JP6949278B2 - Driving support device, driving support system and driving support method - Google Patents

Description

The present invention relates to a driving support system that supports the driving of a vehicle, and more particularly to a technique for capturing voice outside the vehicle into the vehicle.

The comfort inside the car is increasing year by year due to the improved performance of in-vehicle audio equipment and the sound insulation of the vehicle, but on the other hand, it becomes difficult for the sound outside the car to reach the inside of the car, and the driver can properly grasp the situation outside the car. May be difficult. As a technology to solve this problem, a microphone that acquires the sound outside the vehicle is installed on the outside of the vehicle body, and when the vehicle passes through a predetermined point (narrow road intersection, railroad crossing, pause point, etc.), it is collected by the microphone. A technique for capturing the sound of the outside of a vehicle into a vehicle is known (for example, Patent Document 1 below). In addition, a technology that installs a microphone to acquire the outside sound of the vehicle on the outside of the vehicle body and captures the outside sound collected by the microphone into the vehicle when a specific outside sound (such as a siren sound of an emergency vehicle or a warning sound of a crossing) is detected. Has also been proposed (for example, Patent Document 2 below).

Japanese Unexamined Patent Publication No. 2006-262147 Japanese Unexamined Patent Publication No. 11-32146

For example, on a road with poor visibility or a complicated road, it may be difficult for sound to be transmitted due to reflection or blocking by obstacles. May not be obtained properly.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a driving support device that is not easily affected by obstacles and can take in the sound outside the vehicle into the vehicle.

The driving support device according to the present invention acquires the position of the own vehicle and the external sound introduction point storage unit that stores the information on the position of the external sound introduction point defined as the point where the external sound should be output from the speaker in the vehicle. Based on the vehicle position acquisition unit, the position of the own vehicle, and the position of the external sound introduction point, a determination unit for determining whether or not the external sound introduction point is near the own vehicle, and the own vehicle. When the vehicle exterior sound introduction point is near the vehicle, the vehicle exterior sound acquisition unit that acquires the vehicle exterior sound picked up by the roadside sound pickup device installed at the vehicle exterior sound introduction point by communication and the vehicle exterior sound acquisition unit It is provided with an output unit for outputting the acquired outside sound from a speaker inside the vehicle of the own vehicle.

Since the driving support device according to the present invention acquires the outside sound acquired by the roadside sound collecting device installed on the road and outputs it from the speaker inside the vehicle, the case where the outside sound is acquired by using the microphone provided on the vehicle body. Compared to the above, the influence of obstacles is small and high reliability can be obtained.

Objectives, features, aspects, and advantages of the present invention will be made more apparent with the following detailed description and accompanying drawings.

It is a figure which shows the structure of the driving support system which concerns on Embodiment 1. FIG. It is a figure which shows the structure of the roadside sound collecting device. It is a flowchart which shows the operation of the driving support apparatus which concerns on Embodiment 1. FIG. It is a figure which shows the hardware configuration example of the driving support device. It is a figure which shows the hardware configuration example of the driving support device. It is a figure which shows the display example of the sound source direction image. It is a figure which shows the display example of the sound source direction image. It is a figure which shows the structure of the driving support system which concerns on Embodiment 2. It is a figure which shows the structure of the car outside sound introduction point server.

<Embodiment 1>
FIG. 1 is a diagram showing a configuration of a driving support system according to the first embodiment. As shown in FIG. 1, the driving support system includes a driving support device 10 mounted on the vehicle 1 and a roadside sound collecting device 30 which is a sound collecting device installed on the side of an outdoor road. Hereinafter, the vehicle equipped with the driving support device 10 is referred to as "own vehicle". However, the driving support device 10 does not have to be permanently installed in the own vehicle 1, and may be realized on a portable device such as a mobile phone, a smartphone, or a portable navigation device.

Although only one roadside sound collecting device 30 is shown in FIG. 1, the roadside sound collecting device 30 is installed in various places on the road network. In the present embodiment, the "outside sound introduction point", which is the point where the outside sound should be output from the speaker inside the car, is defined in advance, and the roadside sound collecting device 30 is installed at least at the outside sound introduction point. It shall be. As the outside sound introduction point, for example, a place where traffic accidents occur frequently, an intersection with poor visibility, a railroad crossing, a school road, or any other place where special attention is required for driving is selected. Further, the roadside sound collecting device 30 is located at a position close to the roadway and capable of collecting sound without being affected by obstacles, such as a traffic signal, a traffic sign, a utility pole, or a building along the roadway. Will be installed.

