KR102366874B1 - Back warning apparatus for older driver and method thereof - Google Patents

Abstract

Disclosed are a rear warning device and method for an elderly driver. According to an aspect of the present invention, a rear warning device for an elderly driver detects driving state information or rear collision warning information of a rear vehicle approaching and driving from the rear of the vehicle. The sensing unit outputs a rear collision warning signal based on the driving state information or rear collision warning information of the rear vehicle, and learns the driver's reaction information for each situation according to the output of the rear collision warning signal, and the learned reaction for each situation and a control unit configured to set an output timing of the rear collision warning signal for each situation of the driver based on the information, and an output unit configured to output a rear collision warning signal according to the control of the control unit.

Description

BACK WARNING APPARATUS FOR OLDER DRIVER AND METHOD THEREOF

The present invention relates to a rearward warning device and method for an elderly driver, and more particularly, to an elderly driver who adaptively controls an alarm signal output timing according to the driver in consideration of the driver's response to a warning signal. It relates to a rear alarm device and method for

In general, older drivers have lower physical abilities, such as muscle strength, eyesight, and hearing, and cognitive abilities, such as short-term memory and spatial perception, compared to general drivers. In particular, elderly drivers often suffer from sudden hearing loss due to age-related deafness, so that they cannot hear well. The hearing loss of the elderly driver is bound to follow the limitations of the elderly driver in driving a vehicle. In addition, older drivers have reduced visual acuity and cognitive ability to judge signs and traffic lights, and their ability to cope with various unexpected situations is inevitably reduced. According to statistics, it is investigated that the response time of elderly (65 years or older) drivers is 20-30% slower than that of young adults.

Meanwhile, as we enter an aging society, the share of traffic accidents among elderly drivers is increasing every year. In response, the global automaker is expanding R&D on options for elderly drivers and advanced driver assistance systems (ADAS) to provide electronically controlled brake systems (EBS) and forward collision warning systems (FCW) for elderly drivers with limited reaction behavior. ) and so on. In particular, as the intelligence of automobiles progresses to a higher level, the need for research on the warning sound response characteristics of elderly drivers is further increasing, given that the installation of ADAS assisting drivers is increasing. ADAS includes adaptive cruise control (ACC) that warns when a forward collision situation occurs and LDWS (lane departure warning system) that warns when a lane departure situation occurs. are providing

However, the warning sound of advanced safety systems such as ACC and LDWS is designed without considering the hearing loss of the elderly driver when designing, and as a result, the elderly driver can It may happen that you do not hear the warning sound and do not respond appropriately.

Accordingly, in consideration of the hearing threshold of the elderly driver and the reaction time to the warning sound, there is a need to develop a technology capable of notifying a rear-end collision warning at an appropriate time.

As a prior art related to the present invention, there is Republic of Korea Patent Publication No. 1262555 (title of the invention: collision warning device and method having a false alarm prevention function).

The present invention has been devised to improve the above problems, and an object of the present invention is to provide an elderly driver who adaptively controls an alarm signal output timing according to the driver in consideration of the driver's response to an alarm signal. It is to provide a rear alarm device and method for

The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and another problem(s) not mentioned will be clearly understood by those skilled in the art from the following description.

A rear warning device for an elderly driver according to an aspect of the present invention includes a sensing unit that detects driving state information or rear collision warning information of a rear vehicle approaching and driving from the rear of the vehicle, driving state information of the rear vehicle or rear collision Outputs a rear collision warning signal based on the warning information, learns reaction information for each situation of the driver according to the output of the rear collision warning signal, and a rear collision warning signal for each situation of the driver based on the learned reaction information for each situation It includes a control unit for setting an output time of the , and an output unit for outputting a rear collision warning signal according to the control of the control unit.

In the present invention, the control unit may include a driver recognition unit for recognizing the driver, classifying the reaction information for each situation by the recognized driver, and generating a rear collision warning signal based on driving state information or rear collision warning information of the rear vehicle. A learning unit that outputs and learns reaction information for each situation of the driver according to the output of the rear collision warning signal; It may include an output time setting unit.

In the present invention, when the driving state information or rear collision warning information of the rear vehicle sensed in real time is received, the control unit acquires an output time of the rear collision warning signal corresponding to the situation from the warning signal output time setting unit, It may further include a warning signal output control unit for outputting the rear collision warning signal at the time of outputting the obtained rear collision warning signal.

