Electric speed sprayer

Abstract

The present invention relates to an electric speed sprayer that is supplied with power by an electric motor. The electric speed sprayer according to the present invention comprises: a driving motor that transmits power to wheels for moving the electric speed sprayer; a blower motor that transmits power to a blower fan for spraying a liquid; a power battery that supplies power to the driving motor and the blower motor; a driving clutch for controlling the power transmission between the driving motor and the wheels; a blower clutch for controlling the power transmission between the blower motor and the blower fan; a driving pedal for controlling the speed of the driving motor; a clutch pedal for controlling the connection of the driving clutch; and a control unit that includes one or more processors and memory and controls electronic equipment of the electric speed sprayer. Accordingly, the electric speed sprayer has the effect of reducing engine noise and vibration and preventing environmental pollution caused by the emission of exhaust gas.

Description

Electric speed sprayer

[0001] The present invention relates to a speed sprayer, and more particularly to an electric speed sprayer powered by an electric motor.

[0002] Spraying pesticides is essential for crop cultivation to prevent pests and diseases. Speed ​​sprayers are used to apply pesticides over large areas such as orchards, farms, and golf courses.

[0003] The speed sprayer is composed of an engine, a water tank, a chemical tank, a sprayer, a blower fan, a nozzle, etc., and the chemical particles sprayed through the nozzle are sprayed more finely by the blower fan, and the sprayer is configured so that an operator rides on the vehicle and operates the vehicle to spray the chemical.

[0004] Recently, the need for these speed sprayers is increasing due to the decline in the agricultural population and aging population. However, since existing speed sprayers use automobile engines as a power source, automobile companies are discontinuing engine development due to the development of electric vehicles. Therefore, if the supply of engines is discontinued, the development and production of speed sprayers can no longer proceed.

[0005] In addition, for environmental protection such as carbon neutrality, the development of a speed sprayer that is powered by a motor rather than an engine is essential.

[0006] The inventors of the present invention have made efforts to solve the problems of the prior art and have completed the present invention after much effort to provide an electric speed sprayer capable of driving and spraying chemicals by a motor and a control method thereof.

[0007]

[0008] [National Research and Development Project Supporting This Invention]

[0009] [Project ID]1545026891

[0010] [Assignment Number]322043032SB010

[0011] [Ministry Name] Ministry of Agriculture, Food and Rural Affairs

[0012] [Name of project management (specialized) organization] National Institute of Agricultural and Food Technology Planning and Evaluation

[0013] [Research Project Name] Development of Agricultural Machinery Technology Using Eco-Friendly Power Sources

[0014] [Research Project Name] Development and Commercialization of an Electric-Powered Speed ​​Sprayer (SS Machine)

[0015] [Contribution rate] 1 / 1

[0016] [Name of the project performing organization] HanA Co., Ltd.

[0017] Research Period: April 1, 2022 - December 31, 2024

[0018]

[0019] In order to solve the above-mentioned problems, the present invention aims to provide an electric speed sprayer that uses an electric motor as a power source.

[0020] In addition, it is another object of the present invention to provide a method for effectively controlling a variable speed sprayer by using a motor instead of an engine.

[0021] In addition, another object of the present invention is to provide an electric speed sprayer that enables autonomous driving and spraying of chemicals by a control unit including artificial intelligence.

[0022] However, the problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0023] An electric speed sprayer according to a preferred embodiment of the present invention for solving the above-mentioned problem is as follows:

[0024] The electric speed sprayer is characterized by comprising: a driving motor that transmits power to wheels for movement of the electric speed sprayer; a blower motor that transmits power to a blower fan for spraying a chemical solution; a power battery that supplies power to the driving motor and the blower motor; a driving clutch that controls power transmission between the driving motor and the wheels; a blower clutch that controls power transmission between the blower motor and the blower fan; a driving pedal for controlling the speed of the driving motor; a clutch pedal for controlling connection of the driving clutch; and a control unit that includes one or more processors and memories and controls electronic equipment of the electric speed sprayer.

