KR102097216B1 - Weeds removal system using sunlight - Google Patents

Abstract

The present invention provides a weed removal system using sunlight, comprising: a flat lens which collects sunlight and irradiates the collected sunlight onto the ground in a linear shape or a rectangular shape; a sun tracking unit which measures changes in the sun′s altitude and sun angle such that the collected sunlight is irradiated in a uniform size with respect to the ground while the flat lens is unmoving or moving; a flat lens operating unit comprising a first motor and a second motor, wherein the first motor receives sun angle information transferred from the sun tracking unit to change an angle of the flat lens, and changes the angle of the first lens to a first axis, and the second motor changes the angle of the flat lens to a second axis perpendicular to the first axis; a transport unit which, while the flat lens is elevated from the ground, moves the flat lens, the sun tracking unit, and the flat lens operating unit in one direction, so as to scan the collected sunlight onto the ground; and an integrated control unit which controls each motor of the flat lens operating unit according to the sun angle information transferred from the sun tracking unit, and changes the moving speed of the transport unit according to the intensity of the sunlight.

Description

Weeds removal system using sunlight}

The present invention relates to a weed removal device, and in detail, proposes a new system that can easily remove weeds present in the soil by irradiating precisely concentrated sunlight without using chemicals such as herbicides.

Farming is classified into various types such as grains, vegetables, and fruits depending on the cultivated crops, but most crops are basically processes such as plowing or paddying, fertilizing (creating fields), sowing or planting, preventing pests, spraying pesticides and fertilizers, and harvesting. Is done. In addition, there are cases in which additional steps are required depending on the crop, and operations to control the temperature and humidity of the facility or minimize the influence of wind, etc. are required depending on weather and weather conditions.

In addition to the basic farming process, it is weeds that grow lush from time to time that give farmers great difficulty in the field. From a farming standpoint, weeds are considered to be more harmful than beneficial, because they absorb nutrients from the soil, hinder crop growth, reduce yields, block sunlight, or cause pests, thereby reducing the commodity marketability. Knock down.

Farming that grows crops is often referred to as war against weeds, but weeds are a big headache in terms of improving agricultural productivity, as well as for beginner farmers who have decided to return to their hometowns for a long time.

Weeds are usually grown when weed seeds are blown by the wind (for example, dandelion) and weed seeds buried in the soil grow. In either case, it is very difficult to remove the weeds after they have grown, because weeds are deeply rooted, which makes it difficult to remove them individually, and can remove the weeds and directly damage nearby crops. When weeds begin to emerge from the soil, it is best to prevent weeds from coming out because they require several times the time and energy to remove them.

In addition, it is impossible to completely prevent weeds from coming out, but it is also a good way to suppress them by creating an environment in which it is difficult to come out. The most commonly known method is vinyl mulching, and rice husks and rice straws are sometimes used instead of vinyl. However, vinyl mulching can be applied only to some field crops such as sweet potatoes and potatoes, and a mulching machine is required, and it is difficult to use it universally for various farming including orchards. In addition, weeds often come out of the furrows between mulching, so it is often necessary to gimmae the furrows.

Although it depends on the crop, weeds may not come out well if the furrows between mulching are covered with compost when the seedlings grow to some extent. This is because the compost piled up in the furrow causes salt damage to the weeds and the grass decays. Using compost, we can catch weeds and supply nutrients to crops at once. However, even in this case, if the distance between mulching is too wide, it is difficult to see an effect of suppressing weed growth.

In order to remove weeds growing in a furrow of a field, a furrow mower has been proposed in the past (Public Patent 10-2007-0027152). According to this technique, there is an advantage in that weeding and furrowing for the furrow can be carried out simultaneously with one work machine, but the inconvenience of weeding work every time as weed growth continues.

