Fault tracing system of vehicle control unit

Abstract

The utility model provides a fault tracing system of a vehicle control unit. The system comprises a storage unit, a main control unit, a radio frequency processing unit, an antenna unit, a radio frequency tag and a shell, the main control unit is respectively in circuit connection with the storage unit and the radio frequency processing unit; the radio frequency processing unit is connected with the antenna unit; the radio frequency tag is fixedly arranged on the inner side of the shell, the radio frequency tag is located over the antenna unit, and the linear distance between the radio frequency tag and the antenna unit in the vertical direction is within a preset distance range. The system can read the backup information of the storage unit from the radio frequency tag through the radio frequency reader-writer after the on-board storage unit is subjected to unrecoverable electrical damage caused by a serious electrical fault of the vehicle control unit, so that fault tracing analysis is carried out on data such as software version information of the controller.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a fault tracing system for a vehicle controller. Background Art

[0002] With the continuous advancement of automobile technology, the vehicle controller, as the core component of the vehicle, undertakes the important tasks of coordinating the operation of various subsystems, optimizing vehicle performance, and ensuring driving safety. However, in the actual operation process, the vehicle controller may fail due to various reasons, such as hardware damage, software errors, communication anomalies, etc. These failures may lead to reduced vehicle performance, increased safety hazards, and even cause serious traffic accidents.

[0003] Most vehicle controller hardware is equipped with a dedicated storage unit to store software version information and controller status information. Therefore, when a vehicle controller fails, the prior art often traces the cause of the failure of the failed controller by reading the data in the storage unit.

[0004] However, when a serious electrical fault occurs in the controller, the dedicated storage unit configured on the controller hardware will be damaged, resulting in the loss of data information stored therein, making it impossible to trace back and analyze the cause of the controller failure. Utility Model Content

[0005] The present application provides a fault tracing system for a vehicle controller, which is used to solve the problem in the prior art that fault tracing cannot be performed due to damage of a dedicated storage unit in the vehicle controller.

[0006] The present application provides a vehicle controller fault tracing system, comprising: a storage unit, a main control unit, a radio frequency processing unit, an antenna unit, a radio frequency tag and a housing;

[0007] The main control unit is connected to the storage unit and the radio frequency processing unit circuit respectively; the radio frequency processing unit is connected to the antenna unit;

[0008] The radio frequency tag is fixedly arranged on the inner side of the housing, and the radio frequency tag is located directly above the antenna unit, and the straight-line distance between the radio frequency tag and the antenna unit in the vertical direction is within a preset distance range;

[0009] The main control unit is used to write the vehicle information collected in real time into the storage unit when the vehicle controller is running, and synchronously write the vehicle information into the radio frequency tag through the radio frequency processing unit and the antenna unit.

[0010] Optionally, the system further comprises: a communication unit;

[0011] The communication unit is connected to the main control unit circuit, and is used to obtain the interactive information sent by the external component and upgrade the vehicle-mounted software version corresponding to the vehicle controller;

[0012] When the vehicle-mounted software version is upgraded, the communication unit is used to send the corresponding software version information to the main control unit, so that the main control unit writes the software version information into the storage unit.

[0013] Optionally, the system further comprises: a power supply unit;

[0014] The power supply unit is connected to the main control unit circuit, and is used to supply power to the storage unit, the main control unit, the communication unit, the radio frequency processing unit and the antenna unit.

[0015] Optionally, the power supply unit includes: a first power supply module, a second power supply module and a third power supply module;

[0016] The first power supply module is used to provide working power for the storage unit, the communication unit, the radio frequency processing unit and the antenna unit;

[0017] The second power supply module is used to supply power to the peripherals of the main control unit;

[0018] The third power supply module is used to supply power to the core of the main control unit.

[0019] Optionally, the first power supply module includes: a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first inductor and a first chip;

[0020] The first capacitor is connected in parallel with the second capacitor, the first end of the second capacitor is connected to the second pin, the third pin and the ninth pin of the first chip, and the second end of the second capacitor is grounded; the first end of the third capacitor is connected to the tenth pin of the first chip, the second end of the third capacitor is connected to the first end of the first inductor and the sixth pin of the first chip, the second end of the first inductor is connected to the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded; the first end of the fifth capacitor is connected to the twelfth pin and the thirteenth pin of the first chip, and the second end of the fifth capacitor is grounded.

