KR20200041811A - Method for providing safe speed according to the weather information and computing device for executing the method - Google Patents

Abstract

Disclosed are a method for providing safety speed in accordance with weather information and a computing device for performing the same. The purpose of the present invention is to provide safety speed to a user to induce safety driving in accordance with weather information and a road situation. According to an embodiment of the present invention, the method for providing safety speed in accordance with weather information is performed by the computing device including one or more processors and a memory storing one or more programs performed by the one or more processors. The method for providing safety speed in accordance with weather information includes: a step of receiving vehicle driving information on the user; a step of receiving the weather information and road information from an outer server; a step of calculating a stop distance and visibility based on the vehicle driving information, the weather information, and the road information; and a step of determining driving speed of the vehicle based on the calculated stop distance and visibility.

Description

METHOD FOR PROVIDING SAFE SPEED ACCORDING TO THE WEATHER INFORMATION AND COMPUTING DEVICE FOR EXECUTING THE METHOD

Embodiments of the present invention relates to a technology for providing a safe speed according to weather information.

2. Description of the Related Art In general, a vehicle means a means of traveling on a road using fossil fuel, electricity, or the like as a power source.

2. Description of the Related Art Recently, various electronic devices have been added to vehicles to provide stability and convenience to drivers beyond simple means of transportation. For example, various convenience devices such as an air conditioner for adjusting the indoor temperature of the vehicle, a power window for controlling a side window with a button, and a power seat for adjusting a seat position and a backrest tilt with a button may be installed in the vehicle. You can.

In addition, various control technologies have been developed to perform various controls for the safety and convenience of the driver by installing various sensors inside and outside the vehicle for the safety of the driver.

On the other hand, a continuous flow road such as a highway has a high vehicle driving speed, and the vehicle operating conditions become very dangerous when the vehicle group traveling at high speed or the weather in front of the vehicle deteriorates, or when the road surface is water or ice.

Therefore, there is a need for a technology capable of controlling the safety speed according to the weather and road conditions.

Republic of Korea Patent Registration No. 10-1331054 (2013.11.13.)

Embodiments of the present invention is to provide a user with a safe speed in order to induce safe driving according to weather information and road conditions.

According to an exemplary embodiment of the present invention, as a method performed in a computing device having one or more processors, and a memory storing one or more programs executed by the one or more processors, receiving a vehicle driving information of a user To do; Receiving weather information and road surface information from an external server; Calculating a stop distance and a visibility distance based on the vehicle driving information, weather information, and road surface information; And determining whether the driving speed of the vehicle is a safe speed based on the calculated stop distance and visibility distance.

The road surface information may set the road surface type to at least one of dry, wet, and icing according to the weather information, and reflect a preset road friction coefficient according to the set road surface type.

The stop distance may satisfy the following equation using the road friction coefficient and the driving speed of the vehicle.

(Where D is the stopping distance (m), V is the driving speed (km / h), t is the driver's perceived response time (s), and f is the road friction coefficient according to the road surface condition.)

The visibility distance may satisfy the following equation using the rainfall intensity measured from the weather information and the driving speed of the vehicle.

(Here, Sv: visibility distance (m), I: rainfall intensity (km / h), and V: driving speed (km / h).)

The step of determining whether the driving speed of the vehicle is a safe speed is determined when the driving distance of the vehicle is a safety speed when the stopping distance is less than the visibility distance, and when the stopping distance is greater than the visibility distance, the The driving speed of the vehicle can be determined as a dangerous speed.

The step of determining whether the vehicle traveling speed is a safe speed may include calculating a speed limit so that the visibility distance becomes the stop distance; Providing the speed limit to the user when the driving speed of the vehicle is determined to be a safe speed; And generating a warning sound to the user when the driving speed of the vehicle is determined to be a dangerous speed.

According to another exemplary embodiment of the present invention, a computing device having one or more processors and a memory storing one or more programs executed by the one or more processors, the vehicle driving information of a user is received from a user terminal A communication module that receives weather information and road surface information from an external server; A safety speed analysis module for calculating a stop distance and a visibility distance based on the vehicle driving information, weather information, and road surface information; And a safety speed determination module that determines whether the driving speed of the vehicle is a safe speed based on the calculated stop distance and visibility distance.

The road surface information may set the road surface type to at least one of dry, wet, and icing according to the weather information, and reflect a preset road friction coefficient according to the set road surface type.

The safety speed analysis module may calculate the stopping distance that satisfies the following equation using the road friction coefficient and the driving speed of the vehicle.

