Vehicle and method of controlling the same

Abstract

A vehicle includes a housing, a passive radiator disposed on a rear surface of the housing, an active speaker disposed on a front surface of the housing and configured to output a virtual engine sound, a partition wall disposed inside the housing such that one side is in contact with a left side surface of the housing and the other side is in contact with a right side surface of the housing, a driver configured to move and rotate the partition wall, and a controller configured to control the driver based on at least one of a transmission gear of the vehicle and a vehicle speed.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle and a control method thereof, and more particularly, to a vehicle capable of reducing noise radiated into the vehicle when outputting a virtual engine sound and a control method thereof. BACKGROUND

[0002] Electric vehicles (EV, HEV, PHEV, etc.) driven by an electric motor have a small engine noise, and thus, when moving at a low speed or moving backward, there is a high risk of a collision accident occurring due to pedestrians not recognizing the vehicle.

[0003] Therefore, in the case where the vehicle moves at a low speed or moves backward, a technology has been developed to output a virtual engine sound through an active speaker so that pedestrians can recognize the vehicle.

[0004] Since the active speaker outputting the virtual engine sound is used only when an output condition of the virtual engine sound is satisfied, it is accommodated in a single housing with a passive radiator and is used to output various sounds inside the vehicle through the passive radiator.

[0005] However, in the case of outputting the virtual engine sound, when the inverted sound radiated to the rear side of the active speaker passes through the passive radiator, noise can be transmitted inside the vehicle, which can cause discomfort to passengers. SUMMARY

[0006] Therefore, an aspect of the present application is to provide a vehicle and a control method thereof for reducing noise that can be introduced into the vehicle through a passive radiator when a virtual engine sound is output through an active speaker.

[0007] According to an aspect of the present application, a vehicle includes a housing, a passive radiator disposed on a rear surface of the housing, an active speaker disposed on a front surface of the housing and configured to output a virtual engine sound, a partition wall disposed inside the housing such that one side thereof is in contact with a left side surface of the housing and the other side thereof is in contact with a right side surface of the housing, a driver configured to move and rotate the partition wall, and a controller configured to control the driver based on at least one of a transmission gear of the vehicle and a vehicle speed.

[0008] The controller can be configured to control the driver such that a gap of air flow between the passive radiator and the active speaker is narrowed when the transmission of the vehicle is in an R gear, and control the driver such that the gap of air flow between the passive radiator and the active speaker is widened when the transmission of the vehicle is not in the R gear.

[0009] The controller can be configured to control the driver so that a distance between the partition wall and the active speaker on a central axis of the active speaker becomes a preset distance when the transmission of the vehicle is in an R range, and the preset distance can be set to 1 / 4 wavelength or more of a lowest frequency of the virtual engine sound.

[0010] The controller can be configured to control the driver so that a minimum distance between the partition wall and the front surface of the housing becomes a preset distance when the transmission of the vehicle is in an R range, and the preset distance can be set to 1 / 4 wavelength or less of a highest frequency of the virtual engine sound.

[0011] The controller can be configured to control the driver so that a gap of air flow between the passive radiator and the active speaker becomes narrow when the vehicle speed is a preset speed or less, and control the driver so that the gap of air flow between the passive radiator and the active speaker becomes wide when the vehicle speed is greater than the preset speed.

[0012] The controller can be configured to control the driver so that a distance between the partition wall and the active speaker on a central axis of the active speaker becomes a preset distance when the vehicle speed is a preset speed or more, and the preset distance can be set to 1 / 4 wavelength or more of a lowest frequency of the virtual engine sound.

[0013] The controller can be configured to control the driver so that a minimum distance between the partition wall and the front surface of the housing becomes a preset distance when the vehicle speed is a preset speed or more, and the preset distance can be set to 1 / 4 wavelength or less of a highest frequency of the virtual engine sound.

[0014] The vehicle can further include a transmission rail installed inside the housing and configured to move the partition wall based on power transmitted from the driver, and a holding device having one end rotatably fixed to the partition wall and the other end rotatably fixed to the inside of the housing.

[0015] The vehicle can further include a transmission rail installed inside the housing, and a holding device having one end rotatably fixed to the partition wall and the other end rotatably fixed to the inside of the housing and configured to lift the partition wall based on power transmitted from the driver.

