KR102785488B1 - Efficient spraying method of saline solution used to prevent freezing on road surfaces - Google Patents

Abstract

The present invention relates to an efficient method for spraying a salt solution used to prevent freezing of a road surface, the method comprising the steps of: installing a road surface detection unit on a road surface in an area where snowfall or freezing occurs to detect temperature, dryness, thickness of a water film, and slip information of a road drawing; installing an ice detection unit adjacent to the road surface detection unit installed on the road surface to detect a freezing point of the road surface; installing a camera unit on a road corresponding to the road surface on which a salt solution spraying head sprays the salt solution to photograph the condition of the road; and installing a climate detection unit on a road corresponding to the road surface on which the salt solution spraying head sprays the salt solution to detect the climate condition of the road. A step of collecting, by a server unit connected to a control unit, the temperature, dryness, thickness of a water film, slip information of the road surface detected by the road surface detection unit that has gone through the detection step, the freezing point information of the road surface detected by the ice detection unit, the climate condition information of the road detected by the climate detection unit, and the road condition information captured by the camera unit; a step of analyzing and calculating, by the server unit, the detection information of the road surface detection unit that has gone through the collection step, the detection information of the ice detection unit, and the detection information of the climate detection unit; a step of setting, by the server unit, the temperature based on the temperature deviation between the temperature of the road surface detected by the road surface detection unit and the freezing point of the road surface detected by the ice detection unit, and setting a standard for the degree of the climate condition of the road detected by the climate detection unit; And if the temperature of the road surface that has gone through the above setting step and the difference in freezing point temperature of the road surface are the set reference temperature or the climate condition of the road and the photographed condition of the road are at the set reference level, 20 to 40% of the salt solution is sprayed on the road surface, which is the salt spraying section, based on the concept of advance or initial response, and if the temperature of the road surface and the difference in freezing point temperature of the road surface are higher than the set reference temperature or the climate condition of the road and the photographed condition of the road are higher than the set reference level, 60 to 80% of the salt solution is additionally sprayed based on the concept of freezing, snowfall, and climate deterioration, and if the freezing, snowfall, and climate deterioration continue after the additional spraying of 60 to 80% of the salt solution, it is determined that the salt solution should be additionally sprayed, and 30 to 70% of the salt solution is additionally sprayed, and if the temperature of the road surface and the difference in freezing point temperature of the road surface are lower than the set reference temperature or the climate condition of the road and the photographed condition of the road are at the set reference level or the climate condition of the road and the photographed condition of the road are at the set reference level, The present invention relates to a method for removing ice (black ice/dark ice/freezing) or snow on a road surface such as a roadway or bridge, by including a step for determining whether to spray the salt solution if the condition is below a set standard, and the method can efficiently minimize the amount of salt solution to be sprayed in an appropriate amount according to the condition (degree) of the ice or snow on the road surface. The method can also have the effect of contributing significantly to the prevention of environmental pollution by minimizing the amount of salt solution to be sprayed.

Description

{EFFICIENT SPRAYING METHOD OF SALINE SOLUTION USED TO PREVENT FREEZING ON ROAD SURFACES}

The present invention relates to an efficient method for spraying a salt solution used to prevent freezing of a road surface, and more specifically, to an efficient method for spraying a salt solution used to prevent freezing of a road surface, which can minimize the amount of salt solution sprayed to an appropriate amount or efficiently according to the condition (degree) of freezing or snowfall on the road surface, and which can contribute to the prevention of environmental pollution by minimizing the amount of salt solution sprayed.

In general, among traffic accidents that occur on the road, the rate of slipping accidents due to road ice in winter is high, and the frequency of accidents is high in areas with frequent ice formation, such as steep, curved roads, overpasses, bridge sections, and tunnel entrances and exits.

The number of casualties and massive property damage caused by major and minor traffic accidents due to road ice in winter is increasing every year, and although the initial work is very important for snow removal due to heavy snowfall, if rapid access to the site is not possible for various reasons such as late-night or commuting hours slippery accidents, the snow removal work is delayed, which significantly increases the risk of severe traffic congestion and traffic accidents.

The effect of snowmelt on light snow resolves over time, but fundamental measures for snow accumulation and freezing on paved roads during the transitional period of snowmelt and during rapid drops in nighttime low temperatures due to snowfall have not been established in most cases.

The easiest way to prevent this is to use snow removal vehicles to spray calcium chloride, a widely used de-icing agent. However, the corrosion damage to road facilities and various negative impacts on the environment are constantly pointed out as serious problems by environmental groups and road officials. In particular, research results have been reported that the shortened lifespan of road facilities, vehicle corrosion damage, and roadside tree necrosis and environmental pollution caused by calcium chloride spraying are common, and the welded areas of overpasses and bridges, which are steel structures, corrode 20 to 40 times faster.

Therefore, in addition to early response to snow accumulation on steep slopes of paved roads, overpasses, bridges, tunnel entrances and exits, ramp sections for interchanges, airport aprons and runways, etc. that are vulnerable to snow and ice in winter, an eco-friendly snow removal method is urgently needed to prevent the threat to life caused by confusing traffic accidents for drivers driving on winter roads and the enormous economic loss that increases every year.

In addition, there is the problem of unnecessary cost waste due to excessive spraying rather than spraying the appropriate amount of brine by estimating and analyzing the degree of snowfall or freezing on the road surface, and there is also the problem of environmental pollution caused by excessive spraying of brine.

Related prior art includes Patent Publication No. 10-1280361 (Title of the invention: System and method for predicting road ice and detecting snowfall, Registration date: June 25, 2013) and Patent Publication No. 10-2270025 (Title of the invention: Automatic recognition type salt spray integrated system, Registration date: June 22, 2021).

