KR102458706B1 - AI-based electric vehicle driving output sound control device - Google Patents

Abstract

The present invention pertains to a driving output sound control device for an AI-based electric vehicle. An automobile driving output sound control device for outputting a virtual sound corresponding to a driving sound in a driving vehicle of a driving motor type, such as electric vehicles and hybrid vehicles, comprises: a speed detection unit detecting speed information of the vehicle; an RPM detection unit detecting motor RPM information of the vehicle; and a sound output unit including a control unit for controlling output of a virtual sound to be output depending on a detected speed value and a detected RPM value in order to output the virtual sound of the vehicle according to the detected values of the speed detection unit and the RPM detection unit. The sound output unit includes a sound generation unit for individually generating and outputting a virtual sound according to a driving route of the vehicle. The sound generation unit includes: a GPS module for detecting route information based on GPS information to acquire the driving route of the vehicle; a route mapping unit for mapping major route information of the vehicle according to the route information detected through the GPS module; and a route information processing unit confirming location-specific characteristic information for the major route information acquired from the route mapping unit, and assigning a virtual sound corresponding to the location-specific characteristic information. In order to output a virtual sound corresponding to the location-specific characteristic information, the route information processing unit controls the output of the virtual sound to the sound output unit by calling the sound from a route sound DB in which the virtual sound information is stored. Therefore, the present invention can promote the safety of vehicle operation.

Description

AI-based electric vehicle driving output sound control device

The present invention relates to an artificial intelligence-based electric vehicle driving output sound control device, and more particularly, to an artificial intelligence-based driving output sound (virtual sound) that can more efficiently control a virtual driving output sound (virtual sound) for driving stability of an electric vehicle. It relates to an electric vehicle driving output sound control device.

Recently, along with the development of automobile technology, environmentally friendly vehicles such as hybrid vehicles driven by electric motor and engine power, electric vehicles driven only by electric motor power, and fuel cell vehicles driven by fuel cell power generation. vehicle) is attracting attention. Accordingly, the driving feeling of the driver and the sound device also act as a factor of purchasing power. For example, in order to improve the sound quality of a sound system for a vehicle, an acoustic electronic device at the time of release is replaced with a new electronic device, or a speaker is additionally installed.

In general, a vehicle operated by an electric driving method such as an electric vehicle, a fuel cell electric vehicle, a hybrid electric vehicle, and a plug-in hybrid electric vehicle produces less vehicle noise when driving at a low speed than a vehicle using an engine. Pedestrians and the visually impaired may have difficulty realizing the approach of these vehicles, so there may be a risk of an accident between the vehicle and the pedestrian.

An electric vehicle (EV) is a vehicle driven by a motor. The drive system of such an electric vehicle includes a battery for supplying power for driving a motor, an inverter connected to the battery to drive and control the motor, a motor connected to the battery to be charged and discharged through the inverter as a vehicle driving source, and the motor It includes a speed reducer that decelerates the rotational force and transmits it to the driving wheels.

In the EV driving mode of such an eco-friendly vehicle, that is, in the driving condition in which the vehicle is driven by the power of the electric motor, the driving noise becomes a very low noise state, so pedestrians (especially the visually impaired) around the vehicle do not recognize the approach of the vehicle. Failure to do so may result in a safety accident.

In order to solve the safety problem caused by the low noise of the vehicle, a virtual sound generator such as an Acoustic Vehicle Alerting System (AVAS) and a Virtual Engine Sound System (VESS) is used to provide the vehicle status. By generating and outputting virtual sound related to

However, in the past, since only virtual sounds related to the vehicle state are output to the outside of the vehicle, the virtual sound may not be transmitted well to pedestrians, there may be an accident risk if pedestrians are not paying attention, and the intention of the driver may be directly transmitted to the outside of the vehicle. can't

To this end, a virtual engine sound system (VESS), which transmits a virtual engine sound to the outside of the vehicle through a speaker, so that pedestrians can easily recognize a vehicle approaching state, is being installed in eco-friendly vehicles. Such a virtual engine sound system includes a speaker installed in a grill part of the vehicle, and the speaker generates a virtual engine sound.

In order to deliver the virtual engine sound to a distant pedestrian, it is necessary to reproduce the virtual engine sound as a low-frequency sound. However, the size of the speaker may be limited according to vehicle specifications, and thus, the conventional virtual engine sound system has a disadvantage in that it is difficult to reproduce low-frequency sound due to the size limitation of the speaker.