[0016] The partition wall can have a thickness of 10 mm or more.

[0017] According to an aspect of the present application, there is provided a control method of a vehicle including a housing, a passive radiator provided on a rear surface of the housing, an active speaker provided on a front surface of the housing and configured to output a virtual engine sound, and a partition wall provided inside the housing such that one side is in contact with a left side surface of the housing and the other side is in contact with a right side surface of the housing, the method including moving and rotating the partition wall based on at least one of a transmission gear of the vehicle and a vehicle speed.

[0018] The moving and rotating of the partition wall can include, when the transmission of the vehicle is in an R gear, moving and rotating the partition wall such that a gap of air flow between the passive radiator and the active speaker is narrowed, and when the transmission of the vehicle is not in the R gear, moving and rotating the partition wall such that the gap of air flow between the passive radiator and the active speaker is widened.

[0019] The moving and rotating of the partition wall can include, when the transmission of the vehicle is in the R gear, moving and rotating the partition wall such that a distance between the partition wall and the active speaker on a central axis of the active speaker becomes a preset distance, and the preset distance can be set to 1 / 4 wavelength or more of a lowest frequency of the virtual engine sound.

[0020] The moving and rotating of the partition wall can include, when the transmission of the vehicle is in the R gear, moving and rotating the partition wall such that a minimum distance between the partition wall and the front surface of the housing becomes a preset distance, and the preset distance can be set to 1 / 4 wavelength or less of a highest frequency of the virtual engine sound.

[0021] The moving and rotating of the partition wall can include, when the vehicle speed is a preset speed or less, moving and rotating the partition wall such that the gap of air flow between the passive radiator and the active speaker is narrowed, and when the vehicle speed is higher than the preset speed, moving and rotating the partition wall such that the gap of air flow between the passive radiator and the active speaker is widened.

[0022] The moving and rotating of the partition wall can include, when the vehicle speed is a preset speed or more, moving and rotating the partition wall such that the distance between the partition wall and the active speaker on the central axis of the active speaker becomes a preset distance, and the preset distance can be set to 1 / 4 wavelength or more of the lowest frequency of the virtual engine sound.

[0023] The moving and rotating of the partition wall can include, when the vehicle speed is a preset speed or more, moving and rotating the partition wall such that a minimum distance between the partition wall and the front surface of the housing becomes a preset distance, and the preset distance can be set to 1 / 4 wavelength or less of the highest frequency of the virtual engine sound.

[0024] The vehicle can further include a transfer rail installed inside the housing and configured to move the partition wall based on power transferred from the driver; and a holding device having one end rotatably fixed to the partition wall and the other end rotatably fixed to the inside of the housing, moving and rotating the partition wall can include controlling the driver to provide power to the transfer rail.

[0025] The vehicle can further include a transfer rail installed inside the housing; and a holding device having one end rotatably fixed to the partition wall and the other end rotatably fixed to the inside of the housing and configured to lift the partition wall based on power transferred from the driver, moving and rotating the partition wall can include controlling the driver to provide power to the holding device.

[0026] The partition wall can have a thickness of 10 mm or more. BRIEF DESCRIPTION OF DRAWINGS

[0027] These and / or other aspects of the present application will become apparent and more readily appreciated from the following description, considered in connection with the accompanying drawings in which:

[0028] Figure 1 FIG. 1 is a schematic view showing a vehicle of one embodiment of the present application.

[0029] Figure 2 FIG. 3 is a schematic view showing an internal structure of a housing provided in a vehicle of one embodiment of the present application.

[0030] Figure 3 FIG. 6 is a control block diagram of a vehicle of one embodiment of the present application.

[0031] Figure 4 FIG. 8 is a flowchart showing vehicle control of one embodiment of the present application.

[0032] Figure 5 FIG. 10 shows a state in which a partition wall provided inside a housing in a vehicle of one embodiment of the present application is housed.

[0033] Figure 6 FIG. 11 shows a state in which a partition wall provided inside a housing in a vehicle of one embodiment of the present application is deployed. DETAILED DESCRIPTION

[0034] Throughout the specification, the same reference numerals will be used for the same elements throughout the specification. Not all elements of embodiments of the present application will be described, and description of elements well known in the art or elements overlapping each other in embodiments will be omitted.

