CN211959505U - In-vehicle communication system and vehicle - Google Patents

Abstract

The application provides communication system in car, communication system includes in the car: at least one pickup interface, draw the module, the distribution module, a plurality of audio mixing module, a plurality of speaker, the pickup interface is used for receiving the audio frequency signal, it is connected with at least one pickup interface electricity to draw the module, a speech signal for extracting personnel in the car in the audio frequency signal is in order to obtain the first signal of mixing sound of waiting, the distribution module is connected with the extraction module electricity, and the distribution module still is connected with a plurality of audio mixing module electricity, the distribution module is used for with the first signal of mixing sound of waiting to distribute to the audio mixing module that corresponds with the pickup interface, the audio mixing module still is used for receiving the second and waits to mix the audio mixing signal, and wait to mix the second and form mixed signal output to the speaker of being connected with the audio mixing module. The in-vehicle communication system is applied to the vehicle, so that the beneficial effects of saving real-time computing resources and reducing the requirements on the system and the processor of the vehicle are achieved. The present application further provides a vehicle.

Description

In-vehicle communication system and vehicle

Technical Field

The application relates to the technical field of in-vehicle communication, in particular to an in-vehicle communication system and a vehicle

Background

Vehicles have been very popular as one of the important vehicles in human society. However, there is still a problem with the communication between the front and rear occupants due to the distribution of seats within the vehicle. The traditional solution is that the sound insulation and shockproof material is piled up to provide a relatively quiet environment in the vehicle, but the material cost is increased and the weight of the vehicle is heavy. Still another solution is to adopt technologies such as in-vehicle echo cancellation, delay control, etc., but the existing in-vehicle communication system needs to be played in combination with other audio modules of the vehicle, relies on more real-time computing resources, and has higher requirements on systems and processors of the vehicle.

SUMMERY OF THE UTILITY MODEL

The application discloses in-vehicle communication system can reduce the material cost of vehicle to practice thrift real-time calculation resource, reduce the requirement to vehicle system, treater.

In a first aspect, the present application provides an in-vehicle communication system, comprising: at least one pickup interface, draw the module, distribute the module, a plurality of audio mixing module, a plurality of speaker, the pickup interface is used for receiving the audio frequency signal, draw the module with at least one pickup interface electricity is connected, is used for drawing personnel's in the car among the audio frequency signal speech signal is in order to obtain the first signal of mixing sound, distribute the module with draw the module electricity and connect, just distribute the module still with a plurality of audio mixing module electricity are connected, distribute the module be used for with the first signal of mixing sound distribute to with the pickup interface corresponds the audio mixing module, the audio mixing module still is used for receiving the second and treats the audio mixing signal, and will the second treat the audio mixing signal with the first signal of mixing sound after mixing form mixed signal output to with the audio mixing module electricity is connected the speaker.

The whole framework of the in-vehicle communication system is simple, the sound mixing module can be used for mixing the second to-be-mixed signal with the first to-be-mixed signal, namely, the in-vehicle communication system can integrate other audio signals in a vehicle to output together, so that the beneficial effects of saving real-time computing resources and reducing the requirements on the system and the processor of the vehicle are achieved.

In a second aspect, the present application also provides a vehicle comprising an in-vehicle communication system as described in the first aspect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any inventive exercise.

Fig. 1 is a schematic diagram of an in-vehicle communication system framework provided in a first embodiment of the present application.

Fig. 2 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application.

Fig. 3 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application.

Fig. 4 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application.

Fig. 5 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application.

Fig. 6 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application.

Fig. 7 is a schematic top view of a vehicle according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1, fig. 1 is a schematic diagram of an in-vehicle communication system framework according to a first embodiment of the present application. The in-vehicle communication system 1 includes: the system comprises at least one sound pickup interface 10, an extraction module 11, an allocation module 12, a plurality of mixing modules 13 and a plurality of loudspeakers 14. The pickup interface 10 is used for receiving audio electrical signals. The extraction module 11 is electrically connected to the at least one pickup interface 10, and is configured to extract a voice signal of an in-vehicle person in the audio electrical signal to obtain a first signal to be mixed. Distribution module 12 with extract module 11 electricity and connect, just distribution module 12 still with a plurality of mixing modules 13 electricity are connected, distribution module 12 is used for with first signal distribution of waiting to mix extremely with pickup interface 10 corresponds mixing module 13. The mixing module 13 is further configured to receive a second signal to be mixed, and the second signal to be mixed and the first signal to be mixed are mixed to form a mixed signal, and the mixed signal is output to the speaker 14 electrically connected to the mixing module 13.

