Broadcasting method and broadcasting device for vehicle navigation, vehicle and program product

Abstract

The invention discloses a vehicle navigation broadcasting method, a vehicle navigation broadcasting device, a vehicle and a computer program product. According to the broadcasting method, the driving safety is guaranteed through multiple broadcasting strategies. Specifically, under the condition that a power amplifier breaks down, if a broadcasting demand exists in vehicle navigation, vehicle navigation broadcasting is carried out based on a target loudspeaker in wired connection with a multimedia host; the target loudspeakers comprise the basic loudspeaker and the customized loudspeaker, broadcasting is preferentially carried out through the basic loudspeaker, broadcasting is carried out through the customized loudspeaker under the condition that the basic loudspeaker breaks down, in other words, vehicle navigation broadcasting interruption is avoided as much as possible, and the driving safety is guaranteed. Under extreme conditions, if the two target loudspeakers fail, the vehicle navigation cannot be continuously broadcasted. At the moment, the multimedia host can be connected with the instrument, and the loudspeaker of the instrument is controlled to send out related prompt information through the prompt instruction, so that a driver is prevented from excessively depending on vehicle navigation broadcast, and the driving safety is further improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular, relates to a vehicle navigation broadcasting method, a vehicle navigation broadcasting device, a vehicle, and a computer program product. Background Art

[0002] The current vehicles are not only used as a means of transportation, but also regarded as the user's private space, providing users with a more intelligent experience. Under this trend, the development of in-car audio systems is becoming more and more high-end, striving to bring users a cinema-level audio-visual experience.

[0003] As audio systems are upgraded, they become more complex and more prone to malfunctions: in the event of an audio system failure, the sound will not be played normally, which may only reduce the user experience in general scenarios; but in the scenario of vehicle navigation driving, the interruption of the vehicle navigation broadcast may distract the driver and affect driving safety. Summary of the invention

[0004] The present application provides a vehicle navigation broadcasting method, a vehicle navigation broadcasting device, a vehicle and a computer program product, which can avoid interruption of vehicle navigation broadcasting and ensure driving safety.

[0005] In a first aspect, the present application provides a vehicle navigation broadcasting method, comprising:

[0006] After the multimedia host sends the audio data to the power amplifier, determining whether the power amplifier is faulty; the audio data at least includes navigation audio data of vehicle navigation;

[0007] In the event of a power amplifier failure, determine if the vehicle navigation is not muted;

[0008] When the vehicle navigation is not muted, the navigation audio data is broadcasted through the target speaker; the target speaker is connected to the multimedia host by wire.

[0009] In a second aspect, the present application provides a vehicle navigation broadcasting device, comprising:

[0010] A first determination module is used to determine whether the power amplifier is faulty after the multimedia host sends the audio data to the power amplifier; the audio data at least includes navigation audio data of vehicle navigation;

[0011] A second determination module is used to determine whether the vehicle navigation is not muted in the event of a power amplifier failure;

[0012] The broadcast module is used to broadcast the navigation audio data through the target speaker when the vehicle navigation is not muted; the target speaker is connected to the multimedia host by wire.

[0013] In a third aspect, the present application provides a vehicle comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method of the first aspect when executing the computer program.

[0014] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method of the first aspect are implemented.

[0015] In a fifth aspect, the present application provides a computer program product, which includes a computer program. When the computer program is executed by one or more processors, it implements the steps of the method of the first aspect.