Due to this difficulty in weed removal, herbicides are inevitably used in many agricultural fields. Herbicides are agents that selectively or non-selectively kill weeds, affecting only certain plant species and affecting most plants. Herbicides have effective aspects in weed removal, but they also have significant side effects, such as contaminating the soil and removing useful microorganisms, thereby reducing the aroma of the crop being grown. In particular, not only labor is increased by repeatedly applying the herbicide, but the deterioration of health caused by the herbicide cannot be ignored. Eco-friendly herbicides have also been developed to compensate for these problems. For example, Patent Registration No. 10-0546890, Patent Publication No. 10-2008-0035780, etc. are eco-friendly herbicides containing wood vinegar, and are mixed with wood vinegar, acetic acid, and brine mixtures to form a sticky electrodeposition solution and additives that improve the weeding function. Has suggested a herbicide. However, herbicides cannot help affecting the crops that are basically cultivated, and there are limitations in fundamentally eliminating the weeding work itself, which is sometimes necessary to spray herbicides.

In addition, agriculture using composting without chemical fertilizers or pesticides and using organic fertilizers to prevent pests by biological means is emerging little by little, but it is still insufficient to spread to all fields of agriculture.

Given this situation, in the cultivation of various agricultural crops, it is necessary to replace the herbicide, which is a chemical required for weeding, and a method for removing weeds before weeding, for example, before sowing, is required. In particular, the use of herbicides reduces the phenomenon of soil microbial destruction and the development of fundamental technologies for organic realization is urgently needed.

The present invention was created under the above technical background, and an object of the present invention is to provide a new method for removing weeds without using a herbicide.

Specifically, an object of the present invention is to provide an eco-friendly weed removal system that does not affect soil microorganisms by replacing chemicals used in weeding.

Another object of the present invention is to provide a system capable of removing weeds in a seed state or a germination state in a short time before weeds grow.

In addition, another object of the present invention is to provide a new weed removal system that effectively removes weeds on large soils while reducing energy consumption and lowers the growth potential of weeds when growing crops before sowing of cultivated crops.

In addition, another object of the present invention is to provide an eco-friendly weed removal system that can contribute to the realization of organic farming while minimizing adverse effects on soil while reducing the working time of the farmer.

Other, other objects and technical features of the present invention will be presented in more detail in the following detailed description.

In order to achieve the above object, the present invention is a flat lens for condensing sunlight and irradiating the ground in a linear or rectangular shape, and so that the condensed sunlight is irradiated at a constant size to the ground while the flat lens is stationary or moving A sun tracking unit that measures changes in sun altitude and sun angle, a first motor that receives sun angle information transmitted from the sun tracking unit, changes the angle of the flat lens, and changes the angle of the flat lens in the first axis And a second motor that changes the angle of the planar lens in a second axis perpendicular to the first axis, and a planar lens, a sun tracking unit, and a planar surface in a state where the planar lens is raised with respect to the ground. A moving unit that moves the lens driving unit in one direction to scan the collected sunlight onto the ground, and the sun angle information transmitted from the sun tracking unit Depending controls the respective motors of the lens driving plane, it provides a weed control system using the sun light including an integrated control unit for changing the moving speed of the delivery according to the amount of light of the sun.

In the present invention, the sun tracking unit may be composed of a plurality of illuminance sensor arrays, and a light blocking hole spaced upwardly in the center of the illuminance sensor array. In this case, the light blocking hole is an opaque body spaced apart from the illuminance sensor array, and is preferably coupled to the end of the transparent pillar formed vertically from the center of the illuminance sensor array.

In addition, in the present invention, the sun tracking unit may change the angle with respect to the sun by rotating about the first axis and the second axis perpendicular to the first axis, and the flat lens driving unit is flat in connection with the rotation of the sun tracking unit It is desirable to change the angle of the lens.

In addition, in the present invention, the planar lens is a thin Fresnel lens, and it is preferable to irradiate sunlight condensed in a linear or rectangular shape on the ground by adjusting the angle, direction, or height with respect to the ground.

On the other hand, the weed removal system of the present invention may further include a solar cell or a battery that supplies power to the flat lens driving unit and the transportation unit.

According to the present invention, it is possible to reduce the labor force to spray the herbicide and suppress the use of the herbicide by removing weeds from the soil and eradicating pests with high temperature heat formed by condensing sunlight, which is natural energy, instead of the chemical herbicide.

In addition, it can be applied to large-scale fields or various agricultural lands to perform weed removal in a short time, and it is possible to reduce repetitive labor for weed removal.

Through the present invention, it is expected to prevent damage to microorganisms in the soil and improve the soil environment to help crop growth, and to greatly contribute to safe food production and realization of organic farming.

