KR102733430B1 - A road freezing prevention system that can efficiently control the amount of saline solution sprayed to prevent freezing on the road surface - Google Patents

Abstract

The present invention relates to a road anti-icing system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface, the system comprising: a salt solution tank storing salt solution to be sprayed on a road surface in an area where snowfall or freezing occurs; a salt solution supply pump having a salt solution input terminal into which the salt solution is input and a salt solution output terminal from which the salt solution is output, the salt solution input terminal being connected to the salt solution tank to send out the salt solution stored in the salt solution tank at high pressure, and being driven automatically or manually by electric energy; a salt solution supply pipe connected to the salt solution output terminal of the salt solution supply pump and installed over a spraying section to transport the salt solution supplied from the salt solution supply pump; a salt solution branch line branching from the salt solution supply pipe into a plurality of branches to supply the salt solution inside the salt solution supply pipe; a salt solution spraying head connected to each of the plurality of salt solution branch lines to spray the salt solution supplied from the salt solution branch lines on the road surface in the spraying section; A discharge pressure measuring unit coupled to the brine supply pipe adjacent to the brine output terminal of the brine supply pump, which monitors in real time the discharge pressure of the brine output terminal of the brine supply pump, and transmits the discharge pressure value measured in real time by monitoring; An upper pressure measuring unit provided adjacent to the brine spraying head coupled to the upper end of the brine supply pipe, which monitors in real time the supply pressure of the brine supplied to the brine spraying head coupled to the upper end of the brine supply pipe, and transmits the measured supply pressure value by monitoring in real time; A lower pressure measuring unit provided adjacent to the brine spraying head coupled to the lower end of the brine supply pipe, which monitors in real time the supply pressure of the brine supplied to the brine spraying head coupled to the lower end of the brine supply pipe, and transmits the measured supply pressure value by monitoring in real time; A road surface detection unit installed on the road surface to detect temperature, dryness, thickness of a water film, and slip information of the road surface, and transmit the detected temperature, dryness, thickness of a water film, and slip information of the road surface; 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, and transmit the detected freezing point information of the road surface; a climate detection unit installed on the road corresponding to the road surface sprayed by the salt water spraying head to detect a climate condition of the road, and transmit the detected climate condition information of the road; a camera unit installed on the road corresponding to the road surface sprayed by the salt water spraying head to photograph the condition of the road, and transmit the photographed road condition information; A control unit which is respectively connected to the brine tank, the brine supply pump, the road surface detection unit, the ice detection unit, the climate detection unit, and the camera unit, and controls the operation of the brine tank and the brine supply pump, and receives information detected by the road surface detection unit, information detected by the ice detection unit, information detected by the climate detection unit, and information captured by the camera unit; And the control unit can be connected, and the control unit can transmit 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 received, and the temperature of the road surface detected by the road surface detection unit and the temperature deviation of the freezing point of the road surface detected by the ice detection unit are analyzed and calculated to set the temperature, and the climate condition of the road detected by the climate detection unit is set to the analyzed and calculated information, and if the temperature of the road surface and the temperature deviation of the freezing point of the road surface are the set reference temperature or the climate condition of the road and the condition of the road are 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, and if the temperature of the road surface and the temperature deviation of the freezing point of the road surface are higher than the set reference temperature or the climate condition of the road and the 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 the salt solution is The technical feature of the present invention comprises a server unit for controlling the control unit not to spray the brine solution by determining that the condition of the road is safe (good) if the freezing, snowfall, or worsening climate continues after spraying an additional 60 to 80%, and if the freezing point of the road surface and the temperature difference of the road surface are below a set reference temperature or the climate condition of the road and the condition of the road are below a set reference level; The 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 efficiently minimizing the amount of brine solution to be sprayed in an appropriate amount depending on the condition (degree) of the freezing or snowfall on the road surface, and by minimizing the amount of brine solution sprayed, it is possible to make an excellent contribution to the prevention of environmental pollution.