(Where D is the stopping distance (m), V is the driving speed (km / h), t is the driver's perceived response time (s), and f is the road friction coefficient according to the road surface condition.)

The safety speed analysis module may calculate the visibility distance that satisfies the following equation using the rainfall intensity measured from the weather information and the driving speed of the vehicle.

(Here, Sv: visibility distance (m), I: rainfall intensity (km / h), and V: driving speed (km / h).)

The safety speed determination module determines the driving speed of the vehicle as a safety speed when the stop distance is less than the visibility distance, and determines the driving speed of the vehicle as a danger speed when the stop distance is greater than the visibility distance. can do.

The safety speed determination module calculates a speed limit so that the visibility distance becomes the stop distance, and when the vehicle speed is determined to be a safety speed, provides the speed limit to the user, and the vehicle speed is at a dangerous speed. If it is determined that it may generate a warning sound to the user.

According to embodiments of the present invention, by providing a user with a safe speed according to weather information and road conditions, real-time response according to weather and traffic conditions is possible and stability of road operations can be increased.

1 is a configuration diagram for explaining a system for providing a safe speed according to an embodiment of the present invention
2 is a configuration diagram for explaining a management server of a system for providing a safe speed according to an embodiment of the present invention
3 is a flow chart for explaining a method for providing a safe speed using a safe speed providing system according to an embodiment of the present invention
4 is a block diagram illustrating and illustrating a computing environment including a computing device suitable for use in example embodiments.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to aid in a comprehensive understanding of the methods, devices and / or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification. The terminology used in the detailed description is only for describing embodiments of the present invention and should not be limiting. Unless expressly used otherwise, a singular form includes a plural form. In this description, expressions such as “comprising” or “equipment” are intended to indicate certain characteristics, numbers, steps, actions, elements, parts or combinations thereof, and one or more other than described. It should not be interpreted to exclude the presence or possibility of other characteristics, numbers, steps, actions, elements, or parts or combinations thereof.

Further, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component.

In the following description, the terms “transmission”, “communication”, “transmission”, “reception” and the like of the signal or information are not only those in which a signal or information is transmitted directly from one component to another. This includes passing through other components. In particular, "transmitting" or "transmitting" a signal or information to a component indicates the final destination of the signal or information, not a direct destination. The same is true for the "reception" of a signal or information. Also, in this specification, when two or more pieces of data or information are “related” means that acquiring one piece of data (or information) can acquire at least part of the other piece of data (or information) based on it.

Meanwhile, an embodiment of the present invention may include a program for performing the methods described herein on a computer, and a computer-readable recording medium including the program. The computer-readable recording medium may include program instructions, local data files, local data structures, or the like alone or in combination. The media may be specially designed and constructed for the present invention, or may be commonly used in the field of computer software. Examples of computer readable recording media include specially configured to store and execute magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs, DVDs, and program instructions such as ROM, RAM, and flash memory. Hardware devices are included. Examples of the program may include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes made by a compiler.

1 is a configuration diagram for explaining a system for providing a safe speed according to weather information according to an embodiment of the present invention, and FIG. 2 is a configuration for explaining a management server for a system for providing a safe speed according to an embodiment of the present invention It is.

1 and 2, a system for providing a safe speed according to weather information according to an embodiment of the present invention may include a user terminal 100 and a management server 200.

As the user terminal 100 and the management server 200 are connected to each other using a communication network, communication may be possible.

In some embodiments, the communication network includes the Internet, one or more local area networks, wire area networks, cellular networks, mobile networks, other types of networks, or combinations of these networks. can do.

The user terminal 100 is a terminal for accessing the Internet or mobile, and may include any device capable of accessing the Internet or mobile, including, for example, a mobile terminal such as a PC, a smartphone, or a tablet such as a desktop or laptop. have. The user terminal 100 may perform data communication using the management server 200 and wireless communication.

In addition, the user terminal 100 may be installed with an application for providing a safe speed providing service. The application may be stored in a computer-readable storage medium of the user terminal 100. The application includes a predetermined set of instructions executable by the processor of the user terminal 100. The command may cause the processor of the user terminal 100 to perform an operation according to an exemplary embodiment. The computer-readable storage medium of the user terminal 100 includes components of an operating system for executing a set of instructions such as the application on the user terminal 100. For example, such an operating system may be Apple's iOS or Google's Android.

Here, the application for providing a safe speed providing service may provide an input interface (for example, selection among multiple menus, key input) through which the user's profile information can be input, and the user's profile through the input interface. Information can be entered. For example, an input interface for inputting profile information such as a user's age, gender, driving experience, and vehicle information may be provided to the user. Meanwhile, an application for providing a safety speed providing service may be provided as an independent application, but is not limited thereto, and may be included in an application (navigation) for guiding a general route.

