CN110326600B - Wind speed regulating and controlling device and method - Google Patents
Wind speed regulating and controlling device and method Download PDFInfo
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- CN110326600B CN110326600B CN201910705054.0A CN201910705054A CN110326600B CN 110326600 B CN110326600 B CN 110326600B CN 201910705054 A CN201910705054 A CN 201910705054A CN 110326600 B CN110326600 B CN 110326600B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- 230000001276 controlling effect Effects 0.000 title description 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 127
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 4
- 101100350185 Caenorhabditis elegans odd-1 gene Proteins 0.000 claims description 2
- 239000000575 pesticide Substances 0.000 abstract description 12
- 235000013399 edible fruits Nutrition 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004148 unit process Methods 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002420 orchard Substances 0.000 description 1
- 239000010914 pesticide waste Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0089—Regulating or controlling systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Catching Or Destruction (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The application discloses a wind speed regulating device and a method, comprising the following steps: the control device is electrically connected with the stepping motor, the controllable air outlet is communicated with an air conveying pipe of the fan, the controllable air outlet comprises a movable side plate, a connecting rod is arranged in the controllable air outlet, one end of the connecting rod is fixedly connected with the inner wall of the movable side plate, the other end of the connecting rod is fixedly connected with one end of a transmission rack, and the transmission rack is movably connected with an output shaft of the stepping motor through the transmission device. In the process of applying the pesticide to the fruit trees, the air quantity of the air delivery pipe of the fan is kept unchanged when the plant canopy with the same volume is detected, if the measured leaf area indexes of the plant canopy are different, the air speed of pesticide application needs to be adjusted, the stepping motor is controlled by the control device to drive the transmission device to act so as to drive the transmission rack to move, the transmission rack pulls the connecting rod to drive the movable side plate to move, the area of the controllable air outlet is changed, and then the air speed is adjusted.
Description
Technical Field
The application relates to the technical field of agricultural equipment, in particular to a wind speed regulating device and a wind speed regulating method.
Background
In the orchard plant protection operation, continuous fixed parameter operation is required to be carried out so as to ensure the normal growth of fruit trees. Most of pesticide spraying in plant protection operation in the prior art is manually sprayed, so that the operation efficiency is low, and in order to solve the problems, the operation efficiency is improved by mechanical spraying.
However, the existing mechanical spraying is quite common in that the wind speed during the spraying of the medicines cannot be effectively regulated and controlled, so that the pesticide utilization rate is low, most of the pesticide liquid drifts in the air or is deposited on the ground after being sprayed, and the pesticide is wasted and the environment is polluted. Especially for fruit trees, the characteristics of different plant canopy volumes and leaf area indexes and the like at different positions of the fruit trees are different, if the spraying quantity of part of canopy is caused, and the pest control of part of canopy is insufficient, the pesticide waste is caused, and the fruit quality is also influenced.
Disclosure of Invention
In order to solve the technical problems, the application provides the following technical scheme:
in a first aspect, an embodiment of the present application provides a wind speed regulation device, including: the control device is electrically connected with the stepping motor, the controllable air outlet is communicated with an air conveying pipe of the fan, the controllable air outlet comprises a movable side plate, a connecting rod is arranged in the controllable air outlet, one end of the connecting rod is fixedly connected with the inner wall of the movable side plate, the other end of the connecting rod is fixedly connected with one end of a transmission rack, and the transmission rack is movably connected with an output shaft of the stepping motor through the transmission device.