Noise generated while driving a vehicle was judged to be an object to be blocked, so a study was conducted to block the noise. However, with the recent development of automobile technology, in the case of hybrid or electric vehicles, which are called eco-friendly vehicles, when driving with only a motor, the engine driving sound is significantly reduced compared to when the engine is driven, so that pedestrians can recognize the approach of the vehicle. There are cases in which this cannot be done, and the sense of speed or driving feeling felt by the driver is significantly reduced. Accordingly, there is a need for a technology that allows a pedestrian to easily recognize the approach of a vehicle while allowing a driver to feel the driving sensation.

In addition, there is a need for a sound reproducing apparatus that can more safely secure driving stability of a low-noise vehicle through a virtual sound output apparatus for optimized sound output according to surrounding conditions of a driving route.

KR 10-2022-0029873 KR 10-2121735 KR 10-2019-0142636 KR 10-2040918 KR 10-2006852 KR 10-1991671 KR 10-2019-0034728

An object of the present invention for solving the above problems is to provide a sound reproducing apparatus for driving stability and pedestrian safety of low-noise vehicles such as electric vehicles and hybrid vehicles.

In particular, an object of the present invention is to provide a sound output device capable of outputting the most efficient sound based on a main driving route of a vehicle.

Another object of the present invention is to provide a reproducing apparatus capable of reproducing sound optimized based on external noise (external sound).

The present invention for achieving the above object is a vehicle driving output sound control apparatus for outputting a virtual sound corresponding to a driving sound in a driving motor type driving vehicle including an electric vehicle and a hybrid vehicle, the speed of the vehicle A speed detection unit for detecting information, an RPM detection unit for detecting the motor RPM information of the vehicle, and a virtual sound of the vehicle according to the detection values of the speed detection unit and the RPM detection unit To be output according to the speed detection value and the RPM detection value a sound output unit including a control unit for controlling the output of a virtual sound, wherein the sound output unit includes a sound generation unit for respectively generating and outputting a virtual sound according to a driving path of a vehicle, wherein the sound generating unit includes a driving path of the vehicle A GPS module for detecting route information based on GPS information to obtain and a path information processing unit for checking characteristic information for each location and allocating a virtual sound corresponding to the characteristic information for each location, wherein the route information processing unit outputs a virtual sound corresponding to the characteristic information for each location. It is characterized in that a sound is called from a path sound DB in which sound information is stored, and a virtual sound is controlled to be output to the sound output unit.

In addition, the sound output unit is configured to further include an external sound input unit for receiving an external sound for each location according to the driving of the vehicle, and in order to selectively output a virtual sound according to the external sound information input from the external sound input unit The path information processing unit outputs a preset virtual sound based on an arbitrary dB setting value of an external sound in the external sound information, and outputs a virtual sound for location-specific characteristic information of the corresponding path based on the external sound. .

In addition, the sound generating unit includes a sound server for providing output virtual sound data according to the characteristic information of the corresponding path, and the sound server generates an output virtual sound according to the external sound information input through the external sound input unit. and a sound learning processing unit for storing and providing to the sound generating unit, wherein the sound generating unit further includes a communication module for receiving virtual sound data from the sound server through a wireless communication network.

The present invention, constructed and operated as described above, provides a virtual sound output device for driving safety and pedestrian safety due to low noise of an electric vehicle or a hybrid vehicle. As a result, there is an advantage in that the safety of vehicle operation can be promoted by outputting .

In particular, the present invention has an advantage in that it is possible to prevent unnecessary noise and improve the vehicle identification of pedestrians by storing information around the corresponding route based on the main driving route and selectively outputting sound through this.

In addition, since the present invention can output a more stable sound based on external noise information, it is possible to provide a virtual sound output device with high satisfaction by resolving the noise inconvenience of pedestrians as a result.

1 is an overall configuration diagram of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention;
2 is a detailed configuration diagram of a sound generating unit of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention;
3 is a detailed configuration diagram of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention;
4 is a block diagram showing another embodiment of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention;
5 is a diagram illustrating an example of path mapping in an artificial intelligence-based electric vehicle driving output sound control device according to the present invention;

Hereinafter, an artificial intelligence-based electric vehicle driving output sound control device according to the present invention will be described in detail with reference to the accompanying drawings.