[0016] Compared with the prior art, the present application has the following beneficial effects: if the power amplifier fails, the vehicle navigation cannot be broadcast through the original playback path, that is, the multimedia host-power amplifier-speaker playback path. In order to avoid the vehicle navigation being unable to be broadcast and affecting driving safety, after sending the audio data to the power amplifier, the multimedia host can determine whether the power amplifier is faulty; in the case of a power amplifier failure, it means that the broadcast cannot be made through the original playback path. Since the audio data at least includes navigation audio data, it means that the vehicle navigation has been activated; but the activation of the vehicle navigation does not mean that the user needs to broadcast the vehicle navigation. In order to accurately determine the broadcast demand, it can be determined whether the vehicle navigation is muted, and if the vehicle navigation is not muted, it is considered that there is a high possibility of a playback demand, then the multimedia host can find a new playback path to broadcast the vehicle navigation; specifically, on the basis of retaining the connection harness between the multimedia host and the target speaker, the multimedia host can continue to broadcast the navigation audio data through the multimedia host-target speaker playback path to avoid interruption of the vehicle navigation broadcast, thereby ensuring driving safety.

[0017] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1It is a flowchart of a vehicle navigation broadcasting method provided in an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of an audio playback path provided in an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of another audio playback path provided in an embodiment of the present application;

[0022] Figure 4 It is a structural schematic diagram of a vehicle navigation broadcasting device provided in an embodiment of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0025] In the related art, in the event of a sound system failure, the sound will not be played normally, which may only reduce the user experience in general scenarios; but in the scenario of vehicle navigation driving, the interruption of the vehicle navigation broadcast can easily distract the driver and affect driving safety.

[0026] The present application found that there are many situations where the vehicle navigation broadcast is interrupted, such as power amplifier failure or speaker failure. Given that there are multiple speakers, the failure of some speakers will at most reduce the user experience and will not affect the safety of driving; however, if the power amplifier fails, the broadcast path is disconnected and all audio will not be played, which is likely to affect the safety of driving.

[0027] In order to solve this problem, the present application proposes a vehicle navigation broadcasting method, which can continue the vehicle navigation broadcasting through a new audio playback path when the power amplifier fails, thereby ensuring driving safety. The control method proposed in the present application will be described below through specific embodiments.

[0028] The vehicle navigation broadcasting method provided in the embodiment of the present application can be applied to a multimedia host, which can be a vehicle system integrated in the vehicle, or other electronic devices, such as a mobile phone, a tablet computer, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), etc. that establish a communication connection with the vehicle. The embodiment of the present application does not impose any restrictions on the specific type of electronic device.

[0029] In order to illustrate the technical solution proposed in this application, various embodiments will be described below with a multimedia host as the execution subject.

[0030] Figure 1 A schematic flow chart of a vehicle navigation broadcasting method provided by the present application is shown, and the vehicle navigation broadcasting method includes:

[0031] Step 110: After sending the audio data to the power amplifier, the multimedia host determines whether the power amplifier is faulty.

[0032] Nowadays, vehicles are not only a means of transportation, but also regarded as the driver's private space, committed to providing intelligent and high-quality experience. In line with this trend, in-car audio systems are gradually developing towards high-end, striving to bring users audio-visual enjoyment comparable to that of a cinema. Based on this, vehicles are usually equipped with independent power amplifiers to drive speakers, thereby providing stronger and clearer sound performance.

[0033] like Figure 2 As shown, the audio playback path is generally: multimedia host → power amplifier → speaker, that is, the multimedia host first transmits the processed audio data to the power amplifier, and the power amplifier can output the corresponding sound signal to the speaker after performing gain adjustment, frequency band equalization, channel allocation and dynamic range control according to the volume setting and sound effect selection, so as to accurately drive the speaker to achieve richer and more three-dimensional audio playback.

[0034] During use, the sound system composed of the power amplifier and the speaker may malfunction. In particular, when the power amplifier fails, the above-mentioned playback path is disconnected, and the audio will not be able to be played through the system. If the playback content includes entertainment audio, the failure may only affect the user experience; however, if it includes vehicle navigation instructions, it may affect the safe driving of the vehicle.

[0035] Based on this, it is necessary to take corresponding solutions for audio data including at least navigation audio. Specifically, after the multimedia host sends the processed audio data to the power amplifier, it can determine whether the power amplifier fails, so as to broadcast the vehicle navigation through other audio playback paths after the power amplifier fails, avoiding distraction of the driver due to interruption of navigation broadcast, thereby ensuring driving safety.