By adopting the implementation mode, in the process of applying the pesticide to the fruit trees, the air quantity of the air delivery pipe of the fan is kept unchanged, if the air speed of the pesticide application needs to be regulated, the stepping motor is controlled by the control device to drive the transmission device to act so as to drive the transmission rack to move, the transmission rack pulls the connecting rod to drive the movable side plate to move, the change of the area of the controllable air outlet is realized, and then the regulation of the air speed is realized.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the movable side plate includes a first movable side plate and a second movable side plate that are symmetrically arranged, the connecting rod includes a Y-shaped connecting rod, a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected with an inner wall of the first movable side plate, and the other end of the first connecting rod is movably connected with a first end of the Y-shaped connecting rod; one end of the second connecting rod is fixedly connected with the inner wall of the second movable side plate, and the other end of the second connecting rod is movably connected with the second end of the Y-shaped connecting rod; and the third end of the Y-shaped connecting rod is fixedly connected with one end of the transmission rack. The Y-shaped connecting rod is driven to move through the movement of the transmission rack, and the first connecting rod and the second connecting rod are driven to move when the Y-shaped rod moves, so that the first movable side plate and the second movable side plate move towards two sides or move towards each other, and the air outlet area of the controllable air outlet is changed.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the controllable air outlet includes an air outlet connecting piece, a hinge is disposed between the first movable side plate and the second movable side plate and the air outlet connecting piece, and the first movable side plate and the second movable side plate are movably connected with the air outlet connecting piece through the hinge. The air outlet connecting piece is divided into three parts, wherein the round part of one end is fixedly connected with the round air outlet of the fan, the square part is movably connected with the first movable side plate and the second movable side plate through hinges, the middle part is an airflow transition part, and the influence of airflow change is reduced.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, a rubber cover is further provided on the air outlet connecting piece, and two ends of the rubber cover are fixedly connected with the first movable side plate and the second movable side plate respectively. When the first movable side plate and the second movable side plate are controlled to move, the rubber cover is deformed along with the movement of the first movable side plate and the second movable side plate, the air outlet area of the whole controllable air outlet is changed, and then the change of the air speed is realized.
With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the transmission device includes a first transmission gear and a second transmission gear, the first transmission gear is fixedly connected with an output shaft of the stepper motor, and the second transmission wheel is respectively meshed with the first transmission wheel and the transmission rack. The output shaft of the stepping motor rotates to drive the first transmission gear to rotate, and the second transmission gear is respectively meshed with the first transmission gear and the transmission rack, so that when the first transmission gear drives the second transmission gear to rotate, the second transmission gear drives the transmission rack to move.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the first transmission gear and the second transmission gear are disposed in a transmission cover, the transmission cover is fixedly connected with the air outlet connector, the first transmission gear and the second transmission gear are movably connected with the transmission cover through a transmission column, and a friction bearing is disposed between the transmission column and the transmission cover. The transmission cover can protect the transmission gear and prevent external objects from entering the transmission gear to influence the rotation of the transmission gear. And a friction bearing is arranged between the transmission column and the transmission device cover, so that friction between the transmission column and the transmission device cover is reduced.
With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the control device includes an MCU and a laser sensor, the MCU includes a computing unit and a control unit, the computing unit is electrically connected to the laser sensor, and the control unit is electrically connected to the computing unit and the stepper motor, respectively. The calculation unit receives sensor data sent by the laser sensor, can calculate the current plant canopy leaf area index, sends the determined current plant canopy leaf area index to the control unit, and the control unit judges and further determines and controls the rotation direction of the output shaft of the stepping motor, controls the movement direction of the movable side plate, changes the air outlet area of the controllable air outlet, and further regulates and controls different air speeds according to different current plant canopy leaf area indexes.
In a second aspect, an embodiment of the present application provides a wind speed regulation method, and the wind speed regulation device adopting the first aspect or any implementation manner of the first aspect, where the method includes: a laser sensor in the control device acquires the current plant canopy leaf area index and transmits the current plant canopy leaf area index to a computing unit of the MCU for processing; the calculation unit sends the processing result to the control unit of the MCU after processing according to the current plant canopy leaf area index, and the control unit controls the stepping motor to act according to the processing result to drive the movable side plate to move, so as to change the air outlet area of the controllable air outlet and adjust the air speed of the controllable air outlet.
With reference to the second aspect, in a first possible implementation manner of the second aspect, after the calculating unit processes according to the current plant canopy leaf area index, the calculating unit sends a processing result to the control unit of the MCU, and the control unit controls the stepper motor to act according to the processing result to drive the movable side plate to move, change an air outlet area of the controllable air outlet, and adjust an air speed of the controllable air outlet, including: if the current plant canopy leaf area index B 1 When the air quantity of the controllable air outlet is larger than the preset leaf area index, the air speed is increased, the width of the controllable air outlet is set to be larger than or equal to 0.05m, and the air speed of the controllable air outlet is setAlternatively, if the current plant canopy leaf area index B 1 When the air quantity of the controllable air outlet is smaller than the preset leaf area index, the air speed is reduced, the air speed of the controllable air outlet is set to be larger than or equal to 12m/s, and the air speed of the controllable air outlet is +.>Wherein: b (B) 0 For reference leaf area index of plant canopy, +.>k s S is the air outlet coefficient 0 S is the area of the controllable air outlet when the first movable side plate and the second movable side plate are parallel to the transmission rack, S is the area of the current controllable air outlet, A 0 For reference of the number of laser returns of plant canopy A 1 The number of lasers returned by the current plant canopy.
