WO2007055191A1

WO2007055191A1 - Safety run assisting device

Info

Publication number: WO2007055191A1
Application number: PCT/JP2006/322156
Authority: WO
Inventors: Hirofumi Nishimura
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2005-11-11
Filing date: 2006-11-07
Publication date: 2007-05-18
Also published as: JP2007133732A

Abstract

Provided is a safety run assisting device capable of predicting a rear-end or front-end collision thereby to escape a danger reliably when it decides the danger, while reducing the trouble to be felt by a driver. The safety run assisting device comprises mobile body detecting means (101) for detecting a mobile body, a danger predicting means (102) for predicting whether or not a danger will occur between the mobile body detected by the mobile body detecting means (101) and the driver's vehicle, device action state detecting means (103) for detecting the action state of a device carried on the vehicle, and danger alarming means (104) for alarming the danger predicted by the danger predicting means (102), with such a variation of an action sound or output sound of the device as can be heard by the driver. The danger alarming means (104) includes alarm sound changing means (204) for changing, in accordance with the prediction result of the danger predicting means (102), the device action state detected by the device action state detecting means (103), thereby to change the device action sound or output sound to be heard by the driver.

Description

Safe driving support device

Technical field

TECHNICAL FIELD [0001] The present invention relates to a safe driving support device for guiding a driver who drives a vehicle such as an automobile as to whether there is a danger such as a collision, rear-end collision, or contact with a pedestrian.

Background art

[0002] In order to inform the driver of a vehicle whether there is a danger such as a collision, rear-end collision, or contact with a pedestrian, it is desirable to warn the driver only when necessary. In other words, if the driver has already recognized that it is in a dangerous state, it is not necessary to issue an alarm, but if the driver is notified of an extra alarm, annoyance will increase.

[0003] Conventionally, as a device for guiding a driver of a vehicle whether it is in a dangerous state or a safe state, for example, an alarm is issued only when it is desired to check whether the driver is in a dangerous state. What is guided is known (for example, see Patent Document 1).

FIG. 6 is a block diagram showing a configuration of a conventional device disclosed in Patent Document 1. In FIG. 6, warning information request accepting means 601 is a switch for determining whether or not the driver accepts the alarm information, and only when the driver wants to know whether or not the driver is in a dangerous state. It is operated only when requested and alarm information is output.

[0005] In addition, in order to prevent contact with pedestrians, the turning trajectory drawn by the vehicle when turning right or left at the intersection becomes a turning trajectory that ensures sufficient visibility of the driver, thereby reducing the delay in finding the driver's danger. As described above, there is also known one that guides the driving of a driver by calculating an ideal turning trajectory in advance (see, for example, Patent Document 2).

FIG. 7 is a diagram for explaining the conventional device described in Patent Document 2, and is a diagram showing the behavior of the vehicle when making a right turn at an intersection. 701, 702, 703 are the positions on the track, 704 and 705 are the tracks that the vehicle is driving, 706 is the driver's view at the position 702 on the track The range is shown. Since sufficient visibility cannot be secured on the trajectory 704, the turning start position is guided by changing the sound linked to the blinker so that the trajectory 705 is obtained. In addition, blind spots are displayed on the monitor to guide the driver to dangerous situations. Patent Document 1: Japanese Unexamined Patent Application Publication No. 2004-86523 (Page 1, Figure 1)

Patent Document 2: Japanese Patent Laid-Open No. 2005-215771 (Page 1-2, Fig. 1)

Disclosure of the invention

Problems to be solved by the invention

[0007] If, however, the vehicle is temporarily stopped at an intersection and waiting for a right turn, it may be difficult for the driver to determine when to turn right depending on the speed and position of the oncoming vehicle. In such a case, the conventional method has the following problems to guide whether there is a danger of a collision.

[0008] That is, in the configuration described in Patent Document 1, an alarm is not output unless the driver requests an alarm. Therefore, even if the in-vehicle device predicts the risk of a collision or a rear-end collision when the driver starts a right turn. If the driver cannot predict the dangerous state, no warning is output and the driver cannot be surely notified of the dangerous state.