Usually, the pickup interface 10 is externally connected to a sound receiving device, such as a microphone, etc. The sound receiving device can convert the received sound signal into an audio electric signal and send the audio electric signal to the sound pickup interface 10. It can be understood that the sound signal received by the sound receiving device includes a noise signal, that is, the audio electrical signal received by the sound pickup interface 10 includes a noise electrical signal converted from the noise signal. The extraction module 11 can remove the impurity electric signals and extract the voice signals of the persons in the vehicle in the audio electric signals to obtain a first signal to be mixed.

Specifically, the extraction module 11 may remove the impurity electrical signal according to the parameter of the audio electrical signal. For example, the extraction module 11 may remove the impurity electrical signals according to the frequency of the audio electrical signals, where the sound frequency of a person is usually between 100Hz and 10kHz, that is, the extraction module 11 may remove signals out of the audio electrical signals from 100Hz to 10kHz to obtain the first to-be-mixed signal. For another example, the extraction module 11 may remove the foreign electrical signal according to the language feature in the audio electrical signal. The extraction module 11 compares the waveform in the audio electrical signal with a human language library stored in a cloud or a memory, and eliminates the electrical signal which is not correctly paired to obtain the first signal to be mixed. It can be understood that, as long as the extraction module 11 is not affected to extract the speech signal of the vehicle occupant in the audio electrical signal to obtain the first to-be-mixed signal, the application does not impose a limitation on the method for extracting the audio electrical signal by the extraction module 11.

Specifically, in this embodiment, each of the sound pickup interfaces 10 individually corresponds to one of the sound mixing module 13 and the speaker 14. The distribution module 12 distributes the first to-be-mixed signal to the mixing module 13 corresponding to the sound pickup interface 10, so that the speaker 14 outputs the corresponding audio electrical signal received by the sound pickup interface 10. It is understood that, when the in-vehicle communication system 1 is applied to a vehicle, in order to allow a front passenger to communicate with a rear passenger normally, the speaker 14 corresponding to the sound pickup interface 10 located in the front row should be located in the rear row, and the speaker 14 corresponding to the sound pickup interface 10 located in the rear row should be located in the front row.

Specifically, the second signal to be mixed received by the mixing module 13 may be an audio electrical signal output by another device on the vehicle, or an audio electrical signal output by another device outside the vehicle, such as a mobile phone of a passenger. The mixing module 13 mixes the second signal to be mixed with the first signal to be mixed to form the mixed signal, so that a plurality of sound processing operation processes are integrated, and the system is simplified. The speaker 14 receives the mixed signal and converts the mixed signal into a sound signal to be output.

It can be understood that, in this embodiment, the overall framework of the in-vehicle communication system 1 is simple, and the audio mixing module 13 may be configured to mix the second signal to be mixed with the first signal to be mixed, that is, the in-vehicle communication system 1 may integrate other audio signals in the vehicle to output together, thereby achieving the beneficial effects of saving real-time computing resources and reducing requirements on a system and a processor of the vehicle.

In a possible embodiment, please refer to fig. 2 together, and fig. 2 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application. The in-vehicle communication system provided by the present embodiment is basically the same as the in-vehicle communication system provided in fig. 1 and the related description thereof, except that, in the present embodiment, the in-vehicle communication system 1 further includes: the car machine module 15, the car machine module 15 is used for outputting the second signal to be mixed, the car machine module 15 includes at least one or more modules in bluetooth call module 151, entertainment media module 152, information service module 153.

