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CN-121989801-A - Fault diagnosis device and method for vehicle steering lamp, vehicle and computer readable storage medium

CN121989801ACN 121989801 ACN121989801 ACN 121989801ACN-121989801-A

Abstract

The application relates to the technical field of vehicles, and discloses a fault diagnosis device and method for a vehicle turn signal lamp, a vehicle and a computer readable storage medium. The fault diagnosis device comprises a plurality of steering lamps which are arranged in a matrix mode and comprise at least two columns and at least two rows, wherein each column comprises at least two steering lamps, each column corresponds to the same steering side, each row comprises at least two steering lamps, a whole vehicle controller comprises a plurality of steering signal interfaces and a plurality of diagnosis signal interfaces, the plurality of steering signal interfaces are correspondingly arranged with the steering lamps of the at least two columns, each steering signal interface is connected to a control input end of the steering lamp of the corresponding column so that each column of steering lamps share the same steering signal, the plurality of diagnosis signal interfaces are correspondingly arranged with the steering lamps of the at least two rows, and each diagnosis signal interface is connected to a diagnosis feedback output end of each column of steering lamps in the corresponding row so that each row of steering lamps share the same diagnosis signal. Thus, the number of the wire harnesses is reduced, and the diagnosis resolution precision of the steering lamp is improved.

Inventors

  • LUO YUTING
  • ZHOU RUZHONG

Assignees

  • 重庆长安汽车股份有限公司

Dates

Publication Date
20260508
Application Date
20260319

Claims (11)

  1. 1. A fault diagnosis device of a vehicle turn signal lamp, characterized by comprising: The steering lamps are arranged in a matrix mode and comprise at least two columns and at least two rows, wherein each column comprises at least two steering lamps, each column corresponds to the same steering side, and each row comprises at least two steering lamps; The vehicle control unit comprises a plurality of steering signal interfaces and a plurality of diagnosis signal interfaces, wherein the plurality of steering signal interfaces are correspondingly arranged with at least two rows of steering lamps, each steering signal interface is connected to the control input end of the corresponding row of steering lamps so that each row of steering lamps share the same steering signal, the plurality of diagnosis signal interfaces are correspondingly arranged with at least two rows of steering lamps, and each diagnosis signal interface is connected to the diagnosis feedback output end of each row of steering lamps in the corresponding row so that each row of steering lamps share the same diagnosis signal.
  2. 2. The apparatus of claim 1, wherein the overall vehicle controller is configured to: In response to a diagnosis request of a target steering side, a steering control signal is output through the steering signal interface corresponding to the target steering side, and a diagnosis enable signal is simultaneously output through the plurality of diagnosis signal interfaces.
  3. 3. The apparatus of claim 1, wherein the device comprises a plurality of sensors, The inside of each steering lamp is integrated with a diagnosis circuit for detecting the working state of the steering lamp and a feedback circuit for outputting a diagnosis result; The feedback circuit is configured to control the level on a diagnosis signal interface connected with the steering lamp based on the working state of the steering lamp, and the working state is determined based on the diagnosis circuit.
  4. 4. The apparatus of claim 3, wherein the feedback circuit is further configured to: under the condition that the working state of the steering lamp is normal, adjusting a diagnosis enabling signal on a diagnosis signal interface connected with the steering lamp to a preset level; and under the condition that the working state of the steering lamp is a fault state, the level on the diagnosis signal interface connected with the steering lamp is kept unchanged.
  5. 5. A fault diagnosis method of a vehicle turn signal, characterized in that the diagnosis method comprises: determining a target steering side corresponding to a turn signal starting request in response to the turn signal starting request; outputting a steering control signal to at least one steering lamp of the target steering side through a steering signal interface corresponding to the target steering side; outputting diagnosis enabling signals through a plurality of diagnosis signal interfaces respectively so as to enable each steering lamp on the target steering side to start diagnosis, and determining level signals connected with the plurality of diagnosis signal interfaces; collecting level signals on each diagnosis signal interface in a preset diagnosis feedback time period; and determining the working state of each steering lamp on the target steering side according to the collected level signals, wherein the working state comprises a normal state or a fault state.
  6. 6. The method of claim 5, wherein the step of initiating diagnostics for each turn signal on the target turning side comprises: detecting the working parameters of the steering lamp; Under the condition that the working parameters meet the normal conditions of the steering lamp, a diagnosis enabling signal connected to the diagnosis signal interface is adjusted to a preset level through a feedback circuit; And under the condition that the working parameters do not meet the normal conditions of the steering lamp, the level of the diagnosis enabling signal connected to the diagnosis signal interface is kept unchanged through the feedback circuit.
  7. 7. The method of claim 5, wherein the step of collecting the level signal on each of the diagnostic signal interfaces during a predetermined diagnostic feedback period comprises: determining a signal acquisition stage; And in the signal acquisition stage, respectively sampling the level signals on each diagnosis signal interface at least once according to a preset sampling period.
  8. 8. The method according to claim 7, wherein the step of determining the operating state of each turn signal on the target turning side based on the collected level signal includes: for each diagnosis signal interface, if signal level change exists in at least one sampling, judging that the working state of a steering lamp corresponding to the diagnosis signal interface is a normal state; And if the signal level in at least one sampling is kept unchanged all the time, judging that the working state of the turn signal corresponding to the diagnosis signal interface is a fault state.
  9. 9. The method according to any one of claims 5 to 8, further comprising: and if the working state of the turn signal lamp at the target turning side is determined to be a fault state, executing at least one of the following processing modes: the turn signal lamp on the fault side is controlled to flash according to a preset frequency, or, And sending a turn signal fault signal to an intelligent driving controller of the vehicle.
  10. 10. A vehicle, characterized by comprising: a vehicle body; the fault diagnosis device for a vehicle turn signal lamp according to any one of claims 1 to 4, mounted to a vehicle body.
  11. 11. A computer-readable storage medium storing program instructions that, when executed, cause a computer to perform the fault diagnosis method of the vehicle turn lamp according to any one of claims 5 to 9.