An artificial intelligence-based electric vehicle driving output sound control device according to the present invention is a vehicle driving output sound control device for outputting a virtual sound corresponding to a driving sound in a driving motor type driving vehicle including an electric vehicle and a hybrid vehicle. , a speed detection unit for detecting the speed information of the vehicle, an RPM detection unit for detecting the motor RPM information of the vehicle, and the speed detection value and RPM detection to output a virtual sound of the vehicle according to the detection values of the speed detection unit and the RPM detection unit and a sound output unit including a control unit for controlling the output of a virtual sound to be output according to a value, wherein the sound output unit includes a sound generating unit for respectively generating and outputting a virtual sound according to a driving route of a vehicle, wherein the sound is generated The unit includes a GPS module detecting route information based on GPS information to obtain a driving route of the vehicle, a route mapping unit mapping main route information of the vehicle according to route information detected through the GPS module, and the route mapping unit and a path information processing unit that checks the characteristic information for each location for the main route information obtained in In order to output the sound, the sound is called from the path sound DB in which the corresponding virtual sound information is stored, and the virtual sound is controlled to be output to the sound output unit.

The artificial intelligence-based electric vehicle driving output sound control device according to the present invention is different from the existing internal combustion engine vehicle according to the driving structure of the driving motor method, such as an electric vehicle or a hybrid vehicle. In order to solve the safety problem, the optimized virtual sound based on the characteristic information (characteristic information on the driving route) for each location that was not satisfied in the various known virtual sound output systems in the method of outputting the driving output sound of the vehicle, that is, the virtual sound The main technical gist is to provide a driving output sound control device capable of outputting or outputting a sound based on an external sound (noise).

In addition, the present invention provides a sound output system of a deep learning method capable of outputting virtual sound based on artificial intelligence according to a sound learning model in order to output an optimized virtual sound when outputting various virtual sounds according to location-specific characteristic information. features to be provided.

1 is an overall configuration diagram of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention.

The driving output sound control device according to the present invention provides optimized driving according to location-specific characteristic information (peripheral target information on a path) and external noise information according to speed information, RPM information, and vehicle path information of a silent vehicle such as an electric vehicle. This is to output an output sound (virtual sound).

First, the speed detection unit 100 for detecting the speed information of the corresponding vehicle and the RPM information detection unit 110 for detecting the RPM information are respectively configured, and the speed detection unit and the RPM detection unit are configured from the ECU or other control device of the vehicle. It is connected to a control device capable of detecting speed information and RPM information to detect the corresponding information.

Accordingly, information for virtual sound output is generated based on the speed information and RPM information obtained from the speed detection unit and the RPM detection unit.

A sound output unit 200 and a sound generation unit 300 are configured to output virtual sound according to speed information and RPM information, respectively.

The sound output unit 200 is controlled through the control unit 210 so that an arbitrary virtual sound according to the speed information and the RPM information can be output. Although basic virtual sound is output, in the present invention, the sound to be output is generated so that the optimized virtual sound can be output based on the route information of the vehicle or based on the external sound (external noise) through the sound generating unit 300. It controls so that it can be output from the sound output unit 200 .

As described above, the sound generating unit 300 is provided with the sound generating unit 300 in order to output a sound optimized according to the characteristic information on the vehicle path or an external sound, which will be described in detail with reference to FIG. 2 below. do it with

2 is a detailed configuration diagram of a sound generating unit of an apparatus for controlling an output sound of an electric vehicle driving based on artificial intelligence according to the present invention.

The sound generating unit 300 according to the present invention identifies route information according to the main route of the vehicle, generates a main route according to the route information, and outputs an optimized virtual sound based on location-specific characteristic information for the main route. output sound is provided.

To this end, the sound generator 300 includes a GPS module 310 and a main route for a route detected through the GPS module 310 in order to detect a GPS-based route in order to track a corresponding route according to the driving of the vehicle. A path mapping unit 320 for generating information (course), a path information processing unit 330 for processing characteristic information for each location on the main path generated by the path mapping unit, and virtual sound data to be output according to the characteristic information It is configured to include the stored path sound DB (340).

The GPS module 310 is a global positioning system (GPS) for detecting a current location using satellite information, and is for detecting location information of a vehicle traveling through the module. For detecting the driving position of the vehicle such as general roads, highways, and exclusive roads in real time, detecting the current position of the vehicle through the coordinate value, and detecting the entire driving route based on the position value obtained through the GPS module One route is generated by detecting route information for the overall vehicle driving through the route mapping unit 320 . For example, the route mapping unit 320 generates one major route information for the main route of the vehicle, such as commuting to and from work, or generates route information for the corresponding section even when a specific route is driven.