Specifically, when the in-vehicle communication system 1 is applied to a vehicle, the in-vehicle unit module 15 is a module capable of communicating and sounding in the vehicle. For example, the bluetooth communication module 151 may enable an occupant in the vehicle to communicate with an occupant outside the vehicle, and a communication voice signal of the occupant outside the vehicle may be used as the second signal to be mixed. For another example, the audio signal in the video or audio played by the entertainment media module 152 can be the second signal to be mixed. For another example, the audio electrical signal in the weather, traffic, navigation, and other information broadcasted by the information service module 153 may be used as the second signal to be mixed.

It can be understood that the second signal to be mixed output by the in-vehicle module 15 may be mixed with the first signal to be mixed by the mixing module 13 to form a mixed signal, that is, the in-vehicle module 15 serves as a part of the in-vehicle communication system 1, and compared with an original mutually independent system, real-time computing resources of a vehicle are reduced.

In a possible embodiment, please refer to fig. 3 together, and fig. 3 is a schematic diagram of an in-vehicle communication system framework provided in an embodiment of the present application. The in-vehicle communication system provided by the present embodiment is substantially the same as the in-vehicle communication system provided in fig. 2 and the related description thereof, except that, in the present embodiment, when the in-vehicle unit module 15 includes a plurality of modules, the in-vehicle communication system 1 further includes: a management module 16. The management module 16 is electrically connected to the in-vehicle device module 15, and is configured to manage the plurality of audio signals output by the plurality of modules in the in-vehicle device module 15, and extract the specified audio signal as the second signal to be mixed.

Specifically, the management module 16 can control the number of the audio signals of the second to-be-mixed signal not more than 2 according to the number of the audio signals output by the in-vehicle module 15, so as to prevent the sound signals output by the speaker 14 from being too noisy. In another possible embodiment, the management module 16 may further extract the specified audio signal as the second signal to be mixed according to the bluetooth communication module 151. When the bluetooth communication module 151 is in operation, that is, when a passenger in the car communicates with a person outside the car, the management module 16 stops extracting the audio signals output by other modules in the car machine module 15 except the bluetooth communication module 151, so as to ensure the communication quality.

In a possible embodiment, please refer to fig. 4 together, and fig. 4 is a schematic diagram of an in-vehicle communication system framework provided in an embodiment of the present application. The in-vehicle communication system provided by the present embodiment is basically the same as the in-vehicle communication system provided in fig. 3 and the related description thereof, except that, in the present embodiment, the in-vehicle communication system 1 further includes: a first sound effect processing module 17. First sound effect processing module 17 with management module 16 electricity is connected for to the appointed audio signal's audio carries out enhancement processing, behind the enhancement processing audio signal does the second treats the mixing sound signal.

Specifically, carry out enhancement processing to the appointed audio signal's audio effect, not only include right audio signal's volume is handled, still include right audio signal's tone quality is handled. For example, the audio signal lower than the preset decibel volume is expanded to the preset decibel volume, and the audio signal higher than the preset decibel volume is reduced to the preset decibel volume. For another example, fourier transform or the like may be applied to the waveform of the audio signal so that the output audio signal is fidelity.

In a possible embodiment, please refer to fig. 5, and fig. 5 is a schematic diagram of an in-vehicle communication system framework according to an embodiment of the present application. The in-vehicle communication system provided by the present embodiment is basically the same as the in-vehicle communication system provided in fig. 4 and the related description thereof, except that, in the present embodiment, the in-vehicle communication system 1 further includes: a processor 18. The processor 18 is configured to obtain a state of a vehicle to which the in-vehicle communication system 1 is applied, and the processor 18 is electrically connected to the extraction module 11 and configured to control the extraction module 11 to extract a voice signal of an in-vehicle person in the audio electrical signal according to the state of the vehicle to obtain the first to-be-mixed signal.