[0021] Optionally, the second power supply module includes: a sixth capacitor, a seventh capacitor and a second chip;

[0022] The first end of the sixth capacitor is connected to the first pin of the second chip, the second end of the sixth capacitor is connected to the second pin of the second chip, the first end of the seventh capacitor is connected to the third pin of the second chip, and the second end of the seventh capacitor is connected to the second pin of the second chip.

[0023] Optionally, the third power supply module includes: an eighth capacitor, a ninth capacitor, a first resistor and a third chip.

[0024] The first end of the eighth capacitor is connected to the sixth pin and the fourth pin of the third chip, the second end of the eighth capacitor is grounded, the first end of the ninth capacitor is connected to the first end of the first resistor, the second end of the ninth capacitor is grounded, the first end of the first resistor is also connected to the first pin of the third chip, and the second end of the first resistor is connected to the fifth pin of the third chip.

[0025] Optionally, the communication unit includes: a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a third resistor, a fourth resistor and a fifth chip;

[0026] The first end of the tenth capacitor is connected to the first pin of the fifth chip, the second end of the tenth capacitor is connected to the sixth pin of the fifth chip, the eleventh capacitor is connected to the twentieth pin of the fifth chip, the second end of the eleventh capacitor is connected to the fifteenth pin, the sixteenth pin and the seventeenth pin of the fifth chip, the first end of the twelfth capacitor is connected to the ninth pin of the fifth chip, the second end of the twelfth capacitor is connected to the tenth pin of the fifth chip, the first end of the thirteenth capacitor is connected to the twelfth pin and the thirteenth pin of the fifth chip, the second end of the thirteenth capacitor is connected to the eleventh pin of the fifth chip, the first end of the third resistor is connected to the eighteenth pin of the fifth chip, the second end of the third resistor is connected to the first end of the fourteenth capacitor, the first end of the fourth resistor is connected to the nineteenth pin of the fifth chip, the second end of the fourth resistor is connected to the first end of the fourteenth capacitor, and the second end of the fourteenth capacitor is grounded.

[0027] Optionally, the radio frequency processing unit includes: a radio frequency front end unit and a matching unit, wherein a transmitting pin and a receiving pin of the radio frequency front end unit are respectively connected to the matching unit;

[0028] The radio frequency front end unit includes: a sixteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, a nineteenth capacitor, a twentieth capacitor, a twenty-first capacitor, a twenty-second capacitor, a twenty-third capacitor, a first crystal oscillator and a sixth chip;

[0029] The sixteenth capacitor is connected in parallel with the seventeenth capacitor, the first end of the seventeenth capacitor is connected to the third pin and the fourth pin of the sixth chip, and the second end of the seventeenth capacitor is grounded; the eighteenth capacitor is connected in parallel with the nineteenth capacitor, the first end of the nineteenth capacitor is connected to the fifty-first pin, the fifty-third pin, the fifty-fourth pin, the fifty-fifth pin and the fifty-sixth pin of the sixth chip, and the second end of the nineteenth capacitor is grounded; the twentieth capacitor and the twenty-first capacitor are connected in parallel, the first end of the twenty-first capacitor is connected to the twenty-first pin and the forty-ninth pin of the sixth chip, and the second end of the twenty-first capacitor is grounded; the twenty-second capacitor and the twenty-third capacitor are connected in parallel, the first end of the twenty-third capacitor is connected to the eleventh pin and the twelfth pin of the sixth chip, and the second end of the twenty-third capacitor is grounded; the first end of the first crystal oscillator is connected to the thirty-seventh pin of the sixth chip, and the second end of the first crystal oscillator is connected to the thirty-sixth pin of the sixth chip.