[0036] There are many methods for determining the fault of a power amplifier.

[0037] For example, during the interaction between the multimedia host and the power amplifier, in order to ensure effective data transmission, the power amplifier can feed back successful reception information to the multimedia host after receiving the audio data. Based on this, the multimedia host can determine whether the power amplifier is faulty according to the feedback information of the power amplifier.

[0038] For example, some high-end multimedia hosts or power amplifiers have a self-diagnosis function, which can regularly check the internal circuit status, such as detecting changes in parameters such as current and voltage of the power amplifier to determine whether there is an abnormality. That is, the multimedia host can determine whether the power amplifier is faulty based on the detection information or self-diagnosis results.

[0039] For example, when the power amplifier fails, the audio played by the speaker may be obviously abnormal, with sudden silence, interruption, distortion, etc. Therefore, the multimedia host may be configured with a speaker signal detection module to determine whether the power amplifier fails by detecting the audio signal output by the speaker.

[0040] The specific power amplifier fault detection means can be selected according to the actual situation, and this embodiment does not limit this. The above detection means can also be used in combination to improve the accuracy of fault detection.

[0041] Step 120: In the event of a power amplifier failure, the multimedia host determines whether the vehicle navigation is not muted.

[0042] Different power amplifier fault determination methods correspond to different determination criteria.

[0043] For example, if it is determined whether the power amplifier fails based on the detection information or the self-diagnosis result, the multimedia host can determine that the power amplifier fails based on not receiving feedback information from the power amplifier within a preset time period or receiving feedback information indicating a failure to receive feedback.

[0044] For example, if it is determined whether the power amplifier fails based on the detection information or the self-diagnosis result, the multimedia host can determine that the power amplifier fails based on the excessively high or low current or voltage or the abnormal diagnosis result sent by the self-diagnosis module.

[0045] The power amplifier is faulty, indicating that the audio cannot be played through the normal path. The audio data already includes navigation audio data, indicating that the vehicle navigation has been activated, but the activation of the vehicle navigation does not mean that the user needs to broadcast the vehicle navigation. In order to accurately determine the broadcast requirement, it can be determined whether the vehicle navigation is muted, and if the vehicle navigation is not muted, it is considered that the vehicle navigation is not muted and is ready to provide the driver with real-time vehicle navigation instructions through the vehicle navigation broadcast to ensure the normal communication of the driving route and safety tips, that is, there is a real broadcast requirement. Therefore, the multimedia host can execute step 130 when it detects that the vehicle navigation is not muted.

[0046] Step 130: When the vehicle navigation is not muted, the multimedia host broadcasts the vehicle navigation through the target speaker.

[0047] When it is determined that there is a need to broadcast vehicle navigation, in order to avoid interruption of vehicle navigation broadcast due to power amplifier failure, the multimedia host can identify the speaker connected to the machine by wire as the target speaker, and broadcast the vehicle navigation through the target speaker, thereby ensuring that the vehicle navigation instructions can be conveyed in real time through voice, thereby improving driving safety.

[0048] In order to make the car audio more three-dimensional and powerful, and achieve the audio-visual enjoyment of the cinema level, the types and number of car speakers are increasing, and they are changed from being directly connected to the multimedia host to being connected to the multimedia host through a power amplifier. However, in order to ensure the normal operation of the vehicle navigation broadcast when the power amplifier fails, refer to Figure 3 , the wired connection between the multimedia host and some speakers can be retained in the car. This can be considered as a hardware requirement for implementing the broadcasting method. In this way, even if the power amplifier fails, the navigation audio data can still be played through the hard-wired target speakers to avoid interruption of vehicle navigation broadcasting.

