WO2021033813A1

WO2021033813A1 - Safe driving assistance device and assistance method

Info

Publication number: WO2021033813A1
Application number: PCT/KR2019/010702
Authority: WO
Inventors: 강세진; 김진욱; 김재형; 이두양; 강봉오
Original assignee: 엠텍비젼 주식회사
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2021-02-25

Abstract

The present invention relates to a safe driving assistance device and an assistance method, the safe driving assistance device comprising: a driving situation detection unit which generates driving situation information by detecting a driving situation of a vehicle; a driver detection unit which generates driver information by detecting a driver; a control unit which determines a danger state of the driving situation through the driving situation information and a driver state through the driver information and generates warning information according to the dangerous state and the driver state; and a warning unit which warns the driver according to the warning information.

Description

Safe driving aids and assistive methods

The present invention relates to a safe driving assist device and an assist method.

Recently, with the development of sensor technology and communication technology, various safety assist devices for safe driving using the same have been applied to vehicles. For example, as auxiliary devices, there are a device that detects an object in front to prevent a collision while driving, and notifies the driver of a lane departure, a device that detects the departure of the vehicle ahead and informs the driver.

As a related art, there is Korean Patent Publication No. 0170857 (registered on October 16, 1998).

In the prior art, since a warning is generated by detecting a collision risk using a sensor regardless of the driver's condition, the driver becomes insensitive to the warning. As a result, the prior art has a problem in that it does not provide practical assistance to the driver when a dangerous situation occurs.

The technical problem to be solved by the present invention is to provide a safe driving assist device and an assist method for generating a warning according to a driver's condition.

In order to solve the technical problem as described above, a driving situation detection unit for generating driving situation information by detecting a driving situation of the vehicle; A driver detection unit that detects a driver and generates driver information; A control unit configured to determine a dangerous state of a driving situation through the driving situation information and a driver state through the driver information, and generate warning information according to the dangerous state and driver state; And a warning unit for warning the driver according to the warning information.

Here, the driving situation information may be at least one of collision warning information, lane departure information, and front vehicle departure information.

Here, the driver information may be at least one of information about a driver's gaze direction, information about a driver's eyes closing, and information about a driver's face direction.

Here, the risk state may be any one of a high level risk, a medium level risk, and a low level risk.

Here, the warning unit may warn the driver when the warning information is at a dangerous level.

Here, when the driver's state is an abnormal driving state, the control unit may generate the warning information according to the danger state.

Here, the control unit may generate warning information irrespective of the driver's state when the danger state is a high level of danger.

According to another preferred aspect of the present invention, there is provided a method of assisting a safe driving by a safe driving assistance device, the method comprising: generating driving situation information by detecting a driving situation of a vehicle by a driving situation detecting unit; Generating driver information by detecting a driver by a driver detection unit; Determining, by a control unit, a dangerous state of a driving situation through the driving situation information and a driver state through the driver information, and generating warning information according to the dangerous state and driver state; And a warning unit warning the driver according to the warning information.

According to the present invention, a warning is generated only when the driver is in an abnormal driving state or a vehicle is in a dangerous state by detecting a driver's state, thereby helping the driver.

1 is a block diagram of a device for assisting safe driving according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining information on a driver's gaze direction, information on a driver's eyes closed, and information on a driver's face direction according to an embodiment of the present invention.

FIG. 3 is a table showing that, as an embodiment of the present invention, a controller identifies a driver's state according to driving situation information.

4 is a diagram for explaining a dangerous state according to driving situation information according to an embodiment of the present invention.

5 is a table for explaining warning information generated according to a dangerous state and a driver's state as an embodiment according to the present invention.

6 is a flowchart of a method for assisting a safe driving by a safe driving assist device according to another 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 a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the corresponding elements are not limited by these terms. These terms are only used for the purpose of distinguishing one component from another.

When an element is referred to as being'connected' or'connected' to another element, it may be directly connected to or connected to the other element, but other elements may exist in the middle. It should be understood that there is. On the other hand, when a component is referred to as being'directly connected' or'directly connected' to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as'include' or'have' are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Referring to FIG. 1, the safe driving assistance device 100 includes a driving situation detection unit 110, a driver detection unit 120, a control unit 130, and a warning unit 140.

The driving situation detection unit 110 detects a driving situation required by the driver in the process of driving the vehicle, generates driving situation information, and transmits the driving situation information to the control unit 130 by wire or wirelessly. For example, the driving situation detection unit 110 detects an object in front to prevent a collision while driving, and the collision detection unit 112 notifies the driver, and the lane departure detection unit 114 notifies the driver of lane departure. , It may include a front vehicle departure detection unit 116 that detects the departure of the vehicle ahead and informs the driver. Here, the driving situation information may be at least one of collision warning information, lane departure information, and front vehicle departure information.

