An automotive interactive lamp fault diagnosis system and diagnosis method

Abstract

The present invention provides an automotive interactive lamp fault diagnosis system and a diagnosis method, which relates to the technical field of interactive lamp fault detection. The fault diagnosis system includes a host computer unit, a control unit, a driving unit, an execution unit, and a power supply unit. Through the automatic diagnosis of the lamp bead pixel points in the execution unit and the channels of the driving chip in the driving unit, it is ensured that the channels of the pixel points and the driving chip are correctly corresponding. When it is diagnosed that the channels of the lamp bead pixels and the driving chip do not correspond correctly, in an automatic repair manner, the correct array is saved to the Flash and the incorrect data is automatically replaced, solving the problem that manual verification of whether the channel mapping of the interactive lamp pixels and the driving chip is correct requires a large amount of time and has a low accuracy rate, and realizing the automatic diagnosis of whether the channel mapping of the interactive lamp pixels and the driving chip is correct, with high efficiency and high accuracy rate.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive interactive lamp diagnosis and detection, and particularly to an automotive interactive lamp fault diagnosis system and a diagnosis method. Background Art

[0002] With the development of new energy vehicles and driverless technologies, traffic conditions have become more complex and changeable. The development of vehicle-grade intelligent interactive lamps can convey information to the outside world more intuitively and vividly, and the recipient can easily understand it, thereby improving the user experience. However, the number of pixels of interactive lamps is relatively large, and mapping errors often occur between the pixels and the channels of the driving chip. When pixel mapping is incorrect, the display of pictures and animations will be disordered.

[0003] Since interactive lamps only support open-circuit and short-circuit diagnosis, whether the mapping between the pixels and the channels of the driving chip is correct needs to be checked manually. Due to the usually large number of interactive lamps, manual checking takes a lot of time and has a low accuracy rate. Summary of the Invention

[0004] An automotive interactive lamp fault diagnosis system and a diagnosis method disclosed by the present invention solve the problems that manual checking of whether the mapping between the pixels of an interactive lamp and the channels of the driving chip is correct takes a lot of time and has a low accuracy rate, and can automatically diagnose whether the mapping between the pixels of an interactive lamp and the channels of the driving chip is correct, with high efficiency and high accuracy.

[0005] To achieve the above object, the technical solution of the present invention is specifically implemented as follows:

[0006] On the one hand, the present invention discloses an automotive interactive lamp fault diagnosis system, including a host computer unit, a control unit, a driving unit, an execution unit, and a power supply unit. Among them, the host computer unit is used to receive an external fault diagnosis control command and send the received fault diagnosis control command to the control unit; the control unit is used to receive the fault diagnosis control command sent by the host computer unit, diagnose the driving function and faults of the driving unit according to the received fault diagnosis control command, and feedback the diagnosis result information to the host computer unit; the driving unit is used to receive and execute the fault diagnosis control command sent by the control unit, and send a driving command to the execution unit according to the fault diagnosis control command; the execution unit is used to receive and execute the driving command sent by the driving unit to realize the switch and gray scale control of the execution unit; the power supply unit is used to provide electric energy for the control unit and the execution unit.

[0007] Further, the automotive interactive lamp fault diagnosis system further includes a communication unit, and the communication unit performs network communication with the control unit.

[0008] Further, the execution unit includes a number of interactive lamp beads.

[0009] Further, the control unit communicates with the host unit through a CAN or RS232 or Ethernet interface.

[0010] Further, the control unit includes an open / short circuit diagnosis module, a pixel self-diagnosis module, a host computer interaction module, a pixel self-repair module, an external network communication module, and a main control module. Among them, the open / short circuit diagnosis module is used to diagnose the open / short circuit of the interactive light beads in the execution unit; the pixel self-diagnosis module is used to automatically diagnose the correspondence between the pixel points of the interactive light beads in the execution unit and the channels of the driving chips in the driving unit; the host computer interaction module is used to feedback the diagnosis result information to the host unit; when the pixel self-diagnosis module diagnoses that the correspondence between the pixel points of the interactive light beads in the execution unit and the channels of the driving chips in the driving unit is incorrect, it is used to write the correct data into the array of the pixel matrix; the external network communication module is used to receive external network instructions and feedback the diagnosis result information; the main control module is used to interact with the open / short circuit diagnosis module, the pixel self-diagnosis module, the host computer interaction module, the pixel self-repair module, and the external network communication module.