In addition, an application for providing a safety speed providing service may receive vehicle driving information of a corresponding user using vehicle information. For example, GPS (Global Positioning System) information, vehicle speed information, vehicle RPM (Revolutions Per Minute) information, vehicle ABS (Anti-lock Breaking System) information, vehicle TCS (Traction Control System) information, and current time Vehicle information may be collected through an electronic control unit (ECU) mounted on the vehicle, and vehicle driving information may be input from the vehicle information. Here, the vehicle driving information may include a driving time, location, speed, and acceleration / deceleration of the vehicle.

The management server 200 may include a communication module 210, a storage module 220, a safety speed analysis module 230, and a safety speed determination module 240.

In this specification, a module may mean a functional and structural combination of hardware for performing the technical idea of the present invention and software for driving the hardware. For example, the "module" may mean a logical unit of a predetermined code and a hardware resource for executing the predetermined code, and does not necessarily mean a physically connected code or a type of hardware. .

The communication module 210 may communicate with the user terminal 100. For example, the management server 200 may receive user profile information and vehicle driving information from the user terminal 100.

Also, the communication module 210 may perform communication with an external server (not shown). For example, the management server 200 may receive weather information from an external server. In addition, the management server 200 may receive road surface information from an external server. Here, the weather information may include temperature, rainfall, snowfall, wind speed, humidity, insolation, and sunshine provided by external servers (for example, a meteorological server operated by a meteorological agency or a private weather operator), and road surface information May include road surface conditions (eg, drying, wetting, water film, snow, freezing, fog, etc.) provided by an external server (eg, a detector installed on a roadside).

The storage module 220 may store user profile information and vehicle driving information received from the user terminal 100. In addition, the storage module 220 may store weather information and road surface information received from an external server.

The safety speed analysis module 230 may calculate a stop distance from weather information, road surface information, and vehicle driving information. The safety speed analysis module 230 may calculate a stopping distance using Equation 1 below based on weather information, road surface information, and vehicle driving information. Here, the stop distance is the distance that the vehicle has progressed from the moment the driver recognizes the situation to stop until the vehicle stops completely, and can be calculated as the sum of the driving distance d1 and the braking stop distance d2 during the reaction time.

Equation 1

D: Stop distance (m)

d1: mileage during reaction time

d2: braking stop distance

V: Driving speed (km / h)

t: Driver cognitive response time (s)

f: Road friction coefficient according to road surface condition

In order to calculate the stop distance, the driver's cognitive response time (t) can be substituted for 2.5 seconds by estimating the cognitive response time of the general driver, and the road friction coefficient (f) according to the road surface condition is as illustrated in Table 1 below. The same estimate can be substituted.

Road surface type Road friction coefficient (higher average speed decreases) Dry concrete road surface 0.85 ~ 0.95 Dry asphalt road surface 0.8 ~ 0.9 Wet concrete road surface 0.4 ~ 0.6 Wet asphalt road surface 0.3 ~ 0.5 Freezing road 0.1 ~ 0.2

That is, the safety speed analysis module 230 may estimate the road friction coefficient according to the road surface state from the weather information and the road surface information, and calculate the stopping distance of the user by measuring the driving speed of the current vehicle from the vehicle driving information. For example, the safety speed analysis module 230 sets the road surface type from weather information as one of dry, wet, and icing, and substitutes a predetermined road friction coefficient according to the road surface type in Equation 1, and the vehicle By measuring the driving speed of the current vehicle from the driving information and substituting in Equation 1 above, the user's stopping distance can be calculated.

In addition, the safety speed analysis module 230 may calculate a visibility distance from weather information, road surface information, and vehicle driving information. The safety speed analysis module 230 may calculate a visibility distance using Equation 2 below based on weather information, road surface information, and vehicle driving information. Here, the visibility distance is a maximum distance that a driver can recognize with the naked eye, and reflects rainfall intensity as a factor of visibility disorder.

Equation 2

Sv: Visibility distance (m)

I: Rainfall intensity (km / h)

V: Driving speed (km / h)

That is, the safety speed analysis module 230 may measure rainfall intensity from weather information, and measure a current vehicle's driving speed from vehicle driving information to calculate a user's visibility distance.

As described above, the safety speed analysis module 230 may calculate a stop distance and a visibility distance from weather information, road surface information, and vehicle driving information.

