Liquid spraying system for environmental hazard reduction and work environment improvement

Abstract

A liquid spraying system according to various embodiments of the present invention for realizing the aforementioned objectives is disclosed. The liquid spraying system may be characterized by comprising an environmental sensing sensor unit that detects at least one environmental data among weather conditions at a work site, air pollution levels, and dust dispersion amounts; a spraying unit that can be mounted on a moving means and selectively sprays different liquids; and a control unit that controls the spraying unit based on environmental data obtained from the environmental sensing sensor unit.

Description

Technology Field

[0001] The present invention relates to a liquid spraying system, and more specifically, to a liquid spraying system for reducing environmental hazards and improving the working environment that effectively reduces environmental hazards such as fine dust, odors, and dust by detecting environmental data of a work site in real time and selectively spraying different liquids. Background Technology

[0003] With the recent advancement of industrial development and urbanization, the need to manage environmental hazards generated at construction sites, coal storage yards, industrial facilities, waste disposal sites, and road construction sites has significantly increased. In these working environments, various environmental hazards such as fine dust, particulate matter, odors, and high temperatures are continuously generated, threatening the health and safety of workers and having a serious adverse impact on the living environment of residents in nearby areas.

[0004] In particular, dust generated from coal storage yards or construction sites is widely dispersed by the wind, causing air pollution, while high temperatures during the summer increase the risk of heatstroke for workers and significantly reduce work efficiency. Furthermore, foul odors emanating from waste treatment plants are a major cause of complaints from residents in nearby areas.

[0005] To address these problems, sprinkler systems that suppress dust and reduce temperature by spraying water are widely used. Conventional sprinkler systems are primarily installed as fixed sprinklers and are structured to spray water onto specific areas.

[0006] However, conventional sprinkler systems have the following technical limitations and problems.

[0007] First, due to the limitations of the fixed structure, the spraying locations are restricted and relocation to other sites is difficult; furthermore, it is difficult to proactively respond to the movement of dust sources or changes in diffusion patterns in an environment where the work area is constantly changing.

[0008] Second, since it operates using a single-liquid-based manual control method that primarily uses water, there are limitations in customized responses to various environmental data and the characteristics of pollutants. Furthermore, the absence of automatic control functions to respond to real-time changes in environmental data leads to problems such as reduced effectiveness due to excessive water usage or insufficient spraying.

[0009] Third, stable year-round operation is difficult due to equipment damage caused by the freezing of residual water in the sprinkler system during the winter, and the lack of real-time monitoring and remote control functions makes it impossible to check the system status or manage work history.

[0010] To overcome these technical limitations, some research is developing mobile sprinkler systems or systems equipped with automatic control functions; however, fundamental issues such as the use of a single liquid, insufficient response to environmental data, operational problems during winter, and the lack of intelligent control remain unresolved.

[0011] Therefore, there is an urgent need to develop an intelligent liquid injection system that ensures mobility to respond quickly to various working environments, allows for the selective use of different liquids based on environmental data, enables automatic control based on real-time environmental data, and operates stably regardless of the season. Prior art literature

[0013] Registered Patent Publication No. 10-1673270, Nov. 1, 2016. The problem to be solved

[0014] The problem that the present invention aims to solve is to provide a liquid spraying system for reducing environmental hazards and improving the working environment.

[0015] The problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0017] A liquid spraying system according to an embodiment of the present invention for solving the aforementioned problem is disclosed. The liquid spraying system may include an environmental sensing sensor unit that detects at least one environmental data among weather conditions at a work site, air pollution levels, and dust dispersion amounts; a spraying unit that can be mounted on a moving means and selectively sprays different liquids; and a control unit that controls the spraying unit based on environmental data obtained from the environmental sensing sensor unit.

[0018] In an alternative embodiment, the spraying unit may include a modular frame capable of being coupled to and separated from the moving means, a tank unit composed of a first tank and a second tank for storing different liquids, a spray head equipped with a plurality of nozzles capable of height adjustment, horizontal rotation, and vertical angle adjustment, and a drain unit for discharging residual liquid in the piping and nozzles according to preset conditions.

[0019] In an alternative embodiment, the modular frame may include a plurality of outriggers that are rotatably installed on the side of the modular frame, rotated to be perpendicular to the modular frame in a horizontal state, and then unfolded in a vertical direction.

[0020] In an alternative embodiment, the injection head includes a lift unit for height adjustment, the lift unit includes a first arm fixedly installed on a frame, a second arm rotatably coupled to the first arm about a horizontal axis, and an injection head support arm rotatably coupled to the tip of the second arm, and the second arm is driven by a hydraulic cylinder so that the injection head support arm can be raised or lowered by changing the first angle between the first arm and the second angle between the injection head support arm and the first arm.

[0021] In an alternative embodiment, the injection head comprises a head housing having a hollow structure in which a plurality of nozzles are installed along the inner circumference of one end of the injection head, and a blower unit installed inside the head housing and blowing air in the direction of the plurality of nozzles, wherein the blower unit may include a guide member for rectifying the airflow inside the head housing.

[0022] In an alternative embodiment, the preset condition is at least one of detection of an ambient temperature threshold or lower, exceeding a preset non-use time, and a liquid replacement time, and the drain portion may open a drain valve according to the preset condition and supply compressed air into the piping and nozzle to forcibly discharge the residual liquid.

[0023] In an alternative embodiment, the control unit may include a liquid selection module that determines the type of liquid to be sprayed from the first tank or the second tank by combining and analyzing the fine dust concentration, temperature, and humidity among the environmental data; a spray control module that adjusts the number of operating nozzles in steps and variably controls the spray amount according to the fine dust concentration and wind speed among the environmental data; a direction control module that adjusts the rotation direction and spray angle of the spray head based on wind direction information among the environmental data; and a communication module that stores the environmental data and spray history and transmits and receives remote monitoring signals.

[0024] In an alternative embodiment, the liquid selection module calculates a first environmental index using a multivariable function with fine dust concentration, temperature, humidity, and wind speed as input variables, and selects water from the first tank when the first environmental index is within a first range, the temperature is above a first temperature, and the humidity is below a first humidity, and corrects the spray amount by a first multiplier when the wind speed is above a first wind speed, and selects a surface hardener from the second tank when the wind speed is below a second wind speed in a dry state where the first environmental index is within a second range, the dust dispersion amount is above a first dispersion amount, and the humidity is below a second humidity, and generates a correction signal to increase the surface hardener concentration by a first ratio when the temperature is above a second temperature, and transmits the calculation result of the multivariable function and the correction signal to the spray control module.

[0025] In an alternative embodiment, the injection control module calculates a second environmental index by summing the fine dust concentration, wind speed, temperature, and dust dispersion amount, and controls the injection by selecting a first mode in which a first number of nozzles are controlled to inject at a first injection pressure when the second environmental index is below a first threshold, the wind speed is below a third wind speed, and the temperature is below a third temperature; a second mode in which a second number of nozzles are controlled to inject when the second environmental index is above the first threshold and below a second threshold, or the wind speed is above the third wind speed and below a fourth wind speed, wherein the injection pressure is variably adjusted from the first injection pressure to the second injection pressure in proportion to the increase in wind speed; and a third mode in which a third number of nozzles are controlled to inject when the second environmental index is above the second threshold or the wind speed is above the fourth wind speed, wherein the injection pressure is fixed at the third pressure and the injection time is extended by a second multiplier compared to the first mode, and transmits information regarding the calculated second environmental index and the selected mode to the direction control module.

[0026] In an alternative embodiment, the control unit further includes a GPS module for acquiring current location information and a time management module for managing work time, and the control unit automatically initiates spraying when it is determined that the current location acquired by the GPS module has entered a specific pre-registered work area, automatically terminates spraying when it is determined that the pre-set work schedule of the time management module is completed or that the current location has left the specific work area, and can record and store work path from the GPS module, work time from the time management module, spraying history, and equipment status data.

[0027] Other specific details of the present invention are included in the detailed description and drawings. Effects of the invention

[0029] According to various embodiments of the present invention, a liquid spraying system for reducing environmental hazards and improving the working environment is provided. First, the present invention overcomes the positional limitations of existing fixed systems through a modular structure that can be mounted on a mobile means, enabling rapid deployment to various work sites. Furthermore, through the selective spraying of different liquids, customized responses ranging from simple dust suppression to fundamental prevention are possible.

[0030] Furthermore, the liquid spraying system of the present invention can minimize labor input and maximize resource usage efficiency by detecting environmental data in real time and automatically optimizing the liquid type, spray volume, and spray direction through multivariable functions and step-by-step control, and enables stable operation throughout all four seasons by resolving winter freezing issues through an automatic drainage function.