When the own vehicle 1 passes the outside sound introduction point, the driving support device 10 collects the sound (outside sound) collected by the roadside sound collecting device 30 installed at the outside sound introduction point inside the own vehicle 1. By outputting from the speaker of, the driving by the occupant (driver) of the own vehicle 1 is supported. As shown in FIG. 1, the driving support device 10 is connected to the communication device 21, the current position calculation device 22, and the in-vehicle speaker 23 mounted on the own vehicle 1.

The communication device 21 is a means for the driving support device 10 to communicate with the outside. The driving support device 10 can acquire the outside sound (voice data) collected by the roadside sound collecting device 30 by communicating with the roadside sound collecting device 30 using the communication device 21. The communication device 21 may be a communication means dedicated to the driving support device 10, or may be a general-purpose communication means such as a mobile phone or a smartphone.

The current position calculation device 22 calculates the current position of the own vehicle 1 based on a positioning signal received from a GNSS (Global Navigation Satellite System) satellite such as a GPS (Global Positioning System) satellite. Further, the current position calculation device 22 may include a means for calculating the current position of the own vehicle 1 by autonomous navigation based on the output of the speed sensor or the direction sensor of the own vehicle 1.

The in-vehicle speaker 23 is a means for the driving support device 10 to output voice, and is installed in the vehicle of the own vehicle 1. The driving support device 10 causes the occupants of the own vehicle 1 to hear the outside sound by outputting the outside sound acquired from the roadside sound collecting device 30 from the in-vehicle speaker 23 when the own vehicle 1 passes the outside sound introduction point. NS. The in-vehicle speaker 23 may be dedicated to the driving support device 10, or may be shared with the audio system or navigation system of the own vehicle 1, for example.

Here, the communication device 21, the current position calculation device 22, and the in-vehicle speaker 23 are externally attached to the driving support device 10, but some or all of them may be built in the driving support device 10.

As shown in FIG. 1, the driving support device 10 includes an external sound introduction point storage unit 11, a vehicle position acquisition unit 12, a determination unit 13, an external sound acquisition unit 14, and an output unit 15.

The vehicle exterior sound introduction point storage unit 11 is a storage medium in which information on the position of the vehicle exterior sound introduction point (point where the vehicle exterior sound should be output from the speaker inside the vehicle) is stored. The vehicle position acquisition unit 12 acquires information on the current position of the own vehicle 1 from the current position calculation device 22.

The determination unit 13 is close to the own vehicle 1 by collating the position of the own vehicle 1 acquired by the vehicle position acquisition unit 12 with the position of the external sound introduction point stored in the external sound introduction point storage unit 11. Determine if there is an outside sound introduction point in. Specifically, the determination unit 13 calculates the distance between the own vehicle 1 and the outside sound introduction point, and when the distance is equal to or less than a predetermined threshold value, the outside sound introduction point is the own vehicle 1. Judge that it is nearby.

The above-mentioned threshold value, which is a criterion for determining whether or not the outside sound introduction point is close to the own vehicle 1, may have different values depending on whether the own vehicle 1 approaches the outside sound introduction point and away from the outside sound introduction point. For example, when the own vehicle 1 is located between a point 100 m before the external sound introduction point and a point 50 m ahead of the external sound introduction point, it is determined that the external sound introduction point is near the own vehicle 1. Can be considered. In general, the outside sound behind the vehicle is less likely to affect the running of the vehicle than the outside sound in front of the vehicle. Therefore, the threshold value when the own vehicle 1 moves away from the outside sound introduction point is the outside sound. It may be smaller than the threshold value when approaching the introduction point.

When the determination unit 13 determines that there is an outside sound introduction point near the own vehicle 1, the vehicle outside sound acquisition unit 14 uses the communication device 21 to install the roadside sound collection device 30 at the vehicle outside sound introduction point. To acquire the outside sound (voice data) collected by the roadside sound collecting device 30 by communicating with the roadside sound collecting device 30.

The output unit 15 outputs the vehicle exterior sound from the vehicle interior speaker 23 of the own vehicle 1 by performing the vehicle exterior sound reproduction processing acquired by the vehicle exterior sound acquisition unit 14. As a result, the occupant of the own vehicle 1 can hear the outside sound of the own vehicle 1 when the own vehicle 1 passes the outside sound introduction point.

As can be seen from the above description, the vehicle exterior sound output by the output unit 15 from the vehicle interior speaker 23 is picked up by the roadside sound collecting device 30 installed in advance at the vehicle exterior sound introduction point, and the vehicle exterior sound acquisition unit 14 communicates with the sound. It was acquired by. The outside sound picked up by the roadside sound collecting device 30 is less susceptible to obstacles than, for example, the outside sound picked up by a microphone provided on the vehicle body of the own vehicle 1. Therefore, according to the present embodiment, the occupant of the own vehicle 1 can hear the outside sound that is less affected by obstacles when the own vehicle 1 passes the outside sound introduction point, and can accurately determine the situation outside the vehicle. Can be judged.

Next, the configuration of the roadside sound collecting device 30 will be described. FIG. 2 is a diagram showing the configuration of the roadside sound collecting device 30.

As shown in FIG. 2, the roadside sound collecting device 30 includes a roadside microphone 31, a receiving unit 32, a transmitting unit 33, and a control unit 34. The roadside microphone 31 is a means for collecting outside sound. The receiving unit 32 includes a signal for requesting the start of transmission of the vehicle exterior sound transmitted from the driving support device 10 (hereinafter referred to as “transmission start request”) and a signal for requesting the stop of transmission of the vehicle exterior sound (hereinafter referred to as “transmission stop request”). ) Is a means for receiving. The transmission unit 33 is a means for transmitting the outside sound (voice data) collected by the roadside microphone 31 to the driving support device 10.

The control unit 34 comprehensively controls the operation of the roadside sound collecting device 30. Specifically, when the receiving unit 32 receives the vehicle outside sound transmission start request from the driving support device 10, the control unit 34 continuously transmits the vehicle outside sound picked up by the roadside microphone 31 to the driving support device 10. In addition, the transmission unit 33 is controlled. Further, the control unit 34 controls the transmission unit 33 so that when the reception unit 32 receives the request to stop the transmission of the vehicle outside sound from the driving support device 10, the transmission of the vehicle outside sound to the driving support device 10 is stopped.

In this way, the roadside sound collecting device 30 transmits the outside sound picked up by the roadside microphone 31 to the driving support device 10 from the time when the transmission start request is received from the driving support device 10 to the time when the transmission stop request is received. It works to send continuously.

FIG. 3 is a flowchart showing the operation of the driving support device 10 according to the first embodiment. Hereinafter, the operation of the driving support device 10 will be described with reference to FIG.

When the driving support device 10 is activated, the vehicle position acquisition unit 12 acquires the position of the own vehicle 1 (step S101). Next, the determination unit 13 determines whether or not there is an external sound introduction point close to the own vehicle 1 based on the position of the own vehicle 1 and the position of the external sound introduction point stored in the external sound introduction point storage unit 11. (Step S102).

When there is an outside sound introduction point close to the own vehicle 1 (YES in step S102), the outside sound acquisition unit 14 confirms whether or not the outside sound is being received from the roadside sound collecting device 30 at the outside sound introduction point (step S103). ). If the vehicle outside sound is being received (YES in step S103), the process returns to step S101 as it is. If the vehicle outside sound is not being received (NO in step S103), the vehicle outside sound acquisition unit 14 transmits a vehicle outside sound transmission start request to the roadside sound collecting device 30 using the communication device 21 (step S104). The roadside sound collecting device 30 is started to transmit the sound outside the vehicle. Then, the vehicle exterior sound acquisition unit 14 starts receiving the vehicle exterior sound transmitted from the roadside sound collecting device 30 (step S105). Further, the output unit 15 starts outputting the vehicle exterior sound received by the vehicle exterior sound acquisition unit 14 from the vehicle interior speaker 23 (step S106), and returns to step S101.

Even if there is no external sound introduction point near the own vehicle 1 (NO in step S102), the external sound acquisition unit 14 confirms whether or not the external sound is being received from the roadside sound collecting device 30 (step S107). If the outside sound is not being received (NO in step S107), the process returns to step S101 as it is. However, immediately after the own vehicle 1 has passed the outside sound introduction point, even if the own vehicle 1 is away from the outside sound introduction point, the outside sound acquisition unit 14 receives the outside sound from the roadside sound collecting device 30. In some cases. In that case (YES in step S107), the vehicle outside sound acquisition unit 14 transmits a vehicle outside sound transmission stop request to the roadside sound collecting device 30 using the communication device 21 (step S108), and sends the vehicle outside sound transmission stop request to the roadside sound collecting device 30. Stops the transmission of outside sound. Then, the output unit 15 stops the output of the vehicle exterior sound from the vehicle interior speaker 23 (step S109), and returns to step S101.

The driving support device 10 repeatedly executes the above processing. As a result, the driving support device 10 receives the sound (outside sound) collected by the roadside sound collecting device 30 from the roadside sound collecting device 30 only when the own vehicle 1 passes near the vehicle outside sound introduction point. It can be output from the in-vehicle speaker 23 of the own vehicle 1.

4 and 5 are diagrams showing an example of the hardware configuration of the driving support device 10, respectively. Each function of the component of the driving support device 10 shown in FIG. 1 is realized by, for example, the processing circuit 50 shown in FIG. That is, the driving support device 10 stores the information on the position of the external sound introduction point, acquires the position of the own vehicle 1, and is near the own vehicle 1 based on the position of the own vehicle 1 and the position of the external sound introduction point. It is determined whether or not there is an outside sound introduction point in the vehicle, and when there is an outside sound introduction point near the own vehicle 1, the outside sound picked up by the roadside sound collecting device 30 installed at the outside sound introduction point. Is provided by communication, and a processing circuit 50 is provided for outputting the acquired outside sound from the in-vehicle speaker 23 of the own vehicle 1. The processing circuit 50 may be dedicated hardware, or may be a processor (Central Processing Unit (CPU), processing unit, arithmetic unit, microprocessor, microprocessor, etc.) that executes a program stored in the memory. It may be configured by using a DSP (also called a Digital Signal Processor).

When the processing circuit 50 is dedicated hardware, the processing circuit 50 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-Programmable). Gate Array), or a combination of these. The functions of the components of the driving support device 10 may be realized by individual processing circuits, or these functions may be collectively realized by one processing circuit.

FIG. 5 shows an example of the hardware configuration of the driving support device 10 when the processing circuit 50 is configured by using the processor 51 that executes the program. In this case, the functions of the components of the driving support device 10 are realized by software (software, firmware, or a combination of software and firmware). The software or the like is described as a program and stored in the memory 52. The processor 51 realizes the functions of each part by reading and executing the program stored in the memory 52. That is, the driving support device 10 acquires the position of the own vehicle 1 when executed by the processor 51, and the own vehicle is based on the position of the own vehicle 1 and the position of the predetermined external sound introduction point. The process of determining whether or not there is an outside sound introduction point near 1 and the roadside sound collecting device 30 installed at the outside sound introduction point when there is an outside sound introduction point near the own vehicle 1. A memory 52 for storing a program in which the process of acquiring the sounded outside sound by communication and the process of outputting the acquired outside sound from the in-vehicle speaker 23 of the own vehicle 1 are executed as a result. To be equipped with. In other words, it can be said that this program causes the computer to execute the procedure and method of operation of the components of the driving support device 10.

Here, the memory 52 is a non-volatile or non-volatile memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable Read Only Memory), and an EEPROM (Electrically Erasable Programmable Read Only Memory). Volatile semiconductor memory, HDD (Hard Disk Drive), magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD (Digital Versatile Disc) and its drive device, etc., or any storage medium used in the future. You may.

The configuration in which the functions of the components of the driving support device 10 are realized by either hardware, software, or the like has been described above. However, the present invention is not limited to this, and a configuration in which a part of the components of the driving support device 10 is realized by dedicated hardware and another part of the components is realized by software or the like may be used. For example, for some components, the function is realized by the processing circuit 50 as dedicated hardware, and for some other components, the processing circuit 50 as the processor 51 is stored in the memory 52. It is possible to realize the function by reading and executing it.

As described above, the driving support device 10 can realize each of the above-mentioned functions by hardware, software, or a combination thereof.

[Modification example]
When the output unit 15 outputs the vehicle exterior sound from the vehicle interior speaker 23, the output unit 15 may perform an auxiliary operation for making the occupant (particularly the driver) of the own vehicle 1 recognize that the vehicle exterior sound is output. For example, when the output unit 15 outputs the outside sound from the in-vehicle speaker 23, the seat of the own vehicle 1 is vibrated to notify the occupant that the outside sound is output, or the audio mounted on the own vehicle 1 is installed. By lowering the volume of the output sound of the device, it may be easier for the occupant to hear the sound outside the vehicle.

Further, when the output unit 15 outputs the vehicle exterior sound from the vehicle interior speaker 23, the output unit 15 may display an image or a character message notifying that the vehicle exterior sound is output on a display device (not shown). As the display device, for example, it is effective to use a head-up display capable of displaying an image directly in the driver's field of view by using the windshield of the own vehicle 1 as a screen.

Further, the roadside sound collecting device 30 has a function of transmitting information on the position of the sound source of the vehicle outside sound together with the sound collected outside the vehicle, and when the vehicle outside sound acquisition unit 14 acquires the information, the output unit 15 May display an image showing the direction of the position of the sound source of the vehicle exterior sound on the display device when the vehicle exterior sound is output from the vehicle interior speaker 23. For example, if the output unit 15 controls the head-up display and the sound source of the outside sound is located on the right side of the own vehicle 1, the sound source is located on the right side of the driver's seat of the windshield as shown in FIG. If the sound source direction image 60, which is an image showing the direction of , The sound source direction image 60 may be displayed. The sound source direction image 60 is not limited to the one shown in FIGS. 6 and 7, and may be, for example, an image of an arrow indicating the direction of the sound source.

The roadside sound collecting device 30 may include a plurality of roadside microphones 31 having different sound collecting directions (directions having high sound collecting sensitivity), and may transmit a plurality of vehicle outside sounds having different sound collecting directions to the driving support device 10. In that case, the vehicle exterior sound acquisition unit 14 of the driving support device 10 receives a plurality of vehicle exterior sounds, and for example, the output unit 15 outputs the vehicle exterior sounds from the plurality of vehicle interior speakers 23, thereby giving a sense of realism of the vehicle exterior sounds. Can be enhanced.

Further, for example, when the own vehicle 1 passes the outside sound introduction point and the peripheral sensor of the own vehicle 1 detects a moving body (another vehicle or the like) approaching the own vehicle 1, the output unit 15 However, the vehicle exterior sound whose sound collection direction is the direction in which the moving body is located may be selected from the plurality of vehicle exterior sounds, and the selected vehicle exterior sound may be output from the vehicle interior speaker 23. The occupant of the own vehicle 1 can recognize the approach of the moving body from the sound outside the vehicle output from the in-vehicle speaker 23. When the moving body is another vehicle, the detection of the moving body approaching the own vehicle 1 may be performed by vehicle-to-vehicle communication.

A specific server may intervene in the communication between the driving support device 10 and the roadside sound collecting device 30. That is, the roadside sound collecting device 30 may transmit the collected outside sound to the server, and the outside sound acquisition unit 14 of the driving support device 10 may acquire the outside sound from the server. For example, when there is a lot of traffic at the point where the outside sound is introduced, it is necessary for the roadside sound collecting device 30 to transmit the outside sound to many vehicles. The processing load of the sound device 30 can be reduced. As a result, it is possible to measure the cost reduction of the roadside sound collecting device 30, so that the cost for increasing the number of installation locations of the roadside sound collecting device 30 can be reduced.

Further, the output unit 15 may not output the vehicle exterior sound acquired by the vehicle exterior sound acquisition unit 14 as it is from the vehicle interior speaker 23, but may output it after performing noise reduction processing for removing noise from the vehicle exterior sound. Alternatively, the control unit 34 of the roadside sound collecting device 30 may perform noise reduction processing of the vehicle outside sound before the vehicle outside sound is transmitted from the roadside sound collecting device 30.

<Embodiment 2>
FIG. 8 is a diagram showing a configuration of a driving support system according to the second embodiment. In the configuration of the driving support system of FIG. 8, the vehicle external sound introduction point server 40 is added to the outside of the driving support device 10 and the vehicle external sound introduction point acquisition unit is added to the inside of the driving support device 10 with respect to the configuration shown in FIG. 16 is added.

The vehicle outside sound introduction point server 40 is a server that updates the position information of the vehicle outside sound introduction point and delivers the latest (updated) position information of the vehicle outside sound introduction point to the driving support device 10. The vehicle external sound introduction point acquisition unit 16 of the driving support device 10 acquires information on the position of the vehicle external sound introduction point from the vehicle external sound introduction point server 40 using the communication device 21, and stores the acquired information in the vehicle external sound introduction point storage unit 11. To memorize. That is, the vehicle external sound introduction point acquisition unit 16 updates the position information of the vehicle external sound introduction point stored in the vehicle external sound introduction point storage unit 11 based on the latest information acquired from the vehicle external sound introduction point server 40. .. Since the other configurations and operations of the driving support device 10 are the same as those in the first embodiment, the description thereof will be omitted here.

As mentioned earlier, as the introduction point of the sound outside the vehicle, a point where many traffic accidents occur, an intersection with poor visibility, a railroad crossing, a school road, and the like are selected. However, if traffic conditions change due to road construction or natural disasters, the location where the sound from outside the vehicle should be introduced may change. The external sound introduction point server 40 updates the external sound introduction point in consideration of changes in traffic conditions, and delivers the latest information on the position of the external sound introduction point to the driving support device 10.

In the present embodiment, the information on the position of the outside sound introduction point is distributed by the vehicle outside sound introduction point server 40 at the timing when the outside sound introduction point is changed. However, the distribution of the information on the position of the outside sound introduction point may be performed at a fixed cycle, or may be performed at an arbitrary timing requested by the driving support device 10.

FIG. 9 is a diagram showing the configuration of the external sound introduction point server 40. As shown in FIG. 9, the vehicle external sound introduction point server 40 includes a reception unit 41, a road image storage unit 42, an external sound introduction point update unit 43, an external sound introduction point storage unit 44, and a transmission unit 45.

The receiving unit 41 is a means for the outside sound introduction point server 40 to receive information from the outside. In the present embodiment, the vehicle outside sound introduction point server 40 uses the receiving unit 41 to take a road photographed by, for example, a roadside camera installed on the road, a camera mounted on the vehicle, or a camera carried by a pedestrian. Collect information on the image of the camera and its shooting position. The road image collected by the receiving unit 41 is accumulated in the road image accumulating unit 42 together with the information on the shooting position of the image.

The vehicle exterior sound introduction point update unit 43 updates the vehicle exterior sound introduction point based on the road image accumulated in the road image storage unit 42 and the information of the shooting position thereof. Specifically, the vehicle exterior sound introduction point update unit 43 analyzes the image of the road to detect the point where the traffic accident occurs, the point where the road shape has changed, and the like, and for example, newly sets the point where the traffic accident occurs. It will be added as an outside sound introduction point, or a point where there are no intersections or railroad crossings due to bridge construction will be excluded from the outside sound introduction point. The information on the position of the external sound introduction point updated by the external sound introduction point update unit 43 is stored in the external sound introduction point storage unit 44.

When the information on the position of the external sound introduction point stored in the external sound introduction point update unit 43 is updated, the transmission unit 45 distributes the latest information on the position of the external sound introduction point to the driving support device 10. The latest information on the position of the outside sound introduction point delivered from the transmission unit 45 is acquired by the outside sound introduction point acquisition unit 16 of the driving support device 10 and stored in the outside sound introduction point storage unit 11. The latest information on the position of the external sound introduction point distributed from the external sound introduction point server 40 may be the information on the positions of all the external sound introduction points, or the information on the position of the external sound introduction point increased or decreased by the update. (That is, information on the difference from before the update) may be used.

According to the driving support system of the second embodiment, the driving support device 10 can use the information on the position of the vehicle exterior sound introduction point according to the latest traffic conditions, so that the vehicle exterior sound can be heard from the vehicle interior speaker 23 at a more appropriate position. Can be output from.

The place selected by the vehicle outside sound introduction point update unit 43 of the vehicle outside sound introduction point server 40 as the vehicle outside sound introduction point is basically a place where the roadside sound collecting device 30 is already installed. However, for example, when the administrator and the installer of the roadside sound collecting device 30 are the same or have a tie-up relationship with the vehicle outside sound introduction point server 40, the roadside sound collecting device is promptly moved to the place selected as the vehicle outside sound introduction point. If the 30 can be installed, a place where the roadside sound collecting device 30 is not installed may be selected as the outside sound introduction point. In other words, the selection result of the vehicle exterior sound introduction point by the vehicle exterior sound introduction point update unit 43 can also be used for the maintenance of the roadside sound collecting device 30 as an infrastructure.

In the present invention, each embodiment can be freely combined, and each embodiment can be appropriately modified or omitted within the scope of the invention.

Although the present invention has been described in detail, the above description is exemplary in all embodiments and the invention is not limited thereto. It is understood that innumerable variations not illustrated can be assumed without departing from the scope of the present invention.

1 Own vehicle, 10 Driving support device, 11 External sound introduction point storage unit, 12 Vehicle position acquisition unit, 13 Judgment unit, 14 External sound acquisition unit, 15 Output unit, 16 External sound introduction point acquisition unit, 21 Communication device, 22 Current position calculation device, 23 in-vehicle speaker, 30 roadside sound pickup device, 31 roadside microphone, 32 receiver, 33 transmitter, 34 control unit, 40 external sound introduction point server, 41 receiver, 42 road image storage unit, 43 outside vehicle Sound introduction point update unit, 44 external sound introduction point storage unit, 45 transmitter unit, 50 processing circuit, 51 processor, 52 memory, 60 sound source direction image.

Claims (11)

The outside sound introduction point storage unit that stores the information on the position of the outside sound introduction point specified as the point where the outside sound should be output from the speaker inside the car,
The vehicle position acquisition unit that acquires the position of the own vehicle and
Based on the position of the own vehicle and the position of the outside sound introduction point, a determination unit for determining whether or not the outside sound introduction point is near the own vehicle, and a determination unit.
When the outside sound introduction point is near the own vehicle, the outside sound acquisition unit that acquires the outside sound picked up by the roadside sound collecting device installed at the outside sound introduction point by communication, and the outside sound acquisition unit.
An output unit that outputs the outside sound acquired by the outside sound acquisition unit from a speaker inside the vehicle of the own vehicle, and an output unit.
A driving support device equipped with. It further includes an external sound introduction point acquisition unit that acquires information on the position of the external sound introduction point from a server installed outside the own vehicle.
The driving support device according to claim 1. The vehicle exterior sound acquisition unit acquires information on the position of the sound source of the vehicle exterior sound together with the vehicle exterior sound.
When the output unit outputs the outside sound from the speaker, the output unit causes a display device to display an image indicating the direction of the position of the sound source of the outside sound.
The driving support device according to claim 1. The display device is a head-up display.
The driving support device according to claim 3. The output unit vibrates the seat of the own vehicle when the outside sound is output from the speaker.
The driving support device according to claim 1. The output unit lowers the volume of other audio equipment of the own vehicle when the outside sound is output from the speaker.
The driving support device according to claim 1. The vehicle exterior sound acquisition unit acquires the vehicle exterior sound through a specific server.
The driving support device according to claim 1. The vehicle exterior sound acquisition unit can acquire a plurality of vehicle exterior sounds having different sound collecting directions from the roadside sound collecting device.
When a moving body approaching the own vehicle is detected when the external sound introduction point is near the own vehicle, the output unit collects the direction of the moving body among the plurality of external sounds. The outside sound of the vehicle in the sound direction is output from the speaker.
The driving support device according to claim 1. The output unit performs noise reduction processing on the vehicle exterior sound and then outputs the vehicle exterior sound from the speaker.
The driving support device according to claim 1. The driving support device according to claim 2 and
With the server
It is a driving support system equipped with
The server collects roadside images taken by a roadside camera installed on the road, a camera mounted on a vehicle, or a camera carried by a pedestrian, and information on the shooting position of the image, and is based on the collected information. Update the information on the location of the outside sound introduction point.
Driving support system. The vehicle position acquisition unit of the driving support device acquires the position of the own vehicle,
The determination unit of the driving support device introduces the outside sound near the own vehicle based on the position of the own vehicle and the position of the outside sound introduction point defined as a point where the outside sound should be output from the speaker inside the vehicle. Determine if there is a point,
When the vehicle exterior sound introduction point is near the own vehicle, the vehicle exterior sound acquisition unit of the driving support device communicates the vehicle exterior sound picked up by the roadside sound pickup device installed at the vehicle exterior sound introduction point. Acquired,
The output unit of the driving support device outputs the external sound acquired by the external sound acquisition unit from the speaker inside the vehicle of the own vehicle.
Driving support method.

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