[0011] Further, the control unit further includes a storage module for storing the repaired array.

[0012] On the other hand, the present invention discloses an automotive interactive light fault diagnosis method, including the following steps:

[0013] S1: Initialize to ensure that there are no open or short circuit faults in the interactive light beads in the execution unit, and turn off all pixels of the interactive light beads.

[0014] S2: Receive an external network signal.

[0015] S3: Determine whether a fault diagnosis is required. If so, execute S4; if not, execute S2.

[0016] S4: Turn on the first pixel in the execution unit.

[0017] S5: Read the channel voltage value correctly corresponding to the first pixel. [[ID=z8]]

[0018] S6: Determine whether the read voltage value is correct. If so, execute S7; if not, execute S9.

[0019] S7: Record the mapping result of the first pixel as correct.

[0020] S8: Turn off the first pixel.

[0021] S9: Sequentially read the voltage values of other channels and compare them with the voltage curve.

[0022] S10: Set the channels that match the voltage curve as the correctly corresponding channels;

[0023] S11: Update the position of the first pixel in the pixel array;

[0024] S12: Store the updated pixel array in Flash;

[0025] S13: Complete the diagnosis of other pixels in sequence according to the above steps;

[0026] S14: Feed back the diagnosis result information to the host computer unit and the external network.

[0027] Beneficial technical effects:

[0028] 1. The present invention discloses an automotive interactive lamp fault diagnosis system, including a host computer unit, a control unit, a driving unit, an execution unit, and a power supply unit. Among them, the host computer unit is used to receive external fault diagnosis control commands and send the received fault diagnosis control commands to the control unit; the control unit is used to receive the fault diagnosis control commands sent by the host computer unit, diagnose the driving function and faults of the driving unit according to the received fault diagnosis control commands, and feed back the diagnosis result information to the host computer unit; the driving unit is used to receive and execute the fault diagnosis control commands sent by the control unit, and send driving commands to the execution unit according to the fault diagnosis control commands; the execution unit is used to receive and execute the driving commands sent by the driving unit to realize the on / off and gray-scale control of the execution unit; the power supply unit is used to provide electrical energy for the control unit and the execution unit, solving the problem that it takes a lot of time and has a low accuracy rate to manually check whether the channel mapping between the interactive lamp pixels and the driving chip is correct. It can automatically diagnose whether the channel mapping between the interactive lamp pixels and the driving chip is correct, with high efficiency and high accuracy;

[0029] 2. The present invention also discloses an automotive interactive lamp fault diagnosis method. When it is diagnosed that the channel corresponding to the pixel and the driving chip is incorrect, in an automatic repair manner, the correct array is saved to Flash and the incorrect data is automatically replaced, saving the software development cycle, being easy to implement, and having a wide applicability. Brief description of the drawings

[0030] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description in the embodiments will be briefly introduced below.

[0031] Figure 1 It is the structural diagram of an automotive interactive lamp fault diagnosis system described in the present invention;

[0032] Figure 2It is a structural diagram of a control unit in an automotive interactive lamp fault diagnosis system according to the present invention;

[0033] Figure 3 It is a step flowchart of a method for diagnosing faults in automotive interactive lamps according to the present invention. Specific embodiments

