Motorcycle instrument module supporting tuning function
By designing a motorcycle instrument module that supports tuning functions, including a main control module, memory module, radio module and audio processor module, the audio signal parameters are automatically adjusted, solving the problem of inconsistent sound from speakers of different models, achieving uniform and clear sound effects from the speakers, and improving the user experience.
Patent Information
- Application Number
- CN202422892226.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The differences in speaker models, quantity and power of different car models result in inconsistent sound effects and even distortion. Existing technology makes it difficult to achieve automatic tuning to ensure consistency in sound effects.
A motorcycle instrument module is designed, which includes a main control module, a memory module, a radio module and an audio processor module. The audio processor module automatically adjusts the equalization curve and signal amplitude of the audio signal to ensure that the sound effect output by the speaker is within the corresponding range, thus realizing the automatic tuning function.
The speaker outputs uniform and clear sound, which improves the user's listening experience. It has a simple structure, low cost and is easy to promote.
Smart Images
Figure CN223384601U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric vehicle instrument equipment, in particular to a motorcycle instrument module supporting a tuning function. Background Art
[0002] With the increasing number of cars, traffic congestion has brought a lot of inconvenience to people's daily travel. Therefore, electric vehicles and motorcycles are popular among people for their convenience, making two-wheeled electric vehicles one of the common means of transportation for people.
[0003] Two-wheeled vehicles such as electric vehicles and motorcycles are usually equipped with multiple speakers, which are mainly used to emit warning sounds to alert surrounding vehicles and pedestrians to the presence of the vehicle and avoid collision accidents. Or, in an emergency, the speakers can also be used to send emergency signals to attract the attention of others and help the driver get help in time.
[0004] For different car models, the models, quantity and power of the installed speakers are different, and the speaker cavity of each speaker is different. When the dashboard is configured on electric vehicles of different models, different speakers are driven to work, the sound effects produced are not the same, and even distortion may occur. Utility Model Content
[0005] In view of this, it is necessary to provide a motorcycle instrument module that can realize the automatic tuning function and has a simple structure and supports the tuning function.
[0006] A motorcycle instrument module supporting a tuning function comprises a main control module and a memory module, a radio module, and an audio processor module connected to the main control module. The memory module is used to store data and parameters required for system operation. The output end of the radio module is connected to the audio processor module to transmit received FM / AM radio audio signals to the audio processor module. A serial interface is provided between the audio processor module and the main control module for transmitting data and control information between the audio processor module and the main control module. The audio processor module includes an audio interface device connected to a speaker to provide a sound source for the vehicle.
[0007] Preferably, the memory module includes an LPDDR4X random access memory chip and an EMMC flash memory chip, the LPDDR4X random access memory chip and the EMMC flash memory chip respectively have a data bus, an address bus and a read-write control bus, the data bus, the address bus and the read-write control bus are all connected to the main control module, and the LPDDR4X random access memory chip and the EMMC flash memory chip are used to store various parameters and data of system operation.
[0008] Preferably, the audio processor module includes an audio processing chip U6, and the audio processing chip U6 includes an audio analog signal input terminal and an audio analog signal output terminal;
[0009] The audio analog signal input terminal includes an AINL2 pin, an AINR2 pin, an AINL3 pin, and an AINR3 pin. The AINL2 pin of the audio processing chip U6 is connected to the right channel input terminal of the headphone microphone through a thirty-third capacitor C33 and a sixty-third resistor R63 connected in series. The midpoint between the thirty-third capacitor C33 and the sixty-third resistor R63 is grounded through a thirty-eighth capacitor C38 and a fourth resistor R4 connected in parallel. The AINR2 pin of the audio processing chip U6 is connected to the left channel input terminal of the headphone microphone through a thirty-fourth capacitor C34 and a second resistor R2 connected in series. The midpoint between the thirty-fourth capacitor C34 and the second resistor R2 is grounded through a third capacitor C38 and a fourth resistor R4 connected in parallel. The fifteenth capacitor C35 and the third resistor R3 are grounded; the AINL3 pin of the audio processing chip U6 is connected to the FM right channel input terminal via the one-hundred-third capacitor C103 and the sixty-fifth resistor R65 connected in series, and the midpoint between the one-hundred-third capacitor C103 and the sixty-fifth resistor R65 is grounded via the one-hundred-sixth capacitor C106 and the fortieth resistor R40 connected in parallel; the AINR3 pin of the audio processing chip U6 is connected to the FM left channel input terminal via the one-hundred-fourth capacitor C104 and the fifth resistor R5 connected in series, and the midpoint between the one-hundred-fourth capacitor C104 and the fifth resistor R5 is grounded via the one-hundred-fifth capacitor C105 and the sixth resistor R6 connected in parallel;
[0010] The audio analog signal output end includes an AOUT1L pin, an AOUT1R pin, an AOUT2L pin and an AOUT2R pin. The AOUT1L pin of the audio processing chip U6 is connected to the left channel front speaker amplifier port through the ninety-eighth capacitor C98; the AOUT1R pin of the audio processing chip U6 is connected to the right channel front speaker amplifier port through the ninety-seventh capacitor C97; the AOUT2L pin of the audio processing chip U6 is connected to the left channel rear speaker amplifier port through the one hundredth capacitor C100; the AOUT2R pin of the audio processing chip U6 is connected to the right channel rear speaker amplifier port through the ninety-ninth capacitor C99.
