A method, device, system, storage medium, and vehicle for controlling vehicle lights.

Abstract

This application discloses a vehicle lighting control method, device, system, storage medium, and vehicle. The method includes: acquiring a playing music data stream in a preset scenario; processing the music data stream in real time to extract frequency features, amplitude features, and rhythm features; converting the extracted frequency features, amplitude features, and rhythm features into lighting parameter commands for controlling a preset lighting actuator according to a predefined feature-lighting mapping rule, wherein the preset lighting actuator is used to control the lighting inside the vehicle cabin at least; generating a drive signal based on the lighting parameter commands and sending it to the preset lighting actuator to cause the preset lighting actuator to produce a lighting effect synchronized with the music data stream. This solution can enable lighting to produce dynamic effects synchronized with entertainment content in specific scenarios, thereby improving the user experience.

Description

Technical Field

[0001] This application relates to the field of automotive electronics technology, and in particular to a vehicle lighting control method, device, system, storage medium, and vehicle. Background Technology

[0002] With the increasing demands for intelligent and personalized vehicles, the functions of in-vehicle lighting systems are no longer limited to basic illumination. Traditional vehicle ambient lighting or exterior rearview mirror laser lights are mostly used for static projection (such as brand logos or welcome lights), with fixed functions, lack of interactivity, and inability to interact with users' personal entertainment content. Therefore, there is an urgent need to provide a vehicle lighting control method that can make the lights follow the entertainment content to produce dynamic visual effects in specific scenarios, thereby improving the user experience. Summary of the Invention

[0003] This application provides a vehicle lighting control method, device, system, storage medium, and vehicle, which enables the lighting to produce dynamic effects synchronized with entertainment content in specific scenarios, thereby enhancing the user experience.

[0004] This application provides a vehicle lighting control method, including: In a preset scenario, acquire the music data stream that is currently playing; The music data stream is processed in real time to extract frequency features, amplitude features, and rhythm features. According to the predefined feature-lighting mapping rules, the extracted frequency features, amplitude features and rhythm features are converted into lighting parameter commands for controlling the preset lighting actuator, wherein the preset lighting actuator is used to control the lighting in the vehicle cabin at least. Based on the light parameter instructions, a drive signal is generated and sent to a preset light actuator, so that the preset light actuator produces a light effect synchronized with the music data stream.

[0005] The beneficial effects of this application are as follows: By acquiring music data streams in preset scenarios, the music-linked lighting function can be enabled only in legal and compliant safe environments. Through real-time acquisition and processing of the playing music data stream, the three core features of the music—frequency, amplitude, and rhythm—are extracted and independently mapped to different lighting control parameters. This allows for the creation of layered, dynamic lighting effects that match the musical atmosphere, overcoming the limitation of traditional in-vehicle ambient lighting that only supports static preset modes and cannot dynamically change with the music content. Thus, it achieves dynamic lighting effects synchronized with entertainment content in specific scenarios, enhancing the user experience.

[0006] In one embodiment, acquiring the currently playing music data stream includes: Establish a wireless communication link with an authorized mobile terminal; The music data stream is received from the mobile terminal via the wireless communication link.

[0007] In one embodiment, the method further includes: When establishing the wireless communication link, encryption authentication is performed on the mobile terminal; After establishing the wireless communication link, it is determined whether the vehicle is stationary; wherein, the receipt of the music data stream from the mobile terminal is performed after confirming that the encryption authentication is successful and the vehicle is stationary.

[0008] In one embodiment, the real-time processing of the music data stream includes: Perform analog-to-digital conversion and spectrum analysis on the music data stream; Based on the spectral analysis results, the low-frequency, mid-frequency, and high-frequency components in the music data stream are calculated and distinguished as the frequency features.

[0009] In one embodiment, according to a predefined feature-light mapping rule, the extracted frequency features, amplitude features, and rhythm features are respectively converted into light parameter commands for controlling a preset light actuator, including: The changes in the low-frequency components are mapped to instructions for controlling the preset lighting actuator to output light colors that gradually change towards a predetermined color system. The changes in the intermediate frequency component are mapped to commands that control the preset lighting actuator to output light intensity adjustment. The changes in the high-frequency components are mapped to instructions that control the changes in the complexity of the projection pattern of the preset lighting actuator.

[0010] In one embodiment, according to a predefined feature-light mapping rule, the extracted frequency features, amplitude features, and rhythm features are respectively converted into light parameter commands for controlling a preset light actuator, and the method further includes: The beat speed in the rhythmic features is mapped to an instruction that controls the flashing frequency of the preset lighting actuator. The volume amplitude value in the amplitude feature is mapped to an instruction that controls the beam projection area or diffusion range of the preset lighting actuator.

[0011] In one embodiment, generating a drive signal based on the light parameter command and sending it to a preset light actuator includes: The lighting parameter commands are parsed into signals for controlling the output parameters of the laser diode and signals for controlling the motion mode of the galvanometer system. The signal is sent to the preset lighting actuator to drive the laser diode and the galvanometer system respectively.

[0012] In one embodiment, the method further includes: During the process of the preset lighting actuator producing the lighting effect, the vehicle's speed is continuously monitored; Based on the driving speed, adjust one or more parameter values ​​in the lighting parameter command to reduce the visual intensity of the lighting effect while driving.

[0013] In one embodiment, after real-time processing of the music data stream, the method further includes: Based on the extracted frequency features, amplitude features, and rhythm features, the style category of the music data stream is identified; Based on the identified style category, select the optimized feature-light mapping rule corresponding to the style category.

