KR20220117356A - Road anti-skid system on black ice (snow, rain) - Google Patents

Abstract

The present invention relates to a road anti-skid system (RAS) on black ice (snow, rain). According to an embodiment of the present invention, in order to reduce the stopping distance of a vehicle in a poor road condition such as frozen road or road with snow or rain, the RAS evenly scatters brick powder on slippery roads to remove surrounding moisture, to be inserted into ice or snow on the roads when wheels pass by, to increase the stopping frictional force with rough surfaces, and recovers frictional force on the slippery roads up to a level of a normal road as if sand is scattered on slippery hills. In addition, the RAS registers the position of a road with slippery surfaces and transmits the information to a following vehicle, thereby inducing safe driving by reducing the speed of the vehicle. Here, the vehicle registered with a discharge of brick powder can help remove ice by scattering an environmentally-friendly ice removal solution. In addition, the sand and clay composing the brick powder are all nature-friendly materials, and are crushed by absorbing surrounding moisture, so that the sand and clay do not cause harmful environmental problems even afterwards, and the snow and water can be moved to the sides by the wind from the running vehicles, so that the slipperiness on the roads can be minimized.

Description

Road anti-skid system on black ice (snow, rain)}

The present invention is a road anti-skid system on black ice (RAS) on ice (snow, rain) to stop a car when it suddenly encounters a slippery road We study how to attach or change a certain device to the vehicle, but if we think on the contrary, if we make the slippery road into a non-slip road, the vehicle will stop safely without slipping.

As Dr. Taguchi of Japan, who advocated quality engineering, immediately identified the cause and effect through CEC: Cause-Effect Chain (CEC) analysis when a technical problem is raised, most of the problems when asked why (reason) in No. 6 is said to be the cause of As an example, if a causal relationship (facts and questions) analysis table is summarized as an analysis table, focusing on the case where the vehicle suddenly meets black ice on the highway and the vehicle slides on the road, it is shown in FIG.

Looking at the alternatives for the purpose of stopping the vehicle in Figure 1, first, a next-generation brake system is currently being developed with the first plan, but there is no problem in holding the vehicle's posture, but there is a limit to shortening the stopping distance, so it is impossible to achieve the goal, and in the third eye, it is cold There is a way to install a heating wire on the road to overcome the problem, but it is a financial problem, and it is difficult to solve the problems 5 and 6 because it is a natural phenomenon. And it is impossible to solve the problem right away because there are problems in time and financial resources to build a road that does not contain water. So, we would like to think of the non-slip road as an alternative.

Of course, the problem raised can be solved by blocking only one part of the causal chain, but the most probable and least expensive part is selected and blocked in consideration of the possibility and financial issues. As a result, in the long term, it should be designed to build a road that does not create black ice because of water retention.

Therefore, as the subject of the invention also changed from vehicle to road, this means that the friction force of the road is restored to safely stop the vehicle. A similar case is to increase the friction force between the vehicle and the road by spraying calcium chloride or sand on a road or hill where there is a lot of traffic or slipping is expected in winter.

Recently, automobiles do not have any difficulties in running more than 100km due to continuous improvement of engine performance and improvement of vehicle parts suitable for high-speed driving. However, for vehicle safety, stopping the vehicle well is more important than running it. In general, it is said that the force required to stop a car is five times that of the running force. In other words, to stop a car, you need brakes that are five times stronger than the engine. Therefore, an efficient brake system remains a problem that has been continued since the era when automobiles were driven by tires.

The best alternative to this is ABS (Anti-lock Brake System). If you apply the brake too hard, the vehicle will slide off the ground rather than stop, and if you press the brake too lightly, the performance of the brake will decrease. Therefore, even if the driver presses the brake strongly, ABS repeatedly applies and releases the brake 8 to 30 times per second so that the vehicle does not slip and stops by increasing the braking force.