[0011] Preferably, the audio processing chip U6 further includes a first I2C serial data interface;
[0012] The first I2C serial data interface includes a first SDA pin and a first SCL pin. The first SDA pin of the audio processing chip U6 is connected to the second SDA pin of the radio module through the sixty-first resistor R61. The first SCL pin of the audio processing chip U6 is connected to the second SCL pin of the radio module through the twenty-seventh resistor R27 to receive the audio signal transmitted by the radio module.
[0013] Preferably, the XTI pin and the XTO pin of the audio processing chip U6 are connected to a crystal oscillator to provide a clock signal for the audio processing chip U6; the oscillation frequency of the crystal oscillator is synchronized with the clock of the data input by the serial data interface.
[0014] Preferably, the PDN pin of the audio processing chip U6 is connected to the main control module through the 189th resistor R189, and the PDN pin of the audio processing chip U6 is the enable / start pin of the chip; when the power supply is powered on, after the power supply is stable, and after a predetermined period of time, the PDN pin is set to a high level to start the audio processing chip U6.
[0015] Preferably, the audio processor module also includes an audio interface, the input end of the audio interface is connected to the audio analog signal output end, the output end of the audio interface is connected to the vehicle's power amplifier device, and is connected to a speaker or earphone through the power amplifier device to provide a sound source for the vehicle.
[0016] Preferably, the radio module includes a radio receiver chip U29, and the radio receiver chip U29 includes an FM receiving port and an AM receiving port, and the FM receiving port and the AM receiving port are respectively connected to a radio antenna through a filter circuit;
[0017] The FM receiving port includes an FM-IN-M pin and an FM-IN-P pin. The FM-IN-M pin is connected to the radio antenna via a 1352 capacitor C1352, a 427 inductor L427, and a 1301 capacitor C1301 connected in series. A 426 inductor L426 is connected between the FM-IN-P pin and the FM-IN-M pin. Both ends of the 426 inductor L426 are grounded via a 1350 capacitor C1350 and a 1351 capacitor C1351, respectively.
[0018] The AM receiving port includes an AM-IN-P pin and an AM-LNA-CAP pin, wherein the AM-IN-P pin is connected to the radio antenna via a 1354th capacitor C1354, a 432nd inductor L432, a 1355th capacitor C1355 and a 1357th capacitor C1357 connected in series in sequence, a 159th resistor R159 is connected across the two ends of the 432nd inductor L432, a 1356th capacitor C1356 and a 428th inductor L428 are connected in parallel across the two ends of the 1355th capacitor C1355, and a 1357th capacitor C1357 are connected in series in sequence. The two ends of 55 are also connected in series with a 430th inductor L430, a 130th capacitor C130, and a 168th resistor R168. The two ends of the 130th capacitor C130 are connected with a 136th capacitor C136. The connection point between the 168th resistor R168, the 130th capacitor C130, and the 136th capacitor C136 is grounded. The midpoint between the 1357th capacitor C1357 and the radio antenna is grounded via a 174th resistor R174. The AM-LNA-CAP pin is grounded via a 1358th capacitor C1358.
