Acousto-optic synchronous starry sky roof system

Abstract

The utility model provides an acousto-optic synchronous starry sky roof system which comprises a starry sky roof display module which is installed on the top of an automobile compartment and used for displaying starry sky roof patterns; the control host is mounted in the automobile compartment and electrically connected with the starry sky roof display module; the sound module is electrically connected with the control host; the control host comprises an A2B receiving module which receives a multimedia signal through an A2B bus and outputs an A2B signal; the DSP audio processing module is connected with the A2B receiving module and the sound module and is used for receiving and processing the A2B signal; and the MCU is connected with the DSP audio processing module and the starry sky top display module. The DSP audio processing module processes the audio signals transmitted by the A2B receiving module, obtains the rhythm of the audio signals and controls the LED lamps on the starry sky top to be turned on and turned off row by row according to the rhythm change, meanwhile, the DSP audio processing module sends processed audios to the power amplification module, and then the power amplification module drives the sound module to play sound. And acousto-optic synchronization is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automotive interior, especially to a starry sky roof system of sound and light synchronization. BACKGROUND

[0002] With the development of modern automobile technology and the continuous improvement of people's requirements for driving experience, the automobile is no longer just a means of transportation, but a living space integrating entertainment, comfort, personalization and intelligence. Especially in the in-vehicle entertainment system and interior design, people's pursuit of higher level of experience is getting higher and higher, not only functional, but also emotional and immersive driving experience. At the same time, the car audio system, atmosphere lamp and starry sky roof as an important part of the automotive interior are also very important factors in people's driving experience.

[0003] For example, Chinese utility model patent (CN205706519U) discloses an automobile interior starry sky roof, which comprises a roof body, and a decorative cloth covers the surface of the roof body, wherein a plurality of holes are arranged horizontally and vertically on the roof body, LED lamps are arranged in the holes, the decorative cloth is a light-transmitting decorative cloth, the light-transmitting decorative cloth covers the surface of the roof body to hide the holes and the LED lamps, the lead lines of the LED lamps in the holes are led to the side edge of the roof body through the notches formed on the back of the roof body, a starlight display controller arranged in the automobile compartment is connected with the lead lines led to the side edge of the roof body, and the control circuit in the controller outputs different starlight display patterns to drive the LED lamps on the roof body to emit light and form different starlight display patterns.

[0004] But the above-mentioned starry sky roof system works independently and cannot be linked with the audio system in the car cabin entertainment system. The starry sky roof cannot reasonably control the brightness and color according to the rhythm and sound size of the music. The starry sky roof is mostly static and lacks synchronous interaction with other elements such as the audio system. UTILITY MODEL CONTENT

[0005] Based on the defects of the prior art, the utility model provides a starry sky roof system of sound and light synchronization, which comprises:

[0006] The starry sky roof display module is installed on the top of the automobile compartment and is used for displaying the starry sky roof pattern.

[0007] The control host is installed in the interior of the automobile compartment and is electrically connected with the starry sky roof display module.

[0008] The audio module is electrically connected with the control host.

[0009] The control host comprises:

[0010] The A2B receiving module receives the multimedia signal through the A2B bus and outputs the A2B signal.

[0011] a DSP audio processing module connected with the A2B receiving module and the sound module, for receiving and processing the A2B signal;

[0012] an MCU connected with the DSP audio processing module and the star-top display module.

[0013] Preferably, the control host comprises a CAN module for receiving the multimedia control signal through the CAN bus and outputting the CAN signal, and the CAN module is electrically connected with the MCU.

[0014] Preferably, the control host comprises a power amplification module connected with the sound module and the DSP audio processing module, for amplifying the audio signal from the DSP audio processing module and outputting to the sound module.

[0015] Preferably, the control host comprises a PWM control module connected with the MCU and the star-top display module, for receiving the light control signal output by the MCU to drive the star-top display module to display.

[0016] Preferably, the MCU comprises a CAN signal processing module for transmitting and receiving the CAN signal and generating the audio control signal, and the audio control signal is used to control the processing of the audio signal by the DSP audio processing module.