[0049] In this embodiment, if the power amplifier fails, the vehicle navigation cannot be broadcast through the original playback path, that is, the multimedia host-power amplifier-speaker playback path. In order to avoid the vehicle navigation being unable to be broadcast and affecting driving safety, after sending the audio data to the power amplifier, the multimedia host can determine whether the power amplifier is faulty, and the audio data at least includes navigation audio data, indicating that the vehicle navigation has been activated; but the activation of the vehicle navigation does not mean that the user needs to broadcast the vehicle navigation. In order to accurately determine the broadcast requirement, it can be determined whether the vehicle navigation is muted, and if the vehicle navigation is not muted, it is considered that there is a playback requirement, then the multimedia host can find a new playback path to broadcast the vehicle navigation. Specifically, on the basis of retaining the connection harness between the multimedia host and the target speaker, the multimedia host can continue to broadcast the navigation audio data through the multimedia host-target speaker playback path to avoid interruption of the vehicle navigation broadcast, thereby ensuring driving safety.

[0050] In some embodiments, although the target speaker and the multimedia host are relatively reliable through the wired connection, failures may still occur. Based on this, in order to ensure the reliability of the vehicle navigation broadcast, the aforementioned step 130 specifically includes:

[0051] Step A1: When it is determined that the target speaker is faulty based on the received pulse width modulation signal, the multimedia host establishes a communication channel with the instrument of the vehicle.

[0052] The target speaker and the multimedia host connected by hard wire communicate based on pulse width modulation signals. To broadcast vehicle navigation through the target speaker, the multimedia host can first determine whether the target speaker is faulty based on the received pulse width modulation signal, so as to adopt different strategies according to the determination result.

[0053] For example, after a speaker fails, an invalid signal can be sent to the multimedia host through a hard line via a pulse width modulation signal. As a result, the multimedia host can compare the pulse width modulation signal with the normal signal to determine whether the speaker fails. For example, the signal frequency of the normal signal is 60Hz, and the duty cycle is 50%+redundancy value. When the signal frequency and duty cycle of the pulse width modulation signal are inconsistent with the signal frequency and duty cycle of the normal signal, it can be determined that the pulse width modulation signal is an invalid signal, that is, the target speaker fails.

[0054] Of course, in addition to determining based on the pulse width modulation signal, other means may also be used to determine whether the target speaker is faulty.

[0055] For example, if the speaker fails, even if the navigation audio data is sent to the speaker, the audio played by the speaker may be obviously abnormal, such as sudden silence, disconnection or distortion. Therefore, the multimedia host can be equipped with a speaker signal detection module, and when the target speaker is detected to play abnormal audio, it can be determined that the target speaker is faulty.

[0056] Similar to the determination of power amplifier failure, there are many ways to determine whether the target speaker is faulty. The specific means of detecting the target speaker failure can be selected according to the actual situation, and this embodiment does not limit this. The above detection means can also be used in combination to improve the accuracy of fault detection.

[0057] If the target speaker also fails, it means that the vehicle navigation broadcast cannot be performed based on the existing broadcast path. In order to prevent the driver from over-relying on the vehicle navigation voice, the multimedia host can remind the driver to pay attention to the vehicle navigation interface through other means. Since the vehicle's instrument has a dedicated speaker, the multimedia host can connect to the instrument to establish a communication channel.

[0058] Specifically, see Figure 3 , the multimedia host can perform a handshake with the instrument through the CAN bus, thereby establishing a communication channel for both parties to facilitate communication. After a successful handshake, the multimedia host can interact with the instrument through the CAN signal to play prompt information based on the speaker of the instrument. In this way, even if the speaker fails, it can improve driving safety by prompting the driver to pay attention to the vehicle navigation interface.

[0059] Step A2: the multimedia host sends a first prompt instruction to the instrument through the communication channel, so that the instrument prompts the vehicle navigation broadcast fault in a preset prompting manner.

[0060] The multimedia host can send a first prompt instruction to the instrument through the constructed communication channel. The first prompt instruction is used to instruct the instrument to prompt the driver of the interruption of the vehicle navigation broadcast through a preset prompt method, so that the driver can obtain relevant vehicle navigation information through the navigation interface to assist driving.