[0019] Preferably, the radio receiver chip U29 further includes an FM signal output terminal and a second I2C serial data interface;
[0020] The FM signal output terminal includes a DAC-R pin and a DAC-L pin, and the DAC-R pin and the DAC-L pin are connected to the AINL3 pin and the AINR3 pin of the audio processing chip U6 through the 101st capacitor C101 and the 102nd capacitor C102 respectively;
[0021] The second I2C serial data interface includes a second SDA pin and a second SCL pin. The second SDA pin of the radio receiver chip U29 is connected to the first SDA pin of the audio processing chip U6 through the 182nd resistor R182. The second SCL pin of the radio receiver chip U29 is connected to the second SCL pin of the audio processing chip U6 through the 183rd resistor R183.
[0022] Preferably, the main control module includes a processor chip, which has an I2C serial data interface for connecting the radio module and the audio processor module; the processor chip also has an EMI interface and an EMMC interface for connecting the LPDDR4X random access memory chip and the EMMC flash memory chip; the processor chip is also connected to a 4G / 5G communication module and a WIFI / BT communication module for connecting to a wireless communication network or wirelessly connecting to an external device to provide a sound source.
[0023] In the aforementioned motorcycle instrument module supporting tuning functions, the broadcast signal received by the radio module, or the audio signal from an external device wirelessly connected via the communication module, is transmitted to the audio processor module, and the audio output parameters of the audio processor module are stored in the memory module. When the instrument module is activated, the audio processor module automatically adjusts parameters such as the audio signal's equalization curve (EQ), the signal amplitude dynamic compression (DRC), and the equal loudness curve based on the audio output parameters to ensure that the sound effect amplitude and EQ curve output by the speaker are within the corresponding range, making the sound emitted by the speaker uniform and clear, and providing the user with a better auditory experience. The utility model has a simple structure, is easy to implement, is low-cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 The utility model is a structural diagram of a motorcycle instrument module supporting a tuning function according to an embodiment of the present invention.
[0025] Figure 2 The present invention is a schematic diagram of the circuit structure of an audio processor module of a motorcycle instrument module supporting a tuning function according to an embodiment of the present invention.
[0026] Figure 3 The utility model is a circuit structure diagram of a radio module of a motorcycle instrument module supporting a tuning function according to an embodiment of the present invention. DETAILED DESCRIPTION
[0027] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0028] See also Figure 1 、 Figure 2 and Figure 3 , showing a motorcycle instrument module 100 supporting a tuning function provided by an embodiment of the present invention, comprising a main control module 10 and a memory module 20, a radio module 30, and an audio processor module 40 connected to the main control module 10. The memory module 20 is used to store data and parameters required for system operation; the output end of the radio module 30 is connected to the audio processor module 40 to transmit the received FM / AM radio audio signal to the audio processor module 40; a serial interface is provided between the audio processor module 40 and the main control module 10 for transmitting data information and control information between the audio processor module 40 and the main control module 10; the audio processor module 40 includes an audio interface device, which is connected to a speaker to provide a sound source for the vehicle.
[0029] Preferably, the memory module 20 includes an LPDDR4X random access memory chip and an EMMC flash memory chip, the LPDDR4X random access memory chip and the EMMC flash memory chip respectively have a data bus, an address bus and a read-write control bus, the data bus, the address bus and the read-write control bus are all connected to the main control module 10, the LPDDR4X random access memory chip and the EMMC flash memory chip are used to store various parameters and data of the system operation.