[0035] Reference will now be made in detail embodiments of the application, examples of which are illustrated in the accompanying drawings and described below. While the application will be described in conjunction with the exemplary embodiments, it will be understood that they are not intended to limit the application to those exemplary embodiments. On the contrary, the application is intended to cover all alternatives, modifications, equivalents and other embodiments that can be included within the spirit and scope of the application as defined by the appended claims.

[0036] In the following description, like reference numerals refer to like elements throughout the description. The present description does not describe all elements of the embodiments, and there is no overlap between the general contents or embodiments in the technical field to which the exemplary embodiments of the present application belong. Terms such as "unit", "module", "member", and "block" can be implemented as hardware or software. According to the embodiments, a plurality of "units", "modules", "members", and "blocks" can be implemented as a single component, or a single "unit", "module", "member", and "block" can include a plurality of components.

[0037] It should be understood that when an element is referred to as being "connected" to another element, it can be directly or indirectly connected to the other element, where indirect connection includes "connection through a wireless communication network".

[0038] In addition, when a part "includes" or "comprises" an element, unless there is a specific description to the contrary, the part can further include other elements, and the other elements are not excluded.

[0039] The terms first, second, and the like are used to distinguish one component from another component, and the components are not limited by the above terms.

[0040] Unless there is a clear distinction in the context, the expression used as singular also includes the expression used as plural.

[0041] Reference numerals used in the operation are used for convenience of description, and are not intended to describe the order of the operation, and the steps can be performed in different order, unless otherwise specified.

[0042] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings.

[0043] Figure 1 is a schematic view showing a vehicle of one embodiment of the present application.

[0044] With reference to Figure 1 , a vehicle 10 of one embodiment of the present application can include a housing 100 in which an active speaker 120 and a passive radiator 110 are accommodated.

[0045] The active speaker 120 can output a virtual engine sound and / or a low frequency band sound corresponding to a sound output inside the vehicle 10.

[0046] Specifically, the active speaker 120 can output a virtual engine sound in a condition in which attention of a pedestrian is required (for example, when a speed of the vehicle 10 is a preset speed or less, or a gear position of the vehicle 10 is in R gear).

[0047] In this case, the preset speed can be set as a reference speed for low-speed driving, for example, can be set as 30 km / h, but is not limited thereto.

[0048] A sound source of the virtual engine sound can be composed of a high frequency band so that a pedestrian can easily recognize it. For example, a frequency band of the virtual engine sound can be 300 Hz ~ 4000 Hz.

[0049] In addition, the active speaker 120 can output a driving sound corresponding to a low frequency band sound among various sounds output inside the vehicle 10, and the passive radiator 110 can resonate and output the low frequency band sound according to the driving sound output from the active speaker 120.

[0050] As such, the passive radiator 110 is an auxiliary low frequency generator, also called an auxiliary bass radiator (ABR). The passive radiator 110 is a flat panel speaker unit that does not have a voice coil or a magnetic structure, which itself cannot generate a sound, but can output a deep sound by working in response to air pressure inside the housing 100 changed by the driving sound.

[0051] The housing 100 in some embodiments of the present application can be disposed without limitation at a position allowing a pedestrian to effectively recognize a virtual engine sound output from the active speaker 120, and the housing 100 can serve as an outer case of the active speaker 120 and the passive radiator 110.

[0052] For example, the housing 100 can be disposed behind a front bumper or a grill of the vehicle 10, but is not limited thereto.

[0053] Hereinafter, for convenience of description, a surface to which the active speaker 120 is attached is defined as a front surface of the housing 100, and a surface to which the passive radiator 110 is attached is defined as a rear surface of the housing 100. In this case, the front surface of the housing 100 can denote a surface facing the outside of the vehicle 10, and the rear surface of the housing 100 can denote a surface facing the inside of the vehicle 10.

[0054] Figure 2 is a schematic view showing an internal structure of a housing disposed in a vehicle according to some embodiments of the present application.Figure 3 is a control block diagram of a vehicle of some embodiments of the present application.

[0055] Referring to Figure 2 and Figure 3 The passive radiator 110 can be disposed on the rear surface of the housing 100, and the active speaker 120 can be disposed on the front surface of the housing 100.

[0056] The partition wall 101 can be disposed inside the housing 100 so that one side is in contact with the left side surface of the housing 100 and the other side is in contact with the right side surface of the housing 100.