[0025] The above control unit is characterized in that it switches to an on state in which the power of the power battery starts to be transmitted to the driving motor only when the clutch pedal is pressed.

[0026] It is characterized by further including a slide switch for controlling the rotation speed of the driving motor at a constant level.

[0027] The above control unit is characterized in that, when inputs of the driving pedal and the slide switch are made simultaneously, it controls the rotation speed of the driving motor by giving priority to the input of the driving pedal.

[0028] The above control unit is characterized in that it can independently control the steering of each wheel of the speed sprayer.

[0029] It is characterized by further including a transmission for controlling the rotation ratio between the driving motor and the wheels.

[0030] The above control unit is characterized in that it maintains the driving motor in an idle rotation state when the engine is turned on by the run switch.

[0031] An electric speed sprayer according to another preferred embodiment of the present invention,

[0032] An electric speed sprayer comprising: a driving motor for transmitting power to wheels for movement of the electric speed sprayer; a chemical spray nozzle for spraying chemical; a blower motor for transmitting power to a blower fan for spraying chemical; a power battery for supplying power to the driving motor and the blower motor; a driving clutch for controlling power transmission between the driving motor and the wheels; a blower clutch for controlling power transmission between the blower motor and the blower fan; a driving pedal for controlling the speed of the driving motor; a clutch pedal for controlling connection of the driving clutch; a sensor unit including a lidar sensor and a GPS sensor; a steering unit for steering the wheels; and a control unit including one or more processors and memories and controlling electronic equipment of the electric speed sprayer.

[0033] The control unit is characterized in that it controls the driving motor and steering unit based on sensor values ​​measured by the lidar sensor and GPS sensor to control the electric speed sprayer to drive autonomously.

[0034] The sensor unit further includes a camera sensor, and the control unit is characterized in that it controls the spraying of the chemical liquid by the chemical liquid spray nozzle according to the crop status acquired by the camera sensor.

[0035] The above control unit is characterized by including an artificial intelligence unit that learns in advance based on information on the cultivation conditions and environment of fruit trees or crops in the liquid spraying area.

[0036] The above-mentioned liquid spray nozzle is capable of spraying liquid in four areas: upper and lower left, upper and lower right in the direction of travel of the electric speed sprayer, and the control unit is characterized in that it controls the liquid spray nozzle to spray liquid only in areas where crops are distributed based on the crop status acquired by the camera sensor.

[0037] The steering unit includes a BLDC motor, and the control unit is characterized in that it controls the BLDC motor to control the steering angle of the steering unit in real time.

[0038] According to the present invention, by replacing the power source of the speed sprayer with an electric motor, it is possible to provide a quieter ride and prevent environmental pollution caused by exhaust gas.

[0039] Additionally, it has the advantage of enabling optimal spraying of chemicals unmanned by controlling the electric speed sprayer to operate autonomously and using artificial intelligence to spray chemicals.

[0040] The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention belongs from the description below.

[0041] FIG. 1 is a schematic structural diagram of an electric speed sprayer according to a preferred embodiment of the present invention.

[0042] FIG. 2 is a schematic block diagram of an electric speed sprayer according to a preferred embodiment of the present invention.

[0043] FIG. 3 is a schematic block diagram of a control unit of an electric speed sprayer according to a preferred embodiment of the present invention.

[0044] FIG. 4 is an example of an instrument panel for controlling an electric speed sprayer according to a preferred embodiment of the present invention.

[0045] FIG. 5 is a schematic block diagram of a control unit of an electric speed sprayer according to another preferred embodiment of the present invention.

[0046] The above-described objects, means, and resulting effects of the present invention will become more apparent through the following detailed description, taken in conjunction with the accompanying drawings. Accordingly, those skilled in the art will be able to readily implement the technical concepts of the present invention. Furthermore, in describing the present invention, if a detailed description of known technology related to the present invention is deemed to unnecessarily obscure the gist of the invention, such detailed description will be omitted.

[0047] The terminology used herein is for the purpose of describing embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise. In this specification, terms such as "include," "provide," "provide," or "have" do not exclude the presence or addition of one or more other components other than the mentioned components.

