CN109131063B - Electric automobile sound warning device and method - Google Patents
Electric automobile sound warning device and method Download PDFInfo
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- CN109131063B CN109131063B CN201710457500.1A CN201710457500A CN109131063B CN 109131063 B CN109131063 B CN 109131063B CN 201710457500 A CN201710457500 A CN 201710457500A CN 109131063 B CN109131063 B CN 109131063B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
- B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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Abstract
The embodiment of the invention provides a sound warning device and method for an electric automobile, and belongs to the technical field of electric automobile warning. Electric automobile sound warning device includes: the working parameter acquisition unit is used for acquiring a first vehicle working parameter related to the electric vehicle; a supplementary sound determination unit for determining a first supplementary sound component based on a first vehicle operating parameter in combination with a supplementary sound database, wherein the supplementary sound database stores supplementary sound mapping relations between a plurality of vehicle operating parameters and a plurality of supplementary sound components; and the warning sound output unit is used for compensating the first motor sound by using the first supplementary sound component to generate a target warning sound and outputting the target warning sound to the outside of the electric automobile. Therefore, a brand-new scheme for executing sound warning by the electric automobile is provided, and motor sound is accurately compensated in real time according to vehicle working parameters of the electric automobile collected in real time so as to output target warning sound with sound quality which is easier to accept by pedestrians.
Description
Technical Field
The invention relates to the technical field of electric automobile warning, in particular to an electric automobile sound warning device and method.
Background
With the strong support of the state on new energy technology, new energy automobiles are greatly popularized. The pure electric vehicle is driven by the motor and is not provided with the engine, so that the pure electric vehicle has small sound in the running process, particularly in the low-speed running process, and even cannot be perceived by pedestrians on the roadside, and therefore, a new energy vehicle is necessary to a warning effect mode of the pedestrians.
The sound warning mode to new energy automobile among the prior art mainly has two kinds: the first mode is that high-frequency narrow-band sounds similar to a buzzer and a loudspeaker are added outside the automobile in a more traditional mode; the second way is to record the engine sound and trigger the playback of the recorded engine sound through an algorithm and a single variable of the rotating speed.
The inventor of the present application finds that the above solution of the prior art has at least the following disadvantages in the process of implementing the present invention:
in the first mode, a buzzer or the like is added outside the vehicle, although the implementation is relatively easy and the cost is low. However, most of the buzzers emit narrow-band signals mainly at medium and high frequencies. On one hand, the medium-high frequency noise signal is relatively sharp, and is easy to cause the dysphoria of pedestrians; on the other hand, the sound quality has no feeling of booming and sinking, the sound is greatly different from that of the traditional fuel vehicle, and the sound is not easy to accept by pedestrians.
In the second approach, recording the conventional engine sounds is also relatively easy to implement, is not cost-effective, and the sounds played back are relatively authentic. However, no matter what kind of working environment the electric vehicle is in, it will only emit the same playback sound, resulting in a poor recognition of the played back engine sound.
Disclosure of Invention
The embodiment of the invention aims to provide a sound warning device and a sound warning method for an electric vehicle, and provides a brand-new sound warning scheme for the electric vehicle, which is used for at least solving the problem that the warning sound of the electric vehicle in the prior art is harsh or the recognition sense is not strong and cannot be accepted by pedestrians.
In order to achieve the above object, an aspect of the present invention provides an electric vehicle sound warning device, where the electric vehicle is provided with a motor capable of generating a first motor sound when the electric vehicle is in operation, and the electric vehicle sound warning device includes: the working parameter acquisition unit is used for acquiring a first vehicle working parameter related to the electric vehicle; a supplementary sound determination unit for determining a first supplementary sound component based on the first vehicle operating parameter in combination with a supplementary sound database in which supplementary sound mapping relationships between a plurality of vehicle operating parameters and a plurality of supplementary sound components are stored; and the warning sound output unit is used for compensating the first motor sound by using the first supplementary sound component to generate a target warning sound and outputting the target warning sound to the outside of the electric automobile.