[0014] In one embodiment, acquiring the currently playing music data stream includes: When the vehicle is stationary, a command to activate the music and lighting linkage is received through the in-vehicle user interface; In response to the instruction, the music signal detection channel is activated to obtain the music data stream being played from the vehicle audio bus.

[0015] In one embodiment, the method further includes: Receive custom projection pattern data sent by the mobile terminal via a wireless communication link; The custom projection pattern data is stored in a local storage device, and the pattern generation part in the feature-light mapping rule is adjusted according to the custom projection pattern data. When generating the light parameter instructions, the preset light actuator is controlled to project a light effect containing the custom projection pattern based on the adjusted feature-light mapping rules.

[0016] This application also provides a vehicle lighting control device, including: The acquisition module is used to acquire the music data stream that is currently playing under preset scenarios; The extraction module is used to process the music data stream in real time to extract frequency features, amplitude features, and rhythm features. The conversion module is used to convert the extracted frequency features, amplitude features and rhythm features into lighting parameter commands for controlling a preset lighting actuator according to a predefined feature-lighting mapping rule, wherein the preset lighting actuator is used to control the lighting in the vehicle cabin at least. The generation module is used to generate a drive signal based on the light parameter instructions and send it to a preset light actuator so that the preset light actuator produces a light effect synchronized with the music data stream.

[0017] In one embodiment, the acquisition module includes: Establish a submodule for establishing a wireless communication link with an authorized mobile terminal; A receiving submodule is used to receive the music data stream from the mobile terminal via the wireless communication link.

[0018] In one embodiment, the acquisition module further includes: The authentication submodule is used to perform encrypted authentication on the mobile terminal when establishing the wireless communication link; The determination submodule is used to determine whether the vehicle is stationary after the wireless communication link is established; wherein, the execution of receiving the music data stream from the mobile terminal is performed after confirming that the encryption authentication is successful and the vehicle is stationary.

[0019] In one embodiment, the extraction module includes: The conversion submodule is used to perform analog-to-digital conversion and spectrum analysis on the music data stream; The calculation submodule is used to calculate and distinguish the low-frequency components, mid-frequency components and high-frequency components in the music data stream based on the spectrum analysis results, as the frequency features.

[0020] In one embodiment, the conversion module includes: The first mapping submodule is used to map the changes in the low-frequency components into instructions to control the preset lighting actuator to output light color gradually changing towards a predetermined color system. The second mapping submodule is used to map the changes in the intermediate frequency component into instructions for controlling the preset lighting actuator to output light intensity adjustment. The third mapping submodule is used to map the changes in the high-frequency components into instructions that control the changes in the complexity of the projection pattern of the preset lighting actuator.

[0021] In one embodiment, the conversion module further includes: The fourth mapping submodule is used to map the beat speed in the rhythm feature into an instruction to control the flashing frequency of the preset light actuator. The fifth mapping submodule is used to map the volume amplitude value in the amplitude feature into an instruction to control the beam projection area or diffusion range of the preset lighting actuator.

[0022] In one embodiment, the generation module includes: The parsing submodule is used to parse the light parameter instructions into signals for controlling the output parameters of the laser diode and signals for controlling the motion mode of the galvanometer system. The transmitting submodule is used to send the signal to the preset lighting actuator to drive the laser diode and the galvanometer system respectively.

[0023] In one embodiment, the apparatus further includes: The monitoring module is used to continuously monitor the vehicle's speed during the process of the preset lighting actuator producing the lighting effect; The adjustment module is used to adjust one or more parameter values ​​in the light parameter command according to the driving speed, so as to reduce the visual intensity of the light effect when driving.

[0024] In one embodiment, the apparatus further includes: The identification module is used to identify the style category of the music data stream based on the extracted frequency features, amplitude features, and rhythm features; The selection module is used to select the optimized feature-light mapping rule corresponding to the identified style category.

[0025] In one embodiment, the acquisition module includes: The first receiving module is used to receive a command to start the music and lighting linkage through the in-vehicle user interface when the vehicle is stationary. A response module is used to respond to the instruction by activating the music signal detection channel to obtain the music data stream being played from the vehicle audio bus.

[0026] In one embodiment, the apparatus further includes: The second receiving module is used to receive custom projection pattern data sent by the mobile terminal through a wireless communication link; The storage module is used to store the custom projection pattern data in a local storage device and adjust the pattern generation part of the feature-light mapping rule according to the custom projection pattern data. The control module is used to control the preset light actuator to project a light effect containing the custom projection pattern based on the adjusted feature-light mapping rules when generating the light parameter instructions.

[0027] This application also provides a vehicle lighting control system, including: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to implement the vehicle lighting control method described in any of the above embodiments.

[0028] This application also provides a computer-readable storage medium, which, when the instructions in the storage medium are executed by a processor corresponding to the vehicle lighting control system, enables the vehicle lighting control system to implement the vehicle lighting control method described in any of the above embodiments.

[0029] This application also provides a vehicle, including: The vehicle lighting control device as described in any of the above embodiments; or the vehicle lighting control system as described in any of the above embodiments.

[0030] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0031] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of a vehicle lighting control method according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a vehicle lighting control device according to an embodiment of this application; Figure 3 This is a schematic diagram of the hardware structure of a vehicle lighting control system according to one embodiment of this application. Detailed Implementation

[0033] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0034] The vehicle lighting control method provided in this application is applied to passenger vehicles equipped with an intelligent ambient lighting system. The hardware includes an on-board central control processor, a wireless communication module, and interior / exterior lighting actuators. In this embodiment, the lighting actuator uses a projection-type ambient light integrating a laser diode and a galvanometer system, which can achieve multi-dimensional adjustment of color, brightness, and pattern.