[0009] Further, in the configuration described in Patent Document 2, a collision or a collision is predicted, so that it is not possible to determine a collision when making a right or left turn. Even if guidance is provided using sound linked to the blinker, the guidance sound is always informed when waiting for a right turn, which causes trouble.

[0010] In this way, with the conventional technology, when the in-vehicle device predicts the danger of a rear-end collision or collision, the driver cannot be bothered and the danger cannot be reliably guided to the driver. There was a problem.

[0011] The present invention solves the above-described conventional problems, and can reduce the annoyance felt by the driver when guiding whether or not the vehicle is in a dangerous state, and reliably guide the danger. An object of the present invention is to provide a safe driving support device that can be used.

Means for solving the problem

[0012] A safe driving support device according to the present invention is a safe driving support device mounted on a vehicle, and includes a moving body detection unit that detects a moving body, a moving body that is detected by the moving body detection unit, and the mobile body. A risk prediction means for predicting whether a danger will occur with the vehicle, a device operation state detection means for detecting the operation state of the equipment mounted on the vehicle, and the risk predicted by the risk prediction means A danger notification means for notifying by a change in the operation sound or output sound of the device that can be heard, the danger notification means has a notification sound change means, and the notification sound change means is a prediction of the risk prediction means According to the result, the operation state of the device detected by the device operation state detection means is changed to change the operation sound or output sound of the device that can be heard by the driver.

[0013] With this configuration, the safe driving support apparatus of the present invention can reliably notify the driver of a danger such as a collision or a rear-end collision, and can also operate the device or output sound of the device. Since it only changes, it can reduce the annoyance felt by the driver.

[0014] In the safe driving support device of the present invention, the danger prediction means determines whether or not the vehicle is in a travelable state based on a prediction result of the danger, and the notification sound changing means is in accordance with the determination result. The operation state or the output sound of the device that can be heard by the driver by changing the operation state of the device may be changed.

[0015] With this configuration, the safe driving support device of the present invention only reduces the operation sound or the output sound of the device, so that it is possible to reduce the inconvenience felt by the driver due to the output of an extra notification sound.

[0016] In the safe driving support device of the present invention, the danger prediction means determines the type of danger, and the notification sound changing means changes the operating state of the device according to the danger type and is heard by the driver. You may have the structure which changes the operation sound or output sound of the said apparatus.

[0017] With this configuration, the safe driving support device of the present invention allows the driver to check the type of danger according to the operation sound or output sound of the device.

[0018] In the safe driving support device of the present invention, the device is a winker or navigation, and the danger informing means allows the driver to hear the danger predicted by the danger predicting means. The notification sound changing means changes the operating state of the winker or navigation according to the prediction result of the danger prediction means, and the winker operating sound or navigation sound heard by the driver is notified. You may have the structure which changes the guidance sound of Yong.

[0019] With this configuration, the safe driving support device of the present invention only changes the operation sound of the blinker or the guidance sound of the navigation, thereby reducing the annoyance felt by the driver due to the output of an extra notification sound. it can.

[0020] In the safe driving support device of the present invention, the device is a noise canceller, and the danger reporting unit travels in the vehicle compartment or near the driver's ear where the danger predicted by the danger prediction unit can be heard by the driver. The notification sound changing means changes the operating state of the noise canceller according to the prediction result of the danger prediction means, and the vehicle interior or the driver's ears can be heard by the driver. It may have a configuration that suppresses driving noise in the vicinity or noise outside the passenger compartment.

[0021] With this configuration, the safe driving support device according to the present invention changes the operating state of the noise canceller when a danger is predicted, so that the driving noise heard by the driver or the driving noise in the vicinity of the driver's ear, The noise can be suppressed, and the driver can be informed of the predicted risk, and the driving noise in the passenger compartment or near the driver's ears or the noise outside the passenger compartment only changes. The troublesomeness caused by alarms can be reduced.