However, recently, next-generation brake systems that are safer than the above-mentioned anti-lock brake system (ABS) are being developed. For example, according to the Korean Intellectual Property Office, the main technologies applied for a patent as a next-generation brake system to replace ABS include ESC, EHB, EMB, and regenerative braking system. It is a technology that improves steering performance during curve driving by individually controlling the braking force of each wheel by detecting vehicle slippage in real time based on the detected data. (Electro Hydraulic Brake) refers to a hydraulic brake and is an improvement of the conventional hydraulic brake operated by the power of the engine. It is a method of braking by generating hydraulic pressure by an electric motor. EMB (Electro Mechanical Brake) is an electromechanical brake that is converted from a conventional hydraulic type to a mechanical type that does not require brake fluid. Because precise control is possible, it is being used in electric vehicles that are being developed recently. In addition, the regenerative braking system (Regenerative Brake System) is a technology introduced in conjunction with the development of hybrid vehicles. It converts the energy consumed during braking by the generator mounted on each wheel into electrical energy, stores it in the battery, and reuses the stored electrical energy. This system has been put into practical use and is showing great effects in improving fuel efficiency and the like.

However, even with these advanced brake systems, if the vehicle brake is suddenly applied on snowy or icy roads, the vehicle's posture is secured and the steering wheel can be manipulated. As it is, major accidents occur when drivers suddenly encounter snow or black ice, which is frozen ice on the road, in winter despite the use of the state-of-the-art brake system. According to the statistics of the Road Traffic Authority, as a result of analyzing the characteristics of traffic accidents in the winter season that occurred over the past 5 years ('09~', 13), there were 20,004 traffic accidents on snowy and icy roads, resulting in 499 deaths and 35,656 injuries. It was analyzed that the most traffic accidents occurred in the first month of winter (December) with 8,735 cases (43.7%).

Therefore, a road anti-skid system (RAS) is proposed as a method of stopping the vehicle like a general road even when driving a vehicle in winter when it encounters a poor road such as a snowy or icy road. In particular, many cutting-edge technologies are being developed in preparation for the 4th industrial revolution (self-driving cars, etc.), but commercialization of autonomous vehicles is almost impossible unless the problem of vehicle slippage in bad road conditions is solved.

The task to be solved is to solve the following three problems by stopping the vehicle without slipping in bad road conditions (ice, snowy, rain, etc.).

The first problem according to an embodiment is to remove snow or rainwater accumulated around the wheel by wind on poor roads such as snow and rain roads,

The second problem according to an embodiment is to develop a material with high frictional force, and spray it on the road to increase the frictional force of the road,

A third problem according to an embodiment is to obtain information on the sliding position online by linking with the next-generation brake system such as ABS, ESC, EHB, EMB, and regenerative braking system installed inside the vehicle.

In order to stop a vehicle in a short distance like a general road in bad road conditions such as black ice, heavy snow, and heavy rain, the vehicle is intended to achieve a goal by solving the problem by the following means.

When the vehicle slides due to heavy snow or heavy rain, a wind path is newly created from the front of the vehicle to the side of the wheel, and the driving wind removes snow or rainwater around the wheel.

In order to prevent the vehicle from slipping, a brick sphere having a disc-shaped acupressure needle shape as a nature-friendly anti-slip material and having a protruding portion on a rough surface is developed.

When the vehicle slides, a circuit breaker is opened to uniformly eject the brick spheres in the storage box, and an outlet device oriented toward the bottom of the wheel is manufactured at the end to prevent the brick spheres from being thrown out. In addition, vehicles registered as snow plows are sprayed with an eco-friendly snow plow.

In order to safely stop the vehicle, it is linked with the next-generation brake systems installed in the vehicle, and the emergency situation is transmitted to the vehicle following through one-to-one communication using a transceiver, etc. to prevent a secondary collision accident.

According to an embodiment, the wind blows out from the inside of the wheel in bad conditions of the road due to snow or rainwater to blow the surrounding water or snow to the side to prevent slipping on the snowy or rainy road.

According to an embodiment, a brick ball is quickly spread on the road through the anti-skid system (RAS) of the road, and the traction force of the road is increased by pressing with the weight of the wheel, thereby obtaining the effect of stopping the vehicle in reverse. In addition, a vehicle registered as a snow plow is sprayed with an eco-friendly snow plow to provide a snow removal effect to the following vehicle.

According to an embodiment, the vehicle is induced to decelerate through an alarm based on the received location information in order to maximize safety by linking with the next-generation brake systems installed in the vehicle and to have a secondary accident prevention effect.

