Volume control system

Abstract

The invention discloses a volume control system, which relates to the technical field of vehicle infotainment, and comprises a signal receiving and processing module, a display module, a central control module and a sound control module, the signal receiving and processing module is used for receiving alarm information sent by an automobile and sending the alarm information to the display module; the display module is electrically connected with the signal receiving and processing module, and the display module is used for receiving the alarm information from the signal receiving and processing module and broadcasting alarm sound. The volume control system provided by the invention can automatically receive and process the alarm information sent by the automobile, broadcast the alarm sound through the display module and synchronously send the alarm information to the central control module, and the central control module automatically generates a corresponding adjustment strategy according to the volume condition of other media being played in the automobile so as to adjust the volume of the automobile. And the volume of the media in the vehicle is controlled and adjusted through the sound control module, so that the dangerous condition that the alarm sound is covered due to over-high volume of the media is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle computers, and in particular to a volume control system. Background Art

[0002] As car driving changes, the acoustic boundaries of the car cabin also change rapidly. Especially as users have higher requirements for the experience of in-vehicle systems, the car cabin has begun to design entertainment systems to enhance the user experience, which has further broadened the acoustic boundaries of the cabin.

[0003] Among a large number of acoustic types, car alarm sounds are an important interactive means to ensure safety when driving a car. However, in the current complex in-car acoustic environment, it is often difficult to ensure the coordination between car alarm sounds and other media sounds. That is, when the car alarm sounds, the volume of the media sounds in the car will not be automatically lowered. People in the car need to manually pause or lower the media sounds, which greatly reduces the user experience. Sometimes, the alarm sound may be covered by the excessive media volume, threatening the user's driving safety. In this regard, we propose a volume control system. Summary of the invention

[0004] In order to solve the above technical problems, a volume control system is provided, and the technical solution solves the above problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A volume control system, comprising: a signal receiving and processing module, a display module, a central control module and a sound control module;

[0007] The signal receiving and processing module is used to receive the alarm information issued by the car and send the alarm information to the display module;

[0008] The display module is electrically connected to the signal receiving and processing module, and the display module is used to receive the alarm information from the signal receiving and processing module and broadcast the alarm sound, and simultaneously send the alarm sound information to the central control module;

[0009] The central control module is electrically connected to the display module. After receiving the alarm sound information from the display module, the central control module automatically generates a corresponding adjustment strategy according to the volume of other media being played in the car.

[0010] The sound control module is electrically connected to the central control module, and the sound control module is used to control and adjust the volume of the media played in the car according to the adjustment strategy generated by the central control module.

[0011] Preferably, the signal receiving and processing module comprises: a signal receiving unit, a signal format conversion unit and an information transmission unit;

[0012] The signal receiving unit is used to receive the alarm information sent by the car;

[0013] The signal format conversion unit is used to convert the received car alarm signal into a unified signal format that can be recognized by the display module, and convert the analog signal into a digital signal through analog-to-digital conversion technology;

[0014] The information transmission unit is used to send the converted alarm information to the display module.

[0015] Preferably, the display module comprises: an alarm sound receiving unit, an alarm sound playing unit and an information sending unit;

[0016] The alarm sound receiving unit is used to receive the alarm information sent from the signal receiving and processing module;

[0017] The alarm sound playing unit is used to convert the received alarm information into an audible alarm sound for playing, so that the people in the car can perceive the alarm;

[0018] The information sending unit is used to send the alarm sound information to the central control module synchronously while playing the alarm sound.

[0019] Preferably, the central control module includes: a volume analysis unit, a strategy generation unit and an instruction sending unit;

[0020] The volume analysis unit is used to analyze the volume of other media being played in the car and understand the size and type of the current media volume;

[0021] The strategy generation unit is used to automatically generate a corresponding adjustment strategy according to the media volume situation and alarm information obtained by the volume analysis unit;

[0022] The instruction sending unit is used to send the generated adjustment strategy to the sound control module in the form of an instruction.

[0023] Preferably, the sound control module comprises: a strategy receiving unit and a volume adjustment unit;

[0024] The strategy receiving unit is used to receive the media volume adjustment strategy sent by the central control module;

[0025] The volume adjustment unit is used to perform specific adjustment operations on the volume of the media being played in the car according to the received adjustment strategy.