[0061] The prompting method includes an alarm sound and / or a pop-up window, etc. For example, the pop-up window may display words such as "speaker failure, unable to broadcast vehicle navigation", thereby promptly informing the driver of the interruption of the vehicle navigation broadcast, so that the driver can take necessary measures.

[0062] In this embodiment, when the multimedia host is unable to continue the vehicle navigation broadcast through the target speaker, it can establish a connection with the instrument and send a first prompt instruction to the instrument to control the instrument to promptly inform the driver of the interruption status of the vehicle navigation broadcast through a preset prompt method, so that the driver can take necessary measures to ensure driving safety.

[0063] In some embodiments, although the multimedia host prompts the user to pay attention to the vehicle navigation interface through the first prompt instruction, which can ensure driving safety, the driver may still miss important vehicle navigation information. To deal with this situation, the multimedia host can also perform the following steps:

[0064] Step B1: When the distance between the vehicle and the nearest intersection in the driving direction is less than a preset distance threshold, the multimedia host sends a second prompt instruction to the instrument to make the instrument emit a target prompt audio.

[0065] At an intersection, a vehicle may choose to go straight, turn around, turn, or change lanes before turning, that is, there are multiple driving options. If the driver misses important vehicle navigation instructions, such as going straight when he needs to turn left, it will cause unnecessary trouble.

[0066] To better assist the driver, when the distance between the vehicle and the nearest intersection in the driving direction is less than the set distance threshold, the multimedia host can send a second prompt command to the instrument, triggering the instrument to emit a target prompt audio that matches the vehicle navigation prompt at the intersection. This can provide the driver with enough time to react before reminding him / her that he / she is approaching the intersection, ensuring safe and accurate driving. Especially in complex road conditions or low visibility, the audio prompt of this strategy can effectively improve the driver's alertness, reduce emergencies, prevent the driver from taking the wrong road due to slow reaction, or even threaten the safety of driving, and ensure the timeliness and accuracy of driving decisions.

[0067] The distance threshold may be set between 200 and 100 meters. For example, it may be a universal fixed value, or it may be dynamically adjusted according to real-time road conditions and driving speed to ensure that the driver can receive the vehicle navigation prompt in sufficient time to make an appropriate response and avoid driving safety affected by prompts that are too early or too late.

[0068] In some embodiments, in order to ensure the audio playing effect as much as possible, after the vehicle navigation is broadcasted through the target speaker connected to the multimedia host by wire, the following is further included:

[0069] Step C1: When it is determined that the power amplifier has been repaired, the multimedia host broadcasts the vehicle navigation through the power amplifier.

[0070] For repairable faults, such as communication faults, they may be repaired over time. Therefore, in order to ensure the audio playback effect, the multimedia host can continuously send audio data to the power amplifier to confirm in real time whether the power amplifier has been repaired. After it is repaired, the multimedia host can broadcast the vehicle navigation information through the power amplifier, that is, the audio is broadcast through the regular path. At this time, the power amplifier works normally and can process the audio data and accurately control the speaker to play the audio, bringing users a good listening experience.

[0071] In some embodiments, in order to make the in-car audio more three-dimensional and shocking, and achieve cinema-level audio-visual enjoyment, the types and number of in-car speakers are constantly increasing. The multiple speakers configured in the vehicle can generally be divided into two types, namely basic speakers and customized speakers. Basic speakers can meet the basic needs of audio playback, such as tweeters, bass, center speakers, subwoofers, etc.; customized speakers have special installation positions and are more in line with the user's personalized needs, such as headrest speakers, roof speakers, vibration speakers, etc.

[0072] In order to simplify the connection harness between the multimedia host and the speaker, preferably, the multimedia host can be connected to one of the two speakers through a hard wire.

[0073] Based on this, the aforementioned step 130 specifically includes:

[0074] Step D1: When it is determined based on the first pulse width modulation signal that the basic speaker is not faulty, the multimedia host broadcasts the navigation audio data through the basic speaker.

