CN116572838A - Fault detection method and device for electronic exterior rearview mirror system - Google Patents
Fault detection method and device for electronic exterior rearview mirror system Download PDFInfo
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- CN116572838A CN116572838A CN202310803745.0A CN202310803745A CN116572838A CN 116572838 A CN116572838 A CN 116572838A CN 202310803745 A CN202310803745 A CN 202310803745A CN 116572838 A CN116572838 A CN 116572838A
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- 238000000034 method Methods 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 18
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/16—Type of output information
- B60K2360/178—Warnings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Multimedia (AREA)
- Automation & Control Theory (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The application discloses a fault detection method and device of an electronic exterior rearview mirror system, which sequentially carry out fault detection according to the detection priority of fault events in each fault type of the electronic exterior rearview mirror system, wherein the detection priority is set from large to small according to the influence range of the fault events; and determining to report the fault to a background management system or to remind the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic exterior rearview mirror. According to the fault event priority, fault detection is carried out, maintenance personnel can be helped to carry out fault locking fast when faults occur, the maintenance efficiency of a vehicle is improved, different reminding modes are selected according to the fault time level, the interference of fault reminding on normal running of a driver can be reduced, and the driving safety is improved.
Description
Technical Field
The application relates to the technical field of fault detection, in particular to a fault detection method and device of an electronic exterior rearview mirror system.
Background
With the development of the intellectualization of automobiles, electronic exterior rearview mirrors are becoming more popular, and the electronic exterior rearview mirrors are gradually used for replacing traditional mechanical rearview mirrors and are carried on more vehicles. Compared with the traditional mechanical external rearview mirror, the electronic external rearview mirror is introduced with modules such as a camera, a display screen and a controller, and the structure and the operation mode of the electronic external rearview mirror are more complex than those of the traditional mechanical rearview mirror, so that the failure frequency of the electronic external rearview mirror is higher, and the failure mode is more complex. Complicated failure modes often affect the determination of maintenance personnel, so that the maintenance personnel are difficult to quickly and accurately locate the failure when the electronic exterior rearview mirror fails.
Therefore, how to perform fault detection on the electronic exterior mirror system so as to realize rapid and accurate fault positioning is a technical problem to be solved.
Disclosure of Invention
The application mainly aims to provide a fault detection method and device for an electronic exterior rearview mirror system, and aims to solve the technical problems that the fault mode of the electronic exterior rearview mirror is complex, and when the electronic exterior rearview mirror breaks down, the fault is difficult to quickly and accurately locate.
In a first aspect, the present application provides a method for detecting a fault in an electronic exterior mirror system, the method comprising the steps of:
sequentially performing fault detection according to the detection priority of fault events in each fault type of the electronic exterior rearview mirror system, wherein the detection priority is set from large to small according to the influence range of the fault events;
and determining to report the fault to a background management system or to remind the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic exterior rearview mirror.
In some embodiments, the fault types include a communication fault, a camera fault, and a display screen fault, and the fault detection is sequentially performed according to a detection priority of a fault event in each fault type of the electronic exterior mirror system, including:
and sequentially performing fault detection according to the detection priority of fault events in the communication faults, the camera faults and the display screen faults of the electronic exterior rearview mirror system.
In some embodiments, the fault detection is sequentially performed according to the detection priority of the fault event in each fault type of the electronic exterior mirror system, and further includes:
after detecting the fault event, fault detection is stopped.
In some embodiments, the detecting the faults sequentially according to the detection priority of the fault event in the communication faults of the electronic outside mirror system includes:
and detecting whether the CAN bus has a fault, if so, stopping detection, otherwise, detecting whether the bus node has the fault.
In some embodiments, the fault detection is sequentially performed according to a detection priority of a fault event in a camera fault of the electronic exterior rearview mirror system, including:
detecting whether the power supply of the camera has a fault, if so, stopping detection, otherwise, detecting whether the data code of the camera has a fault;
if the camera data code has a fault, stopping detecting, otherwise, detecting whether the camera state has the fault;
if the state of the camera has a fault, stopping detection, otherwise, detecting the shooting frame rate of the camera;
if the shooting frame rate is smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, stopping detection;
if the shooting frame rate is smaller than the first preset frame rate and larger than the second preset frame rate, stopping detection;
if the shooting frame rate is smaller than or equal to the second preset frame rate, restarting the electronic outside rear view mirror system, and detecting the shooting frame rate again after restarting;
if the shooting frame rate is still smaller than or equal to the second preset shooting frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image;
wherein the first preset frame rate is greater than the second preset frame rate.