[0026] Preferably, the volume analysis unit analyzes the volume of other media being played in the car, and understands the size and type of the current media volume, specifically including:

[0027] By establishing a connection with the audio system, the audio signal of the media being played is collected from the output path of the audio system in the car;

[0028] Pre-process the collected audio signals to remove noise and interference;

[0029] The media volume is determined by calculating the root mean square value of the audio signal, wherein the root mean square value calculation formula of the audio signal is:

[0030]

[0031] In the formula, RMS represents the root mean square value of the audio signal, x i represents the amplitude value of the audio signal at discrete time point i, and N represents the number of sampling points;

[0032] Performing spectrum analysis on the audio signal to determine the frequency distribution of the signal and extracting characteristic parameters of the audio signal, the characteristic parameters including short-time energy, zero-crossing rate and Mel-frequency cepstrum coefficients;

[0033] The media volume and type information obtained by analysis is output to the strategy generation unit.

[0034] Preferably, the strategy generation unit automatically generates a corresponding adjustment strategy according to the media volume situation and the alarm information obtained by the volume analysis unit, specifically including:

[0035] The strategy generation unit first receives the media volume size and type information from the volume analysis unit, and the alarm information from the display module;

[0036] Prioritize alerts based on their type and urgency;

[0037] Set a media volume threshold. When the media volume is higher than the threshold, an aggressive reduction strategy is adopted; when the media volume is lower than the threshold, a more gradual reduction strategy is adopted.

[0038] Preferably, the media volume adjustment calculation method is:

[0039] Set the current media volume value to V current , the target volume is V target , adjust the time to T and the speed to S;

[0040] The linear adjustment speed calculation formula is:

[0041]

[0042] The volume at time t (0≤t≤T) is V(t) = V current -S×t

[0043] Over time, the volume is gradually reduced at the adjusted speed until the target volume is reached.

[0044] Preferably, the customer adjusts the media sound according to the driving habits by presetting the vehicle speed-volume control relationship through the central control module.

[0045] Preferably, the preset vehicle speed-volume control relationship is used to adjust the media sound, specifically including:

[0046] The customer finds the volume control setting option in the car's central control system interface, enters the setting interface for the preset vehicle speed-volume relationship, and sets the vehicle speed range and volume respectively;

[0047] When the vehicle is driving, the central control module monitors the vehicle speed in real time and automatically adjusts the volume of the media in the vehicle according to the preset speed-volume relationship;

[0048] Among them, the calculation method for adjusting the volume of the media in the car is:

[0049] Assume that the vehicle speed is V, the media volume is Y, and there are m vehicle speed intervals preset, namely [V1, V2], [V2, V3], ..., [V m ,V m+1 ], the corresponding media volumes are Y1, Y2, ..., Y m ;

[0050] When the vehicle speed V is in a certain speed interval [V j ,V j+1 ], the media volume Y is calculated using the linear difference method, and the calculation formula is:

[0051]

[0052] Where Y j and Y j+1 Respectively represent the vehicle speed range [V j ,V j+1 ]The media volume value at both ends, V j and V j+1 Indicates the boundary value of the vehicle speed range.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] The volume control system proposed in the present invention can automatically receive and process the alarm information issued by the car, broadcast the alarm sound through the display module, and synchronously send the alarm information to the central control module. The central control module automatically generates a corresponding adjustment strategy according to the volume of other media being played in the car, and controls and adjusts the volume of the media in the car through the sound control module, which effectively solves the problem of mutual coordination between the car alarm prompt sound and other media sounds in a complex acoustic environment in the car, avoids the dangerous situation of covering up the alarm sound due to excessive media volume, thereby improving the user's driving safety and usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a module connection flow chart of the present invention. DETAILED DESCRIPTION

[0056] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0057] Reference Figure 1 As shown, a volume control system includes: a signal receiving and processing module, a display module, a central control module and a sound control module;

[0058] As the front-end link of the system, the signal receiving and processing module is responsible for receiving the alarm information issued by the car. Once the alarm information is received, it will be processed and sent to the display module. This processing process ensures the accuracy and stability of the alarm information, laying a solid foundation for subsequent operations.

[0059] The display module and the signal receiving and processing module work closely together through electrical connection. When receiving the alarm information from the signal receiving and processing module, the display module immediately exerts its powerful function to convert the alarm information into an audible alarm sound for playback. In this way, people in the car can perceive the existence of the alarm in time, which improves driving safety. At the same time, the display module also sends the alarm sound information to the central control module while broadcasting the alarm sound, ensuring smooth information flow throughout the system.