[0075] Step D2: When it is determined based on the first pulse width modulation signal that the basic speaker is faulty and based on the second pulse width modulation signal that the customized speaker is not faulty, the multimedia host broadcasts the navigation audio data based on the customized speaker.

[0076] Generally, navigation audio data is usually output through tweeters and woofers. The multimedia host can preferentially determine whether the basic speaker is faulty, and the basic speaker interacts with the multimedia host through a first pulse width modulation signal; thus, when it is determined based on the first pulse width modulation signal that the basic speaker is not faulty, the navigation audio data can be broadcast through the basic speaker. However, if it is determined based on the first pulse width modulation signal that the basic speaker is faulty, it can be further determined whether the customized speaker is faulty. The customized speaker interacts with the multimedia host through a second pulse width modulation signal, based on which, when it is determined based on the second pulse width modulation signal that the customized speaker is not faulty, the navigation audio data can be broadcast through the customized speaker.

[0077] In this embodiment, the navigation audio data is usually output through the tweeter and woofer. To cater to the user's habits, the multimedia host preferentially broadcasts the navigation audio data through the basic speaker, and broadcasts the navigation audio data through the customized speaker when the basic speaker fails. It can be understood that when both speakers fail, the aforementioned step A1 and subsequent steps are executed.

[0078] In some embodiments, before the vehicle navigation is broadcasted through the basic speaker or the customized speaker, the method further includes:

[0079] Step E1, the multimedia host switches the navigation mode of the vehicle navigation from the current mode to the simple mode.

[0080] In order to meet the needs of different drivers, navigation modes may include concise mode, detailed mode, basic mode, custom mode, etc. Concise mode provides concise vehicle navigation prompts, focusing on key turns and intersections, suitable for drivers who need less distractions. Detailed mode provides more route information, including the specific location and distance of each turn, suitable for drivers who need more precise vehicle navigation. Basic mode provides standard vehicle navigation instructions, suitable for ordinary driving needs. Custom mode allows drivers to adjust parameters such as prompt frequency and volume according to personal preferences to obtain a personalized vehicle navigation experience.

[0081] In order to ensure the accuracy of the navigation audio data output by the multimedia host, if the navigation mode is not the simple mode, the navigation mode can be switched to the simple mode so that the multimedia host can directly control the target speaker to continue broadcasting the vehicle navigation to ensure driving safety.

[0082] Optionally, in order to improve the user experience, when the power amplifier is restored, the multimedia host may reset the navigation mode, that is, switch the simple mode to the previously set navigation mode.

[0083] In some embodiments, on a normal road section, the driver's reliance on the vehicle navigation broadcast is relatively low, but if on a highway, due to the high speed of the vehicle, the driver is mostly focused on driving, and the reliance on the vehicle navigation broadcast is relatively high. Therefore, in order to specifically ensure the safety of driving on the highway, in step 120, in addition to determining whether the vehicle navigation broadcast is required, it can also be determined whether the vehicle is on a highway section.

[0084] In the present application, the multimedia host ensures driving safety through a variety of broadcast strategies. Specifically, in the event of a power amplifier failure, if there is a need for vehicle navigation broadcast, the vehicle navigation broadcast is performed based on a target speaker that is wired to the multimedia host; the target speakers include two types: basic and customized. The basic speakers are given priority for broadcasting. In the event of a basic speaker failure, the customized speakers are used for broadcasting, that is, the interruption of the vehicle navigation broadcast is avoided as much as possible, especially on highways. Continuous navigation broadcasts can effectively ensure driving safety. In extreme cases, if both target speakers fail, the vehicle navigation broadcast will no longer be broadcast. At this time, the multimedia host establishes a connection with the instrument, and controls the speaker of the instrument through prompt instructions to send out relevant prompt information to avoid the driver's excessive reliance on the vehicle navigation broadcast, thereby improving driving safety.