[0035] Figure 1This is a flowchart of a vehicle lighting control method according to an embodiment of this application, such as... Figure 1 As shown, the method can be implemented as follows: S101-S104: In step S101, under a preset scenario, the music data stream that is currently playing is acquired; In step S102, the music data stream is processed in real time to extract frequency features, amplitude features, and rhythm features. In step S103, according to the predefined feature-lighting mapping rules, the extracted frequency features, amplitude features and rhythm features are respectively converted into lighting parameter instructions for controlling the preset lighting actuator, wherein the preset lighting actuator is used to control the lighting in the vehicle cabin at least. In step S104, a drive signal is generated based on the light parameter command and sent to a preset light actuator so that the preset light actuator produces a light effect synchronized with the music data stream.

[0036] Under preset scenarios, the system acquires the currently playing music data stream. These preset scenarios refer to specific usage scenarios pre-set in the system that meet safety and operational conditions. They typically refer to leisure scenarios where the vehicle is stationary, but may also include scenarios such as waiting in the car or the vehicle being parked with the engine off. The core purpose is to ensure driving safety; dynamic music and lighting effects are only activated in scenarios that will not interfere with the driver's normal driving, avoiding distracting the driver with flashy dynamic lights while driving, and also complying with vehicle lighting regulations.

[0037] To acquire the music data stream currently playing, you can choose to establish a wireless communication link with the mobile terminal to acquire the music data, or you can directly acquire the music data from the vehicle's audio bus.

[0038] When music data is obtained via a mobile terminal, the system first establishes a wireless communication link with the authorized mobile terminal, and then receives the music data stream sent from the mobile terminal through this link. For example, a user can activate the music-linked function of the car lights through a dedicated application on the mobile terminal. When the user wants to use music played on their phone to link the lights, the system will first establish a stable communication connection with the pre-bound authorized mobile terminal via wireless methods such as Bluetooth or Wi-Fi, building a stable data transmission path. During the establishment of the wireless communication link, the system performs encryption authentication on the mobile terminal to complete identity verification, confirming that the device is a legitimate device that has been pre-bound, preventing unauthorized devices from accessing the vehicle system and causing network security or information security risks. After the wireless communication link is established, the system will also perform scene verification to determine whether the vehicle is currently stationary. Only after the encryption authentication is successful and the vehicle is confirmed to be stationary will the system officially begin receiving the music data stream.

[0039] If the user chooses to play music using the in-vehicle player, they can directly receive the command to activate the music and lighting linkage through the in-vehicle user interface. After the system responds to the command, it opens the music signal detection channel and directly obtains the currently playing music data stream from the in-vehicle audio bus.

[0040] After acquiring the music data stream, the music data stream is processed in real time to extract frequency features, amplitude features, and rhythm features.

[0041] The process of extracting frequency features involves two steps. First, analog-to-digital conversion and spectrum analysis are performed on the music data stream. Music transmitted by mobile terminals is mostly digital signals, while some analog signals acquired from the bus undergo analog-to-digital conversion through format conversion, transforming the continuous music waveform signal into a discrete digital signal that the onboard processor can recognize and calculate. Then, based on the spectrum analysis results, the low-frequency, mid-frequency, and high-frequency components in the music data stream are calculated and distinguished as the final frequency features. For example, this step is equivalent to splitting the originally mixed music signal according to different frequency bands, obtaining energy distribution data for each frequency band, and then calculating the signal strength of each frequency band based on the spectrum analysis results. Finally, the mixed signal is clearly distinguished into three independent parts: low-frequency, mid-frequency, and high-frequency. These three components are the core frequency features subsequently used to control the lights.

[0042] The process of extracting amplitude features is relatively straightforward. Amplitude features correspond to changes in the volume of music. For real-time acquired digital music signals, the amplitude of the signal waveform at each moment is calculated, which is the maximum distance the waveform deviates from the center zero point. This amplitude directly corresponds to the volume intensity of the music. The system then normalizes the calculated amplitude, converting the original amplitude into a standard value between 0 and 1, making it easier to directly map to lighting control parameters. The final standardized volume amplitude is the amplitude feature we need.

[0043] Extracting rhythm features requires specialized beat detection algorithms. Rhythm features describe the tempo and position of the beat in music. The first step is to extract the energy envelope of the music signal, filtering out high-frequency noise to obtain a curve showing the overall energy change over time. The periodic peaks of the energy correspond to the positions of the stressed beats. The second step is to count the number of stressed beats per unit time, calculating the beats per minute (BPM). This BPM is the core parameter of the rhythm features. The system also marks the time of each stressed beat for subsequent synchronized triggering of corresponding light changes.