[0031] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Brief explanation of the drawing

[0033] Various aspects are now described with reference to the drawings, wherein similar reference numbers are used to collectively refer to similar components. In the following embodiments, for illustrative purposes, a number of specific details are presented to provide a comprehensive understanding of one or more aspects. However, it will be apparent that such aspect(s) may be practiced without these specific details. FIG. 1 is a schematic diagram showing the overall configuration including a liquid injection system related to one embodiment of the present invention. FIG. 2 is an exemplary block diagram of a liquid injection system related to one embodiment of the present invention. FIG. 3 is an exemplary diagram schematically illustrating the shape of a liquid injection system related to one embodiment of the present invention mounted on a means of transport. FIG. 4 is an exemplary diagram schematically illustrating the shape of a liquid injection system related to one embodiment of the present invention detached from a moving means. FIG. 5 is an illustrative diagram for explaining a spray head related to one embodiment of the present invention. FIG. 6 is an illustrative diagram for explaining a drain portion related to an embodiment of the present invention. FIG. 7 is an illustrative diagram for explaining a blower unit of a spray head related to one embodiment of the present invention. Specific details for implementing the invention

[0034] Various embodiments and / or aspects are now disclosed with reference to the drawings. For illustrative purposes, numerous specific details are disclosed in the following description to aid in a general understanding of one or more aspects. However, it will be apparent to those skilled in the art that these aspects may be practiced without such specific details. The following description and the accompanying drawings describe specific exemplary aspects of one or more aspects in detail. However, these aspects are exemplary, and some of the various methods in the principles of the various aspects may be used, and the descriptions are intended to include all such aspects and their equivalents. Specifically, terms such as “exemplary,” “example,” “aspect,” and “example” as used herein may not be interpreted as implying that any described aspect or design is superior or advantageous to other aspects or designs.

[0035] Hereinafter, identical or similar components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. Furthermore, in describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the embodiments disclosed in this specification. Additionally, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings.

[0036] Although terms such as "first," "second," etc., are used to describe various elements or components, it goes without saying that these elements or components are not limited by these terms. These terms are used merely to distinguish one element or component from another. Therefore, it goes without saying that the first element or component mentioned below may also be the second element or component within the technical scope of the present invention.

[0037] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0038] Furthermore, the term "or" is intended to mean an implicit "or" rather than an exclusive "or." That is, unless otherwise specified or evident from the context, "X uses A or B" is intended to mean one of the natural implicit substitutions. In other words, if X uses A; if X uses B; or if X uses both A and B, "X uses A or B" may apply to any of these cases. Additionally, the term "and / or" as used herein should be understood to refer to and include all possible combinations of one or more of the enumerated related items.

[0039] Additionally, the terms “comprising” and / or “comprising” should be understood to mean that such features and / or components are present, but not to exclude the presence or addition of one or more other features, components, and / or groups thereof. Furthermore, unless otherwise specified or clearly evident from the context to indicate a singular form, the singular in this specification and claims should generally be interpreted to mean “one or more.”

[0040] When it is stated that one component is “connected” or “connected” to another component, it should be understood that it may be directly connected or connected to that other component, or that there may be other components in between. On the other hand, when it is stated that one component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

[0041] The suffixes “module” and “part” for components used in the following description are assigned or used interchangeably solely for the ease of drafting the specification and do not inherently possess distinct meanings or roles.

[0042] When elements or layers are referred to as being "on" or "on" another element or layer, it includes not only being directly on top of the other element or layer but also cases where another layer or element is interposed in between. On the other hand, when a component is referred to as being "directly on" or "immediately on," it indicates that no other element or layer is interposed in between.

[0043] Spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used to easily describe the relationship between one component or other components as illustrated in the drawings. Spatially relative terms should be understood as encompassing different orientations of the element during use or operation, in addition to the directions illustrated in the drawings.

[0044] For example, if a component depicted in a drawing is inverted, a component described as being "below" or "beneath" another component may be placed "above" the other component. Therefore, the exemplary term "below" may encompass both the downward and upward directions. Components may also be oriented in other directions, and accordingly, spatially relative terms may be interpreted according to the orientation.

[0045] The objectives and effects of the present invention, and the technical configurations for achieving them, will become clear by referring to the embodiments described in detail below in conjunction with the accompanying drawings. In describing the present invention, if it is determined that a detailed description of known functions or configurations may unnecessarily obscure the essence of the invention, such detailed description will be omitted. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator.

[0046] However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to make the present invention complete and to fully inform those skilled in the art of the scope of the disclosure, and the present invention is defined only by the scope of the claims. Therefore, such definition should be based on the content throughout this specification.

[0048] According to one embodiment of the present invention, the liquid spraying system (10) may be an intelligent environmental improvement device that detects various environmental harmful elements such as fine dust, dust, odors, and high temperatures generated at a work site in real time and selectively sprays a liquid optimized for the environmental data to effectively reduce them.

[0049] The liquid spraying system (10) of the present invention goes beyond the conventional simple water spraying method and automatically selects and sprays liquids of different characteristics, such as water and surface hardeners, according to environmental data, thereby providing comprehensive environmental improvement effects ranging from simple dust suppression to fundamental blocking of dust sources. In addition, through a modular structure that can be mounted on a mobile vehicle, it can be quickly deployed to various work sites, and equipped with an automatic drain function to prevent freezing in winter, it can be operated stably throughout all four seasons.

[0050] In particular, the liquid spraying system (10) of the present invention can provide a predictive control function utilizing wide-area environmental information through communication with an external server. The external server can be linked with the environmental monitoring systems of the Korea Meteorological Administration, the Ministry of Environment, and local governments to provide real-time weather information, air quality index, fine dust forecast, and wind direction and speed prediction data for the relevant area. The system can automatically perform preventive spraying operations and select the optimal liquid by comprehensively analyzing such wide-area environmental data and field measurement data. In addition, the external server can provide big data such as regional industrial characteristics, seasonal environmental patterns, and past environmental history of the work site.

[0051] The user terminal can serve as an interface for remote monitoring and control of the liquid injection system (10). Users can monitor the system's real-time operating status, environmental measurements, remaining liquid amount, injection history, and equipment status at any time and anywhere through a user terminal such as a smartphone, tablet, or PC, and can transmit control commands such as changing the injection mode, selecting the liquid type, setting the injection schedule, and executing the drain function remotely when necessary. In addition, the user terminal can provide a real-time alarm function in the event of a system malfunction to enable a rapid response, and can manage liquid injection systems deployed at multiple sites in an integrated manner through GPS-based multi-system management. Operator feedback and site characteristic information collected through the user terminal can be transmitted to an external server and utilized for continuous performance improvement of the system and development of customized control algorithms.

[0053] Hereinafter, with reference to various drawings, the components of the present invention and the technical effects exhibited by their combination will be explained in more detail.

[0054] FIG. 1 is a schematic diagram showing the overall configuration including a liquid injection system related to an embodiment of the present invention, FIG. 2 is an exemplary block diagram of a liquid injection system related to an embodiment of the present invention, FIG. 3 is an exemplary diagram schematically illustrating the shape of a liquid injection system related to an embodiment of the present invention mounted on a moving means, FIG. 4 is an example schematically illustrating the shape of a liquid injection system related to an embodiment of the present invention removed from a moving means, FIG. 5 is an exemplary diagram for explaining an injection head related to an embodiment of the present invention, FIG. 6 is an exemplary diagram for explaining a drain part related to an embodiment of the present invention, and FIG. 7 is an exemplary diagram for explaining a blower unit of an injection head related to an embodiment of the present invention.

[0056] Referring to FIGS. 1 and 2, the environmental sensing sensor unit (100) is configured to detect at least one environmental data among weather conditions at the work site, air pollution level, and dust dispersion amount, and can provide key input data for the intelligent control of the present invention.

[0057] In one embodiment, the environmental sensing unit (100) may include a PM2.5 and PM10 sensor for measuring fine dust concentration, a temperature and humidity sensor for measuring ambient temperature and humidity, a wind direction and speed meter for measuring wind direction and wind speed, and an optical dust sensor for measuring dust dispersion amount.

[0058] For example, PM2.5 and PM10 sensors can be implemented using a laser scattering method, a beta-ray absorption method, or an electrostatic induction method, and can measure the fine dust concentration in μg / m³ in real time and transmit it to the control unit (300). The measured fine dust concentration is used as a selection criterion for water or a surface hardener in the liquid selection module (310), and can be used as basic data for determining the number of nozzle operations and adjusting the spray amount in the spray control module (320). In addition, it can serve as a trigger to automatically activate an emergency spray mode when the fine dust concentration increases rapidly above a certain level.

[0059] For example, the temperature and humidity sensor may be composed of a digital composite sensor, a resistive sensor, or a capacitive sensor, and can measure the ambient temperature and relative humidity in real time. The measured temperature data is used in the liquid selection module (310) to determine the necessity of an evaporative cooling effect and to correct the curing speed of the surface hardener, and can be used as a condition for initiating the automatic drainage function of the drain section (240). The humidity data can be used to determine the timing of the use of the surface hardener by detecting the dry state and to control the concentration of the wetting agent mixture.

[0060] For example, the wind direction and speed meter may be configured as an ultrasonic, mechanical, or thermal type, and can measure wind direction as an azimuth and wind speed in m / s units. The measured wind direction data can be directly utilized in the direction control module (330) for automatic directional control of the spray head (230) to predict the direction of dust diffusion and enable the formation of an effective barrier. The wind speed data can be utilized in the spray control module (320) for spray volume correction to compensate for the reduction in spray efficiency caused by wind and for controlling the airflow volume of the blower unit (233).

[0061] For example, the optical dust sensor can be implemented using a laser light scattering method, an infrared transmission method, or an image analysis method, and can monitor the amount of dust dispersion at the work site in real time in mg / m³ units. The measured amount of dust dispersion is used as a key indicator for determining the necessity of using a surface hardener in the liquid selection module (310), and can be reflected in the calculation of an environmental index and the selection of a spray mode in the spray control module (320). In addition, an alarm function can be provided for immediate response spraying in the event of a rapid increase in the amount of dust dispersion.