In the present invention, using the generated path information, the path information processing unit 330 processes the optimized sound through the characteristic information for each position corresponding to the path. It means facility information according to the location of schools, reading rooms, parks, libraries, art galleries, commercial facilities, hospitals, etc. located on the route.

Accordingly, in the present invention, after detecting characteristic information for each location from the path information generated by the path mapping unit 320 , the path information processing unit 330 matches the virtual sound to be output according to each characteristic information. That is, the virtual sound to be output according to the path is output using the characteristic information. As mentioned above, in the case of schools, reading rooms, parks, libraries, art galleries, etc., noise is prohibited and the vehicle horn is restricted. Accordingly, in the process of outputting the driving output sound of the vehicle, it can be individually output using the characteristic information for each location, and in the present invention, different sounds are output using the characteristic information of the driving route.

In an embodiment, the driving route section may be classified into a general section and a characteristic information section, and a sound A is output in the general section and a sound B is output in the characteristic information section. In the case of sound A, the high-pitched sound is output so that pedestrians can easily recognize the vehicle, and the low-pitched sound is output in the characteristic information section (school, art museum, library, kindergarten).

Accordingly, with respect to the route information of the driving vehicle, route information is obtained from the route mapping unit 320 , and the route information processing unit 330 detects characteristic information from the route information and matches each virtual sound so that the vehicle moves the corresponding route It is to control so that virtual sound for each location can be output when driving.

Meanwhile, the virtual sound to be output according to the characteristic information for each location is stored in the path sound DB 340, and the stored virtual sound data is matched and output is controlled. The route sound DB 340 may upload various sound data by an administrator, and if necessary, set or change sound data matched by the route information processing unit.

By providing the virtual sound generated according to the path information in the sound generating unit 300 to the sound output unit 200, the sound optimized according to the characteristic information for each location is output, and unnecessary noise is not generated in the noise suppression section. It is to output a virtual sound that can give priority to pedestrian safety.

3 is a detailed configuration diagram of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention.

On the other hand, in another embodiment according to the present invention, by outputting each virtual sound according to the characteristic information of the vehicle driving route, pedestrian protection and prevention of ambient noise generation are implemented, and at the same time, a differential sound is output when the virtual sound is output even when the characteristic information is applied. In order to further include an external sound input unit 220 .

The external sound input unit 220 corresponds to a voice input device for detecting the level of an external sound on a driving path in which the vehicle is located, and may correspond to, for example, one microphone device.

That is, the external sound input unit 220 receives ambient noise information on the path where the vehicle is located and determines the virtual sound output range according to the noise level. It is possible to determine the output sound level according to the dB level of the external sound. For example, based on the reference dB value, when the external sound is greater than a certain dB, the virtual sound is controlled to be larger than the basic output, and when the external sound is less than a certain dB, the virtual sound is output less than the basic output.

Accordingly, in the present invention, since the virtual sound output can be determined according to the external sound criterion in addition to the characteristic information for each location of the route, a more precise output sound can be output, and consequently, a stable vehicle driving output sound can be controlled.

4 is a block diagram showing another embodiment of an artificial intelligence-based electric vehicle driving output sound control device according to the present invention.

In the present invention, in order to control the driving output sound of the vehicle, the path sound DB 340 is used to provide an optimized output sound by using the characteristic information for each location according to the driving of the vehicle through various embodiments shown in FIGS. 1 to 3 above. ) is output through the sound data stored in the ), and furthermore, in order to provide more precise virtual sound data, a sound server 400 that provides sound data from the outside and a sound learning processing unit 410 for generating stable sound through deep learning ) is further included.

The sound server 400 is to provide sound data to the path sound DB 340 of the driving output sound control device configured in the vehicle in an upload method, and basically provides real-time sound data through wireless communication. In this case, the sound data may correspond to sound data generated by an operator, and sound data optimized according to location-specific characteristic information or external sound standards may be generated and provided. For example, sound data may be generated in the form of a high-pitched sound, a low-pitched sound, a melody method, an instrument sound source, a special sound source, etc., and the sound generating unit generates sound data by a worker in the sound server 400 . (300).

