KR102224251B1 - Method for providing safe speed by age and computing device for executing the method - Google Patents

Abstract

Disclosed are a method of providing a safe speed for each age and a computing device for performing the same. A method of providing a safe speed for each age according to an embodiment of the present invention and a computing device for performing the same are 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. A method comprising: receiving profile information and vehicle driving information of a user; Receiving weather information and road surface information from an external server; Calculating a stop distance based on the user profile information, weather information, and road surface information; Calculating a visibility distance based on the weather information and vehicle operation information; And calculating the speed limit of the vehicle based on the calculated stopping distance and visibility distance.

Description

A method of providing safe speed by age and a computing device to perform it {METHOD FOR PROVIDING SAFE SPEED BY AGE AND COMPUTING DEVICE FOR EXECUTING THE METHOD}

Embodiments of the present invention are related to a technology for providing a safe speed for each age.

In general, a vehicle refers to a means for traveling on a road using fossil fuel, electricity, or the like as a power source.

In recent years, various electronic devices have been added to vehicles to provide stability and convenience to a driver beyond a simple means of transportation. For example, a vehicle may be equipped with various convenience devices such as an air conditioner that controls the indoor temperature of the vehicle, a power window for controlling the side window with a button, and a power seat that can adjust the position of the seat and the slope of the back with a button. I can.

In addition, for the safety of the driver, 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.

On the other hand, a continuous flow road such as a highway has a high vehicle driving speed, and when the weather conditions in front of the vehicle group or vehicle running at a high speed are deteriorated, or the road surface is in a water film or ice condition, the vehicle operating condition becomes a very dangerous state.

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

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

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

In addition, embodiments of the present invention are to provide a safe speed to the user in consideration of the cognitive response according to the user's age.

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 for storing one or more programs executed by the one or more processors, the user's profile information and vehicle operation Receiving information; Receiving weather information and road surface information from an external server; Calculating a stop distance based on the user profile information, weather information, and road surface information; Calculating a visibility distance based on the weather information and vehicle operation information; And calculating a speed limit of the vehicle based on the calculated stopping distance and visibility distance.

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

The stopping distance satisfies the following equation using the road friction coefficient,

(Here, D: stopping distance (m), V1: speed (km/h), t: driver perception reaction time (s) by age, f: road friction coefficient according to road surface conditions.)

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), V2: driving speed (km/h).)

The step of calculating the speed limit of the vehicle includes obtaining a speed V1 at which the stopping distance and the visibility distance are the same using the road friction coefficient, the rainfall intensity, and the driving speed of the vehicle, and setting the speed V1 as the limit speed. Can be calculated.

The age-specific cognitive response time confirms the user's age from the user profile information, and reflects a weight according to a preset factor according to the user's age, and the preset factor is a response time according to a decrease in moving body vision and a search time. , Sign reading time, and decision making time according to the road geometry.

According to another exemplary embodiment of the present invention, a computing device having one or more processors and a memory for storing one or more programs executed by the one or more processors, comprising: user profile information and vehicle driving information from a user terminal And a communication module for receiving weather information and road surface information from an external server; A stop distance is calculated based on the user profile information, weather information, and road surface information, a visibility distance is calculated based on the weather information and vehicle operation information, and the vehicle's Safe speed analysis module for calculating the speed limit; And a safe speed providing module that provides the calculated speed limit of the vehicle to the user terminal.

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

The safe speed analysis module calculates the stopping distance satisfying the following equation by using the road friction coefficient,

(Here, D: stopping distance (m), V1: speed (km/h), t: driver perception reaction time (s) by age, and f: road friction coefficient according to road surface conditions.)

The visibility distance that satisfies the following equation may be calculated 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), V2: driving speed (km/h).)

The safe speed analysis module may obtain a speed V1 such that the stopping distance and the visibility distance are the same using the road friction coefficient, the rainfall intensity, and the driving speed of the vehicle, and calculate the speed V1 as a limit speed. .

The safety speed analysis module checks the age of the user from the user profile information, estimates the cognitive reaction time for each age by reflecting a weight according to a preset factor according to the user's age, and the preset factor is the motion visual acuity It may include at least one or more of a response time according to a decrease, a search time, a sign reading time, and a decision making time according to a road geometry.