Optionally, the electric vehicle sound warning device further includes an accent database creating unit, where the accent database creating unit includes: the sound supplementing mapping relation determining submodule is used for acquiring a second motor sound related to the electric automobile when the electric automobile works under the preselected second vehicle working parameter, determining a sound component of the second motor sound which is lacked relative to the target warning sound as a second supplementary sound component, and determining the corresponding relation between the second supplementary sound component and the second vehicle working parameter as a second supplementary sound mapping relation; the repeated calling module is used for changing the second vehicle working parameters for multiple times and calling the sound supplementing mapping relation determining sub-module for multiple times respectively to determine a plurality of corresponding sound supplementing mapping relations; a database building module for combining the determined plurality of tonic mapping relationships to build the tonic database.
Optionally, this electric automobile sound warning device still includes: the state parameter acquisition unit is used for acquiring driving state parameters of the electric automobile; and the voice warning triggering unit is used for judging whether to trigger the supplementary voice determining unit to execute the operation according to the driving state parameter.
Optionally, the first vehicle operating parameter and/or the second vehicle operating parameter includes one or more selected from: the running speed of the vehicle, the rotating speed of the motor and the opening degree of the throttle valve.
Optionally, the driving state parameter includes a vehicle driving speed and/or an individual distance near the automobile.
Optionally, the sound alarm triggering unit includes: the judging module is used for judging whether the acquired vehicle running speed is smaller than a preset running speed threshold value and/or judging whether the distance between individuals near the automobile is smaller than a preset distance threshold value; and the triggering module is used for triggering and executing sound warning operation when the collected vehicle running speed is smaller than the running speed threshold value and/or when the collected individual distance near the automobile is smaller than the distance threshold value.
Optionally, the warning sound output unit includes: and a sound compensation module. For compensating the first motor sound with the first supplemental sound component; the power amplifier is used for amplifying the compensated first motor sound according to the distance between individuals near the automobile to generate the target warning sound; and the warning sound output module is used for outputting the target warning sound to the outside of the electric automobile.
Optionally, the sound compensation module is configured to supplement the first motor sound with a first supplementary sound component, wherein the first supplementary sound component and/or the first motor sound are amplified by the power amplifier before the first supplementary sound component and/or the first motor sound.
In another aspect, an embodiment of the present invention further provides a sound warning method for an electric vehicle, where the electric vehicle is provided with a motor capable of generating a first motor sound when the electric vehicle is in operation, and the method includes: collecting a first vehicle operating parameter relating to the electric vehicle; determining a first supplemental sound component based on the first vehicle operating parameter in conjunction with an inflections database, wherein the inflections database has stored therein an inflections mapping between a plurality of vehicle operating parameters and a plurality of supplemental sound components; and compensating the first motor sound by using the first supplementary sound component to generate a target warning sound, and outputting the target warning sound to the outside of the electric automobile.
Optionally, the method further includes a step of establishing the supplementary sound database, which specifically includes: when the electric vehicle works under the second preselected vehicle working parameter, executing a following supplementary sound mapping relation determining substep, collecting a second motor sound related to the electric vehicle, determining a sound component of the second motor sound which is missing relative to the target warning sound to be a second supplementary sound component, and determining a corresponding relation between the second supplementary sound component and the second vehicle working parameter to be a second supplementary sound mapping relation; changing the second vehicle operating parameter a plurality of times and executing the complementary sound mapping relation determining substeps a plurality of times to determine a corresponding plurality of complementary sound mapping relations, respectively; combining the determined plurality of tonic mapping relationships to build the tonic database.
Optionally, the method further includes: collecting driving state parameters related to the electric automobile; determining whether to trigger execution of this step in dependence on the driving state parameter determines a first supplementary sound component based on the first vehicle operating parameter in combination with a database of supplementary sounds.
Optionally, the first vehicle operating parameter and/or the second vehicle operating parameter includes one or more selected from: the running speed of the vehicle, the rotating speed of the motor and the opening degree of the throttle valve.