In the present invention, the warning signal output time setting unit may differently set the output method of the rear collision warning signal for each situation based on the learned reaction information for each situation.

In the present invention, the reaction information may be manipulation information of at least one of an accelerator pedal, a brake pedal, and a steering wheel.

According to an aspect of the present invention, there is provided a method for rearward warning for an elderly driver according to the step of recognizing a driver driving a vehicle by a control unit, and outputting a rear collision warning signal accumulated during a predetermined period of time while the driver drives the vehicle, by the control unit and learning reaction information for each situation of the driver, and setting an output timing of the rear collision warning signal for each situation of the driver based on the learned reaction information for each situation.

In the present invention, the rear collision warning method for an elderly driver includes: when driving state information or rear collision warning information of a rear vehicle sensed in real time is received, the control unit acquires an output time of a rear collision warning signal set in the corresponding situation, The method may further include outputting a rear collision warning signal at the time of outputting the obtained rear collision warning signal.

In the step of setting the output timing of the rear collision warning signal for each situation of the driver of the present invention, the control unit may differently set the output method of the rear collision warning signal for each situation based on the learned reaction information for each situation.

In the present invention, the reaction information may be manipulation information of at least one of an accelerator pedal, a brake pedal, and a steering wheel.

According to the present invention, it learns the cognitive/response ability of an elderly driver with poor cognitive/reaction ability (hearing, vision, motor nerves, etc.) can be prevented

On the other hand, the effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within the range obvious to those skilled in the art from the description below.

1 is an exemplary view for explaining an operation of a rear warning device for an elderly driver according to an embodiment of the present invention.
2 is a block diagram schematically illustrating a rear warning device for an elderly driver according to an embodiment of the present invention.
3 is a block diagram showing in detail the function of the control unit shown in FIG.
4 is a flowchart illustrating a rear collision warning method for an elderly driver according to an embodiment of the present invention.

Hereinafter, a rear warning device and method for an elderly driver according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the 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 the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Further, implementations described herein may be implemented as, for example, a method or process, an apparatus, a software program, a data stream, or a signal. Although discussed only in the context of a single form of implementation (eg, discussed only as a method), implementations of the discussed features may also be implemented in other forms (eg, as an apparatus or program). The apparatus may be implemented in suitable hardware, software and firmware, and the like. A method may be implemented in an apparatus such as, for example, a processor, which generally refers to a computer, a microprocessor, a processing device, including an integrated circuit or programmable logic device, and the like. Processors also include communication devices such as computers, cell phones, portable/personal digital assistants (“PDA”) and other devices that facilitate communication of information between end-users.

1 is an exemplary view for explaining the operation of a rear warning device for an elderly driver according to an embodiment of the present invention.

Referring to FIG. 1 , in general, the rear collision warning device outputs a rear collision warning signal at a rear collision warning notification point (a) set regardless of the driver's cognitive/reactive ability. However, if a rear-end collision warning sound is generated at point a for an elderly driver with poor cognitive/reactive ability (hearing, vision, motor nerves, etc.) there is. Therefore, it is necessary to generate a warning sound suitable for the elderly driver at an appropriate time in consideration of the hearing threshold of the elderly driver and the response time to the warning sound.

Accordingly, the rear warning device according to the present invention learns the response to the warning sound of an elderly driver with poor cognitive/reactive ability (hearing, visual, motor nerves, etc.), and based on the learning result, a rear collision warning suitable for the elderly driver By selecting the notification point (b), it is possible to notify in advance of a dangerous situation for a rear collision at the selected rear collision warning notification point (b). As such, the rear warning device may be a device capable of preventing accidents that may occur through sudden actions by collecting driving state information of the own vehicle and the rear vehicle and transmitting an alarm to the driver. At this time, the driving state information includes a sensor that monitors the rear blind spot detection zone (BSD) of the vehicle, a sensor that monitors the rear lane change assist zone (LCA), and a rear pre-crash area (RPC). Zone) can be collected through a sensor, etc. Alternatively, the driving state information may include information received from a device outside the vehicle, such as a navigation device or a V2X communication device in the vehicle, or a GPS module. That is, the driving state information may be interpreted to include both information generated by the vehicle itself or information generated and transmitted outside the vehicle.

A detailed description of the rear warning device will be referred to FIG. 2 .