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

In addition, by providing a safe speed according to the user's age, it is possible to prevent the occurrence of an accident by inducing a lower speed in advance in consideration of the cognitive reaction according to the user's age.

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

Hereinafter, a specific embodiment 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 a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description thereof 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 the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification. The terms used in the detailed description are only for describing embodiments of the present invention, and should not be limiting. Unless explicitly used otherwise, expressions in the singular form include the meaning of the plural form. In this description, expressions such as "comprising" or "feature" are intended to indicate certain features, numbers, steps, actions, elements, some or combination thereof, and one or more It should not be construed to exclude the presence or possibility of other features, numbers, steps, actions, elements, any part or combination thereof.

In addition, 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 another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

In the following description, "transmission", "communication", "transmission", "reception" of signals or information, and other terms having a similar meaning are not only directly transmitted signals or information from one component to another component. It includes what is passed through other components. In particular, "transmitting" or "transmitting" a signal or information to a component indicates the final destination of the signal or information and does not mean a direct destination. The same is true for "reception" of signals or information. In addition, in the present specification, when two or more pieces of data or information are "related", it means that when one data (or information) is obtained, at least a part of other data (or information) can be obtained based thereon.

Meanwhile, an embodiment of the present invention may include a program for performing the methods described in the present specification on a computer, and a computer-readable recording medium including the program. The computer-readable recording medium may include a program command, a local data file, a local data structure, or the like alone or in combination. The media may be specially designed and configured for the present invention, or may be commonly used in the field of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and specially configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Includes hardware devices. Examples of the program may include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

1 is a configuration diagram illustrating 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 of a system for providing a safe speed according to an embodiment of the present invention And FIG. 3 is a flowchart for explaining the operation of the management server of the system for providing a safe speed according to an embodiment of the present invention.

1 to 3, 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 a combination of these networks. can do.

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

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 an instruction set such as the application on the user terminal 100. For example, such an operating system may be iOS of Apple (Apple) or Android of Google (Google).

Here, the application for providing the safe speed provision service may provide an input interface (for example, selection from a plurality of menus, key input) through which user profile information can be input, and user profile information is provided through the input interface. Input can be received. For example, an input interface for inputting profile information such as the user's age, gender, driving experience, and vehicle information may be provided to the user. Meanwhile, an application for providing a safe 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 and provided.

In addition, an application for providing a safe 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 can be collected through an ECU (Electronic Control Unit) mounted on a vehicle, and vehicle driving information can be input from vehicle information. Here, the vehicle operation information may include a vehicle operation time, a position, a speed, an acceleration/deceleration speed, and the like.

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

In the present 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. Predictably, 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 single 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.

In addition, 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 meteorological information may include temperature, rainfall, snowfall, wind speed, humidity, solar radiation, sunlight, etc. provided from an external server (e.g., a meteorological server operated by a meteorological agency or a private meteorological service provider), and road surface information May include road conditions (eg, dry, wet, water film, snow, freezing, fog, etc.) provided from an external server (eg, a detector installed on the 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 safe speed analysis module 230 may calculate a stopping distance from user profile information, weather information, road surface information, and vehicle operation information. The safe speed analysis module 230 may calculate the stopping distance using Equation 1 below based on user profile information, weather information, road surface information, and vehicle operation information. Here, the stopping distance is the distance the vehicle travels from the moment the driver recognizes the situation to stop until the vehicle completely stops, 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 the reaction time

d2: Braking stop distance

V1: Speed (km/h)

t: Driver's cognitive response time by age (s)

f: Road friction coefficient according to the road surface condition

In order to calculate the stopping distance, the road friction coefficient f according to the road surface condition may be substituted with an estimated value as illustrated in Table 1 below.

Road condition type Road friction coefficient (the higher the average speed, the smaller it is) 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 surface 0.1~0.2

In addition, in order to calculate the stopping distance, the driver perception reaction time t by age may be estimated in consideration of the user's age. Here, the driver's cognitive reaction time is the act of moving the foot to apply the brake, and in general, the driver's cognitive response time standard in road design is based on the perception (risk factor determination time 1.5 seconds) and the reaction (braking system operation time 1 second). 2.5 seconds. The driver's cognitive response time increases with age due to decreased visual acuity, cognitive cognitive function, and motor capacity due to aging. That is, the safety speed analysis module 230 may determine the age of the user from the user profile information and estimate a driver's cognitive reaction time for each age by assigning a weight according to a preset factor according to the user's age. For example, if the user's age is greater than a preset age, a weight according to a preset factor may be assigned to a general driver's cognitive response time (2.5 seconds) to estimate the driver's cognitive response time by age. The preset factors may include reaction time according to decrease in moving body vision, search time, sign reading time, and decision making time according to road geometry (intersection, entrance/exit, curve).

That is, the safety speed analysis module 230 estimates the road friction coefficient according to the road surface condition from the weather information and the road surface information, measures the current driving speed of the vehicle from the vehicle operation information, and estimates the cognitive response time for each age of the user. The user's stopping distance can be calculated. For example, the safety speed analysis module 230 sets the road surface condition type to one of dry, wet, and icing from the weather information, and substitutes the road friction coefficient preset according to the road surface condition type into Equation 1, and the vehicle The current driving speed of the vehicle is measured from the driving information and substituted into Equation 1, and the user's stopping distance can be calculated by substituting a preset age-specific driver perception reaction time according to the user's age into Equation 1 above.

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

Equation 2

Sv: Visibility distance (m)

I: rainfall intensity (km/h)

V2: Driving speed (km/h)

That is, the safe speed analysis module 230 may measure the rainfall intensity from weather information and measure the current driving speed of the vehicle from the vehicle operation information to calculate the visibility distance of the user. In this way, the safety speed analysis module 230 may calculate a stop distance and a visibility distance from weather information, road surface information, and vehicle operation information.

In an exemplary embodiment, the safe speed analysis module 230 may calculate the speed limit using the stopping distance and the visibility distance. Here, the speed limit is a speed that is limited to secure the driver's safety according to changes in weather conditions and road conditions. Specifically, when the stopping distance is greater than the visibility distance, the safety speed analysis module 230 has a risk of collision, and thus the speed limit may be obtained by making the stopping distance and the visibility distance the same. That is, by placing Equations 1 and 2 equal to each other, a value for the speed V1 may be obtained, and a value for the speed V1 may be set as the speed limit.

Accordingly, the method for providing a safe speed according to an embodiment of the present invention provides a safe speed in consideration of a cognitive reaction according to the user's age, thereby inducing a speed reduction in advance to prevent an accident. In addition, it is possible to respond to weather and road conditions in real time, thereby improving the stability of road operation.

The safe speed providing module 240 may provide the speed limit set by the safe speed analysis module 230 to the user terminal 100. In addition, the safe speed providing module 240 may determine the safe speed by reflecting the stopping distance and the visibility distance analyzed from the safe speed analysis module 230. In addition, the safe speed providing module 240 may determine a safe speed or a dangerous speed and provide it to the user terminal 100. Specifically, the safe speed providing module 240 may determine whether the current driving speed of the vehicle is a safe speed by comparing the stopping distance and the visibility distance. Here, the safe speed means a speed lower than the speed limit, and the dangerous speed means a speed higher than the speed limit. For example, when the stopping distance is less than the visibility distance, the safe speed providing module 240 may determine the current driving speed of the vehicle as the safe speed. In addition, the safe speed providing module 240 may determine the current driving speed of the vehicle as a dangerous speed when the stopping distance is greater than the visibility distance. When the current driving speed of the vehicle is determined to be a dangerous speed, the safe speed providing module 240 may notify the user through a notification or a warning sound so that the user can recognize it.

Accordingly, the method of providing a safe speed according to an embodiment of the present invention can prevent a traffic accident due to compliance with 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 describing 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, the computing device 12 may be a user terminal 100. Also, the computing device 12 may be a 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 may cause the computing device 12 to operate in accordance with the aforementioned exemplary embodiments. For example, the processor 14 may execute one or more programs stored in the computer-readable storage medium 16. The one or more programs may include one or more computer-executable instructions, and the computer-executable instructions are configured to cause the computing device 12 to perform operations according to an exemplary embodiment when executed by the processor 14. Can be.

The computer-readable storage medium 16 is configured to store computer-executable instructions or program code, program data, and/or other suitable form of information. The program 20 stored in 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 includes memory (volatile memory such as random access memory, nonvolatile memory, or a suitable combination thereof), one or more magnetic disk storage devices, optical disk storage devices, flash It may be memory devices, other types of storage media that can be accessed by the computing device 12 and store desired information, or a suitable combination thereof.

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

Computing device 12 may also include one or more input/output interfaces 22 and one or more network communication interfaces 26 that provide interfaces for one or more input/output 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. The exemplary input/output device 24 includes a pointing device (such as a mouse or trackpad), a keyboard, a touch input device (such as a touch pad or a touch screen), a voice or sound input device, and various types of sensor devices and/or a photographing device. Input devices, and/or output devices such as display devices, printers, speakers, and/or network cards. The exemplary input/output device 24 may be included in the computing device 12 as a component constituting the computing device 12, and may be connected to the computing device 12 as a separate device distinct from the computing device 12. May be.

Although the exemplary embodiments of the present invention have been described in detail above, those of ordinary skill in the art to which the present invention pertains will understand that various modifications can be made to the above-described embodiments without departing from the scope of the present invention. . Therefore, the scope of the present invention is limited to the described embodiments and should not be determined, and should not be determined by the claims to be described later, but also by those equivalents to the claims.

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

Claims (10)

One or more processors, and
A method performed in a computing device having a memory storing one or more programs executed by the one or more processors,
Receiving user profile information and vehicle driving information;
Receiving weather information and road surface information from an external server;
Calculating a stop distance based on the user profile information, weather information, and road surface information;
Calculating a visibility distance based on the weather information and vehicle operation information; And
Comprising the step of calculating the speed limit of the vehicle based on the calculated stopping distance and visibility distance,
The above road surface information,
The road surface condition type is set to at least one of dry, wet, and icing according to the weather information, and a road friction coefficient preset according to the set road surface condition type is reflected,
The stopping distance is,
The following equation is satisfied using the road friction coefficient,

(Here, D: stopping distance (m), V1: speed (km/h), t: driver perception reaction time (s) by age, and f: road friction coefficient according to road surface conditions.)
The visibility distance is,
A method that satisfies the following equation by 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), V2: driving speed (km/h).)
delete delete The method according to claim 1,
The step of calculating the speed limit of the vehicle,
Using the road friction coefficient, the rainfall intensity, and the driving speed of the vehicle, a speed V1 at which the stopping distance and the visibility distance are the same is obtained, and the speed V1 is calculated as a speed limit.
The method of claim 4,
The cognitive reaction time for each age is,
Checking the user's age from the user profile information, and reflecting a weight according to a preset factor according to the user's age,
The predetermined factor includes at least one or more of a reaction time according to a decrease in moving body vision, a search time, a sign reading time, and a decision making time according to a road geometry.
One or more processors, and
A computing device having a memory storing one or more programs executed by the one or more processors,
A communication module receiving user profile information and vehicle driving information from a user terminal, and receiving weather information and road surface information from an external server;
A stop distance is calculated based on the user profile information, weather information, and road surface information, a visibility distance is calculated based on the weather information and vehicle operation information, and the vehicle's Safe speed analysis module for calculating the speed limit; And
And a safe speed providing module that provides the calculated speed limit of the vehicle to the user terminal,
The above road surface information,
The road surface condition type is set to at least one of dry, wet, and icing according to the weather information, and a road friction coefficient preset according to the set road surface condition type is reflected,
The safe speed analysis module,
The stopping distance that satisfies the following equation is calculated using the road friction coefficient,

(Here, D: stopping distance (m), V1: speed (km/h), t: driver perception reaction time (s) by age, and f: road friction coefficient according to road surface conditions.)
A computing device for calculating the visibility distance satisfying the following equation by 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), V2: driving speed (km/h).)
delete delete The method of claim 6,
The safe speed analysis module,
A computing device for calculating a speed V1 such that the stopping distance and the visibility distance are equal to each other by using the road friction coefficient, the rainfall intensity, and the driving speed of the vehicle, and calculating the speed V1 as a limit speed.
The method of claim 9,
The safe speed analysis module,
Checking the age of the user from the user profile information, and estimating the cognitive reaction time for each age by reflecting a weight according to a preset factor according to the user's age
The predetermined factor includes at least one of a reaction time according to a decrease in moving body vision, a search time, a sign reading time, and a decision making time according to a road geometry.

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