[0034] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0035] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] On the one hand, the present invention discloses an automotive interactive lamp fault diagnosis system. Refer to Figure 1 , which specifically includes a host computer unit, a control unit, a driving unit, an execution unit, and a power supply unit. Among them, the host computer unit is used to receive external fault diagnosis control commands and send the received fault diagnosis control commands to the control unit; the control unit is used to receive the fault diagnosis control commands sent by the host computer unit, diagnose the driving function and faults of the driving unit according to the received fault diagnosis control commands, and feedback the diagnosis result information to the host computer unit. Specifically, the control unit is the core of the system and communicates internally with the driving unit through SPI, CCSI, UART, private CAN, etc. The control unit realizes communication with the host computer unit through CAN or RS232 or Ethernet interface, so as to send the diagnosis result information to the host computer unit; the driving unit is used to receive and execute the fault diagnosis control commands sent by the control unit, and send driving commands to the execution unit according to the fault diagnosis control commands. Specifically, the control unit realizes the driving function and fault diagnosis function of the driving unit through signal lines such as CLK, SIN, SOUT, PWM, CSN, etc.; the execution unit is used to receive and execute the driving commands sent by the driving unit, and realize the switching and gray-scale control of the execution unit. Specifically, the execution unit includes several interactive lamp beads, and the interactive lamp beads can be LED lamp beads, or OLED lamp beads, or MiniOLED lamp beads. Here, there is no limitation on the specific form of the interactive lamp beads; the power supply unit is used to provide electrical energy for the control unit and the execution unit.

[0037] As a preferred embodiment of the present invention, the automotive interactive lamp fault diagnosis system further includes a communication unit, and the communication unit communicates with the control unit through a network to receive external network signals.

[0038] As an embodiment of the present invention, the control unit of the present invention includes an open - circuit / short - circuit diagnosis module, a pixel self - diagnosis module, a host computer interaction module, a pixel self - repair module, an external network communication module, and a main control module. Refer to Figure 2 , wherein, the open - circuit / short - circuit diagnosis module is used to implement the open - circuit / short - circuit diagnosis of the interactive lamp beads in the execution unit; the pixel self - diagnosis module is used to implement the automatic diagnosis of the corresponding relationship between the pixel points of the interactive lamp beads in the execution unit and the channels of the driving chips in the driving unit; the host computer interaction module is used to feedback the diagnosis result information to the host computer unit; when the pixel self - diagnosis module diagnoses that the corresponding relationship between the pixel points of the interactive lamp beads in the execution unit and the channels of the driving chips in the driving unit is incorrect, it is used to write the correct data into the array of the pixel matrix; the external network communication module is used to receive external network instructions and feedback the diagnosis result information; the main control module is used to realize functional interaction with the open - circuit / short - circuit diagnosis module, the pixel self - diagnosis module, the host computer interaction module, the pixel self - repair module, and the external network communication module.

[0039] As a preferred embodiment of the present invention, the control unit further includes a storage module, which is used to store the repaired array.

[0040] On the other hand, the present invention discloses an automobile interactive lamp fault diagnosis method. Refer to Figure 3 , including the following steps:

[0041] S1: Initialize to ensure that there are no open - circuit or short - circuit faults in the interactive lamp beads in the execution unit, and turn off all pixels of the interactive lamp beads;

[0042] S2: Receive an external network signal;

[0043] Specifically, receive the external network signal by means of interruption or polling;

[0044] S3: Judge whether fault diagnosis is required. If so, execute S4; if not, execute S2;

[0045] S4: Turn on the first pixel in the execution unit;

[0046] S5: Read the channel voltage value correctly corresponding to the first pixel;

[0047] S6: Judge whether the read voltage value is correct. If correct, execute S7; if incorrect, execute S9;

[0048] S7: Record the mapping result of the first pixel as correct;

[0049] S8: Turn off the first pixel;

[0050] S9: Read the voltage values of other channels in turn and compare them with the voltage curve;

[0051] S10: Set the channels that match the voltage curve as the correctly corresponding channels;

[0052] S11: Update the position of the first pixel in the pixel array;

[0053] S12: Store the updated pixel array in Flash;

[0054] S13: Complete the diagnosis of other pixels in sequence according to the above steps;

[0055] S14: Feed back the diagnosis result information to the host unit and the external network.