[0017] Preferably, the CAN signal comprises a vehicle speed signal, and the DSP audio processing module processes the audio signal according to the vehicle speed signal.

[0018] Preferably, the MCU comprises a light control module for generating the light control signal according to the audio signal transmitted by the DSP audio processing module.

[0019] Preferably, the sound module comprises a plurality of loudspeakers.

[0020] Preferably, the audio signal output by the DSP audio processing module at least comprises multimedia audio, navigation audio, and alarm audio, which are respectively output through different loudspeakers.

[0021] Preferably, the star-top display module comprises a plurality of RGB Led lights.

[0022] Beneficial effects:

[0023] The technical scheme of the utility model discloses a DSP audio processing module to the audio signal of A2B receiving module transmission is handled, obtains the rhythm of audio signal, according to rhythm change control starry night top LED lamp's each row bright and extinguish, according to certain time interval, order and rhythm, make light like running water from one side flow to the other side.Simultaneously, the digital audio of DSP audio processing module will be sent to power amplifier module, then by power amplifier module drive sound module to play sound, complete starry night top's display while, realize sound and light synchronization.

[0024] The control of starry night top and sound module is controlled by control host, compared with the two separate controller modules of power amplifier and starry night top in prior art, the electronic control module of starry night top system is reduced, the number of vehicle controller is reduced and cost is saved.Moreover, the adaptability is stronger, only need to provide sound source to realize sound and light synchronization, can be installed in the cabin system of not supporting starry night top. BRIEF DESCRIPTION OF DRAWINGS

[0025] The following drawings only illustrate and explain the utility model, and do not limit the range of the utility model.

[0026] Figure 1 It is the overall schematic view of an embodiment of the utility model.

[0027] Figure 2 It is the structural schematic view of the starry night top display module of an embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to have more clear understanding of the technical features, purposes and effects of the present text, the specific implementation mode of the utility model is explained by comparing the drawings, and the same mark in each drawing represents the same part.In order to make the drawing simple, the relevant part of the utility model is schematically shown in each drawing, and does not represent the actual structure of the product.In addition, in order to make the drawing simple and convenient to understand, in some drawings, only one of the components with the same structure or function is schematically shown, or only one of them is marked.

[0029] In the utility model, "connection" can include direct connection, indirect connection, communication connection and electric connection, except for special explanation.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated list items.

[0031] The utility model provides a sound light synchronization's starry sky roof system, as shown in Figure 1 The utility model discloses a starry sky roof display module, control host computer, sound module, wherein, as shown in Figure 2 The utility model discloses a starry sky roof display module, control host computer, sound module, wherein, as shown in The utility model discloses a starry sky roof display module, control host computer, sound module, wherein, as shown in

[0032] The utility model discloses a starry sky roof display module, control host computer, sound module, wherein, as shown in The utility model discloses a starry sky roof display module, control host computer, sound module, wherein, as shown in

[0033] The control host is installed in the car cabin, and in the embodiment, the control host is installed in the car center console and is electrically connected with the car center console and is controlled by the car center console. The control host includes an A2B receiving module, a DSP audio processing module, an MCU, a CAN module, a power amplification module, and a PWM control module. The A2B (Automotive Audio Bus) is a vehicle audio bus, which is used to connect audio devices in a vehicle. The PWM (Pulse Width Modulation) is a light control module, which is a device controlled by a simple grouping device, and is mainly used to adjust the brightness of LED lighting. The CAN (Controller Area Network) is a controller area network bus, which is a serial communication protocol bus for real-time applications and is used for communication between various elements in a car. The DSP (Digital Signal Processor) audio processing module is a kind of audio processor specially used for processing digital signals, which can accept external sound signals, output audio signals after internal processing, and is used to drive a loudspeaker or a headset. The power amplification module (POWER IC) is mainly used to amplify the power of the input signal to achieve higher output power. The MCU (Microcontroller Unit) is also called a single chip microcomputer (Single Chip Microcomputer) or a single chip microcomputer (Single Chip Microcomputer), which is a chip-level computer that integrates the frequency and specifications of a central processing unit (CPU) with memory, counters, USB, A / D conversion, UART, PLC, DMA, and part or all of the peripheral interfaces on a single chip.