In some embodiments, the fault detection is sequentially performed according to a detection priority of a fault event in a display screen fault of the electronic exterior rear view mirror system, including:
detecting whether the display screen data decoding has a fault or not, if yes, stopping detection, otherwise, detecting whether the display screen state has the fault or not;
if the state of the stored display screen has a fault, stopping detection, otherwise, detecting the display frame rate of the display screen;
if the display frame rate is smaller than the calibrated display frame rate and greater than or equal to a third preset frame rate, stopping detection;
if the display frame rate is smaller than the third preset frame rate and larger than the fourth preset frame rate, stopping detection;
if the display frame rate is smaller than or equal to the fourth preset frame rate, restarting the electronic outside rear view mirror system, and detecting the display frame rate again after restarting;
if the display frame rate is still smaller than or equal to the fourth preset frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image;
wherein the third preset frame rate is greater than the fourth preset frame rate.
In some embodiments, setting the fault level according to whether the fault event affects the view of the electronic outside rear view mirror includes:
if the fault event does not affect the picture of the electronic rearview mirror, setting the fault grade as a first-level fault;
if the fault event affects the picture of the electronic rearview mirror, setting the fault grade as a secondary fault;
the CAN bus fault, the bus node fault and the shooting frame rate are smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, and the display frame rate is smaller than the calibrated display frame rate and larger than or equal to the third preset frame rate, so that the CAN bus fault, the bus node fault and the shooting frame rate are primary faults;
the camera power failure, the camera data encoding failure, the camera state failure, the shooting frame rate being smaller than the first preset frame rate and larger than the second preset frame rate, the shooting frame rate being smaller than or equal to the second preset frame rate, the display screen data decoding failure, the display frame rate being smaller than the third preset frame rate and larger than the fourth preset frame rate, the display screen state failure and the display frame rate being smaller than or equal to the fourth preset frame rate, is a secondary failure.
In some embodiments, determining to report the fault to the background management system or to alert the fault on the meter according to the fault level of the detected fault event includes:
if the level of the fault event is a first-level fault, reporting the fault to a background management system;
and if the level of the fault event is a secondary fault, carrying out fault reminding on the instrument.
In some embodiments, before performing the fault detection in sequence according to the detection priority of the fault event in the communication fault, the camera fault and the display screen fault of the electronic exterior rearview mirror system, the method further includes:
performing fault detection on the whole vehicle voltage;
if the voltage faults exist, the voltage faults are reminded on the instrument, and fault detection is stopped.
In a second aspect, the present application also provides a fault detection device for an electronic exterior mirror system, the device comprising:
the detection module is used for sequentially carrying out fault detection according to the detection priority of the fault event in each fault type of the electronic outside rear view mirror system, wherein the detection priority is set from large to small according to the influence range of the fault event;
and the processing module is used for determining to report the fault to the background management system or prompting the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic outside rear view mirror.
The application provides a fault detection method and device of an electronic exterior rearview mirror system, which sequentially carry out fault detection according to the detection priority of fault events in each fault type of the electronic exterior rearview mirror system, wherein the detection priority is set from large to small according to the influence range of the fault events; and determining to report the fault to a background management system or to remind the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic exterior rearview mirror. According to the fault event priority, fault detection is carried out, maintenance personnel can be helped to carry out fault locking fast when faults occur, the maintenance efficiency of a vehicle is improved, different reminding modes are selected according to the fault time level, the interference of fault reminding on normal running of a driver can be reduced, and the driving safety is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a fault detection method of an electronic exterior mirror system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a communication fault detection flow;
FIG. 3 is a schematic diagram of a camera-based fault detection process;
FIG. 4 is a schematic diagram of a display screen type fault detection process;
FIG. 5 is a schematic diagram of a voltage fault detection flow of the electronic outside mirror system;
fig. 6 is a schematic block diagram of a fault detection device of an electronic outside mirror system according to an embodiment of the present application.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
The embodiment of the application provides a fault detection method and device for an electronic exterior rearview mirror system. The fault detection method of the electronic exterior rearview mirror system can be applied to computer equipment, and the computer equipment can be a whole vehicle controller or a vehicle-mounted computer and other equipment.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a flow chart of a fault detection method of an electronic outside mirror system according to an embodiment of the application.