[0030] Preferably, the audio processor module 40 includes an audio processing chip U6, and the audio processing chip U6 includes an audio analog signal input terminal and an audio analog signal output terminal;
[0031] The audio analog signal input terminal includes an AINL2 pin, an AINR2 pin, an AINL3 pin, and an AINR3 pin. The AINL2 pin of the audio processing chip U6 is connected to the right channel input terminal of the headphone microphone through a thirty-third capacitor C33 and a sixty-third resistor R63 connected in series. The midpoint between the thirty-third capacitor C33 and the sixty-third resistor R63 is grounded through a thirty-eighth capacitor C38 and a fourth resistor R4 connected in parallel. The AINR2 pin of the audio processing chip U6 is connected to the left channel input terminal of the headphone microphone through a thirty-fourth capacitor C34 and a second resistor R2 connected in series. The midpoint between the thirty-fourth capacitor C34 and the second resistor R2 is grounded through a third capacitor C38 and a fourth resistor R4 connected in parallel. The fifteenth capacitor C35 and the third resistor R3 are grounded; the AINL3 pin of the audio processing chip U6 is connected to the FM right channel input terminal via the one-hundred-third capacitor C103 and the sixty-fifth resistor R65 connected in series, and the midpoint between the one-hundred-third capacitor C103 and the sixty-fifth resistor R65 is grounded via the one-hundred-sixth capacitor C106 and the fortieth resistor R40 connected in parallel; the AINR3 pin of the audio processing chip U6 is connected to the FM left channel input terminal via the one-hundred-fourth capacitor C104 and the fifth resistor R5 connected in series, and the midpoint between the one-hundred-fourth capacitor C104 and the fifth resistor R5 is grounded via the one-hundred-fifth capacitor C105 and the sixth resistor R6 connected in parallel;
[0032] The audio analog signal output end includes an AOUT1L pin, an AOUT1R pin, an AOUT2L pin and an AOUT2R pin. The AOUT1L pin of the audio processing chip U6 is connected to the left channel front speaker amplifier port through the ninety-eighth capacitor C98; the AOUT1R pin of the audio processing chip U6 is connected to the right channel front speaker amplifier port through the ninety-seventh capacitor C97; the AOUT2L pin of the audio processing chip U6 is connected to the left channel rear speaker amplifier port through the one hundredth capacitor C100; the AOUT2R pin of the audio processing chip U6 is connected to the right channel rear speaker amplifier port through the ninety-ninth capacitor C99.
[0033] Preferably, the audio processing chip U6 further includes a first I2C serial data interface;
[0034] The first I2C serial data interface includes a first SDA pin and a first SCL pin. The first SDA pin of the audio processing chip U6 is connected to the second SDA pin of the radio module 30 via a sixty-first resistor R61. The first SCL pin of the audio processing chip U6 is connected to the second SCL pin of the radio module 30 via a twenty-seventh resistor R27 to receive the audio signal transmitted by the radio module 30.
[0035] Specifically, in this embodiment, the audio processing chip U6 adopts the AK7604 chip, the SDA / SCL pins are the I2C interface by default, and the AINL pin and the AOUT pin are used for analog input and analog output of audio signals.
[0036] Preferably, the XTI pin and the XTO pin of the audio processing chip U6 are connected to a crystal oscillator to provide a clock signal for the audio processing chip U6; the oscillation frequency of the crystal oscillator is synchronized with the clock of the data input by the serial data interface.
[0037] Specifically, in this embodiment, if a passive crystal oscillator is selected, if the sampling frequency is 48 kHz or a multiple of 48 kHz, the oscillation frequency of the crystal oscillator is 12.288 MHz or 18.432 MHz; if the sampling frequency is 44.1 kHz or a multiple of 44.1 kHz, the oscillation frequency of the crystal oscillator is 11.2896 MHz or 16.9344 MHz. If the audio processing chip U6 is used to operate asynchronously with peripheral devices, the operating frequency of the crystal oscillator is adjusted to 12.288 MHz or 11.2896 MHz.
[0038] Preferably, the PDN pin of the audio processing chip U6 is connected to the main control module 10 through the 189th resistor R189, and the PDN pin of the audio processing chip U6 is the enable / start pin of the chip; when the power supply is powered on, after the power supply is stable, and after a predetermined period of time, the PDN pin is set to a high level to start the audio processing chip U6.
[0039] Preferably, the audio processor module 40 also includes an audio interface, the input end of the audio interface is connected to the audio analog signal output end, the output end of the audio interface is connected to the vehicle's power amplifier device, and is connected to a speaker or earphone through the power amplifier device to provide a sound source for the vehicle.
[0040] Specifically, when a speaker sound problem occurs during the vehicle model matching test, the relevant parameters are adjusted through the PC tuning tool and written into the SOC system software. The next time the system is turned on, the parameters are automatically called so that when the speaker plays music or emits a prompt sound, its audio parameters such as EQ, DRC and amplitude will not exceed the set parameters written into the system, thereby achieving the purpose of automatically adjusting the speaker sound.
