Multifunctional communication equipment for motorcycle and working method of equipment

Abstract

The invention discloses multifunctional communication equipment for a motorcycle. The multifunctional communication equipment comprises a shell and a circuit board arranged in the shell, the circuit board comprises a CAN communication assembly, a USB slave assembly, a Bluetooth antenna assembly, a TF storage assembly and a microcontroller, the CAN communication assembly is connected with a motorcycle CAN network, the USB slave assembly is in communication connection with USB host equipment, the TF storage assembly is used for inserting a TF card, and the microcontroller is electrically connected with all the assemblies in the circuit board. The invention further discloses a working method of the multifunctional communication equipment for the motorcycle. According to the invention, one piece of communication equipment is adopted and matched with a mobile phone and a PC (Personal Computer), so that the functional requirements of development, after-sales data monitoring, data storage and fault analysis of electric control products of motorcycles can be met, the cost of the communication equipment is close to that of a USB-CAN (Universal Serial Bus-Controller Area Network) communication module on the market, and great convenience is brought to development, matching and after-sales.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle communication, and particularly relates to a multifunctional communication device for a motorcycle and a working method of the device. Background Art

[0002] In modern motorcycles, whether they are internal combustion engine motorcycles or electric motorcycles, mechatronic products are increasingly applied, such as anti-lock braking system (ABS), electronic fuel injection system (EFI) for fuel motorcycles, and motor controller (MCU) for electric motorcycles. During the development, matching, and after-sales processes of these systems, it is necessary to download control strategy programs through CAN bus communication, receive data streams on-site or remotely for real-time analysis, and store and perform off-line analysis on the data streams. Currently, products that meet the above requirements include: OBD diagnostic instruments, which can receive the data stream of a motorcycle and interpret the fault codes in the data stream; USB-CAN communication modules, which can achieve two-way communication between a motorcycle and a PC computer; CAN-Bluetooth communication modules, which can achieve two-way data communication between a motorcycle and mobile devices such as mobile phones through Bluetooth communication; data recorders, which can record the data stream on the CAN communication bus of a motorcycle in a TF card for off-line data stream analysis.

[0003] Currently, for existing products to achieve all of the above functions, four sets of equipment need to be purchased: an OBD diagnostic instrument, a USB-CAN communication module, a CAN-Bluetooth communication module, and a data recorder. This is not only a huge economic burden for motorcycle developers, after-sales service personnel, and motorcycle users, but also brings many inconveniences in use due to the diversity of the equipment. Summary of the Invention

[0004] The object of the present invention is to propose an integrated communication design, where one device has the functions of four devices currently on the market: an OBD diagnostic instrument, a USB-CAN communication module, a CAN-Bluetooth communication module, and a data recorder, thereby greatly reducing the equipment usage costs of motorcycle developers, after-sales personnel, and users, and bringing great convenience.

[0005] To solve the above technical problems, the technical solution of the present invention is: a multifunctional communication device for a motorcycle, including a housing and a circuit board disposed inside the housing; the circuit board includes: a CAN communication component, a USB slave component, a Bluetooth antenna component, a TF storage component, and a microcontroller. The CAN communication component is connected to the motorcycle CAN network, the USB slave component is communicatively connected to a USB host device, the TF storage component is used for inserting a TF card, and the microcontroller is electrically connected to each component in the circuit board.

[0006] In the above-mentioned multifunctional communication device for motorcycles, the microcontroller is the core of the entire system. The microcontroller uses the CH32V208 chip and has a built-in 2Mbps low-power Bluetooth BLE communication module, a USB2.0 full-speed device interface, a CAN controller, SPI, and SDIO interfaces. The Bluetooth BLE communication module supports protocols of Bluetooth 5.0 and above.

[0007] In the above-mentioned multifunctional communication device for motorcycles, the Bluetooth antenna assembly includes a Bluetooth antenna printed on the circuit board, capacitor C4 (1.8pF), capacitor C5 (1.8pF), and inductor L1 (1.8nH). Capacitor C4 (1.8pF), capacitor C5 (1.8pF), and inductor L1 (1.8nH) together form a π filter circuit.

[0008] In the above-mentioned multifunctional communication device for motorcycles, the FLASH in the microcontroller stores CAN communication protocol, USB communication protocol, Bluetooth communication protocol, and FAT / NTFS file system. The microcontroller acts as a gateway to achieve the coordination of the above communication methods and the conversion between communication protocols.