[0085] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0086] Corresponding to the vehicle navigation broadcasting method of the above embodiment, Figure 4 A structural block diagram of a vehicle navigation broadcasting device 4 provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0087] Reference Figure 4 The vehicle navigation broadcasting device 4 includes:

[0088] A first determination module 41 is used to determine whether the power amplifier is faulty after the multimedia host sends the audio data to the power amplifier; the audio data at least includes navigation audio data of vehicle navigation;

[0089] A second determination module 42 is used to determine whether the vehicle navigation is not muted in the event of a power amplifier failure;

[0090] The broadcast module 43 is used to broadcast the navigation audio data through the target speaker when the vehicle navigation is started and not muted; the target speaker is connected to the multimedia host by wire.

[0091] Optionally, the announcement module 43 includes a prompting unit, which is used to:

[0092] establishing a communication channel with a meter of the vehicle in the event that a target speaker is determined to be faulty based on a received pulse width modulation signal; the pulse width modulation signal is sent by the target speaker;

[0093] A first prompt instruction is sent to the instrument through the communication channel, so that the instrument prompts the vehicle navigation broadcast fault in a preset prompting manner.

[0094] Optionally, the prompt unit can also be used to:

[0095] After sending a first prompt instruction to the meter through a communication channel, when the distance between the vehicle and the nearest intersection in the driving direction is less than a preset distance threshold, a second prompt instruction is sent to the meter to cause the meter to emit a target prompt audio, which is a pre-stored prompt audio that matches the vehicle navigation instruction at the intersection.

[0096] Optionally, the prompting unit includes a determining subunit, configured to:

[0097] Determine whether the pulse width modulation signal is an invalid signal based on the pulse width modulation signal and a preset valid signal;

[0098] In the case where the pulse width modulation signal is determined to be an invalid signal, it is determined that the target speaker is faulty.

[0099] Optionally, the broadcast module 43 includes a first broadcast unit, which is used to:

[0100] After the vehicle navigation is announced through the target speaker wired to the multimedia host, it also includes:

[0101] When it is confirmed that the power amplifier has been repaired, the vehicle navigation is broadcast through the power amplifier.

[0102] Optionally, the target speaker includes a basic speaker and a customized speaker; the broadcast module 43 includes a second broadcast unit, which is used to:

[0103] In a case where it is determined based on the first pulse width modulation signal that the basic speaker is not faulty, broadcasting the navigation audio data through the basic speaker;

[0104] When it is determined based on the first pulse width modulation signal that the basic speaker is faulty and it is determined based on the second pulse width modulation signal that the customized speaker is not faulty, the navigation audio data is broadcasted based on the customized speaker.

[0105] Optionally, the broadcasting device 4 includes a switching module, which is used to:

[0106] Before the vehicle navigation is announced through the basic speaker or the customized speaker, the navigation mode of the vehicle navigation is switched from the current mode to the simplified mode.

[0107] Optionally, the switching module is specifically used for:

[0108] Once the power amplifier is determined to be repaired, reset the navigation mode of the vehicle navigation.

[0109] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0110] Figure 5 This is a schematic diagram of the physical structure of a vehicle provided in one embodiment of the present application. Figure 5 As shown, the vehicle 5 of this embodiment includes a multimedia host 50, and the multimedia host 50 includes at least one processor 51 ( Figure 5 Only one processor is shown in the figure), a memory 52, and a computer program 53 stored in the memory 52 and executable on at least one processor 51. When the processor 51 executes the computer program 53, the steps in the above-mentioned method for identifying a button of any multimedia host are implemented, for example Figure 1 Steps 110-130 are shown.

[0111] The processor 51 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0112] In some embodiments, the memory 52 may be an internal storage unit of the multimedia host 50, such as a hard disk or memory of the multimedia host 50. In other embodiments, the memory 52 may also be an external storage device of the multimedia host 50, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the multimedia host 50.

[0113] Furthermore, the memory 52 may include both an internal storage unit of the multimedia host 50 and an external storage device. The memory 52 is used to store operating devices, applications, boot loaders, data, and other programs, such as program codes of computer programs, etc. The memory 52 may also be used to temporarily store data that has been output or is to be output.