Description

Fault diagnosis device and method for vehicle steering lamp, vehicle and computer readable storage medium Technical Field The present application relates to the field of vehicle turn signal fault diagnosis technology, and for example, to a fault diagnosis device and method for a vehicle turn signal, a vehicle, and a computer-readable storage medium. Background With the development of electric and intelligent vehicles, LED turn lamps have become a mainstream configuration due to their low power consumption, long service life and other advantages. However, the working current of the LED steering lamp is small, the fault mode is various, and the conventional diagnosis mode based on current detection is difficult to meet the requirement of accurate positioning, so that the scheme of independently setting fault feedback lines for each steering lamp is adopted at present, and the controller collects electric signals for diagnosis through the feedback lines respectively. Although the scheme can realize accurate positioning, the scheme needs to occupy a plurality of I/O interfaces of the controller, and has the defects of numerous wire harnesses and high cost. In the fault diagnosis of the steering lamp in the related art, the feedback signals of the left front lamp and the left rear lamp are combined in the lamp to output a single left feedback signal, so that the controller can only know that a fault exists on one side, and cannot locate the position of a specific fault lamp, thereby having low maintenance efficiency. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows. The embodiment of the disclosure provides a fault diagnosis device and method of a vehicle steering lamp, a vehicle and a computer readable storage medium, so as to solve the technical problem that the position of a specific fault lamp cannot be positioned. In some embodiments, a fault diagnosis device for vehicle turn lamps is provided, which comprises a plurality of turn lamps arranged in a matrix manner and comprises at least two columns and at least two rows, wherein each column comprises at least two turn lamps, each column corresponds to the same turning side, each row comprises at least two turn lamps, a whole vehicle controller comprises a plurality of turn signal interfaces and a plurality of diagnosis signal interfaces, the plurality of turn signal interfaces are arranged corresponding to the turn lamps of the at least two columns, each turn signal interface is connected to a control input end of the turn lamp of the corresponding column so that each column of turn lamps share the same turn signal, the plurality of diagnosis signal interfaces are arranged corresponding to the turn lamps of the at least two rows, and each diagnosis signal interface is connected to a diagnosis feedback output end of each turn lamp of the corresponding row so that each row of turn lamps share the same diagnosis signal. The embodiment provides a fault diagnosis device for vehicle steering lamps, each row of steering lamps corresponds to the same steering side and is controlled by the same steering signal interface, so that synchronous triggering of the steering lamps at one side can be realized, and the consistency of steering signals is ensured. Each row of steering lamps share the same diagnosis signal interface, and the whole vehicle controller can obtain the working states of all columns of steering lamps in the same row in batches through the diagnosis interfaces. Meanwhile, the specific position of the fault steering lamp can be rapidly positioned by combining matrix positioning of rows and columns and determining the intersection point of the fault row and the corresponding steering side column, so that the fault checking efficiency is improved, and the maintenance cost is reduced. Therefore, the control signals are shared according to the sides, the diagnosis signals are shared according to the positions, the length of the wire harness and the number of the terminals of the connector are obviously reduced, the wire harness cost and the layout complexity of the whole vehicle are reduced, the occupation of the pins of the controller is reduced, and the hardware cost of the controller is reduced. Alternatively, the vehicle controller is configured to output a steering control signal through a steering signal interface corresponding to the target steering sid