[0057] When a virtual engine sound is output from the active speaker 120, a phase sound opposite to the virtual engine sound can be radiated into the housing 100.

[0058] The partition wall 101 can block the phase sound opposite to the virtual engine sound radiated into the housing 100 from reaching the passive radiator 110.

[0059] To this end, the partition wall 101 can be made of an injection-molding material such as acrylonitrile, butadiene, styrene (ABS), or polyamide (PA) having high density, and can be manufactured with a thickness of at least 10 mm or more so as to effectively prevent sound waves and prevent internal resonance.

[0060] The transfer track 102 can be installed inside the housing 100 to move the partition wall 101 in the front surface direction or the rear surface direction of the housing 100.

[0061] In this case, a portion of the partition wall 101 can be in contact with the transfer track 102.

[0062] The transfer track 102 can move the partition wall 101 in the front surface direction or the rear surface direction of the housing 100 based on a driving force provided from the driver 220, and can move the partition wall 101 in the front surface direction or the rear surface direction of the housing 100 in response to a horizontal force applied to the partition wall 101.

[0063] As the transfer track 102, various configurations can be employed so as to allow the partition wall 101 to move even in the case where a small force is applied to the partition wall 101. For example, the transfer track 102 can be composed of a plurality of rollers. Due to the transfer track 102, the partition wall 101 is able to easily move in the horizontal direction when a force in the horizontal direction is applied to the partition wall 101.

[0064] When the transfer track 102 moves the partition wall 101 based on the driving force provided from the driver 220, the transfer track 102 can be made of a material having strong friction, or can include a fixing member capable of fixing a portion of the partition wall 101.

[0065] That is, the transfer track 102 can serve as a conveyor of the conveying system.

[0066] Further, the holding device 103 for raising one end portion of the partition wall 101 in the upper surface direction of the housing 100 can be installed inside the housing 100.

[0067] One end portion of the holding device 103 can be rotatably fixed to the partition wall 101, and the other end portion can be rotatably fixed to the inside of the housing 100.

[0068] Similarly, the holding device 103 can raise the partition wall 101 in the upper surface direction of the housing 100 or lower the partition wall 101 in the lower surface direction in response to a horizontal force applied to the partition wall 101 based on a driving force provided from the driver 220, and can raise the partition wall 101 in the upper surface direction of the housing 100 or lower the partition wall 101 in the lower surface direction in response to a horizontal force applied to the partition wall 101.

[0069] At least one of the transfer track 102 or the holding device 103 can receive a driving force from the driver 220, and the partition wall 101 can move and rotate based on the driving force.

[0070] That is, the driver 220 can move and rotate the partition wall 101.

[0071] Specifically, when the driver 220 provides a driving force to the transfer track 102 so that a portion of the partition wall 101 moves in the front surface direction, the portion of the partition wall 101 can be raised to the top by rotating both end portions of the holding device 103 (for balancing the force).

[0072] As another example, when the driver 220 provides a driving force to the holding device 103 so that the holding device 103 rotates clockwise, a force in the front surface direction of the housing 100 can act on the partition wall 101, and a portion of the partition wall 101 can easily move in the front surface direction of the housing 100 along the transfer track 102.

[0073] The structure for moving and rotating the partition wall 101 is not limited to the above-described example, and various technologies within a conventional technical range can be employed.

[0074] In this way, the driver 220 can move and rotate the partition wall 101 based on a control signal of the controller 210.

[0075] Specifically, the driver 220 can include a driving motor that generates a driving force for moving and rotating the partition wall 101 in various configurations, and a driving circuit that supplies driving electric power to the driving motor according to a control signal from the controller 210.

[0076] The driving motor can receive driving power from the driving circuit and convert the supplied driving power into a rotational force. In some embodiments of the present application, the holding device 103 can be rotated by the converted rotational force, and the transfer rail 102 can be moved in a horizontal direction by the converted rotational force.

[0077] For example, the rotational force generated by the driving motor can be transmitted to the holding device 103 and / or the transfer rail 102 through a gear or the like. In other words, the driving motor can rotate the holding device 103 or move the transfer rail 102 through a gear or the like.

[0078] As another example, the rotational force generated by the driving motor can be transmitted to the holding device 103 and / or the transfer rail 102 through a fluid and a piston.