The invention's effect

[0022] According to the safe driving support device of the present invention, when a danger is predicted, the driver can be surely notified of the danger, and the driver feels bothered by the extra notification sound being output. Can be reduced.

Brief Description of Drawings

FIG. 1 is a block diagram showing a configuration of a safe driving support device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the danger notification means in the first embodiment of the present invention. FIG. 3 is a diagram showing data selection of the output sound data selection means in the first embodiment of the invention.

FIG. 4 is a block diagram showing a configuration of a safe driving support device according to a second embodiment of the present invention. FIG. 5 shows a configuration of a noise canceller according to a second embodiment of the present invention. FIG. 6 is a block diagram showing a configuration of a conventional safe driving support device.

FIG. 7 is a diagram for explaining a conventional safe driving support device.

Explanation of symbols

[0024] 101 Moving object detection means

102 Risk prediction measures

103 Device operating state detection means

104 Danger notification means

202 First operation confirmation sound data storage means

203 Second operation confirmation sound data storage means

204 Output sound data selection means (notification sound change means)

205 Volume control means

206 Speaker

403 Noise canceller (danger notification means)

404 Noise canceller control unit (apparatus operating state detection means, notification sound change means) 501 microphone

502 Anti-phase sound generation means

503 Suppression amount adjusting means (notification sound changing means)

504 Speaker

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0026] (First embodiment)

FIG. 1 is a block diagram showing a configuration of a safe driving support apparatus mounted on a vehicle in the first embodiment of the present invention. As shown in FIG. 1, the safe driving support device according to the present embodiment is a safe driving support device mounted on a vehicle, and is detected by a moving body detection unit 101 that detects a moving body and a moving body detection unit 101. Risk predicting means 102 for predicting whether or not a danger occurs between the mobile object and the own vehicle, equipment operating state detecting means 103 for detecting the operating state of equipment mounted on the vehicle, and risk predicting means 102 The danger predicted in A danger notification means 104 that notifies the driver of changes in the operation sound or output sound of the equipment that can be heard by the driver. The danger notification means 104 is detected by the equipment operation state detection means 103 according to the prediction result of the danger prediction means 102. It is provided with a notification sound changing means, which will be described later, for changing the operation sound or the output sound of the device that can be heard by the driver by changing the operation state of the device. In this embodiment, in order to facilitate understanding, FIG. 1 will be used as an example of guidance in a startable state when the vehicle is temporarily stopped for a right turn waiting at an intersection.

[0027] The moving body detection means 101 is a sensor composed of, for example, a camera that captures an image in front of the vehicle and an arithmetic unit, and detects a moving body such as a vehicle, and its position, speed, and progress. The direction is detected. For example, two cameras are arranged in the passenger compartment so as to capture the image in front of the vehicle and used as a stereo camera so that the image in front of the vehicle is always taken. The computing unit processes each image captured by the two cameras for each frame. First, smoothing is performed using moving averages to remove image noise, and edge extraction is performed by extracting high-frequency components of the image using a digital filter. Binarization is performed on the subsequent images. A shape close to a rectangular parallelepiped is extracted from this binary image by pattern matching, and this is used as a three-dimensional object in front. Also, by calculating the difference between the binary images obtained from the two images, the parallax between the two images is calculated. Small objects are solid objects in the distance. At this time, the relative positional relationship between the vehicle and the three-dimensional object is calculated using triangulation. This process is performed for each frame, and the relative positional relationship and moving speed of the three-dimensional object for each frame are recorded as moving object detection data. The relative position coordinates are two-dimensional coordinates with the vehicle position as the origin and the y-axis in the direction the vehicle is facing.

[0028] Examples of the mobile body detected by the mobile body detection means 101 include pedestrians, motorcycles, and bicycles in addition to vehicles.