[0062] In one embodiment, each sensor of the environmental sensing unit (100) is housed in a housing equipped with dustproof and waterproof functions, allowing for stable measurement even under adverse weather conditions, and maintaining measurement accuracy through a periodic automatic calibration function. For example, the environmental sensing unit (100) can be mounted at various locations on the liquid spraying system (10), and the environmental sensing unit (100) can be installed on the upper or side of the modular frame (210) to directly measure environmental data of the work site, and in particular, by being installed in a location close to the spray head (230), it can precisely detect local environmental changes around the spray point. In another embodiment, the environmental sensing unit (100) is attached to the first arm (231-a) or the second arm (231-b) of the lift unit (231) and moves together with the height change of the spray head (230) to measure the difference in environmental data at each height. In another embodiment, the environment sensing unit (100) may be installed near the driver's seat of the vehicle or on the top of the vehicle to enable continuous environmental monitoring even while moving.

[0063] In addition, separate from the environmental sensing unit (100), the control unit (300) can receive wide-area environmental data through wireless communication with a weather station, an air quality monitoring station, or an environmental monitoring system at an industrial site that is already installed at the work site. The control unit (300) can be connected to an external server operated by the Korea Meteorological Administration, the Ministry of Environment, or a local government through a communication module (340) to obtain environmental data such as real-time weather information, air quality indices, and fine dust forecasts for the area. By comprehensively analyzing this wide-area environmental data and on-site measurement data, it is possible to respond more accurately and predictively to the environment. For example, by comparing and analyzing the forecast of increased fine dust concentration received from the external server with the real-time measurement value from the on-site sensor, a preemptive spraying operation can be performed, or the optimal liquid selection and spraying schedule can be automatically adjusted according to the prediction of weather changes.

[0065] Referring to FIGS. 2, 3 and 4, the spraying unit (200) is configured to be mounted on a moving vehicle and selectively spray different liquids, and may include a modular frame (210), a tank unit (220), a spray head (230), and a drain unit (240).

[0066] In one embodiment, the modular frame (210) is structured to be connectable and detachable from a means of transport and is made of high-strength steel or aluminum alloy, etc., to stably support each component. The lower part of the frame (210) is provided with a connecting part conforming to ISO standard container specifications, allowing for rapid loading and unloading onto various means of transport or structures such as trucks, trailers, and other structures.

[0067] In particular, the modular frame (210) may include a plurality of outriggers (211) that are rotatably installed on its side and rotated to be perpendicular to the modular frame (210) in a horizontal state and then unfolded in a vertical direction.

[0068] For example, the outrigger (211) can be operated in two ways, the first being in a horizontal state where the outrigger (211) is placed directly on the ground. In this case, a space for the forklift's forks to be inserted, such as a forklift pallet, is formed on one side of the modular frame (210), so that it can be moved to a means of transport or another location using a forklift. Through this structure, easy movement and placement are possible even in narrow spaces or places with limited access.

[0069] The second method involves the outrigger (211) being converted to a vertical state and then settling on the ground, which allows it to be easily settled on the vehicle without the assistance of a forklift. Specifically, by adjusting the height of the outrigger (211) in the vertical direction to sufficiently separate the modular frame (210) from the ground, the vehicle enters the separated space, and then the modular frame (210) is settled on the vehicle again by adjusting the height of the outrigger (211), and the outrigger (211) is converted from a vertical state to a horizontal state, the injection unit (200) can be easily mounted on the vehicle without a forklift.

[0070] In one embodiment, each outrigger (211) is driven by a hydraulic cylinder or an electric motor and can independently perform horizontal-vertical rotation and height adjustment operations. For example, a plurality of outriggers (211) are configured to be able to adjust their height independently or simultaneously under the control of a control unit (300) or through manual control means installed on the outriggers (211), thereby maintaining the horizontal level of the modular frame (210) even under uneven ground conditions. At this time, a pad for load distribution is provided at the ground contact portion of each outrigger (211) to prevent ground damage and provide stable support.

[0071] That is, through the outrigger (211), the liquid injection system (10) of the present invention can be operated stably in a stationary state even when separated from the means of transport, and the optimal installation method can be selected according to the characteristics of the work environment, so the operational flexibility can be greatly improved.

[0073] Next, referring to FIGS. 3, 4 and 6, the tank section (220) is configured to store liquid to be sprayed and consists of a first tank (221) and a second tank (222) that store different liquids, and each tank may be equipped with a water level sensor to monitor the remaining amount, and may be equipped with a water supply port, a drain port, and a cleaning manhole to provide convenience for maintenance.

[0074] In one embodiment, the first tank (221) is configured to primarily store water and may be made of polyethylene (PE), stainless steel (STS), or fiberglass reinforced plastic (FRP), and may have an epoxy coating applied to prevent internal corrosion.

[0075] Additionally, the second tank (222) is configured to store a surface hardener or other functional liquid, and can be manufactured as a tank with a PE, STS, or PTFE lining having excellent chemical resistance, taking into account the characteristics of the liquid requiring chemical stability. In particular, when storing acidic or alkaline liquids, a highly corrosion-resistant alloy material may be used.

[0076] In one embodiment, the functional liquid stored in the second tank (222) may be selectively used depending on the characteristics of the working environment. For example, a surface hardener may be used as the functional liquid stored in the second tank (222), and the surface hardener may be used in a dry and weak wind environment (e.g., humidity 40% or less, wind speed 5 m / s or less) such as a coal yard, construction site, or quarry. For example, the mixing ratio of the surface hardener may consist of 15 to 25 parts by weight of an acrylic polymer, 5 to 15 parts by weight of a silicate binder, 2 to 5 parts by weight of a penetrating agent (e.g., nonylphenol ethoxylate), 1 to 3 parts by weight of a thickening agent (e.g., xanthan gum), and the remainder being purified water, in 100 parts by weight of the total surface hardener, and can perform a fundamental dust generation suppression function by forming a reinforcing film on the surface of the dust source.

[0077] In various embodiments, a wetting agent mixture may be used as the functional liquid stored in the second tank (222), and the wetting agent mixture may be used when immediate dust suppression is required in a hot and humid summer environment (e.g., temperature above 30°C, humidity above 70%). For example, the composition ratio of the wetting agent mixture is composed of 0.1 to 0.5 parts by weight of a surfactant (e.g., sodium dodecyl sulfate), 2 to 5 parts by weight of a humectant (e.g., glycerin), 0.5 to 2 parts by weight of a coagulant (e.g., polyaluminum chloride), and the remainder being purified water, in 100 parts by weight of the total wetting agent mixture, thereby lowering the surface tension of water to increase contact efficiency with dust particles and providing a function to extend the sustained effect through suppression of evaporation.

[0078] In various embodiments, a deodorizing agent may be used as the functional liquid stored in the second tank (222), and the deodorizing agent mixture may be used in environments where odors such as ammonia and hydrogen sulfide are generated, such as in waste disposal facilities, livestock facilities, and sewage treatment plants. For example, the composition ratio of the deodorizing agent mixture is composed of 0.1 to 0.3 parts by weight of an oxidizing agent (e.g., sodium hypochlorite), 1 to 3 parts by weight of an adsorbent (activated carbon powder), 0.1 to 0.5 parts by weight of a pH adjuster (e.g., sodium hydroxide), 0.1 to 0.3 parts by weight of a surfactant (e.g., sodium dodecyl sulfate), and the remainder being purified water, in 100 parts by weight of the total deodorizing agent mixture, thereby exhibiting a complex deodorizing effect through chemical neutralization and physical adsorption of odor components.

[0079] In various embodiments, an antifreeze mixture may be used as the functional liquid stored in the second tank (222), and the antifreeze mixture may be used when continuous spraying is required in a winter environment (e.g., an ambient temperature of 5°C or lower), and the composition ratio of the antifreeze mixture may be composed of 15 to 25% ethylene glycol, 2 to 5 parts by weight of an antifreeze additive (e.g., propylene glycol), 0.5 to 1 part by weight of a corrosion inhibitor (e.g., benzotriazole), and the remainder being purified water, in 100 parts by weight of the total antifreeze mixture, thereby providing the function of preventing freezing of the spray liquid and protecting the equipment.

[0080] Additionally, the tank section (220) is equipped with a main liquid valve (223), a first auxiliary liquid valve (224), and a second auxiliary liquid valve (225) so that the supply of liquid from each tank can be precisely controlled according to a signal from the control section (300). In one embodiment, the two liquids can be pre-mixed within the piping by opening the first auxiliary liquid valve (224) and the second auxiliary liquid valve (225) sequentially or simultaneously while the main liquid valve (223) is closed. For example, when mixing a surface hardener and water in a predetermined ratio, the second auxiliary liquid valve (225) is opened for a predetermined time, and then the first auxiliary liquid valve (224) is opened for a predetermined time so that the main liquid valve (223) is opened after sufficient mixing, thereby enabling the spraying of a homogeneous mixture.

[0081] In addition, if either of the first or second auxiliary liquid valves (224, 225) is unintentionally opened due to a malfunction, the main liquid valve (223) can be immediately shut off to prevent the injection of the wrong liquid, which can serve as a safety device to prevent cross-contamination between liquids with different chemical properties. By opening the main liquid valve (223) after gradually adjusting the pressure of each tank line through the auxiliary liquid valves (224, 225), pipe damage or injection imbalance caused by sudden pressure changes can be prevented, and by independently adjusting the opening degree of each valve, fine flow rate control is possible, thereby enabling precise control of the injection amount according to changes in environmental data.