Description

{A ROAD FREEZING PREVENTION SYSTEM THAT CAN EFFICIENTLY CONTROL THE AMOUNT OF SALINE SOLUTION SPRAYED TO PREVENT FREEZING ON THE ROAD SURFACE}

The present invention relates to a road anti-icing system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface, and more specifically, to a road anti-icing system capable of efficiently minimizing or appropriately spraying the amount of salt solution used to remove ice (black ice/dark ice/freezing) or snow that occurs on a road surface such as a roadway or bridge, depending on the state (degree) of the ice or snowfall on the road surface, and capable of contributing to the prevention of environmental pollution by minimizing the amount of salt solution sprayed, to prevent freezing of a road surface.

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 icing, 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 slippery accidents late at night or during rush hour, the snow removal work is delayed, which significantly increases the risk of severe traffic congestion and traffic accidents.

Although the snowmelt effect of light snow resolves over time, fundamental measures for snow accumulation and freezing on paved roads during the transitional period of snowmelt and during rapid drops in nighttime minimum temperatures 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 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 a road de-icing prevention system capable of efficiently minimizing the amount of salt solution sprayed according to the condition (degree) of the road surface freezing or snowfall by spraying an appropriate amount of salt solution used to remove ice (black ice/snow ice/freezing) or snowfall on the road surface such as a roadway or bridge, and efficiently controlling the amount of salt solution sprayed to prevent freezing on the road surface, thereby contributing to the prevention of environmental pollution by minimizing the amount of salt solution 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.

The road anti-icing system according to the present invention, which can efficiently control the amount of brine sprayed to prevent freezing of a road surface, comprises: a brine tank storing brine to be sprayed on a road surface in an area where snowfall or freezing occurs; a brine supply pump having a brine input terminal into which the brine input terminal is input and a brine output terminal from which the brine output terminal is output, and the brine input terminal is connected to the brine tank to send out the brine stored in the brine tank at a high pressure, and which is automatically or manually driven by electric energy; a brine supply pipe connected to the brine output terminal of the brine supply pump and installed over a spraying section to transport the brine supplied from the brine supply pump; a brine branch line branching from the brine supply pipe into a plurality of branches and supplying the brine inside the brine supply pipe; a brine spraying head which is respectively connected to a plurality of the brine branch lines and sprays the brine supplied from the brine branch lines on the road surface in the spraying section; A discharge pressure measuring unit coupled to the brine supply pipe adjacent to the brine output terminal of the brine supply pump, which monitors in real time the discharge pressure of the brine output terminal of the brine supply pump, and transmits the discharge pressure value measured in real time by monitoring; An upper pressure measuring unit provided adjacent to the brine spraying head coupled to the upper end of the brine supply pipe, which monitors in real time the supply pressure of the brine supplied to the brine spraying head coupled to the upper end of the brine supply pipe, and transmits the measured supply pressure value by monitoring in real time; A lower pressure measuring unit provided adjacent to the brine spraying head coupled to the lower end of the brine supply pipe, which monitors in real time the supply pressure of the brine supplied to the brine spraying head coupled to the lower end of the brine supply pipe, and transmits the measured supply pressure value by monitoring in real time; A road surface detection unit installed on the road surface to detect temperature, dryness, thickness of a water film, and slip information of the road surface, and transmit the detected temperature, dryness, thickness of a water film, and slip information of the road surface; 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, and transmit the detected freezing point information of the road surface; a climate detection unit installed on the road corresponding to the road surface sprayed by the salt water spraying head to detect a climate condition of the road, and transmit the detected climate condition information of the road; a camera unit installed on the road corresponding to the road surface sprayed by the salt water spraying head to photograph the condition of the road, and transmit the photographed road condition information; A control unit which is respectively connected to the brine tank, the brine supply pump, the road surface detection unit, the ice detection unit, the climate detection unit, and the camera unit, and controls the operation of the brine tank and the brine supply pump, and receives information detected by the road surface detection unit, information detected by the ice detection unit, information detected by the climate detection unit, and information captured by the camera unit; And the control unit can be connected, and the control unit can transmit 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 received, and the temperature of the road surface detected by the road surface detection unit and the temperature deviation of the freezing point of the road surface detected by the ice detection unit are analyzed and calculated to set the temperature, and the climate condition of the road detected by the climate detection unit is set to the analyzed and calculated information, and if the temperature of the road surface and the temperature deviation of the freezing point of the road surface are the set reference temperature or the climate condition of the road and the condition of the road are 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, and if the temperature of the road surface and the temperature deviation of the freezing point of the road surface are higher than the set reference temperature or the climate condition of the road and the 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 the salt solution is After spraying an additional 60 to 80%, if the freezing, snowfall, or worsening weather persists, an additional 30 to 70% of the brine solution is sprayed, and if the difference between the freezing point of the road surface and the temperature of the road surface is below a set reference temperature or the climate condition of the road and the condition of the road are below a set reference level, the server unit controls the control unit to determine that the condition of the road is safe (good) and not to spray the brine solution;

In a road de-icing prevention system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface according to the present invention, the salt solution spraying heads respectively connected to a plurality of salt solution branch lines can spray simultaneously or individually.

In a road de-icing prevention system capable of efficiently controlling the amount of brine sprayed to prevent freezing of a road surface according to the present invention, the server unit can 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 when it reaches a set location near a road in an area where snowfall or freezing occurs.

In a road anti-icing system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface according to the present invention, either the road surface detection unit or the ice detection unit is installed adjacent to the salt solution 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 a manager of failure information.

In a road anti-icing system capable of efficiently controlling the amount of brine sprayed to prevent freezing of a road surface according to the present invention, the server unit determines that the salt solution is to be additionally sprayed 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 due to the concepts of freezing, snowfall, and worsening climate, and when the salt solution is to be additionally sprayed because the freezing, snowfall, or worsening climate continues after the salt solution is additionally sprayed, and notifies a manager so that snow removal work can also be performed.

In a road de-icing prevention system capable of efficiently controlling the amount of brine sprayed to prevent freezing of a road surface according to the present invention, the system further includes an LED sign unit that is connectable to the control unit and is installed at least once on a curb or shoulder of the road surface; wherein the LED sign unit outputs different colors according to a first safety stage, a second caution stage, and a third warning stage, respectively, according to a value set by the server unit.

In a road de-icing prevention system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface according to the present invention, an LED light source unit is provided in the salt solution spraying head that sprays the salt 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 drawing showing an accident case caused by snow or ice accumulated on the road surface.
Figure 2 is a drawing of one embodiment of a road anti-icing system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface according to the present invention.
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 (order) of a salt spraying facility program according to a road de-icing prevention system capable of efficiently controlling the amount of salt spray to prevent freezing of a road surface.

The detailed description of the invention set forth below refers to the accompanying drawings which illustrate, by way of example, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the invention, while different from one another, 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 invention. Furthermore, it should 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 invention. Accordingly, the detailed description set forth below is not intended to be limiting, and the scope of the 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. 2 is a drawing of one embodiment of a road de-icing prevention system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface according to the present invention, FIG. 3 is a drawing showing an LED sign unit connected to a control unit or a server unit according to FIG. 2, FIG. 4 is a perspective view showing a state in which an LED light source unit is provided in a salt solution spraying head according to FIG. 2, and FIG. 5 is a drawing showing a state in which a salt solution spraying head and a road surface detection unit according to FIG. 2 are connected to a control unit.

A road anti-icing system (100) capable of efficiently controlling the amount of brine sprayed to prevent freezing of a road surface according to the present invention comprises, as illustrated in FIGS. 2 to 5, a brine tank (SW1), a brine supply pump (SW2), a brine supply pipe (SW3), a brine branch line (SW4), a brine spraying head (SW5), a discharge pressure measuring unit (110), an upper pressure measuring unit (120), a lower pressure measuring unit (130), a road surface detection unit (140), an ice detection unit (150), a climate detection unit (160), a camera unit (170), a control unit (180), and a server unit (190).

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 as wide as 20 meters (m) to evenly spray brine onto the road surface (R) corresponding to the spraying section.

An LED light source (L) is provided in a salt spray head (SW5) that sprays salt water on a road surface (R), and the LED light source (L) irradiates (outputs) light generated using supplied electric energy onto the road surface (R).

The salt spraying head (SW5) is equipped with an LED light source (L), which is capable of rotating around the center of the salt spraying head (SW5), so that the light is output (changed to a different color in stages according to the road conditions being sprayed by the salt spraying head (SW5) and is then directed to the road.

In areas where snow or ice occurs, black ice must be melted and removed by spraying salt water on road surfaces. However, in case black ice cannot be removed due to unexpected reasons such as weather, an LED light source (L) is used in the salt water spraying head (SW5) that shines light on the road surface (R) to make it easier for drivers to identify hazards.

The LED light source (L) equipped on the salt spray head (SW5) is output (irradiated) onto the road in different colors according to the first safety stage, second caution stage, and third warning stage, as set by the server unit (190), as in the LED indicator (L) described below.

Drivers driving on the road are easily identified with their eyes during the day, but are difficult to identify with their eyes at night, so they are identified through the light source output from the LED light source (L) of the salt spray head (SW5).

The LED light source (L) of the salt spray head (SW5) outputs green light when the light source is in the first safety stage, orange light when the light source is in the second caution stage, and red light when the light source is in the third warning stage, just like a traffic light that changes color according to the value set in the server unit (190), so that the driver can identify it.

The LED light source (L) of the salt spray head (SW5) is not configured to remain on (ON), but to turn on (ON) when a vehicle in motion reaches a certain distance from the road surface detection unit (140), and to turn off (OFF) when the vehicle leaves the certain distance.

This not only reduces unnecessary electricity from the LED light source (L) of the salt spray head (SW5), but also extends its lifespan.

In the present invention, the LED light source unit (L) is exemplified as being installed in the salt spray head (SW5), but in some cases, the LED light source unit (L) may be installed in the road surface detection unit (140).

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 upper pressure measuring unit (120) is 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 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) together with the ice detection unit (150) described below to detect the temperature of the road surface (R) and transmit the detected temperature information of the road surface (R) to the control unit (180).

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

The road surface detection unit (140) is connected to the salt spraying head (SW5) to detect the spraying amount or failure of the salt spraying head (SW5) and transmit information on the spraying amount or failure of the salt spraying head (SW5) to the control unit (180) or server unit (190).

Since a means for detecting the amount of salt spraying head (SW5) or whether there is a malfunction is provided in the road surface detection unit (140) without the need for a separate means for detecting the amount of salt spraying head (SW5) or information on malfunction, 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 spraying or failure information of the salt spraying head (SW5) can accurately check abnormal conditions such as the amount of spraying or failure information 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 installation area.

In the present invention, the road surface detection unit (140) that detects the amount of spraying or failure information of the salt spraying head (SW5) is connected to the salt spraying head (SW5) together with the ice detection unit (150) so that the amount of spraying or failure information of the salt spraying head (SW5) can be detected first, thereby enabling a more rapid response.

The road surface detection unit (140) can be connected to the control unit (180), but the road surface detection unit (140) 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 road surface detection unit (140) can be checked according to the frequency band set in advance.

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 has an alarm function for ice formation. The ice detection unit (150) can predict the freezing point in advance and provide an alarm for ice formation, allowing for quick response, thereby minimizing vehicle accidents and casualties.

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.

A plurality of ice detection units (150) are installed on the road surface, and each ice detection unit (150) is installed on the road while having its own 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) sprayed by the salt spray head (SW5), 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) sprayed by the salt spraying head (SW5) to photograph the road condition and transmit the photographed road condition information.

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 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 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 on 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 server unit (190) can be connected to the control unit (180), and the control unit (180) 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, respectively, and the temperature of the road surface (R) detected by the road surface detection unit (140) and the temperature deviation of the freezing point of the road surface (R) detected by the ice detection unit (150) are set as the information analyzed and calculated, and the climate condition of the road detected by the climate detection unit (160) is set as the information analyzed and calculated, and if the temperature of the road surface (R) and the temperature deviation of the freezing point of the road surface (R) are the set reference temperature or the climate condition of the road and the road condition are the set reference level, 20 to 40% of the salt solution is sprayed by judging in advance or as an initial response concept, and if the temperature of the road surface (R) and the freezing point of the road surface (R) are the set reference temperature, If the temperature deviation is higher than the set reference temperature or the climate condition of the road and the road condition are higher than the set reference level, it is determined that freezing, snowfall, and climate deterioration exist, and an additional 60 to 80% of the brine solution is sprayed. If freezing, snowfall, and climate deterioration persist after the additional spraying of 60 to 80% of the brine solution, an additional 30 to 70% of the brine solution is sprayed. If the temperature deviation between the freezing point of the road surface (R) and the temperature of the road surface (R) is lower than the set reference temperature, or the temperature deviation between the freezing point of the road surface (R) and the temperature of the road surface (R) is lower than the set reference temperature, or the climate condition of the road and the road condition are lower than the set reference level, it is determined that the road condition is safe (good), and the control unit (180) is controlled not to spray the brine solution.

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 surface detection unit (140), the freezing point detection information of the ice detection unit (150), the road climate condition information of the climate detection unit (160), and the road condition information of the camera unit (170) 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 brine tank (SW1), the brine supply pump (SW2), including the brine spraying head (SW5) that sprays brine on the road surface, and can also remotely control the road surface detection unit (140), the ice detection unit (150), the weather detection unit (160), and the 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), road climate condition information of the climate detection unit (160), and road condition information of the camera unit (170). 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 additional salt solution is sprayed because freezing, snowfall, or climate deterioration continues 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 the set reference temperature or that the climate condition of the road of the climate detection unit (160) and the road condition of the camera unit (170) are 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), and determines that the temperature of the road surface (R) and the temperature difference between the freezing point of the road surface (R) are higher than the set reference temperature or that the climate condition of the road and the road condition are 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), and if freezing, snowfall or climate deterioration continues after the additional spraying of 60 to 80% of the salt solution, An additional 30 to 70% brine solution is sprayed (contents regarding the continuous stage), and if the difference between the freezing point of the road surface (R) and the temperature of the road surface is lower than or equal to the set reference temperature, or if the difference between the temperature of the road surface (R) and the freezing point of the road surface (R) is 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 level, the control unit (180) is controlled not to spray the brine solution by determining that the road condition 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 for the first safety stage, orange for the second caution stage, and red for the third warning stage, like a traffic light, depending on the value set in the server unit (190), allowing the driver to identify the light.

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 Figure 6, this is a flow chart showing the flow (order) of a salt spraying facility program according to a road de-icing prevention system capable of efficiently controlling the amount of salt spray 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.

100: Road de-icing prevention system that can efficiently control the amount of salt solution sprayed to prevent freezing on road surfaces
110: Discharge pressure measurement unit
120: Top pressure measuring section
130: Lower pressure measurement section
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 brine tank that stores brine to be sprayed on road surfaces in areas where snow or ice occurs;
A brine supply pump having a brine input terminal into which the brine solution is input and a brine output terminal from which the brine solution is output, the brine input terminal is connected to the brine tank to supply the brine solution stored in the brine tank at a high pressure, and is automatically or manually driven by electric energy;
A brine supply pipe connected to the brine output terminal of the brine supply pump and installed across the spraying section to transport the brine solution supplied from the brine supply pump;
A brine branch line branching from the above brine supply pipe into a plurality of lines to supply brine solution inside the above brine supply pipe;
A salt spraying head that is connected to each of the plurality of salt water branch lines and sprays the salt water supplied from the salt water branch lines onto the road surface, which is the spraying section;
A discharge pressure measuring unit coupled to the brine supply pipe adjacent to the brine output terminal of the brine supply pump to monitor the discharge pressure of the brine output terminal of the brine supply pump in real time and transmit the discharge pressure value measured through the real-time monitoring;
An upper pressure measuring unit installed adjacent to the brine spray head coupled to the upper end of the brine supply pipe, and monitoring in real time the supply pressure of the brine supplied to the brine spray head coupled to the upper end of the brine supply pipe, and transmitting the supply pressure value measured through the monitoring in real time;
A bottom pressure measuring unit installed adjacent to the brine spray head coupled to the lower end of the brine supply pipe, and monitoring in real time the supply pressure of the brine supplied to the brine spray head coupled to the lower end of the brine supply pipe, and transmitting the supply pressure value measured through real-time monitoring;
A road surface detection unit installed on the road surface to detect the temperature, dryness, thickness of the water film, and slip information of the road surface, and transmit the detected temperature, dryness, thickness of the water film, and slip information of the road surface;
An ice detection unit installed adjacent to the road surface detection unit installed on the road surface to detect the freezing point of the road surface and transmit information on the detected freezing point of the road surface;
A climate detection unit installed on the road, corresponding to the road surface sprayed by the salt spray head, detects the climate condition of the road and transmits the detected climate condition information of the road;
A camera unit installed on the road corresponding to the road surface sprayed by the salt spray head, which photographs the condition of the road and transmits the photographed condition information of the road;
A control unit which is respectively connected to the brine tank, the brine supply pump, the road surface detection unit, the ice detection unit, the climate detection unit, and the camera unit, and controls the operation of the brine tank and the operation of the brine supply pump, and receives information detected by the road surface detection unit, information detected by the ice detection unit, information detected by the climate detection unit, and information captured by the camera unit; and
The control unit can be connected, and the control unit can transmit 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 received, and the temperature is set based on the information analyzed and calculated from the temperature of the road surface detected by the road surface detection unit and the temperature deviation of the freezing point of the road surface detected by the ice detection unit, and the climate condition of the road detected by the climate detection unit is set based on the analyzed and calculated information, and if the temperature of the road surface and the temperature deviation of the freezing point of the road surface are the set reference temperature or the climate condition of the road and the 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, and if the temperature of the road surface and the temperature deviation of the freezing point of the road surface are higher than the set reference temperature or the climate condition of the road and the 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 the salt solution is After additional spraying of 60~80%, if the freezing, snowfall, or worsening weather persists, an additional spray of 30~70% of the brine is sprayed, and if the difference between the freezing point of the road surface and the temperature of the road surface is below the set standard temperature or the climate condition of the road and the condition of the road are below the set standard, the server unit controls the control unit so as not to spray the brine, judging that the condition of the road is safe (good).
The above brine spraying heads, each connected to a plurality of the above brine branch lines, can spray simultaneously or individually.
Either the above road surface detection unit or the above ice detection unit is installed adjacent to the salt 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 the manager of any failure information of the salt spraying head.
The above server unit determines that if the difference between the temperature of the road surface and the freezing point temperature of the road surface is higher than the set reference temperature or if the climate condition of the road and the condition of the road are higher than the set reference level, it is determined that it is due to freezing, snowfall, or climate deterioration, and if the freezing, snowfall, or climate deterioration continues after the additional spraying of the salt solution, it notifies the manager so that the snow removal work can be carried out 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; and the LED sign unit outputs in 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 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 when it reaches a set location near a road in an area where snowfall or freezing occurs.
A road anti-icing system capable of efficiently controlling the amount of salt solution sprayed to prevent freezing of a road surface, characterized in that an LED light source is provided on the salt solution spraying head that sprays the salt solution 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.
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