[0048] In this specification, terms such as “or,” “at least one,” and the like can refer to one of the words listed together, or a combination of two or more. For example, “or B” or “and at least one of B” can include only one of A or B, or can include both A and B.

[0049] In this specification, descriptions using the word “for example” or the like should not be construed as limiting the embodiments of the invention in terms of the effects of variations such as tolerances, measurement errors, limitations of measurement accuracy, and other commonly known factors, as well as the information presented, such as cited characteristics, variables, or values, may not be exactly the same.

[0050] In this specification, when a component is described as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. Conversely, when a component is described as being "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0051] In this specification, when a component is described as being "on" or "in contact with" another component, it should be understood that it may be directly on or connected to the other component, but there may be another component in between. Conversely, when a component is described as being "directly on" or "in direct contact with" another component, it should be understood that there is no other component in between. Other expressions that describe the relationship between components, such as "between" and "directly between", can be interpreted similarly.

[0052] In this specification, terms such as "first" and "second" may be used to describe various components, but the components should not be limited by these terms. Furthermore, these terms should not be construed to limit the order of each component, but rather may be used to distinguish one component from another. For example, a "first component" may be referred to as a "second component," and similarly, a "second component" may also be referred to as a "first component."

[0053] Unless otherwise defined, all terms used herein may be used in their common sense by those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0054]

[0055] Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings.

[0056] FIG. 1 is a schematic structural diagram of an electric speed sprayer according to a preferred embodiment of the present invention.

[0057] The electric speed sprayer (1) may include a driving motor (10) for driving and a blower motor (20) for rotating a blower fan (24) for spraying the liquid.

[0058] The driving motor (10) can move the speed sprayer (1) at a desired speed by transmitting power to the wheels.

[0059] The blower motor (20) transmits power to the blower fan (24) to rotate it, thereby spreading the liquid sprayed through the nozzle by the sprayer (42) over a wider range.

[0060] For this purpose, the power battery (30) supplies power to the driving motor (10) and the blower motor (20).

[0061] The user controls the driving speed of the electric speed sprayer (1) by stepping on the accelerator pedal (50) installed on the driver's seat of the electric speed sprayer (1).

[0062] The VCU (Vehicle Control Unit) or control unit (70) controls electronic equipment related to driving or spraying of the electric speed sprayer (1).

[0063] For this purpose, the battery (74) supplies power to the control unit (70) and other electronic equipment of the electric speed sprayer (1).

[0064] The chemical liquid tank (40) stores the chemical liquid for spraying.

[0065]

[0066] FIG. 2 is a schematic block diagram of an electric speed sprayer according to a preferred embodiment of the present invention.

[0067] An electric speed sprayer (1) according to the present invention includes a driving motor (10) for driving and a blower motor (20) for spraying a chemical liquid.

[0068] The body of the electric speed sprayer (1) includes a driver's seat and a steering section (not shown) similar to a conventional speed sprayer that uses an engine as power.

[0069] A high-voltage power battery (30) may be included to supply power to the driving motor (10) and the blower motor (20).

[0070] The power battery (30) may be a rechargeable lithium-ion battery, and the voltage may be, but is not limited to, 72 V DC.

[0071] Since the power battery (30) outputs direct current (voltage), an inverter (not shown) is required to convert direct current into alternating current to supply it to the driving motor (10) and the blower motor (20).

[0072] The rotation speed of the driving motor (10) is reduced by the reducer (12), and the driving clutch (14) is connected or disconnected from the transmission (16), thereby selectively transmitting power to the wheels (18).

[0073] The driving clutch (14) is connected to the clutch pedal (52) and connects or disconnects the driving motor (10) and the transmission (16) according to the user's operation of the clutch pedal (52).

[0074] The electric speed sprayer (1) according to the present invention includes a multi-stage transmission (16) for driving, unlike a typical electric vehicle.

[0075] Since the motor of a typical electric vehicle is directly connected to the wheel through a reducer, shock may still be transmitted to the vehicle body during acceleration or deceleration. However, the electric speed sprayer (1) according to the present invention has the advantage of being able to alleviate shock due to acceleration or deceleration by including a transmission (16).