[0009] In the above-mentioned multifunctional communication device for motorcycles, the CAN communication component includes a communication interface, a CAN transceiver, a common-mode inductor, EMC capacitors, electrostatic discharge protection, and overvoltage protection devices. The communication interface is selected as an OBD-II standard interface for connecting to the vehicle's CAN network. The CAN transceiver is TJA1050, which realizes the conversion between the microcontroller's logic level and the CAN bus differential level. The common-mode inductor is used to suppress common-mode interference and improve electromagnetic compatibility. The common-mode inductor can use ACT45B-510-2P (TDK) with an inductance value of 51μH. The EMC capacitors are used to improve EMC characteristics. There are 2 EMC capacitors, which are respectively connected to CAN-H and ground, CAN-L and ground, with a capacitance value of 47pF and a tolerance of no more than 10%. The electrostatic discharge protection and overvoltage protection devices are used to protect the circuit board from damage caused by electrostatic discharge (ESD) events. The CAN communication component supports CAN2.0A / B and CAN FD standards, and the vehicle power supply can be used to power the multifunctional communication device through the OBD-II standard interface.

[0010] In the above-mentioned multi-functional communication device for motorcycles, the USB slave component is connected to an external USB host device through a Type-C interface. The external USB host device can be a PC computer, a mobile phone, or other electronic terminals that support USB communication methods. The USB slave component supports protocols of USB 2.0 and above, and the external USB host device can be used to supply power to the multi-functional communication device through the Type-C interface.

[0011] In the above-mentioned multi-functional communication device for motorcycles, the TF storage component is connected to a TF card through an SPI or SDIO interface. The TF storage component supports file systems in FAT32 and NTFS formats.

[0012] In the above-mentioned multi-functional communication device for motorcycles, at least one LED indicator is included on the circuit board. The indicator is connected to and controlled by the microcontroller, and is used to indicate the device status, including but not limited to power status, working mode, data transmission status, error status, etc.

[0013] In the above-mentioned multi-functional communication device for motorcycles, the circuit board also includes circuits required for the system to work. The circuits are a power supply circuit (whose function is to convert the +12V voltage introduced from the communication interface into the 3.3V or 5V voltage required by the microcontroller chip on the circuit board through certain electrical components), a crystal oscillator circuit (a crystal oscillator and necessary capacitor components), and a firmware update / debugging (debugging socket, necessary decoupling capacitors) circuit.

[0014] The present invention also provides a working method for a multi-functional communication device for motorcycles, including the above-mentioned multi-functional communication device. The multi-functional communication device can work in a variety of different modes, including: program upgrade mode, data offline real-time storage mode, USB monitoring calibration and diagnosis mode, and Bluetooth data communication mode.

[0015] In the above-mentioned working method of a motorcycle multi-functional communication device, when the multi-functional communication device operates in the program upgrade mode, the microcontroller reads the program file stored in the TF card and downloads it to the designated motorcycle controller through the CAN communication component. The program file includes, but is not limited to, the electronic fuel injection system (EFI) program, the anti-lock braking system (ABS) program, and the motor controller (MCU) program. The program file is an encrypted binary data file and contains verification data. The microcontroller reads the program file and calculates the verification data using the same encryption algorithm as the program file. The legality of the program file is identified by the consistency of the verification data. The program upgrade protocol in the CAN communication protocol can detect data transmission errors and data loss and adopt a data packet retransmission strategy to ensure the integrity of the program data. It supports importing program files to the TF card through the USB slave component and the Bluetooth component.

[0016] In the above-mentioned working method of a motorcycle multi-functional communication device, when the multi-functional communication device operates in the data offline real-time storage mode, the microcontroller reads the motorcycle CAN bus data and stores the read data stream in the TF card in the form of a file. The supported data file types include, but are not limited to, binary files (.DAT), text files (.TXT), Vector software importable files (.ASC), and batch processing files (.CAN). The data stream contains timestamp information. The data files are stored in a specific folder. A new data file is created every 5 minutes. The specific folder is created at the start of each vehicle power-on driving cycle. When the TF card is full, the file with an earlier time is automatically overwritten. The data offline real-time storage mode supports exporting data through the USB slave component and the Bluetooth component for further analysis.