[0029] The risk prediction unit 102 predicts a risk of whether or not a collision between the three-dimensional object and the host vehicle occurs in functional relation with the moving body detection unit 101. First, the vehicle is stopped waiting for a right turn at the intersection, the initial state is set as the initial state, and the time and position when the right turn is started from that time are calculated. For example, every 0.1 second until 5 seconds later, the position at 0 seconds is taken as the origin, and the direction in which the vehicle is facing at 0 seconds is taken as the y-axis and calculated as 2D coordinates. At this time, rudder The change in angle and speed may be given a certain pattern, or the change in rudder angle and speed at the time of right turn from usual is recorded, and this change pattern can be averaged and calculated. Alternatively, the trajectory may be predicted by recognizing the shape of the intersection with a camera and applying an arc to the road lane that intersects the current position of the vehicle. On the other hand, the trajectory up to 5 seconds after the standing object extracted by the moving object detecting means 101 is predicted every 0.1 second. Since the moving object detection means 101 records the trajectory and moving speed of the three-dimensional object so far as moving object detection data, this trajectory may be interpolated. The simplest method is to obtain a two-dimensional vector of the direction of movement of the three-dimensional object by linearly interpolating the relative position obtained in the current frame and the previous frame, and then add this two-dimensional The trajectory at the frame interval time can be predicted by adding the vector multiple times. The position obtained in this frame interval time is further linearly interpolated and corrected to a position of 0.1 second interval. Then, with respect to the predicted trajectory obtained every 0.1 second between the vehicle and the three-dimensional object, the Eugrid distances of these positions are calculated for each 0.1 second time. Predict that there is a possibility of a collision if this Euglet distance is shorter than a certain threshold (for example, about 4m for one vehicle).

[0030] On the other hand, in the present embodiment, the device operation state detection means 103 detects one or more operation states of winker and navigation! /. For example, the device operation state detection means 103 detects that the right winker switch is turned on and the winker is guiding the right turn, or that the navigation is guiding the right turn. Yes. Further, the winker / navigation operating state may be detected in combination, for example, when the winking force is activated while detecting the navigational operating state, the winker operating state is preferentially detected. In order to facilitate the explanation, the following explanation will be made assuming that the device operating state detecting means 103 detects the operating state of the winker turning right or left.

The danger notification unit 104 is configured as shown in FIG. 2, for example. In FIG. 2, the first operation confirmation sound data storage means 202 and the second operation confirmation sound data storage means 203 are composed of non-volatile semiconductor memory and are used for operation confirmation to inform the driver that the blinker is operating. The sound data for storing is stored. At this time, the first operation confirmation sound data storage means 202 and the second The operation confirmation sound data storage means 203 stores different sounds. For example, in the first operation confirmation sound data storage means 202, a sound (first operation confirmation sound) that simulates the operation sound of a mechanical relay such as a “click” synchronized with blinking of the blinker once. Store it. On the other hand, the second operation confirmation sound data storage means 203 similarly stores a “cut” t, a sound (second operation confirmation sound) synchronized with blinking of the blinker once. The output sound data selection means 204 selects whether or not to notify according to the risk prediction result and the device operation state detection result. Figure 3 shows the selection algorithm. Figure 3 shows an example of outputting two types of safety and danger as the risk prediction results. The contents to be notified are as follows. When the device is predicted to be safe during operation, the first operation confirmation sound is notified as the blinker operation sound, while when the device is predicted to be dangerous during operation, the second operation confirmation sound is generated as the blinker operation sound. Is notified. When the equipment is stopped, control is performed so that no notification is made without selecting anything. If two or more states are predicted as risk prediction results and the results are notified, it is sufficient to increase the number of means for storing operation confirmation sounds according to the number. The output sound data selection means 204 constitutes notification sound changing means.

The volume control means 205 amplifies the gain using a power amplifier after converting the digitized sound data into analog by the DZA converter.

[0033] The speaker 206 outputs the analog signal output from the volume control means 205 as sound.