[0079] Such a driving circuit can include a switching element, such as a relay, for supplying driving power to the driving motor or cutting off the driving power.

[0080] The controller 210 in some embodiments of the present application can control the driver 220 based on at least one of the transmission 200 gear position of the vehicle 10 and the speed of the vehicle 10.

[0081] That is, the controller 210 can change the position of the partition wall 101 by receiving information about the transmission 200 gear position of the vehicle 10 and vehicle speed information and controlling the driver 220 based thereon.

[0082] The controller 210 can include at least one memory storing a program for performing the above-described operations and the operations described below, and at least one processor executing the stored program. When the controller 210 includes a plurality of memories and a plurality of processors, the plurality of memories and the plurality of processors can be integrated into one chip, or can be physically separated.

[0083] The vehicle speed sensor 205 can acquire speed information of the vehicle 10 and transmit the acquired speed information to the controller 210.

[0084] In addition, the transmission 200 can transmit gear position information to the controller 210.

[0085] In this case, various types of information can be transmitted using a controller area network (CAN) communication method. That is, in order to control various electrical loads installed on the vehicle 10 and communicate between various electrical loads, a communication network is configured in the vehicle 10, the communication network including a body network, a multimedia network, and a chassis network, and each of the networks separated from each other in this way can be connected through the controller 210 so as to transmit and receive CAN communication messages between each other.

[0086] In the foregoing, the structure of the housing 100 included in the vehicle 10 and various configurations for moving and rotating the partition wall 101 within the housing 100 have been described.

[0087] In the following, the control method of the vehicle 10 using the above-described configurations will be described in detail.

[0088] Figure 4 is a flowchart showing vehicle control of some embodiments of the present application. Figure 5 shows a state in which the partition wall housed inside the housing provided in the vehicle of some embodiments of the present application is retracted. Figure 6 shows a state in which the partition wall housed inside the housing provided in the vehicle of some embodiments of the present application is deployed.

[0089] Reference Figure 4 When the transmission 200 of the vehicle 10 is not in the R range and the vehicle speed is greater than the preset speed (NO in step 1000), the controller 210 can control the driver 220 so that the partition wall 101 inside the housing 100 is retracted (step 1050).

[0090] The meaning that the partition wall 101 is retracted can mean that the partition wall 101 is disposed so as not to interfere with the air flow between the active speaker 120 and the passive radiator 110.

[0091] Reference Figure 5 In the state in which the partition wall 101 is retracted, the partition wall 101 can be disposed in contact with the lower surface. Thus, the drive sound output from the active speaker 120 can be effectively transmitted to the passive radiator 110. However, the state in which the partition wall 101 is retracted does not mean only the state in which the partition wall 101 is positioned in contact with the lower surface, but can also mean any form in which the partition wall 101 is arranged so as not to interfere with the air flow between the active speaker 120 and the passive radiator 110.

[0092] That is, when the active speaker 120 does not output the virtual engine sound, the controller 210 can retract the partition wall 101 so that the drive sound output from the active speaker 120 can be effectively transmitted to the passive radiator 110.

[0093] Conversely, in the case where the transmission 200 of the vehicle 10 is in the R range or the transmission 200 of the vehicle 10 is in the D range, when the speed of the vehicle 10 is the preset speed or less (YES in step 1000), the controller 210 can control the driver 220 so that the partition wall 101 is deployed (step 1100).

[0094] This is because the virtual engine sound can be output from the active speaker 120 when the speed of the vehicle 10 is a preset speed or less, in a case where the transmission 200 of the vehicle 10 is in the R range or the transmission 200 of the vehicle 10 is in the D range. The preset speed refers to a reference speed used as a reference for virtual engine sound output.

[0095] The meaning that the partition wall 101 is deployed can mean that the partition wall 101 is disposed to interfere with air flow between the active speaker 120 and the passive radiator 110.

[0096] Reference Figure 6 When the partition wall 101 is deployed, the partition wall 101 can be inclined at a certain angle to surround the active speaker 120. Accordingly, the anti-phase sound of the virtual engine sound output from the active speaker 120 can not be transmitted to the passive radiator 110.

[0097] That is, when the active speaker 120 outputs the virtual engine sound, the controller 210 can deploy the partition wall 101 so that the anti-phase sound of the virtual engine sound output from the active speaker 120 is not transmitted to the passive radiator 110.