[0082] In various embodiments, when replacing the liquid, continuous operation with the liquid from another tank may be possible while cleaning the piping by completely draining the remaining liquid from one tank and injecting a cleaning solution, and inspection and cleaning of each section within the piping may be possible by sequentially operating each valve. Through this, various spraying patterns such as single liquid spraying, mixed spraying, and sequential spraying may be implemented, and the safety and reliability of the system may be improved.

[0083] In addition, although the tank section (220) in this embodiment is described as being composed of two tanks, a first tank (221) and a second tank (222), it is not limited thereto, and multiple tanks such as a third tank and a fourth tank may be additionally provided depending on various environmental data of the work site and the type of functional liquid required. For example, a deodorizing agent mixture may be stored in the third tank and an antifreeze agent mixture in the fourth tank, respectively, to enable a more detailed selection of liquids according to seasonal or site-specific characteristics. In this case, auxiliary liquid valves corresponding to each tank may be additionally provided so that selective spraying or composite spraying of multiple liquids can be implemented under the integrated control of the control section (300).

[0085] Next, referring to FIG. 5, the spray head (230) is equipped with a plurality of nozzles (N10) and is capable of height adjustment, horizontal rotation, and vertical angle adjustment. The spray head (230) may include a lift unit (231) for height adjustment, a head housing (232) in which a plurality of nozzles (N10) are installed along the inner surface of one end of the spray head in a hollow structure, and a blower unit (233) installed inside the head housing (232) and blowing air in the direction of the plurality of nozzles (N10).

[0086] In one embodiment, the lift unit (231) may include a first arm (231-a) fixedly installed on a frame, a second arm (231-b) rotatably coupled to the first arm (231-a) around a horizontal axis, and a spray head support arm (231-c) rotatably coupled to the tip of the second arm (231-b). At this time, the second arm (231-b) is driven by a hydraulic cylinder so that the spray head support arm (231-c) can be raised or lowered by changing the first angle of contact (D10) with the first arm (231-a) and the second angle of contact (D20) with the spray head support arm (231-c).

[0087] For example, in a storage state to minimize the size of the spraying unit (200), the first angle of contact (D10) is set to approximately 30 degrees and the second angle of contact (D20) is set to approximately 90 degrees, so that the entire lift unit (231) can maintain a folded state in an 'N' shape. Through this folding structure, space efficiency can be maximized when mounted on a means of transport or when not in use for a long period, and the spray head (230) can be protected from external impacts or weather conditions. At this time, in order to raise the height of the spray head (230), the first angle of contact (D10) is increased from the angle in the storage state and extended to approximately 100 degrees, and the second angle of contact (D20) is also increased from the angle in the storage state and extended to approximately 190 degrees, thereby allowing the height of the spray head support arm (231-c) to be raised step by step. At this time, the amount of change and speed of each angle between them can be precisely controlled by the lift unit (231) by the control unit (300) to enable accurate positioning at the desired height and angle.

[0088] In one embodiment, for horizontal rotation of the spray head (230), a horizontal rotation part composed of a rotary bearing and a drive motor may be provided at the top of the spray head support arm (231-c), and the horizontal rotation part may rotate the spray head (230) 340 degrees on a horizontal plane according to a signal from the control unit (300). In addition, for adjusting the vertical angle of the spray head (230), a tilting mechanism may be provided between the head housing (232) and the horizontal rotation part, and the tilting mechanism may be driven by a hydraulic or electric actuator to adjust the spray angle of the spray head (230) in a vertical direction. For example, the tilting mechanism may rotate the spray head (230) from -24 degrees to +45 degrees on a vertical plane according to a signal from the control unit (300).

[0089] Through the combination of this multi-jointed arm structure and rotation and tilting mechanism, the spray head (230) can be 3D positionally adjusted to be optimized for various terrain conditions and dust generation patterns at the work site, and can be automatically adjusted to the optimal spray position and angle based on wind direction and dust diffusion direction information obtained from the environment sensing sensor unit (100).

[0090] Continuing with reference to FIGS. 6 and 7, the head housing (232) has a hollow structure, and a plurality of nozzles (N10) may be installed along the inner circumference of one end of the injection head. In one embodiment, the nozzles (N10) may be arranged in three circular shapes, and the nozzle located in the first stage may be connected to a first circular pipe (P11), the nozzle located in the second stage may be connected to a second circular pipe (P12), and the nozzle located in the third stage may be connected to a third circular pipe (P13). At this time, the thicknesses of the first to third pipes (P11, P12, P13) may be formed differently from each other, for example, they may be thick in the order of the thickness of the first pipe (P11), the thickness of the second pipe (P12), and the thickness of the third pipe (P13). With this differential pipe thickness design, when only nozzles placed in one stage are selectively used, the injection pressure and injection distance can be finely adjusted according to the pipe thickness, and the injection pressure and injection distance may vary even at the same pressure due to the different thicknesses. For example, when injection through the first pipe (P11), high injection pressure and long-distance injection are possible, and when injection through the third pipe (P13), close-range precision injection with relatively low injection pressure may be possible.

[0091] In one embodiment, the nozzle (N10) may be made of stainless steel or ceramic material, and if wear resistance and chemical resistance are required, a cemented carbide or diamond-coated nozzle may be used. Each stage nozzle (N10) is equipped with a solenoid valve (243) that can be opened and closed stage by stage or individually according to a signal from the control unit (300), thereby enabling selective spraying based on environmental data. Through this, when the fine dust concentration is low, only the third stage nozzle is used to perform minimal spraying, and when the fine dust concentration is high, the nozzles of all stages are used simultaneously to achieve maximum spraying effect.

[0092] In one embodiment, referring to FIG. 7, a blower unit (233) is installed inside the head housing (232) to blow air in the direction of a plurality of nozzles (N10). The blower unit (233) may include a motor part (233-a) equipped with a centrifugal or axial fan and a guide member (233-b) for rectifying the blower flow inside the head housing (232). The guide member (233-b) is formed with a radial or spiral vane structure to evenly distribute the blower flow and suppress the generation of vortices, thereby expanding the diffusion range of the sprayed liquid and improving the spraying efficiency.

[0093] In one embodiment, the airflow volume of the blower unit (233) can be variably controlled according to environmental data, for example, it can operate at the maximum airflow volume in a windless state to create an artificial diffusion effect, and reduce the airflow volume in a strong wind state to minimize distortion of the spray pattern caused by the wind. Through this, uniform spraying over a wider area is possible with the same amount of liquid, and in particular, fine particle formation and wide diffusion can be realized even when spraying high-viscosity liquids such as surface hardeners.

[0094] Next, referring to FIG. 6, the drain unit (240) is configured to discharge residual liquid in the piping and nozzle according to preset conditions and may include a first valve (241), a second valve (242), and a third valve (243) operated by a control signal from a control unit (300). At this time, the preset conditions may be at least one of detection of an ambient temperature threshold or lower, exceeding a preset non-use time, and a liquid replacement time.

[0095] In one embodiment, the ambient temperature threshold can be set within the range of 3°C to 5°C considering regional climate conditions, and if the temperature sensor continuously detects the ambient temperature threshold for 3 minutes or more, an automatic draining procedure by the drain unit (240) may be initiated. Additionally, the set non-use time may be set within the range of 12 to 24 hours from the time the last spraying operation of the system is completed, and when such time elapses, automatic draining by the drain unit (240) may be executed to prevent the deterioration of the liquid in the pipe and to maintain the cleanliness of the system. Additionally, the liquid replacement time may be set directly by the user through the control unit (300), or automatic draining by the drain unit (240) may be executed when the liquid usage reaches a predetermined ratio of the tank capacity based on the measurement value of the water level sensor installed in the tank.

[0096] For example, the drain unit (240) can completely remove residual liquid in the system through a stepwise drainage procedure when the corresponding condition is detected. This automatic drainage function can prevent equipment damage caused by freezing in winter and ensure stable operation throughout all four seasons. In various embodiments, when the temperature sensor detects a temperature below a set temperature, the control unit (300) can automatically execute the drain procedure. In the first step, the main residual liquid can be primarily removed by opening the first valve (241), the second valve (242), and the third valve (243) to perform natural drainage of the entire system. In the second step, the third valve (243) can be closed and the first valve (241) opened, and compressed air can be supplied from the compressed air supply unit (510) to forcibly discharge residual water in the main pipe and branch pipe up to the third valve (243). At this time, the pressure of the supplied compressed air is adjusted to a range of 3 bar to 6 bar, so that effective removal of residual water without pipe damage is possible. In the third step, compressed air is supplied while the first valve (241) is closed, the third valve (243) is opened, and the second valve (242) is closed, thereby completely removing even fine residual water inside the nozzle (N10). In this process, the compressed air supply time and pressure can be applied differentially considering the characteristics of the nozzle piping for each stage, and compressed air can be supplied sequentially to the first to third pipes (P11, P12, P13) of different diameters to achieve complete removal of residual water.

[0097] Through this stepwise drainage process, complete prevention of freezing of the system is possible, and the completion of each step of drainage is monitored through pressure sensors and flow sensors, allowing the control unit (300) to check the drainage status in real time. After the entire drain procedure is completed, the system switches to standby mode and can maintain a dry state inside the pipe until the next use.