[0034] In the above description, the blinker operation confirmation sound is explained to be changed by electronic control. However, if the relay operation sound that switches blinker blinking is still the operation confirmation sound, A new terminal may be provided on the relay, and the operation sound may be changed by inputting a dangerous state to this terminal, or only the sound superimposed on the operation sound of the relay may be output separately. However, it may be possible to perceive the difference. For example, prepare another relay to allow the added relay to operate according to the risk prediction result, and to operate the added relay with a delay of about 0.2 seconds. If this is the case, the driver can perceive the difference between the “click” sound and the “click” sound for each blink of the blinker.

[0035] Note that, as an example of the operation confirmation sound of the blinker, a sound simulating the operation sound of a mechanical relay is taken as an example. As explained above, any operation sound can be used as long as it does not feel annoying. For example, in synchronism with blinking of blinker once, “Itsuki” and “Damame” are uttered! /, And the voice is converted into a mechanical voice quality as a material, and these are dangerous as sound effects. May be switched and notified according to the predicted result.

[0036] In the present embodiment, the case where the operating state of the winker is detected and the operation confirmation sound of the winker is changed has been described. However, in order to make the driver confirm that the hybrid vehicle is ready to start. The operation confirmation sound that simulates the engine sound may be changed. Further, although the danger notification means has been described as a dedicated means, it can also be configured in combination with audio equipment such as speakers and amplifiers in car audio and power navigation. Furthermore, the danger notification means can be configured to change the volume of an MD player, radio, etc. In this case, in an unsafe condition, the volume is reduced so that no extra warning sound is left unattended. The driver may be informed of dangerous or safe conditions.

[0037] In the present embodiment, an example of performing a risk judgment at the time of a right turn has been described. However, the present invention is not limited to the notification in the risk prediction at the time of a right turn, needless to say. For example, it can be applied to all cases in which the risk of an accident has been predicted from the past, such as the danger of a rear-end collision when driving on a single road, or the risk of involving a pedestrian when turning left at an intersection, and an alarm is notified when it is dangerous. Is possible. At this time, an operation confirmation sound or the like that simulates an engine sound for allowing the driver to confirm that the vehicle is ready to start can be used as the operation sound or output sound of the device.

As an example, the device operation state detection unit 103 determines whether the vehicle is in a travelable state based on the operation state of the danger prediction unit 102, and the operation state detection unit 103 generates a notification sound according to the determination result. The following is a brief description of how to change and guide the driver whether the vehicle is ready to run. In order to determine whether or not the vehicle is in a travelable state, for example, the danger prediction means 102 may always determine a collision with a three-dimensional object (other vehicle, building, etc.). There are two main methods of realization: a method when the vehicle is stopped! /, And a method when the vehicle is running. [0038] When the host vehicle is traveling, the future trajectory of the host vehicle is predicted from the vehicle speed and the steering angle of the host vehicle at the time of determining the future collision. The calculated trajectories of the solid objects are compared, and it is determined that the vehicle cannot travel if there is at least one case where the distance between the vehicle and the solid object is closer than a certain threshold within the future time when the trajectory is predicted. The distance force between the vehicle and the three-dimensional object at all times in the future time when the trajectory is predicted may be determined as a state in which traveling is possible if the distance is greater than this threshold value. At this time, if there are multiple oncoming vehicles, all the oncoming vehicles are judged, and if even one vehicle is less than the threshold distance between the host vehicle and the three-dimensional object, it is determined that traveling is impossible. If the distance between the vehicle and the three-dimensional object is greater than the threshold for all oncoming vehicles, it can be determined that the vehicle is ready to run.

[0039] On the other hand, if the vehicle stops like waiting for a right turn at an intersection, the trajectory when the vehicle starts at the time of determination is predicted to predict a collision with a three-dimensional object. To do. The future trajectory of the vehicle at this time may be given a certain pattern, or the rudder angle and speed change at the time of a right turn from usual are recorded, and this conversion pattern is averaged and calculated. It is also possible to recognize the shape of the intersection with a camera and apply a circular arc to the lane of the road that intersects the current position of the vehicle to predict and use the trajectory. Whether or not the vehicle is ready to travel can be determined in the same manner as in the case where the vehicle travels using the trajectory of the vehicle.