[0044] For example, in one embodiment, the system defines a detailed and specific one-to-one mapping relationship between music features and light parameters. Specifically, the low-frequency components in the approximately 20-250Hz band of the music signal are mapped to instructions controlling the color or hue of the light; the higher the intensity of the low-frequency components, the deeper the color leans towards the red hue, forming a gradient from dark blue to red, for example. The mid-frequency components in the approximately 250-2000Hz band are mapped to instructions controlling the brightness of the light; the intensity of the mid-frequency components is directly positively correlated with the intensity of the light's bright and dark pulse effects. The high-frequency components in the approximately 2000-20000Hz band are mapped to instructions controlling the complexity of the projected pattern; when the high-frequency components are enhanced, the system will generate a projected pattern with denser geometric lines and a more complex composition. Amplitude features, specifically volume amplitude (range, for example, 0-100 dB), are mapped to instructions controlling the beam projection area or diffusion range; the higher the volume, the larger the beam coverage area. The tempo (range, for example, 60-180 beats per minute) in the rhythmic features is mapped to commands that control the flashing or changing frequency of the lighting effects, synchronizing the dynamic frequency of the lights with the tempo of the music. By establishing a precise one-to-one mapping between different music feature parameters and the specific lighting control commands mentioned above, the system can efficiently transform the physical attributes of music into rich, dynamic visual expressions that are highly synchronized with auditory perception. Furthermore, by presetting reasonable upper limits for the output parameters of each mapping relationship (e.g., setting the maximum projectable beam diffusion area for volume intensity and setting an upper limit for pattern complexity for high-frequency intensity), it can be effectively ensured that the dynamic lighting effects produced under any music input condition are always within the range permitted by human visual comfort and safety regulations, thus guaranteeing the universality and safety of the solution.

[0045] After feature extraction is completed, the extracted frequency features, amplitude features and rhythm features are converted into lighting parameter commands for controlling the preset lighting actuators according to the predefined feature-lighting mapping rules.

[0046] The preset lighting actuator is used to control the lighting inside the vehicle cabin. In common embodiments, ambient lights are installed in multiple locations inside the cabin, and rearview mirror laser lights and rear ambient lights can also be installed outside the vehicle. The preset lighting actuator can activate the ambient lights in the corresponding locations to participate in the linkage according to different scenarios or user commands. For example, when a user only activates the in-car relaxation mode to rest while parked, the in-vehicle system will default to only activating the ambient lights in the cabin ceiling and footwell to participate in the music linkage, without activating the laser lights and rear ambient lights outside the vehicle. This satisfies the audiovisual linkage needs of in-car entertainment without causing visual interference to surrounding vehicles and pedestrians. If the user is holding an outdoor parking party and wants to create an atmosphere with the exterior lighting, they can manually send commands through the in-vehicle interactive interface or mobile APP to simultaneously activate the ambient lights in the cabin, rearview mirror laser lights, and rear ambient lights to participate in the music linkage, forming a comprehensive immersive light and shadow effect. If users only want to display personalized projected logos, they can also separately activate the exterior rearview mirror laser lights, projecting music-integrated light and shadow with custom patterns to meet their needs for taking and sharing photos.

[0047] In the specific feature conversion rules, changes in the low-frequency components can be mapped to instructions controlling the output light color of the preset lighting actuator to gradually change towards a predetermined color system; changes in the mid-frequency components can be mapped to instructions controlling the output light intensity adjustment of the preset lighting actuator; and changes in the high-frequency components can be mapped to instructions controlling the change in the complexity of the projected pattern of the preset lighting actuator. Simultaneously, the beat speed in the rhythm feature can be mapped to instructions controlling the flashing frequency of the light effect of the preset lighting actuator; and the volume amplitude in the amplitude feature can be mapped to instructions controlling the beam projection area or diffusion range of the preset lighting actuator.

[0048] Based on this, the extracted frequency, amplitude, and rhythm features can be used to identify the style category of the music data stream, such as classical, rock, and electronic. According to the identified style category, an optimized feature—lighting mapping rule—corresponding to that style category is selected, thereby making the lighting effects more consistent with the style characteristics of the current music and enhancing its artistic expression.

[0049] After completing feature conversion to obtain lighting parameter instructions, a drive signal is generated based on the lighting parameter instructions and sent to a preset lighting actuator to enable the preset lighting actuator to produce a lighting effect synchronized with the music data stream. In one embodiment, the preset lighting actuator controls a vehicle exterior rearview mirror laser light, which can parse the lighting parameter instructions into signals for controlling the output parameters of the laser diode and signals for controlling the motion mode of the galvanometer system; these signals are sent to the preset lighting actuator to drive the laser diode and the galvanometer system respectively, ultimately outputting a dynamic light and shadow effect.

[0050] To ensure driving safety, the system continuously monitors the vehicle's speed during the generation of the lighting effect by the preset lighting actuator. Based on the speed, it adjusts one or more parameters in the lighting parameter command to reduce the visual intensity of the lighting effect while the vehicle is in motion. This proactively weakens the dynamic lighting effect after the vehicle is unexpectedly started, preventing interference with driving. For example, once the music-linked lighting effect is activated, the system does not stop monitoring the vehicle's status and continuously acquires real-time speed data from the vehicle's CAN bus. If the system detects that the vehicle has switched from a stationary state to a moving state (speed greater than 0), it automatically adjusts one or more parameters in the generated lighting parameter command based on the current actual speed—for example, reducing the output brightness of the lights, simplifying the complexity of the projected pattern, and slowing down the frequency of light changes. These adjustments reduce the visual appeal and intensity of the dynamic lighting effect to address scenarios where the user forgets to park or accidentally starts the vehicle after activating the function.