[0060] The central control module is electrically connected to the display module. After receiving the alarm sound information from the display module, it automatically begins to conduct in-depth analysis based on the volume of other media being played in the car. Through comprehensive consideration of the size and type of media volume, the central control module can accurately generate corresponding adjustment strategies. The strategy generation process fully reflects the intelligence and efficiency of the central control module, and provides a strong guarantee for the reasonable adjustment of the volume.

[0061] The sound control module is electrically connected to the central control module. Its main responsibility is to make specific control adjustments to the volume of the media played in the car according to the adjustment strategy generated by the central control module. Whether it is lowering the volume to highlight the alarm sound or restoring the media volume after the alarm ends, the sound control module can accurately execute the instructions of the central control module to ensure the coordination and stability of the audio environment in the car.

[0062] The volume control system effectively solves the problem of coordination between car alarm sounds and other media sounds in complex in-car acoustic environments through close cooperation between various modules, avoiding the dangerous situation where the alarm sound is covered up by excessive media volume, thereby greatly improving the user's driving safety and user experience.

[0063] First, let's look at the signal receiving and processing module, which is composed of multiple units. The signal receiving unit is used to receive the alarm information issued by the car. The signal format conversion unit converts the received car alarm signal into a unified signal format that can be recognized by the display module. When an analog signal is received, it is converted into a digital signal through analog-to-digital conversion technology. The information transmission unit sends the converted alarm information to the display module.

[0064] Next is the display module. The alarm sound receiving unit is used to receive the alarm information from the signal receiving and processing module. The alarm sound playing unit converts the received alarm information into an audible alarm sound for playing. The information sending unit sends the alarm sound information to the central control module synchronously while playing the alarm sound.

[0065] The central control module plays a core role in the volume control system. The volume analysis unit collects the media audio signal being played from the output path of the in-vehicle audio system, performs preprocessing to remove noise and interference, and determines the media volume by calculating the root mean square value of the audio signal. At the same time, the audio signal is spectrally analyzed to extract short-time energy, zero-crossing rate and Mel-frequency cepstrum coefficients to understand the current media volume and type. The strategy generation unit automatically generates a corresponding adjustment strategy based on the media volume and alarm information obtained by the volume analysis unit. First, the media volume and type information from the volume analysis unit and the alarm information from the display module are received, and then the priority is determined according to the type and urgency of the alarm, and the media volume threshold is set. When the media volume is higher than the threshold, an aggressive reduction strategy is adopted; when the media volume is lower than the threshold, a relatively gentle reduction strategy is adopted. The instruction sending unit sends the generated adjustment strategy to the sound control module in the form of an instruction.

[0066] Finally, there is the sound control module. The strategy receiving unit is used to receive the media volume adjustment strategy sent by the central control module. The volume adjustment unit performs specific adjustments on the volume of the media being played in the car according to the received adjustment strategy. It can achieve precise adjustment of the media volume by controlling the gain of the audio amplifier or the attenuation degree of the audio signal.

[0067] The volume analysis unit analyzes the volume of other media being played in the car to understand the size and type of the current media volume, including:

[0068] By establishing a connection with the audio system, the audio signal of the media being played is collected from the output path of the audio system in the car;

[0069] Pre-process the collected audio signals to remove noise and interference;

[0070] The media volume is determined by calculating the root mean square value of the audio signal, wherein the root mean square value calculation formula of the audio signal is:

[0071]

[0072] In the formula, RMS represents the root mean square value of the audio signal, x i represents the amplitude value of the audio signal at discrete time point i, and N represents the number of sampling points;

[0073] Performing spectrum analysis on the audio signal to determine the frequency distribution of the signal and extracting characteristic parameters of the audio signal, the characteristic parameters including short-time energy, zero-crossing rate and Mel-frequency cepstrum coefficients;

[0074] The media volume and type information obtained by analysis is output to the strategy generation unit.

[0075] The strategy generation unit automatically generates a corresponding adjustment strategy according to the media volume situation and the alarm information obtained by the volume analysis unit, specifically including:

[0076] The strategy generation unit receives the media volume size and type information from the volume analysis unit and the alarm information from the display module, which provides data support for subsequent decision-making.