The present invention has been created to solve the problems of the prior art as described above, and aims at an efficient method for spraying a brine used to prevent freezing of a road surface, which can efficiently minimize the amount of brine sprayed according to the condition (degree) of freezing or snowfall on the road surface by spraying an appropriate amount of brine used to remove ice (black ice/snow ice/freezing) or snowfall on the road surface such as a roadway or bridge, and which can contribute to the prevention of environmental pollution by minimizing the amount of brine sprayed.

Other objects of the present invention can be understood through the characteristics of the present invention, can be more clearly known through the embodiments of the present invention, and can be realized by the means and combinations shown in the claims.

In order to achieve the above-described problem to be solved by the present invention, the present invention has the following technical features.

An efficient method for spraying a brine solution to prevent freezing of a road surface according to the present invention comprises the steps of: a road surface detection unit installed on a road surface in an area where snowfall or freezing occurs to detect temperature, dryness, thickness of a water film, and slip information of a road drawing; an ice detection unit installed adjacent to the road surface detection unit installed on the road surface to detect a freezing point of the road surface; a camera unit installed on a road corresponding to the road surface on which a brine spraying head sprays the brine solution to photograph the condition of the road; and a climate detection unit installed on the road corresponding to the road surface on which the brine spraying head sprays the brine solution to detect the climate condition of the road; A step of collecting, by a server unit connected to a control unit, the temperature, dryness, thickness of a water film, slip information of the road surface detected by the road surface detection unit that has gone through the detection step, the freezing point information of the road surface detected by the ice detection unit, the climate condition information of the road detected by the climate detection unit, and the road condition information captured by the camera unit; a step of analyzing and calculating, by the server unit, the detection information of the road surface detection unit that has gone through the collection step, the detection information of the ice detection unit, and the detection information of the climate detection unit; a step of setting, by the server unit, the temperature based on the temperature deviation between the temperature of the road surface detected by the road surface detection unit and the freezing point of the road surface detected by the ice detection unit, and setting a standard for the degree of the climate condition of the road detected by the climate detection unit; And if the temperature of the road surface that has gone through the above setting step and the difference in freezing point temperature of the road surface are the set reference temperature or the climate condition of the road and the photographed condition of the road are at the set reference level, 20 to 40% of the salt solution is sprayed on the road surface, which is the salt spraying section, based on the concept of advance or initial response, and if the temperature of the road surface and the difference in freezing point temperature of the road surface are higher than the set reference temperature or the climate condition of the road and the photographed condition of the road are higher than the set reference level, 60 to 80% of the salt solution is additionally sprayed based on the concept of freezing, snowfall, and climate deterioration, and if the freezing, snowfall, and climate deterioration continue after the additional spraying of 60 to 80% of the salt solution, it is determined that the salt solution should be additionally sprayed, and 30 to 70% of the salt solution is additionally sprayed, and if the temperature of the road surface and the difference in freezing point temperature of the road surface are lower than the set reference temperature or the climate condition of the road and the photographed condition of the road are at the set reference level or the climate condition of the road and the photographed condition of the road are at the set reference level, It is performed including a step of determining whether to spray the brine solution by determining that the condition of the road is safe (good) if the condition is below a set standard.

In an efficient method of spraying brine used to prevent freezing of a road surface according to the present invention, a plurality of salt spraying heads are provided on the road surface, which receive salt water from a brine tank storing salt water to be sprayed on the road surface in an area where snowfall or freezing occurs, and spray the salt water on the road surface, which is a salt water spraying section, and the plurality of salt spraying heads can spray simultaneously or individually.

In the efficient method of spraying a brine solution used to prevent freezing of a road surface according to the present invention, the server unit can reach a set location near a road in an area where snowfall or freezing occurs and transmit a warning message in real time to a navigation system installed in a vehicle in motion, a portable terminal carried by a driver of the vehicle, or an electronic display board installed on the road.

In an efficient method for spraying a brine solution used to prevent freezing of a road surface according to the present invention, the brine to be sprayed on the road surface is supplied from a brine tank storing the brine, and a plurality of brine spraying heads are provided on the road surface as a section for spraying the brine, and the road surface detection unit is installed adjacent to the brine spraying head to measure the amount of salt on the road surface after spraying, transmit information on the road surface condition to the control unit, and notify (transmit) failure information to a manager managing the road.

In the efficient method for spraying brine used to prevent freezing of a road surface according to the present invention, when the difference between the temperature of the road surface and the freezing point temperature of the road surface is equal to or higher than a set reference temperature or when the climate condition of the road and the condition of the road are equal to or higher than a set reference level, the server unit determines that it is the concept of freezing, snowfall, or climate deterioration and that the brine should be additionally sprayed, or when it determines that the freezing, snowfall, or climate deterioration continues after the additional spraying of the brine and that the brine should be additionally sprayed, and the server unit notifies the manager in charge of the road so that snow removal work can also be performed.

In the efficient method of spraying brine used to prevent freezing of a road surface according to the present invention, the method further includes: an LED sign unit that is connectable to the control unit and is installed at least once on a curbstone or shoulder of the road surface where the road surface detection unit is installed; wherein the LED sign unit changes and outputs different colors according to a first safety stage, a second caution stage, and a third warning stage according to a value set by the server unit.

In an efficient method of spraying a brine solution used to prevent freezing of a road surface according to the present invention, an LED light source unit is provided in the brine spraying head that sprays the brine solution on the road surface, and the LED light source unit irradiates light generated using supplied electric energy onto the road surface to enable a driver driving on the road surface to identify whether there is a danger.

The present invention, through a means for solving the above-mentioned problem, can effectively minimize the amount of salt solution sprayed according to the state (degree) of the ice or snowfall on the road surface by spraying an appropriate amount of salt solution used to remove ice (black ice/dark ice/freezing) or snowfall on the road surface such as a roadway or bridge, and can excellently contribute to the prevention of environmental pollution by minimizing the amount of salt solution sprayed.