1 is a schematic view showing a weed removal system using sunlight of the present invention
2a to 2c are perspective views showing a planar lens using a Fresnel lens and photographs showing the formation of a condensing area of a Fresnel lens.
3 is a plan view showing a planar lens driver
4 is a schematic view showing a solar tracking unit
5 is a plan view showing an array of illumination sensors of the solar tracking unit
Figure 6 is a schematic view showing a state of removing weeds with sunlight through a flat lens
Figure 7 is a photograph showing weeds on the soil
8 is a perspective view showing a wire movement system
9 is a side view showing a part of the wire movement system

The present invention proposes a weed removal system using sunlight by replacing chemicals used in weeding operations.

The weed removal system of the present invention, for example, before the sowing of cultivated crops, before the weeds are still growing on the crop cultivation, the seeds or germination weeds are irradiated with high temperature strong light, which is made of sunlight, by scanning method, Remove weeds in time. Through this removal of weeds using solar heat, while contributing to eco-friendly agriculture while minimizing the impact on useful microorganisms in the soil, it can also contribute to the advancement of agriculture in connection with various organic agriculture.

To this end, the weed removal system of the present invention first includes a lens that can focus using solar heat. This lens uses a planar lens that provides a band-shaped focusing part so that sunlight can be collected to irradiate the collected sunlight over a large area.

In addition, the weed removal system of the present invention is a sun that changes the angle of the planar lens by interlocking with changes in the solar altitude and the sun angle so that the solar heat condensed through the planar lens can maintain a uniform focus even while the system is stationary or moving. It further includes a tracking unit. In addition, a planar lens driver for changing the angle of the planar lens is included in connection with a change in the solar altitude and the sun angle sensed through the sun tracker.

In addition, the weed removal system of the present invention further includes a transport unit so that sunlight condensed through a planar lens can be irradiated to the ground of the soil in a scanning manner, and the transport unit is irrespective of the unevenness of ground conditions even in large-scale soil. It can be configured as a wire movement system to move the entire system in a smooth motion.

Hereinafter, with reference to the drawings for each component of the present invention will be described in more detail through preferred embodiments.

1 schematically shows a weed removal system 100 using sunlight of the present invention. The flat lens 110, the sun tracking unit 120, the control unit 130, and the solar cell 140 are disposed inside the support frame 102 which is disposed on the upper side of the transport unit, which will be described later, while supporting the entire components. The arrangement position and size of each component may be changed as necessary, and may be composed of a combination of a plurality of plate-like structures provided in one frame as a whole. Each of the components is mounted on a support frame and is movable by a separate carrier while being supported. In FIG. 1, a weed removal system is mounted on the wire 40 of the wire movement system as an example of the carrier, which will be described later. . In addition, the control unit controls the angle of the flat lens according to the sun angle information transmitted from the sun tracking unit, and changes the moving speed of the transport unit according to the amount of sunlight.

In the present invention, the planar lens is condensed with sunlight and irradiated to the ground in a linear or rectangular shape, and it is preferable to use a thin, large-area Fresnel lens. Fresnel lens is a type of condensing lens. It is a planar lens implemented by processing multiple refractive surfaces on a single plane to reduce the thickness of the lens. In the past, it was used for lighthouses or searchlights for the purpose of collecting light into a narrow area. In the case of a Fresnel lens in which circular concentric circular refracting surfaces are repeatedly formed, a circular focal point or condensing part is formed. In the present invention, a linear Fresnel lens having a linear refracting surface is formed so as to increase the area of the condensing part and irradiate the soil with a scanning method. To use.

The thin Fresnel lens can be manufactured by casting from plastic, and since it has a small thickness of several millimeters, it has an advantage of reducing weight even in a large size. Unlike typical glass lenses that are made convex and a narrow area circular focal point is formed, linear Fresnel lenses can provide a banded (or rectangular) focal or condensing surface that is light and scan-condensing over a large area of soil. Solar energy can be investigated. Referring to Figure 2a, the planar lens 110 using a linear Fresnel lens has a light shade (110 ') similar to the lens form on the ground according to the irradiation of sunlight, and the light is condensed by the lens inside the band A bright, hot focal region C in the shape is formed.