[0034] The A2B receiving module is electrically connected with the DSP audio processing module, receives multimedia signals output by the center console through the A2B bus, and transmits the A2B signals to the DSP audio processing module after conversion. After receiving the A2B audio signal, the DSP audio processing module divides it into different channel audio signals, including at least multimedia audio, navigation audio, and alarm audio, and distributes different channel audio signals to different speakers according to scene requirements and controls the volume size, sends it to the power amplification module for amplification, and provides it to the speaker for playing after amplification.

[0035] The CAN module receives multimedia control signals of the central control host through the CAN bus and outputs CAN signals, the MCU includes a CAN signal processing module for receiving and transmitting CAN signals and generating audio control signals for controlling the DSP audio processing module to process audio signals. The CAN module is connected with the CAN signal processing module, and the CAN module receives control messages of the multimedia player sent by the central control host through the CAN bus, including volume, sound effect and other control information, and transmits the control information to the CAN signal processing module of the MCU. The CAN signal processing module processes the control information, confirms the instructions corresponding to the central control host, and then sends the audio control instructions to the DSP audio processing module, and the DSP audio processing module controls the audio played by the loudspeaker according to the audio control instructions.

[0036] The DSP audio processing module also analyzes the A2B audio signal to obtain the rhythm of the audio signal, controls the flashing mode or brightness change of the LED light according to the rhythm change, controls the on and off of the LED light 1 in the starry sky top display module one by one, and makes the light flow from one side to the other side like a flowing river at a certain time interval, order and rhythm. The method for obtaining the rhythm of the audio signal can adopt the beat detection algorithm in the prior art or obtain the change rate (instantaneous change) of the audio signal, and the beat detection algorithm is adopted in the embodiment. The DSP audio processing module identifies the low-frequency rhythm (such as drum beat or strong beat) of the audio by using the beat detection algorithm. When a beat is detected every preset interval time (such as 20 ms), the LED light will have a mutation (such as flashing or brightness change), and the periodicity is identified by using an autocorrelation function (ACF). The autocorrelation function is

[0037] The MCU also includes a light control module, and the DSP audio processing module sends the obtained audio feature information including the rhythm and DB (decibel value, which is a measurement unit for measuring the ratio of two quantities of the same unit, used to measure the intensity of sound) to the light control module. The light control module sends a light control signal to the PWM control module through the LIN bus according to the audio feature information, and the PWM control module drives the RGB LED light 1 in the starry sky top display module according to the light control signal, so as to realize the synchronization of the audio played by the loudspeaker and the light of the starry sky top display, and the light following is more accurate.

[0038] The starry sky top display module LED lamp 1 displays a process. For example, after the starry sky top display module is powered on, the LED lamp 1 defaults to white color, and the brightness is all consistent. The DSP audio processing module detects the beat rhythm of the first moment of the audio signal, and the starry sky top display module first row of LED lamp 1 displays the corresponding brightness. The beat rhythm of the second moment is detected, and the corresponding brightness displayed by the starry sky top display module first row of LED lamp 1 will be displayed in the second row. The starry sky top display module first row of LED lamp 1 will display the corresponding brightness of the beat rhythm of the second moment. In this way, the beat of the music can be combined with the starry sky top water effect.

[0039] The starry sky top display module can also change the color. The audio processed by the DSP audio processing module contains frequency information. The audio frequency is divided, and the light color generated by the audio information corresponding to different preset frequency bands is different. In the embodiment, the light color corresponding to the frequency in the first frequency band is red, the light color corresponding to the frequency in the second frequency band is green, and the light color corresponding to the frequency in the third frequency band is blue. Preferably, the first frequency band is 1-200hz, the second frequency band is 200-2000hz, and the third frequency band is 2000hz-20000hz.