As shown in fig. 1, the overall idea of the method includes steps S1 to S2.
And S1, sequentially performing fault detection according to the detection priority of the fault event in each fault type of the electronic outside rear view mirror system, wherein the detection priority is set from large to small according to the influence range of the fault event.
And S2, determining to report the fault to a background management system or to remind the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic outside rear view mirror.
It should be noted that, the fault types include a communication fault, a camera fault and a display screen fault, and the method further includes: and sequentially performing fault detection according to the detection priority of fault events in the communication faults, the camera faults and the display screen faults of the electronic exterior rearview mirror system.
Specifically, the communication faults include CAN bus faults and bus node faults; the camera type faults comprise a camera power failure, a camera data coding failure, a camera state failure and a shooting frame rate which is smaller than a calibrated shooting frame rate and larger than or equal to a first preset frame rate, a shooting frame rate which is smaller than the first preset frame rate and larger than a second preset frame rate, and a shooting frame rate which is smaller than or equal to the second preset frame rate; the display screen type faults comprise display screen data decoding faults, display screen state faults and display frame rates, wherein the display frame rates are smaller than the calibrated display frame rate and larger than or equal to a third preset frame rate, the display frame rates are smaller than the third preset frame rate and larger than a fourth preset frame rate, and the display frame rates are smaller than or equal to the fourth preset frame rate.
It is worth to say that, if the fault event does not affect the picture of the electronic rearview mirror, the fault grade is set as a first-level fault; if the fault event affects the picture of the electronic rearview mirror, setting the fault grade as a secondary fault; the CAN bus fault, the bus node fault and the shooting frame rate are smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, and the display frame rate is smaller than the calibrated display frame rate and larger than or equal to the third preset frame rate, so that the CAN bus fault, the bus node fault and the shooting frame rate are primary faults; the camera power failure, the camera data encoding failure, the camera state failure, the shooting frame rate being smaller than the first preset frame rate and larger than the second preset frame rate, the shooting frame rate being smaller than or equal to the second preset frame rate, the display screen data decoding failure, the display frame rate being smaller than the third preset frame rate and larger than the fourth preset frame rate, the display screen state failure and the display frame rate being smaller than or equal to the fourth preset frame rate, is a secondary failure.
Further, determining to report the fault to the background management system or to prompt the fault on the meter according to the fault level of the detected fault event includes: if the level of the fault event is a first-level fault, reporting the fault to a background management system; and if the level of the fault event is a secondary fault, carrying out fault reminding on the instrument. It should be understood that the first-level fault is a fault which does not affect the picture of the electronic rearview mirror, so that the normal driving of the vehicle is not affected, and therefore, a message can be sent to a 4s store or a service provider through a background management system to record the fault, and the 4s store or the service provider judges whether to contact the user of the vehicle for maintenance according to the reported fault. Therefore, the interference of faults on normal driving can be reduced, development and after-sales personnel can be facilitated to rapidly locate faults of the external rearview mirror system, and follow-up maintenance is facilitated. The secondary fault is a fault affecting the picture of the electronic rearview mirror, and possibly affecting the safe driving of the vehicle, so that a driver is reminded of the quick maintenance treatment through an instrument, and the driving safety is ensured.
Specifically, fault detection is sequentially performed according to a detection priority of a fault event in a communication fault of the electronic exterior rear view mirror system, including: and detecting whether the CAN bus has a fault, if so, stopping detection, otherwise, detecting whether the bus node has the fault. Because CAN bus failure CAN cause all bus nodes to fail to work properly, CAN bus failure priority is higher.
As shown in fig. 2, when the electronic outside rear view mirror system starts to operate, firstly detecting whether a CAN bus has a fault or not, if so, not performing next fault diagnosis, and reporting the CAN bus fault to a background management system; and when the CAN bus fault does not exist, performing next-step bus node fault detection, and if the bus node fault is detected, reporting the bus node fault to a background management system. If the bus node also has no fault, the electronic outside rear-view mirror can be ensured to have no communication fault. Because bus faults do not affect the mirror image and display screen to divide the fault into primary faults.