[0051] This application also supports a custom projection function. It receives custom projection pattern data sent by the mobile terminal via a wireless communication link, stores the custom projection pattern data in a local storage device, adjusts the pattern generation part of the feature-light mapping rule based on the custom projection pattern data, and controls the preset light actuator to project a light effect containing the custom projection pattern based on the adjusted feature-light mapping rule when generating the light parameter command. Specifically, when a user wants to use their own designed pattern, such as a personal logo, anniversary pattern, or slogan, they can wirelessly transmit the custom pattern data to the vehicle control system via a connected mobile terminal. After receiving the pattern data, the vehicle saves it in its local storage device, allowing for direct retrieval each time without repeated transmission. Then, the system modifies the original preset feature-light mapping rule, specifically adjusting the part responsible for generating the projection pattern to integrate the user's custom pattern into the rule. Finally, when generating the light control command, the system outputs the command according to the modified rule, ultimately controlling the light actuator to project a light effect with the user's custom pattern that dynamically changes with the music.

[0052] The beneficial effects of this application are as follows: By acquiring music data streams in preset scenarios, the music-linked lighting function can be enabled only in legal and compliant safe scenarios. Through real-time acquisition and processing of the playing music data stream, the three core features of the music—frequency, amplitude, and rhythm—are extracted and independently mapped to different lighting control parameters. This allows for the creation of layered, dynamic lighting effects that match the musical atmosphere, overcoming the limitation of traditional in-vehicle ambient lighting which only supports static preset modes and cannot dynamically change with the music content. This achieves dynamic lighting effects synchronized with entertainment content in specific scenarios, enhancing the user experience. This solution only requires adding music feature processing and mapping control logic to the existing cabin lighting system to upgrade the functionality, without requiring large-scale modifications to the original hardware structure. It is compatible with the intelligent lighting systems of newly manufactured vehicles and can also be adapted to some already sold models through later software upgrades, demonstrating excellent compatibility.

[0053] In one embodiment, step S101 above can be implemented as steps A1-A2 as follows: In step A1, a wireless communication link is established with the authorized mobile terminal; In step A2, the music data stream from the mobile terminal is received via the wireless communication link.

[0054] In one embodiment, the method may also be implemented as follows: steps A11-A12: In step A11, when establishing the wireless communication link, encryption authentication is performed on the mobile terminal; In step A12, after establishing the wireless communication link, it is determined whether the vehicle is stationary; wherein, the receipt of the music data stream from the mobile terminal is performed after confirming that the encryption authentication is successful and the vehicle is stationary.

[0055] In one embodiment, step S102 above can be implemented as steps B1-B2 as follows: In step B1, analog-to-digital conversion and spectrum analysis are performed on the music data stream; In step B2, based on the spectrum analysis results, the low-frequency components, mid-frequency components, and high-frequency components in the music data stream are calculated and distinguished as the frequency features.

[0056] In one embodiment, step S103 can be implemented as steps C1-C3, including: In step C1, the change of the low-frequency component is mapped to an instruction to control the preset lighting actuator to output light color gradually changing towards a predetermined color system; In step C2, the change in the intermediate frequency component is mapped to a command to control the preset lighting actuator to output light intensity adjustment; In step C3, the changes in the high-frequency components are mapped to instructions that control the changes in the complexity of the projection pattern of the preset lighting actuator.

[0057] In one embodiment, step S103 above can also be implemented as steps D1-D2 as follows: In step D1, the beat speed in the rhythm feature is mapped to an instruction that controls the flashing frequency of the preset light actuator. In step D2, the volume amplitude value in the amplitude feature is mapped to an instruction that controls the beam projection area or diffusion range of the preset lighting actuator.

[0058] In one embodiment, step S104 above can also be implemented as steps E1-E2: In step E1, the light parameter command is parsed into signals for controlling the output parameters of the laser diode and signals for controlling the motion mode of the galvanometer system; In step E2, the signal is sent to the preset lighting actuator to drive the laser diode and the galvanometer system respectively.

[0059] In one embodiment, the method may also be implemented as steps F1-F2: In step F1, during the process of the preset lighting actuator producing the lighting effect, the vehicle's speed is continuously monitored; In step F2, one or more parameter values ​​in the lighting parameter command are adjusted according to the driving speed to reduce the visual intensity of the lighting effect while driving.

[0060] In one embodiment, after step S102 above, the method may also be implemented as steps G1-G2: In step G1, the style category of the music data stream is identified based on the extracted frequency features, amplitude features, and rhythm features; In step G2, based on the identified style category, an optimized feature-lighting mapping rule corresponding to the style category is selected.

[0061] In one embodiment, step S101 above can also be implemented as steps H1-H2: In step H1, while the vehicle is stationary, a command to activate the music and lighting linkage is received through the in-vehicle user interface. In step H2, in response to the instruction, the music signal detection channel is activated to obtain the music data stream being played from the vehicle audio bus.

[0062] In one embodiment, the method may also be implemented as steps I1-I3: In step I1, custom projection pattern data sent by the mobile terminal through a wireless communication link is received; In step I2, the custom projection pattern data is stored in a local storage device, and the pattern generation part in the feature-light mapping rule is adjusted according to the custom projection pattern data; In step I3, when generating the light parameter instructions, the preset light actuator is controlled to project a light effect containing the custom projection pattern based on the adjusted feature-light mapping rules.

[0063] In one specific embodiment, it is a music-linked lighting control system for controlling the laser lights of the vehicle's exterior rearview mirrors based on a mobile application. The entire system consists of five functional modules, the composition and function of which are as follows: The mobile terminal module consists of a built-in music player and Bluetooth / Wi-Fi transmission unit, primarily used to provide music data sources for the system and establish a wireless data transmission channel with the vehicle system. The vehicle central control module consists of a communication processor and a protocol converter, used to achieve protocol adaptation and data exchange between the mobile phone and the vehicle network, ensuring stable transmission of music data between the mobile phone and the vehicle system. The music feature extraction module consists of a DSP processor, an FFT analysis unit, and a feature classifier, responsible for processing the received music signal, extracting three core features—frequency, amplitude, and rhythm—and classifying them. The lighting control module consists of a microcontroller, a mode selector, and an effect generator, used to generate corresponding lighting mode control signals based on the extracted music features. The laser light execution module is integrated into the vehicle's exterior rearview mirror, consisting of a laser diode, a galvanometer system, and an optical lens, used to receive control signals and execute corresponding laser projection effects.