Optionally, the driving state parameter includes a vehicle driving speed and/or an individual distance near the automobile.
Optionally, the determining whether to trigger execution of the sound warning operation based on the driving state parameter includes: judging whether the acquired vehicle running speed is less than a preset running speed threshold value and/or judging whether the individual distance near the automobile is less than a preset distance threshold value; and when the collected vehicle running speed is smaller than the running speed threshold value and/or when the collected distance between individuals near the automobile is smaller than the distance threshold value, triggering to execute sound warning operation.
Optionally, the compensating the first motor sound generated by the motor operation using the first supplementary sound component to generate the target warning sound includes: compensating the first motor sound with the first supplemental sound component; amplifying the compensated first motor sound according to the distance between individuals near the automobile to generate the target warning sound; and outputting the target warning sound to the outside of the electric automobile.
Optionally, before compensating the first motor sound by the first supplementary sound component, the first supplementary sound component and/or the first motor sound is amplified.
According to the technical scheme, the collected vehicle working parameters are combined with the supplementary sound database which stores supplementary sound mapping relations between the plurality of vehicle working parameters and the plurality of supplementary sound components in advance to determine the first supplementary sound component, so that the accuracy of the determined supplementary sound component is guaranteed; the motor sound is then compensated using the determined complementary sound component having the desired compensation effect, so that the vehicle emits a target warning sound that meets the desired requirements. Therefore, a brand-new electric automobile sound warning execution scheme is provided, motor sound can be accurately compensated in real time according to vehicle working parameters of the electric automobile collected in real time, and target warning sound which is easier to accept by pedestrians is output.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a schematic structural diagram of an electric vehicle sound warning device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electric vehicle audio warning device according to another embodiment of the present invention;
FIG. 3 is a diagram of the creation of an articulation database according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an electric vehicle audio warning device according to another embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an alarm sound output unit according to an embodiment of the present invention;
FIG. 6 is a schematic view of an electric vehicle sound warning device according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating an electric vehicle sound warning method according to an embodiment of the invention.
Description of the reference numerals
10. 101 working parameter acquisition unit of 20, 30 electric automobile sound warning device
102 supplementary sound determining unit 103 alarm sound output unit
104 buzz database building unit 1042 recalls the module
1041 phonetic complement mapping relation determination submodule 1043 database building module
105 state parameter acquisition unit 106 sound warning trigger unit
1031 sound compensation module 1032 power amplifier
1033 warning sound output module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
One skilled in the art will recognize that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
Referring to fig. 1, which is a schematic structural diagram of an electric vehicle sound warning device according to an embodiment of the present invention, the electric vehicle sound warning device 10 includes an operating parameter collecting unit 101, a complementary sound determining unit 102, and a warning sound outputting unit 103; the working parameter acquisition unit 101 is connected with the supplementary sound determination unit 102, and the supplementary sound determination unit 102 is connected with the warning sound output unit 103. It is understood that the electric vehicle sound warning device 10 is disposed on an electric vehicle, and a motor capable of generating a first motor sound when the electric vehicle is in operation is disposed in the electric vehicle. The operating parameter collecting unit 101 may collect a first vehicle operating parameter regarding the electric vehicle; the supplementary sound determining unit 102 may determine the first supplementary sound component based on the first vehicle operating parameter in combination with a supplementary sound database in which supplementary sound mapping relationships between the plurality of vehicle operating parameters and the plurality of supplementary sound components are stored; the warning sound output unit 103 may compensate the first motor sound by using the first supplementary sound component to generate a target warning sound, and output the target warning sound to the outside of the electric vehicle. It is understood that the supplementary note database in this embodiment may be owned by the device itself, or may be provided by a third party, which is not limited in this embodiment, but the present application discloses a supplementary note database owned by the device itself in the following embodiments, and more specific details will be developed in the following other embodiments.