[0017] In the above-mentioned working method of a motorcycle multi-functional communication device, when the multi-functional communication device operates in the USB monitoring, calibration, and diagnosis mode, an external USB host device uses a USB data cable to connect to the Type-C interface of the USB slave component of the multi-functional communication device, enumerates the microcontroller, and then performs bidirectional data exchange with the motorcycle controller through the communication protocol conversion of the microcontroller and the CAN communication component to achieve data monitoring and storage, parameter calibration, and fault diagnosis.

[0018] In the above-mentioned working method of a motorcycle multi-functional communication device, when the multi-functional communication device operates in the Bluetooth data communication mode, an external Bluetooth terminal communicates with the multi-functional communication device through the Bluetooth antenna assembly of the multi-functional communication device, realizing the switching and configuration of the working mode of the multi-functional communication device; the external Bluetooth terminal then conducts two-way data exchange with the motorcycle controller through the CAN communication component of the multi-functional communication device, realizing data monitoring and storage, parameter calibration, and fault diagnosis of the motorcycle controller; through the multi-functional communication device and an external Bluetooth terminal with networking function, a remote diagnosis function can also be realized.

[0019] In the above-mentioned working method of a motorcycle multi-functional communication device, the motorcycle controller performing CAN communication with the multi-functional communication device is identified through different CAN identifiers. The CAN communication uses a standard frame and the communication rate is 500 kbit / s.

[0020] The present invention has the following beneficial effects: The present invention adopts a communication device, which, in cooperation with a mobile phone and a PC computer, can meet the functional requirements of data monitoring, data storage, and fault analysis in the development and after-sales of motorcycle electronic control products. Moreover, its cost is close to that of the USB-CAN communication module on the market, bringing great convenience to development, matching, and after-sales. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of the CAN communication component in the present invention; Figure 3 is a schematic diagram of the Bluetooth antenna component in the present invention; Description of the reference numerals: 1. Housing; 2. Circuit board; 3. CAN communication component; 4. USB slave component; 5. Bluetooth antenna component; 6. TF storage component; 7. Microcontroller; 8. Communication interface; 9. CAN transceiver; 10. Common mode inductor; 11. EMC capacitor; 12. Electrostatic discharge protection and overvoltage protection device; 15. TF card; 16. LED indicator; 18. Bluetooth antenna; C5. Capacitor; C4. Capacitor; L1. Inductor. Detailed Embodiments

[0022] The present invention will be further described in conjunction with the drawings.

[0023] Please refer to Figure 1, the present invention provides a multifunctional communication device for a motorcycle, including a housing 1 and a circuit board 2 disposed within the housing 1; the circuit board 2 includes: a CAN communication component 3, a USB slave component 4, a Bluetooth antenna component 5, a TF storage component 6, and a microcontroller 7; the CAN communication component 3 is connected to the motorcycle CAN network, the USB slave component 4 is communicatively connected to a USB host device, the TF storage component 6 is used for inserting a TF card 15, and the microcontroller 7 is electrically connected to each component in the circuit board 2.

[0024] The CAN communication component 3 includes a communication interface 8, a CAN transceiver 9, a common mode inductor 10, an EMC capacitor 11, and an electrostatic discharge protection and overvoltage protection device 12.

[0025] Specifically, the communication interface 8 is used to connect to the vehicle CAN network, the CAN transceiver 9 realizes the conversion between the logic level of the microcontroller 7 and the differential level of the CAN bus, the common mode inductor 10 is used to suppress common mode interference and improve electromagnetic compatibility, the EMC capacitor 11 is used to improve EMC characteristics, and the electrostatic discharge protection and overvoltage protection device 12 is used to protect the circuit board 2 from damage caused by electrostatic discharge (ESD) events.

[0026] Further, the CAN communication component 3 supports CAN2.0A / B and CAN FD standards.

[0027] Further, the communication interface 8 uses the vehicle power supply to supply power to the multifunctional communication device.

[0028] Preferably, the communication interface 8 is selected as an OBD-II standard interface.

[0029] Preferably, the CAN transceiver 9 is a TJA1050.

[0030] Preferably, the common mode inductor 10 can use ACT45B-510-2P (TDK), with an inductance value of 51 μH.

[0031] Preferably, there are 2 EMC capacitors 11, which are respectively connected to CAN-H and ground, CAN-L and ground, with a capacitance value of 47 pF and a tolerance not exceeding 10%.

[0032] The USB slave component 4 is connected to an external USB host device through a USB communication cable, and the USB slave component 4 supports protocols above USB2.0.

[0033] Specifically, the external USB host device can be a PC computer, a mobile phone, or other electronic terminals supporting USB communication methods.

[0034] Preferably, the USB slave component 4 uses a Type-C interface.

[0035] Further, the USB slave component 4 uses an external USB host device to supply power to the multi-functional communication device through a Type-C interface.

[0036] The TF storage component 6 is connected to the TF card 15 through an SPI or SDIO interface, and the TF storage component 6 supports file systems in FAT32 and NTFS formats.

[0037] The microcontroller 7 is the core of the entire system. The microcontroller 7 is built-in with a 2Mbps low-power Bluetooth BLE communication module, a USB2.0 full-speed device interface, a CAN controller, SPI, and SDIO interfaces. The Bluetooth BLE communication module supports protocols above Bluetooth 5.0.

[0038] Preferably, the microcontroller 7 uses a CH32V208 chip.

[0039] Further, the Bluetooth antenna component 5 includes a Bluetooth antenna 18 printed on the circuit board 2, a capacitor C4 (1.8 pF), a capacitor C5 (1.8 pF), and an inductor L1 (1.8 nH). The capacitor C4 (1.8 pF), the capacitor C5 (1.8 pF), and the inductor L1 (1.8 nH) together form a π filter circuit.

[0040] Further, the FLASH in the microcontroller 7 stores CAN communication protocols, USB communication protocols, Bluetooth communication protocols, and FAT / NTFS file systems. The microcontroller 7 acts as a gateway to achieve the coordination of the various communication methods and the conversion between the various communication protocols.

[0041] Further, the circuit board 2 also includes a circuit 20 required for the system to work. The circuit 20 is a power supply circuit (whose function is to convert the +12V voltage introduced from the communication interface 8 into the 3.3V or 5V voltage required by the microcontroller 7 chip on the circuit board 2 through certain electrical components), a crystal oscillator circuit (a crystal oscillator and necessary capacitor components), and a firmware update / debugging (a debugging socket and necessary decoupling capacitors) circuit.

[0042] Preferably, the circuit board 2 includes at least one LED indicator 16. The indicator is connected to and controlled by the microcontroller (7), and the indicator is used to indicate the device status, including but not limited to the power status, working mode, data transmission status, error status, etc.

[0043] The present invention also provides a working method for a motorcycle multi-functional communication device, including the above multi-functional communication device. The multi-functional communication device can work in a variety of different modes, including: a program upgrade mode, a data offline real-time storage mode, a USB monitoring calibration and diagnosis mode, and a Bluetooth data communication mode.

[0044] When the multifunctional communication device operates in the program upgrade mode, the microcontroller 7 reads the program file stored in the TF card 15 and downloads it to the specified motorcycle controller through the CAN communication component 3.

[0045] Specifically, the program file includes, but is not limited to, the electronic fuel injection system (EFI) program, the anti-lock braking system (ABS) program, and the motor controller (MCU) program.

[0046] Preferably, the program file is an encrypted binary data file and contains verification data. The microcontroller 7 reads the program file and calculates the verification data with the same encryption algorithm as the program file to identify the legality of the program file through the consistency of the verification data.

[0047] Preferably, the program upgrade protocol in the CAN communication protocol can detect data transmission errors and data loss and adopt a data packet retransmission strategy to ensure the integrity of the program data.

[0048] Furthermore, it supports importing program files to the TF card 15 through the USB slave component 4 and the Bluetooth component.

[0049] When the multifunctional communication device operates in the data offline real-time storage mode, the microcontroller 7 reads the motorcycle CAN bus data and stores the read data stream in the TF card 15 in the form of a file.

[0050] Specifically, the supported data file types include, but are not limited to, binary files (.DAT), text files (.TXT), Vector software importable files (.ASC), and batch files (.CAN).

[0051] Preferably, the data stream contains timestamp information.

[0052] Preferably, the data files are stored in a specific folder, and a new data file is created every 5 minutes. The specific folder is created at the start of each vehicle power-on driving cycle.

[0053] Preferably, when the TF card 15 is full, it automatically overwrites the file with an earlier time.

[0054] Furthermore, in the data offline real-time storage mode, it supports exporting data through the USB slave component 4 and the Bluetooth component for further analysis.

[0055] When the multifunctional communication device works in the USB monitoring calibration and diagnosis mode, an external USB host device uses a USB data cable to connect to the USB slave component 4 Type-C interface of the multifunctional communication device, enumerates the microcontroller 7, and then performs bidirectional data exchange with the motorcycle controller through the communication protocol conversion of the microcontroller 7 and the CAN communication component 3, realizing functions such as data monitoring and storage, parameter calibration, and fault diagnosis.

[0056] When the multifunctional communication device works in the Bluetooth data communication mode, an external Bluetooth terminal communicates with the multifunctional communication device through the Bluetooth antenna component 5 of the multifunctional communication device, realizing the switching and configuration of the working mode of the multifunctional communication device; the external Bluetooth terminal then performs bidirectional data exchange with the motorcycle controller through the CAN communication component 3 of the multifunctional communication device, realizing functions such as data monitoring and storage, parameter calibration, and fault diagnosis of the motorcycle controller.

[0057] Furthermore, through the multifunctional communication device and an external Bluetooth terminal with networking capabilities, a remote diagnosis function can also be realized.

[0058] Preferably, the motorcycle controller that performs CAN communication with the multifunctional communication device is identified by different CAN identifiers. The CAN communication uses a standard frame and the communication rate is 500 kbit / s.

[0059] The above has introduced in detail a multifunctional communication device for motorcycles and the working method of this device provided by the embodiments of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution disclosed by the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A multifunctional communication device for a motorcycle, characterized in that: It includes a housing (1) and a circuit board (2) disposed within the housing (1); the circuit board (2) includes: a CAN communication component (3), a USB slave component (4), a Bluetooth antenna component (5), a TF storage component (6), and a microcontroller (7). The CAN communication component (3) is connected to the motorcycle CAN network, the USB slave component (4) is communicatively connected to a USB host device, the TF storage component (6) is for inserting a TF card (15), and the microcontroller (7) is electrically connected to each component in the circuit board (2).

2. A multi-functional communication device for a motorcycle, characterized in that: It includes a housing (1) and a circuit board (2) disposed within the housing (1); the circuit board (2) includes: a CAN communication component (3), a USB slave component (4), a Bluetooth antenna component (5), a TF storage component (6), and a microcontroller (7). The CAN communication component (3) is connected to the motorcycle CAN network, the USB slave component (4) is communicatively connected to a USB host device, the TF storage component (6) is for inserting a TF card (15), and the microcontroller (7) is electrically connected to each component in the circuit board (2).

3. The multifunctional communication device for a motorcycle according to claim 1 or 2, characterized in that: The FLASH in the microcontroller (7) stores CAN communication protocols, USB communication protocols, Bluetooth communication protocols, and FAT / NTFS file systems. The microcontroller (7) acts as a gateway to achieve the coordination of the various communication methods and the conversion between the communication protocols.

4. A multifunctional communication device for a motorcycle according to claim 1, characterized in that: The CAN communication component (3) includes a communication interface (8), a CAN transceiver (9), a common-mode inductor (10), an EMC capacitor (11), and an electrostatic discharge protection and overvoltage protection device (12). The communication interface (8) is selected as an OBD-II standard interface for connecting to the vehicle CAN network. The CAN transceiver (9) realizes the conversion between the logic level of the microcontroller (7) and the differential level of the CAN bus. The common-mode inductor (10) is used to suppress common-mode interference and improve electromagnetic compatibility. The EMC capacitor (11) is used to improve EMC characteristics. The electrostatic discharge protection and overvoltage protection device (12) is used to protect the circuit board (2) from damage caused by electrostatic discharge (ESD) events. The CAN communication component (3) supports CAN2.0A / B and CAN FD standards, and the vehicle power supply can be used to supply power to the multifunctional communication device through the OBD-II standard interface.

5. A multi-functional communication device for a motorcycle according to claim 1, characterized in that: The USB slave component (4) is connected to an external USB host device through a Type-C interface. The external USB host device can be a PC computer, a mobile phone, or other electronic terminals that support USB communication methods. The USB slave component (4) supports protocols above USB2.0, and the external USB host device can be used to supply power to the multifunctional communication device through the Type-C interface.