For example, the processor 18 may control the extracting module 11 to extract the voice signal of the vehicle occupant in the audio electrical signal according to whether the bluetooth communication module 151 in the vehicle-mounted device module 15 is in the working state. When the bluetooth communication module 151 is in an operating state, in order to better achieve the purpose of communicating between a person inside the vehicle and a person outside the vehicle, the processor 18 controls the extraction module 11 to stop extracting the voice signal of the person inside the vehicle from the audio electrical signal. In another possible embodiment, the processor 18 may further control the extracting module 11 to extract a voice signal of a person in the vehicle in the audio electrical signal according to whether the information service module 153 in the vehicle-mounted device module 15 is in a working state. When the information service module 153 is in an operating state, for example, the information service module 153 broadcasts information of traffic conditions, navigation, and the like for a vehicle driver, and in order to enable the vehicle driver to better acquire the information of traffic conditions, navigation, and the like, the processor 18 controls the extraction module 11 to stop extracting the voice signal of the person in the vehicle from the audio electrical signal.

As can be understood, the processor 18 controls the extraction module 11 to extract the voice signal of the in-vehicle person in the audio electrical signal according to the vehicle state, so that the management of the voice signal of the in-vehicle communication system 1 is more orderly, and the efficiency that the in-vehicle person can obtain information from the speaker 14 is higher, and the communication is more convenient.

In a possible embodiment, please refer to fig. 6 together, and fig. 6 is a schematic diagram of an in-vehicle communication system framework provided in an embodiment of the present application. The in-vehicle communication system provided by the present embodiment is basically the same as the in-vehicle communication system provided in fig. 5 and the related description thereof, except that, in the present embodiment, the in-vehicle communication system 1 further includes: a second sound effect processing module 19, wherein the second sound effect processing module 19 comprises: a gain controller 191, where the gain controller 191 is electrically connected to the distribution module 12, and is configured to amplify or reduce the first to-be-mixed signal.

Specifically, when the volume of the first signal to be mixed is smaller than a preset decibel volume, the gain controller 191 is configured to amplify the volume of the first signal to be mixed to the preset decibel volume. When the volume of the first signal to be mixed is greater than the preset decibel volume, the gain controller 191 is configured to reduce the volume of the first signal to be mixed to the preset decibel volume. It is understood that the gain controller 191 does not make the volume output by the speaker 14 too large or too small.

In a possible embodiment, referring again to fig. 6, the second sound effect processing module 19 further includes: an equalizer 192. The equalizer 192 is electrically connected to the gain controller 191, and is configured to adjust the first signal to be mixed according to a parameter of the first signal to be mixed.

Specifically, the equalizer 192 receives the first to-be-mixed signal whose volume is adjusted by the gain controller 191, and adjusts the electrical signals of three frequencies, namely, the high frequency, the intermediate frequency, and the low frequency, of the first to-be-mixed signal according to preset adjustable parameters, so as to improve the sound quality of the first to-be-mixed signal.

In a possible embodiment, referring again to fig. 6, the second sound effect processing module 19 further includes: and the delayer 193 is electrically connected with the equalizer 192, and when the pickup interface 10 is two or more, the delayer 193 is used for reducing the time difference of the voice signals transferred by the pickup interface 10.

It can be understood that, when the quantity of pickup interface 10 is 2 and above, it is a plurality of pickup interface 10 may receive the same audio signal, and as the same the first signal to be mixed is transmitted to different mixing module 13, and because the setting position of pickup interface 10 is different, the time that the first signal to be mixed is transmitted to different mixing module 13 may be different. The delayer 193 can enable the first signal to be mixed, which is the same but has different transmission time, to be transmitted to the mixing module 13 at the same time, so as to prevent the phenomenon of generating echo when the speaker 14 outputs a sound signal.

In a possible embodiment, the sampling rate of the extraction module 11 is 24kHz and the sampling rate of the management module 16 is 48 kHz.

Typically, the sampling rate of sound is 48kHz, the number of samples per second that are extracted from a continuous signal and made up into a discrete signal. In order to solve the technical problem of the real-time computing resource of the in-vehicle communication system 1, the sampling rate of the extraction module 11 is 24kHz, so that the real-time computing resource can be effectively saved under the condition of ensuring the tone quality of the first to-be-mixed signal, and meanwhile, the data buffering delay and the signal processing delay of the in-vehicle communication system 1 are reduced. In the present embodiment, the processing delay of the in-vehicle communication system 1 is less than 10 ms.