[0098] In some embodiments of the present application, by not outputting the anti-phase sound of the virtual engine sound into the vehicle 10 through the passive radiator 110, it is possible to prevent noise from being generated inside the vehicle 10.

[0099] Thereafter, when the R range of the transmission 200 is released (Yes in step 1200), the controller 210 can control the driver 220 so that the partition wall 101 is housed again (step 1300).

[0100] Alternatively, the controller 210 controls the driver 220 so that, in a state where the transmission 200 is in the D range, when the speed of the vehicle 10 is greater than the preset speed (Yes in step 1200), the partition wall 101 is housed again (step 1300).

[0101] In this way, when the transmission 200 of the vehicle 10 is in the R range, the controller 210 controls the driver 220 so that the gap through which air can flow between the passive radiator 110 and the active speaker 120 is narrowed. In addition, when the transmission 200 of the vehicle 10 is not in the R range, the controller 210 can control the driver 220 so that the gap through which air can flow between the passive radiator 110 and the active speaker 120 is widened.

[0102] In addition, the controller 210 controls the driver 220 so that the air flowable gap between the passive radiator 110 and the active speaker 120 becomes narrow when the speed of the vehicle 10 is a preset speed or less. In addition, when the speed of the vehicle 10 is greater than the preset speed, the controller 210 can control the driver 220 so that the air flowable gap between the passive radiator 110 and the active speaker 120 becomes wide.

[0103] Hereinafter, the arrangement of the partition wall 101 in the state in which the partition wall 101 is deployed will be described in detail.

[0104] Referring back to Figure 6 It can be confirmed that the partition wall 101 is deployed. Hereinafter, for convenience of explanation, it is assumed that the frequency band of the sound source of the virtual engine sound is from a first frequency to a second frequency. In this case, the first frequency is the minimum frequency of the virtual engine sound, and the second frequency is the maximum frequency of the virtual engine sound.

[0105] Since the virtual engine sound mainly utilizes a high frequency band sound source, and the frequency band for driving the passive radiator 110 is a low frequency band, the first frequency is higher than the maximum frequency of the driving sound for driving the passive radiator 110.

[0106] The distance P1 between the partition wall 101 and the active speaker 120 on the central axis of the active speaker 120 can be preset according to the first frequency of the virtual engine sound. That is, the distance between the partition wall 101 and the active speaker 120 on the central axis of the active speaker 120 can be a first preset distance P1.

[0107] Specifically, the first preset distance P1 can be preferably set to 1 / 4 wavelength or more of the first frequency.

[0108] For example, assuming that the first frequency is 300 Hz, the first preset distance P1 can be set to about 30 cm or more, that is, 1 / 4 wavelength of 300 Hz. This can be derived from the relationship between the frequency, the wavelength, and the speed of sound (341 m / s).

[0109] Specifically, 1 / 4 wavelength of 300 Hz can be derived as a value obtained by dividing the speed of sound by the frequency and multiplying the value by 1 / 4.

[0110] In addition, the minimum distance P2 between the partition wall 101 and the front surface of the housing 100 can be preset according to the second frequency when the partition wall 101 is deployed. That is, the minimum distance between the partition wall 101 and the front surface of the housing 100 can be a second preset distance P2.

[0111] In this case, the minimum distance between the partition wall 101 and the front surface of the housing 100 can represent the width of the gap formed between the partition wall 101 and the front surface of the housing 100.

[0112] Specifically, the second preset distance P2 can be preferably set to 1 / 4 wavelength or less of the second frequency.

[0113] For example, assuming that the second frequency is 1000 Hz, the second preset distance P2 can be set to about 8 cm or less, which is 1 / 4 wavelength of 1000 Hz.

[0114] By arranging the partition wall 101 to satisfy the above condition, the sound wave of the high frequency band is reflected by the partition wall 101, and the energy transmitted to the opposite side of the partition wall 101 can be greatly reduced. However, the sound wave of the low frequency band is hardly affected by the partition wall 101, and can be transmitted to the opposite side of the partition wall 101. Therefore, the sound wave having the opposite phase to the virtual engine sound output from the active speaker 120 is blocked, and the drive sound output from the active speaker 120 can be transmitted to the passive radiator 110.