[0076] The transmission (16) includes a transmission capable of 5 or 6 gears for high (H) and low (L) speeds, respectively, and can be shifted by a gear lever (not shown). In addition, a gear lever (not shown) that can select between 4-wheel drive and 2-wheel drive may be further included.

[0077] For spraying the liquid, a blower motor (20) supplies power to a blower fan (24), and a blower clutch (22) is used to control the operation / stop of the blower fan (24).

[0078] The chemical liquid tank (40) stores pesticides and other chemical liquids, and the sprayer (42) sprays the chemical liquid in the chemical liquid tank (40) through a number of nozzles (not shown), and the blower fan (24) rotates by the blower motor (20) so that the sprayed chemical liquid can be spread over a wider area. The power for the operation of the sprayer (42) can be transmitted from the blower motor (20).

[0079] The speed or on / off of the blower motor (20) can be controlled by a control unit (70) to be described later, and for this purpose, the electric speed sprayer (1) may further include a blower switch (not shown).

[0080] The control unit (VCU) (70) is used to control various electronic devices of the electric speed sprayer (1).

[0081] For this purpose, the control unit (70) may include one or more processors and memories.

[0082] The memory stores various information necessary for the operation of the electric speed sprayer (1). For example, the information stored in the memory may include, but is not limited to, program information for controlling the operation of the electric speed sprayer (1), or program information for controlling the spraying and blowing of the chemical liquid.

[0083] For example, the memory may include, but is not limited to, a hard disk type, a magnetic media type, a compact disc read only memory (CD-ROM), an optical media type, a magneto-optical media type, a multimedia card micro type, a flash memory type, a read only memory type, or a random access memory type, depending on its type. In addition, the memory may include, but is not limited to, a cache, a buffer, a main memory, an auxiliary memory, or a separately provided storage system depending on its use / location.

[0084] The control unit (70) can perform various control operations of the electric speed sprayer (1).

[0085] For example, the control unit (70) may include, but is not limited to, a hardware processor or a software process executed on the processor. For example, the control unit (70) may include, but is not limited to, a microprocessor, a central processing unit (CPU), a processor core, a multiprocessor, an application-specific integrated circuit (ASIC), or a field programmable gate array (FPGA).

[0086] Figure 3 shows a more detailed control structure of the control unit (70) according to the present invention.

[0087] The control unit (70) can perform control over the operation related to driving and spraying of the electric speed sprayer (1) or other functions of the electric speed sprayer (1).

[0088] For this purpose, the control unit (70) operates by receiving power from the electric battery (74).

[0089] Since the electric vehicle battery (74) operates at a low voltage (12 V) unlike the power battery (30), it further includes an inverter (72) to convert the high voltage of the power battery (30) into a low voltage.

[0090] The control unit (70) can control the on / off of the electric speed sprayer (1) by the on / off switch (56).

[0091] Unlike a speed sprayer that uses an engine, an electric speed sprayer (1) that uses a motor does not require the motor to be started, but a pump (not shown) must be operated to generate hydraulic pressure for operating a transmission (16) or a steering unit. Therefore, when the start-on state is input by the start-on / off switch (56) for the operation of this pump, the control unit (70) rotates the drive motor (10) at a constant RPM to maintain a state similar to the start-on state of a fossil fuel engine. To this end, a drive motor speed sensor (18) capable of detecting the rotational state of the drive motor (10) may be further included.

[0092] When the ignition is turned on by the ignition on / off switch (56), the driving motor (10) rotates at a constant RPM. Therefore, in order to prevent the electric speed sprayer (1) from moving, the control unit (70) can control the ignition to be switched to the on state only when the clutch pedal (52) is pressed. In addition, a display unit (not shown) for indicating the on state may be further included.

[0093] The control unit (70) can receive input from the driving pedal (50) to control the driving speed of the electric speed sprayer (1) and adjust the speed of the driving motor (10).

[0094] The electric speed sprayer (1) according to the present invention may further include a slide switch (54) for controlling the speed of the driving motor (10) in addition to the driving pedal (50).