It should be understood that the pre-stored supplementary sound mapping relationship in the supplementary sound database may be determined to be feasible through a plurality of experiments, that is, the motor sound under the corresponding operating parameters collected in real time can be compensated to the target warning sound with the desired requirement by using the supplementary sound component under the supplementary sound mapping relationship. As a further disclosure and optimization, the vehicle operating parameter may be vehicle travel speed, motor speed, or throttle opening and closing; therefore, by means of the sound supplement database, the corresponding accurate sound supplement component can be determined according to the vehicle running speed, the motor rotating speed or the accelerator opening and closing degree which are easy to acquire in real time, so that the motor sound of the electric automobile is compensated to the target warning sound level in real time. The target warning sound may be, for example, a simulated engine sound, for example, an engine sound corresponding to the engine of a fuel-powered vehicle under the corresponding operating parameters, or may be another warning sound acceptable to pedestrians. With the improvement of the laws and regulations related to the running sound of the electric vehicle all over the world, China also puts forward the technical requirements on the low-speed running prompt tone of the electric vehicle, and the standard specifies the speed range, the sound level limit value and the frequency requirement of the low-speed running prompt tone of the electric vehicle.
Referring to fig. 2, a schematic structural diagram of an electric vehicle sound warning device according to another embodiment of the present invention is shown, and the electric vehicle sound warning device 20 shown in fig. 2 can be regarded as an optimized and complementary embodiment of the electric vehicle sound warning device 10 shown in fig. 1. Specifically, the sound warning device 20 is provided with an additional tonic database establishing unit 104 capable of establishing and updating an tonic database with respect to the sound warning device 10, and the tonic database establishing unit 104 is provided with a tonic mapping relationship determining sub-module 1041, a repeat calling module 1042 and a database establishing module 1043; the sound supplement mapping relationship determining submodule 1041 may collect a second motor sound related to the electric vehicle when the electric vehicle operates under the preselected second vehicle operating parameter, determine that a sound component of the second motor sound missing with respect to the target warning sound is a second supplementary sound component, and determine a corresponding relationship between the second supplementary sound component and the second vehicle operating parameter as a second supplementary sound mapping relationship; the repeated calling module 1042 may be configured to change the second vehicle operating parameter for multiple times, and call the complementary sound mapping relationship determining sub-module for multiple times to determine a plurality of corresponding complementary sound mapping relationships, respectively; the database building module 1043 may combine the determined plurality of tonic mapping relations to build the tonic database. And recording a supplementary sound component which is missing relative to the target warning sound and corresponds to the motor sound corresponding to the preselected vehicle parameter, thereby establishing a supplementary sound database containing supplementary sound mapping relations between the supplementary sound component and the vehicle parameter. It should be noted that the mapping relationship described herein may refer to a one-to-one mapping relationship, a one-to-many mapping relationship, or a certain mathematical function association relationship, which is not limited herein and all of which belong to the scope of the present embodiment.
Referring to fig. 3, a schematic diagram of the creation of the consonant database according to an embodiment of the present invention is shown, in which an example is shown when the target warning sound is a simulated engine sound. It will be appreciated that, for a moving vehicle, after a certain speed, the engine or the motor will emit a characteristic sound signal, and the characteristic of this sound signal is generally constant (unless an engine/motor failure occurs) under certain vehicle operating parameters (such as a certain speed, which will be described below for convenience only by way of example); the sound signal characteristics may be varied with speed so that a mapping between speed and sound is established. It can also be said that each speed of the vehicle will correspond to an engine sound and correspondingly a motor sound. When the vehicle speed is v, the sound signal of the engine is 1, the sound signal of the motor is a, the sound signals are different inevitably due to the difference of the structures, working principles and the like of the motor and the engine, the spectral characteristics, the order components and the like of the two sound signals of the motor sound of the electric vehicle and the engine sound of the fuel vehicle at the same speed can be analyzed through professional software processing, then, the fact that the motor sound lacks certain sound components compared with the engine sound can be determined, and further, the fact that the sound signal a is different from the sound signal 1 by the sound component A can be obtained through calculation. By analogy, it is possible to obtain that the engine sound signal (1, 2, 3 … …) always has a sound component (A, B, C … …) different from the sound component (a, b, c … …) in one-to-one correspondence. And correspondingly, since the sound component (A, B, C … …) is in one-to-one correspondence with the vehicle speed v, a functional relationship can be established between the vehicle speed and the sound component (A, B, C … …) of the phase difference. It is understood that the sound complement database may also store sound complement mapping relations between the phase difference sound component (A, B, C … …) and other vehicle operating parameters such as motor speed and accelerator opening and closing degree, and the vehicle operating parameters CAN be obtained by reading CAN data through a vehicle CAN bus.
