity that this weeds distribute just, for the accurate feasibility of weeding technology provides foundation.The utility model is exactly based on laser dot-matrix, to arrange and focusing structure design, the in good time thermal burn field weeding of a kind of all standing laser new method is provided.This structure control precision is high, can remove weeds in field in all standing ground.

Technical solution of the present utility model 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, has a plurality of holes on fixed frame, in each hole, is installed with laser instrument, and laser instrument forms dot matrix on fixed frame, and the laser that each laser instrument sends converges in one and focuses on straight line.

On fixed frame, the pitchs of holes of adjacent two row are constant, and the constant displacement of Kong Youyi of adjacent two row does not have coordinate space when guaranteeing laser instrument irradiation.

Particularly, fixed frame is the face of cylinder or other form cylinder, and on fixed frame, every row is arranged N hole, arranges altogether M capable.The diameter in hole is D ₁, colleague's pitch of holes is d ₁, the pitch of holes d of adjacent lines ₂, guarantee d ₁+ D ₁=MD ₂(can be by changing d ₁value meet this relational expression).Face of cylinder axial length L=(M-1) (d ₁+ D ₁), arc length S >MD ₁+ (M-1) d ₂, the laser diameter that adopts and bore dia equate, the diameter of laser instrument launch spot at distance R place is D ₂.If the line direction of fixed frame is x direction of principal axis, the laser dot-matrix of arranging on fixed frame is symmetrical about center line, along center line, to both sides, distributes, and there is certain displacement c in the hole of adjacent two row along x direction of principal axis ₁=D ₂thereby, can make the every bit in cylindrical axis have laser instrument hot spot to cover, while guaranteeing laser scans, there is no coordinate space.

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, its output wavelength is 650nm ± 5nm, power output is 5mw, apart from 600mm laser spot diameter at a distance, is being D ₂=2mm.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, every row is arranged M=50 hole, arranges altogether N=20 capable, and the laser dot-matrix of arranging on fixed frame 1 is symmetrical about center line, the diameter in hole and laser instrument 2 equal diameters D ₁=10mm, every row adjacent holes spacing d ₁=10mm, the pitch of holes d of adjacent lines ₂=10mm.Center line along fixed frame 1 distributes to both sides, and the hole of adjacent lines is c along the axial displacement of x ₁=c ₂=c ₃=c ₄=c ₅=c ₆=c ₇=c ₈=c ₉=2mm, thus guarantee that laser instrument can cover the axis on the face of cylinder completely, and laser irradiation does not have coordinate space.

The invention also discloses a kind of method of utilizing the weeding of described laser dot-matrix structure thermal burn, that described laser dot-matrix structure is installed on agricultural machinery, laser instrument is connected with controller, by the weeds position, monitor location on agricultural machinery, by controller, control laser instrument switch corresponding in laser dot-matrix structure again, by the weeding of Emission Lasers thermal burn.

The utility model structural design advantages of simple, can control the switch of corresponding laser instrument according to the particular location of weeds, 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 being very practical.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model 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 utility model;

1-fixed frame; 2-laser instrument; 3-laser instrument hot spot; The curved surface of 5-fixed frame; 6-focuses on straight line;

Fig. 2 is a kind of all standing laser dot-matrix structure Facad structure partial schematic diagram based on thermal burn weeding of the utility model;

Fig. 3 is a kind of all standing laser dot-matrix texture edge structural representation based on thermal burn weeding of the utility model;

Fig. 4 is a kind of all standing laser dot-matrix structural perspective based on thermal burn weeding of the utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is done to further detailed description.

As shown in Figure 1, a kind of all standing laser dot-matrix structure based on thermal burn weeding, is characterized in that, the curved surface 5 of fixed frame 1 is the face of cylinder, and on fixed frame 1, every row is arranged N hole, arranges altogether M capable.The diameter in hole is D ₁, colleague's pitch of holes is d ₁, the pitch of holes d of adjacent lines ₂, guarantee d ₁+ D ₁=MD ₂(can be by changing d ₁value meet this relational expression).Face of cylinder axial length L=(M-1) (d ₁+ D ₁), arc length S >MD ₁+ (M-1) d ₂, the laser diameter that adopts and bore dia equate, the diameter of laser instrument launch spot at distance R place is D ₂.With fixed frame 1 line direction, be made as x direction of principal axis, the laser dot-matrix of arranging on fixed frame 1 is symmetrical about center line, along center line, to both sides, distributes, and there is certain displacement c in the hole of adjacent two row along x direction of principal axis ₁=D ₂thereby, can make the every bit in cylindrical axis have laser instrument hot spot to cover, while guaranteeing laser scans, there is no coordinate space.