[0095] The electric speed sprayer (1) operates at a relatively slow speed to evenly spray the chemical solution. For example, effective chemical spraying can be achieved at a speed of approximately 1.5 km / h. However, maintaining this low speed at a constant level is difficult to control using the driving pedal (50). Therefore, the slide switch (54) of the present invention is necessary to maintain a constant rotational speed of the driving motor (10).

[0096] Unlike the driving pedal (50), the slide switch (54) can be fixed at a fixed position. Therefore, the speed of the driving motor (10) can be fixed to a required speed.

[0097] The control unit (70) must control the rotation speed of the driving motor (10) to maintain the speed input by the slide switch (54). Since the driving motor (10) transmits power to the wheels by the gear ratio of the transmission (16), in order to maintain the speed input by the slide switch (54), the speed of the final electric speed sprayer (1) can be calculated by the gear ratio of the transmission (16) and the rotation speed of the driving motor (10), and then the rotation speed of the driving motor (10) can be controlled.

[0098] The control unit (70) needs to control inputs from the driving pedal (50) and the slide switch (54) in order of priority when they are input simultaneously.

[0099] For example, when a faster speed is required while the vehicle is being controlled to run at a constant speed by the slide switch (54), a faster speed input can be made by the driving pedal (50). In this case, the control unit (70) can give priority to the driving pedal (50) and control the electric speed sprayer (1) at the speed input by the driving pedal (50) regardless of the speed specified by the slide switch (54).

[0100] Alternatively, by giving priority to the input by the slide switch (54), the speed of the driving motor (10) can be maintained at the speed input by the slide switch (54) even if the driving pedal (50) is input if the slide switch (54) is not in the off position.

[0101] Alternatively, a third selection switch (not shown) may be provided to allow selection of which input from the driving pedal (50) or the slide switch (54) will control the speed of the driving motor (10) and thereby the speed of the electric speed sprayer (1).

[0102] In this case, the input of the unselected driving pedal (50) or slide switch (54) can be blocked, and there is an effect of preventing in advance any malfunction that may occur due to two signals being input to the control unit (70) at the same time.

[0103] The control unit (70) may independently steer each of the four wheels of the electric speed sprayer (1).

[0104] For this purpose, a motor (not shown) for steering may be additionally included on each of the four wheels of the electric speed sprayer (1).

[0105] In the case of an electric speed sprayer (1), it may be necessary to pass through narrow spaces between trees, such as in a farm or orchard, and there may be instances where various steering operations, such as turning, diagonal driving, or lateral driving, are required.

[0106] To this end, the control unit (70) independently controls each wheel of the electric speed sprayer (1) to enable turning in place, diagonal driving, and lateral (right angle) driving.

[0107]

[0108] Figure 4 shows an example of an instrument panel for controlling an electric speed sprayer according to the present invention.

[0109] For the operation of the control unit (70) described above, the user controls the driving or spraying of the electric speed sprayer (1) by operating the switches on the instrument panel, if necessary.

[0110] Figure 4 (a) is an example of an instrument panel (80) related to the driving of an electric speed sprayer (1).

[0111] The ignition key switch (81) is used to control the starting as described above. When the ignition switch (81) is moved to the ON state and then turned back to the START state, the control unit (70) controls the electric speed sprayer (1) to the ON state as described above.

[0112] In the ignition-on state, the electric speed sprayer (1) must operate the pump to generate hydraulic pressure for operating the transmission (16) or steering unit, and for this purpose, in the ignition-on state, the control unit (70) rotates the driving motor (10) at a constant RPM to control the driving motor (10) to a state similar to the idle state of the engine.

[0113] As described above, the control unit (70) switches the electric speed sprayer (1) to the start-on state by the ignition key switch (81) only when the clutch pedal (52) is pressed.

[0114] The four-wheel steering switch (82) is used to control the steering mode.

[0115] When the 4-wheel steering switch (82) is set to 2-wheel steering mode, only the front wheels can be steered, like a conventional 4-wheel vehicle.

[0116] When the four-wheel steering switch (82) is set to four-wheel steering mode, both the front and rear wheels can be steered. Accordingly, the control unit (70) can control various driving modes of the electric speed sprayer (1), such as diagonal driving, lateral driving, and stationary rotation, by steering all four wheels.

[0117] In addition, a switch related to the headlight and horn of the other electric speed sprayer (1) and a display that can display the status of the electric speed sprayer (1) related to driving may be further included.

[0118] Fig. 4 (b) shows an example of a blower-related instrument panel (90) related to liquid spraying.

[0119] The blower-related instrument panel (90) may include a sprayer on / off switch (91), a blower fan connection switch (92), a blower fan speed switch (93), and a liquid spray nozzle open / close switch (94).

[0120] The control unit (70) can control the spraying of the sprayer (42) by the sprayer on / off switch (91). When the sprayer on / off switch (91) is on, the control unit (70) can control the start / end of spraying the chemical liquid and the amount of the chemical liquid sprayed.

[0121] The blower fan connection switch (92) controls the connection between the blower motor (20) connected to the blower fan clutch (22) and the blower fan (24). If necessary, the control unit (70) may also control the connection between the blower fan (24) and the blower motor (20) regardless of the connection / disconnection of the blower fan connection switch (92).

[0122] The blower fan speed switch (93) is used to control the rotation speed of the blower fan.

[0123] The speed of the blower fan may be adjusted by the control unit (70) according to the surrounding environment, regardless of the blower fan speed switch (93).

[0124] The nozzle open / close switch (94) for spraying the liquid controls the opening / closing of each nozzle located at the lower right, upper right, upper left, and lower left by grouping them.

[0125] Likewise, the instrument panel (90) related to the blower unit includes a display for indicating the status related to the blower unit, and may include an ignition key part for turning the blower motor (20) on / off.

[0126]

[0127] Figure 5 shows a more detailed control structure of a control unit according to another embodiment of the present invention.

[0128] The control unit (70) of the electric speed sprayer (1) according to the present invention can control the driving of the electric speed sprayer (1) or control the sprayer (42) to control the spraying of the chemical liquid using data acquired through the sensor unit (80).

[0129] For this purpose, the sensor unit (80) may include, but is not limited to, a lidar sensor, a radar sensor, or an RTK-GPS sensor.

[0130] The control unit (70) can determine the current location and the spraying path of the liquid based on the sensor values ​​measured by the sensor unit (80), and can use these to control the operation of the electric speed sprayer (1).

[0131] The control unit (70) sets a path based on the current location identified by the GPS sensor, controls the driving motor (10) to control the speed of the electric speed sprayer (1), and controls the steering unit (90) to control the direction of the electric speed sprayer (1), thereby enabling autonomous driving of the electric speed sprayer (1).

[0132] For this purpose, the steering unit (90) may further include a BLDC motor.

[0133] The control unit (70) can control the steering angle of the wheels of the electric speed sprayer (1) in real time by controlling the BLDC motor with an operating range of 9 to 28 V.

[0134] The control unit (70) can control the liquid spray nozzle of the sprayer (42) while driving autonomously. This is to control the electric speed sprayer (1) to automatically spray the liquid while driving autonomously.

[0135] For this purpose, the liquid spray nozzle of the sprayer (42) can be positioned at the upper and lower left side of the direction of travel of the electric speed sprayer (1), and at the upper and lower right side of the direction of travel.

[0136] Depending on the type and status of the fruit or crop in the direction of travel of the electric speed sprayer (1), the position of the chemical spraying nozzle is selected and the spraying on / off of each nozzle is controlled depending on whether the chemical is sprayed on a fruit or crop in a low position or on a fruit or crop in a high position.

[0137] Alternatively, an actuator (not shown) may be further included to enable the liquid spray nozzle of the sprayer (42) to move up and down or left and right or to rotate.

[0138] The control unit (70) can control the direction of drug spraying by controlling the actuator to achieve optimal drug spraying by identifying the situation of the drug spraying area, such as the location and height of the crop.