[0099] Next, referring to FIG. 2, the control unit (300) is configured to control the spraying unit (200) based on environmental data obtained from the environmental sensing sensor unit (100). It may include a liquid selection module (310) that determines the type of liquid to be sprayed from a first tank or a second tank by combining and analyzing fine dust concentration, temperature, and humidity among the environmental data; a spray control module (320) that adjusts the number of nozzles in stages and variably controls the spray amount according to the fine dust concentration and wind speed among the environmental data; a direction control module (330) that adjusts the rotation direction and spray angle of the spray head based on wind direction information among the environmental data; and a communication module (340) that stores environmental data and spray history and transmits and receives remote monitoring signals. Additionally, the control unit (300) may further include a GPS module (350) that obtains current location information and a time management module (360) that manages working time.

[0100] In one embodiment, the control unit (300) serves as a central control unit of the entire system and can manage integrated system operation through organic linkage with the environment sensing unit (100), the injection unit (200), the power unit (400), the pump unit (500), the user terminal, and an external server. Specifically, the control unit (300) receives real-time environment data from the environment sensing unit (100), distributes it to each module, and synthesizes the analysis results of each module to transmit optimized control signals to the injection unit (200), the power unit (400), and the pump unit (500).

[0101] In one embodiment, the liquid selection module (310) can automatically determine the type of liquid to be sprayed from the first tank (221) or the second tank (222) by analyzing the combination of fine dust concentration, temperature, and humidity among the environmental data. Specifically, the liquid selection module (310) calculates a first environmental index using a multivariable function with fine dust concentration, temperature, humidity, and wind speed as input variables, and selects water in the first tank when the first environmental index is within a first range, the temperature is above a first temperature, and the humidity is below a first humidity, and corrects the spray amount by a first multiplier when the wind speed is above a first wind speed, and selects a surface hardener in the second tank when the first environmental index is within a second range, the dust scattering amount is above a first scattering amount, and the humidity is below a second humidity, and the wind speed is below a second wind speed, and generates a correction signal to increase the surface hardener concentration by a first ratio when the temperature is above a second temperature, and transmits the calculation result of the multivariable function and the correction signal to the spray control module.

[0102] For example, if the PM2.5 concentration is measured at 35 μg / m³, the temperature at 32°C, the humidity at 45%, and the wind speed at 2.5 m / s at a construction site in the summer, the first environmental index can be calculated using a multivariable function as follows: First environmental index = (35 × 0.4) + (32 × 0.2) + (45 × 0.2) + (2.5 × 0.2) = 14 + 6.4 + 9 + 0.5 = 29.9. Since this value falls within the first range (0 to 50), the temperature (32°C) is above the first temperature (25°C), and the humidity (45%) is below the first humidity (60%), the liquid selection module (310) determines that an evaporative cooling effect is required and can select water from the first tank (221). At this time, since the wind speed (2.5 m / s) is lower than the first wind speed (5 m / s), the injection amount correction may not be applied.

[0103] Conversely, in a winter coal storage yard, if the PM10 concentration is measured at 120 μg / m³, the temperature at 8°C, the humidity at 35%, the wind speed at 1.8 m / s, and the dust dispersion amount at 180 μg / m³, the first environmental index falls within the second range (51 to 80), the dust dispersion amount (180 μg / m³) is greater than or equal to the first dispersion amount (150 μg / m³), and the humidity (35%) is less than or equal to the second humidity (40%), and the wind speed (1.8 m / s) is less than or equal to the second wind speed (3 m / s), the conditions are satisfied, so it is determined that long-term dust suppression is required, and the surface hardener of the second tank (222) can be selected. At this time, since the temperature (8°C) is lower than the second temperature (30°C), the correction for increasing the surface hardener concentration may not be applied.

[0104] This multivariate function-based liquid selection method is characterized by its ability to accurately select the liquid most suitable for site conditions by comprehensively considering complex environmental conditions rather than a single variable. In particular, by determining the necessity of evaporative cooling effects through the combination of temperature and humidity, and identifying the conditions for the effective application of surface hardeners through the combination of dust dispersion volume and wind speed, it is possible to achieve a fundamental dust suppression effect that cannot be resolved by simple water spraying.

[0105] In another embodiment, the liquid selection module (310) may use a time-based weighting method. For example, the liquid may be optimized for each time period by increasing the temperature weight to prioritize the evaporative cooling effect during the morning hours (06:00 to 12:00), increasing the fine dust concentration weight to prioritize the dust suppression effect during the afternoon hours (12:00 to 18:00), and increasing the humidity weight to prioritize the curing conditions of the surface hardener during the night hours (18:00 to 06:00).

[0106] In another embodiment, the liquid selection module (310) may apply a predictive liquid selection method utilizing weather forecast data received from an external server. For example, if there is a forecast of precipitation within the next two hours, the use of the surface hardener may be restricted and water spraying may be prioritized, or if there is a forecast of strong winds, the surface hardener may be used in advance to immobilize the dust source in advance, thereby preemptively responding to weather changes.

[0107] In an additional embodiment, the liquid selection module (310) may apply a customized selection algorithm that reflects the characteristics of the work site. For a coal storage yard, the selection of a surface hardener is prioritized by giving a higher weight to the amount of dust dispersion; for a waste treatment plant, the deodorizing agent mixture is selected by considering whether odors are generated as an additional variable; and for a construction site, the selection of a liquid optimized for the characteristics of each site can be implemented by automatically selecting water spraying during the work and surface hardener spraying after the work is finished, linked to the work time.

[0108] In addition, the analysis results of the liquid selection module (310) are transmitted to the injection control module (320) and used to adjust injection parameters suitable for the selected liquid, and can also be reflected in the generation of control signals for the main liquid valve (223) and auxiliary liquid valves (224, 225) of the tank unit (220). In addition, power supply status information is received from the power unit (400), and in situations where power saving is required, the system can switch to a low-power mode or simplify the liquid selection algorithm to improve processing speed.

[0109] In one embodiment, the injection control module (320) can adjust the number of operating nozzles (N10) in stages and variably control the injection amount according to the fine dust concentration and wind speed among the environmental data.

[0110] Specifically, the injection control module (320) calculates a second environmental index by adding fine dust concentration, wind speed, temperature, and dust dispersion amount, and controls the injection by selecting a first mode in which the second environmental index is below a first threshold, the wind speed is below a third wind speed, and the temperature is below a third temperature, and the first number of nozzles are sprayed at a first injection pressure; a second mode in which the second environmental index is above a first threshold and below a second threshold, or the wind speed is above a third wind speed and below a fourth wind speed, and the injection pressure is variably adjusted from the first injection pressure to the second injection pressure in proportion to the increase in wind speed; and a third mode in which the second environmental index is above a second threshold and the injection is controlled by controlling the injection to a third number of nozzles, and the injection pressure is fixed at the third pressure and the injection time is extended by a second multiplier compared to the first mode, and transmits information about the calculated second environmental index and the selected mode to the direction control module.

[0111] For example, if the PM2.5 concentration is measured at 45 μg / m³, the wind speed at 1.5 m / s, the temperature at 18°C, and the amount of dust dispersion at 80 μg / m³ at a construction site in the spring, the second environmental index can be calculated as follows: Second environmental index = 45 + (1.5 × 10) + (18 × 2) + (80 × 0.5) = 45 + 15 + 36 + 40 = 136. Since this value is greater than the first threshold value (100) and less than or equal to the second threshold value (200), the injection control module (320) can determine that an intermediate level of environmental improvement is required and select the second mode. In the second mode, a second number of nozzles (e.g., 90) are operated, and since the wind speed (1.5 m / s) is less than or equal to the third wind speed (2 m / s), the injection pressure can be maintained at the level of the first injection pressure (e.g., 20 bar).

[0112] Conversely, when the PM2.5 concentration at a waste treatment plant in summer is measured at 85 μg / m³, the wind speed at 6.2 m / s, the temperature at 35°C, and the amount of dust dispersion at 220 μg / m³, the second environmental index is calculated as 85 + (6.2 × 10) + (35 × 2) + (220 × 0.5) = 85 + 62 + 70 + 110 = 327. Since this exceeds the second threshold value (200), it is determined that a situation requiring high-intensity environmental improvement is required, and the third mode can be selected. In the third mode, a third number of nozzles (e.g., 135) are operated, the spray pressure is fixed at a third pressure (e.g., 60 bar), and the spray time is extended by a second multiplier (e.g., 1.5 times) compared to the first mode, thereby enabling a strong dust suppression effect.

[0113] This stepwise injection control method is characterized by providing a response intensity precisely proportional to the level of environmental pollution, thereby preventing excessive resource consumption while enabling the achievement of powerful environmental improvement effects when necessary. In particular, wind-speed-linked variable pressure control in the second mode compensates for the reduction in injection efficiency caused by wind in real time to maintain consistent dust suppression performance, while extended injection in the third mode ensures complete environmental improvement by securing sufficient processing time in high-concentration pollution situations.

[0114] In another embodiment, the injection control module (320) may use an adaptive learning-based control method. By analyzing past injection history and the resulting environmental improvement effects, the injection pattern that was most effective under current environmental conditions is automatically selected, thereby enabling injection control optimized for the site over time. For example, if it is confirmed that the extended injection of the first mode is more effective than the second mode at a specific site, the extended injection of the first mode can be automatically applied first under similar environmental conditions.