[0030] Optionally, the matching unit includes: a twenty-fourth capacitor, a twenty-fifth capacitor, a twenty-sixth capacitor, a twenty-seventh capacitor, a twenty-eighth capacitor, a twenty-ninth capacitor, a thirtieth capacitor and a thirty-first capacitor;

[0031] The first end of the 24th capacitor is connected to the first end of the 26th capacitor, the second end of the 24th capacitor is grounded, the second end of the 26th capacitor is connected to the seventh pin and the eighth pin of the sixth chip, the first end of the 25th capacitor is connected to the first end of the 27th capacitor, the second end of the 25th capacitor is grounded, the second end of the 27th capacitor is connected to the ninth pin and the tenth pin of the sixth chip, the 28th capacitor is connected in series with the 29th capacitor, the first end of the 28th capacitor is connected to the ninth pin and the tenth pin of the sixth chip, the second end of the 29th capacitor is grounded, the 30th capacitor is connected in series with the 31st capacitor, the first end of the 30th capacitor is connected to the seventh pin and the eighth pin of the sixth chip, and the second end of the 31st capacitor is grounded.

[0032] The present application provides a fault tracing system for a vehicle controller, comprising: a storage unit, a main control unit, a radio frequency processing unit, an antenna unit, a radio frequency tag and a housing; the main control unit is respectively connected to the storage unit and the radio frequency processing unit circuit; the radio frequency processing unit is connected to the antenna unit; the radio frequency tag is fixedly arranged on the inner side of the housing, and the radio frequency tag is located directly above the antenna unit, and the straight-line distance between the radio frequency tag and the antenna unit in the vertical direction is within a preset distance range; the main control unit is used to write the real-time collected vehicle information into the storage unit when the vehicle controller is running, and synchronously write the vehicle information into the radio frequency tag through the radio frequency processing unit and the antenna unit. The system of the present application can read the backup information of the storage unit from the radio frequency tag through the radio frequency reader after a serious electrical fault occurs in the vehicle controller, resulting in irreversible electrical damage to the onboard storage unit, thereby performing fault tracing analysis on the controller's software version information and other data. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0034] Figure 1 A schematic diagram of the structure of the vehicle controller fault tracing system provided in the embodiment of the present application Figure 1 ;

[0035] Figure 2 A schematic diagram of the structure of the vehicle controller fault tracing system provided in the embodiment of the present application Figure 2 ;

[0036] Figure 3 A circuit schematic diagram of a storage unit of a fault tracing system for a vehicle controller provided in an embodiment of the present application;

[0037] Figure 4 A circuit schematic diagram of a communication unit of a fault tracing system for a vehicle controller provided in an embodiment of the present application;

[0038] Figure 5 A circuit schematic diagram of a first power supply module of a fault tracing system of a vehicle controller provided in an embodiment of the present application;

[0039] Figure 6 A circuit schematic diagram of a second power supply module of a fault tracing system of a vehicle controller provided in an embodiment of the present application;

[0040] Figure 7 A circuit schematic diagram of a third power supply module of a fault tracing system of a vehicle controller provided in an embodiment of the present application;

[0041] Figure 8 A circuit schematic diagram of the radio frequency processing unit of the fault tracing system of the vehicle controller provided in an embodiment of the present application.

[0042] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here.

[0045] The vehicle controller plays a vital role in ensuring the normal driving of the car, improving energy utilization efficiency, and ensuring vehicle safety. Controller failure will pose a threat to the driving safety of the vehicle. Therefore, analyzing the cause of the controller failure is of great significance to ensuring the safety of the vehicle driving process.

[0046] The prior art often records software version information and vehicle status information through a dedicated storage unit in the controller. If a serious accident occurs, the storage unit in the controller will be damaged, so the software version information and vehicle status information recorded therein cannot be fully read, resulting in the inability to analyze the cause of the fault.

[0047] In order to solve the above technical problems, an embodiment of the present application provides a fault tracing system for a vehicle controller, in which software version information and vehicle status information are written into a radio frequency tag through a radio frequency processing unit and an antenna. Since the radio frequency tag has no direct electrical connection with the hardware circuit of the vehicle controller, even if a serious electrical fault occurs in the vehicle controller, it will not affect the information stored in the radio frequency tag. That is, the software version information and vehicle status information in the radio frequency tag can be read by a tag reader, thereby performing fault tracing analysis.