6. The multi-functional communication device for a motorcycle according to claim 1, characterized in that: The TF storage component (6) is connected to the TF card (15) through an SPI or SDIO interface. The TF storage component (6) supports FAT32 and NTFS file systems.

7. A multifunctional communication device for a motorcycle according to claim 1, characterized in that: The circuit board (2) at least includes an LED indicator (16). The indicator is connected to and controlled by the microcontroller (7), and is used to indicate the device status, including but not limited to power status, working mode, data transmission status, error status, etc.

8. The multifunctional communication device for a motorcycle according to claim 1, characterized in that: The circuit board (2) also includes the circuits (20) required for the system operation. The circuits (20) are a power supply circuit, a crystal oscillator circuit, and a firmware update / debug circuit.

9. A working method of a multi-functional communication device for a motorcycle, characterized in that: Including the multifunctional communication device according to any one of the above claims 1 to 8, the multifunctional communication device can operate in a variety of different modes, including: program upgrade mode, data offline real-time storage mode, USB monitoring calibration diagnosis mode, Bluetooth data communication mode.

10. A working method of a motorcycle multi-functional communication device according to claim 9, characterized in that: When the multifunctional communication device operates in the program upgrade mode, the microcontroller (7) reads the program file stored in the TF card (15) and downloads it to the specified motorcycle controller through the CAN communication component (3). The program file includes but is not limited to the electronic fuel injection system (EFI) program, the anti-lock braking system (ABS) program, and the motor controller (MCU) program. The program file is an encrypted binary data file and contains check data. The microcontroller (7) reads the program file and calculates the check data with the same encryption algorithm, and identifies the legality of the program file by the consistency of the check data. The program upgrade protocol in the CAN communication protocol can detect data transmission errors and data loss, and adopt a data packet retransmission strategy to ensure the integrity of the program data, and supports importing the program file to the TF card (15) through the USB slave component (4) and the Bluetooth component.

11. A working method of a multi-functional communication device for a motorcycle according to claim 9, characterized in that: When the multifunctional communication device operates in the data offline real-time storage mode, the microcontroller (7) reads the motorcycle CAN bus data and stores the read data stream in the TF card (15) in the form of a file. The supported data file types include but are not limited to binary files (.DAT), text files (.TXT), Vector software importable files (.ASC), and batch files (.CAN). The data stream contains timestamp information. The data files are stored in a specific folder. A new data file is created every 5 minutes. The specific folder is created at the beginning of each vehicle power-on driving cycle. When the TF card (15) is full, the file with an earlier time is automatically overwritten; The data offline real-time storage mode supports exporting data through the USB slave component (4) and the Bluetooth component for further analysis.

12. A working method of a motorcycle multi-functional communication device according to claim 9, characterized in that: When the multifunctional communication device operates in the USB monitoring calibration diagnosis mode, an external USB host device uses a USB data cable to connect to the Type-C interface of the USB slave component (4) of the multifunctional communication device, enumerates the microcontroller (7), and then performs bidirectional data exchange with the motorcycle controller through the communication protocol conversion of the microcontroller (7) and the CAN communication component (3) to achieve data monitoring and storage, parameter calibration, and fault diagnosis.

13. A working method of a multi-functional communication device for a motorcycle according to claim 9, characterized in that: When the multifunctional communication device works in the Bluetooth data communication mode, an external Bluetooth terminal communicates with the multifunctional communication device through the Bluetooth antenna assembly (5) of the multifunctional communication device, so as to realize the switching and configuration of the working mode of the multifunctional communication device; the external Bluetooth terminal further performs bidirectional data exchange with the motorcycle controller through the CAN communication component (3) of the multifunctional communication device, so as to realize the data monitoring and storage, parameter calibration, and fault diagnosis of the motorcycle controller; through the multifunctional communication device and the external Bluetooth terminal with networking function, the remote diagnosis function can also be realized.

14. A working method of a multi-functional communication device for a motorcycle according to claim 9, characterized in that: The Bluetooth antenna assembly includes a Bluetooth antenna (18), a capacitor (C4), a capacitor (C5), and an inductor (L1) printed on the circuit board, and the capacitor (C4), the capacitor (C5), and the inductor (L1) form a π filter circuit.

15. A working method of a multi-functional communication device for a motorcycle according to any one of claims 10 to 14, characterized in that: The motorcycle controller performing CAN communication with the multifunctional communication device is identified by different CAN identifiers.

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