[0056] The vehicle interactive lamp fault diagnosis system and diagnosis method disclosed by the present invention ensure the correct correspondence between the interactive lamp pixel points and the channels of the driving chip through the automatic diagnosis of the interactive lamp pixel points and the chip channels; the pixel automatic diagnosis is turned on / off through an external network instruction without affecting the normal function of the lamp; when it is diagnosed that the correspondence between the interactive lamp pixel and the channel of the driving chip is incorrect, the correct array is saved to Flash in an automatic repair manner, and the incorrect data is automatically replaced, saving the software development cycle; through the fault diagnosis system and method disclosed by the present invention, it can ensure that the intelligent interactive lamp displays correct pictures and animations.

[0057] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0058] The above embodiments are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An automotive interactive lamp fault diagnosis system, characterized in that, Including: A host computer unit for receiving an external fault diagnosis control command and sending the received fault diagnosis control command to the control unit; A control unit for receiving the fault diagnosis control command sent by the host computer unit, diagnosing the driving function and faults of the driving unit according to the received fault diagnosis control command, and feeding back the diagnosis result information to the host computer unit; A driving unit for receiving and executing the fault diagnosis control command sent by the control unit, and sending a driving command to the execution unit according to the fault diagnosis control command; An execution unit for receiving and executing the driving command sent by the driving unit to realize the on / off and grayscale control of the execution unit; A power supply unit for supplying electrical energy to the control unit and the execution unit; The control unit includes: An open / short circuit diagnosis module for realizing the open / short circuit diagnosis of the interactive lamp beads in the execution unit; A pixel self-diagnosis module for realizing the automatic diagnosis of the corresponding relationship between the pixel points of the interactive lamp beads in the execution unit and the channels of the driving chips in the driving unit; A host computer interaction module for feeding back the diagnosis result information to the host computer unit; A pixel self-repair module for writing correct data into the array of the pixel matrix when the pixel self-diagnosis module diagnoses that the corresponding relationship between the pixel points of the interactive lamp beads in the execution unit and the channels of the driving chips in the driving unit is incorrect; An external network communication module for receiving external network instructions and feeding back diagnosis result information; A main control module for realizing functional interaction with the open / short circuit diagnosis module, pixel self-diagnosis module, host computer interaction module, pixel self-repair module and external network communication module.

2. The automotive interactive lamp fault diagnosis system according to claim 1, wherein, It further includes a communication unit, and the communication unit performs network communication with the control unit.

3. The automotive interactive lamp fault diagnosis system according to claim 1, characterized in that The execution unit includes a plurality of interactive lamp beads.

4. The automotive interactive lamp fault diagnosis system according to claim 1, characterized in that The control unit realizes communication with the host computer unit through a CAN or RS232 or Ethernet interface.

5. The automotive interactive lamp fault diagnosis system according to claim 4, wherein, It further includes a storage module for storing the repaired array.

6. A method for diagnosing faults in automotive interactive lights, characterized in that, This automotive interactive lamp fault diagnosis method is applied to the automotive interactive lamp fault diagnosis system according to any one of claims 1-5 above; This automotive interactive lamp fault diagnosis method includes the following steps: S1: Initialization, ensuring that there are no open or short circuit faults in the interactive lamp beads in the execution unit, and turning off all pixels of the interactive lamp beads; S2: Receiving an external network signal; S3: Judging whether fault diagnosis is required. If so, execute S4; if not, execute S2; S4: Turning on the first pixel in the execution unit; S5: Reading the channel voltage value correctly corresponding to the first pixel; S6: Judging whether the read voltage value is correct. If so, execute S7; if not, execute S9; S7: Recording the mapping result of the first pixel as correct; S8: Turning off the first pixel; S9: Sequentially reading the voltage values of other channels and comparing them with the voltage curve; S10: Setting the channels that conform to the voltage curve as the correctly corresponding channels; S11: Updating the position of the first pixel in the pixel array; S12: Storing the updated pixel array into Flash; S13: Complete the diagnosis of other pixels in sequence according to the above steps; S14: Feed back the diagnosis result information to the host computer unit and the external network.

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