Referring to fig. 4, a schematic structural diagram of an electric vehicle sound warning device according to another embodiment of the present invention is shown, and the electric vehicle sound warning device 30 shown in fig. 4 can be regarded as an optimized and complementary embodiment of the electric vehicle sound warning device 10 shown in fig. 1. As shown in fig. 4, the specific difference is that the audio warning device 30 has a status parameter collecting unit 105 and an audio warning triggering unit 106 connected to the status parameter collecting unit 105, compared to the audio warning device 10, and the audio warning triggering unit 106 is further connected to the supplementary sound determining unit 102. More specifically, the state parameter collecting unit 105 may collect a driving state parameter regarding the electric vehicle and transmit the driving state parameter to the sound alert triggering unit 106; the sound alarm triggering unit 106 may determine whether to trigger the complementary sound determination unit 102 to perform an operation according to the driving state parameter. Therefore, when the running state of the vehicle meets the preset condition, the sound warning device can be automatically triggered to execute the sound warning operation. As a further disclosure and optimization, the driving state parameters may include vehicle driving speed and/or individual distance in the vicinity of the vehicle; accordingly, the audible alarm trigger unit 106 may include a judgment module (not shown) and a trigger module (not shown), wherein the judging module can judge whether the collected vehicle running speed is less than a preset running speed threshold value and/or judge whether the distance between individuals near the automobile is less than a preset distance threshold value, and the triggering module can be used for judging whether the acquired running speed of the vehicle is less than a running speed threshold value, and/or when the acquired distance between individuals nearby the automobile is less than a distance threshold value, then triggering and executing the sound warning operation, and accordingly the state parameter collecting unit 105 may include a sound wave detecting module and/or a camera, therefore, the detection of the distance between individuals near the automobile is realized, and it should be noted that, when the detection module (for example, the sound wave detection module) is used in combination with the camera, the distance between individuals near the automobile and whether the individual pedestrians appear in a certain range can be measured more accurately. For example, the sound warning device may be automatically triggered to perform sound warning when the vehicle speed is lower than a certain driving speed (e.g. 40km/h), or may be automatically triggered to perform sound warning when an individual appears within a certain range of the vehicle.
Because the distance between the vehicle and an individual such as a pedestrian is not considered when the vehicle carries out voice warning at present, the sound pressure level of the voice warning is single, and when the vehicle is close to the pedestrian, the sound output by the vehicle is harsh, and the unpleasant feeling of the pedestrian can be caused. In view of this, as a further disclosure and optimization of the embodiment of the present invention, referring to fig. 5, a schematic structural diagram of a warning sound output unit according to an embodiment of the present invention is shown, and the warning sound output unit 103 includes a sound compensation module 1031, a power amplifier 1032 connected to the sound compensation module 1031, and a warning sound output module 1033 connected to the power amplifier 1032. More specifically, the sound compensation module 1031 may compensate the motor sound using the complementary sound component, the power amplifier 1032 may amplify the compensated motor sound according to the distance between individuals in the vicinity of the vehicle to generate a target warning sound, and the warning sound output module 1033 may output the target warning sound to the outside of the electric vehicle, and the warning sound output module 1033 may be, for example, a car audio, so that the occupancy of the space in the vehicle by the present apparatus may be saved. Therefore, the power amplifier 1032 can actively reduce the amplification factor of the sound pressure level when the automobile is detected to be close to the pedestrian, and because the embodiment of the invention has described that the supplementary sound component is actively superimposed on the motor sound, the annoyance of the warned pedestrian is more easily caused, so that the annoyance can be greatly reduced by making the sound pressure level smaller as the distance between the pedestrians becomes smaller. Further optimization and disclosure regarding the application of power amplifier 1032 primarily aims to achieve amplification and correction in the sound level when the electric vehicle sound alert device 10 is in operation when the sound pressure level is not considered at the time of creation of the database of consonants, while utilizing power amplifier 1032. For example, in one case, if the sound level of the supplementary sound component is consistent with the sound pressure level