[0064] In this embodiment, the pre-defined music features and light mapping relationship are as follows: In the frequency features, the bass component (20-250Hz) controls color changes, driving the laser light to produce a reddish-to-dark gradient effect; the mid-range component (250-2000Hz) controls brightness adjustment, producing a bright-dark pulse effect; and the treble component (2000-20000Hz) controls pattern complexity, generating complex geometric patterns. The amplitude feature extracts volume parameters, ranging from 0-100dB, which controls the laser light's projection area, adjusting the beam's diffusion range according to volume changes. The rhythm feature extracts BPM parameters, ranging from 60-180, which controls the light flashing frequency, achieving a flashing effect synchronized with the music beat; simultaneously, it extracts beat type parameters, controlling the mirror's trajectory to generate linear, curved, or geometric motion effects.

[0065] The specific execution flow of this embodiment is as follows: The first step is to complete the encrypted mobile phone authentication. The user's authorized mobile phone establishes a wireless connection with the vehicle via Bluetooth. During the connection establishment process, the vehicle system performs encrypted identity authentication on the mobile phone to confirm that the mobile phone is an authorized device that has been bound to the vehicle. After successful authentication, the connection is established.

[0066] The second step is to activate the laser light music control mode. Users access the dedicated app for their vehicle on their mobile phones, tap to enable the in-vehicle laser light music control function. This request is sent to the vehicle's encryption system and granted. Simultaneously, the in-vehicle system automatically detects the vehicle's status, confirming that the vehicle is stationary. Once the usage conditions are met, the function is officially activated, preventing the dynamic laser lights from interfering with the vision of other vehicles when the vehicle is in motion, and also complying with automotive lighting regulations.

[0067] The third step is to set the laser light music control mode. Users can select music stored locally on their mobile phone as the source of the music, and check the option to make the laser light follow the music's characteristics. This ensures that when the music amplitude changes, the laser light's projected area changes accordingly; and when the music frequency changes, the laser light's color changes accordingly.

[0068] The fourth step is to transmit and analyze the music signal. In this embodiment, the laser lights are controlled by the vehicle domain controller. The signal output chain of the entire function is as follows: the mobile APP plays music → the music signal is sent to the in-vehicle entertainment module via wireless transmission → the in-vehicle entertainment module forwards the signal to the vehicle domain controller → the vehicle domain controller analyzes the music signal and extracts the corresponding amplitude and frequency parameters.

[0069] The fifth step is to output the synchronized lighting effects. The vehicle domain controller converts the obtained amplitude and frequency parameters into brightness and color control commands for the laser lights based on a preset mapping relationship. The control signals are then sent to the laser light execution module through the output port. This module controls the laser diodes to adjust the brightness and the galvanometer system to adjust the color and pattern. Ultimately, the laser lights output a dynamic projection lighting effect that changes in sync with the currently playing music. The low frequencies produce a gradual change in red tones, the mid-range frequencies produce changes in brightness and darkness, and the high frequencies produce complex geometric patterns. The faster the beat, the higher the flashing frequency, and the louder the volume, the wider the beam spread, creating a dynamic light and shadow effect that matches the music's atmosphere.

[0070] Thus, this embodiment constructs a complete method chain from mobile phone music acquisition and real-time feature analysis to multi-dimensional control of laser lights, achieving deep, safe, and personalized linkage between music and vehicle exterior lights, significantly enhancing the vehicle's technological feel, fun, and emotional connection with users.

[0071] The core benefits of this solution are mainly reflected in the following aspects: First, by processing music signals in real time and extracting multi-dimensional features, the frequency, amplitude, and rhythm of the music can be mapped to light color, brightness, projection area, and dynamic effects, breaking through the limitations of traditional static lighting and achieving deep dynamic synchronization between music elements and lights, thereby significantly improving the immersive user experience. Second, through preset usage scenario judgment, mobile device encryption authentication, and real-time monitoring and dynamic intervention of vehicle driving status, it ensures that the system operates at full capacity only under safe and compliant conditions or adopts a soft mode while driving, effectively balancing entertainment and driving safety, and meeting automotive regulations. Third, the system supports user-defined patterns and mapping rules, and can be integrated into the existing in-vehicle network simply by adding processing logic through software upgrades, possessing excellent personalization capabilities, deployment flexibility, and economy. Finally, it supports multiple audio sources and has multiple linkage modes, allowing for flexible selection and combination of different light execution components according to different usage scenarios, thus widely adapting to users' diverse entertainment and display needs.

[0072] Figure 2 This is a schematic diagram of the structure of a vehicle lighting control device according to one embodiment of this application, as shown below. Figure 2 As shown, the device includes: Module 201 is used to acquire the music data stream that is currently playing. Extraction module 202 is used to process the music data stream in real time to extract frequency features, amplitude features and rhythm features. The conversion module 203 is used to convert the extracted frequency features, amplitude features and rhythm features into lighting parameter commands for controlling the preset lighting actuators according to the predefined feature-light mapping rules. The generation module 204 is used to generate a drive signal based on the light parameter instructions and send it to a preset light actuator so that the preset light actuator produces a light effect synchronized with the music data stream.