[0048] Figure 1 A schematic diagram of the structure of the vehicle controller fault tracing system provided in the embodiment of the present application Figure 1 .like Figure 1 As shown, the fault tracing system of the vehicle controller includes: a storage unit 100, a main control unit 200, a radio frequency processing unit 300, an antenna unit 400, a radio frequency tag 500 and a housing 600.

[0049] The storage unit 100 is used to store data such as the software version information of the vehicle controller. Figure 3 The storage unit 100 includes a second resistor R2 and a fourth chip U4. The fourth chip U4 is implemented by BR25H010 of Rohm Semiconductor. The first end of the second resistor R2 is connected to the power supply, and the second end is connected to the third pin and the seventh pin of the fourth chip U4.

[0050] Table 1 is a schematic diagram of the pin description of the fourth chip U4 provided in this embodiment. In conjunction with Table 1, the name and function of each pin sequence in the fourth chip U4 are described below.

[0051] Table 1

[0052]

[0053]

[0054] The main control unit 200 is connected to the storage unit 100 and the RF processing unit 300 circuits respectively; the RF processing unit 300 is connected to the antenna unit 400.

[0055] The main control unit 200 is used to write the vehicle information collected in real time into the storage unit 100 when the vehicle controller is running, and synchronously write the vehicle information into the radio frequency tag 500 through the radio frequency processing unit 300 and the antenna unit 400.

[0056] The RFID tag 500 is fixedly disposed inside the housing 600 , and the RFID tag 500 is located directly above the antenna unit 400 , and the linear distance between the RFID tag 500 and the antenna unit 400 along the vertical direction is within a preset distance range.

[0057] The purpose of placing the RFID tag right above the antenna unit is to better write data into the RFID tag.

[0058] In this embodiment, the vertical distance between the RFID tag 500 and the antenna unit 400 can be set at 4-5 cm. In order to prevent the RF signal from generating an eddy current effect with the metal shell and affecting the RF communication, there is a self-adhesive ferrite sheet between the RFID tag 500 and the shell. The size of the ferrite sheet is 10*10 cm. The antenna in the antenna unit 400 is an onboard PCB antenna, which can be circular, rectangular or other irregular shapes.

[0059] The fault tracing system of the vehicle controller provided in this embodiment includes: a storage unit, a main control unit, a radio frequency processing unit, an antenna unit, a radio frequency tag and a shell; the main control unit is respectively connected to the storage unit and the radio frequency processing unit circuit; the radio frequency processing unit is connected to the antenna unit; the radio frequency tag is fixedly arranged on the inner side of the shell, and the radio frequency tag is located directly above the antenna unit, and the straight-line distance between the radio frequency tag and the antenna unit in the vertical direction is within a preset distance range; in this embodiment, the vehicle information collected in real time is written into the storage unit through the main control unit, and the vehicle information is synchronously written into the radio frequency tag through the radio frequency processing unit and the antenna unit, so that after the storage unit is irreversibly electrically damaged, the backup information of the storage unit can be read from the radio frequency tag.

[0060] Figure 2 A schematic diagram of the structure of the vehicle controller fault tracing system provided in the embodiment of the present application Figure 2 .like Figure 2 As shown, this embodiment is Figure 1 Based on the embodiment, the fault tracing system of the vehicle controller is described in detail. The system also includes a communication unit 800, which is connected to the main control unit 200 circuit, and the communication unit 800 is used to obtain the interactive information sent by the external component, and to upgrade the vehicle-mounted software version corresponding to the vehicle controller; when the vehicle-mounted software version is upgraded, the communication unit 800 is used to send the corresponding software version information to the main control unit 200, so that the main control unit 200 writes the software version information into the storage unit.