As shown in Figure 4, the axis left end on the face of cylinder is initial point, and axis is x direction of principal axis to right, based on Technique for Identification of Weed, by scanner, certain point on x axle detected and have weeds, point coordinates is designated as X (mm of unit), and establishing laser instrument row, column position coordinates on the face of cylinder is Z (m, n), we can pass through weeds position coordinates, determine the laser instrument row, column position coordinates Z (m, n) that need to work, be specifically calculated as follows:

Row-coordinate $m=\left[\frac{X\%(d1+D1)+1}{D2}\right]+1---\left(1\right)$

Row coordinate $n=\left[\frac{X}{(d1+D1)}\right]+1---\left(2\right)$

" [] " is rounding operation symbol herein, and " % " is complementation symbol (if X is decimal, complementation result is also decimal).

Determine the computing formula of the laser instrument row, column position coordinates Z (m, n) that needs work, just can control by controller the switch of certain laser instrument on dot matrix instrument, thereby reach the object of accurate weeding.Along with agricultural machinery moves ahead, by computer control, controlled in good time, can carry out the weeding of all standing thermal burn to whole field.

The utility model 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, every row is arranged M=50 hole, arranges altogether N=20 capable, and the laser dot-matrix of arranging on fixed frame 1 is symmetrical about x direction of principal axis center line, the diameter in hole and laser instrument 2 equal diameters D ₁=10mm, every row adjacent holes spacing d ₁=10mm, the pitch of holes d of adjacent lines ₂=10mm, distributes to both sides along the center line of fixed frame 1, and the hole of adjacent lines is along the axial displacement c of x ₁=c ₂=c ₃=c ₄=c ₅=c ₆=c ₇=c ₈=c ₉=2mm, laser instrument 2 is semiconductor laser, and output wavelength is that 650nm ± 5nm power output is 5mw, and hot spot is D at 600mm place diameter ₂=2mm, with the hole of adjacent lines along the axial displacement c of x ₁equate, to guarantee that laser instrument can cover scanning space completely.

Bring given concrete numerical value into formula (1) and (2), obtain the computing formula of a kind of laser instrument row, column position coordinates Z (m, n) of all standing laser dot-matrix structure based on thermal burn weeding:

Row-coordinate $m=\left[\frac{X\%20+1}{2}\right]+1---\left(3\right)$

Row coordinate $n=\left[\frac{X}{20}\right]+1---\left(4\right)$

For example, by scanner, measure weeds coordinate position X=68.7mm, by laser instrument row, column position coordinates computing formula, can obtain: m=5, n=4, i.e. the 5th row the 4th row laser works; If weeds coordinate position X=96.3mm, 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, and as long as weeds coordinate, at sweep limits 0mm-980mm, has corresponding laser works, guarantees to cover completely.

And a kind of all standing laser dot-matrix structure based on thermal burn weeding of the utility model is for cylinder center line full symmetric, to guarantee having two laser instruments to aim at and weeds position of irradiation at symmetric position place simultaneously, to guarantee to kill completely the object of weeds, can reach better effect.

Claims (4)

1. all standing laser dot-matrix structure based on thermal burn weeding, is characterized in that being comprised of fixed frame (1) and laser instrument (2); Fixed frame (1) is the face of cylinder or other cylinder, on fixed frame (1), there are a plurality of holes, in each hole, be installed with laser instrument (2), laser instrument (2) is at the upper dot matrix that forms of fixed frame (1), and the laser that each laser instrument (2) sends converges in one and focuses on straight line (6).

2. a kind of all standing laser dot-matrix structure based on thermal burn weeding according to claim 1, it is characterized in that, the pitchs of holes of upper adjacent two row of fixed frame (1) are constant, and the constant displacement of Kong Youyi of adjacent two row does not have coordinate space when guaranteeing laser instrument irradiation.

3. a kind of all standing laser dot-matrix structure based on thermal burn weeding according to claim 1, is characterized in that, fixed frame (1) is the face of cylinder; At the upper every row of fixed frame (1), arrange N hole, arrange altogether M capable, the diameter in hole is D ₁; The laser diameter that adopts and bore dia equate, the hot spot of laser instrument (3) diameter is D ₂, with the pitch of holes of a line, be d ₁, the pitch of holes of adjacent lines is d ₂, guarantee d ₁+ D ₁=MD ₂; Face of cylinder axial length L=(N-1) (d ₁+ D ₁), arc length S >MD ₁+ (M-1) d ₂; Direction with fixed frame (1) row is made as x direction of principal axis, and the upper laser dot-matrix of arranging of fixed frame (1) is symmetrical about the center line of dot matrix, along center line, to both sides, distributes, and there is certain displacement c in the hole of adjacent two row along x direction of principal axis ₁=D ₂.

4. a kind of all standing laser dot-matrix structure based on thermal burn weeding according to claim 3, 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; The upper every row of fixed frame (1) is arranged M=50 hole, arranges altogether N=20 capable, and the upper laser dot-matrix of arranging of fixed frame (1) is symmetrical about x direction of principal axis center line, the diameter in hole and laser instrument (2) equal diameters D ₁=10mm, every row adjacent holes spacing d ₁=10mm, the pitch of holes d of adjacent lines ₂=10mm.