FIG. 2 is a block diagram schematically illustrating a rear warning device for an elderly driver according to an embodiment of the present invention, and FIG. 3 is a block diagram illustrating in detail the function of the control unit 140 illustrated in FIG. 2 .

Referring to FIG. 2 , the rear warning device 100 for an elderly driver according to an embodiment of the present invention includes a communication unit 110 , a detection unit 120 , an output unit 130 , and a control unit 140 .

The communication unit 110 includes various sensors including a GPS mounted on the vehicle, an acceleration sensor, etc. or a lane departure prevention and control device (LDWS &LKAS; Lane Departure Warning system and Lane Keeping Assist System), a smart cruise control (SCC; Smart Cruise). Control), and may transmit information detected from a driving assistance system including a Smart Parking Assistant System (SPAS) to the sensing unit 120 . At this time, the communication unit 110 includes the Internet, ISDN (Integrated Services Digital Network), ADSL (Asymmetric Digital Subscriber Line), LAN (Local Area Network), Ethernet, CAN (Controller Area Network), TCP/IP-based communication network, optical communication network , CDMA, wireless communication networks including mobile communication networks such as WCDMA, local area networks such as Zigbee, Bluetooth (Bluetooth), CAN communication, V2X communication, etc. may be configured.

The sensing unit 120 detects driving state information of a rear vehicle approaching and driving from the rear of the vehicle. Here, the driving state information of the rear vehicle may include the speed and distance of the rear vehicle. Specifically, the sensing unit 120 performs a function of detecting the driving environment for the rear region of the vehicle, and includes a camera and a radar sensor module, and may further include at least one or more of an ultrasonic sensor module and an infrared sensor module. but may not be limited thereto. In addition, the detection unit 120 may photograph the rear area of the vehicle by mounting a camera device such as a rear view camera on the left and right side mirrors of the vehicle, and an Around View Monitoring System (AVM) The driving status information of the rear vehicle can be detected from the camera of the View Monitoring System).

In addition, the sensing unit 120 also performs a function of detecting driving state information of the own vehicle, and the driving state information of the own vehicle may include driving speed, driving direction, and location information of the own vehicle, which is a communication unit GPS, acceleration sensor or lane departure prevention and control system (LDWS &LKAS; Lane Departure Warning system and Lane Keeping Assist System), Smart Cruise Control (SCC), parking assistance system mounted on the vehicle through 110 It may be received from a driving assistance system including (SPAS; Smart Parking Assistant System) and the like.

In addition, the sensing unit 120 performs a function of identifying a driver driving a vehicle, and detects driver identification information through a biometric information recognition device such as a fingerprint sensor, a face recognition sensor, an iris recognition sensor, etc. installed in the vehicle. can do. That is, the sensing unit 120 may include various sensors mounted on the vehicle, or may receive information sensed from various sensors and the driving support system through the communication unit 110 .

Also, the sensing unit 120 may receive rear collision warning information from the rear vehicle. In this case, the rear collision warning information is information notifying that the rear vehicle is likely to collide with the front vehicle (own vehicle), and may be information received from the rear vehicle through a V2X communication device in the vehicle.

The output unit 130 outputs a rear collision warning signal under the control of the control unit 140 . In this case, the output unit 130 may be implemented as at least one device among a voice module, a vibration module, and an image module to output an alarm signal. For example, a speaker that outputs a warning alarm to warn of the risk of an accident, a warning lamp that is installed on the instrument panel of a vehicle and turns on or off, and a head-up display device that displays a warning image or text on the windshield of the vehicle , a display device equipped with functions such as navigation that displays own vehicle and other vehicles on the screen, and a haptic module that is installed on a vehicle's steering wheel or seat, or accelerator pedal to generate vibration. can

The control unit 140 outputs a rear collision warning signal based on the driving state information or rear collision warning information of the own vehicle and the rear vehicle received from the sensing unit 120, and the driver's situational response according to the rear collision warning signal output The information is learned, and the output timing of the rear collision warning signal for each situation of the driver is set based on the learned reaction information for each situation. Here, the rear collision warning signal may be a prior warning for recognizing a dangerous situation for a rear vehicle collision to the driver. The driver's reaction information is that the driver accelerates or brakes the vehicle or changes the traveling direction of the vehicle, and at least two of acceleration, braking, and changing direction may be simultaneously performed. That is, in the driver response information, acceleration and change of the traveling direction may be performed simultaneously, or braking and change of the traveling direction may be performed at the same time.

As shown in FIG. 3 , the control unit 140 includes a driver recognition unit 142 , a learning unit 144 , an alarm signal output time setting unit 146 , and an alarm signal output control unit 148 .

The driver recognition unit 142 recognizes a driver currently driving the vehicle. In this case, the driver recognition unit 142 may recognize the driver of the vehicle in various ways.

For example, the driver recognition unit 142 may recognize or register the driver using the driver identification information received through the sensing unit 120 . In addition, the driver recognition unit 142 may recognize a driver according to a vehicle smart key or FOB key owned by the driver, a vehicle remote control, or recognize a driver according to a vehicle seat setting for each driver.

The learning unit 144 classifies the reaction information for each situation for each driver recognized by the driver recognition unit 142, and outputs a rear collision warning signal based on driving state information or rear collision warning information of the own vehicle and the rear vehicle, It learns the driver's reaction information for each situation according to the output of the rear collision warning signal. In this case, the learning unit 144 is a series of microprocessors or hardware including one or more microprocessors operating according to a preset program for performing the operation of the rear warning device 100 according to the driver's reaction information for each situation. It can be formed by command.

Hereinafter, the operation of the learning unit 144 will be described in detail.

First, a method for the learning unit 144 to learn the driver's reaction information for each situation by using the driving state information will be described. In this case, the learning unit 144 learns the driver's reaction information according to the output of the rear collision warning signal accumulated for a predetermined period of time while the driver drives the vehicle. That is, the learning unit 144 calculates the distance between the own vehicle and the rear vehicle by using the driving state information, and outputs the rear collision warning signal when the calculated distance is the output time of the rear collision warning signal, and the rear collision warning signal It is possible to obtain the driver's reaction information according to the output. In this case, the driver's reaction information may be accumulated motion information such as a turn signal operation, a pedal operation detection sensor, and a multi-function operation detection sensor mounted on the vehicle. That is, the driver's reaction information may be whether the driver manipulates at least one of an accelerator pedal, a brake pedal, and a steering wheel. Accordingly, the learning unit 144 may acquire the driver's reaction information through CAN communication. Then, the learning unit 144 may learn the driver's reaction information according to the output of the rear collision warning signal.

Next, a method for the learning unit 144 to learn the driver's reaction information for each situation by using the rear collision warning information will be described. In this case, when the rear collision warning information is received, the learning unit 144 outputs a rear collision warning signal and learns reaction information for each situation of the driver according to the rear collision warning signal output. For example, if the rear vehicle is traveling at a high speed and there is a possibility of a collision with the own vehicle in front, the rear vehicle may use V2X to transmit rear collision warning information to the own vehicle and make an abrupt stop. Then, the host vehicle may output a rear collision warning signal indicating that there is a possibility of collision with the rear vehicle. In this case, the driver of the own vehicle may have a reaction such as not recognizing the rear collision warning signal due to the sudden stop of the rear vehicle, or collide with a neighboring vehicle by bending the steering wheel. Accordingly, the learning unit 144 learns the driver's reaction information according to the accumulated rear collision warning signal output, and selects the output timing of the rear collision warning signal for each situation most suitable for the driver by using the learned reaction information for each situation. there is.

Learning of the learning unit 144 may be performed by artificial intelligence technology such as deep learning.

The warning signal output timing setting unit 146 sets the output timing of the rear collision warning signal for each situation of the driver based on the situation-specific reaction information learned by the learning unit 144 . That is, the warning signal output time setting unit 146 may select an output time of the rear collision warning signal for each situation most suitable for the driver by using the learned reaction information for each situation.

For example, when a rear vehicle collision is expected to occur and the rear vehicle is located at point a, it is assumed that as a result of outputting a rear collision warning signal, the driver performs a reaction of turning the steering wheel. If a collision with the left vehicle occurs due to the driver's reaction, it can be seen that point a is not appropriate as the output timing of the rear collision warning signal. Accordingly, the warning signal output time setting unit 146 may set the point b, which is farther away from the own vehicle than the point a, as the rear collision warning signal output time.

In addition, the warning signal output time setting unit 146 may differently set the output method of the rear collision warning signal for each situation based on the reaction information for each situation learned by the learning unit 144 . For example, if the reaction information for each situation is an appropriate reaction, the rear collision warning signal is output at the corresponding output time. You can change the notification method of

When the driving state information or rear collision warning information of the rear vehicle sensed in real time is received, the warning signal output control unit 148 determines the output time of the rear collision warning signal corresponding to the situation from the warning signal output time setting unit 146 and control so that the rear collision warning signal is output at the time of outputting the acquired rear collision warning signal.

Meanwhile, the driver recognition unit 142 , the learning unit 144 , the warning signal output time setting unit 146 , and the warning signal output control unit 148 may be implemented by a processor required to execute a program on the computing device, respectively. . As such, the driver recognition unit 142 , the learning unit 144 , the warning signal output time setting unit 146 , and the warning signal output control unit 148 may be implemented by physically independent components, and within one processor. It may be implemented in a functionally distinct form.

The control unit 140 is a component for controlling the operation of the rear warning device 100 and may include at least one arithmetic unit, wherein the arithmetic unit is a general-purpose central processing unit (CPU), implemented appropriately for a specific purpose. It may be a programmable device device (CPLD, FPGA), an application specific integrated circuit (ASIC), or a microcontroller chip.

The rear collision warning device 100 configured as described above outputs a rear collision warning signal based on driving state information of the rear vehicle or a rear collision warning, learns the driver's reaction for each situation according to the rear collision warning signal output, and learns the learned The output timing of the rear collision warning signal for each situation of the driver may be changed based on the reaction information for each situation. In this way, the rear warning device 100 can learn the driver's cognitive ability by learning the driver's situational response, and by generating an alert signal in advance based on the learned information, one , can prevent secondary accidents.

4 is a flowchart illustrating a rear collision warning method for an elderly driver according to an embodiment of the present invention.

Referring to FIG. 4 , the rear warning device 100 recognizes the driver driving the vehicle ( S410 ), and learns the driver's reaction to each situation according to the output of the rear collision warning signal accumulated for a certain period of time while the driver drives the vehicle. do (S420). That is, the rear collision warning device 100 outputs a rear collision warning signal based on at least one of the driving state information and the rear collision warning information of the rear vehicle, and learns the driver's situational reaction according to the rear collision warning signal output. Thereafter, the rear warning device 100 may set an output timing of the rear collision warning signal for each situation of the driver based on the learned reaction information for each situation. For example, if the reaction information for each situation is an appropriate response, the output timing is maintained as it is, if the response is not appropriate, the output timing set for the situation can be increased or decreased, and the notification method such as sound, voice, video, etc. can be changed. can

After performing step S420, the rear warning device 100 receives the real-time driving state information of the vehicle and the driving state information of the rear vehicle (S430), and determines whether an alarm situation has occurred using the received driving state information (S440) , In this case, the rear warning device 100 may calculate a distance between the host vehicle and the rear vehicle, and determine whether a collision is possible based on the calculated distance. In addition, the rear warning device 100 is configured to control the vehicle and the rear of the vehicle based on the speed of the own vehicle, the speed of the rear vehicle, the acceleration/deceleration of the own vehicle, the acceleration/deceleration of the rear vehicle, and the distance between the own vehicle and the rear vehicle. It is also possible to determine whether the vehicle is likely to collide.

As a result of the determination in step S440, if it is determined that an alarm situation has occurred, the rear warning device 100 outputs a rear collision warning signal at the time of outputting a warning signal corresponding to the corresponding situation (S450).

As described above, the rear warning device and method for an elderly driver according to an embodiment of the present invention learns the cognitive/response ability of an elderly driver with poor cognitive/reaction abilities (hearing, vision, motor nerves, etc.) It is possible to prevent primary and secondary accidents that may occur through sudden actions by notifying the alarm.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely an example, and those skilled in the art to which various modifications and equivalent other embodiments are possible. will understand

Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

100: rear alarm device
110: communication department
120: sensing unit
130: output unit
140: control unit
142: driver recognition unit
144: study department
146: alarm signal output time setting unit
148: alarm signal output control unit

