JP2012008815A - On-vehicle voice generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle voice generation device capable of outputting a notification voice for a pedestrian according to an action taken by a driver in response to a warning to the driver.SOLUTION: The on-vehicle voice generation device has a voice control part for performing voice generation control on a voice generator. It also has a vehicle speed information acquisition part for acquiring vehicle speed information indicating the traveling speed of a vehicle from a navigation system or the like. It also has a control part for controlling the voice control part in such a manner that a notification voice is output from the voice generator notifying that a movable body such as a pedestrian is allowed to enter the traveling direction of the vehicle when the vehicle speed indicated by the vehicle speed information is lower than a prescribed threshold value. In addition, it has a brake operation sensing part for sensing operation of a brake device. The control part controls the voice control part in such a manner that an assisting voice is output when the vehicle speed indicated by the vehicle speed information is lower than a prescribed threshold value and operation of the brake device has been continuously sensed for more than a prescribed period of time.

Description

  The present invention relates to an in-vehicle sound generator that is mounted on a vehicle and outputs sound, and more particularly to an in-vehicle sound generator that outputs a notification sound to a pedestrian.

  In recent years, various systems for assisting pedestrians in walking on the road have been developed. For example, a system with an audio output device that outputs a notification sound that informs a pedestrian who is blind is able to cross when the color of the traffic light changes and the vehicle is crossable at an intersection. It has become.

  However, although there is a high possibility that the audio output device as described above is installed at a relatively large intersection, it is often not installed at a small intersection in the suburbs. Therefore, in such an intersection, a dangerous situation may occur for pedestrians. For this reason, it is desired that a pedestrian can cross a pedestrian crossing safely without feeling a fear of a vehicle.

  With respect to the above problem, Patent Document 1 discloses a mobile person monitoring device that detects the presence or absence of a pedestrian crossing in a crossing prohibition place where only signs are installed, and makes pedestrians safe by alerting them. Is disclosed.

  This moving person monitoring device inputs an image in a monitoring area within a predetermined range including a shoulder portion near a crossing road by image input means such as a camera, and extracts a pedestrian from the input image. And the pedestrian who tries to cross the crossing prohibition place other than a pedestrian crossing is detected. This detects the presence or absence of a pedestrian crossing at a prohibited crossing place where only signs are installed, and alerts this.

JP 11-275562 A

  However, in Patent Document 1 and the prior art, there is a technology that detects the presence of a pedestrian and warns the pedestrian or driver, but whether or not the driver recognizes the presence of the pedestrian. There is no disclosure or suggestion about a technique for making a determination and performing notification according to the determination result to a pedestrian.

  For this reason, even if the vehicle has stopped, the pedestrian has to consider the possibility that the vehicle will start unexpectedly. As a result, pedestrians and drivers sometimes fall into a standby state at intersections without traffic lights. In particular, in a large vehicle such as a truck that is difficult for a driver to visually recognize from a pedestrian, the above situation is highly likely to occur.

  For example, a method of outputting a notification sound indicating that the driver recognizes the presence of a pedestrian by pressing a predetermined button provided in the in-vehicle device can be considered for the above problem. However, this method has a problem that the driver has to press the button each time notification is made, which hinders driving.

  The present invention has been made in view of the above-described problems, and is an in-vehicle sound generation device that warns a driver when a pedestrian is sensed. In particular, the notification sound according to the driver's action in response to the warning It is providing the vehicle-mounted audio | voice generator which can be output with respect to a pedestrian.

  In order to achieve the above object, an on-vehicle sound generation device according to the present invention includes a sound control unit that performs sound generation control on a sound generator, and a vehicle speed that indicates a traveling speed of a vehicle on which the sound generator is mounted. In a vehicle sound generator including a vehicle speed information acquisition unit for acquiring information, when a vehicle speed indicated by the vehicle speed information is below a predetermined threshold, a moving body enters a road located in the traveling direction of the vehicle. A control unit is provided for controlling the voice control unit so as to output a notification voice for notifying that it is possible from the voice generator.