Specifically, fault detection is sequentially performed according to a detection priority of a fault event in a camera fault of the electronic exterior rear view mirror system, including: detecting whether the power supply of the camera has a fault, if so, stopping detection, otherwise, detecting whether the data code of the camera has a fault; if the camera data code has a fault, stopping detecting, otherwise, detecting whether the camera state has the fault; if the state of the camera has a fault, stopping detection, otherwise, detecting the shooting frame rate of the camera; if the shooting frame rate is smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, stopping detection; stopping detection if the shooting frame rate is smaller than a first preset frame rate and larger than a second preset frame rate, restarting the electronic outside rear-view mirror system if the shooting frame rate is smaller than or equal to the second preset frame rate, and detecting the shooting frame rate again after restarting; if the shooting frame rate is still smaller than or equal to the second preset shooting frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image; wherein the first preset frame rate is greater than the second preset frame rate.
Exemplary, as shown in fig. 3, when the electronic exterior mirror system is in a normal running state, the camera is detected by the camera fault detection program to determine whether a power fault exists in the camera, if the power fault exists in the camera, other fault detection can not be performed any more, because the camera can not start photographing when the power fault exists in the camera, a rearview picture can not be displayed, and the driving of a driver can be directly influenced, therefore, the power fault of the camera belongs to a secondary fault, and the system can prompt the fault on an instrument to prompt the driver to pay attention and maintain in time. When the camera does not have power failure, can detect whether the data coding of camera is normal, if there is data coding trouble, just no longer carry out next fault detection, because camera data coding trouble can lead to the picture that the camera shot can not be transmitted, leads to the back vision picture unable to show, can directly influence driver's traveling, consequently belongs to the second grade trouble, carries out the trouble on the system can instrument and reminds. When the camera has no data coding fault, whether the state of the camera is normal is detected, wherein the state of the camera comprises the states of the shielded camera, dirty camera and the like. If the state of the camera is faulty, the next fault detection can not be performed, and the camera can not shoot a rearview picture due to the fact that the camera is shielded, so that the camera belongs to a secondary fault.
When the camera has no state fault, whether the frame rate of the camera is normal is detected. In this embodiment, the first preset frame rate is 30 frames, and the second preset frame rate is 20 frames. When the frame rate of the camera is smaller than the calibrated shooting frame rate but larger than or equal to 30 frames, the shot rearview picture can not judge the rearview traffic environment by a user, so that the camera is in primary failure, and a message is sent to a 4s store or a service provider for processing through a background, so that the use of the user is not affected. If the frame rate of the camera is less than 30 frames but greater than 20 frames, the rearview picture is blocked at the moment, and the picture update is possibly not timely, so that the secondary fault is determined at the moment, and the safety is reminded to the driver by carrying out fault reminding on the instrument. When the frame rate is lower than or equal to 20 frames, which indicates that the picture is blocked seriously, the running of a driver can be directly affected, and at the moment, the electronic outside rear-view mirror system is controlled to restart so as to eliminate the condition that the frame rate of the camera is reduced due to the system, and when the electronic outside rear-view mirror system is restarted successfully, the shooting frame rate of the camera is detected again; if the shooting frame rate is still lower than or equal to 20 frames, the electronic outside rearview mirror system can analyze and detect each frame of picture, detect whether a vehicle exists in the image, if the vehicle exists, carry out fault reminding on an instrument screen of the vehicle, display lane changing danger and pay attention to information such as a following vehicle.
Specifically, fault detection is sequentially performed according to a detection priority of a fault event in a display screen fault of the electronic exterior rear view mirror system, including: detecting whether the display screen data decoding has a fault or not, if yes, stopping detection, otherwise, detecting whether the display screen state has the fault or not; if the state of the stored display screen has a fault, stopping detection, otherwise, detecting the display frame rate of the display screen; if the display frame rate is smaller than the calibrated display frame rate and greater than or equal to a third preset frame rate, stopping detection; stopping detection if the display frame rate is smaller than a third preset frame rate and larger than a fourth preset frame rate, restarting the electronic outside rear-view mirror system if the display frame rate is smaller than or equal to the fourth preset frame rate, and detecting the display frame rate again after restarting; if the display frame rate is still smaller than or equal to the fourth preset frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image; wherein the third preset frame rate is greater than the fourth preset frame rate.