Figure 2b is a linear planar lens used in an embodiment of the present invention showing a focus area (bright part in the photo) condensed in a band shape on the soil surface, and small weeds in the weed seed or germination state on the soil are short due to the condensing temperature. It was confirmed to burn in time. 2C shows a condensed state of a Fresnel lens having a concentric circular refracting surface for comparison. In the embodiment of Fig. 2c, it can be seen that the temperature of the focal region condensed circularly through the Fresnel lens is very high, so that the branches burn out quickly and the weeds on the soil burn with smoke in an instant.

By changing the area and processing form of the Fresnel lens, the solar energy concentration can be changed and high-power solar heat can be collected. By adjusting the angle, direction, or height of the Fresnel lens, a linear or rectangular condensing form can be applied to the ground. You can also change or control the temperature of the condensed sunlight. For example, when the temperature of the focal region is excessively high, the focusing distance can be adjusted so that a condensing surface having a rectangular shape rather than a band shape is formed on the ground, and the focal length is varied to adjust the size of the condensing surface and 200 ~ If the condensing temperature in the 300 ° C range is maintained, all small weeds can be burned and removed in 0.5 to 2 seconds. The size of the planar lens may vary depending on the area of the soil or arable land where weeds will be removed. For example, a lens of 1.5 to 3 m long and 1.0 to 2 m wide may be used.

It is preferable in terms of work efficiency and weed removal effect that the sunlight collected through the planar lens maintains a constant shape with respect to the soil surface during weed removal. To this end, the weed removal system of the present invention measures changes in sun altitude and sun angle through a sun tracker, so that the flat lens is irradiated with sunlight focused at a constant size to the ground while stationary or moving.

In addition, through the information measured through the sun tracker, the angle of the flat lens is changed so that the flat lens is always perpendicular to the sun irradiation angle while maintaining a condensing surface or focal region in a temperature range capable of weed removal on the soil surface. A drive is required. To this end, the weed removal system of the present invention receives the sun angle information transmitted from the sun tracker and changes the angle of the flat lens in the first axis, and the flat lens in the second axis perpendicular to the first axis. It further includes a planar lens driver including a second motor for changing the angle of. 3 is a plan view showing a planar lens driving unit, in order to rotate the planar lens 110 with respect to the first axis A1, the first rotating shaft 151a and the first motor 151b are provided in the first frame 112. It is mounted, and the second rotating shaft 152a and the second motor 152b are mounted on the second frame 114 to rotate the planar lens about the second shaft A1. By rotating the flat lens around two axes, the angle of the flat lens can be changed in response to the irradiation angle of sunlight, and the flat lens surface can be maintained perpendicular to the sunlight. On the other hand, it is possible to change the angle of the flat lens with respect to the irradiation angle of sunlight by rotating only two axes, but if necessary, change the angle of the flat lens around the third axis or increase the vertical height of the flat lens in the vertical direction with respect to the ground. A driving means for changing may be further provided.

Whether or not the planar lens is rotated is determined according to the solar irradiation angle measurement information of the solar tracking unit. The sun tracking unit may rotate the first axis and the second axis perpendicular to the first axis to change the angle with respect to the sun, similar to the planar lens, and the planar lens driving unit may rotate the sun of the sun tracking unit to form a flat lens. The angle changes.

To this end, the flat lens driving unit may be designed in the support frame 102 so that the flat lens and the sun tracking unit can be rotated together in the first and second axis directions. In addition, in order to reduce the weight of the entire system, when the planar lens driving unit is designed to rotate only the planar lens in consideration of the motor output and size, the solar tracking unit is provided in the first axis (eg X axis) and second axis direction (eg For example, it is preferable that a driving unit capable of rotating in the Y axis) is separately provided. In any case, it is preferable that the rotation for adjusting the angle of the flat lens and the rotation for the angle change of the sun tracker are interlocked, and the tilt of the flat lens and the sun tracker relative to the solar irradiation angle or soil surface is always the same. It is more preferable.

4 is a schematic view showing a solar tracking unit, and FIG. 5 is a plan view showing an illumination sensor array of the solar tracking unit. The sun tracking unit is composed of a plurality of illuminance sensors (refer to the small square structures in FIG. 5) and an illuminance sensor array arranged in a grid shape, and a light blocking hole 122 spaced upwardly in the center of the illuminance sensor array. A CDS sensor can be used as the illuminance sensor, and a plurality of illuminance sensors are arranged at regular intervals on the top surface of a flat frame. The shading hole forms a shadow 122 'on the surface of the sun tracker from the sunlight S, and the position of the shadow formed on the surface of the sun tracker changes according to a change in solar altitude or sun angle. The light blocking hole is an opaque body spaced apart from the illuminance sensor array, and can be coupled to the end of the transparent pillar 123 formed vertically from the center of the illuminance sensor array.

The change in the resistance value generated by the light intensity sensor by the shading formed by the light shielding hole is measured, so that the position of the shadow is located in the center of the sun tracking unit, that is, the center of the illuminance sensor becomes the reference point, and the irradiation angle of the sun and the surface of the solar tracking unit The angle of the sun tracker is changed to be perpendicular to this, and the planar lens driver is operated in conjunction with this to change the flat lens to be perpendicular to the irradiation angle of sunlight.

Referring to FIG. 5, when a shade of a light shielding hole is formed on the solar tracking unit illuminance sensor array on the illuminance sensor 120R located at the lower left, the resistance value of the corresponding sensor is changed, and the remaining illuminance sensors of the illuminance sensor array are the same. Maintain the resistance value. After receiving the resistance value information of the solar sensor array and the coordinate information of the sensor from the control unit 130, the solar tracking unit is rotated until a change in the resistance value of the central illumination sensor 120C occurs. For example, when the coordinates of the shading illuminance sensor are x-axis +4 and y-axis -6, the sun moves so as to move by -4 in the x-axis direction and +6 in the y-axis direction to form a shadow in the central illuminance sensor. Rotate the tracer.

The illumination sensor without shading has the same resistance value according to the change in solar altitude or angle, and the shaded illuminance sensor changes the resistance value, so it is easy to track the change in solar angle. Real-time tracking of changes in the resistance value of the illumination sensor array due to the shading of the light-shielding hole deviating from the central illumination sensor, and rotating the sun tracker in the first and second axis directions as much as the desired coordinate value, and rotating the flat lens in conjunction with this By doing so, the planar lens surface can always be maintained perpendicular to the irradiation angle of sunlight, and it is possible to form a uniform condensing area on the soil surface during movement as well as the stationary state of the planar lens.

As the solar altitude and the angle of the sun are easily tracked through the solar tracking unit, the weed removal system of the present invention does not require complicated instrument design or expensive equipment, and may be implemented as a small system so that it can be easily used in agricultural fields. . 6 is a schematic view showing the removal of weeds with sunlight through a planar lens, while the sunlight is irradiated, the angle of the planar lens is adjusted so that focus is formed on the soil surface, and the heat of the high temperature in the focal region is the soil surface Weeds, weed seeds and pests are burned and removed. Plant moisture does not withstand temperatures above 100 ° C, so weeds can be removed with solar heat condensed through a flat lens, and weeds that have grown must be irradiated for a relatively long time with high-temperature sunlight condensed with a lens, so weed seeds It is more efficient to remove when in a state or in an early germination state. FIG. 7 is a photograph showing a small weed in a germinated state on the soil, and the initial weed or seed having a low moisture content can be removed by condensing solar heat at a high temperature within a short time. Therefore, it is more effective to perform the work through the weed removal system of the present invention before sowing of cultivated crops on arable land.

In addition, when burning weed seeds or germinated weeds on the surface of the soil, it is irradiated as the high-temperature sunlight collected through a flat lens scans through as it scans, so that the heat inside the soil with small thermal conductivity does not reach the high temperature heat. As a result, it does not affect useful microorganisms in the soil. Therefore, the weed removal system of the present invention has the advantage of selectively removing only weeds from the soil surface that has been plowed with a tractor or the like while minimizing the positive factors that the soil has on crop cultivation.

In order to quickly remove weeds on a wide range of soil, such as farmland, a planar lens and a means to move the sun tracker together are required. In addition, there is a need to control the rotational motion of the planar lens according to the movement of the system and sun tracking.

To this end, the weed removal system of the present invention moves the flat lens, the sun tracking unit, and the flat lens driving unit in one direction while the flat lens is raised with respect to the ground, and carries a carrier that scans the collected sunlight onto the ground. It further includes a control unit 130 for controlling each motor of the flat lens driving unit according to the sun angle information transmitted from the sun tracking unit and changing the moving speed of the transport unit according to the amount of light of the sun.

As illustrated in FIG. 1, the control unit may be disposed on the support frame together with other components such as a planar lens and a sun tracking unit, but in the case of the transport unit, a lower or separate arrangement design of the support frame is required. The transport unit may use, for example, a driving body including a driving wheel in the form of a general wheel, but if the soil surface is uneven or inclined, impact or height change transmitted to the driving wheel may interfere with the formation of the focal region of the flat lens. It may be, and the control circuit configuration for compensating for such a change factor may be complicated.

Therefore, in a preferred embodiment of the present invention, when the flat lens is moved through the wire moving system previously developed by the present inventor, the solar condensing area is moved in one direction while floating in the air so that impact from the ground is not transmitted. We propose a carrier that can be investigated by scanning method. Such a wire movement system can be carried out to irradiate a solar condensing area in a short time for a large area of soil by floating the system at a constant height from a soil surface such as an agricultural land and moving it at a desired distance without any resistance in the air.

8 and 9 are a perspective view and a side view showing a wire moving system as a transport unit. The wire moving system includes a fixing table 10, a first direction moving guide part 20, a first direction moving cart 30, a second direction moving guide part 40, and a weed removal system 100. The fixing table 10 is installed at the boundary of the farmland G, such as a rice field or a field in which crops are cultivated. In this embodiment, the weed removal system is expressed in a small size for convenience, but in reality, a system having a large area in the horizontal direction is mounted on the upper portion of the second direction movement guide in consideration of the size of the planar lens. The fixing table 10 is formed in a pipe shape, and a plurality of arranging lands G is arranged in accordance with the shape of the arable land G on one side of the border and opposite borders thereof. A plurality of anchors (10A) are spaced apart at regular intervals on the left border of the arable land (G), and a plurality of anchors (10B) are spaced apart at regular intervals at the right border of the arable land (G).

The first direction movement guide part 20 is installed to guide the movement of the first direction movement vehicle 30 in the first direction (Y direction in FIG. 8) on the plurality of fixtures 10. The first direction movement guide part 20 may be formed in a rail shape, and even a shape other than this can be replaced if it can guide the movement of the first direction movement cart 30. The first direction movement guide part 20 is a pair of one pair (組), is installed on each side and the other side of the fixture (10A, 10B). Further, the first direction moving cart 30 is on the first direction moving cart 30 on one side and the first direction moving guide section 20B on the other side, which is installed on the first direction moving guide unit 20A on one side. The other side of the installed first direction moving cart 30 is paired. The pair of first direction moving carts 30 may move on the first direction moving guide part 20 in the same direction and speed with each other, and may be made in different directions or at different speeds depending on the shape of the arable land G. Operation is individually controlled to move on the one-way movement guide portion 20.

The first direction moving cart 30 includes a first direction moving body movably mounted on the first direction moving guide part 20, and a first direction rotating part rotatably installed on a rotation axis of the first direction moving body ( 35). A pair of wires 40A and 40B, which are second direction movement guide parts 40 in which the weed removal system 100 moves in the X direction, is installed in the first direction rotation part 35, respectively. The second direction movement guide part 40 connects a pair of first direction movement carts 30 facing each other. If the first direction movement guide part 20 is arranged in the longitudinal direction (Y direction) of the arable land G, the second direction movement guide part 40 is arranged in the width direction (X direction) of the arable land G. In the case of arable land arranging and arranging the square, the first direction movement guide part 20 and the second direction movement guide part 40 may be arranged in a direction orthogonal to each other. The second direction movement guide part 40 is designated in the Y direction according to the position of the pair of first direction movement carts 30 disposed on the first direction movement cart 30. The second direction movement guide part 40 guides the movement of the second direction (the X direction in FIG. 8) of the weed removal system 100.

The second direction movement guide part 40 is wound or unwound on a reel member installed in the first direction rotation part 35. The second direction movement guide part 40 must be provided with a predetermined tension or higher for the movement of the weed removal system 100 to be mounted, and accordingly, the second direction according to the interval of the pair of first direction movement carts 30 The moving guide part 40 is tensioned while being wound or unwound on the reel member.

In this embodiment, the pair of first direction moving carts 30 removes weeds by irradiating sunlight condensed on the soil surface while moving at the same distance from each other in the Y direction. When the irradiation length of the Y-axis direction of the sunlight condensing area formed by the planar lens in the weed removal system 100 is, for example, a, the pair of first-direction traveling carts 30 advances in the X-axis direction while being flat lens After irradiating the sunlight condensed by the arable land G, the weed removal operation for the next area of the arable land G may be performed while moving in the Y direction by a unit irradiation length (a) and retracting in the X-axis direction. Thus, while repeating the forward and backward movements in the X-axis direction, the unit irradiation length is moved larger in the Y-axis direction, so that weeds can be effectively removed in a short time over a wide area.

For details of the operation and structure of such a wire movement system, refer to Patent Application No. 2017-0182319 filed by the present inventor (name of the invention: automatic agricultural equipment and automatic movement system).

The weed removal system of the present invention can be equipped with a photometer for solar measurement to control the movement speed of the wire movement system according to the amount of sunlight, and when dark, add a circuit of the control unit to stop the movement operation of the weed removal system It can also be configured as. Particularly, it is preferable to control the formation of a condensing surface of a certain temperature range in consideration of the difference between the solar altitude and the amount of solar light according to weather and season through a photometer, and it is also possible to calculate the movement speed of the appropriate condensing surface and the area of the condensing area have.

In addition, in the weed removal system of the present invention, the motor for rotation of the flat lens does not require much power because it is sufficient to operate at a low speed, and a battery may be installed to supply power when working outdoors, but the weight of the entire system In consideration of the increase, the solar cell 140 may be disposed along with other components on the support frame as illustrated in FIG. 1.

The present invention has been exemplarily described through preferred embodiments, but the present invention is not limited to such specific embodiments, and various forms within the scope of the technical idea, specifically, the claims described in the present invention. Can be modified, changed, or improved.

100: weed removal system 102: support frame
110: flat lens 120: solar tracking unit
122: light blocker 123: transparent pillar
130: control unit 140: solar cell
151a: 1st coaxial 151b: 1st motor
152a: Second coaxial 152b: Second motor

Claims (5)

A flat lens that condenses sunlight and irradiates the ground in a linear or rectangular shape;
A solar tracking unit that measures changes in solar altitude and solar angle so that the flat lens is irradiated with a fixed amount of sunlight to the ground while stationary or moving,
A first motor for changing the angle of the flat lens by receiving the sun angle information transmitted from the sun tracking unit, and changing the angle of the flat lens in the first axis, and the flat lens in the second axis perpendicular to the first axis A planar lens driving unit including a second motor for changing the angle of,
The flat lens is moved with respect to the ground, the flat lens, the sun tracking unit, and the flat lens driving unit in one direction to move the condensed sunlight to the ground (운반), and
It includes an integrated control unit for controlling each motor of the planar lens driving unit according to the solar angle information transmitted from the sun tracking unit, and changing the moving speed of the transport unit according to the amount of the sun,
The sun tracking unit is composed of a plurality of illuminance sensor arrays, and a light blocking hole spaced upwardly in the center of the illuminance sensor array.
Weed removal system using sunlight.
delete According to claim 1,
The planar lens is a thin Fresnel lens, and weed removal system using sunlight, characterized by irradiating sunlight collected in a linear or rectangular shape on the ground by adjusting the angle, direction, or height with respect to the ground.
According to claim 1,
Weed removal system using sunlight, characterized in that it further comprises a solar cell or a battery for supplying power to the flat lens driving unit and the transport unit.
According to claim 1,
The light blocking hole is an opaque body spaced from the illuminance sensor array, the weed removal system using sunlight, characterized in that coupled to the end of the transparent column formed vertically from the center of the illuminance sensor array.

Images