[0041] Preferably, the radio module 30 includes a radio receiver chip U29, and the radio receiver chip U29 includes an FM receiving port and an AM receiving port, and the FM receiving port and the AM receiving port are respectively connected to a radio antenna through a filter circuit;
[0042] The FM receiving port includes an FM-IN-M pin and an FM-IN-P pin. The FM-IN-M pin is connected to the radio antenna via a 1352 capacitor C1352, a 427 inductor L427, and a 1301 capacitor C1301 connected in series. A 426 inductor L426 is connected between the FM-IN-P pin and the FM-IN-M pin. Both ends of the 426 inductor L426 are grounded via a 1350 capacitor C1350 and a 1351 capacitor C1351, respectively.
[0043] The AM receiving port includes an AM-IN-P pin and an AM-LNA-CAP pin, wherein the AM-IN-P pin is connected to the radio antenna via a 1354th capacitor C1354, a 432nd inductor L432, a 1355th capacitor C1355 and a 1357th capacitor C1357 connected in series in sequence, a 159th resistor R159 is connected across the two ends of the 432nd inductor L432, a 1356th capacitor C1356 and a 428th inductor L428 are connected in parallel across the two ends of the 1355th capacitor C1355, and a 1357th capacitor C1357 are connected in series in sequence. The two ends of 55 are also connected in series with a 430th inductor L430, a 130th capacitor C130, and a 168th resistor R168. The two ends of the 130th capacitor C130 are connected with a 136th capacitor C136. The connection point between the 168th resistor R168, the 130th capacitor C130, and the 136th capacitor C136 is grounded. The midpoint between the 1357th capacitor C1357 and the radio antenna is grounded via a 174th resistor R174. The AM-LNA-CAP pin is grounded via a 1358th capacitor C1358.
[0044] Specifically, in this embodiment, the wireless radio chip U29 uses a TEF6688 chip for receiving and decoding digital broadcast signals, and has digital tuning, digital demodulation, and digital audio processing functions. The broadcast signal received by the radio antenna is filtered and amplified by a filter circuit before being transmitted to the FM receiving port and the AM receiving port.
[0045] Preferably, the radio receiver chip U29 further includes an FM signal output terminal and a second I2C serial data interface;
[0046] The FM signal output terminal includes a DAC-R pin and a DAC-L pin, and the DAC-R pin and the DAC-L pin are connected to the AINL3 pin and the AINR3 pin of the audio processing chip U6 through the 101st capacitor C101 and the 102nd capacitor C102 respectively;
[0047] The second I2C serial data interface includes a second SDA pin and a second SCL pin. The second SDA pin of the radio receiver chip U29 is connected to the first SDA pin of the audio processing chip U6 through the 182nd resistor R182. The second SCL pin of the radio receiver chip U29 is connected to the second SCL pin of the audio processing chip U6 through the 183rd resistor R183.
[0048] Specifically, the XTAL-IN pin of the radio receiver chip U29 is connected to an external crystal oscillator to provide a clock signal for the radio receiver chip U29. The external crystal oscillator of the radio receiver chip U29 and the crystal oscillator of the audio processing chip U6 provide clock signals for the radio receiver chip U29 and the audio processing chip U6, respectively, so that the serial data interfaces between them and with the main control module 10 can be correctly transmitted and recognized when using the asynchronous data transmission mode.
[0049] Preferably, the main control module 10 includes a processor chip, which has an I2C serial data interface for connecting the radio module 30 and the audio processor module 40; the processor chip also has an EMI interface and an EMMC interface for connecting the LPDDR4X random access memory chip and the EMMC flash memory chip; the processor chip is also connected to a 4G / 5G communication module and a WIFI / BT communication module for connecting to a wireless communication network or wirelessly connecting to an external device to provide a sound source.
[0050] Specifically, it also includes a power management module, a display module, and an image acquisition module. The image acquisition module includes a front camera and a rear camera. The display module is used to display and touch the captured images and device operating parameters to implement various control functions. The power management module is used to provide operating power for the above modules.
[0051] In the aforementioned motorcycle instrument module 100 supporting a tuning function, the broadcast signal received by the radio module 30, or the audio signal from an external device wirelessly connected via the communication module, is transmitted to the audio processor module 40. The audio output parameters of the audio processor module 40 are stored in the memory module 20. When the instrument module is activated, the audio processor module 40 automatically adjusts parameters such as the equalization curve EQ of the audio signal, the dynamic compression DRC of the signal amplitude, and the equal loudness curve based on the audio output parameters to ensure that the sound effect amplitude and EQ curve output by the speaker are within the corresponding range, making the sound emitted by the speaker uniform and clear, and providing the user with a better listening experience. The utility model has a simple structure, is easy to implement, is low-cost, and is easy to promote.