[0061] Figure 4 The circuit schematic diagram of the communication unit 800 provided in this embodiment. Figure 4 , the communication unit 800 includes: a tenth capacitor C23, an eleventh capacitor C26, a twelfth capacitor C29, a thirteenth capacitor C30, a fourteenth capacitor C31, a third resistor R3, a fourth resistor R4 and a fifth chip U6, and the fifth chip U6 is implemented by ISOW1044 of Texas Instruments;

[0062] Table 2 is a schematic diagram of the pin description of the fifth chip U6 provided in this embodiment. In the following, in conjunction with Table 2, the names and functions of some pin sequences in the fifth chip U6 are described.

[0063] Table 2

[0064]

[0065]

[0066] Specifically, the first end of the tenth capacitor C23 is connected to the first pin of the fifth chip U6, the second end of the tenth capacitor C23 is connected to the sixth pin of the fifth chip U6, the eleventh capacitor C26 is connected to the twentieth pin of the fifth chip U6, the second end of the eleventh capacitor C26 is connected to the fifteenth pin, the sixteenth pin and the seventeenth pin of the fifth chip U6, the first end of the twelfth capacitor C29 is connected to the ninth pin of the fifth chip U6, the second end of the twelfth capacitor C29 is connected to the tenth pin of the fifth chip U6, the first end of the thirteenth capacitor C30 is connected to the twelfth pin and the thirteenth pin of the fifth chip U6, the second end of the thirteenth capacitor C30 is connected to the eleventh pin of the fifth chip U6, the first end of the third resistor R3 is connected to the eighteenth pin of the fifth chip U6, the second end of the third resistor R3 is connected to the first end of the fourteenth capacitor C31, the first end of the fourth resistor R4 is connected to the nineteenth pin of the fifth chip U6, the second end of the fourth resistor R4 is connected to the first end of the fourteenth capacitor C31, and the second end of the fourteenth capacitor C31 is grounded.

[0067] Optionally, the system also includes a power supply unit 700, which is circuit-connected to the main control unit 200 and is used to generate power supplies of different voltages to power the storage unit 100, the main control unit 200, the communication unit 800, the RF processing unit 300 and the antenna unit 400.

[0068] The power supply unit 700 also includes: a first power supply module, a second power supply module and a third power supply module. The first power supply module is used to provide working power for the storage unit 100, the communication unit 800, the radio frequency processing unit 300 and the antenna unit 400; the second power supply module is used to power the peripherals of the main control unit 200; and the third power supply module is used to power the core of the main control unit 400.

[0069] Figure 5 This is a circuit diagram of the first power supply module provided in this embodiment. Figure 5 , a first power supply module, including: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C9, a fifth capacitor C8, a first inductor L1 and a first chip U1, wherein the first chip U1 is implemented by MAX25262 of Analog Semiconductor;

[0070] The first capacitor C1 is connected in parallel with the second capacitor C2, the first end of the second capacitor C2 is connected to the second pin, the third pin and the ninth pin of the first chip U1, and the second end of the second capacitor C2 is grounded; the first end of the third capacitor C3 is connected to the tenth pin of the first chip U1, the second end of the third capacitor C3 is connected to the first end of the first inductor L1 and the sixth pin of the first chip U1, the second end of the first inductor L1 is connected to the first end of the fourth capacitor C9, and the second end of the fourth capacitor C9 is grounded; the first end of the fifth capacitor C8 is connected to the twelfth pin and the thirteenth pin of the first chip U1, and the second end of the fifth capacitor C8 is grounded.

[0071] Figure 6 This is a circuit diagram of the second power supply module provided in this embodiment. Figure 6 , a second power supply module, including: a sixth capacitor C4, a seventh capacitor C5 and a second chip U2, the second chip U2 is implemented by TPS7B88 of Texas Instruments;

[0072] The first end of the sixth capacitor C4 is connected to the first pin of the second chip U2, the second end of the sixth capacitor C4 is connected to the second pin of the second chip U2, the first end of the seventh capacitor C5 is connected to the third pin of the second chip U2, and the second end of the seventh capacitor C5 is connected to the second pin of the second chip U2.

[0073] Figure 7 This is a circuit diagram of the third power supply module provided in this embodiment. Figure 7 , a third power supply module, including: an eighth capacitor C6, a ninth capacitor C7, a first resistor R1 and a third chip U3, the third chip U3 is implemented by TPS745 of Texas Instruments;

[0074] The first end of the eighth capacitor C6 is connected to the sixth pin and the fourth pin of the third chip U3, the second end of the eighth capacitor C6 is grounded, the first end of the ninth capacitor C7 is connected to the first end of the first resistor, the second end of the ninth capacitor C7 is grounded, the first end of the first resistor R1 is also connected to the first pin of the third chip U3, and the second end of the first resistor R1 is connected to the fifth pin of the third chip U3.

[0075] Figure 8 This is a circuit diagram of the RF processing unit 300 provided in this embodiment. Figure 8 , the radio frequency processing unit 300 includes: a radio frequency front end unit and a matching unit, wherein the transmitting pin and the receiving pin of the radio frequency front end unit are respectively connected to the matching unit;

[0076] The radio frequency front-end unit includes: a sixteenth capacitor C15, a seventeenth capacitor C16, an eighteenth capacitor C12, a nineteenth capacitor C13, a twentieth capacitor C10, a twenty-first capacitor C11, a twenty-second capacitor C27, a twenty-third capacitor C28, a first crystal oscillator X1 and a sixth chip U5, wherein the sixth chip U5 adopts a radio frequency front-end chip PTX130R of Renesas Semiconductor;

[0077] Table 3 is a schematic diagram of the pin description of the sixth chip U5 provided in this embodiment. In the following, in conjunction with Table 3, the names and functions of some pins in the sixth chip U5 are described.

[0078] Table 3

[0079]

[0080]

[0081] The sixteenth capacitor C15 is connected in parallel with the seventeenth capacitor C16, the first end of the seventeenth capacitor C16 is connected to the third pin and the fourth pin of the sixth chip U5, and the second end of the seventeenth capacitor C16 is grounded; the eighteenth capacitor C12 is connected in parallel with the nineteenth capacitor C13, the first end of the nineteenth capacitor C13 is connected to the fifty-first pin, the fifty-third pin, the fifty-fourth pin, the fifty-fifth pin and the fifty-sixth pin of the sixth chip U5, and the second end of the nineteenth capacitor C13 is grounded; the twentieth capacitor C10 and the twenty-first capacitor C11 are connected in parallel, the first end of the twenty-first capacitor C11 is connected to the twenty-first pin and the forty-ninth pin of the sixth chip U5, and the second end of the twenty-first capacitor C11 is grounded; the twenty-second capacitor C27 and the twenty-third capacitor C28 are connected in parallel, the first end of the twenty-third capacitor C28 is connected to the eleventh pin and the twelfth pin of the sixth chip U5, and the second end of the twenty-third capacitor C28 is grounded; the first end of the first crystal oscillator X1 is connected to the thirty-seventh pin of the sixth chip U5, and the second end of the first crystal oscillator X1 is connected to the thirty-sixth pin of the sixth chip U5.

[0082] a matching unit, comprising: a twenty-fourth capacitor C17, a twenty-fifth capacitor C20, a twenty-sixth capacitor C18, a twenty-seventh capacitor C19, a twenty-eighth capacitor C21, a twenty-ninth capacitor C24, a thirtieth capacitor C22 and a thirty-first capacitor C25;

[0083] The first end of the twenty-fourth capacitor C17 is connected to the first end of the twenty-sixth capacitor C18, the second end of the twenty-fourth capacitor C17 is grounded, the second end of the twenty-sixth capacitor C18 is connected to the seventh pin and the eighth pin of the sixth chip U5, the first end of the twenty-fifth capacitor C20 is connected to the first end of the twenty-seventh capacitor C19, the second end of the twenty-fifth capacitor C20 is grounded, the second end of the twenty-seventh capacitor C19 is connected to the ninth pin and the tenth pin of the sixth chip U5, the twenty-eighth capacitor C21 is connected in series with the twenty-ninth capacitor C24, the first end of the twenty-eighth capacitor C21 is connected to the ninth pin and the tenth pin of the sixth chip U5, the second end of the twenty-ninth capacitor C24 is grounded, the thirtieth capacitor C22 is connected in series with the thirty-first capacitor C25, the first end of the thirtieth capacitor C22 is connected to the seventh pin and the eighth pin of the sixth chip U5, and the second end of the thirty-first capacitor C25 is grounded.

[0084] The fault tracing system of the vehicle controller provided in this embodiment includes: a storage unit, a main control unit, a radio frequency processing unit, an antenna unit, a radio frequency tag and a housing, as well as a communication unit and a power supply unit. The power supply unit is used to generate power supplies of different voltages to power the storage unit, the main control unit, the communication unit, the radio frequency processing unit and the antenna unit. This embodiment interacts with the radio frequency tag through the radio frequency processing unit, so that the vehicle status information is synchronously written into the radio frequency tag, so that when a controller fails, the vehicle data information stored in the radio frequency tag can be read through the radio frequency reader, and then the cause of the failure can be traced and analyzed.

[0085] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0086] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A fault tracing system for a vehicle controller, characterized in that: include: Storage unit, main control unit, radio frequency processing unit, antenna unit, radio frequency tag and housing; The main control unit is connected to the storage unit and the radio frequency processing unit circuit respectively; the radio frequency processing unit is connected to the antenna unit; The radio frequency tag is fixedly arranged on the inner side of the housing, and the radio frequency tag is located directly above the antenna unit, and the straight-line distance between the radio frequency tag and the antenna unit in the vertical direction is within a preset distance range; The main control unit is used to write the vehicle information collected in real time into the storage unit when the vehicle controller is running, and synchronously write the vehicle information into the radio frequency tag through the radio frequency processing unit and the antenna unit.

2. The system according to claim 1, characterized in that The system further comprises: a communication unit; The communication unit is connected to the main control unit circuit, and is used to obtain the interactive information sent by the external component and upgrade the vehicle-mounted software version corresponding to the vehicle controller; When the vehicle-mounted software version is upgraded, the communication unit is used to send the corresponding software version information to the main control unit, so that the main control unit writes the software version information into the storage unit.

3. The system according to claim 2, characterized in that The system further comprises: a power supply unit; The power supply unit is connected to the main control unit circuit, and is used to supply power to the storage unit, the main control unit, the communication unit, the radio frequency processing unit and the antenna unit.

4. The system according to claim 3, characterized in that The power supply unit comprises: a first power supply module, a second power supply module and a third power supply module; The first power supply module is used to provide working power for the storage unit, the communication unit, the radio frequency processing unit and the antenna unit; The second power supply module is used to supply power to the peripherals of the main control unit; The third power supply module is used to supply power to the core of the main control unit.

5. The system according to claim 4, characterized in that The first power supply module includes: a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first inductor and a first chip; The first capacitor is connected in parallel with the second capacitor, the first end of the second capacitor is connected to the second pin, the third pin and the ninth pin of the first chip, and the second end of the second capacitor is grounded; the first end of the third capacitor is connected to the tenth pin of the first chip, the second end of the third capacitor is connected to the first end of the first inductor and the sixth pin of the first chip, the second end of the first inductor is connected to the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded; the first end of the fifth capacitor is connected to the twelfth pin and the thirteenth pin of the first chip, and the second end of the fifth capacitor is grounded.

6. The system according to claim 4, characterized in that The second power supply module includes: a sixth capacitor, a seventh capacitor and a second chip; The first end of the sixth capacitor is connected to the first pin of the second chip, the second end of the sixth capacitor is connected to the second pin of the second chip, the first end of the seventh capacitor is connected to the third pin of the second chip, and the second end of the seventh capacitor is connected to the second pin of the second chip.

7. The system according to claim 4, characterized in that The third power supply module includes: an eighth capacitor, a ninth capacitor, a first resistor and a third chip; The first end of the eighth capacitor is connected to the sixth pin and the fourth pin of the third chip, the second end of the eighth capacitor is grounded, the first end of the ninth capacitor is connected to the first end of the first resistor, the second end of the ninth capacitor is grounded, the first end of the first resistor is also connected to the first pin of the third chip, and the second end of the first resistor is connected to the fifth pin of the third chip.

8. The system according to claim 2, characterized in that The communication unit comprises: a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a third resistor, a fourth resistor and a fifth chip; The first end of the tenth capacitor is connected to the first pin of the fifth chip, the second end of the tenth capacitor is connected to the sixth pin of the fifth chip, the eleventh capacitor is connected to the twentieth pin of the fifth chip, the second end of the eleventh capacitor is connected to the fifteenth pin, the sixteenth pin and the seventeenth pin of the fifth chip, the first end of the twelfth capacitor is connected to the ninth pin of the fifth chip, the second end of the twelfth capacitor is connected to the tenth pin of the fifth chip, the first end of the thirteenth capacitor is connected to the twelfth pin and the thirteenth pin of the fifth chip, the second end of the thirteenth capacitor is connected to the eleventh pin of the fifth chip, the first end of the third resistor is connected to the eighteenth pin of the fifth chip, the second end of the third resistor is connected to the first end of the fourteenth capacitor, the first end of the fourth resistor is connected to the nineteenth pin of the fifth chip, the second end of the fourth resistor is connected to the first end of the fourteenth capacitor, and the second end of the fourteenth capacitor is grounded.

9. The system according to claim 1, characterized in that The radio frequency processing unit comprises: a radio frequency front end unit and a matching unit, wherein a transmitting pin and a receiving pin of the radio frequency front end unit are respectively connected to the matching unit; The radio frequency front end unit includes: a sixteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, a nineteenth capacitor, a twentieth capacitor, a twenty-first capacitor, a twenty-second capacitor, a twenty-third capacitor, a first crystal oscillator and a sixth chip; The sixteenth capacitor is connected in parallel with the seventeenth capacitor, the first end of the seventeenth capacitor is connected to the third pin and the fourth pin of the sixth chip, and the second end of the seventeenth capacitor is grounded; the eighteenth capacitor is connected in parallel with the nineteenth capacitor, the first end of the nineteenth capacitor is connected to the fifty-first pin, the fifty-third pin, the fifty-fourth pin, the fifty-fifth pin and the fifty-sixth pin of the sixth chip, and the second end of the nineteenth capacitor is grounded; the twentieth capacitor and the twenty-first capacitor are connected in parallel, the first end of the twenty-first capacitor is connected to the twenty-first pin and the forty-ninth pin of the sixth chip, and the second end of the twenty-first capacitor is grounded; the twenty-second capacitor and the twenty-third capacitor are connected in parallel, the first end of the twenty-third capacitor is connected to the eleventh pin and the twelfth pin of the sixth chip, and the second end of the twenty-third capacitor is grounded; the first end of the first crystal oscillator is connected to the thirty-seventh pin of the sixth chip, and the second end of the first crystal oscillator is connected to the thirty-sixth pin of the sixth chip.

10. The system according to claim 9, characterized in that The matching unit includes: a twenty-fourth capacitor, a twenty-fifth capacitor, a twenty-sixth capacitor, a twenty-seventh capacitor, a twenty-eighth capacitor, a twenty-ninth capacitor, a thirtieth capacitor and a thirty-first capacitor; The first end of the 24th capacitor is connected to the first end of the 26th capacitor, the second end of the 24th capacitor is grounded, the second end of the 26th capacitor is connected to the seventh pin and the eighth pin of the sixth chip, the first end of the 25th capacitor is connected to the first end of the 27th capacitor, the second end of the 25th capacitor is grounded, the second end of the 27th capacitor is connected to the ninth pin and the tenth pin of the sixth chip, the 28th capacitor is connected in series with the 29th capacitor, the first end of the 28th capacitor is connected to the ninth pin and the tenth pin of the sixth chip, the second end of the 29th capacitor is grounded, the 30th capacitor is connected in series with the 31st capacitor, the first end of the 30th capacitor is connected to the seventh pin and the eighth pin of the sixth chip, and the second end of the 31st capacitor is grounded.

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