In addition, the sound learning processing unit 410 configured in the sound server 4000 generates an optimal sound when a change in output sound occurs in consideration of the external sound input unit 220 configured in the sound output unit and characteristic information for each location. To do this, new sound data is generated through deep learning learning. When it is necessary to change the sound from the sound A outputted from the characteristic information for each location to the external sound standard, the sound learning processing unit 410 generates a new virtual sound by comparing it with the external sound reference value and provides it to the sound generating unit 300, , so that it can be output after storing it in the path sound DB 340 .

In this case, the sound generator further includes a separate communication module 350 capable of communicating with the sound server 400 , and through this, receives new sound data or external sound information through communication with the real-time sound server 400 . to provide new sound data to be created.

5 is a diagram illustrating an example of path mapping in an apparatus for controlling an output sound of an electric vehicle driving based on artificial intelligence according to the present invention.

In the present invention, one elementary school and one park were selected for each location in one route information in order to output individual virtual sounds according to location-specific property information of the driving route. It is controlled to output, and the second sound is controlled to be output in the vicinity of the park (red dotted line).

In addition, since the volume of the sound can be controlled according to the reference value of the external sound at the corresponding location through the external sound input unit according to the present invention, an optimized sound can be output.

One route information generated here may correspond to one route generated by the route mapping unit 320 when it is a main route of the vehicle, and the route information processing unit analyzes location-specific characteristic information for the generated route information to control so that appropriate sound is output according to each position.

In addition, the radius area of the characteristic information for each location may be based on a preset value or may be directly selected by an administrator (operator).

The present invention configured as described above provides a virtual sound output device for driving safety and pedestrian safety due to the low noise of an electric vehicle or hybrid vehicle, by outputting an optimized virtual sound according to surrounding information based on the driving route of the vehicle. This has the advantage of improving the safety of vehicle operation.

In particular, the present invention has an advantage in that it is possible to prevent unnecessary noise and improve the vehicle identification of pedestrians by storing information about the corresponding route based on the main driving route and selectively outputting sound through it.

In addition, since the present invention can output a more stable sound based on external noise information, it is possible to provide a virtual sound output device with high satisfaction by resolving the noise inconvenience of pedestrians as a result.

Although the foregoing has been described and illustrated in connection with preferred embodiments for illustrating the principles of the present invention, the present invention is not limited to the construction and operation as so shown and described. Rather, it will be apparent to those skilled in the art that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims. Accordingly, all such suitable alterations and modifications and equivalents are to be considered as being within the scope of the present invention.

100: speed detection unit
110: RPM detection unit
200: sound output unit
210: control unit
220: external sound input unit
300: sound generator
310: GPS module
320: path mapping unit
330: route information processing unit
340: path sound DB
350: communication module
400 : sound server
410: sound learning processing unit

Claims (3)

In a vehicle driving output sound control device for outputting a virtual sound corresponding to a driving sound in a driving motor type driving vehicle including an electric vehicle and a hybrid vehicle,
a speed detection unit detecting speed information of the vehicle;
an RPM detector for detecting RPM information of the motor of the vehicle; and
a sound output unit including a control unit for controlling the output of a virtual sound to be output according to the speed detection value and the RPM detection value in order to output a virtual sound of the vehicle according to the detection values of the speed detection unit and the RPM detection unit;
The sound output unit includes a sound generation unit for respectively generating and outputting virtual sounds according to the driving path of the vehicle;
The sound generator includes a GPS module that detects route information based on GPS information to obtain a driving route of the vehicle, and a route mapping unit that maps main route information of the vehicle according to route information detected through the GPS module; Consists of a path information processing unit that checks the characteristic information for each location for the main route information obtained from the path mapping unit and allocates a virtual sound corresponding to the characteristic information for each location,
The path information processing unit calls a sound from a path sound DB in which the corresponding virtual sound information is stored in order to output a virtual sound corresponding to the characteristic information for each location, and controls the virtual sound to be output to the sound output unit,
The sound output unit is configured to further include an external sound input unit for receiving an external sound for each location according to the driving of the vehicle,
In order to selectively output a virtual sound according to the external sound information input from the external sound input unit, the path information processing unit outputs a preset virtual sound based on an arbitrary dB setting value of the external sound in the external sound information, and Virtual sound for location-specific characteristic information is output based on external sound,
The sound generating unit includes a sound server for providing output virtual sound data according to the characteristic information of the corresponding path,
The sound server further includes a sound learning processing unit for generating and storing an output virtual sound according to the external sound information input through the external sound input unit and providing the generated virtual sound to the sound generating unit,
The sound generator further comprises a communication module for receiving virtual sound data from the sound server through a wireless communication network. delete delete

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