Other effects of the present invention can be understood through the characteristics of the present invention, can be more clearly known through the embodiments of the present invention, and can be exerted by the means and combinations shown in the claims.

Figure 1 is a flow chart of one embodiment of an effective method for spraying brine used to prevent freezing of a road surface according to the present invention.
Fig. 2 is a drawing showing a road anti-icing system according to Fig. 1.
Figure 3 is a drawing showing an LED indicator unit connected to a control unit or server unit according to Figure 2.
Fig. 4 is a perspective view showing a state in which an LED light source is provided in a salt spray head according to Fig. 2.
Figure 5 is a drawing showing a state in which a salt spray head and a road surface detection unit according to Figure 2 are connected to a control unit.
Figure 6 is a flow chart showing the flow (sequence) of a salt spraying equipment program for an efficient method of spraying salt water used to prevent freezing of a road surface according to the present invention.

The detailed description of the present invention set forth below refers to the accompanying drawings which illustrate, by way of example, specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention, while different from each other, are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention with respect to one embodiment. It should also be understood that the positions or arrangements of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be limiting, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings designate the same or similar functions throughout.

FIG. 1 is a flow chart of one embodiment of a method for efficiently spraying a brine solution used to prevent freezing of a road surface according to the present invention, FIG. 2 is a drawing showing a road ice prevention system according to FIG. 1, FIG. 3 is a drawing showing an LED sign part connected to a control part or a server part according to FIG. 2, FIG. 4 is a perspective view showing a state in which an LED light source part is provided in a salt spraying head according to FIG. 2, and FIG. 5 is a drawing showing a state in which a salt spraying head and a road surface detection part according to FIG. 2 are connected to a control part.

The efficient method (S100) of spraying a brine solution used to prevent freezing of a road surface according to the present invention comprises, as illustrated in FIGS. 1 to 5, a road surface detection unit installed on a road surface in an area where snowfall or freezing occurs to detect temperature, dryness, thickness of a water film, and slip information of a road drawing, an ice detection unit installed adjacent to the road surface detection unit installed on the road surface to detect a freezing point of the road surface, a camera unit installed on a road corresponding to the road surface on which a brine spraying head sprays the brine solution to photograph the condition of the road, and a climate detection unit installed on the road corresponding to the road surface on which the brine spraying head sprays the brine solution to detect the climate condition of the road (S110); A step (S120) of collecting, by a server unit connected to a control unit, the temperature, dryness, thickness of a water film, slip information of the road surface detected by the road surface detection unit that has gone through the detection step (S110), freezing point information of the road surface detected by the ice detection unit, climate condition information of the road detected by the climate detection unit, and the road condition information captured by the camera unit; A step (S130) of analyzing and calculating, by the server unit, the detection information of the road surface detection unit that has gone through the collection step (S120), the detection information of the ice detection unit, and the detection information of the climate detection unit; A step (S130) of the server unit that has gone through the analysis and calculation step (S130) of setting the temperature based on the temperature deviation criterion of the temperature of the road surface detected by the road surface detection unit and the freezing point of the road surface detected by the ice detection unit, and setting the degree criterion of the climate condition of the road detected by the climate detection unit; And if the temperature of the road surface and the freezing point temperature deviation of the road surface that have gone through the setting step (S140) are the set reference temperature or the climate condition of the road and the photographed condition of the road are at the set reference level, it is judged as a concept of advance or initial response, and 20 to 40% of the salt solution is sprayed on the road surface, which is the salt solution spraying section, and if the temperature of the road surface and the freezing point temperature deviation of the road surface are higher than the set reference temperature or the climate condition of the road and the photographed condition of the road are higher than the set reference level, it is judged as a concept of freezing, snowfall, and climate deterioration, and 60 to 80% of the salt solution is additionally sprayed, and if the freezing, snowfall, and climate deterioration continue after the additional spraying of 60 to 80% of the salt solution, it is judged that the salt solution should be additionally sprayed, and 30 to 70% of the salt solution is additionally sprayed, and if the temperature of the road surface and the freezing point temperature deviation of the road surface are lower than the set reference temperature or the climate condition of the road It comprises a step (S150) of determining whether to spray the brine solution by determining that the condition of the road is safe (good) if the condition and the photographed condition of the road are below the set standard.

The detection step (S110) is a step in which a road surface detection unit (140) is installed on a road surface (R) in an area where snowfall or freezing occurs to detect the temperature, dryness, thickness of a water film, and slip information of the road surface (R), an ice detection unit (150) is installed adjacent to the road surface detection unit (140) installed on the road surface (R) to detect the freezing point of the road surface (R), a camera unit (170) is installed on a road corresponding to the road surface (R) on which the salt water spraying head (SW5) sprays salt water to photograph the condition of the road, and a climate detection unit (160) is installed on a road corresponding to the road surface (R) on which the salt water spraying head (SW5) sprays salt water to detect the climate condition of the road.

The road surface detection unit (140) is installed on the road surface (R) to detect the temperature, dryness, thickness of the water film, and slip information of the road surface (R), and transmits the detected temperature, dryness, thickness of the water film, and slip information of the road surface (R).

Specifically, the road surface detection unit (140) is installed on the road surface (R) to detect the temperature, dryness, thickness of the water film, and slip information of the road surface (R), and transmits the detected temperature, dryness, thickness of the water film, and slip information of the road surface (R) to the control unit (180) described below.

Table 1 above shows the specifications of the road surface detection unit.

The road surface detection unit (140) is installed adjacent to the salt spraying head (SW5) to measure the amount of salt on the road surface after spraying and transmit information on the road surface condition to the control unit (180).

Since a means for detecting the amount of salt water sprayed or whether the salt water sprayed head (SW5) is malfunctioning or not is provided in the road surface detection unit (140) without the need for a separate means for detecting the amount of salt water sprayed (amount of salt water/amount of salt) or malfunction information of the salt water sprayed head (SW5), the time and cost required for installing the road can be saved.

The salt spraying head (SW5) installed on the road surface (R) is structured to be exposed to the outside, so it is inevitable that the spraying amount or breakdown will occur due to repeated strong impacts applied from the outside, such as breakage.

The road surface detection unit (140) equipped with a means for detecting the amount of salt sprayed or information on failure of the salt spraying head (SW5) can accurately check abnormal conditions such as the amount of salt sprayed (amount of salt water/amount of salt) or information on failure of the salt spraying head (SW5), so that prompt aftercare such as repair or replacement can be performed, thereby providing sufficient expandability that is not restricted by the area in which it is installed.

At least one road surface detection unit (140) is installed on the road surface, and each road surface detection unit (140) is installed on the road while having a unique code.

Since the road surface detection unit (140) has a unique code, an abnormal state, i.e. a broken road surface detection unit (140), can be checked in real time by the server unit (190), allowing for a quick response.

Table 2 above shows the road surface conditions and freezing point status (when the brine facility is not in operation).

Table 3 above shows the road surface condition and freezing point analysis (when the brine facility is in operation).

Table 4 above shows the road surface conditions and freezing point status (when the brine facility is not in operation).

Table 5 above shows the road surface condition and freezing point analysis (when the brine facility is in operation).

The ice detection unit (150) is installed adjacent to the road surface detection unit (140) installed on the road surface (R) to detect the ice point of the road surface (R) and transmit the detected ice point information of the road surface (R) to the control unit (180).

Specifically, the ice detection unit (150) is installed on the road surface (R) to detect the freezing point of the road surface (R) in real time and transmit the detected freezing point information of the road surface (R) to the control unit (180). The freezing point is the temperature at which water begins to freeze, and is 0°C under 1 atm.

The ice detection unit (150) directly detects ice where water begins to freeze on the road surface (R), detects the amount of snow removal material to be sprayed, can predict the freezing point in advance, and also has an alarm function for ice.

By enabling rapid response through advance prediction of the freezing point and an alarm for freezing by the ice detection unit (150), vehicle accidents and casualties can be minimized.

Table 6 above shows the specifications of the ice detection unit.

The ice detection unit (150) can be connected to the control unit (180), but the ice detection unit (150) can be connected to the control unit (180) through a signal of a frequency band, and the signal of the frequency band is set in advance in the server unit (190), and the normal state and abnormal state (failure) of the ice detection unit (150) can be checked according to the frequency band set in advance.

The ice detection unit (150) is installed on the road surface and has a unique code.

The ice detection unit (150) has its own unique code, so that the server unit (190) can check in real time whether the ice detection unit is in an abnormal state, that is, is broken, and respond to it quickly.

The climate detection unit (160) is installed on the road, but is installed on the road corresponding to the road surface (R) on which the salt spray head (SW5) sprays salt water, detects the climate condition of the road, and transmits the detected climate condition information of the road.

Specifically, the climate detection unit (160) is installed outside the road surface (R) rather than on the road surface (R) where the road detection unit (140) is installed, and detects the road environment and the road climate conditions, such as temperature, relative humidity, dew point, rainfall, visibility, and air pressure.

Table 7 above shows the specifications of the climate sensor.

Table 8 above is the technical data of the climate sensor unit.

The camera unit (170) is installed on the road corresponding to the road surface (R) on which the salt spraying head (SW5) sprays salt water, photographs the road condition, and transmits information on the condition of the photographed road.

Specifically, the camera unit (170) is installed outside the road surface (R) rather than on the road surface (R) where the road surface detection unit (140) is installed, like the climate detection unit (160).

The collection step (S120) is a step in which the server unit (190) connected to the control unit (180) receives the temperature, dryness, thickness of the water film, slip information of the road surface (R) detected by the road surface detection unit (140) that has gone through the detection step (S110), information on the freezing point of the road surface (R) detected by the ice detection unit (150), information on the climate condition of the road detected by the climate detection unit (160), and information on the condition of the road captured by the camera unit (170).

The control unit (180) can be connected to each of the brine tank (SW1), the brine supply pump (SW2), the road surface detection unit (140), the ice detection unit (150), the climate detection unit (160), and the camera unit (170), and controls the operation of the brine tank (SW1) and the salt water supply pump (SW2), and receives information detected by the road surface detection unit (140), information detected by the ice detection unit (150), information detected by the climate detection unit (160), and information captured by the camera unit (170).

Specifically, the control unit (180) can be electrically connected to the brine tank (SW1), the brine supply pump (SW2), the road surface detection unit (140), the ice detection unit (150), the climate detection unit (160), and the camera unit (170), respectively, and can control the operation of the power supply to the brine tank (SW1) and the brine supply pump (SW2) or the amount of power (amount of current) and the time of power supply according to a signal applied from the server unit (190) described below, and receives the status information of the road surface (R) transmitted from the road surface detection unit (140), the freezing point information of the road surface (R) transmitted from the ice detection unit (150), the climate status information of the road transmitted from the climate detection unit (160), and the status information of the road captured by the camera unit (170).

This is to prepare for unexpected problems occurring in the control unit (180) that controls the brine tank (SW1), brine supply pump (SW2), road surface detection unit (140), ice detection unit (150), and climate detection unit (160), and allows a manager who remotely monitors from the server unit (190) through the image information of the camera unit (170) to quickly respond to the on-site situation.

The control unit (180) compares the road condition information of the road surface detection unit (140) and the freezing point information of the ice detection unit (150) before snowfall or freezing occurs, and the climate condition information of the climate detection unit (160) and the road condition information of the camera unit (170) to spray the salt water from the salt water spraying head (SW5) by supplying power to the salt water tank (SW1) and the salt water supply pump (SW2) to melt and remove black ice.

The control unit (180) controls the amount of power supplied to the brine tank (SW1) and the brine supply pump (SW2) and the time to melt and remove black ice that occurs on the road surface (R) at the source with the brine that is sprayed. However, in some cases, if the black ice cannot be removed at the source, the color output from the LED sign unit (M) installed on the curb or shoulder or the LED light source unit (L) equipped on the brine spray head (SW5) described below allows a driver driving on the road surface (R) where black ice remains to check and respond accordingly.

The method of supplying (applying) power to the brine tank (SW1) and the brine supply pump (SW2) that sprays brine on the road is to supply power through the control unit (180) or, in some cases, through the server unit (190). That is, a manager monitoring the on-site situation in real time in the server unit (190) can judge the on-site situation and apply a control signal to the control unit (180) to selectively supply power to the brine tank (SW1) and the brine supply pump (SW2).

The control unit (180) is capable of detecting the amount of spraying or malfunction of the salt spraying head (SW5) based on information transmitted from the road surface detection unit (140) or the ice detection unit (150). When the amount of spraying or malfunction of the salt spraying head (SW5) occurs, the control unit (180) quickly cuts off the power to the salt tank (SW1) and the salt supply pump (SW2) and simultaneously transmits the information about the amount of spraying or malfunction of the salt spraying head (SW5) to the server unit (190), so that the manager located in the server unit (190) can quickly respond by manually cutting off the power to the salt tank (SW1) and the salt supply pump (SW2).

The present invention is exemplified by a manager in the server unit (190) cutting off the power to the brine tank (SW1) and the brine supply pump (SW2) depending on the amount of spraying or malfunction of the brine spraying head (SW5). However, if power is supplied to a source other than the brine tank (SW1) and the brine supply pump (SW2), the power can also be cut off.

The analysis and output step (S130) is a step in which the server unit (190) analyzes and outputs the detection information of the road surface detection unit (140), the detection information of the ice detection unit (150), and the detection information of the climate detection unit (160) that have passed through the collection step (S120).

The control unit (180) melts and removes black ice by spraying salt water from the salt water spraying head (SW5) by supplying power to the salt water tank (SW1) and salt water supply pump (SW2) through the road condition information of the road surface detection unit (140), the climate condition information of the climate detection unit (160), and the road condition information of the camera unit (170) before snowfall or freezing occurs.

The setting step (S140) is a step in which the server unit (190) that has gone through the analysis and calculation step (S130) sets the temperature based on the temperature deviation between the temperature of the road surface (R) detected by the road surface detection unit (140) and the freezing point of the road surface (R) detected by the ice detection unit (150), and sets the degree standard of the climate condition of the road detected by the climate detection unit (160).

In the judgment step (S150), if the temperature of the road surface (R) that has gone through the setting step (S140) and the freezing point temperature difference of the road surface (R) are equal to the set reference temperature or the climate condition of the road and the photographed condition of the road are equal to the set reference level, it is judged as a pre- or initial response concept to spray 20~40% of the brine solution on the road surface (R), which is the brine spraying section, and if the temperature of the road surface (R) and the freezing point temperature difference of the road surface (R) are higher than the set reference temperature or the climate condition of the road and the photographed condition of the road are higher than the set reference level, it is judged as a concept of freezing, snowfall, or climate deterioration, so 60~80% of the brine solution is additionally sprayed, and if freezing, snowfall, or climate deterioration continues after the additional spraying of 60~80% of the brine solution, it is judged that additional brine solution should be sprayed, so 30~70% of the brine solution is additionally sprayed, and if the temperature of the road surface (R) and the freezing point of the road surface (R) are equal to or higher than the set reference temperature or the climate condition of the road and the photographed condition of the road are equal to or higher than the set reference level, it is judged as a concept of freezing, snowfall, or climate deterioration, so 60~80% of the brine solution is additionally sprayed. This is the stage where the spraying decision is made to determine whether to spray brine if the temperature deviation is below the set standard temperature or if the road's climate condition and the photographed condition of the road are below the set standard, and the road condition is judged to be safe (good).

Before explaining the judgment step (S150), the configuration for spraying the saline solution is explained as follows.

The brine tank (SW1) stores brine to be sprayed on road surfaces (R) in areas where snow or ice occurs.

The brine tank (SW1) is a means of storing brine, also known as snow melting solution, to be sprayed on road surfaces (R) in areas where snow or ice occurs.

The brine tank (SW1) can be made of metal or synthetic resin, can have various shapes, and has a capacity of several thousand liters (ℓ) to tens of thousands of liters (ℓ) depending on the road surface (R) that is the spraying section.

The brine supply pump (SW2) has a brine input terminal for inputting brine and a brine output terminal for outputting brine, and the brine input terminal is connected to the brine tank (SW1) to send out brine stored in the brine tank (SW1) at high pressure, and is automatically or manually driven by electric energy.

The brine supply pump (SW2) is a means used to transfer brine solution to the supply, and is a high-pressure pump used to transfer brine solution at high pressure.

The brine supply pipe (SW3) is connected to the brine output terminal of the brine supply pump (SW2) and is installed across the spraying section to transport the brine solution supplied from the brine supply pump (SW2).

Specifically, the brine supply pipe (SW3) is a pipe for supplying brine, is connected to the brine output terminal of the brine supply pump (SW2), and is installed across the brine fountain section to transport brine supplied at high pressure from the brine supply pump (SW2).

The brine supply pipe (SW3) may be made of metal or synthetic resin material, like the brine tank (SW1).

The brine branch line (SW4) branches into multiple branches from the brine supply pipe (SW3) and supplies the brine solution inside the brine supply pipe (SW3).

The brine branch line (SW4) receives brine as a means to allow brine supplied through the brine supply pipe (SW3) to be branched into multiple lines and fed into the brine spray head (SW5) described below.

The brine spraying head (SW5), which is connected to each of a number of brine branch lines (SW4), can spray simultaneously or individually.

The brine spraying head (SW5) is connected to each of a number of brine branch lines (SW4) and sprays brine supplied from the brine branch lines (SW4) onto the road surface (R), which is the spraying section.

The brine spraying head (SW5) is connected to the end of each of a number of brine branch lines (SW4) and sprays brine input at high pressure from the brine branch lines (SW4) onto the road surface (R) through the spraying nozzle.

The brine spraying heads (SW5) are installed in multiple locations at intervals ranging from a few meters (m) to 20 meters (m) to evenly spray brine onto the road surface (R) corresponding to the spraying section.

The discharge pressure measuring unit (110) is connected to the brine supply pipe (SW3) adjacent to the brine output terminal of the brine supply pump (SW2) to monitor the discharge pressure of the brine output terminal of the brine supply pump (SW2) in real time and transmits the discharge pressure value measured through the real-time monitoring.

The discharge pressure measuring unit (110) can be a variety of water pressure sensors that measure water pressure.

The upper pressure measuring unit (120) is installed adjacent to the brine spraying head (SW5) coupled to the upper end of the brine supply pipe (SW3), and monitors in real time the supply pressure of brine supplied to the brine spraying head (SW5) coupled to the upper end of the brine supply pipe (SW3), and transmits the supply pressure value measured through real time monitoring.

The upper pressure measuring unit (120) is a pipe branched from the brine supply pipe (SW3) adjacent to the brine output terminal of the brine supply pump (SW2) to measure the pressure of the upper portion of the brine supply pipe (SW3) installed over the entire spraying section. The pipe branched from the brine supply pipe (SW3) adjacent to the brine output means of the brine supply pump (SW2).

The lower pressure measuring unit (130) is installed adjacent to the brine spraying head (SW5) coupled to the lower end of the brine supply pipe (SW3), and monitors in real time the supply pressure of brine supplied to the brine spraying head (SW5) coupled to the lower end of the brine supply pipe (SW3), and transmits the supply pressure value measured through real-time monitoring.

The lower pressure measuring unit (130) branches off from the lower part of the brine supply pipe (SW3) to measure the pressure of the lower part of the brine supply pipe (SW3) installed throughout the entire spraying section.

The server unit (190) can be connected to the control unit (180), and can analyze and calculate the detection information of the road surface detection unit (140), the detection information of the ice detection unit (150), and the detection information of the climate detection unit (160) transmitted by the control unit (180), respectively, and sets the temperature based on the information analyzed and calculated from the temperature difference between the road surface (R) temperature detected by the road surface detection unit (140) and the freezing point of the road surface detected by the ice detection unit (150), and sets the climate condition of the road detected by the climate detection unit (160) based on the information analyzed and calculated above.

If the temperature difference between the road surface (R) temperature and the freezing point of the road surface (R) is the set reference temperature or the road climate condition and the road condition are at the set reference level, 20-40% of the salt solution is sprayed based on the concept of pre- or initial response.

If the temperature difference between the road surface (R) temperature and the freezing point of the road surface (R) exceeds the set standard temperature or the road climate condition and the road condition exceed the set standard, it is judged to be freezing, snowfall, or climate deterioration, and 60-80% of the brine solution is additionally sprayed.

After spraying an additional 60-80% brine, if freezing, snowfall, or worsening weather persists, spray an additional 30-70% brine.

If the freezing point of the road surface (R) and the temperature difference of the road surface (R) are lower than or equal to the set reference temperature, or if the climate condition of the road and the condition of the road are lower than or equal to the set reference temperature, the control unit (180) is controlled not to spray the brine solution by determining that the condition of the road is safe (good).

Specifically, the server unit (190) is electrically connected to the control unit (180), and controls the control unit (180) by analyzing and calculating the road condition (temperature) information detected by the road surface detection unit (140), the freezing point information of the road surface (R) detected by the ice detection unit (150), and the climate condition information of the road detected by the climate detection unit (160) through a program that compares and analyzes the freezing point information and the road condition information and calculates the information.

The server unit (190) analyzes and calculates the road condition detection information of the road condition detection unit (140), the freezing point detection information of the ice detection unit (150), and the road climate condition information of the climate detection unit (160) transmitted from the control unit (180), so that the manager located in the server unit (190) can understand the road (road surface) condition and the road climate condition of the corresponding area.

The server section (190) is a control center where the administrator is located. The administrator can check in real time using a monitor provided in the control center or can check in real time from outside the control center using a portable terminal such as a cell phone.

An administrator located in the server unit (190) can remotely monitor the situation in an area where snowfall or freezing occurs, and remotely control the power supply of the salt water tank (SW1), salt water supply pump (SW2), including the salt water spraying head (SW5) that sprays salt water on the road surface, and can also remotely control the road surface detection unit (140), ice detection unit (150), weather detection unit (160), and camera unit (170).

The server unit (190) can be configured to transmit a real-time warning message to a navigation device installed in a vehicle in operation, a portable terminal carried by a driver of the vehicle, or an electronic display board installed on the road when it reaches a set location near a road in an area where snowfall or freezing occurs.

In the present invention, the server unit (190) is exemplified as analyzing and calculating road condition detection information of the road condition detection unit (140), freezing point detection information of the ice detection unit (150), and road climate condition information of the climate detection unit (160). However, in some cases, the control unit (180) may perform the analysis and calculation, and transmit the analyzed and calculated information to the server unit (190).

In the past, snowfall or ice formation on the road surface (R) in the area was predicted based on weather forecast information from the Korea Meteorological Administration, but there were frequent cases where snowfall or ice formation on the road surface (R) in the area did not occur.

Accordingly, based solely on the weather forecast information from the Korea Meteorological Administration, salt water was sprayed on the road surface (R) in the area to prevent snowfall or freezing, but for some reason, no snowfall or freezing occurred on the road surface (R) in the area, resulting in the unnecessary spraying of salt water, which is harmful.

Accordingly, the present invention compares, analyzes and calculates road condition detection information of a road surface detection unit (140), freezing point detection information of an ice detection unit (150), and road climate condition information of a climate detection unit (160) to prevent excessive spraying of salt water when spraying salt water for the onset of black ice (freezing/black ice) and the thickness of black ice, and thereby reduces environmental pollution.

The server unit (190) controls the control unit (180) and transmits the analyzed and calculated information to the manager who manages the roads in the area where snowfall or freezing occurs.

The server unit (190) determines that additional salt solution should be sprayed when the temperature difference between the road surface (R) temperature and the freezing point of the road surface (R) exceeds the set reference temperature or the road climate condition and the road condition exceed the set reference level, and when freezing, snowfall, or climate deterioration persists after additional salt solution spraying and additional salt solution is sprayed, it notifies the manager so that snow removal work can be performed at the same time.

By simultaneously spraying additional brine and performing snow removal work, less brine can be sprayed, effectively reducing the amount of brine sprayed, while also protecting the environment more effectively.

The server unit (190) determines that the temperature of the road surface (R) of the road surface detection unit (140) and the temperature difference between the freezing point of the road surface (R) of the ice detection unit (150) are equal to the set reference temperature or that the climate condition of the road of the climate detection unit (160) is equal to the set reference level, and sprays 20 to 40% of the salt solution (information on the preliminary stage, automatic valve opening/closing time of 3 seconds). If the temperature of the road surface (R) and the temperature difference between the freezing point of the road surface (R) are equal to or higher than the set reference temperature or that the climate condition of the road and the road condition are equal to or higher than the set reference level, and sprays an additional 60 to 80% of the salt solution (information on the freezing stage, automatic valve opening/closing time of 7 seconds). If freezing, snowfall, or climate deterioration continues after additionally spraying 60 to 80% of the salt solution, an additional 30 to 70% of the salt solution is sprayed. When spraying (contents regarding the continuous stage), if the freezing point of the road surface (R) and the temperature difference of the road surface (R) are below the set standard temperature or the climate condition of the road and the condition of the road are below the set standard, the control unit (180) is controlled not to spray the brine solution by determining that the condition of the road is safe (good) (contents regarding the safety stage).

In the contents of the continuation stage, 1. If the road surface (R) condition continues to be in the preliminary stage, spray an additional 20-40% of the salt solution, 2. If the road surface (R) condition continues to be slippery in the preliminary stage, spray an additional 40-60% of the salt solution, and 3. If the road surface (R) condition continues to be slippery in the preliminary stage and snowfall continues, spray an additional 60-80% of the salt solution.

The server unit (190) stores the change in condition of the road surface (R) as data after spraying brine on the road surface (R) in the preliminary stage, sets an alarm, and automatically or manually updates it in real time.

The LED sign unit (M) can be connected to the control unit (180), and is installed at least once on the road surface (R) where the road surface detection unit (140) is installed, and is output (irradiated) in different colors according to the first safety stage, second caution stage, and third warning stage, depending on the value set in the server unit (190).

Specifically, the LED sign (M) is one of the safety indicators installed on the road in the shape of a strip, and is installed on the center line of the road, lane boundaries, safety zones of branched roads, crosswalks, and speed prevention sections to promote safe driving and to ensure drivers' visibility (visibility) of the lane when driving at night, thereby promoting safe driving.

Drivers driving on the road are able to identify the sign through the light source emitted from the LED sign (M) during the day, but it is difficult for drivers to identify the sign at night, especially when it snows.

In areas where snow or ice occurs, black ice should be melted and removed using salt water sprayed on road surfaces. However, in case black ice cannot be removed due to unforeseen reasons such as weather, an LED sign (M), which is one of the safety indicators installed on the road, is used.

The LED sign (M) is electrically connected to the control unit (180) so that a color is output on the road surface (R) where snow or ice remains due to the control of the control unit (180) or a color is output on the road surface (R) where snow or ice remains due to the remote control of the manager located in the server unit (190) so that a driver driving on the road can check it and take action to prevent accidents such as slipping.

The LED sign (M) outputs a light source that is green when in the first safety stage, orange when in the second caution stage, and red when in the third warning stage, like a traffic light, depending on the value set in the server unit (190), allowing the driver to identify it.

The LED indicator (M) is not configured to stay on (ON), but to turn on (ON) when a vehicle is driving and reaches a certain distance from the LED indicator (M), and to turn off (OFF) when the vehicle leaves the certain distance.

This not only reduces unnecessary electricity consumption from the LED sign (M), but also extends its lifespan.

The present invention is exemplified by spraying salt water on snowfall or ice that occurs on the road surface, but in some cases, it may be possible to spray fresh water (water) instead of salt water on fallen leaves that accumulate on the road surface.

As shown in Fig. 6, this is a flow chart showing the flow (sequence) of a salt spraying facility program for an efficient method of spraying salt water used to prevent freezing of a road surface.

Wind speed compensation compensates for faster freezing speeds when wind speeds are high, and provides a range of deviations according to the importance of each stage.

The preliminary stage (Stage 1) control sprays (injects) when any one of the three conditions is met, and if the "freezing stage (Stage 2)" condition is met within 60 minutes from the initial spraying time, Stage 2 spraying is performed, and the "preliminary stage (Stage 1)" restarts after 60 minutes from the initial spraying time.

The freezing stage (Stage 2) control sprays (injects) when either one of the two conditions is met, and if the "sustained stage (Stage 3)" condition is met within 30 minutes from the initial spraying time, Stage 3 spraying is performed, and after 30 minutes from the initial spraying time, the "freezing stage (Stage 2)" or "preliminary stage (Stage 1)" is restarted.

The continuous stage (stage 3) control sprays (injects) when either one of the two conditions is satisfied, and if the "continuous stage (stage 3)" condition is not lifted within 20 minutes from the initial spraying time, stage 3 spraying is performed at 10-minute intervals, and the "freezing stage (stage 2)" restarts after 20 minutes from the initial spraying time.

Q=Deviation setting temperature(℃)=Road temperature(℃)-Freezing point temperature(℃)=2.0℃(Example temperature)

Q1: Preliminary stage deviation setting temperature (℃)

Q2: Freezing stage deviation setting temperature (℃)

Q3: Continuous step deviation setting temperature (℃)

Q₁: Preliminary stage deviation setting wind speed compensation temperature (℃)

Q2: Freezing stage deviation setting wind speed correction temperature (℃)

Q₃: Continuous step deviation setting wind speed compensation temperature (℃)

AT: Air Temperature

RT: Road Temperature

FT: Freezing Temperature

DP: Dew Point

Although the present invention has been described above based on preferred embodiments, the technical idea of the present invention is not limited thereto, and it will be apparent to a person skilled in the art to which the present invention pertains that modifications or changes may be made within the scope described in the claims, and such modifications or changes shall fall within the scope of the appended claims.

S100: Effective method of spraying salt solution to prevent freezing of road surfaces
S110: Detection stage
S120: Collection stage
S130: Analysis and Output Stage
S140: Setting stage
S150: Judgment stage
110: Discharge pressure measurement unit
120: Top pressure measuring section
130: Lower pressure measurement unit
140: Road detection unit
150: Ice detection unit
160: Climate Sensing Unit
170 : Camera section
180 : Control Unit
190 : Server section
SW1: Brine tank
SW2: Brine supply pump
SW3: Salt water supply pipe
SW4: Salt water branch line
SW5: Salt spray head
L: LED light source
M: LED sign
R: Road surface

Claims (7)

A step for detecting the temperature, dryness, thickness of a water film, and slip information of a road surface by installing a road surface detection unit on the road surface in an area where snowfall or freezing occurs, detecting the temperature, dryness, thickness of a water film, and slip information of the road surface by installing an ice detection unit adjacent to the road surface detection unit installed on the road surface to detect the freezing point of the road surface, installing a camera unit on the road corresponding to the road surface on which the salt water spraying head sprays the salt water to photograph the condition of the road, and installing a climate detection unit on the road corresponding to the road surface on which the salt water spraying head sprays the salt water to detect the climate condition of the road;
A step of collecting, by a server unit connected to a control unit, the temperature, dryness, thickness of a water film, and slip information of the road surface detected by the road surface detection unit that has gone through the detection step, the freezing point information of the road surface detected by the ice detection unit, the climate condition information of the road detected by the climate detection unit, and the road condition information captured by the camera unit;
A step of analyzing and calculating, in the server unit, the detection information of the road surface detection unit, the detection information of the ice detection unit, and the detection information of the climate detection unit that have gone through the collection step;
The server unit, which has gone through the above analysis and calculation steps, sets the temperature based on the temperature difference between the temperature of the road surface detected by the road surface detection unit and the freezing point of the road surface detected by the ice detection unit, and sets the degree standard of the climate condition of the road detected by the climate detection unit; and
Including a step of determining whether to spray 20 to 40% of the salt solution on the road surface, which is a salt solution spraying section, if the temperature of the road surface and the difference in the freezing point temperature of the road surface that have gone through the above-mentioned setting step are equal to the set reference temperature or the climate condition of the road and the photographed state are equal to the set reference level, and if the temperature of the road surface and the difference in the freezing point temperature of the road surface are equal to or higher than the set reference temperature and the temperature of the road surface and the difference in the freezing point temperature of the road surface are equal to or lower than the set reference temperature or the climate condition of the road and the photographed state of the road are equal to or lower than the set reference level, the state of the road is determined to be safe (good) and the salt solution is not sprayed;
A plurality of salt spraying heads are installed on the road surface, which is a salt spraying section, and supply salt water from a salt water tank storing salt water to be sprayed on the road surface in an area where snowfall or freezing occurs, and the salt water spraying heads installed in a plurality can spray simultaneously or individually.
The above road surface detection unit is installed adjacent to the salt spraying head to measure the amount of salt on the road surface after spraying or detect a failure of the salt spraying head, and transmits the measured amount of salt of the salt spraying head or the detected failure information of the salt spraying head to the control unit and reports the failure information to the manager managing the road.
The above server unit determines that the temperature of the road surface and the freezing point temperature difference of the road surface are higher than the set reference temperature or that the climate condition of the road and the condition of the road are higher than the set reference level, and additionally sprays the brine solution if it is determined that freezing, snowfall, or climate deterioration exists after the additional spraying of the brine solution and that additional spraying of the brine solution is necessary, and then notifies the manager in charge of the road so that snow removal work can be performed at the same time.
It further includes an LED sign unit that can be connected to the above control unit and is installed at least once on the curbstone or shoulder of the road surface where the road surface detection unit is installed; and the LED sign unit outputs different colors according to the first safety stage, the second caution stage, and the third warning stage according to the value set by the server unit.
The above server unit can reach a set location near a road in an area where snowfall or freezing occurs and transmit a real-time warning message to a navigation system installed in a vehicle in motion, a portable terminal carried by a driver of the vehicle, or an electronic display board installed on the road.
An efficient method for spraying brine used to prevent freezing of a road surface, characterized in that an LED light source is provided on the brine spraying head that sprays the brine on the road surface, and the LED light source irradiates light generated using supplied electric energy onto the road surface to enable a driver driving on the road surface to identify whether there is a danger. delete delete delete delete delete delete

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