[0073] In one embodiment, the acquisition module includes: Establish a submodule for establishing a wireless communication link with an authorized mobile terminal; A receiving submodule is used to receive the music data stream from the mobile terminal via the wireless communication link.

[0074] In one embodiment, the acquisition module further includes: The authentication submodule is used to perform encrypted authentication on the mobile terminal when establishing the wireless communication link; The determination submodule is used to determine whether the vehicle is stationary after the wireless communication link is established; wherein, the execution of receiving the music data stream from the mobile terminal is performed after confirming that the encryption authentication is successful and the vehicle is stationary.

[0075] In one embodiment, the extraction module includes: The conversion submodule is used to perform analog-to-digital conversion and spectrum analysis on the music data stream; The calculation submodule is used to calculate and distinguish the low-frequency components, mid-frequency components and high-frequency components in the music data stream based on the spectrum analysis results, as the frequency features.

[0076] In one embodiment, the conversion module includes: The first mapping submodule is used to map the changes in the low-frequency components into instructions to control the preset lighting actuator to output light color gradually changing towards a predetermined color system. The second mapping submodule is used to map the changes in the intermediate frequency component into instructions for controlling the preset lighting actuator to output light intensity adjustment. The third mapping submodule is used to map the changes in the high-frequency components into instructions that control the changes in the complexity of the projection pattern of the preset lighting actuator.

[0077] In one embodiment, the conversion module further includes: The fourth mapping submodule is used to map the beat speed in the rhythm feature into an instruction to control the flashing frequency of the preset light actuator. The fifth mapping submodule is used to map the volume amplitude value in the amplitude feature into an instruction to control the beam projection area or diffusion range of the preset lighting actuator.

[0078] In one embodiment, the generation module includes: The parsing submodule is used to parse the light parameter instructions into signals for controlling the output parameters of the laser diode and signals for controlling the motion mode of the galvanometer system. The transmitting submodule is used to send the signal to the preset lighting actuator to drive the laser diode and the galvanometer system respectively.

[0079] In one embodiment, the apparatus further includes: The monitoring module is used to continuously monitor the vehicle's speed during the process of the preset lighting actuator producing the lighting effect; The adjustment module is used to adjust one or more parameter values ​​in the light parameter command according to the driving speed, so as to reduce the visual intensity of the light effect when driving.

[0080] In one embodiment, the apparatus further includes: The identification module is used to identify the style category of the music data stream based on the extracted frequency features, amplitude features, and rhythm features; The selection module is used to select the optimized feature-light mapping rule corresponding to the identified style category.

[0081] In one embodiment, the acquisition module includes: The first receiving module is used to receive a command to start the music and lighting linkage through the in-vehicle user interface when the vehicle is stationary. A response module is used to respond to the instruction by activating the music signal detection channel to obtain the music data stream being played from the vehicle audio bus.

[0082] In one embodiment, the apparatus further includes: The second receiving module is used to receive custom projection pattern data sent by the mobile terminal through a wireless communication link; The storage module is used to store the custom projection pattern data in a local storage device and adjust the pattern generation part of the feature-light mapping rule according to the custom projection pattern data. The control module is used to control the preset light actuator to project a light effect containing the custom projection pattern based on the adjusted feature-light mapping rules when generating the light parameter instructions.

[0083] Figure 3 This is a schematic diagram of the hardware structure of a vehicle lighting control system according to one embodiment of this application, as shown below. Figure 3 As shown, the vehicle lighting control system includes: At least one processor 320; and, Memory 304 communicatively connected to the at least one processor 320; wherein, The memory 304 stores instructions that can be executed by the at least one processor 320 to implement the vehicle lighting control method described in any of the above embodiments.

[0084] Reference Figure 3 The vehicle lighting control system 300 may include one or more of the following components: a processing component 302, a memory 304, a power supply component 306, an input / output (I / O) interface 308, a sensor component 310, and a communication component 312.

[0085] The processing component 302 typically controls the overall operation of the vehicle lighting control system 300. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the method described above. Furthermore, the processing component 302 may include one or more modules to facilitate interaction between the processing component 302 and other components. The processor 320 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0086] Memory 304 is configured to store various types of data to support the operation of the vehicle lighting control system 300. Examples of this data include instructions for any application or method operating on the vehicle lighting control system 300. Memory 304 can be an internal storage unit of the terminal device, such as a hard disk or memory of the terminal device. Memory 304 can also be an external storage device of the terminal device, such as a plug-in hard disk equipped on the terminal device. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. Memory 304 is used to store programs and data required by this application. Memory 304 can also be used to temporarily store data that has been output or will be output.

[0087] The power supply assembly 306 provides power to various components of the vehicle lighting control system 300. The power supply assembly 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the vehicle lighting control system 300.

[0088] I / O interface 308 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc.

[0089] Sensor assembly 310 includes one or more sensors for providing status assessments of various aspects of the vehicle lighting control system 300. Additionally, sensor assembly 310 can detect the on / off state of the vehicle lighting control system 300, the relative positioning of components, and the operational status of the vehicle lighting control system 300 or a component of the vehicle lighting control system 300. In some embodiments, sensor assembly 310 may include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor, etc.

[0090] Communication component 312 is configured to enable vehicle lighting control system 300 to provide wired or wireless communication capabilities with other devices and cloud platforms. Vehicle lighting control system 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 312 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 312 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0091] In an exemplary embodiment, the vehicle lighting control system 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the vehicle lighting control method described in any of the above embodiments.