Claims (9)

a sensing unit for detecting driving state information or rear collision warning information of a rear vehicle approaching and driving from the rear of the vehicle;
Outputs a rear collision warning signal based on the driving state information or rear collision warning information of the rear vehicle, and the rear collision warning signal of an elderly driver whose cognitive/reactive ability of at least one of auditory, visual and motor nerves falls below a reference value a control unit configured to accumulate and learn reaction information for each situation for output of the vehicle for a certain period of time, and to set an output time point of the rear collision warning signal for each situation of the driver based on the learned reaction information for each situation; and
An output unit for outputting a rear collision warning signal under the control of the control unit,
There is a possibility that the rear vehicle collides with the vehicle in front, so that the rear vehicle stops suddenly after transmitting the rear collision warning information to the vehicle, and the rear vehicle is located at the first point due to the sudden stop of the rear vehicle. In the case of outputting the rear collision warning signal when
The control unit may include a reaction in which the elderly driver does not recognize the rear collision warning signal or a reaction in which the vehicle collides with a neighboring vehicle by bending a steering wheel, a reaction in which the elderly driver brakes by operating a brake pedal, and a reaction in which the vehicle is accelerated by operation of an accelerator pedal learning the reaction information of at least one of the elderly drivers,
When the learned reaction information is a reaction in which the elderly driver bends the steering wheel and collides with a vehicle next to it, it is determined that the first point is not appropriate as an output time of the rear collision warning signal, so that the rear vehicle is higher than the first point A rear-end warning device for an elderly driver, characterized in that a second point further away from the vehicle is set as the output point of the rear-end collision warning signal.
The method of claim 1,
The control unit is
a driver recognition unit for recognizing the elderly driver;
Classifying the recognized reaction information for each situation of the elderly driver, outputting a rear collision warning signal based on the driving state information of the rear vehicle or rear collision warning information, and outputting the rear collision warning signal of the elderly driver a learning unit that learns reaction information for each situation; and
and a warning signal output time setting unit configured to set an output time of the rear collision warning signal for each situation of the elderly driver based on the learned reaction information for each situation.
3. The method of claim 2,
The control unit is
When the driving state information or rear collision warning information of the rear vehicle sensed in real time is received, the output time of the rear collision warning signal corresponding to the situation is obtained from the warning signal output time setting unit, and the obtained rear collision warning signal The rear warning device for an elderly driver, characterized in that it further comprises a warning signal output control unit for outputting a rear collision warning signal at the output timing of the.
3. The method of claim 2,
The alarm signal output time setting unit,
The rear warning device for an elderly driver, characterized in that the output method of the rear collision warning signal for each situation is set differently based on the learned reaction information for each situation.
delete Recognizing, by the controller, an elderly driver whose cognitive/reactive ability of at least one of auditory, visual and motor nerves falls below a reference value; and
The control unit learns the reaction information for each situation of the elderly driver according to the output of the rear collision warning signal accumulated for a certain period of time while the elderly driver drives the vehicle, and the situation of the elderly driver based on the learned reaction information for each situation Setting the output timing of the star rear collision warning signal; including,
In the step of setting the output timing of the rear collision warning signal for each situation of the elderly driver,
When there is a possibility that the rear vehicle collides with the vehicle in front, the rear vehicle stops suddenly after transmitting the rear collision warning information to the vehicle, and the rear vehicle is located at the first point due to the sudden stop of the rear vehicle In the case of outputting the rear collision warning signal,
The control unit may include a reaction in which the elderly driver does not recognize the rear collision warning signal or a reaction in which the vehicle collides with a neighboring vehicle by bending a steering wheel, a reaction in which the elderly driver brakes by operating a brake pedal, and a reaction in which the vehicle is accelerated by operation of an accelerator pedal learning the reaction information of at least one of the elderly drivers,
When the learned reaction information is a reaction in which the elderly driver bends the steering wheel and collides with a vehicle next to it, it is determined that the first point is not appropriate as an output time of the rear collision warning signal, so that the rear vehicle is higher than the first point A rearward warning method for an elderly driver, characterized in that a second point further away from the vehicle is set as the output point of the rear collision warning signal.
7. The method of claim 6,
When the driving state information or rear collision warning information of the rear vehicle sensed in real time is received, the control unit acquires the output timing of the rear collision warning signal set in the corresponding situation, and rear collision at the output timing of the acquired rear collision warning signal The rear warning method for an elderly driver, characterized in that it further comprises the step of outputting a warning signal.
7. The method of claim 6,
In the step of setting the output timing of the rear collision warning signal for each situation of the elderly driver,
The rear warning method for an elderly driver, characterized in that the control unit sets a different output method of the rear collision warning signal for each situation based on the learned reaction information for each situation.

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