The driver detection unit 120 detects the driver of the vehicle, generates driver information, and transmits it to the controller 130 by wire or wirelessly. For example, the driver information refers to information that serves as a criterion for determining whether the driver is driving the vehicle normally, such as information on the driver's gaze direction, information on the driver's eyes closed, and information on the driver's face.

The control unit 130 determines the dangerous state and the driver state of the driving situation through the driving situation information transmitted from the driving situation detection unit 110 and the driver information transmitted from the driver detection unit 120, and determines the dangerous state and the driver state. Accordingly, warning information is generated and transmitted to the warning unit 140.

The warning unit 140 warns the driver according to the warning information transmitted through the control unit 130. Here, the warning may be at least one of a warning sound, a warning light, and a warning message, and any other means of warning the driver may be used.

The safe driving assistance device 100 may be installed in a vehicle in which the driving situation detection unit 110, the driver detection unit 120, the control unit 130, and the warning unit 140 are configured as one device or different devices. . For example, the driving situation detection unit 110 may utilize a known black box, and the driver detection unit 120, the control unit 130, and the warning unit 140 may be configured as separate driver status detection devices. .

FIG. 2 is a diagram for explaining information about a driver's gaze direction, information about a driver's eyes closed, and information about a driver's face direction among driver information according to an embodiment of the present invention.

Specifically, in FIG. 2, FIG. 2(a) shows an area in the direction of the driver's gaze. Referring to FIG. 2(a), when the driver's gaze direction region is divided into a square 210, a side mirror 220, a guitar 230, and a rearview mirror 240, the driver detection unit 120 The driver's gaze direction information can be generated by detecting which area the driver's gaze direction is in. The division of the driver's gaze direction region may vary according to implementation examples, and the driver's gaze direction region may be stored in advance in the driver detection unit 120 or may be defined by the driver.

In FIG. 2, FIG. 2(b) shows the degree of the driver's eyes closed. Referring to FIG. 2(b), the driver's eyes are closed by dividing and setting the driver's eyes closed 250 and eyes closed 260, so that the driver's eyes are closed. By detecting the driver's eyes closed information can be generated. The degree of the driver's eyes closed may vary according to implementation examples, and the degree of the driver's eyes closed may be stored in the driver detection unit 120 or may be defined by the driver.

In FIG. 2, FIG. 2(c) shows the driver's face direction. Referring to FIG. 2C, the driver detection unit 120 may detect the driver's face direction and generate the driver's face direction information. For example, the driver's face direction information can be generated by detecting a state in which the driver's face is in the front direction 270 and the driver's face direction is in the side direction 280, and when the driver's face direction is in a different direction It will be apparent to a person skilled in the art that it can also be created.

FIG. 3 is a table showing that, as an embodiment of the present invention, a controller identifies a driver's state according to driving situation information. When the driver's face direction is front, side, or other, when the degree of eye-close is open or closed, and the gaze direction is front, side mirror, rearview mirror/etc. Taking into account the driver's condition.

Specifically, in FIG. 3, FIG. 3(a) is a diagram showing the identification of a driver's state when the driving situation information is collision warning information or departure information of a vehicle ahead. Referring to FIG. 3(a), the controller 130 determines the driver's state as a normal driving state when the driver's face direction is front, the driver's eyes are open, and the driver's gaze direction is forward. To identify it as an abnormal driving state.

In FIG. 3, FIG. 3(b) is a diagram illustrating the identification of a driver's state when the driving situation information is lane departure information. Referring to FIG. 3B, the controller 130 determines the driver's state as a normal driving state when the driver's face is in front, the driver's eyes are open, and the driver's gaze direction is a front or side mirror. Further, the controller 130 determines the driver's state as a normal driving state when the driver's face direction is the side, the driver's eyes are open, and the driver's gaze direction is the side mirror. In other cases, the controller 130 determines the driver's state as an abnormal driving state.

Specifically, in FIG. 4, FIG. 4(a) shows a dangerous state of collision warning information. Referring to FIG. 4(a), the collision detection unit 114 generates collision warning information based on the distance and speed between the vehicle 410 and the counterpart vehicle 420 driven by the driver, and transmits the collision warning information to the controller 130. send. The control unit 130 is based on the collision warning information, depending on the distance between the vehicle 410 and the counterpart vehicle 420 or the predicted collision time, the high level risk 460, the intermediate level risk 450, the low level risk 440 ) To identify the danger status.

In FIG. 4, FIG. 4(b) shows a dangerous state of lane departure information. Referring to FIG. 4B, the lane departure detection unit 112 generates lane departure information based on the detected departure distance of the lane 430 of the vehicle 410 and transmits it to the control unit 130. Based on the lane departure information, the control unit 130 classifies the dangerous state into a high level risk 460, a medium level risk 450, and a low level risk 440 according to the departure distance of the lane 430 of the vehicle 410. To grasp.