Drawings
FIG. 1 is a schematic structural diagram of a wind speed control device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a controllable air outlet according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a transmission device according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a control device of a transmission device according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating the area reduction of the controllable air outlet according to an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating an increase in the area of an air outlet of a controllable air outlet according to an embodiment of the present application;
FIG. 7 is a schematic flow chart of a method for regulating and controlling wind speed according to an embodiment of the present application;
in fig. 1-7, the symbols are represented as:
the device comprises a 1-stepping motor, a 2-controllable air outlet, a 3-transmission rack, a 4-transmission device, a 5-first movable side plate, a 6-second movable side plate, a 7-Y-shaped connecting rod, an 8-first connecting rod, a 9-second connecting rod, a 10-air outlet connecting piece, an 11-hinge, a 12-rubber cover, a 13-first transmission gear, a 14-second transmission gear, a 15-transmission device cover, a 16-transmission column and a 17-friction bearing.
Detailed Description
The present application is described below with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a wind speed regulating device provided by the embodiment of the application, referring to fig. 1, the wind speed regulating device provided by the embodiment of the application comprises a control device (not shown in the figure), a stepping motor 1 and a controllable air outlet 2, wherein the control device is electrically connected with the stepping motor 1, the controllable air outlet 2 is communicated with a fan air delivery pipe, the controllable air outlet 2 comprises a movable side plate, a connecting rod is arranged in the controllable air outlet 2, one end of the connecting rod is fixedly connected with the inner wall of the movable side plate, the other end of the connecting rod is fixedly connected with one end of a transmission rack 3, and the transmission rack 3 is movably connected with an output shaft of the stepping motor 1 through a transmission device 4. In the process of applying the pesticide to the fruit trees, the air quantity of the air delivery pipe of the protection fan is unchanged, if the air speed of the pesticide application needs to be adjusted, the stepping motor 1 is controlled by the control device to drive the transmission device 4 to act so as to drive the transmission rack 3 to move, the transmission rack 3 pulls the connecting rod to drive the movable side plate to move, the area of the controllable air outlet is changed, and then the air speed is adjusted.
Further, referring to fig. 2, the movable side plates include a first movable side 5 and a second movable side plate 6 which are symmetrically arranged, the connecting rods include a Y-shaped connecting rod 7, a first connecting rod 8 and a second connecting rod 9, one end of the first connecting rod 8 is fixedly connected with the inner wall of the first movable side plate 5, and the other end of the first connecting rod 8 is movably connected with the first end of the Y-shaped connecting rod 7. One end of the second connecting rod 9 is fixedly connected with the inner wall of the second movable side plate 6, and the other end of the second connecting rod 9 is movably connected with the second end of the Y-shaped connecting rod 7. The third end of the Y-shaped connecting rod 7 is fixedly connected with one end of the transmission rack 3. The Y-shaped connecting rod 7 is driven to move through the movement of the transmission rack 3, and the first connecting rod 8 and the second connecting rod 9 are driven to move when the Y-shaped rod 7 moves, so that the first movable side plate 5 and the second movable side plate 6 move towards two sides or move towards each other, and the air outlet area of the controllable air outlet is changed.
In this embodiment, the controllable air outlet includes an air outlet connector 10, a hinge 11 is disposed between the first movable side plate 5 and the second movable side plate 6 and the air outlet connector 10, and the first movable side plate 5 and the second movable side plate 6 are movably connected with the air outlet connector 10 through the hinge 11. Wherein, air outlet connecting piece 10 divide into three part, and wherein the circular part of one end and the circular air outlet fixed connection of fan, square part pass through hinge 11 and first movable curb plate 5 and the movable curb plate 6 swing joint of second, and the mid portion is the air current transition part, reduces the influence of air current change.
With further reference to fig. 1, the air outlet connector is further provided with a rubber cover 12, and two ends of the rubber cover 12 are fixedly connected with the first movable side plate 5 and the second movable side plate 6 respectively. When the first movable side plate 5 and the second movable side plate 6 are controlled to move, the rubber cover 12 is deformed, the air outlet area of the whole controllable air outlet is changed, and then the change of the air speed is realized.