[0115] In another embodiment, the spray control module (320) may apply a work schedule linkage control method. By receiving work schedule information from the time management module (360), it can automatically switch to different modes to perform preventive surface hardening spraying before the start of work, real-time dust suppression spraying during work, and residual dust removal spraying after the end of work. Through this, work efficiency and environmental protection can be achieved simultaneously.

[0116] In an additional embodiment, the injection control module (320) may use an energy efficiency optimization control method. Based on power status information received from the power unit (400), the injection mode can be dynamically adjusted according to the remaining battery capacity or the amount of generator fuel. For example, when power is sufficient, a standard mode is applied, and when power is insufficient, a low-power mode is switched to ensure continuous operation by reducing the number of nozzles or lowering the injection pressure.

[0117] Additionally, the injection control module (320) controls the selective operation of each stage nozzle piping (P11, P12, P13) by reflecting the liquid type and correction signal received from the liquid selection module (310), and can transmit pressure and flow rate control signals to the pump (520) and compressed air supply unit (510) of the pump unit (500). Furthermore, by receiving power consumption information in real time from the power unit (400), it can automatically switch to a low-power injection mode or shorten the injection time to ensure power efficiency when the remaining battery level or generator fuel level is insufficient.

[0118] In one embodiment, the direction control module (330) can adjust the rotation direction and spray angle of the spray head (230) based on wind direction information among environmental data. By receiving real-time wind direction data from a wind direction sensor, the direction of dust diffusion can be predicted, and the spray head (230) can be directed in the corresponding direction to enable efficient dust blocking.

[0119] Specifically, the direction control module (330) can calculate the optimal blocking position by performing a dust dispersion prediction algorithm based on wind direction data. For example, if a southerly wind (180 degrees) is detected at 3.5 m / s, it is predicted that the dust will spread in the north direction, so the spray head (230) is directed toward the north (0 degrees) and the spray angle is adjusted upward in the vertical direction by +15 degrees to effectively block the dust spreading in the air. At this time, the stronger the wind speed (e.g., 5 m / s or more), the wider the spray angle (±30 degrees) is adjusted to form a wide barrier, and the weaker the wind speed (e.g., 2 m / s or less), the narrower the spray angle (±10 degrees) is adjusted to achieve intensive dust suppression.

[0120] Additionally, the direction control module (330) can receive selected injection mode information from the injection control module (320) and determine an injection angle and rotation range suitable for each mode. In the first mode, precise control of a specific dust source is performed through fixed-direction concentrated injection, in the second mode, dust diffusion in the intermediate range is blocked through left-right swing injection (±45 degree range), and in the third mode, a wide-area dust suppression effect can be achieved through omnidirectional rotation injection (360 degrees).

[0121] This wind-linked directional control method is characterized by its ability to achieve maximum environmental improvement effects with the same spray volume by accurately predicting the natural diffusion patterns of dust and preemptively blocking them. In particular, through real-time response to wind direction and intensity, dust can be effectively suppressed near the source before it spreads to surrounding areas, playing a crucial role in preventing widespread pollution.

[0122] In another embodiment, the direction control module (330) may apply a time-based pattern control method. By applying different spray patterns depending on the time of day, control optimized for regional weather patterns may be possible, such as performing spraying mainly in the westward direction in the morning considering regional characteristics where easterly winds mainly occur, and performing spraying mainly in the eastward direction in the afternoon since westerly winds mainly occur. Through such pattern learning, it is possible to proactively respond to actual changes in wind direction.

[0123] Additionally, the direction control module (330) can apply an energy efficiency optimization control method. When using battery power in conjunction with the power unit (400), fixed-direction spraying is selected first to minimize the movement of the spray head (230), and when using external power, more precise and frequent direction adjustments can be performed. For example, when the battery level is 30% or less, the rotational movement of the spray head (230) is limited to 10-minute intervals, and when external power is supplied, real-time direction adjustment is performed at 1-minute intervals, thereby maintaining a balance between power efficiency and control precision.

[0124] Additionally, the direction control module (330) can perform position control of the spray head (230) by transmitting a driving signal to the horizontal rotation part and tilting mechanism of the lift unit (231), and can determine the spray direction and angle suitable for the characteristics of each liquid by combining the spray mode information received from the spray control module (320) and the liquid type information received from the liquid selection module (310). For example, when spraying a surface hardener, a downward spray (-15 degrees) toward the ground is applied first, and when spraying water, an upward spray (+30 degrees) for air diffusion is applied, thereby implementing differentiated direction control that reflects the characteristics of each liquid.

[0125] In one embodiment, the communication module (340) can store environmental data and injection history and transmit and receive remote monitoring signals. For example, the communication module (340) supports various communication methods such as LTE / 5G, Wi-Fi, and Bluetooth, and can enable system status monitoring, remote control, firmware updates, etc. through real-time data exchange with a remote control center.

[0126] Specifically, the communication module (340) may include a data transmission function, a data reception function, a data storage function, and a protocol conversion function. The data transmission function can periodically transmit real-time environmental data collected from the environmental sensing sensor unit (100), the operating status of each control module, operation information of the pump unit (500) and power unit (400), and remaining amount information of the tank unit (220) to a user terminal and an external server. The transmission cycle can be variably adjusted according to environmental conditions and power status, and can be switched to an immediate transmission mode in emergency situations. The data reception function can receive remote control commands from the user terminal, weather forecasts and environmental information from an external server, firmware update files, and work schedule change information, and distribute them to the corresponding modules. The received control commands are executed after their validity is verified through a security authentication process, thereby protecting the system from malicious access or incorrect commands. The data storage function can store environmental data, injection history, equipment status logs, error occurrence records, etc., in the form of a time-series database through an internal memory or an external storage device. The stored data can be utilized for statistical analysis, performance optimization, and predictive maintenance, and enables batch transmission at the time of recovery without data loss, even in the event of a temporary communication interruption. The protocol conversion function can perform conversions to standard protocols such as MQTT, HTTP, and TCP / IP to ensure compatibility between different communication methods and data formats. This allows for interoperability with external systems from various manufacturers and enables integrated operation with existing environmental monitoring infrastructure.

[0127] In one embodiment, the GPS module (350) is configured to acquire current location information and may include a satellite signal reception and location calculation function, a geofencing function, and a movement path recording function.

[0128] For example, the GPS module (350) can receive signals from satellites to calculate longitude and latitude information in real time and can generally provide positional accuracy of about 3-5 meters. A high-sensitivity antenna may be provided to improve signal quality, and a filtering function may be applied to correct signal interruptions or accuracy degradation. The geofencing function can virtually set the boundaries of a pre-set work area and automatically detect when the liquid spraying system (10) enters or exits the area and transmit a signal to the control unit (300). It can serve as a trigger to automatically apply different spraying modes for each area. The movement path recording function can record and store the movement path of the liquid spraying system (10), the time spent at each location, and work details in real time. The stored data can be transmitted to a user terminal via the communication module (340) and used for work efficiency analysis and report generation. The GPS module (350) can provide a location-based automatic control function that automatically starts or ends the spraying operation when a specific location is reached in conjunction with the time management module (360), and can automatically adjust the location update cycle according to the speed of movement to save power.

[0129] In one embodiment, the time management module (360) is configured to manage work time and may include a schedule management function, a timer control function, a work time optimization function, and a maintenance notification function.

[0130] For example, the schedule management function allows for the establishment and management of daily, weekly, and monthly work plans, and enables the automatic application of different spraying modes for each time period. For instance, differentiated environmental management by time of day is possible; for instance, the working hours can be set from 8 AM to 6 PM on weekdays to activate a real-time dust suppression mode, while a preventive surface hardening mode can be applied during nights and weekends. The timer control function can automatically start or stop spraying operations according to set time intervals, and allows for precise control of spraying duration, rest periods, and repetition counts. This enables regular and efficient environmental management without direct user intervention. The work time optimization function can automatically identify and suggest the most effective spraying times through the analysis of past work data. For instance, if a pattern of concentrated dust generation is identified at a specific site at 10 AM and 3 PM, preemptive spraying can be automatically scheduled during those times to prevent dust generation at the source. The maintenance notification function can provide advance notifications regarding the timing of regular inspections, replacement of consumables, and the need for overhauls by accumulating and managing the usage time, number of operations, and degree of performance degradation of each component. For example, preventive maintenance can be performed by generating a maintenance notification when the accumulated operating time of the pump (520) reaches 1,000 hours, and providing a replacement notification when the number of sprays from the nozzle (N10) reaches a set value.

[0131] Additionally, the control unit (300) can integrally control the liquid injection system (10) through a cyclic operation sequence of a system initialization step, an environment data collection step, a data analysis and control signal generation step, a component control execution step, and a result monitoring step.

[0132] For example, during the system initialization phase, the control unit (300) can check whether each module is operating normally after confirming a stable power supply from the power unit (400). Sensor calibration of the environment sensing unit (100), verification of the satellite signal reception status of the GPS module (350), verification of the network connection status of the communication module (340), and diagnosis of the hardware status of the pump unit (500) and drain unit (240) can be performed sequentially. In addition, the basic system status, such as the remaining liquid amount of the tank unit (220), the position status of the spray head (230), and the open / closed status of each valve, can be checked.