of the motor sound corresponding to the motor rotation speed when the supplementary sound database is established, the compensation process and the amplification process of the electric vehicle sound warning device 10 are not sequential when the electric vehicle sound warning device actually works; in other words, the motor sound and the supplementary sound component may be amplified according to the distance between the vehicle and the pedestrian, and then the amplified supplementary sound component and the motor sound may be synthesized, or the motor sound and the supplementary sound component may be synthesized first, and then the synthesized sound may be amplified, in which case, the amplification factors of the motor sound and the supplementary sound component may be the same. In another case, when the sound-compensating database is established, if the sound pressure level of the supplementary sound component is not consistent with the sound pressure level of the motor sound at the corresponding motor rotation speed, then when the electric vehicle sound warning device actually works, the motor sound and the supplementary sound component are amplified to the same sound pressure level independently, then the motor sound and the supplementary sound component are synthesized, finally, the corresponding amplification factor is determined according to the relation between the synthesized sound pressure level and the required sound pressure level, the amplification factor can be determined by the distance, and in this case, the target sound is generated by amplifying first and then synthesizing and then amplifying. In another case, if the sound level of the supplementary sound component reaches the required sound pressure level when the supplementary sound database is established, the supplementary sound component can be directly called without amplifying the supplementary sound component when the electric vehicle sound warning device actually works, and only the sound pressure level of the motor sound needs to be amplified, and at this time, the compensation process should be performed after the sound level amplification is performed.
Referring to fig. 6, which is a schematic diagram illustrating an operation principle of an electric vehicle sound warning device according to an embodiment of the present invention, as shown in fig. 6, there may be two paths for triggering a warning device switch 202 of the sound warning device, where the first path is automatically triggered when an acoustic wave detection device detects that an individual is present in a certain range around the vehicle; the second path is also automatically triggered when the vehicle speed is below 40 Km/h. When the warning device is triggered and started, firstly, relevant information such as vehicle speed, motor rotating speed and the like is read, the vehicle speed-sound function library is inquired by utilizing the relevant information so as to extract relevant sound from the vehicle speed-sound function library, then, the extracted relevant sound (corresponding to the sound complementing component in the embodiment) is synthesized with motor noise, and the synthesized relevant sound is amplified by a power amplifier so as to form final target engine sound and is played by a loudspeaker; and, in the process of power amplification, the participation of the sound wave detection device can be used, namely, the power amplifier determines the sound pressure level according to the distance between the automobile and the individual pedestrian measured by the sound wave detection device and guides the amplification factor of the power amplifier. Preferably, the influence of the relevant sound extracted when the vehicle speed-sound function library is established and the motor sound corresponding to the corresponding vehicle operating parameter on the sound pressure level may be considered in the synthesis process of the primary target engine sound, for example, the sound pressure level of one or both of the extracted relevant sound and the extracted motor noise may be amplified by a power amplifier at the above stage of synthesizing the extracted relevant sound and the extracted motor noise in sound to perform correction (not shown), and more specific details about the sound pressure level amplification may refer to the description of the above embodiment, and therefore will not be described herein again.
Referring to fig. 7, a flow chart of a sound warning method for an electric vehicle according to an embodiment of the present invention is shown, the electric vehicle is provided with a motor capable of emitting a first motor sound when in operation, and the method includes:
step 301: collecting a first vehicle operating parameter relating to the electric vehicle;
step 302: determining a first supplementary sound component based on the first vehicle operating parameter in combination with a supplementary sound database, wherein the supplementary sound database stores supplementary sound mapping relations between the plurality of vehicle operating parameters and the plurality of supplementary sound components;
step 303: and compensating the first motor sound by using the first supplementary sound component to generate a target warning sound, and outputting the target warning sound to the outside of the electric automobile.