[0040] The three PWM pins of the RGB LED lamp 1 of the starry sky top display module control the brightness of the three colors respectively, which are divided by 0-100% respectively, with a unit of 0.5%. The red color is mapped by the DB value of the 1-200hz frequency band of the audio signal and the red color by 0-100%. The green color is mapped by the DB value of the 200-2khz frequency band and the green color by 0-100%. The blue color is mapped by the DB value of the 2khz-20khz frequency band and the blue color by 0-100%. The DSP audio processing module obtains the DB value of each frequency band of the audio signal and sends it to the light control module. The light control module further adjusts the proportion of red, green and blue to complete the control of the color.

[0041] The CAN module also receives the vehicle speed signal sent by the automobile central control host. The CAN module converts and sends it to the MCU. The MCU generates control information according to the vehicle speed signal and sends it to the DSP audio processing module. The DSP audio processing module adjusts the volume according to the vehicle speed when processing the audio source, and sends the light control signal to the light control module according to the vehicle speed information, so that the LED lamp 1 in the starry sky top display module will also change according to the change of the vehicle speed.

[0042] When the starry sky top display module does not meet the lighting condition, the MCU judges that the lighting lamp event does not occur for a continuous preset time, and then the light control module generates a light control signal to drive the PWM control module to drive the RGB LED lamp 1 to be extinguished row by row according to the preset frequency. In the embodiment, one row of LED lamp 1 is extinguished every 20ms to prevent flickering from causing glare.

[0043] The above only is the preferred embodiment of the utility model, the utility model is not limited to the above examples. The person skilled in the art can clearly that the form in the example is not limited to this, simultaneously adjustable mode is also not limited to this. It can be understood that other improvements and changes directly derived or thought of by the person skilled in the art without departing from the basic concept of the utility model should be considered to be included in the protection scope of the utility model.

Claims

1. An acousto-optically synchronized star ceiling system, characterized by The application relates to a starry sky roof display module, a control host, and an audio module. The control host includes: A2B receiving module, which receives multimedia signals through an A2B bus and outputs A2B signals; DSP audio processing module, which is connected with the A2B receiving module and the audio module and is used for receiving and processing the A2B signals; MCU, which is connected with the DSP audio processing module and the starry sky roof display module. The control host includes a CAN module, which is used for receiving multimedia control signals through a CAN bus and outputting CAN signals, and the CAN module is electrically connected with the MCU. The control host includes a power amplification module, which is connected with the audio module and the DSP audio processing module and is used for amplifying audio signals from the DSP audio processing module and outputting the audio signals to the audio module. The control host includes a PWM control module, which is connected with the MCU and the starry sky roof display module and is used for receiving light control signals output by the MCU to drive the starry sky roof display module to display.

2. A photo-acoustic synchronized star ceiling system as claimed in claim 1, characterized in that, The MCU includes a CAN signal processing module, which is used for receiving and transmitting CAN signals and generating audio control signals, and the audio control signals are used for controlling the processing of the audio signals by the DSP audio processing module.

3. A photo-synchronous star ceiling system as claimed in claim 1, wherein, The CAN signals include vehicle speed signals, and the DSP audio processing module processes the audio signals according to the vehicle speed signals.

4. A photo-synchronous star ceiling system as claimed in claim 1, wherein, The MCU includes a light control module, which generates light control signals according to the audio signals transmitted by the DSP audio processing module.

5. A photo-synchronous star ceiling system as claimed in claim 1, wherein, The audio module includes a plurality of loudspeakers.

6. A photo-synchronous star ceiling system as claimed in claim 5, wherein, The audio signals output by the DSP audio processing module at least include multimedia audio, navigation audio and alarm audio, which are respectively output through different loudspeakers.

7. A photo-synchronous star ceiling system as claimed in claim 1, wherein, The starry sky roof display module includes a plurality of RGB Led lamps.

8. The photo-synchronous star ceiling system of claim 1, wherein, ​ 9. A photo-synchronous star ceiling system as claimed in claim 8, wherein, ​ 10. The photo-synchronous star ceiling system of claim 1, wherein, ​

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