Exemplary, as shown in fig. 4, when the system is in a normal running state, it is detected whether the data decoding of the display screen is normal, if there is a data decoding failure, the next failure detection is not performed any more, because the display screen data decoding failure can cause that the picture shot by the camera cannot be displayed, and the driving of the driver can be directly affected, thus the system belongs to a secondary failure, and the system can perform failure reminding on the instrument. When the display screen has no data coding fault, whether the display screen is in a normal state or not is detected, wherein the display screen state comprises states such as display screen blackout and the like. If the display screen state faults exist, the next fault detection can not be performed, and the rear-view picture can not be displayed due to the fact that the display screen is black, so that the display screen state faults belong to the second-level faults.
When the display screen has no state fault, whether the refresh frame rate of the display screen is normal or not is detected. In this embodiment, the third preset frame rate is 30 frames, and the fourth preset frame rate is 20 frames. When the frame rate of the display screen is smaller than the calibrated display frame rate but larger than or equal to 30 frames, the rearview picture displayed by the display screen can not judge the rearview traffic environment by a user, so that the display screen is a first-level fault, and a message is sent to a 4s store or a service provider for processing through a background, so that the use of the user is not affected. If the display frame rate is less than 30 frames but greater than 20 frames, the displayed rearview picture is blocked, and the picture update is possibly not timely, so that the secondary fault is determined at the moment, and the safety is reminded to the driver by carrying out fault reminding on the instrument. When the display frame rate is lower than or equal to 20 frames, the display frame rate is seriously blocked, the running of a driver can be directly influenced, at the moment, the electronic outside rear-view mirror system is controlled to restart, so that the condition that the display frame rate is reduced due to the system is eliminated, and when the electronic outside rear-view mirror system is restarted successfully, the display frame rate is detected again; if the display frame rate is still lower than or equal to 20 frames, the electronic outside rear view mirror system can analyze and detect each frame of picture, detect whether a vehicle exists in the image, if the vehicle exists, the electronic outside rear view mirror system can carry out fault reminding on an instrument of the vehicle, display lane changing danger and pay attention to information such as a vehicle coming from the rear.
Preferably, before the fault detection is sequentially performed according to the detection priority of the fault event in the communication fault, the camera fault and the display screen fault of the electronic exterior rear view mirror system, the method further comprises: performing fault detection on the voltage of the electronic exterior rearview mirror system; if the voltage faults exist, the voltage faults are reminded on the instrument, and fault detection is stopped. As shown in fig. 5, the specific diagnostic logic is as follows, when the electronic exterior mirror system is started, the system will detect whether the electronic exterior mirror system has a voltage fault, if no voltage fault exists, then the subsequent communication fault, camera fault and display screen detection are performed, if the electronic exterior mirror system has a voltage fault, it may cause the communication module, the camera and the display of the electronic exterior mirror to all show fault states, so that the subsequent fault detection is not performed any more.
The embodiment of the application provides a fault detection method of an electronic outside rear view mirror system, which can accurately detect faults with large influence range by dividing the priority of the fault level and then carrying out fault detection according to the priority, avoids false detection and false report of the faults, and is convenient for development and after-sales personnel to quickly locate the system faults. According to the fault event priority, fault detection is carried out, so that maintenance personnel can be helped to carry out fault locking rapidly when faults occur, the maintenance efficiency of a vehicle is improved, different reminding modes are selected according to the fault level, the interference of fault communication reminding on normal running of a driver can be reduced, and driving safety is guaranteed. According to the priority judgment of system fault detection, when faults occur, misjudgment cannot be generated on a series of faults, so that the problem handling speed of after-sales personnel is improved, and user complaints are reduced. In addition, under the condition of more faults, the priority of the faults is defined, and other faults can not be detected when the faults with higher priority occur, so that after-sales personnel can quickly lock the reasons of the faults.
Referring to fig. 6, fig. 6 is a schematic block diagram of a fault detection device of an electronic outside mirror system according to an embodiment of the present application.
As shown in fig. 6, the apparatus includes:
the detection module is used for sequentially carrying out fault detection according to the detection priority of the fault event in each fault type of the electronic outside rear view mirror system, wherein the detection priority is set from large to small according to the influence range of the fault event;
and the processing module is used for determining to report the fault to the background management system or prompting the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic outside rear view mirror.