[0052] It should be noted that the present invention is not limited to the above-mentioned embodiments. According to the creative spirit of the present invention, those skilled in the art can also make other changes. These changes made according to the creative spirit of the present invention should be included in the scope of protection required by the present invention.
Claims
1. A motorcycle instrument module supporting tuning function, characterized in that: The system comprises a main control module and a memory module, a radio module and an audio processor module connected to the main control module. The memory module is used to store data and parameters required for system operation. The output end of the radio module is connected to the audio processor module to transmit the received FM / AM radio audio signal to the audio processor module. There is a serial interface between the audio processor module and the main control module for transmitting data information and control information between the audio processor module and the main control module. The audio processor module includes an audio interface device, and the audio interface device is connected to a speaker to provide a sound source for the vehicle.
2. The motorcycle instrument module supporting tuning function according to claim 1, characterized in that: The memory module includes an LPDDR4X random access memory chip and an EMMC flash memory chip. The LPDDR4X random access memory chip and the EMMC flash memory chip respectively have a data bus, an address bus and a read-write control bus. The data bus, the address bus and the read-write control bus are all connected to the main control module. The LPDDR4X random access memory chip and the EMMC flash memory chip are used to store various parameters and data of system operation.
3. The motorcycle instrument module supporting tuning function according to claim 1, characterized in that: The audio processor module includes an audio processing chip U6, and the audio processing chip U6 includes an audio analog signal input terminal and an audio analog signal output terminal; The audio analog signal input terminal includes an AINL2 pin, an AINR2 pin, an AINL3 pin, and an AINR3 pin. The AINL2 pin of the audio processing chip U6 is connected to the right channel input terminal of the headphone microphone through a thirty-third capacitor C33 and a sixty-third resistor R63 connected in series. The midpoint between the thirty-third capacitor C33 and the sixty-third resistor R63 is grounded through a thirty-eighth capacitor C38 and a fourth resistor R4 connected in parallel. The AINR2 pin of the audio processing chip U6 is connected to the left channel input terminal of the headphone microphone through a thirty-fourth capacitor C34 and a second resistor R2 connected in series. The midpoint between the thirty-fourth capacitor C34 and the second resistor R2 is grounded through a third capacitor C38 and a fourth resistor R4 connected in parallel. The fifteenth capacitor C35 and the third resistor R3 are grounded; the AINL3 pin of the audio processing chip U6 is connected to the FM right channel input terminal via the one-hundred-third capacitor C103 and the sixty-fifth resistor R65 connected in series, and the midpoint between the one-hundred-third capacitor C103 and the sixty-fifth resistor R65 is grounded via the one-hundred-sixth capacitor C106 and the fortieth resistor R40 connected in parallel; the AINR3 pin of the audio processing chip U6 is connected to the FM left channel input terminal via the one-hundred-fourth capacitor C104 and the fifth resistor R5 connected in series, and the midpoint between the one-hundred-fourth capacitor C104 and the fifth resistor R5 is grounded via the one-hundred-fifth capacitor C105 and the sixth resistor R6 connected in parallel; The audio analog signal output end includes an AOUT1L pin, an AOUT1R pin, an AOUT2L pin and an AOUT2R pin. The AOUT1L pin of the audio processing chip U6 is connected to the left channel front speaker amplifier port through the ninety-eighth capacitor C98; the AOUT1R pin of the audio processing chip U6 is connected to the right channel front speaker amplifier port through the ninety-seventh capacitor C97; the AOUT2L pin of the audio processing chip U6 is connected to the left channel rear speaker amplifier port through the one hundredth capacitor C100; the AOUT2R pin of the audio processing chip U6 is connected to the right channel rear speaker amplifier port through the ninety-ninth capacitor C99.
4. The motorcycle instrument module supporting tuning function according to claim 3, characterized in that: The audio processing chip U6 also includes a first I2C serial data interface; The first I2C serial data interface includes a first SDA pin and a first SCL pin. The first SDA pin of the audio processing chip U6 is connected to the second SDA pin of the radio module through the sixty-first resistor R61. The first SCL pin of the audio processing chip U6 is connected to the second SCL pin of the radio module through the twenty-seventh resistor R27 to receive the audio signal transmitted by the radio module.