[0077] The policy generation unit will analyze based on the type of alarm. Different types of alarms have different importance and urgency. For example, critical security alarms require immediate attention, while less urgent alarms can be handled in a gentle manner. The policy generation unit will also comprehensively consider the urgency of the alarm and give urgent alarms a higher priority.

[0078] In order to formulate the adjustment strategy, the strategy generation unit sets a media volume threshold. When the media volume is higher than the threshold, an aggressive reduction strategy is adopted, such as quickly reducing the media volume to a lower level or a silent state. When the media volume is lower than the threshold, a gentle reduction strategy is adopted, such as gradually reducing the media volume.

[0079] Through the above steps, the strategy generation unit can automatically generate adjustment strategies according to different situations, balance the relationship between media volume and alarm sound, and improve driving safety and comfort.

[0080] The media volume adjustment calculation method is:

[0081] Set the current media volume value to V current , the target volume is V target , adjust the time to T and the speed to S;

[0082] The linear adjustment speed calculation formula is:

[0083]

[0084] The volume at time t (0≤t≤T) is V(t) = V current -S×t

[0085] Over time, the volume is gradually reduced at the adjusted speed until the target volume is reached.

[0086] Customers can adjust the media sound according to their driving habits by presetting the vehicle speed-volume relationship through the central control module.

[0087] The preset vehicle speed-volume relationship is used to adjust the media sound, including:

[0088] The customer finds the volume control setting option in the car's central control system interface, enters the setting interface for the preset vehicle speed-volume relationship, and sets the vehicle speed range and volume respectively;

[0089] When the vehicle is driving, the central control module monitors the vehicle speed in real time and automatically adjusts the volume of the media in the vehicle according to the preset speed-volume relationship;

[0090] Among them, the calculation method for adjusting the volume of the media in the car is:

[0091] Assume that the vehicle speed is V, the media volume is Y, and there are m vehicle speed intervals preset, namely [V1, V2], [V2, V3], ..., [V m ,V m+1 ], the corresponding media volumes are Y1, Y2, ..., Y m ;

[0092] When the vehicle speed V is in a certain speed interval [V j,V j+1 ], the media volume Y is calculated using the linear difference method, and the calculation formula is:

[0093]

[0094] Where Y j and Y j+1 Respectively represent the vehicle speed range [V j ,V j+1 ]The media volume value at both ends, V j and V j+1 Indicates the boundary value of the vehicle speed range.

[0095] The use process of the present invention is as follows: the system receives the alarm information issued by the car, converts the signal format and sends it out, broadcasts the alarm sound after receiving the alarm information, and simultaneously sends the alarm sound information, analyzes the volume of the media being played in the car, generates an adjustment strategy based on the alarm information and the media volume, receives the adjustment strategy, and performs specific adjustment operations on the media volume in the car. Users can preset the comparison relationship between vehicle speed and volume according to driving habits, and realize automatic adjustment of the media volume when the vehicle speed changes.

[0096] To sum up, the advantages of the present invention are: it can automatically receive and process automobile alarm information, play it through the display module and synchronize it to the central control module, generate an adjustment strategy according to the media volume situation in the car, and adjust the media volume by the sound control module, effectively solving the problem of coordination between the alarm prompt sound and the media sound in the acoustic environment in the car, avoiding the danger of the media volume being too high to cover the alarm sound, and improving the user's driving safety and usage experience.

[0097] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A volume control system, characterized in that: include: Signal receiving and processing module, display module, central control module and sound control module; The signal receiving and processing module is used to receive the alarm information issued by the car and send the alarm information to the display module; The display module is electrically connected to the signal receiving and processing module, and the display module is used to receive the alarm information from the signal receiving and processing module and broadcast the alarm sound, and simultaneously send the alarm sound information to the central control module; The central control module is electrically connected to the display module. After receiving the alarm sound information from the display module, the central control module automatically generates a corresponding adjustment strategy according to the volume of other media being played in the car. The sound control module is electrically connected to the central control module, and the sound control module is used to control and adjust the volume of the media played in the car according to the adjustment strategy generated by the central control module.

2. A volume control system according to claim 1, characterized in that: The signal receiving and processing module includes: a signal receiving unit, a signal format conversion unit and an information transmission unit; The signal receiving unit is used to receive the alarm information sent by the car; The signal format conversion unit is used to convert the received car alarm signal into a unified signal format that can be recognized by the display module, and convert the analog signal into a digital signal through analog-to-digital conversion technology; The information transmission unit is used to send the converted alarm information to the display module.