[0115] That is, if the transmission 200 of the vehicle 10 is in the R range or the speed of the vehicle 10 is a preset speed or more, the controller 210 can control the driver 220 so that the distance between the partition wall 101 and the active speaker 120 on the center axis of the active speaker 120 becomes the first preset distance P1. In this case, the first preset distance P1 can be set to be equal to or greater than 1 / 4 wavelength of the lowest frequency of the sound source of the virtual engine sound.

[0116] In addition, when the transmission 200 of the vehicle 10 is in the R range or the speed of the vehicle 10 is a preset speed or more, the controller 210 controls the driver 220 so that the minimum distance between the partition wall 101 and the front surface of the housing 100 becomes the second preset distance P2. The second preset distance P2 can be set to 1 / 4 wavelength or less of the highest frequency of the sound source of the virtual engine sound.

[0117] The at least one memory included in the controller 210 can store information on the first preset distance P1 and information on the second preset distance P2. Alternatively, the at least one memory included in the controller 210 can store control signal information to be transmitted to the driver 220 so that the distance between the partition wall 101 and the active speaker 120 on the center axis of the active speaker 120 becomes the first preset distance P1, and so that the minimum distance between the partition wall 101 and the front surface of the housing 100 becomes the second preset distance P2.

[0118] In some embodiments of the present application, when the virtual engine sound is output, the sound wave having the opposite phase to the virtual engine sound can be blocked, and only the drive sound can be effectively transmitted to the passive radiator 110.

[0119] According to the present application, when a virtual engine sound is output through an active speaker, passenger satisfaction can be improved by reducing noise introduced into a vehicle.

[0120] On the other hand, the disclosed exemplary embodiments can be implemented in the form of a recording medium for storing instructions executable by a computer. The instructions can be stored in the form of program codes, and when executed by a processor, the instructions can generate program modules to perform the operations of the disclosed exemplary embodiments. The recording medium can be implemented as a computer-readable recording medium.

[0121] The computer-readable recording medium includes various recording media that can decode instructions by a computer. For example, there can be a read-only memory (ROM), a random access memory (RAM), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, etc.

[0122] As described above, the disclosed exemplary embodiments have been described with reference to the accompanying drawings. Although exemplary embodiments of the present application have been shown and described, it will be understood by those skilled in the art that modifications can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle comprising: case; A passive radiator is disposed on the rear surface of the housing; An active speaker is mounted on the front surface of the housing and configured to output virtual engine sounds; A partition wall is disposed inside the housing, wherein a first side of the partition wall contacts the left side surface of the housing and a second side of the partition wall contacts the right side surface of the housing; A drive configured to move and rotate the partition wall; A controller configured to control the drive based on at least one of the vehicle's transmission gear or vehicle speed.

2. The vehicle according to claim 1, wherein, The controller is configured as follows: When the vehicle's transmission is in reverse (R), the driver is controlled to narrow the gap that allows air to flow between the passive radiator and the active speaker. When the vehicle's transmission is not in reverse (R), the control driver widens the gap between the passive radiator and the active speaker to allow airflow.

3. The vehicle according to claim 1, wherein, The controller is configured as follows: When the vehicle's transmission is in reverse (R) gear, the control driver is set at a preset distance between the partition wall and the active speaker on the central axis of the active speaker, wherein the preset distance is at least 1 / 4 wavelength of the lowest frequency of the virtual engine sound.

4. The vehicle according to claim 1, wherein, The controller is configured as follows: When the vehicle's transmission is in reverse (R), the driver is controlled to set a preset distance between the partition wall and the front surface of the housing, wherein the preset distance is equal to or less than 1 / 4 wavelength of the highest frequency of the virtual engine sound.

5. The vehicle according to claim 1, wherein, The controller is configured as follows: When the vehicle speed is equal to or less than the preset speed, the driver is controlled to narrow the gap between the passive radiator and the active speaker, allowing air to flow. When the vehicle speed exceeds the preset speed, the control driver widens the gap between the passive radiator and the active speaker to allow air to flow.

6. The vehicle according to claim 1, wherein, The controller is configured as follows: When the vehicle speed is equal to or greater than a preset speed, the control driver is set at a preset distance between the partition wall and the active speaker on the central axis of the active speaker, wherein the preset distance is at least 1 / 4 wavelength of the lowest frequency of the virtual engine sound.