The safety speed determination module 240 may determine the safety speed by reflecting the stop distance and the visibility distance analyzed from the safety speed analysis module 230. Specifically, the safety speed determination module 240 may determine whether the current vehicle driving speed is the safe speed by comparing the stop distance and the visibility distance. In addition, the safety speed determination module 240 may calculate the speed at which the visibility distance becomes the stop distance based on the analyzed stop distance and the visibility distance as the speed limit. Here, the speed limit is a speed limited to secure the driver's safety according to changes in weather conditions and road conditions, the safety speed means a speed lower than the speed limit, and the danger speed means a speed higher than the speed limit. For example, the safety speed determination module 240 may determine the current vehicle driving speed as the safety speed when the stop distance is smaller than the visibility distance. Also, the safety speed determination module 240 may determine the current vehicle driving speed as a dangerous speed when the stop distance is greater than the visibility distance. In addition, the safety speed determination module 240 may calculate a driving speed having a distance equal to a stop distance and a visibility distance as a speed limit. The safety speed determination module 240 may notify the user through a notification or a warning sound so that the user can recognize this when the current vehicle's driving speed is determined to be a dangerous speed.

Therefore, the method for providing a safe speed according to an embodiment of the present invention can prevent a traffic accident due to the observance of the safe speed by providing a safe speed according to a weather condition, a road surface condition, and a user. In addition, it is possible to respond to weather and road conditions in real time, thereby improving the stability of road operations.

3 is a flowchart illustrating a method for providing a safe speed using a safe speed providing system according to an embodiment of the present invention. The method illustrated in FIG. 3 may be performed, for example, by the above-described safety speed providing system. In the illustrated flow chart, the method is described by dividing it into a plurality of steps, but at least some of the steps are performed by reversing the order, combined with other steps, omitted, or divided into detailed steps, or not shown. One or more steps can be performed in addition.

The management server 200 receives vehicle driving information from the user terminal 100, and receives weather information and road surface information from an external server (S301).

Next, the management server 200 estimates the road friction coefficient according to the road surface state from the weather information and the road surface information, and calculates the user's stopping distance by measuring the driving speed of the current vehicle from the vehicle driving information (S302). In addition, the management server 200 measures the rainfall intensity from the weather information, and calculates the visibility distance of the user by measuring the driving speed of the current vehicle from the vehicle driving information (S303).

Then, the management server 200 compares the stop distance and the visibility distance (S304), and when the stop distance is smaller than the visibility distance, determines the driving speed of the current vehicle as a safety speed (S305). If, when the stop distance is greater than the visibility distance, the management server 200 determines the current vehicle driving speed as a dangerous speed (S306), and generates a warning sound to reduce the speed to the user (S307). At this time, by generating a warning sound until the driving speed of the current vehicle is determined to be a safe speed, the user can be alerted to the current speed and induced to reduce the speed.

Therefore, the method for providing a safe speed according to an embodiment of the present invention can prevent a traffic accident due to the observance of the safe speed by providing a safe speed according to a weather condition, a road surface condition, and a user.

4 is a block diagram illustrating and illustrating a computing environment including a computing device suitable for use in example embodiments. In the illustrated embodiment, each component may have different functions and capabilities in addition to those described below, and may include additional components in addition to those described below.

The illustrated computing environment 10 includes a computing device 12. In one embodiment, computing device 12 may be user terminal 100. Further, the computing device 12 may be the management server 200.

The computing device 12 includes at least one processor 14, a computer readable storage medium 16 and a communication bus 18. The processor 14 can cause the computing device 12 to operate in accordance with the exemplary embodiment mentioned above. For example, processor 14 may execute one or more programs stored on computer readable storage medium 16. The one or more programs can include one or more computer-executable instructions, which, when executed by the processor 14, configure the computing device 12 to perform operations according to an exemplary embodiment. Can be.

Computer readable storage medium 16 is configured to store computer executable instructions or program code, program data and / or other suitable types of information. The program 20 stored on the computer readable storage medium 16 includes a set of instructions executable by the processor 14. In one embodiment, the computer-readable storage medium 16 is a memory (volatile memory such as random access memory, non-volatile memory, or a suitable combination thereof), one or more magnetic disk storage devices, optical disk storage devices, flash Memory devices, other types of storage media that can be accessed by the computing device 12 and store desired information, or any suitable combination thereof.

The communication bus 18 interconnects various other components of the computing device 12, including a processor 14 and a computer-readable storage medium 16.