5. The motorcycle instrument module supporting tuning function according to claim 4, characterized in that: The XTI pin and the XTO pin of the audio processing chip U6 are connected to a crystal oscillator to provide a clock signal for the audio processing chip U6; the oscillation frequency of the crystal oscillator is synchronized with the clock of the data input by the serial data interface.
6. The motorcycle instrument module supporting tuning function according to claim 3, characterized in that: The PDN pin of the audio processing chip U6 is connected to the main control module through the 189th resistor R189. The PDN pin of the audio processing chip U6 is the enable / start pin of the chip; when the power supply is powered on, after the power supply is stable, and after a predetermined period of time, the PDN pin is set to a high level to start the audio processing chip U6.
7. The motorcycle instrument module supporting tuning function according to claim 3, characterized in that: The audio processor module also includes an audio interface, the input end of the audio interface is connected to the audio analog signal output end, the output end of the audio interface is connected to the vehicle's power amplifier device, and is connected to the speaker or headphones through the power amplifier device to provide a sound source for the vehicle.
8. The motorcycle instrument module supporting tuning function according to claim 3, characterized in that: The radio module includes a radio receiver chip U29, which includes an FM receiving port and an AM receiving port, and the FM receiving port and the AM receiving port are respectively connected to the radio antenna through a filter circuit; The FM receiving port includes an FM-IN-M pin and an FM-IN-P pin. The FM-IN-M pin is connected to the radio antenna via a 1352 capacitor C1352, a 427 inductor L427, and a 1301 capacitor C1301 connected in series. A 426 inductor L426 is connected between the FM-IN-P pin and the FM-IN-M pin. Both ends of the 426 inductor L426 are grounded via a 1350 capacitor C1350 and a 1351 capacitor C1351, respectively. The AM receiving port includes an AM-IN-P pin and an AM-LNA-CAP pin, wherein the AM-IN-P pin is connected to the radio antenna via a 1354th capacitor C1354, a 432nd inductor L432, a 1355th capacitor C1355 and a 1357th capacitor C1357 connected in series in sequence, a 159th resistor R159 is connected across the two ends of the 432nd inductor L432, a 1356th capacitor C1356 and a 428th inductor L428 are connected in parallel across the two ends of the 1355th capacitor C1355, and a 1357th capacitor C1357 are connected in series in sequence. The two ends of 55 are also connected in series with a 430th inductor L430, a 130th capacitor C130, and a 168th resistor R168. The two ends of the 130th capacitor C130 are connected with a 136th capacitor C136. The connection point between the 168th resistor R168, the 130th capacitor C130, and the 136th capacitor C136 is grounded. The midpoint between the 1357th capacitor C1357 and the radio antenna is grounded via a 174th resistor R174. The AM-LNA-CAP pin is grounded via a 1358th capacitor C1358.
9. The motorcycle instrument module supporting tuning function according to claim 8, characterized in that: The radio receiver chip U29 also includes an FM signal output terminal and a second I2C serial data interface; The FM signal output terminal includes a DAC-R pin and a DAC-L pin, and the DAC-R pin and the DAC-L pin are connected to the AINL3 pin and the AINR3 pin of the audio processing chip U6 through the 101st capacitor C101 and the 102nd capacitor C102 respectively; The second I2C serial data interface includes a second SDA pin and a second SCL pin. The second SDA pin of the radio receiver chip U29 is connected to the first SDA pin of the audio processing chip U6 through the 182nd resistor R182. The second SCL pin of the radio receiver chip U29 is connected to the second SCL pin of the audio processing chip U6 through the 183rd resistor R183.
10. The motorcycle instrument module supporting tuning function according to claim 2, characterized in that: The main control module includes a processor chip, which has an I2C serial data interface for connecting the radio module and the audio processor module; the processor chip also has an EMI interface and an EMMC interface for connecting the LPDDR4X random access memory chip and the EMMC flash memory chip; the processor chip is also connected to a 4G / 5G communication module and a WIFI / BT communication module for connecting to a wireless communication network or wirelessly connecting to an external device to provide a sound source.