Some or all of the steps and functions of the method according to the embodiment of the present invention may be executed by software loaded on the electric vehicle terminal. For more details and effects of the embodiments of the present invention, reference may be made to the above description of the embodiments of the apparatus, which is not repeated herein.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a (may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (14)
1. The utility model provides an electric automobile sound warning device, this electric automobile is provided with the motor that can send first motor sound when work, a serial communication port, electric automobile sound warning device includes:
the working parameter acquisition unit is used for acquiring a first vehicle working parameter related to the electric vehicle;
a supplementary sound determination unit for determining a first supplementary sound component based on the first vehicle operating parameter in combination with a supplementary sound database in which supplementary sound mapping relationships between a plurality of vehicle operating parameters and a plurality of supplementary sound components are stored;
the warning sound output unit is used for compensating the first motor sound by using the first supplementary sound component to generate a target warning sound and outputting the target warning sound to the outside of the electric automobile;
an accent database creation unit, the accent database creation unit comprising:
a complementary sound mapping relation determining submodule for determining whether the electric vehicle is operated under the second preselected vehicle operation parameter,
-collecting a second motor sound in relation to the electric vehicle,
-determining a sound component of the second motor sound missing with respect to the target warning sound as a second supplementary sound component,
-determining a correspondence of the second complementary sound component and the second vehicle operating parameter as a second complementary sound mapping;
the repeated calling module is used for changing the second vehicle working parameters for multiple times and calling the sound supplementing mapping relation determining sub-module for multiple times respectively to determine a plurality of corresponding sound supplementing mapping relations;
a database building module for combining the determined plurality of tonic mapping relationships to build the tonic database.
2. The electric vehicle sound warning device according to claim 1, further comprising:
the state parameter acquisition unit is used for acquiring driving state parameters of the electric automobile;
and the voice warning triggering unit is used for judging whether to trigger the supplementary voice determining unit to execute the operation according to the driving state parameter.
3. The electric vehicle audible warning device of claim 1, wherein the first vehicle operating parameter and/or the second vehicle operating parameter includes one or more selected from the group consisting of: the running speed of the vehicle, the rotating speed of the motor and the opening degree of the throttle valve.
4. The audible warning device for electric vehicle as claimed in claim 2, wherein said driving condition parameters include vehicle driving speed and/or distance between individuals in the vicinity of the vehicle.
5. The electric vehicle sound warning device according to claim 4, wherein the sound warning triggering unit comprises:
the judging module is used for judging whether the acquired vehicle running speed is smaller than a preset running speed threshold value and/or judging whether the distance between individuals near the automobile is smaller than a preset distance threshold value; and
the triggering module is used for triggering and executing sound warning operation when the collected vehicle running speed is smaller than the running speed threshold value and/or when the collected individual distance near the automobile is smaller than the distance threshold value.
6. The electric vehicle audio warning device according to claim 4, wherein the warning sound output unit includes:
a sound compensation module to compensate the first motor sound using the first supplemental sound component;
the power amplifier is used for amplifying the compensated first motor sound according to the distance between individuals near the automobile to generate the target warning sound;
and the warning sound output module is used for outputting the target warning sound to the outside of the electric automobile.
7. The electric vehicle sound warning device according to claim 6, wherein:
the sound compensation module is configured to supplement the first motor sound with a first supplemental sound component, wherein the first supplemental sound component and/or the first motor sound is amplified by the power amplifier prior thereto.