3. A volume control system according to claim 1, characterized in that: The display module includes: an alarm sound receiving unit, an alarm sound playing unit and an information sending unit; The alarm sound receiving unit is used to receive the alarm information sent from the signal receiving and processing module; The alarm sound playing unit is used to convert the received alarm information into an audible alarm sound for playing, so that the people in the car can perceive the alarm; The information sending unit is used to send the alarm sound information to the central control module synchronously while playing the alarm sound.

4. A volume control system according to claim 1, characterized in that: The central control module includes: a volume analysis unit, a strategy generation unit and an instruction sending unit; The volume analysis unit is used to analyze the volume of other media being played in the car and understand the size and type of the current media volume; The strategy generation unit is used to automatically generate a corresponding adjustment strategy according to the media volume situation and alarm information obtained by the volume analysis unit; The instruction sending unit is used to send the generated adjustment strategy to the sound control module in the form of an instruction.

5. A volume control system according to claim 1, characterized in that: The sound control module includes: a strategy receiving unit and a volume adjustment unit; The strategy receiving unit is used to receive the media volume adjustment strategy sent by the central control module; The volume adjustment unit is used to perform specific adjustment operations on the volume of the media being played in the car according to the received adjustment strategy.

6. A volume control system according to claim 4, characterized in that: The volume analysis unit analyzes the volume of other media being played in the car to understand the size and type of the current media volume, including: By establishing a connection with the audio system, the audio signal of the media being played is collected from the output path of the audio system in the car; Pre-process the collected audio signals to remove noise and interference; The media volume is determined by calculating the root mean square value of the audio signal, wherein the root mean square value calculation formula of the audio signal is: In the formula, RMS represents the root mean square value of the audio signal, x i represents the amplitude value of the audio signal at discrete time point i, and N represents the number of sampling points; Performing spectrum analysis on the audio signal to determine the frequency distribution of the signal and extracting characteristic parameters of the audio signal, the characteristic parameters including short-time energy, zero-crossing rate and Mel-frequency cepstrum coefficients; The media volume and type information obtained by analysis is output to the strategy generation unit.

7. A volume control system according to claim 1, characterized in that: The strategy generation unit automatically generates a corresponding adjustment strategy according to the media volume situation and alarm information obtained by the volume analysis unit, specifically including: The strategy generation unit first receives the media volume size and type information from the volume analysis unit, and the alarm information from the display module; Prioritize alerts based on their type and urgency; Set a media volume threshold. When the media volume is higher than the threshold, an aggressive reduction strategy is adopted; when the media volume is lower than the threshold, a more gradual reduction strategy is adopted.

8. A volume control system according to claim 7, characterized in that: The media volume adjustment calculation method is: Set the current media volume value to V current , the target volume is V target , adjust the time to T and the speed to S; The linear adjustment speed calculation formula is: The volume at time t (0≤t≤T) is V(t) = V current -S×t Over time, the volume is gradually reduced at the adjusted speed until the target volume is reached.

9. A volume control system according to claim 1, characterized in that: Customers can adjust the media sound according to their driving habits by presetting the vehicle speed-volume relationship through the central control module.

10. A volume control system according to claim 9, characterized in that: The preset vehicle speed-volume relationship is used to adjust the media sound, including: The customer finds the volume control setting option in the car's central control system interface, enters the setting interface for the preset vehicle speed-volume relationship, and sets the vehicle speed range and volume respectively; When the vehicle is driving, the central control module monitors the vehicle speed in real time and automatically adjusts the volume of the media in the vehicle according to the preset speed-volume relationship; Among them, the calculation method for adjusting the volume of the media in the car is: Assume that the vehicle speed is V, the media volume is Y, and there are m vehicle speed intervals preset, namely [V1, V2], [V2, V3], ..., [V m ,V m+1 ], the corresponding media volumes are Y1, Y2, ..., Y m ; When the vehicle speed V is in a certain speed interval [V j ,V j+1 ], the media volume Y is calculated using the linear difference method, and the calculation formula is: Where Y j and Y j+1 Respectively represent the vehicle speed range [V j ,V j+1 ]The media volume value at both ends, V j and V j+1 Indicates the boundary value of the vehicle speed range.

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