Wherein the device is also used for: and sequentially performing fault detection according to the detection priority of fault events in the communication faults, the camera faults and the display screen faults of the electronic exterior rearview mirror system.
Wherein the device is also used for: after detecting the fault event, fault detection is stopped.
Wherein the device is also used for: and detecting whether the CAN bus has a fault, if so, stopping detection, otherwise, detecting whether the bus node has the fault.
Wherein the device is also used for: detecting whether the power supply of the camera has a fault, if so, stopping detection, otherwise, detecting whether the data code of the camera has a fault;
if the camera data code has a fault, stopping detecting, otherwise, detecting whether the camera state has the fault;
if the state of the camera has a fault, stopping detection, otherwise, detecting the shooting frame rate of the camera;
if the shooting frame rate is smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, stopping detection;
if the shooting frame rate is smaller than the first preset frame rate and larger than the second preset frame rate, stopping detection;
if the shooting frame rate is smaller than or equal to the second preset frame rate, restarting the electronic outside rear view mirror system, and detecting the shooting frame rate again after restarting;
if the shooting frame rate is still smaller than or equal to the second preset shooting frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image;
wherein the first preset frame rate is greater than the second preset frame rate.
Wherein the device is also used for: detecting whether the display screen data decoding has a fault or not, if yes, stopping detection, otherwise, detecting whether the display screen state has the fault or not;
if the state of the stored display screen has a fault, stopping detection, otherwise, detecting the display frame rate of the display screen;
if the display frame rate is smaller than the calibrated display frame rate and greater than or equal to a third preset frame rate, stopping detection;
if the display frame rate is smaller than the third preset frame rate and larger than the fourth preset frame rate, stopping detection;
if the display frame rate is smaller than or equal to the fourth preset frame rate, restarting the electronic outside rear view mirror system, and detecting the display frame rate again after restarting;
if the display frame rate is still smaller than or equal to the fourth preset frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image;
wherein the third preset frame rate is greater than the fourth preset frame rate.
If the fault event does not affect the picture of the electronic rearview mirror, setting the fault grade as a first-level fault;
if the fault event affects the picture of the electronic rearview mirror, setting the fault grade as a secondary fault;
the CAN bus fault, the bus node fault and the shooting frame rate are smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, and the display frame rate is smaller than the calibrated display frame rate and larger than or equal to the third preset frame rate, so that the CAN bus fault, the bus node fault and the shooting frame rate are primary faults;
the camera power failure, the camera data encoding failure, the camera state failure, the shooting frame rate being smaller than the first preset frame rate and larger than the second preset frame rate, the shooting frame rate being smaller than or equal to the second preset frame rate, the display screen data decoding failure, the display frame rate being smaller than the third preset frame rate and larger than the fourth preset frame rate, the display screen state failure and the display frame rate being smaller than or equal to the fourth preset frame rate, is a secondary failure.
Wherein the device is also used for:
if the level of the fault event is a first-level fault, reporting the fault to a background management system;
and if the level of the fault event is a secondary fault, carrying out fault reminding on the instrument.
Wherein the device is also used for:
performing fault detection on the voltage of the electronic exterior rearview mirror system;
if the voltage faults exist, the voltage faults are reminded on the instrument, and fault detection is stopped.
It should be noted that, for convenience and brevity of description, specific working procedures of the above-described apparatus and each module and unit may refer to corresponding procedures in the foregoing embodiments, and are not repeated herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. A method for detecting a fault in an electronic outside mirror system, comprising:
sequentially performing fault detection according to the detection priority of fault events in each fault type of the electronic exterior rearview mirror system, wherein the detection priority is set from large to small according to the influence range of the fault events;
and determining to report the fault to a background management system or to remind the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic exterior rearview mirror.
2. The method for detecting a fault in an electronic outside mirror system according to claim 1, wherein the fault types include a communication fault, a camera fault, and a display screen fault, and the fault detection is sequentially performed according to a detection priority of a fault event in each fault type of the electronic outside mirror system, comprising:
and sequentially performing fault detection according to the detection priority of fault events in the communication faults, the camera faults and the display screen faults of the electronic exterior rearview mirror system.