[0040] Further, the danger prediction means 102 determines the type of dangerous state, changes the operation sound or output sound of the equipment, that is, the operation confirmation sound output method according to the dangerous state type, and It is also possible to convey the type to the driver. For example, if there is a dangerous condition on the right side of the vehicle, an operation confirmation sound is output from the speaker on the right side of the vehicle interior. Conversely, if there is a dangerous condition on the left side of the vehicle, It is also possible to output an operation confirmation sound from the speaker. It is also possible to prepare each operation confirmation sound to convey a dangerous state. For example, if the risk prediction means predicts the risk of involving a pedestrian when making a left turn at an intersection, say “Human” as the blinker's operation sound in response to one blinker blinking! / The voice is converted into a mechanical voice quality, and it is used as an operation confirmation sound. In this way, the target for the driver is a human being. I can tell you something. In the case of a hybrid vehicle, an operation confirmation sound that simulates an engine sound may be provided for each operation mode, and this may be changed to prompt deceleration, stop, or the like.

[0041] As described above, according to the present embodiment, the danger prediction result of the danger prediction means 102 and the device operation state detection result of the equipment operation state detection means 103 are input to the danger notification means 104. It is possible to change the operation confirmation sound that informs the operation status of the equipment according to the result of predicting the danger, and use the sound that is normally in the passenger compartment to reliably inform the driver of driving danger and safety information It is possible to reduce the annoyance felt by the driver due to extra warnings. For example, if you are waiting for a right turn at an intersection and an oncoming vehicle is continuously entering the intersection, it is predicted that a right turn will be dangerous. As the sound is output, the annoyance felt by the driver can be greatly reduced, and even if the driver knows the situation when the right turn is possible, the operating sound of the blinker changes. Therefore, the troublesome feeling felt by the driver due to the output of an extra alarm sound can be greatly reduced.

[0042] (Second Embodiment)

FIG. 4 is a block diagram showing a safe driving support apparatus according to the second embodiment of the present invention. In FIG. 4, the same reference numerals are used for the moving body detection means and the risk prediction means having the same components as in FIG. 1, and the description thereof is omitted.

As shown in FIG. 4, the safe driving support device according to the present embodiment includes a moving body detection unit 101 that detects a moving body, and a danger between the moving body detected by the moving body detection unit 101 and the host vehicle. A noise prediction unit 102 that predicts whether or not a noise occurs, a noise canceller 403 that suppresses driving noise in the passenger compartment or near the driver's ears, or noise outside the passenger compartment, and the operation state of the noise canceller 403 are detected, and the noise canceller 403 And a noise canceller control unit 404 for controlling the operation.

FIG. 5 shows the configuration of the noise canceller 403 in FIG. The noise canceller 403 includes a microphone 501, an antiphase sound generation unit 502, a suppression amount adjustment unit 503, and a speaker 504. [0044] The microphone 501 is a microphone for collecting noise, and is arranged at a position where the noise is the highest from outside the passenger compartment and enters the passenger compartment.

The speaker 504 is disposed near the driver's ear and outputs a sound for canceling the noise. The sound for canceling the noise is generated by the antiphase sound generation means 502. For example, the sign is reversed with respect to the noise picked up by the microphone 501, and the delay is considered in consideration of the sound transmission time from the speaker 504 to the driver's ear and the sound transmission time from the microphone 501 to the driver's ear. Adds time to generate anti-phase sound.

[0046] Suppression amount adjusting means 503 adjusts the amount of suppression of running noise in the passenger compartment or near the driver's ears or noise outside the passenger compartment that can be heard by the driver.

The noise canceller control unit 404 detects the operating state of the noise canceller 403, and controls the suppression amount adjustment means 503 according to the prediction result of the danger prediction means 102, so that the vehicle interior or the vicinity of the driver's ear can be heard. Suppress driving noise or noise outside the passenger compartment.