[0133] Next, in the environmental data collection stage, real-time environmental data such as fine dust concentration, temperature, humidity, wind direction, wind speed, and dust dispersion amount can be periodically collected from the environmental sensing sensor unit (100). At the same time, current location information can be collected from the GPS module (350), current work schedule information from the time management module (360), and weather forecast data from an external server via the communication module (340). The collected data undergoes a validation process so that abnormal data is filtered out and only normal data is transmitted to the next stage.

[0134] Next, in the data analysis and control signal generation step, the liquid selection module (310), the injection control module (320), and the direction control module (330) can perform data analysis in parallel. The liquid selection module (310) calculates a first environmental index through a multivariable function and determines the optimal liquid type, while the injection control module (320) calculates a second environmental index and can select an appropriate injection mode. The direction control module (330) can calculate the optimal injection direction based on wind direction data. The analysis results of each module can be combined through an integrated control algorithm to generate a final control signal.

[0135] Next, in the component control execution step, the operation of each component may be executed sequentially or simultaneously according to the generated control signal. First, the main liquid valve (223) and auxiliary liquid valves (224, 225) of the tank section (220) are opened and closed according to the selected liquid, and the pump (520) of the pump section (500) may be operated at a determined pressure. The spray head (230) moves to a target position according to the signal of the direction control module (330), and the nozzle (N10) for each stage may operate according to the selected spray mode. The compressed air supply section (510) may supply auxiliary compressed air when necessary to improve fine spray performance.

[0136] Next, in the result monitoring stage, the operating status of each component and the environmental improvement effect can be monitored in real time. The actual injection state can be verified from the pressure sensor and flow sensor of the pump unit (500), and the control effect can be evaluated by measuring environmental changes after injection from the environment sensing sensor unit (100). Depending on whether the goal is achieved, control parameters can be adjusted in real time or the control strategy for the next cycle can be modified. In addition, all operation data can be transmitted to a user terminal and an external server via the communication module (340) to enable remote monitoring.

[0137] At this time, an exception handling sequence may be executed in special circumstances. If the temperature sensor detects a temperature below the freeze prevention threshold, a drain sequence is automatically executed first, and if a power shortage signal is detected by the power unit (400), it may switch to a power-saving mode that sequentially blocks non-core functions. Additionally, if the GPS module (350) detects departure from the work area or the time management module (360) reaches the end time of the work, a sequence to automatically stop the spraying operation may be executed.

[0138] Through this cyclic operation sequence, the control unit (300) can implement intelligent control that simultaneously ensures the safety and efficiency of the system while responding in real time to changes in environmental conditions.

[0139] In addition, it is a given basic function that all automatic control operations of the control unit (300) can also be implemented through direct operation (manual operation) by the user. The user can directly execute all control functions, such as liquid selection, spray volume adjustment, spray direction control, and work time setting, through a user terminal connected via the communication module (340) or an operation panel provided in the system.

[0140] Specifically, the user can ignore the automatic judgment result of the liquid selection module (310) and directly select the liquid of the first tank (221) or the second tank (222), and can arbitrarily set the desired number of nozzles, injection pressure, and injection time regardless of the injection mode automatically determined by the injection control module (320). In addition, the wind direction-based automatic direction control of the direction control module (330) can be disabled, and the rotation direction and injection angle of the injection head (230) can be manually operated.

[0141] These manual control functions enable immediate responses to automatic control system malfunctions or unexpected field conditions, and can be utilized when customized environmental management based on operator experience and judgment is required. Furthermore, they provide operational flexibility by allowing users to directly control each component individually, even during system inspections, maintenance, or when there are special operational requirements.

[0142] At this time, to ensure safety even in manual control mode, the control unit (300) verifies the valid range of user input values ​​and can provide warning messages or apply restriction functions for dangerous operations that may cause damage to the system. Through this, user convenience and system safety can be secured simultaneously.

[0144] Next, referring to FIGS. 2 to 4, the power unit (400) is configured to supply stable power to all components of the liquid injection system (10), and can enable continuous operation regardless of the working environment by utilizing various power sources.

[0145] In one embodiment, the power unit (400) may include a DC power supply unit connected to the battery system of the vehicle, an AC power supply unit connected to an external commercial power source, and a self-generating generator for independent power generation. The DC power supply unit may receive power from the 12V or 24V battery of the vehicle to provide basic operating power for the system, and may convert and supply the voltage required by each component through a DC-DC converter. In particular, low-power electronic components such as the control unit (300), the environment sensing unit (100), and the GPS module (350) may be driven directly by the DC power source.

[0146] In one embodiment, the AC power supply unit is equipped with a power cable and an inverter that can be connected to an external commercial power source (AC 220V or 380V) to supply stable power to a pump (520) requiring high power, a compressor of a compressed air supply unit (510), a blower unit (233) of a spray head (230), etc. The AC power supply unit may be equipped with a safety device to protect the system from overvoltage, overcurrent, leakage current, etc., and may include a filter circuit for improving power quality.

[0147] In one embodiment, the self-generating power generator may be configured as an AC generator driven by a diesel or gasoline engine, enabling independent system operation in remote areas or construction sites where external power supply is difficult. The capacity of the generator may be set considering the maximum power consumption of the system, and fuel efficiency may be improved by operating it only when necessary according to a signal from the control unit (300) through an automatic start and stop function.

[0148] In various embodiments, the power unit (400) may include an Uninterruptible Power Supply (UPS) function for uninterruptible power supply, and can ensure continuous operation of the system by automatically switching to an auxiliary power source when the main power supply is interrupted. Additionally, through a battery backup system, the minimum functions of the control unit (300) and the environment sensing sensor unit (100) can be maintained for a certain period of time even in the event of a power outage, thereby enabling the automatic drainage function of the drain unit (240) or response to emergency situations.

[0149] In various embodiments, the power unit (400) may be driven by selectively using a composite power source such as a diesel generator, an external power source, or an energy storage device (ESS) battery pack. To implement this, the power unit (400) may include a power selection switch, a power distribution device, and a power status monitoring device. The power selection switch may perform automatic or manual switching between each power source according to a signal from the control unit (300) or user operation, and the power distribution device may convert and distribute power supplied from the selected power source to meet the requirements of each component. The power status monitoring device may detect the output status of each power source, battery remaining capacity, generator fuel level, external power supply status, etc., in real time and transmit them to the control unit (300).

[0150] Through this multi-power system, the optimal power source can be automatically selected or manually switched by the user according to the working environment and power requirements, and power efficiency and operational continuity can be maximized by utilizing the characteristics of each power source. The specific power selection logic can be implemented through a priority algorithm; for example, if an external power source is available, it can be selected as the highest priority, and if an external power source is unavailable, an ESS battery pack or a diesel generator can be automatically selected based on the working time and power requirements.

[0151] For example, during short-term operation, ESS battery packs are prioritized to minimize noise and exhaust gases, while during long-term continuous operation, a diesel generator is used to ensure a stable power supply. In environments where external power is available, commercial power can be utilized to save fuel consumption. An uninterruptible switching mechanism can be applied to prevent momentary power outages during power switching, thereby ensuring a continuous power supply without interruption of system operation.

[0152] In various embodiments, the power unit (400) can perform power usage monitoring and power management functions in conjunction with the control unit (300). By measuring the power consumption of each component in real time and transmitting it to the control unit (300), energy efficiency optimization control may be possible, and information such as the remaining battery level or the generator fuel level may be transmitted to a user terminal via the communication module (340) so that the operator can remotely monitor the power status. In addition, a power management algorithm may be implemented that prioritizes the continuous operation of core functions by automatically blocking non-core functions in the event of a power shortage.

[0154] Next, referring to FIGS. 3, 4 and 6, the pump unit (500) may be composed of a compressed air supply unit (510) and a pump (520) and may operate according to a control signal from the control unit (300).

[0155] In one embodiment, the compressed air supply unit (510) is configured to supply compressed air for the automatic drainage function of the drain unit (240) and simultaneously supply auxiliary compressed air to improve the fine spray performance of the spray head (230), and may include a compressor, an air tank, and a compressed air valve (511). The compressor may be configured to be driven by an electric motor, and the air tank may store a certain amount of compressed air to enable stable pressure supply during drainage operations and continuous supply of compressed air during spraying operations.

[0156] For example, when performing a fine spray function, the compressed air supply unit (510) can achieve a spray of a finer particle size by mixing the liquid with the blower unit (233) of the spray head (230). In particular, in the case of a high-viscosity liquid such as a surface hardener, it is possible to form uniform fine particles through mixing with compressed air, thereby improving surface penetration and curing effects. The compressed air valve (511) is opened and closed according to a signal from the control unit (300) to precisely control the amount of compressed air supplied during each stage of the drainage process and spraying operation of the drain unit (240).

[0157] In one embodiment, the pump (520) may be configured to pressurize liquid from each tank of the tank section (220) to a high pressure and supply it to the spray head (230). The pump (520) may be configured as a plunger pump, a diaphragm pump, or a centrifugal pump, and an appropriate pump type may be selected depending on the type and viscosity of the liquid. In particular, a diaphragm pump may be suitable for high-viscosity liquids such as surface hardeners, while a plunger pump or a centrifugal pump may be efficient for low-viscosity liquids such as water.