1 is a causal relationship (CEC) analysis table based on the case of preventing vehicle slippage by suddenly meeting black ice on the road while driving according to an embodiment, and establishing possible alternatives.
2 shows a structural diagram of a road anti-skid system (RAS) according to an embodiment.
3 shows an overall flow diagram of a road anti-skid system (RAS) according to an embodiment.
4 shows the fabrication of a disc-shaped brick sphere having a protruding portion with a rough surface of the brick according to one embodiment.
5 shows a structural diagram of a wind exhaust device according to an embodiment.
Figure 6 shows a structural diagram of a brick ball discharge device according to an embodiment.

Reference is made to the accompanying drawings in order to explain the present invention in more detail in detail. The accompanying drawings represent an embodiment of the present invention, whereby the scope of the technical idea of the present invention is not reduced or changed, and various modified embodiments can be derived within the scope of the present invention.

First, according to an embodiment, FIG. 1 shows a possible alternative after determining the cause of the vehicle's slippage situation according to a causal relationship (CEC) analysis table by suddenly meeting black ice while driving, and FIG. 2 is the inventor's road according to an embodiment The location of the main device in the anti-skid system (RAS) of the vehicle is schematically shown on the chassis structure of the vehicle, and FIG. 3 describes the overall flow diagram of the anti-skid system (RAS) of the road according to an embodiment of the present invention as a main function, and , Figure 4 shows the production of a disc-shaped brick sphere with a rough surface of the brick according to an embodiment, Figure 5 illustrates the structure of the wind exhaust device and Figure 6 describes the structure of the brick sphere exhaust device.

1 is a diagram illustrating a root cause analysis according to a causal relationship (CEC) analysis focusing on a case where a vehicle meets black ice on a road and slides on a road according to an embodiment, and a road anti-skid system (RAS) in consideration of the possibility and required resources ) as an invention.

2 schematically illustrates a physical location of a main device based on a chassis structure of a vehicle in order to maximize an understanding of a road anti-skid system (RAS) according to an embodiment.

3 illustrates the overall flow of a road anti-skid system (RAS) in terms of a module concept, according to an embodiment, and describes the flow by dividing the braking function into icy road, snowy road, and rain road. For example, the braking part of an icy road recognizes black ice first, sprinkles brick balls on the road depending on whether it is recognized, and increases the static friction by the weight of the vehicle's wheels, so that the black ice on the road also has friction and stops the vehicle safely. In addition, if the vehicle encounters black ice and snow while driving, and slips, the vehicle registered as a snow plow sprays brick balls and sprays an eco-friendly snow plow instead of a public snow plow to provide a snow removal effect to the following vehicle. At this time, 9 main functions (111 to 151) are selected and described in detail as follows.

The first main function is the ice recognition module 111, which recognizes black ice by the difference in illuminance (or other recognition method) before the vehicle slides. make it work

The second main function is the module 113 for developing an eco-friendly material. Referring to FIG. 4, a brick sphere, which is a mixture of sand and clay, is selected as an eco-friendly and frictional material. The shape is a disc-shaped acupressure needle with a protruding part on the rough surface, and after heating only the surface at a certain temperature, a friction agent such as product eco-traction is placed in the center, and there is a desiccant in the storage box to keep the brick spheres dry.

The third main function is the module 115 that sprays brick spheres on the road, and when the vehicle slips on icy, snowy and rain roads, the ABS works and the anti-skid system (RAS) of the road is activated to discharge the brick spheres on the road. and press with the weight of the wheel to penetrate into the ice or snow of the road, thereby increasing the frictional force between the wheel and the road surface.

The fourth major function is the link module 117 with the next-generation brake system, and when a slip occurs in the vehicle, it is linked with the next-generation brake system installed in the vehicle to hold the vehicle's posture, prevent sideways sliding, and safely operate the steering wheel. control the car

The fifth main function is the road location transmission module 119, which transmits the location of the road on which the vehicle slides to the corporate broadcasting system and stores the location information (GPS, etc.) in the DB. It transmits location information (GPS, etc.) to induce the vehicle to decelerate when it reaches a certain distance. Meanwhile, after a certain period of time has elapsed or the highway patrol car and police car check the scene, the registered road slip location information can be deleted.