Computing device 12 may also include one or more I / O interfaces 22 and one or more network communication interfaces 26 that provide an interface for one or more I / O devices 24. The input / output interface 22 and the network communication interface 26 are connected to the communication bus 18. The input / output device 24 may be connected to other components of the computing device 12 through the input / output interface 22. Exemplary input / output devices 24 include pointing devices (such as a mouse or trackpad), keyboards, touch input devices (such as touch pads or touch screens), voice or sound input devices, various types of sensor devices, and / or imaging devices. Input devices, and / or output devices such as display devices, printers, speakers, and / or network cards. The exemplary input / output device 24 is a component constituting the computing device 12 and may be included in the computing device 12 or connected to the computing device 12 as a separate device distinct from the computing device 12. It might be.

Although the exemplary embodiments of the present invention have been described in detail above, those skilled in the art to which the present invention pertains will understand that various modifications are possible within the limits without departing from the scope of the present invention. . Therefore, the scope of rights of the present invention should not be limited to the described embodiments, and should be determined not only by the claims to be described later, but also by the claims and equivalents.

100: user terminal
200: management server
210: communication module
220: storage module
230: safety speed analysis module
240: safety speed determination module

Claims (12)

One or more processors, and
A method performed in a computing device having a memory for storing one or more programs executed by the one or more processors,
Receiving user's vehicle driving information;
Receiving weather information and road surface information from an external server;
Calculating a stop distance and a visibility distance based on the vehicle driving information, weather information, and road surface information; And
And determining whether the driving speed of the vehicle is a safe speed based on the calculated stop distance and visibility distance.
The method according to claim 1,
The road surface information,
A method of setting a road surface condition type according to the weather information to at least one of drying, wetting, and freezing, and reflecting a predetermined road friction coefficient according to the set road surface condition type.
The method according to claim 2,
The stop distance,
A method that satisfies the following equation using the road friction coefficient and the driving speed of the vehicle.

(Where D is the stopping distance (m), V is the driving speed (km / h), t is the driver's perceived response time (s), and f is the road friction coefficient according to the road surface condition.)
The method according to claim 2,
The visibility distance,
Method of satisfying the following equation by using the rainfall intensity and the driving speed of the vehicle measured from the weather information.

(Here, Sv: visibility distance (m), I: rainfall intensity (km / h), and V: driving speed (km / h).)
The method according to claim 1,
The step of determining whether the driving speed of the vehicle is a safe speed,
When the stop distance is less than the visibility distance, the driving speed of the vehicle is determined as a safety speed, and when the stop distance is greater than the visibility distance, the driving speed of the vehicle is determined as a dangerous speed.
The method according to claim 5,
The step of determining whether the driving speed of the vehicle is a safe speed,
Calculating a speed limit so that the correction distance becomes the stop distance;
Providing the speed limit to the user when the driving speed of the vehicle is determined to be a safe speed; And
And generating a warning sound to the user when the driving speed of the vehicle is determined to be a dangerous speed.
One or more processors, and
A computing device having a memory that stores one or more programs executed by the one or more processors,
A communication module that receives the user's vehicle driving information from the user terminal and receives weather information and road surface information from an external server;
A safety speed analysis module for calculating a stop distance and a visibility distance based on the vehicle driving information, weather information, and road surface information; And
And a safety speed determination module for determining whether the driving speed of the vehicle is a safe speed based on the calculated stop distance and a corrected distance.
The method according to claim 7,
The road surface information,
A computing device that sets a road surface type according to the weather information to at least one of dry, wet, and icing, and reflects a predetermined road friction coefficient according to the set road surface type.
The method according to claim 8,
The safety speed analysis module,
Computing device for calculating the stopping distance that satisfies the following equation using the road friction coefficient and the driving speed of the vehicle.

(Where D is the stopping distance (m), V is the driving speed (km / h), t is the driver's perceived response time (s), and f is the road friction coefficient according to the road surface condition.)

The method according to claim 8,
The safety speed analysis module,
Computing device for calculating the visibility distance that satisfies the following equation by using the rainfall intensity and the driving speed of the vehicle measured from the weather information.

(Here, Sv: visibility distance (m), I: rainfall intensity (km / h), and V: driving speed (km / h).)
The method according to claim 7,
The safety speed determination module,
When the stop distance is less than the visibility distance, the driving speed of the vehicle is determined as a safety speed, and when the stop distance is greater than the visibility distance, the travel speed of the vehicle is determined as a dangerous speed.
The method according to claim 11,
The safety speed determination module,
The speed limit is calculated such that the correction distance becomes the stop distance,
When the driving speed of the vehicle is determined to be a safe speed, the speed limit is provided to the user, and when the driving speed of the vehicle is determined to be a dangerous speed, a warning sound is generated to the user.

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