[0092] This application also provides a computer-readable storage medium, which, when the instructions in the storage medium are executed by a processor corresponding to the vehicle lighting control system, enables the vehicle lighting control system to implement the vehicle lighting control method described in any of the above embodiments.

[0093] This application also provides a vehicle, including: The vehicle lighting control device as described in any of the above embodiments; or the vehicle lighting control system as described in any of the above embodiments.

[0094] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0095] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0096] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0098] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A vehicle lighting control method, characterized in that, include: In a preset scenario, acquire the music data stream that is currently playing; The music data stream is processed in real time to extract frequency features, amplitude features, and rhythm features. According to the predefined feature-lighting mapping rules, the extracted frequency features, amplitude features and rhythm features are respectively converted into lighting parameter commands for controlling the preset lighting actuator, wherein the preset lighting actuator is used to control the lighting in the vehicle cabin at least. Based on the light parameter instructions, a drive signal is generated and sent to a preset light actuator, so that the preset light actuator produces a light effect synchronized with the music data stream.

2. The method according to claim 1, characterized in that, The acquisition of the currently playing music data stream includes: Establish a wireless communication link with an authorized mobile terminal; The music data stream is received from the mobile terminal via the wireless communication link.

3. The method according to claim 2, characterized in that, The method further includes: When establishing the wireless communication link, encryption authentication is performed on the mobile terminal; After establishing the wireless communication link, it is determined whether the vehicle is stationary; wherein, the receipt of the music data stream from the mobile terminal is performed after confirming that the encryption authentication is successful and the vehicle is stationary.

4. The method according to claim 1, characterized in that, The real-time processing of the music data stream includes: Perform analog-to-digital conversion and spectrum analysis on the music data stream; Based on the spectral analysis results, the low-frequency, mid-frequency, and high-frequency components in the music data stream are calculated and distinguished as the frequency features.

5. The method according to claim 4, characterized in that, According to predefined feature-light mapping rules, the extracted frequency features, amplitude features, and rhythm features are respectively converted into light parameter commands for controlling preset light actuators, including: The changes in the low-frequency components are mapped to instructions for controlling the preset lighting actuator to output light colors that gradually change towards a predetermined color system. The changes in the intermediate frequency component are mapped to commands that control the preset lighting actuator to output light intensity adjustment. The changes in the high-frequency components are mapped to instructions that control the changes in the complexity of the projection pattern of the preset lighting actuator.

6. The method according to claim 1, characterized in that, According to predefined feature-light mapping rules, the extracted frequency features, amplitude features, and rhythm features are converted into light parameter commands for controlling preset light actuators, and the method further includes: The beat speed in the rhythmic features is mapped to an instruction that controls the flashing frequency of the preset lighting actuator. The volume amplitude value in the amplitude feature is mapped to an instruction that controls the beam projection area or diffusion range of the preset lighting actuator.

7. The method according to claim 1, characterized in that, The step of generating a drive signal based on the light parameter command and sending it to a preset light actuator includes: The lighting parameter commands are parsed into signals for controlling the output parameters of the laser diode and signals for controlling the motion mode of the galvanometer system. The signal is sent to the preset lighting actuator to drive the laser diode and the galvanometer system respectively.

8. The method according to claim 1, characterized in that, The method further includes: During the process of the preset lighting actuator producing the lighting effect, the vehicle's speed is continuously monitored; Based on the driving speed, adjust one or more parameter values ​​in the lighting parameter command to reduce the visual intensity of the lighting effect while driving.

9. The method according to claim 1, characterized in that, After real-time processing of the music data stream, the process further includes: Based on the extracted frequency features, amplitude features, and rhythm features, the style category of the music data stream is identified; Based on the identified style category, select the optimized feature-light mapping rule corresponding to the style category.

10. The method according to claim 1, characterized in that, The acquisition of the currently playing music data stream includes: When the vehicle is stationary, a command to activate the music and lighting linkage is received through the in-vehicle user interface; In response to the instruction, the music signal detection channel is activated to obtain the music data stream being played from the vehicle audio bus.

11. The method according to claim 1, characterized in that, The method further includes: Receive custom projection pattern data sent by the mobile terminal via a wireless communication link; The custom projection pattern data is stored in a local storage device, and the pattern generation part in the feature-light mapping rule is adjusted according to the custom projection pattern data. When generating the light parameter instructions, the preset light actuator is controlled to project a light effect containing the custom projection pattern based on the adjusted feature-light mapping rules.

12. A vehicle lighting control device, characterized in that, include: The acquisition module is used to acquire the music data stream that is currently playing under preset scenarios; The extraction module is used to process the music data stream in real time to extract frequency features, amplitude features, and rhythm features. The conversion module is used to convert the extracted frequency features, amplitude features and rhythm features into lighting parameter commands for controlling a preset lighting actuator according to a predefined feature-lighting mapping rule, wherein the preset lighting actuator is used to control the lighting in the vehicle cabin at least. The generation module is used to generate a drive signal based on the light parameter instructions and send it to a preset light actuator so that the preset light actuator produces a light effect synchronized with the music data stream.

13. A vehicle lighting control system, characterized in that, include: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor to implement the vehicle lighting control method as described in any one of claims 1-11.

14. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor corresponding to the vehicle lighting control system, the vehicle lighting control system is able to implement the vehicle lighting control method as described in any one of claims 1-11.

15. A vehicle, characterized in that, include: The vehicle lighting control device as described in claim 12; or The vehicle lighting control system as described in claim 13.

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