It should be noted that, each module and electronic device in the in-vehicle communication system 1 described in the present application all adopt the form of a hardware circuit or a chip, and are all physical devices, and the present application achieves the purpose of implementing the scheme of the present application by designing the electrical connection relationship between each module and electronic device. Functions of each module and electronic device in the in-vehicle communication system 1 described in the present application, each physical device itself can implement functions. The modules and electronic devices in the in-vehicle communication system 1 presented in the present application are not of a virtual architecture, and the modules and electronic devices in the in-vehicle communication system 1 presented in the present application should not be considered as objects protected by patent laws. For example, the processor 18 may be an onboard processing chip.

The present application further provides a vehicle 2, please refer to fig. 7, and fig. 7 is a schematic top view of the vehicle according to an embodiment of the present application. The vehicle 2 comprises an in-vehicle communication system 1 as described above. The in-vehicle communication system 1 please refer to the above description, which is not repeated herein. The in-vehicle communication system 1 ensures normal communication of personnel in the vehicle 2 and saves real-time computing resources of the vehicle 2.

The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. An in-vehicle communication system, characterized in that the in-vehicle communication system comprises: at least one pickup interface, draw the module, distribute the module, a plurality of audio mixing module, a plurality of speaker, the pickup interface is used for receiving the audio frequency signal, draw the module with at least one pickup interface electricity is connected, is used for drawing personnel's in the car among the audio frequency signal speech signal is in order to obtain the first signal of mixing sound, distribute the module with draw the module electricity and connect, just distribute the module still with a plurality of audio mixing module electricity are connected, distribute the module be used for with the first signal of mixing sound distribute to with the pickup interface corresponds the audio mixing module, the audio mixing module still is used for receiving the second and treats the audio mixing signal, and will the second treat the audio mixing signal with the first signal of mixing sound after mixing form mixed signal output to with the audio mixing module electricity is connected the speaker.

2. The in-vehicle communication system according to claim 1, further comprising: the car machine module, the car machine module is used for exporting the second is treated the audio mixing signal, the car machine module includes at least one or more modules in bluetooth conversation module, amusement media module, the information service module.

3. The in-vehicle communication system according to claim 2, wherein when the in-vehicle machine module includes a plurality of modules, the in-vehicle communication system further includes: and the management module is electrically connected with the vehicle machine module and used for managing a plurality of audio signals output by the modules in the vehicle machine module and extracting the appointed audio signals to serve as the second to-be-mixed signals.

4. The in-vehicle communication system according to claim 3, further comprising: first sound effect processing module, first sound effect processing module with the management module electricity is connected for to the appointed audio signal's audio carries out enhancement processing, behind the enhancement processing audio signal does the sound mixing signal is treated to the second.

5. The in-vehicle communication system according to claim 1, further comprising: the processor is used for acquiring the state of a vehicle applied by the in-vehicle communication system, electrically connected with the extraction module and used for controlling the extraction module to extract the voice signal of the in-vehicle person in the audio electric signal according to the state of the vehicle so as to obtain the first signal to be mixed.

6. The in-vehicle communication system according to claim 1, further comprising: a second sound effect processing module, the second sound effect processing module comprising: and the gain controller is electrically connected with the distribution module and is used for amplifying or reducing the first to-be-mixed signal.

7. The in-vehicle communication system according to claim 6, wherein the second sound effect processing module further comprises: and the equalizer is electrically connected with the gain controller and used for adjusting the first signal to be mixed according to the parameter of the first signal to be mixed.

8. The in-vehicle communication system according to claim 7, wherein the second sound effect processing module further comprises: the delayer, the delayer with the equalizer electricity is connected, works as when the pickup interface is two and above, the delayer is used for reducing the pickup interface transmission voice signal's time difference.

9. The in-vehicle communication system according to claim 3, wherein the sampling rate of the extraction module is 24kHz and the sampling rate of the management module is 48 kHz.

10. A vehicle characterized in that the vehicle comprises an in-vehicle communication system according to any one of claims 1 to 9.

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