[0139] For this purpose, the sensor unit (80) may further include a camera sensor to determine the status of the fruit tree or crop.

[0140] In order to spray the optimal chemical solution, the control unit (70) may further include an artificial intelligence unit that learns in advance based on the situation information of the fruit tree or crop identified by the camera sensor and environmental information such as weather or path.

[0141] The control unit (70) can set a spraying path for the chemical solution using a pre-learned artificial intelligence unit, or control the amount, direction, or time of the chemical solution being sprayed.

[0142] For example, the spraying schedule can be postponed using weather information, or the spraying direction can be determined and the direction of the spray nozzle can be determined using wind direction information.

[0143] Additionally, it is controlled so that pesticides are sprayed only on the parts of the path where there are crops, based on the status of the fruit or crops identified using a camera sensor.

[0144]

[0145] The electric speed sprayer according to the present invention, which is configured as described above, uses an electric motor instead of a fossil fuel engine, thereby reducing engine noise and vibration and preventing environmental pollution caused by exhaust gas emissions. In addition, it enables autonomous driving and learns to optimize chemical spraying by artificial intelligence, thereby enabling unmanned operation of chemical spraying.

[0146]

[0147] While the detailed description of the present invention has described specific embodiments, it should be understood that various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the described embodiments, but should be determined by the claims and their equivalents.

Claims

1. A driving motor that transmits power to the wheels to move the electric speed sprayer; A blower motor that powers a blower fan for spraying the liquid; A power battery that supplies power to the above driving motor and blower motor; A driving clutch that controls power transmission between the driving motor and the wheels; A blower clutch that controls power transmission between the blower motor and the blower fan; A driving pedal for controlling the speed of the above driving motor; Clutch pedal for controlling the connection of the above driving clutch; A control unit comprising one or more processors and memory and controlling the electronic equipment of said electric speed sprayer; An electric speed sprayer, characterized by including:

2. In paragraph 1, An electric speed sprayer, characterized in that the control unit switches to an on state in which power from the power battery is transmitted to the driving motor only when the clutch pedal is pressed.

3. In paragraph 1, A slide switch for constantly controlling the rotation speed of the above driving motor; An electric speed sprayer characterized by further including:

4. In paragraph 3, An electric speed sprayer, characterized in that the control unit controls the rotation speed of the driving motor by giving priority to the input of the driving pedal when the input of the driving pedal and the slide switch are performed simultaneously.

5. In paragraph 1, An electric speed sprayer, characterized in that the control unit can independently steer each wheel of the speed sprayer.

6. In paragraph 1, A transmission for controlling the rotation ratio between the driving motor and the wheels; An electric speed sprayer characterized by further including:

7. In paragraph 1, An electric speed sprayer, characterized in that the control unit maintains the driving motor in an idle rotation state when the start state is turned on by the run switch.

8. In paragraph 1, Liquid spray nozzle for spraying liquid; A sensor unit including a lidar sensor and a GPS sensor; and A steering unit for steering the above wheels; Including more, An electric speed sprayer, characterized in that the control unit controls the driving motor and steering unit based on sensor values ​​measured by the lidar sensor and the GPS sensor to enable the electric speed sprayer to drive autonomously.

9. In paragraph 8, The above sensor part further includes a camera sensor, An electric speed sprayer, characterized in that the control unit controls the spraying of the liquid from the liquid spray nozzle according to the crop status acquired by the camera sensor.

10. In paragraph 9, An electric speed sprayer, characterized in that the control unit includes an artificial intelligence unit that learns in advance based on information about the fruit or crop cultivation situation and environment in the liquid spraying area.

11. In paragraph 9, The above liquid spray nozzle can spray liquid in four areas: upper, lower, upper, and lower left, in the direction of travel of the electric speed sprayer. An electric speed sprayer, characterized in that the control unit controls the liquid spraying nozzle to spray the liquid only in the area where the crop is distributed according to the crop status acquired by the camera sensor.

12. In paragraph 8, The above steering unit includes a BLDC motor, An electric speed sprayer, characterized in that the control unit controls the BLDC motor to control the steering angle of the steering unit in real time.

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