7. The vehicle according to claim 1, wherein, The controller is configured as follows: When the vehicle speed is equal to or greater than a preset speed, the driver is controlled to set a preset distance between the partition wall and the front surface of the housing, wherein the preset distance is equal to or less than 1 / 4 wavelength of the highest frequency of the virtual engine sound.

8. The vehicle according to claim 1, further comprising: The transfer track is installed inside the housing and configured to move the partition wall based on power transmitted from the drive. A retaining device, wherein a first end of the retaining device is rotatably fixed to a partition wall, and a second end of the retaining device is rotatably fixed to the interior of the housing.

9. The vehicle according to claim 1, further comprising: The conveyor track is installed inside the housing; as well as A retaining device configured to raise a partition wall based on power transmitted from a drive, wherein a first end of the retaining device is rotatably fixed to the partition wall and a second end of the retaining device is rotatably fixed to the interior of the housing.

10. The vehicle according to claim 1, wherein, The partition wall has a thickness of at least 10 mm.

11. A method for controlling a vehicle, comprising: The partition wall is moved and rotated based on at least one of the vehicle's transmission gear and vehicle speed, wherein the vehicle includes: case; A passive radiator is disposed on the rear surface of the housing; An active speaker is mounted on the front surface of the housing and configured to output virtual engine sounds; A partition wall is disposed inside the housing, wherein a first side of the partition wall contacts the left side surface of the housing and a second side of the partition wall contacts the right side surface of the housing.

12. The control method according to claim 11, wherein, The movable and rotating partition walls include: When the vehicle's transmission is in reverse (R) gear, the partition wall is moved and rotated to narrow the gap that allows air to flow between the passive radiator and the active speaker. When the vehicle's transmission is not in reverse (R), the partition wall is moved and rotated to widen the gap between the passive radiator and the active speaker, allowing air to flow.

13. The control method according to claim 11, wherein, The movable and rotating partition walls include: When the vehicle's transmission is in reverse (R) gear, the partition wall is moved and rotated to set a preset distance between the partition wall and the active speaker on the central axis of the active speaker, wherein the preset distance is at least 1 / 4 wavelength of the lowest frequency of the virtual engine sound.

14. The control method according to claim 11, wherein, The movable and rotating partition walls include: When the vehicle's transmission is in reverse (R) gear, the partition wall is moved and rotated to set a preset distance between the partition wall and the front surface of the housing, wherein the preset distance is equal to or less than 1 / 4 wavelength of the highest frequency of the virtual engine sound.

15. The control method according to claim 11, wherein, The movable and rotating partition walls include: When the vehicle speed is equal to or less than the preset speed, the partition wall is moved and rotated to narrow the gap between the passive radiator and the active speaker, allowing air to flow. When the vehicle speed exceeds the preset speed, the partition wall is moved and rotated to widen the gap between the passive radiator and the active speaker, allowing air to flow.

16. The control method according to claim 11, wherein, The movable and rotating partition walls include: When the vehicle speed is equal to or greater than a preset speed, the partition wall is moved and rotated to be set at a preset distance between the partition wall and the active speaker on the central axis of the active speaker, wherein the preset distance is at least 1 / 4 wavelength of the lowest frequency of the virtual engine sound.

17. The control method according to claim 11, wherein, The movable and rotating partition walls include: When the vehicle speed is equal to or greater than a preset speed, the partition wall is moved and rotated to set a preset distance between the partition wall and the front surface of the housing, wherein the preset distance is equal to or less than 1 / 4 wavelength of the highest frequency of the virtual engine sound.

18. The control method according to claim 11, further comprising: Power is supplied to a transport track, which is mounted inside the housing and configured to move a partition wall based on power transmitted from a drive. The vehicle further includes a retaining device, a first end of which is rotatably fixed to the partition wall and a second end of which is rotatably fixed to the interior of the housing.

19. The control method according to claim 11, further comprising: Power is supplied to a retaining device configured to raise the partition wall based on power transmitted from a drive, wherein a first end of the retaining device is rotatably fixed to the partition wall, and a second end of the retaining device is rotatably fixed to the interior of the housing. The vehicle further includes a transport track installed inside the housing.

20. The control method according to claim 11, wherein, The partition wall has a thickness of at least 10 mm.

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