  According to this configuration, the in-vehicle sound generation device of the present invention includes the sound control unit that performs sound generation control on the sound generator. Moreover, the vehicle speed information acquisition part which acquires the vehicle speed information which shows the driving speed of the vehicle by which the vehicle-mounted audio | voice generating apparatus is mounted from a positioning navigation apparatus etc. is provided. In addition, when the vehicle speed indicated by the vehicle speed information falls below a predetermined threshold, a notification voice (hereinafter referred to as “auxiliary voice”) indicating that a moving body such as a pedestrian can enter the traveling direction of the vehicle is generated. A control unit for controlling the voice control unit to output from the device.

  In order to achieve the above object, an in-vehicle sound generator according to the present invention includes a brake operation sensing unit that senses an operation on a brake device, and the control unit has a predetermined vehicle speed indicated by the vehicle speed information. And when the operation to the brake device is detected beyond a predetermined time by the brake operation detection unit, the audio control unit is controlled to output the notification audio from the audio generator. It is characterized by.

  According to this configuration, the in-vehicle sound generator includes the brake operation detection unit that detects an operation on the brake device of the vehicle in which the in-vehicle sound generator is mounted. The control unit controls the sound control unit to output an auxiliary sound when the vehicle speed indicated by the vehicle speed information falls below a predetermined threshold value and when an operation on the brake device is continuously detected beyond a predetermined time.

  In order to achieve the above object, the in-vehicle sound generator according to the present invention includes moving body sensing information indicating whether or not a moving body exists in the traveling direction of the vehicle in which the in-vehicle sound generator is mounted. A moving body sensing unit that acquires the moving body sensing information that the moving body is present in the traveling direction, and the vehicle speed indicated by the vehicle speed information is a predetermined threshold value; The voice control unit is controlled so as to output the notification voice from the voice generator when the number is lower.

  According to this configuration, the in-vehicle sound generation device acquires moving body sensing information indicating whether or not a moving body such as a pedestrian exists in the traveling direction of the vehicle on which the in-vehicle sound generation device is mounted. A body sensing unit is provided. The control unit is configured to output an auxiliary sound when the moving body sensing information indicates that a moving body exists in the traveling direction of the vehicle and the vehicle speed indicated by the vehicle speed information is below a predetermined threshold. To control.

  In addition, in order to achieve the above object, the control unit provided in the in-vehicle sound generator of the present invention indicates that the moving body is present in the traveling direction is indicated in the moving body detection information, and the vehicle speed information Is output from the sound generator when the vehicle operation speed is lower than a predetermined threshold value and the brake operation sensing unit senses an operation on the brake device for a predetermined time. The voice control unit is controlled as described above.

  According to this configuration, the control unit indicates that there is a moving body in the traveling direction of the vehicle, the moving body detection information indicates that the vehicle speed indicated by the vehicle speed information is below a predetermined threshold value, and controls the brake device. The voice control unit is controlled to output an auxiliary voice when continuously sensed over a predetermined time.

  In addition, in order to achieve the above object, the control unit provided in the in-vehicle sound generator of the present invention indicates that the moving body is present in the traveling direction is indicated in the moving body detection information, and the vehicle speed information When the vehicle speed indicated by exceeds the threshold value and the operation to the brake device is detected by the brake operation sensing unit, the sound control unit is controlled to output the notification sound from the sound generator. To do.

  According to this configuration, the control unit indicates that there is a moving body such as a pedestrian in the traveling direction of the vehicle, and the vehicle speed indicated by the vehicle speed information exceeds the threshold value described above, and the brake When an operation on the device is sensed by the brake operation sensing unit, the voice control unit is controlled to output an auxiliary voice.

  In order to achieve the above object, the in-vehicle sound generation apparatus of the present invention acquires a captured image obtained by capturing the traveling direction from the imaging device, analyzes the captured image, and the moving body captures an image in the captured image. And a captured image analysis unit that transmits the moving body sensing information to the control unit when the moving body is imaged.

  According to this configuration, the in-vehicle audio generation device includes a captured image analysis unit that acquires a captured image captured in the traveling direction from the imaging device and analyzes the captured image. The captured image analysis unit determines whether or not a moving body such as a pedestrian is included in the captured image based on the analysis result. Then, when it is reflected, the mobile unit detection information indicating that the mobile unit is detected is transmitted to the control unit.

  In order to achieve the above object, the in-vehicle sound generation device of the present invention includes a connection unit that connects an electronic device to the in-vehicle sound generation device, and the sound control unit Performs sound generation control on the sound generator connected by the connection unit, the vehicle speed information acquisition unit acquires the vehicle speed information from the positioning navigation device connected by the connection unit, and the brake operation The sensing unit senses an operation on the brake device by a brake sensor connected by the connecting unit, and the moving body sensing unit acquires the moving body sensing information from the moving body sensing device connected by the connecting unit. The captured image analysis unit acquires a captured image from an imaging device connected by the connection unit.

  According to this configuration, the in-vehicle sound generator includes the connection unit that connects the electronic device to the in-vehicle sound generator. The voice control unit performs voice generation control on the voice generator connected by the connection unit. A vehicle speed information acquisition part acquires vehicle speed information from the positioning navigation apparatus connected by a connection part. The brake operation sensing unit senses an operation on the brake device by a brake sensor connected by the connection unit. The moving body sensing unit acquires moving body sensing information from the moving body sensing device connected by the connection unit. The captured image analysis unit acquires a captured image from the imaging device connected by the connection unit.

  According to the present invention, when a warning indicating the presence of a moving body is given to the driver, it is determined whether or not the vehicle is in a stopped state and a braking operation has been sensed over a predetermined time. When these conditions are satisfied, a notification voice is output to the moving body. As a result, on roads that do not have roadside devices that output alarm sounds, intersections that do not have traffic lights, etc., assist the moving direction of the vehicle, that is, moving bodies such as pedestrians into the roadway. can do. In particular, the pedestrian enters the roadway in situations where it is difficult for the driver to visually recognize the pedestrian, such as a large vehicle such as a truck, and therefore it is difficult for the pedestrian to determine whether or not the driver recognizes the pedestrian. Can help.

  Further, according to the present invention, when a warning is given to the driver by detecting a moving body in the traveling direction of the vehicle, the vehicle speed is detected to some extent and a brake operation as an action for the warning is detected. It is determined whether or not. When these conditions are satisfied, a notification voice is output to the moving body. Thereby, it is possible to notify the moving body more quickly.

It is a block diagram which shows the structure of the vehicle-mounted audio | voice generator of this invention. It is a schematic diagram which shows the relationship between a vehicle, a pedestrian, and a pedestrian crossing. It is a flowchart which shows the processing flow of the alerting | reporting audio | voice output process which concerns on 1st embodiment of this invention. It is a flowchart which shows the process flow of the alerting | reporting audio | voice output process which concerns on 2nd embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings. In addition, embodiment shown here is an example and this invention is not limited to embodiment shown here.
[Embodiment 1]
<1-1. About configuration of in-vehicle device>
FIG. 1 is a block diagram showing an internal configuration of the in-vehicle device 10 (= in-vehicle audio generating device) according to the first embodiment of the present invention and various devices connected to the in-vehicle device 10. The in-vehicle device 10 is mounted on the vehicle 1. The vehicle 1 is a moving body for traveling on a road.

  FIG. 2 is a schematic diagram showing the relationship between the vehicle 1 and the pedestrian 2 (= moving body) at the intersection. A crosswalk 3 is provided at the intersection.

  The vehicle 1 according to the present embodiment is at least a positioning navigation device 20, a camera 30 (= imaging device), a human body sensor 40 (= moving body sensing device), a brake shown in FIG. A sensor 50, a brake 60 (= brake device), and a speaker 70 (= sound generator) are mounted.

  The positioning navigation apparatus 20 includes a 3D gyro and an acceleration sensor (not shown). The 3D gyro generates posture angle information indicating the horizontal angle of the vehicle 1. The acceleration sensor generates speed information indicating the traveling speed and traveling direction of the vehicle 1. The positioning navigation apparatus 20 sends vehicle information including these pieces of information to the in-vehicle apparatus 10. The vehicle information includes vehicle speed information indicating the current traveling speed of the vehicle 1.

  The camera 30 includes an image pickup device such as a CCD (Charge Coupled Device) and an image pickup lens unit. The CCD photoelectrically converts the light image of the subject formed by the imaging lens unit into a captured image of color components of R (red), G (green), and B (blue). Then, this captured image is sent to the in-vehicle device 10.

  The human body sensor 40 is for sensing the pedestrian 2 existing around the vehicle 1. The human body sensor 40 is configured to include, for example, an infrared sensor that detects infrared rays generated from the pedestrian 2.

  Alternatively, the human body detection sensor 40 emits laser light, LED light, or the like and senses the proximity of the pedestrian 2 by its reflected light, or oscillates an ultrasonic wave to sense the proximity of the pedestrian 2 by its reflected wave. A configuration including an ultrasonic sensor, an atmospheric sensor that detects the pedestrian 2 by measuring a change in atmospheric temperature, and the like may be used. The human body sensor 40 sends sensing information (= moving body sensing information) indicating sensing results obtained by these sensors to the in-vehicle device 10.

  The brake sensor 50 is composed of, for example, a piezoelectric element, and is provided on a surface (hereinafter referred to as “mounting surface”) on which a driver's foot is placed with respect to a brake pedal included in the brake 60. The brake sensor 50 outputs a voltage signal corresponding to the depression pressure of the brake pedal to the brake operation sensing unit 15. The piezoelectric element is bonded to the mounting surface with a double-sided tape, for example. Alternatively, in consideration of aesthetics, a piezoelectric element wrapped in an aluminum foil bag may be bonded to the mounting surface with a double-sided tape.

  The speaker 70 is a sound output device that outputs a notification sound (= auxiliary sound) for assisting walking to a pedestrian 2 existing around the vehicle 1. Especially in this embodiment, it uses for outputting the alerting | reporting audio | voice which shows that the driver | operator of the vehicle 1 has recognized the presence of the pedestrian 2 with respect to the pedestrian 2. FIG. The speaker 70 can also be used to output a sound to the driver of the vehicle 1, for example, a warning sound when the pedestrian 2 is detected.

  Next, the internal configuration of the in-vehicle device 10 will be described. The in-vehicle device 10 of the present embodiment includes at least a control unit 11, a vehicle information receiving unit 12 (= vehicle speed information acquiring unit), a captured image receiving unit 13 (= captured image analyzing unit), and a sense information receiving unit 14 (= moving body). Sensing section), a brake operation sensing section 15, a voice control section 16, and a connection section 17. Each unit described above is realized by a microcomputer or a plurality of electronic circuits.

  The control unit 11 organically controls the driving of each member of the in-vehicle device 10 and performs overall control of various information acquisition processing, audio output processing, and the like. The control unit 11 executes various processes by executing a predetermined program on the arithmetic processing device provided in the control unit 11. Details of processing performed by the control unit 11 will be described later.

  The vehicle information receiving unit 12 receives vehicle information indicating the traveling state of the vehicle 1 from the positioning navigation apparatus 20. The vehicle information includes the vehicle speed, traveling direction, inclination angle, and the like of the vehicle 1. Thereby, the control part 11 determines whether the vehicle 1 has stopped. The vehicle information receiving unit 12 may receive vehicle speed information from a device other than this, for example, a speedometer provided in the vehicle 1.

  The captured image receiving unit 13 receives a captured image captured by the camera 30. If necessary, the image is converted into an image format that can be analyzed, for example, a BMP (Bitmap) format or a JPEG (Joint Photographic Experts Group) format.

  Furthermore, the captured image receiving unit 13 performs image analysis of the captured image to determine whether or not the pedestrian 2 existing around the vehicle 1 is reflected in the captured image. When the pedestrian 2 is reflected, a notification indicating that the pedestrian 2 is detected is given to the control unit 11.

  The sensing information receiving unit 14 receives sensing information generated by the human body sensor 40. Based on the sensed information, various information related to the pedestrian 2, such as the number of pedestrians 2, the walking state of the pedestrian 2, the walking speed of the pedestrian 2, and the like are calculated. Based on the calculation result, the control unit 11 determines whether or not the pedestrian 2 exists in the vicinity of the vehicle 1.

  The brake operation sensing unit 15 A / D converts the voltage signal output from the brake sensor 50. Information obtained by A / D conversion, that is, information indicating whether or not the brake pedal is depressed is sent to the control unit 11.

  The sound control unit 16 performs output control for outputting sound from the speaker 70. Specifically, for example, a digital audio signal is decoded to generate an analog audio signal. Then, by applying this analog audio signal to the speaker 70, the speaker 70 is driven to output sound. At this time, the voice control unit 16 adjusts the output volume based on the instruction received from the control unit 11.

The connection unit 17 is a connection interface for connecting the vehicle-mounted device 10 and an external electronic device. For example, the connection unit 17 includes an electronic circuit including a plurality of connection terminals and a communication bus. In the present embodiment, the positioning navigation device 20 to the brake sensor 50 are used to connect to the in-vehicle device 10.
<1-2. Notification audio output processing>
Here, the outline | summary of the alerting | reporting audio | voice output process with respect to the pedestrian 2 which the vehicle-mounted apparatus 10 which concerns on 1st embodiment of this invention implements is demonstrated, using the flowchart of FIG. The processing flow shown in FIG. 3 is started when it is detected that the in-vehicle apparatus 10 is in an operating state and the engine of the vehicle 1 is in a driving state.

  After the start of this process, the control unit 11 determines whether or not the pedestrian 2 is detected in the traveling direction of the vehicle 1 in step S110. As a detection method of the pedestrian 2, for example, the pedestrian 2 is detected by receiving the detection information sent from the human body sensor 40 by the detection information receiving unit 14. Alternatively, the captured image receiving unit 13 receives the captured image sent by the camera 30 and performs image analysis, and detects the pedestrian 2 based on the analysis result.

  It should be noted that the extent to which the traveling direction of the vehicle 1 is defined can be appropriately changed according to the operation mode. For example, an angle of 90 degrees ahead of the vehicle 1 is defined as the traveling direction of the vehicle 1. However, this angle can be appropriately changed within a range not departing from the gist of the present invention. For example, 120 degrees ahead or 180 degrees ahead may be regarded as the traveling direction of the vehicle 1.

  When the pedestrian 2 is not sensed, the process proceeds to step S170 described later. When the pedestrian 2 is detected, the control unit 11 gives a warning to the driver of the vehicle 1 that the pedestrian 2 exists in the traveling direction of the vehicle 1 in step S120. Specifically, for example, an obstacle warning warning mark is displayed on a liquid crystal panel (not shown) included in the in-vehicle device 10 or a warning sound is output from the speaker 70 to give a warning.

  Next, the control part 11 determines whether the vehicle 1 is a stop state in step S130. As a specific determination method, for example, the vehicle information reception unit 12 performs the determination based on the vehicle speed information received from the positioning navigation device 20. And when the vehicle speed which vehicle speed information shows is 0, or when it falls below a predetermined threshold value, it is considered that it is a stop state.

  Next, in step S140, the control unit 11 starts measuring the sensing time of the brake operation from the time when it is determined that the vehicle 1 is in the stopped state. This is performed based on, for example, a voltage signal received from the brake sensor 50 by the brake operation sensing unit 15.

  Next, in step S150, the control unit 11 determines whether or not a brake operation has been detected and the detection time has exceeded a predetermined time.

  Here, when the sensing time exceeds the predetermined time, the control unit 11 controls the voice control unit 16 to output a predetermined notification voice in step S160, and then proceeds to step S170. Note that the content of the notification voice is, for example, content indicating that the driver of the vehicle 1 recognizes the pedestrian 2 and that the pedestrian 2 can enter the road ahead of the vehicle 1.

  If the predetermined time has not been exceeded (N in Step 150), the control unit 11 determines whether or not the release of the brake operation is detected in Step S151. When the release of the brake operation is detected (when the voltage signal cannot be received from the brake sensor 50), the process proceeds to step S170. If release of the brake release is not detected, the brake is being depressed by the driver but the detection time has not reached the predetermined time, so the process proceeds to step S150 again, and the detection time of the detection time continues. Make a decision.

  Next, the control part 11 determines whether the engine of the vehicle 1 is a stop state in step S170. When the engine is not stopped, that is, when the engine is in an operating state, the process proceeds to step S110 again. If the engine is stopped, this process is terminated.

According to the embodiment described above, for example, when the driver is warned that the pedestrian 2 exists in the traveling direction of the vehicle 1, the vehicle 1 is in a stopped state and the brake operation is performed after a predetermined time. When it is detected, a notification voice is output. Thereby, it is possible to assist the pedestrian 2 entering the road from a sidewalk or the like on a road where a roadside device that outputs a notification sound is not provided, an intersection where a traffic light is not provided, or the like.
[Embodiment 2]
<2-1. About configuration of in-vehicle device>
Since it is the same content as Embodiment 1, description is abbreviate | omitted here.
<2-2. Notification audio output processing>
Here, the outline | summary of the alerting | reporting audio | voice output process with respect to the pedestrian 2 which the vehicle-mounted apparatus 10 which concerns on 2nd embodiment of this invention implements is demonstrated, using the flowchart of FIG. In addition, about the process same as the process flow shown in FIG. 3, description shall be abbreviate | omitted by adding the same process number.

  After step S110 and step S120, if it is determined in step S130 that the vehicle 1 is not in a stopped state, the control unit 11 determines in step S131 whether or not a brake operation has been sensed. Note that the method for detecting the brake operation is the same as that in the first embodiment, and thus the description thereof is omitted.

  When the brake operation is not sensed, the process proceeds to step S170. When the brake operation is detected, the process proceeds to step S160, and the sound control unit 16 is controlled so as to output a predetermined notification sound. Note that the content of the notification voice is, for example, content indicating that the driver of the vehicle 1 recognizes the pedestrian 2.

According to the embodiment described above, for example, when the pedestrian 2 is sensed in the traveling direction of the vehicle 1 and the vehicle speed is detected, the brake operation is performed as an action in response to the warning to the driver. At the broken stage, a notification sound for the pedestrian 2 is output. Thereby, it is possible to notify the pedestrian 2 more quickly.
[Other embodiments]
The present invention has been described with reference to the preferred embodiments and examples. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea. be able to.

  Therefore, the present invention can also be applied to the following embodiments.

  (A) In the above embodiment, the pedestrian 2 is detected based on the detection result of the human body sensor 40 and the analysis result of the captured image captured by the camera 30, but the pedestrian is detected by other methods. Form may be sufficient. For example, the form which detects the pedestrian 2 based on the traffic information acquired by connecting a vehicle-to-vehicle communication apparatus or a road-vehicle communication apparatus by these apparatuses may be sufficient.

  (B) In the above-described embodiment, the positioning navigation device 20, the camera 30, the detection sensor 40, and the brake sensor 50 are described as an example of a configuration in which the vehicle-mounted device 10 is externally connected. A part or all of them may be included in the in-vehicle device 10 and may have a unit structure.

  (C) In the above embodiment, each functional unit (for example, the vehicle information receiving unit 12) related to the notification voice output processing of the present invention is configured by a microcomputer or an electronic circuit. 11 may be realized by executing a predetermined program on the arithmetic processing device included in the computer 11.

  (D) In the above embodiment, it is determined whether or not the driver recognizes the pedestrian 2 based on the sensing result of the brake operation. However, the determination may be made using a method other than this. For example, when a warning warning mark is displayed on the liquid crystal panel as a warning to the driver in step S120, an operation of deleting the warning warning mark (for example, pressing the displayed warning warning mark) as the driver's action for this warning. When the control part 11 detects this, the form which determines with the driver | operator recognizing the pedestrian 2 may be sufficient.

  (E) In the above embodiment, the pedestrian 2 is described as an example of a moving body that senses in the traveling direction of the vehicle 1, but other moving bodies such as light vehicles such as bicycles and wheelchairs are also subject to sensing. Can be perceived as. Moreover, the form which does not limit a sensing target to a mobile body may be sufficient. For example, when an obstacle such as illegal parking is in the traveling direction of the vehicle 1, this is detected and a warning is given to the driver, and the possibility of being in the vicinity of the vehicle 1 in accordance with the driver's action for this warning The form which outputs an alerting | reporting audio | voice with respect to a certain mobile body may be sufficient.

  (F) In the above embodiment, as the content of the notification voice to be output, “the driver of the vehicle 1 recognizes the pedestrian 2” and “the pedestrian 2 can enter the road ahead of the vehicle 1. However, it is also possible to output a notification voice having other contents. Moreover, the form which switches the content of alerting | reporting audio | voice according to the surrounding condition of the vehicle 1 may be sufficient. In this case, the surrounding situation of the vehicle 1 is detected based on the analysis result of the captured image and map information obtained from the positioning navigation device 20 or a GPS (Global Positioning System) device (not shown). Then, the content of the notification voice is changed according to the detection result. For example, when a pedestrian 2 is about to enter the roadway from the site of a building such as a condominium, a notification voice is output saying “You are going to the roadway, please proceed slowly”.

1 Vehicle 2 Pedestrian (moving body)
3 Pedestrian crossing 10 Vehicle-mounted device (Vehicle sound generator)
11 control unit 12 vehicle information receiving unit (vehicle speed information acquiring unit)
13 Captured Image Receiving Unit (Captured Image Analysis Unit)
14 Sensing information receiving unit (moving body sensing unit)
DESCRIPTION OF SYMBOLS 15 Brake operation detection part 16 Voice control part 17 Connection part 20 Positioning navigation apparatus 30 Camera (imaging apparatus)
40 Human body sensor (moving body sensing device)
50 Brake sensor 60 Brake (brake device)
70 Speaker (sound generator)

Claims (7)

A voice control unit that performs voice generation control on the voice generator;
In a vehicle-mounted sound generation device including a vehicle speed information acquisition unit that acquires vehicle speed information indicating a traveling speed of a vehicle on which the sound generator is mounted,
When the vehicle speed indicated by the vehicle speed information is lower than a predetermined threshold, a notification sound for notifying that a moving body can enter a road located in the traveling direction of the vehicle is output from the sound generator. A vehicle-mounted voice generation device comprising a control unit that controls the voice control unit. A brake operation sensing unit for sensing an operation on the brake device is provided,
When the vehicle speed indicated by the vehicle speed information falls below a predetermined threshold value and the brake operation sensing unit senses an operation on the brake device for a time exceeding a predetermined time, the control unit performs the notification sound The vehicle sound generator according to claim 1, wherein the sound control unit is controlled to output the sound from the sound generator. A moving body sensing unit that acquires moving body sensing information indicating whether or not a moving body exists in a traveling direction of a vehicle on which the vehicle-mounted sound generation device is mounted;
When the moving body sensing information indicates that there is a moving body in the traveling direction and the vehicle speed indicated by the vehicle speed information is below a predetermined threshold, the control unit outputs the notification sound. The in-vehicle sound generation device according to claim 2, wherein the sound control unit is controlled to output from a sound generator. In the control unit, the moving body detection information indicates that a moving body exists in the traveling direction, and the vehicle speed indicated by the vehicle speed information is less than a predetermined threshold, and the brake operation detection unit The voice control unit is controlled to output the notification voice from the voice generator when an operation with respect to the brake device is detected beyond a predetermined time. In-vehicle audio generator. The control unit indicates that the moving body is present in the traveling direction in the moving body sensing information, the vehicle speed indicated by the vehicle speed information exceeds the threshold value, and the operation on the brake device is controlled by the brake operation. The in-vehicle sound generation device according to claim 3, wherein the sound control unit is controlled to output the notification sound from the sound generator when detected by a detection unit. The captured image obtained by capturing the traveling direction is acquired from the imaging device, the captured image is analyzed, it is determined whether or not the moving object is captured in the captured image, and the moving object is captured The in-vehicle sound generation device according to claim 3, further comprising a captured image analysis unit that transmits moving body sensing information to the control unit. The in-vehicle sound generation device includes a connection unit that connects an electronic device to the in-vehicle sound generation device,
The voice control unit performs voice generation control on a voice generator connected by the connection unit,
The vehicle speed information acquisition unit acquires the vehicle speed information from a positioning navigation device connected by the connection unit,
The brake operation sensing unit senses an operation on the brake device by a brake sensor connected by the connection unit,
The moving body sensing unit acquires the moving body sensing information from a moving body sensing device connected by the connection unit,
The in-vehicle sound generation device according to claim 6, wherein the captured image analysis unit acquires a captured image from an imaging device connected by the connection unit.

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