The sixth main possibility is to discharge brick spheres with the snowy departure module 131. Front-wheel drive vehicles are mainly installed around the front wheels of the vehicle, but rear-wheel drive vehicles have brick vents on both the front and rear wheels to prevent rear wheels from slipping when starting. do. At this time, when the vehicle starts in reverse, a brick sphere discharge function must be provided behind the wheel, but if the installation is complicated, a person may directly spray the brick sphere.

The seventh main function is the module 133 for manufacturing the wind exhaust device. Referring to FIG. 5 , first, the wind moves from the vehicle's radiator to the side of the driving wheels (front wheels, rear wheels, etc.), and then the wind moves from the inside of the wheel to the outside. Remove snow or rainwater around the wheels by blowing.

The eighth main function is a module 135 for manufacturing a brick sphere discharge device. Referring to FIG. 6 , the brick sphere is kept dry and ejected at a constant speed, and there is an exhaust port that bends toward the wheel at the end of the passage to prevent the brick sphere from being blown out In addition, the snow remover is sprayed on the wheel in a solution state to prevent the wheel from freezing along with the snow removal solution around the wheel to increase friction. On the other hand, according to the driver's instruction, the barrier is closed to block the discharge of the brick sphere and the snow removal solution.

Finally, the ninth main function is to move the wind to the rain removal module 151 to blow the wind out from the inside of the wheel and blow the rainwater collected under the wheel to the side, thereby preventing the slippage of the road due to the water film.

On the other hand, since there is a limitation in the storage of friction material, there is a disadvantage that it cannot be prevented indefinitely from slipping due to heavy snowfall.

Claims (5)

To make a slippery road a non-slip general road instead of attaching or changing a device to a vehicle to stop the vehicle safely without slipping on icy roads, snowy roads, and rain roads 1) Remove snow and rainwater around the wheels 2 ) by developing a material with good frictional force 3) spraying it on an icy road or snowy road to improve the static friction of the road by digging into the ice or snow with the weight of the wheel, and 4) promptly conveying the slippage situation to the following vehicle for speed Road anti-skid system (RAS), characterized in that it reduces The method of claim 1,
a) a wind suction step of smoothly sucking the air coming into the vehicle driving; and
b) a wind passage step of moving the sucked wind from the front of the vehicle to the side of the driving wheels (front wheels, rear wheels, etc.); and
c) A wind discharge step in which artificial wind by driving wind or a fan is blown strongly from the inside to the outside of the driving wheel and under the wheel; snow and rainwater around it are removed. The method of claim 1,
d) a friction agent selection step of selecting a brick sphere (or other material) made of sand and clay having fire resistance, water absorption and formability; and
e) As the formability changes according to the amount of sand and clay content, it is easily discharged to the outside, can absorb surrounding moisture, and is made into a disc-shaped acupressure needle shape (or other shape) with a rough surface and protruding parts. step; and
f) a friction agent drying step of heating only the surface to the strength that the protruding part is inserted into ice or snow under the weight of the vehicle wheel, and baking and drying (or other method) to replenish the eco-friendly friction agent in the center; Develop eco-friendly friction material. The method of claim 1,
g) the storage box contains a desiccant to keep the friction agent dry, and then a friction agent storage step of absorbing ambient moisture when discharged; and
h) discharging the friction agent uniformly, blocking the discharge according to the driver's instruction, and discharging the friction agent with the tip inclined toward the wheel to prevent the friction agent from being thrown out; and
i) The snow removal agent is sprayed on the wheels in a solution state and the frictional force maintenance step of maintaining the rubber state with high frictional force by preventing the freezing state of the wheels together with the snow removal liquid spraying around the wheels; and improving the frictional force of the road. The method of claim 1,
j) when the vehicle slides, automatically transmits the road location to the corporate broadcasting system (or other system), and stores the sliding road location in the DB; and
k) Transmitting the registered road location information (GPS, etc.) to all vehicles immediately, identifying the current location in a short time interval (0.1 seconds, 0.05 seconds, etc.) The vehicle decelerates on a slippery road through the vehicle deceleration step that induces the vehicle speed with an alarm when driving safely.

Images