[0114] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the above-mentioned device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0115] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0116] An embodiment of the present application provides a computer program product. When the computer program product is run on a vehicle, the vehicle can implement the steps in the above-mentioned method embodiments when the computer program product is executed.

[0117] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The above-mentioned computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the above-mentioned computer program includes computer program code, and the above-mentioned computer program code can be in source code form, object code form, executable file or some intermediate form. The above-mentioned computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera / vehicle, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0118] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0119] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0120] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the above modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0121] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A vehicle navigation broadcasting method, characterized in that: include: After the multimedia host sends the audio data to the power amplifier, determining whether the power amplifier is faulty; the audio data at least includes navigation audio data of vehicle navigation; In the event of a power amplifier failure, determining whether the vehicle navigation is not muted; In the case where the vehicle navigation is not muted, broadcasting the navigation audio data through a target speaker; The target speaker is connected to the multimedia host via wire.

2. The broadcasting method according to claim 1, characterized in that: The broadcasting of the navigation audio data through the target speaker includes: establishing a communication channel with an instrument of the vehicle in the event that the target speaker is determined to be faulty based on a received pulse width modulation signal, the pulse width modulation signal being sent by the target speaker; A first prompt instruction is sent to the instrument through the communication channel, so that the instrument prompts the vehicle navigation broadcast fault in a preset prompting manner.

3. The broadcasting method according to claim 2, characterized in that: After sending the first prompt instruction to the instrument through the communication channel, the method further includes: When the distance between the vehicle and the nearest intersection in the driving direction is less than a preset distance threshold, a second prompt instruction is sent to the instrument to cause the instrument to emit a target prompt audio, wherein the target prompt audio is a pre-stored prompt audio that matches the vehicle navigation instruction at the intersection.

4. The broadcasting method according to claim 2, characterized in that: The step of determining the target speaker failure based on the received pulse width modulation signal comprises: Determining whether the pulse width modulation signal is an invalid signal based on the pulse width modulation signal and a preset valid signal; In the case where it is determined that the pulse width modulation signal is an invalid signal, it is determined that the target speaker is faulty.

5. The broadcasting method according to any one of claims 1 to 4, characterized in that: The target speaker includes a basic speaker and a customized speaker; and the broadcasting of the navigation audio data through the target speaker includes: In a case where it is determined based on the first pulse width modulation signal that the basic speaker is not faulty, broadcasting the navigation audio data through the basic speaker; When it is determined based on the first pulse width modulation signal that the basic speaker is faulty and it is determined based on the second pulse width modulation signal that the customized speaker is not faulty, the navigation audio data is broadcasted based on the customized speaker.

6. The broadcasting method according to claim 5, characterized in that: Before playing the navigation audio data through the basic speaker or the customized speaker, the method further includes: The navigation mode of the vehicle navigation is switched from a current mode to a simple mode.

7. The broadcasting method according to claim 6, characterized in that: After the navigation audio data is broadcasted through the target speaker, the method further includes: When it is determined that the power amplifier has been repaired, broadcasting the vehicle navigation through the power amplifier; Accordingly, the navigation mode of the vehicle navigation is reset.

8. A vehicle navigation broadcasting device, characterized in that: include: A first determination module is used to determine whether the power amplifier is faulty after the multimedia host sends the audio data to the power amplifier; the audio data at least includes navigation audio data of vehicle navigation; a second determination module, configured to determine whether the vehicle navigation is not muted in the event of a failure of the power amplifier; a broadcasting module, used for broadcasting the navigation audio data through a target speaker when the vehicle navigation is not muted; The target speaker is connected to the multimedia host via wire.

9. A vehicle, the vehicle being equipped with a multimedia host, the multimedia host comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the vehicle navigation broadcasting method as described in any one of claims 1 to 7 is implemented.

10. A computer program product, wherein the computer program product stores a computer program, characterized in that: When the computer program is executed by a processor, the vehicle navigation broadcasting method as described in any one of claims 1 to 7 is implemented.

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