Referring to fig. 3, the transmission device 4 includes a first transmission gear 13 and a second transmission gear 14, the first transmission gear 13 is fixedly connected with the output shaft of the stepper motor 1, and the second transmission gear 14 is respectively meshed with the first transmission gear 13 and the transmission rack 3. The output shaft of the stepping motor 1 rotates to drive the first transmission gear 13 to rotate, and the second transmission gear 14 drives the transmission rack 3 to move when the first transmission gear 13 drives the second transmission gear 14 to rotate because the second transmission gear 14 is respectively meshed with the first transmission gear 13 and the transmission rack 3.
In this embodiment, in order to realize protection of the transmission gear, external objects are prevented from entering the transmission gear, and rotation of the transmission gear is prevented from being affected. The first transmission gear 13 and the second transmission gear 14 are arranged in a transmission device cover 15, and the transmission device cover 15 is fixedly connected with the air outlet connecting piece 10. The first transmission gear 13 and the second transmission gear 14 are movably connected with the transmission device cover 15 through a transmission column 16, and a friction bearing 17 is arranged between the transmission column 16 and the transmission device cover 15. The provision of friction bearings 17 reduces friction between the drive post 16 and the transmission housing 15.
In order to realize accurate control of the spraying amount according to the current plant canopy leaf area index, referring to fig. 4, in this embodiment, the control device includes an MCU and a laser sensor, where the MCU includes a calculation unit and a control unit, the calculation unit is electrically connected with the laser sensor, and the control unit is respectively electrically connected with the calculation unit and the stepper motor.
The calculation unit receives sensor data sent by the laser sensor, can calculate the current plant canopy leaf area index, sends the determined current plant canopy leaf area index to the control unit, and the control unit judges and further determines and controls the rotation direction of the output shaft of the stepping motor, controls the movement direction of the movable side plate, changes the air outlet area of the controllable air outlet, and further regulates and controls different air speeds according to different current plant canopy leaf area indexes.
Referring to fig. 5 and 6, the air outlet areas of the controllable air outlets are respectively reduced and increased, and the air output of the air outlets is kept unchanged in two states, so that the air speed is greater in the state of fig. 5 than in the state of fig. 6. It should be noted that in the state of fig. 5, the width of the controllable air outlet is ensured to be greater than or equal to 0.05m, while in the state of fig. 6, the wind speed of the controllable air outlet is ensured to be greater than or equal to 12m/s.
As can be seen from the above embodiments, the present embodiment provides a wind speed regulating device, including: the automatic air supply device comprises a control device, a stepping motor 1 and a controllable air outlet 2, wherein the control device is electrically connected with the stepping motor 1, the controllable air outlet 2 is communicated with a fan air conveying pipe, the controllable air outlet 2 comprises two symmetrically arranged movable side plates, a Y-shaped connecting rod 7 and a first connecting rod 8 and a second connecting rod 9 which are connected with the two movable side plates are arranged in the controllable air outlet, one ends of the first connecting rod 8 and the second connecting rod 9 are fixedly connected with the inner walls of the corresponding movable side plates respectively, the other ends of the first connecting rod 8 and the second connecting rod 9 are movably connected with the Y-shaped connecting rod 7 respectively, the Y-shaped connecting rod 7 is fixedly connected with one end of a transmission rack 3, and the transmission rack 3 is movably connected with an output shaft of the stepping motor 1 through a transmission device 4. In the process of applying the pesticide to the fruit trees, the air quantity of the air delivery pipe of the fan is kept unchanged when the plant canopy with the same volume is detected, if the measured leaf area indexes of the plant canopy are different, the air speed of pesticide application needs to be adjusted, the stepping motor 1 is controlled by the control device to drive the transmission device 4 to act so as to drive the transmission rack 3 to move, the transmission rack pulls the Y-shaped connecting rod 7, the Y-shaped connecting rod 7 drives the two movable side plates to move through the first connecting rod 8 and the second connecting rod 9, the change of the area of the controllable air outlet is realized, and then the air speed adjustment is realized.
Corresponding to the wind speed regulating device provided by the embodiment, the application further provides an embodiment of a wind speed regulating method. Referring to fig. 7, the method includes:
s101, a laser sensor in the control device acquires the current plant canopy leaf area index and transmits the current plant canopy leaf area index to a computing unit of the MCU for processing.
The laser sensor can obtain the current plant canopy leaf area index according to the number of laser return pointsWherein B is 0 For reference of leaf area index of plant canopy, A 0 For reference of the number of laser returns of plant canopy A 1 The number of lasers returned by the current plant canopy.
S102, after the calculation unit processes according to the current plant canopy leaf area index, the calculation unit sends a processing result to the control unit of the MCU, and the control unit controls the stepping motor to act according to the processing result to drive the movable side plate to move, so that the air outlet area of the controllable air outlet is changed, and the air speed of the controllable air outlet is adjusted.
If the current plant canopy leaf area index B 1 When the air quantity of the controllable air outlet is larger than the preset leaf area index, the air speed is increased, the width of the controllable air outlet is set to be larger than or equal to 0.05m, and the air speed of the controllable air outlet is set
If the current plant canopy leaf area index B 1 When the air quantity of the controllable air outlet is smaller than the preset leaf area index, the air speed is reduced, the air speed of the controllable air outlet is set to be larger than or equal to 12m/s, and the air speed of the controllable air outlet is set to be larger than or equal to 12m/s
k s The present embodiment is the air outlet coefficientIn the example, the coefficient takes a value of 1.2.S is the area of the controllable air outlet when the first movable side plate and the second movable side plate are parallel to the transmission rack.
In particular, the method comprises the steps of,
and according to the measured canopy volume and leaf area index, the wind speed of the air outlet is adjusted. Wherein the number of teeth of the transmission gear of the first stepping motor is n 1 The number of teeth of the second transmission gear is n 2 Diameter of reference circle d 0 And the stepping angle of the stepping motor is n 0 When the MCU generates y pulses, the travelling distance d of the rack is
Supposing that when the first movable side plate and the second movable side plate on two sides are parallel to the transmission rack, the length of the two connecting rods is L, the vertical distance from the connecting point of the connecting rods and the movable side plates to the hinge is k, at the moment, the width of the air outlet is m, the length is R, and the length of the hard rubber sleeve is L p When the connecting rod moves inwards and outwards, the included angle alpha between the moving back and the moving back of the connecting rod is as follows:
wherein: a=km and,
wherein, wherein: flc is a rack motion function, odd 1 when the rack moves inward and even 0 when the rack moves outward.
In the actual operation process of the field, the laser sensor continuously scans plant canopy on two sides of the vehicle body, the returned distance value and the laser point number are returned to the calculation unit, the calculation unit performs corresponding processing to obtain detailed volume and leaf area index information of the plant canopy, the MCU performs secondary cutting according to specific information and makes corresponding instructions to the control unit, the control unit outputs corresponding control pulses to control the stepping motor to rotate, an output shaft of the stepping motor sequentially transmits power to the first transmission gear, the second transmission gear, the transmission rack and the Y-shaped connecting rod, and finally the Y-shaped connecting rod transmits power to the first movable side plate and the second movable side plate through the first connecting rod and the second connecting rod, so that the change of the area of the controllable air outlet is realized through rotation of the stepping motor, and the air outlet speed is changed under the condition that the air outlet air quantity is not changed.
When the leaf area index of the measured plant canopy is smaller than the preset leaf area index, the wind speed of the controllable air outlet becomes smaller, the phenomenon that liquid medicine drops are blown away from the target canopy due to overlarge wind speed of the controllable air outlet can be prevented, and environmental pollution is reduced. When the leaf area index of the measured plant canopy is larger than the preset leaf area index, the wind speed of the controllable wind outlet becomes larger, and the phenomenon of insufficient penetrating power of liquid medicine liquid drops caused by too small wind outlet speed of the controllable wind outlet can be reduced. The air outlet area of the controllable air outlet is changed, so that the air speed of the controllable air outlet is changed, the problem that the penetrating power of part of the canopy liquid medicine is insufficient is solved, and the problem that part of the liquid medicine is blown off the target canopy and drifts to the air to cause environmental pollution is solved.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Of course, the above description is not limited to the above examples, and the technical features of the present application that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical aspects of the present application and are not intended to limit the present application, but the present application has been described in detail with reference to the preferred embodiments only, and it should be understood by those skilled in the art that the changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present application and the scope of the claims of the present application.
Claims (3)
1. A wind speed regulation method, characterized in that the following wind speed regulation device is adopted, the wind speed regulation device comprises: the device comprises a control device, a stepping motor and a controllable air outlet, wherein the control device is electrically connected with the stepping motor, the controllable air outlet is communicated with a fan air conveying pipe, the controllable air outlet comprises a movable side plate, a connecting rod is arranged in the controllable air outlet, one end of the connecting rod is fixedly connected with the inner wall of the movable side plate, the other end of the connecting rod is fixedly connected with one end of a transmission rack, and the transmission rack is movably connected with an output shaft of the stepping motor through the transmission device; the transmission device comprises a first transmission gear and a second transmission gear, the first transmission gear is fixedly connected with an output shaft of the stepping motor, and the second transmission gear is respectively connected with the first transmission gear and the transmission rack in a meshed manner;
the movable side plates comprise a first movable side plate and a second movable side plate which are symmetrically arranged, the connecting rods comprise Y-shaped connecting rods, a first connecting rod and a second connecting rod, one end of each first connecting rod is fixedly connected with the inner wall of each first movable side plate, and the other end of each first connecting rod is movably connected with the first end of each Y-shaped connecting rod; one end of the second connecting rod is fixedly connected with the inner wall of the second movable side plate, and the other end of the second connecting rod is movably connected with the second end of the Y-shaped connecting rod; the third end of the Y-shaped connecting rod is fixedly connected with one end of the transmission rack;
the controllable air outlet comprises an air outlet connecting piece, a hinge is arranged between the first movable side plate and the second movable side plate and the air outlet connecting piece, and the first movable side plate and the second movable side plate are movably connected with the air outlet connecting piece through the hinge;
the air outlet connecting piece is also provided with a rubber cover, and two ends of the rubber cover are fixedly connected with the first movable side plate and the second movable side plate respectively;
the method comprises the following steps:
a laser sensor in the control device acquires the current plant canopy leaf area index and transmits the current plant canopy leaf area index to a computing unit of the MCU for processing;
the calculation unit sends the processing result to the control unit of the MCU after processing according to the current plant canopy leaf area index, the control unit controls the action of the stepping motor according to the processing result to drive the movable side plate to move, changes the air outlet area of the controllable air outlet, adjusts the air speed of the controllable air outlet, and comprises: if the current plant canopy leaf area index B 1 When the air quantity of the controllable air outlet is larger than the preset leaf area index, the air speed is increased, the width of the controllable air outlet is set to be larger than or equal to 0.05m, and the air speed of the controllable air outlet is setOr alternatively, the process may be performed,
if the current plant canopy leaf area index B 1 When the air quantity of the controllable air outlet is smaller than the preset leaf area index, the air speed is reduced, the air speed of the controllable air outlet is set to be larger than or equal to 12m/s, and the air speed of the controllable air outlet is set to be larger than or equal to 12m/sWherein:B 0 for reference leaf area index of plant canopy, +.>k s S is the air outlet coefficient 0 The area of the controllable air outlet is S is the area of the current controllable air outlet when the first movable side plate and the second movable side plate are parallel to the transmission rack, A 0 For reference of the number of laser returns of plant canopy A 1 The number of lasers returned by the current plant canopy;
in particular, the method comprises the steps of,
according to the measured canopy volume and leaf area index, the wind speed of the air outlet is regulated, wherein the number of teeth of the first transmission gear is n 1 The number of teeth of the second transmission gear is n 2 Diameter of reference circle d 0 And the stepping angle of the stepping motor is n 0 When the MCU generates y pulses, the travelling distance d of the rack is
When the first movable side plate and the second movable side plate on two sides are parallel to the transmission rack, the length of the two connecting rods is L, the vertical distance from the connecting point of the connecting rods and the movable side plates to the hinge is k, the width of the air outlet is m, the length is R, and the length of the rubber cover is L p When the connecting rod moves inwards and outwards, the included angle alpha between the connecting rod and the connecting rod before movement is as follows:
wherein: a=km and,
wherein flc is a rack motion function, odd 1 when the rack moves inward, and even 0 when the rack moves outward.
2. The wind speed regulation and control method according to claim 1, wherein the first transmission gear and the second transmission gear are arranged in a transmission cover, the transmission cover is fixedly connected with the air outlet connecting piece, the first transmission gear and the second transmission gear are movably connected with the transmission cover through a transmission column, and a friction bearing is arranged between the transmission column and the transmission cover.
3. The wind speed regulation method according to claim 1, wherein the control device comprises an MCU and a laser sensor, the MCU comprises a calculation unit and a control unit, the calculation unit is electrically connected with the laser sensor, and the control unit is electrically connected with the calculation unit and the stepping motor, respectively.
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