8. An electric vehicle sound warning method, the electric vehicle is provided with a motor capable of emitting a first motor sound when working, and the method is characterized by comprising the following steps:
collecting a first vehicle operating parameter relating to the electric vehicle;
determining a first supplemental sound component based on the first vehicle operating parameter in conjunction with an inflections database, wherein the inflections database has stored therein an inflections mapping between a plurality of vehicle operating parameters and a plurality of supplemental sound components;
compensating the first motor sound by using the first supplementary sound component to generate a target warning sound, and outputting the target warning sound to the outside of the electric automobile; the method comprises the following steps of:
when the electric vehicle is operated under the second preselected vehicle operation parameter, executing the following supplementary tone mapping relation determining substep,
-collecting a second motor sound in relation to the electric vehicle,
-determining a sound component of the second motor sound missing with respect to the target warning sound as a second supplementary sound component,
-determining a correspondence of the second complementary sound component and the second vehicle operating parameter as a second complementary sound mapping;
changing the second vehicle operating parameter a plurality of times and executing the complementary sound mapping relation determining substeps a plurality of times to determine a corresponding plurality of complementary sound mapping relations, respectively;
combining the determined plurality of tonic mapping relationships to build the tonic database.
9. The method of claim 8, further comprising:
collecting driving state parameters related to the electric automobile;
determining whether to trigger execution of this step in dependence on the driving state parameter determines a first supplementary sound component based on the first vehicle operating parameter in combination with a database of supplementary sounds.
10. The method of claim 8, wherein the first vehicle operating parameter and/or the second vehicle operating parameter includes one or more selected from the group consisting of: the running speed of the vehicle, the rotating speed of the motor and the opening degree of the throttle valve.
11. The method according to claim 9, characterized in that the driving state parameters comprise vehicle driving speed and/or individual distance in the vicinity of the car.
12. The method of claim 11, wherein determining whether to trigger performance of an audible alert operation based on the driving state parameter comprises:
judging whether the acquired vehicle running speed is less than a preset running speed threshold value and/or judging whether the individual distance near the automobile is less than a preset distance threshold value; and
when the collected vehicle running speed is smaller than the running speed threshold value and/or when the collected distance between individuals near the automobile is smaller than the distance threshold value, triggering to execute sound warning operation.
13. The method of claim 11, wherein compensating a first motor sound emitted by operation of the motor with the first supplemental sound component to generate a target alert sound comprises:
compensating the first motor sound with the first supplemental sound component;
amplifying the compensated first motor sound according to the distance between individuals near the automobile to generate the target warning sound;
and outputting the target warning sound to the outside of the electric automobile.
14. The method of claim 13, wherein the first supplemental sound component and/or the first motor sound is amplified prior to compensating the first motor sound with the first supplemental sound component.
Priority Applications (2)
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| CN201710457500.1A CN109131063B (en) | 2017-06-16 | 2017-06-16 | Electric automobile sound warning device and method |
| PCT/CN2018/089327 WO2018228209A1 (en) | 2017-06-16 | 2018-05-31 | Sound warning apparatus and method for electric automobile |
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| CN201710457500.1A CN109131063B (en) | 2017-06-16 | 2017-06-16 | Electric automobile sound warning device and method |
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| WO2022061709A1 (en) * | 2020-09-25 | 2022-03-31 | 武汉路特斯汽车有限公司 | Electric vehicle sound effect simulation method, device, and system, and automobile |
| CN112835048B (en) * | 2021-01-04 | 2023-12-15 | 海门市帕源路桥建设有限公司 | Automatic positioning control method for construction space |
| CN113561891A (en) * | 2021-08-27 | 2021-10-29 | 一汽奔腾轿车有限公司 | Pedestrian alarm sounding control system and control method thereof |
| CN114312559B (en) * | 2021-12-28 | 2023-01-31 | 东风柳州汽车有限公司 | Vehicle driving reminding method, device, equipment and storage medium |
| CN114506268B (en) * | 2022-02-09 | 2023-10-13 | 岚图汽车科技有限公司 | Control method and device for warning sound of electric vehicle and electric vehicle |
| CN114987331A (en) * | 2022-05-19 | 2022-09-02 | 中国第一汽车股份有限公司 | Engine sound compensation controller setting method and device, engine sound compensation method and device and automobile |
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| CN109131063A (en) | 2019-01-04 |
| WO2018228209A1 (en) | 2018-12-20 |
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