For example, if there are two types of risk prediction results, danger and safety, the amount of suppression is maximized when predicted to be safe, and the amount of suppression is minimized when predicted as dangerous. Alternatively, instead of suppressing noise or noise, it may be increased and notified. In this embodiment, the noise canceller control unit 404 detects the operation state of the noise canceller 4003 as the operation state detection unit, and the noise canceller control unit 404 and the suppression amount adjustment unit 503 notify the danger notification unit. It functions as a sound change means!

[0047] Note that, in the present embodiment, the noise near the driver's ear may be estimated by using a plurality of force microphones described by taking the case of one microphone as an example, and the sound in the opposite phase may be generated. In addition, two or more speakers may be arranged near the left and right ears to reproduce sounds with opposite phases for each of the left and right ears. The basic method of noise suppression is limited to the above example. is not.

[0048] In the present embodiment, the force described in the case where an electronic method is used as a method of suppressing noise. Even if the noise canceller 403 is configured using a method of slightly opening and closing the window glass of the vehicle, A similar effect can be obtained by changing the amount of noise outside the passenger compartment entering the passenger compartment and making the driver perceive the difference in the noise. Also book In the embodiment, the case where the danger notification unit is configured by the noise canceller 403 has been described as an example. However, the present invention is not limited to this, for example, the configuration further including the danger notification unit 104 of the first embodiment. You can have it, not to mention that!

[0049] As described above, according to the present embodiment, the operating state of the noise canceller 403 can be changed according to the risk prediction result of the risk prediction means 102. Therefore, the driver is informed according to the result of predicting the risk. It is possible to change the amount of noise outside the passenger compartment that can be heard, and to inform the driver of information related to driving hazards and safety, and to reduce the annoyance felt by the driver due to extra warnings.

Industrial applicability

[0050] The safe driving support device according to the present invention confirms the risk to the driver when the risk is predicted.

In addition to being able to provide notifications, it is possible to reduce the annoyance felt by the driver due to the output of extra notification sounds. It is useful as a device to perform.

Claims

The scope of the claims

[1] A safe driving support device mounted on a vehicle,

A moving body detecting means for detecting the moving body;

Danger prediction means for predicting whether or not danger occurs between the mobile body detected by the mobile body detection means and the own vehicle;

Device operating state detecting means for detecting the operating state of the device mounted on the vehicle, danger notifying means for notifying the danger predicted by the risk predicting means by a change in the operating sound or output sound of the device heard by the driver; With

The danger notification unit includes a notification sound change unit, and the notification sound change unit changes the operation state of the device detected by the device operation state detection unit according to a prediction result of the danger prediction unit. The operation driving sound or the output sound of the device that can be heard by the driver is changed.

[2] The danger prediction means determines whether or not the vehicle is in a travelable state based on the prediction result of the danger, and the notification sound changing means changes the operation state of the device according to the determination result. The safe driving support device according to claim 1, wherein an operation sound or an output sound of the device that can be heard by a driver is changed.

[3] The danger predicting means determines the type of danger, and the notification sound changing means changes the operation state of the equipment according to the danger type and outputs the operation sound or output sound of the equipment that can be heard by the driver. The safe driving support device according to claim 1 to be changed.

[4] The device is a winker or navigation,

The danger notification means notifies the danger predicted by the danger prediction means by a change in blinker operation sound or navigation guidance sound heard by the driver,

The notification sound changing means changes the operation state of the winker or navigation according to the prediction result of the danger prediction means, and changes the operation sound of the winker or the guidance sound of the navigation that can be heard by the driver. The safe driving support device according to claim 1.

[5] The device is a noise canceller,

The danger informing means hears the danger predicted by the danger prediction means to the driver. Notification of changes in noise in the passenger compartment or near the driver's ears or outside the passenger compartment.

The notification sound changing means changes the operating state of the noise canceller in accordance with the prediction result of the danger prediction means, and suppresses running noise in the vehicle interior or in the vicinity of the driver's ears or noise outside the vehicle cabin that can be heard by the driver. The safe driving support device according to claim 1, wherein: