KR102546614B1 - Method and system for guiding economic driving based on v2x communication - Google Patents

Abstract

A method and system capable of inducing economic driving of a driver using V2X communication are disclosed. An economic driving induction method using V2X communication includes collecting at least one of road information, traffic signal information, and surrounding vehicle information using V2X communication; determining a target speed of the host vehicle using the collected information; and transmitting an acceleration or deceleration request message to the driver's wearable device according to the target speed and the current speed of the host vehicle.

Description

Method and system for inducing economic driving using V2X communication {METHOD AND SYSTEM FOR GUIDING ECONOMIC DRIVING BASED ON V2X COMMUNICATION}

The present invention relates to a method and system capable of inducing economic driving of a driver using V2X communication.

Recently, interest in eco-friendly vehicles has increased, and a system that provides an economical driving speed that can increase fuel efficiency to a driver is being used to increase fuel efficiency of the vehicle. Such a system receives measurements of the driving speed and fuel consumption of the vehicle from sensors installed in the vehicle, calculates an economic driving speed of the vehicle based on the received measurements, and provides the calculated driving speed to the driver. That is, the economic driving speed is calculated using only information about the own vehicle and provided to the driver.

However, since the speed of the vehicle is affected not only by the own vehicle but also by surrounding vehicles and traffic conditions, it is not easy for the driver to drive the vehicle at the economical driving speed calculated by the above-described system.

In addition, in order to provide information on economic driving speed to the driver, not only a display and a speaker are used, but also an actuator providing a sense of touch, which leads to an increase in manufacturing cost of the vehicle.

As related prior literature, there are patent documents, Republic of Korea Patent Registration Nos. 10-2107774 and 10-1630727, and Republic of Korea Patent Publication No. 2019-0057507.

An object of the present invention is to provide a method and system for inducing a driver to drive economically in consideration of the surrounding environment of the vehicle.

Another object of the present invention is to provide a method and system capable of inducing a driver to perform economical driving without having to mount a separate actuator to the vehicle to provide economic driving speed information to the driver.

According to an embodiment of the present invention for achieving the above object, using V2X communication, collecting at least one of road information, traffic signal information and surrounding vehicle information; determining a target speed of the host vehicle using the collected information; and transmitting an acceleration or deceleration request message to the wearable device of the driver of the own vehicle according to the target speed and the current speed of the own vehicle.

In addition, according to another embodiment of the present invention for achieving the above object, determining whether a wearable device of a driver's own vehicle exists inside the own vehicle; Collecting at least one of road information, traffic signal information, and surrounding vehicle information using V2X communication; determining a target speed of the host vehicle using the collected information; And based on the determination result, the target speed and the current speed of the host vehicle, controlling the current speed to the target speed or transmitting an acceleration or deceleration request message to the wearable device Economic driving using V2X communication including An induction method is provided.

According to one embodiment of the present invention, the economic driving speed at which the vehicle can actually be driven is provided to the driver through information on the surrounding environment as well as information on the own vehicle, so that the driver can drive economically at an economic driving speed suitable for a given traffic situation. can do.

In addition, according to an embodiment of the present invention, even if a separate actuator for vibrating a steering wheel or a seat is not mounted in a vehicle, information on an economic driving speed can be effectively provided to the driver using the driver's wearable device.

1 is a diagram for explaining an economic driving induction system using V2X communication according to an embodiment of the present invention.
2 is a diagram for explaining a method for inducing economic driving using V2X communication according to an embodiment of the present invention.
3 is a diagram for explaining a method for inducing economic driving using V2X communication according to another embodiment of the present invention.
4 is a diagram for explaining a simulation system in a V2X environment according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

The present invention relates to a method and apparatus capable of inducing economic driving of a driver by providing the driver with an economical driving speed capable of increasing fuel efficiency in consideration of the surrounding environment of the vehicle in motion.

An embodiment of the present invention determines the economic driving speed by collecting information about the surroundings of the vehicle using V2X communication. The information collected through V2X communication may include at least one of road information, traffic signal information, and surrounding vehicle information that may affect the driving speed of the vehicle.

When the economic driving speed is determined based only on information about the own vehicle, it is difficult for the vehicle to drive at the economic driving speed due to actual traffic conditions, and it is difficult for the driver to perform economic driving. However, according to an embodiment of the present invention, the economic driving speed at which the vehicle can actually be driven is provided to the driver through information on the surrounding environment as well as information on the own vehicle, so that the driver can drive economically at an economic driving speed suitable for a given traffic situation. can drive

In addition, an embodiment of the present invention uses a driver's wearable device to provide the driver with information on the economic driving speed determined by collecting information about the surroundings of the vehicle. The wearable device may provide the driver with information on whether acceleration or deceleration is required in order for the driving speed of the vehicle to reach the economic driving speed, in the form of vibration.

Therefore, according to one embodiment of the present invention, even if a separate actuator for vibrating the steering wheel or seat is not mounted in the vehicle, information on the economic driving speed can be effectively provided to the driver using the driver's wearable device. .

The method for inducing economic driving according to an embodiment of the present invention may be performed in a vehicle or a computing device including a processor and a memory.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram for explaining an economic driving induction system using V2X communication according to an embodiment of the present invention.

Referring to FIG. 1 , an economic driving induction system according to an embodiment of the present invention includes an economic driving induction device and a wearable device 140, and the economic driving induction device includes a V2X communication unit 110 and a speed determining unit 120 ), and a message transmission unit 130. The economic driving guidance device may be mounted on a vehicle.

The V2X communication unit 110 receives at least one of road information, traffic signal information, and surrounding vehicle information through vehicle-to-vehicle communication (V2V) or vehicle-to-infrastructure communication (V2V).

As an embodiment, the road information may include speed limit information of the road on which the vehicle is traveling, and the traffic signal information may include information such as the position of a traffic light, the type of signal, and the remaining time until the signal is changed. . The surrounding vehicle information may include state information including the location and speed of the surrounding vehicle, and average driving speed information of the surrounding vehicle.

The V2X communication unit 110 may receive road information, traffic signal information, average driving speed information, etc. from the infrastructure through vehicle-to-infrastructure communication, and receive state information of surrounding vehicles from surrounding vehicles through vehicle-to-vehicle communication. can

The speed determining unit 120 determines the economic driving speed of the own vehicle, that is, the target speed, by using the surrounding information of the own vehicle, and the information received through the V2X communication unit 110 corresponds to the surrounding information of the own vehicle. The speed determining unit 120 may determine an economic driving speed at which the host vehicle can actually operate according to a surrounding driving environment, among economic driving speeds at which fuel efficiency of the host vehicle may be increased. The economic driving speed determination method is described in more detail with reference to FIGS. 2 to 4 .

The message transmission unit 130 transmits an acceleration or deceleration request message to the driver's wearable device according to the target speed and the current speed of the host vehicle. The message transmission unit 130 transmits a deceleration request message when the current speed is higher than the target speed, and transmits an acceleration request message when the current speed is lower than the target speed.

The wearable device 140 provides an alarm to the driver in different patterns according to message types. The wearable device 140 may be worn on a wrist, such as a smart watch or smart bracelet, or may be a glasses-type device such as smart glasses, and may include an actuator that provides vibration, a communication module that transmits and receives data, and a sensor that collects biometric information etc. may be included.

The type of alarm may be, for example, vibration, and upon receiving the acceleration request message, the wearable device 140 may periodically provide a vibrating pattern continuously and at short intervals to the driver. Alternatively, when the wearable device 140 receives the deceleration request message, it may provide the driver with a vibrating pattern with a shorter period than in the case of the acceleration request message.

In particular, the deceleration request message may be divided into a deceleration request message of a type indicating a general deceleration and a sudden stop, and when the wearable device 140 receives the type of deceleration request message indicating a sudden stop, a very strong vibration is continuously transmitted to the driver. can provide

The driver can recognize whether acceleration or deceleration is currently required through an alarm provided from the wearable device, and accordingly, the vehicle speed can be adjusted so that the current speed of the vehicle corresponds to the economic driving speed.

Meanwhile, according to embodiments, the driver may wear a plurality of wearable devices 140, and the message transmission unit 130 may transmit a message to all or selectively transmit a message to a plurality of wearable devices.

2 is a diagram for explaining a method for inducing economic driving using V2X communication according to an embodiment of the present invention.

Referring to FIG. 2 , the vehicle according to an embodiment of the present invention collects (S210) at least one of road information, traffic signal information, and surrounding vehicle information using V2X communication, and uses the collected information to A target speed, that is, an economic driving speed capable of increasing fuel efficiency is determined (S220). In step S220, the vehicle according to an embodiment of the present invention may determine a target speed capable of reducing sudden acceleration or deceleration of the own vehicle in consideration of surrounding traffic conditions of the own vehicle.

And, according to the target speed and the current speed of the own vehicle, an acceleration or deceleration request message is transmitted to the driver's wearable device (S230). The vehicle may transmit a deceleration request message when the current speed is higher than the target speed, and transmit an acceleration request message when the current speed is lower than the target speed.

Meanwhile, in step S220, the vehicle according to an embodiment of the present invention may determine the target speed according to the following four scenarios.

Scenario 1: Absence of surrounding vehicles and traffic lights

The vehicle according to an embodiment of the present invention may determine the speed limit of the road on which the vehicle travels as the target speed when there are no surrounding vehicles and traffic lights within a preset radius from the vehicle. A vehicle according to an embodiment of the present invention may determine whether there are vehicles or traffic lights around the vehicle through surrounding vehicle information and traffic signal information, and as an embodiment, a preset radius may be set to 500 m. there is.

Scenario 2: Presence of nearby vehicles

The vehicle according to an embodiment of the present invention may determine the average speed of the surrounding vehicles positioned in front of the vehicle as the target speed when there is a surrounding vehicle located in front of the own vehicle within a preset distance from the own vehicle. A vehicle according to an embodiment of the present invention may determine an average speed of surrounding vehicles as a target speed using vehicle state information transmitted from surrounding vehicles or average driving speed information from infrastructure.

At this time, when the current speed of the host vehicle is slower than the target speed, the vehicle according to an embodiment of the present invention may gradually increase the target speed. In this case, the driver of the host vehicle can be induced to gradually increase the speed without rapid acceleration, and thus more economical driving can be achieved.

As an example, the target speed may be set to an initial value smaller than the average speed of surrounding vehicles by a preset value, and may be increased by a preset value at each preset time interval. Alternatively, the vehicle according to an embodiment of the present invention increases the target speed when the current speed corresponds to the initial value, and then increases the target speed whenever the current speed corresponds to the target speed, so that the target speed finally reaches the surroundings. The target speed can be adjusted to be the average speed of the vehicle.

Scenario 3: Presence of nearby traffic lights

In the vehicle according to an embodiment of the present invention, when a traffic light exists within a preset distance from the own vehicle, using traffic signal information and the current speed of the own vehicle, it is determined whether the vehicle can pass through the section where the traffic light is installed, A target speed may be determined according to the determination result.

As an embodiment, the vehicle according to an embodiment of the present invention, when a traffic light exists within a distance of 500 m ahead of the host vehicle, can determine whether or not the host vehicle can pass through the section where the traffic light is installed based on the current speed of the host vehicle. there is. For example, if there is an intersection with traffic lights installed 300m ahead of the host vehicle and it is determined that the vehicle can pass through the intersection, the vehicle according to an embodiment of the present invention determines the current speed of the host vehicle as the target speed, When it is determined that the host vehicle will not pass, the target speed may be determined as 0.

Scenario 4: Presence of a vehicle ahead

A vehicle according to an embodiment of the present invention may determine a target speed to follow a nearby vehicle located in front of the vehicle when the estimated time of collision between the vehicle and the vehicle is within a preset threshold time. The expected collision time between the surrounding vehicle and the host vehicle can be calculated through the relative speed and distance between the host vehicle and the surrounding vehicle, and when the predicted collision time is less than 3 seconds, the vehicle according to one embodiment of the present invention is in front A target speed can be determined so as to follow nearby vehicles located there.

Since the aforementioned four scenarios can occur simultaneously while driving, the vehicle according to an embodiment of the present invention has priority set in the order of the fourth scenario, the third scenario, the second scenario, and the first scenario when all or some of the four scenarios occur simultaneously. The target speed can be determined according to the ranking. That is, the fourth scenario has the highest priority, and the first scenario has the lowest priority.

Meanwhile, the vehicle according to an embodiment of the present invention may control the current speed of the host vehicle to the target speed (S240). As in the fourth scenario, when there is a vehicle that may collide with the host vehicle in front of the host vehicle, the target speed may be not only an economic driving speed but also a collision avoidance speed. Since an accident may occur if the driver does not reduce the speed of the vehicle in a situation such as the fourth scenario, the vehicle according to an embodiment of the present invention, even after the deceleration request message is transmitted, the vehicle's current speed and target target for a preset time When the difference in speed is greater than or equal to a preset threshold, the speed of the host vehicle may be controlled so that the current speed of the host vehicle becomes a target speed.

However, if the vehicle forcibly intervenes in driving, it may cause discomfort to the driver or cause another accident. It is possible to control the current speed of the target speed. A vehicle according to an embodiment of the present invention may use biometric information to control the current speed of the host vehicle to a target speed when the driver is in a drowsy state or has a disease symptom. For example, when the driver has a heart attack due to myocardial infarction, the current speed of the own vehicle may be controlled to a target speed.

As an embodiment, the biometric information may be oxygen saturation, electrocardiogram, and the like, and the driver's condition may be determined from the biometric information through various algorithms for determining the body condition through an artificial neural network or biometric information.

3 is a diagram for explaining a method for inducing economic driving using V2X communication according to another embodiment of the present invention.

Referring to FIG. 3 , the vehicle according to an embodiment of the present invention determines whether a driver's wearable device exists inside the vehicle (S310). As an example, when the wearable device is paired with a vehicle or connected to an access point of the vehicle, it may be determined that the wearable device exists inside the vehicle.

In addition, the vehicle according to an embodiment of the present invention collects at least one of road information, traffic signal information, and surrounding vehicle information using V2X communication (S320), and determines the target speed of the own vehicle using the collected information. (S330).

The vehicle according to an embodiment of the present invention controls the current speed of the own vehicle to the target speed or transmits an acceleration or deceleration request message to the wearable device according to the determination result of step S310 and the target speed and the current speed of the own vehicle (S340 )do. In step S340, the vehicle according to an embodiment of the present invention transmits an acceleration or deceleration request message to the wearable device when the wearable device exists inside the vehicle, and when the wearable device does not exist inside the vehicle, the current speed of the vehicle Can be controlled at target speed.

On the other hand, the driver can use a plurality of wearable devices, and if there are a plurality of wearable devices present inside the vehicle, in step S340, the vehicle according to an embodiment of the present invention transmits an acceleration request message to one of the plurality of wearable devices, , the deceleration request message can be transmitted to a plurality of wearable devices. That is, in a situation in which acceleration is required, an acceleration request message is selectively transmitted to one wearable device among a plurality of wearable devices, and in a situation in which deceleration is required, a deceleration request message is transmitted to all wearable devices present in the host vehicle.

Since the possibility of an accident is higher in a situation where deceleration is required, an embodiment of the present invention transmits a deceleration request message to a plurality of wearable devices in order to more reliably deliver the deceleration situation to the driver. Since the driver can feel vibrations in a plurality of body parts, he or she can more reliably recognize that deceleration is necessary.

Alternatively, if there are a plurality of wearable devices present inside the vehicle, in step S340, the vehicle according to the embodiment of the present invention sends acceleration and deceleration request messages to the wearable devices worn in different positions according to the type of message being transmitted. can transmit. For example, an acceleration request message may be transmitted to a wearable device worn on a wrist, and a deceleration request message may be transmitted to a glasses-type wearable device.

Since the driver can more sensitively feel the vibration generated from the face than the vibration generated from the wrist, the driver can more reliably recognize that a deceleration is required. In addition, when vibration occurs in a sensitive part of the driver in an acceleration situation, since the vibration may interfere with the driver's driving, a message may be transmitted so that the vibration occurs in a relatively insensitive part.

Meanwhile, the aforementioned apparatus and method for inducing economic driving require verification before being installed in a real vehicle, and simulation for verification may be performed. 4 is a diagram for explaining a simulation system in a V2X environment according to an embodiment of the present invention.

Referring to FIG. 4 , the simulation system according to an embodiment of the present invention includes a vehicle driving simulator 410 , a Hardware-in-the-Loop (HIL) simulator 420 and a network simulator 430 .

The vehicle driving simulator 410 generates traffic scenarios used in driving simulation. A driver control device is connected to the vehicle driving simulator 410, and vehicle control through the driver control device is reflected in a virtual vehicle in a simulation environment in real time. In addition, the vehicle driving simulator 410 outputs a virtual image of the surrounding environment of the vehicle as the virtual vehicle in the simulation environment drives through vehicle control through the driver's control device.

The vehicle driving simulator 410 transmits vehicle control information through the driver manipulation device and traffic and road information according to driving of the virtual vehicle to the HIL simulator 420 and the network simulator 430, and the HIL simulator 420 and the network A response message is received from the simulator 430 .

The HIL simulator 420 is used to develop a vehicle model, a sensor model, a driving model, and functions of these models used in simulation of an economic driving induction method. A processor in which an algorithm of an economic driving induction method operates may be attached as separate hardware to perform simulation. The HIL simulator 420 provides communication interfaces such as CAN and Ethernet used in real vehicles, and data can be exchanged with the vehicle driving simulator 410 and the network simulator 430 through these interfaces.

The network simulator 430 may generate a V2X communication protocol used for simulating an economic driving induction method and a channel model, and configure a network topology. The network simulator 430 connects a V2X communication terminal and a V2X application through a packet emulation function that supports the virtual network node used in the simulation and the real network node to send and receive packets, through which the V2X communication protocol and service can be verified. When the virtual vehicle receives messages transmitted by virtual network nodes around the virtual vehicle, the network simulator 430 transmits the received messages to the V2X communication terminal. The V2X communication terminal and the V2X application may send and receive V2X messages and the like with the HIL simulator 420 through a communication interface provided by the HIL simulator 420.

The technical contents described above may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program commands recorded on the medium may be specially designed and configured for the embodiments or may be known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler. A hardware device may be configured to act as one or more software modules to perform the operations of the embodiments and vice versa.

As described above, the present invention has been described by specific details such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Those skilled in the art in the field to which the present invention belongs can make various modifications and variations from these descriptions. Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims belong to the scope of the present invention. .

Claims (11)

Collecting at least one of road information, traffic signal information, and surrounding vehicle information using V2X communication;
determining a target speed of the host vehicle using the collected information;
Transmitting an acceleration or deceleration request message to the wearable device of the driver of the own vehicle according to the target speed and the current speed of the own vehicle; and
After the deceleration request message is transmitted, when the difference between the current speed and the target speed for a preset time is equal to or greater than a preset threshold, based on the driver's biometric information received from the wearable device, the current speed of the host vehicle Controlling the speed to the target speed,
Transmitting the acceleration or deceleration request message
When there are a plurality of wearable devices, transmitting the acceleration request message to one wearable device among the plurality, and transmitting the deceleration request message to the plurality of wearable devices
A method for inducing economic driving using V2X communication.
According to claim 1,
The road information transmitted from the base station includes speed limit information of the road on which the host vehicle travels,
The surrounding vehicle information transmitted from the base station or the surrounding vehicle includes state information of vehicles located around the host vehicle.
A method for inducing economic driving using V2X communication.
According to claim 1,
The step of determining the target speed of the host vehicle is
When the surrounding vehicles and traffic lights do not exist within a preset radius from the own vehicle, determining the speed limit of the road on which the own vehicle travels as the target speed
A method for inducing economic driving using V2X communication.
According to claim 1,
The step of determining the target speed of the host vehicle is
When there is a surrounding vehicle located in front of the own vehicle within a preset distance from the own vehicle, determining the average speed of the surrounding vehicle located in front as the target speed
A method for inducing economic driving using V2X communication.
According to claim 1,
The step of determining the target speed of the host vehicle is
When a traffic light exists within a preset distance from the host vehicle, determining whether the host vehicle can pass through the section where the traffic light is installed using the traffic signal information and the current speed of the host vehicle; and
Determining the target speed according to the determination result
Economical driving induction method using V2X communication comprising a.
According to claim 1,
The step of determining the target speed of the host vehicle is
Determining the target speed to follow the surrounding vehicle located in front when the expected collision time of the host vehicle with a nearby vehicle located in front of the host vehicle is within a preset threshold time
A method for inducing economic driving using V2X communication.
delete According to claim 1,
The step of controlling the current speed of the host vehicle to the target speed
Controlling the current speed of the own vehicle to the target speed when the driver of the own vehicle is in a drowsy state or in a state in which disease symptoms have occurred
A method for inducing economic driving using V2X communication.
Determining whether a wearable device of the driver of the own vehicle exists inside the vehicle;
Collecting at least one of road information, traffic signal information, and surrounding vehicle information using V2X communication;
determining a target speed of the host vehicle using the collected information; and
Controlling the current speed to the target speed or transmitting an acceleration or deceleration request message to the wearable device according to the determination result, the target speed and the current speed of the host vehicle,
Transmitting the acceleration or deceleration request message to the wearable device
When the driver wears a plurality of wearable devices at different positions, each of the acceleration and deceleration request messages is transmitted to the wearable device worn at different positions according to the type of the transmitted message;
As a result of the determination, when the wearable device exists inside the vehicle, an acceleration or deceleration request message is transmitted to the wearable device, and when the wearable device does not exist inside the vehicle, the current speed of the vehicle is determined as the target controlled by speed
A method for inducing economic driving using V2X communication.

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