[0158] Additionally, the pump (520) may be capable of variable pressure control according to a signal received from the injection control module (320) of the control unit (300), and may adjust the pressure according to environmental data and a selected injection mode. For example, it may automatically switch to low-pressure injection in the first mode and high-pressure injection in the third mode to provide an injection pressure suitable for the characteristics of the nozzle piping (P11, P12, P13) for each stage.

[0159] Additionally, the pump (520) is equipped with a pressure sensor to monitor the injection state and provide feedback information to the control unit (300). For example, the pressure sensor may be installed immediately after the discharge port of the pump (520) to measure the real-time pressure generated by the pump, and additionally, it may be installed at the branch point of each stage nozzle pipe (P11, P12, P13) to individually monitor the supply pressure for each pipe. Through this, the control unit (300) can adjust the output of the pump (520) in real time by comparing the target pressure and the actual pressure according to environmental data.

[0160] In one embodiment, the compressed air supply unit (510) can perform a stepwise drainage process in conjunction with the drain unit (240), and can supply compressed air at a differentiated pressure and time to remove residual water from the main pipe and branch pipe and to remove fine residual water inside the nozzle (N10). In particular, for the first to third pipes (P11, P12, P13) of different diameters, complete removal of residual water may be possible by applying compressed air supply conditions suitable for the pipe characteristics. In addition, the compressed air supply unit (510) can be utilized for cleaning the pipes and nozzles during system maintenance, and can prevent cross-contamination between different liquids by completely removing the previous liquid at the time of liquid replacement. Through the integrated operation of the pump unit (500) and the compressed air supply unit (510), the liquid injection system (10) can comprehensively provide functions such as intelligent liquid selection based on environmental data, step-by-step injection amount control, automatic direction control, remote monitoring, location-based automatic operation, and automatic winter drainage, thereby realizing superior environmental improvement effects and operational convenience compared to existing technology.

[0162] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

[0163] The specific embodiments described in this invention are examples and do not limit the scope of the invention in any way. For the sake of brevity of the specification, descriptions of prior electronic configurations, control systems, software, and other functional aspects of said systems may be omitted. Additionally, the connections of lines or connecting members between components shown in the drawings are illustrative of functional connections and / or physical or circuit connections, and may be replaced or additionally represented as various functional connections, physical connections, or circuit connections in actual devices. Furthermore, unless specifically stated as "essential," "importantly," etc., a component may not be strictly necessary for the application of the invention.

[0164] It should be understood that the specific order or hierarchy of steps in the presented processes is merely an example of exemplary approaches. It should be understood that, based on design priorities, the specific order or hierarchy of steps in the processes may be rearranged within the scope of the invention. The appended method claims provide various step elements in a sample order, but do not imply limitation to the specific order or hierarchy presented.

[0165] The description of the presented embodiments is provided so that any person skilled in the art may use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not limited to the embodiments presented herein, but should be interpreted in the broadest possible scope consistent with the principles and novel features presented herein. Explanation of the symbols

[0167] 10: Liquid injection system 100: Environment sensing sensor unit 200: Injection unit 210: Modular frame 211: Outrigger 220: Tank Unit 221: 1st Tank 222: 2nd Tank 223: Main liquid valve 224: First auxiliary liquid valve 225: Second auxiliary liquid valve 230: Spray head 231: Lift Unit 231-a: 1st Arm 231-b: Second arm 231-c: Spray head support arm 232: Head housing 233: Blower unit 233-a: Motor part 233-b: Guide member 240: Drain section 241: First valve 242: Second valve 243: Third valve 300: Control unit 310: Liquid selection module 320: Injection control module 330: Direction control module 340: Communication module 350: GPS module 360: Time Management Module 400: Power Department 500: Pump unit 510: Compressed air supply unit 511: Compressed air valve 520: Pump N10: Nozzle P11: First pipe P12: Second pipe P13: Third pipe D10: 1st angle D20: 2nd angle

Claims

Claim 1 A liquid spraying system for reducing environmental hazardous elements and improving the working environment comprises: an environmental sensing sensor unit that detects at least one environmental data among weather conditions, air pollution levels, and dust dispersion amounts at a work site; a spraying unit that can be mounted on a moving means and selectively sprays different liquids; and a control unit that controls the spraying unit based on environmental data obtained from the environmental sensing sensor unit, wherein the spraying unit comprises: a tank unit composed of a first tank and a second tank for storing different liquids; and a spray head equipped with a plurality of nozzles capable of height adjustment, horizontal rotation, and vertical angle adjustment, wherein the control unit comprises: a liquid selection module that determines the type of liquid to be sprayed from the first tank or the second tank by combining and analyzing fine dust concentration, temperature, and humidity among the environmental data; a spraying control module that adjusts the number of operating nozzles in stages and variably controls the spray amount according to the fine dust concentration and wind speed among the environmental data; and a direction control module that adjusts the rotation direction and spray angle of the spray head based on wind direction information among the environmental data. Claim 2 A liquid injection system according to claim 1, wherein the injection unit comprises: a modular frame capable of being coupled and separated from the moving means; and a drain unit that discharges residual liquid in the piping and nozzle according to preset conditions. Claim 3 A liquid spraying system for reducing environmental hazardous elements and improving the working environment comprises: an environmental sensing sensor unit that detects at least one environmental data among weather conditions, air pollution levels, and dust dispersion amounts at a work site; a spraying unit that can be mounted on a moving means and selectively sprays different liquids; and a control unit that controls the spraying unit based on environmental data obtained from the environmental sensing sensor unit, wherein the spraying unit comprises: a modular frame capable of being coupled to and separated from the moving means; a tank unit composed of a first tank and a second tank for storing different liquids; and a spraying head equipped with a plurality of nozzles and capable of height adjustment, horizontal rotation, and vertical angle adjustment, wherein the modular frame comprises a plurality of outriggers that are rotatably installed on the side of the modular frame, rotated to be perpendicular to the modular frame in a horizontal state, and then unfold in a vertical direction. Claim 4 A liquid injection system according to claim 1 or 3, wherein the injection head comprises a lift unit for height adjustment, and the lift unit comprises: a first arm fixedly installed on a frame; a second arm rotatably coupled to the first arm around a horizontal axis; and an injection head support arm rotatably coupled to the tip of the second arm; wherein the second arm is driven by a hydraulic cylinder, and the injection head support arm moves up and down as the first angle between the first arm and the second angle between the injection head support arm and the first arm are changed. Claim 5 A liquid injection system according to claim 1 or 3, wherein the injection head comprises: a head housing having a hollow structure in which a plurality of nozzles are installed along the inner circumferential surface of one end of the injection head; and a blower unit installed inside the head housing and blowing air in the direction of the plurality of nozzles; wherein the blower unit comprises a guide member for rectifying the blowing flow inside the head housing. Claim 6 A liquid injection system according to paragraph 2, wherein the above-mentioned preset conditions are at least one of detection of an ambient temperature threshold or lower, exceeding a preset non-use time, and a liquid replacement time, and wherein the above-mentioned drain section opens a drain valve according to the above-mentioned preset conditions and supplies compressed air within the piping and nozzle to forcibly discharge residual liquid. Claim 7 A liquid injection system according to claim 1, wherein the control unit further comprises a communication module that stores the environment data and injection history and transmits and receives remote monitoring signals. Claim 8 A liquid injection system according to claim 1, wherein the liquid selection module calculates a first environmental index using a multivariable function with fine dust concentration, temperature, humidity, and wind speed as input variables, selects water in the first tank when the first environmental index is within a first range, the temperature is above a first temperature, and the humidity is below a first humidity, and corrects the injection amount by a first multiplier when the wind speed is above a first wind speed, and selects a surface hardener in the second tank when the wind speed is below a second wind speed in a dry state where the first environmental index is within a second range, the dust dispersion amount is above a first dispersion amount, and the humidity is below a second humidity, and generates a correction signal to increase the surface hardener concentration by a first ratio when the temperature is above a second temperature, and transmits the calculation result of the multivariable function and the correction signal to the injection control module. Claim 9 In claim 1, the injection control module comprises: a first mode for calculating a second environmental index by adding fine dust concentration, wind speed, temperature, and dust dispersion amount, and controlling a first number of nozzles to be injected at a first injection pressure when the second environmental index is below a first threshold value, the wind speed is below a third wind speed, and the temperature is below a third temperature; and a second mode for controlling a second number of nozzles to be injected when the second environmental index is above the first threshold value and below the second threshold value, or when the wind speed is above the third wind speed and below the fourth wind speed, wherein the injection pressure is variably adjusted from the first injection pressure to the second injection pressure in proportion to the increase in wind speed. A liquid injection system characterized by controlling the injection to be sprayed through a third number of nozzles when the second environmental index exceeds the second threshold value or the wind speed exceeds the fourth wind speed, wherein the injection pressure is fixed at the third pressure and the injection time is extended by a second multiplier compared to the first mode, and transmitting information regarding the calculated second environmental index and the selected mode to the direction control module. Claim 10 A liquid injection system according to claim 7, wherein the control unit further comprises: a GPS module for acquiring current location information; and a time management module for managing work time; wherein the control unit automatically initiates injection when it is determined that the current location acquired by the GPS module has entered a specific pre-registered work area, automatically terminates injection when it is determined that the pre-set work schedule of the time management module is completed or that the current location has left the specific work area, and records and stores work path from the GPS module, work time from the time management module, injection history, and equipment status data.

Images