In FIG. 4, FIG. 4(c) shows a dangerous state of the departure information of the preceding vehicle. Referring to FIG. 4C, the front vehicle departure detection unit 1160 generates the front vehicle departure information based on the detected distance to the vehicle ahead 420 and the departure time of the vehicle ahead 420 and transmits it to the controller 130. The control unit 130 divides the risk into a high level risk 460, a medium level risk 450, and a low level risk 440 according to the distance from the car ahead 420 or the departure time of the car ahead 420 based on the departure information of the car ahead. Know the condition.

In FIG. 5, FIG. 5(a) shows warning information generated according to the danger state of the collision warning information and the danger state of the front vehicle departure information and the driver state. Referring to FIG. 5A, when the driver's state is normal, the controller 130 does not generate warning information for low-level risk and medium-level risk, and generates warning information only in case of high-level risk.

When the driver's state is abnormal driving, the controller 130 generates different warning information according to the danger state. For example, in the case of a high-level risk, the control unit 130 displays the risk level-strong warning information, in the case of a medium level risk, the risk level-medium warning information, and in the case of a low level risk, the risk level-weak warning information Generate.

In FIG. 5, FIG. 5(b) shows warning information generated according to a dangerous state of lane departure information and a driver's state. Referring to FIG. 5B, when the driver's state is a normal driving, the controller 130 does not generate warning information because it recognizes that a normal lane 430 has changed.

When the driver's state is abnormal, the controller 130 generates different warning information according to the danger state.

The control unit 130 transmits the warning information to the warning unit 140 only when it corresponds to the warning information.

Meanwhile, the warning unit 140 may change the warning method according to the warning information transmitted through the control unit 130. For example, if the warning information is Danger Level-Weak Warning, only one of warning sound, warning light, and warning message is warned, Danger Level-Medium warning warning only two of warning sound, warning light, and warning message, Danger Level-Strong Warning The warning sound, warning light, and warning message can be used, or the sound and brightness of the warning sound and warning light can be changed.

Meanwhile, in FIGS. 4 and 5, it has been described that the risk state is classified into a high level risk, a medium level risk, and a low level risk.

Referring to FIG. 6, in step S610, the driving situation detection unit 110 detects the driving situation of the vehicle, generates driving situation information, and transmits the driving situation information to the control unit 130.

In step S620, the driver detection unit 120 detects the driver, generates driver information, and transmits the driver information to the controller 130.

In step S630, the control unit 130 identifies the dangerous state and the driver state of the driving situation through the driving situation information and driver information transmitted from the driving situation detection unit 110 and the driver detection unit 120, and Generates warning information according to.

In step S640, the control unit 130 determines whether it is a risk level according to the warning information, and if it is a risk level, proceeds to step S650, and if not, proceeds to steps S610 to S630.

In step S650, the control unit 130 transmits the warning information to the warning unit 140, and the warning unit 140 warns the driver according to the warning information received from the control unit 130.

Although the embodiments according to the present invention have been described above, these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent range of embodiments are possible therefrom. . Therefore, the true technical protection scope of the present invention should be determined by the following claims.

[Explanation of code]

110: driving situation detection unit 120: driver detection unit

130: control unit 140: warning unit

Claims

A driving situation detecting unit that detects a driving situation of the vehicle and generates driving situation information;

A driver detection unit that detects a driver and generates driver information;

A control unit configured to determine a dangerous state of a driving situation through the driving situation information and a driver state through the driver information, and generate warning information according to the dangerous state and driver state; And

Including; a warning unit for warning the driver according to the warning information

Safe driving assistance device, characterized in that.
The method of claim 1,

The driving situation information is at least one of collision warning information, lane departure information, and front vehicle departure information.

Safe driving assistance device, characterized in that.
The method of claim 1,

The driver information is at least one of information on a driver's gaze direction, information on a driver's eyes closing, and information on a driver's face

Safe driving assistance device, characterized in that.
The method of claim 1,

The risk status is one of high risk, medium risk, and low risk.

Safe driving assistance device, characterized in that.
The method according to any one of claims 1 to 4,

The warning unit warns the driver when the warning information is at a dangerous level.

Safe driving assistance device, characterized in that.
The method according to any one of claims 1 to 4,

The control unit generates the warning information according to the dangerous state when the driver state is an abnormal driving state

Safe driving assistance device, characterized in that.
The method according to any one of claims 1 to 4,

The control unit generates warning information irrespective of the driver's state when the danger state is a high level of danger.

Safe driving assistance device, characterized in that.
In a method for the safe driving assistance device to assist safe driving,

Generating driving situation information by detecting a driving situation of the vehicle by a driving situation detecting unit;

Generating driver information by detecting a driver by a driver detection unit;

Determining, by a control unit, a dangerous state of a driving situation through the driving situation information and a driver state through the driver information, and generating warning information according to the dangerous state and driver state; And

Including; a warning unit to warn the driver according to the warning information;

Safe driving assistance method, characterized in that.