3. The method for detecting a fault in an electronic outside mirror system according to claim 2, wherein the fault detection is sequentially performed according to a detection priority of a fault event in each fault type of the electronic outside mirror system, further comprising:
after detecting the fault event, fault detection is stopped.
4. A fault detection method for an electronic outside mirror system according to claim 3, wherein the fault detection is sequentially performed according to a detection priority of a fault event in a communication type fault of the electronic outside mirror system, comprising:
and detecting whether the CAN bus has a fault, if so, stopping detection, otherwise, detecting whether the bus node has the fault.
5. The method for detecting a fault in an electronic outside mirror system according to claim 4, wherein the sequentially performing the fault detection according to the detection priority of the fault event in the camera-like fault of the electronic outside mirror system comprises:
detecting whether the power supply of the camera has a fault, if so, stopping detection, otherwise, detecting whether the data code of the camera has a fault;
if the camera data code has a fault, stopping detecting, otherwise, detecting whether the camera state has the fault;
if the state of the camera has a fault, stopping detection, otherwise, detecting the shooting frame rate of the camera;
if the shooting frame rate is smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, stopping detection;
if the shooting frame rate is smaller than the first preset frame rate and larger than the second preset frame rate, stopping detection;
if the shooting frame rate is smaller than or equal to the second preset frame rate, restarting the electronic outside rear view mirror system, and detecting the shooting frame rate again after restarting;
if the shooting frame rate is still smaller than or equal to the second preset shooting frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image;
wherein the first preset frame rate is greater than the second preset frame rate.
6. The method for detecting a fault in an electronic outside mirror system according to claim 5, wherein the fault detection is sequentially performed according to a detection priority of a fault event in a display screen type fault of the electronic outside mirror system, comprising:
detecting whether the display screen data decoding has a fault or not, if yes, stopping detection, otherwise, detecting whether the display screen state has the fault or not;
if the state of the stored display screen has a fault, stopping detection, otherwise, detecting the display frame rate of the display screen;
if the display frame rate is smaller than the calibrated display frame rate and greater than or equal to a third preset frame rate, stopping detection;
stopping detection if the display frame rate is smaller than a third preset frame rate and larger than a fourth preset frame rate, restarting the electronic outside rear-view mirror system if the display frame rate is smaller than or equal to the fourth preset frame rate, and detecting the display frame rate again after restarting;
if the display frame rate is still smaller than or equal to the fourth preset frame rate after restarting, detecting whether a vehicle exists in an image shot by the camera frame by frame, and carrying out danger warning on an instrument when detecting that the vehicle exists in the image;
wherein the third preset frame rate is greater than the fourth preset frame rate.
7. The method of claim 6, wherein the setting the fault level according to whether the fault event affects the picture of the electronic outside mirror comprises:
if the fault event does not affect the picture of the electronic rearview mirror, setting the fault grade as a first-level fault;
if the fault event affects the picture of the electronic rearview mirror, setting the fault grade as a secondary fault;
the CAN bus fault, the bus node fault and the shooting frame rate are smaller than the calibrated shooting frame rate and larger than or equal to the first preset frame rate, and the display frame rate is smaller than the calibrated display frame rate and larger than or equal to the third preset frame rate, so that the CAN bus fault, the bus node fault and the shooting frame rate are primary faults;
the camera power failure, the camera data encoding failure, the camera state failure, the shooting frame rate being smaller than the first preset frame rate and larger than the second preset frame rate, the shooting frame rate being smaller than or equal to the second preset frame rate, the display screen data decoding failure, the display frame rate being smaller than the third preset frame rate and larger than the fourth preset frame rate, the display screen state failure and the display frame rate being smaller than or equal to the fourth preset frame rate, is a secondary failure.
8. The method for detecting a fault in an electronic outside mirror system according to claim 7, wherein determining to report a fault to a background management system or to alert a meter of the fault according to a fault level of the detected fault event, comprises:
if the level of the fault event is a first-level fault, reporting the fault to a background management system;
and if the level of the fault event is a secondary fault, carrying out fault reminding on the instrument.
9. The method for detecting a failure of an electronic outside mirror system according to claim 2, further comprising, before sequentially performing failure detection according to a detection priority of a failure event among a communication-type failure, a camera-type failure, and a display-type failure of the electronic outside mirror system:
performing fault detection on the voltage of the electronic exterior rearview mirror system;
if the voltage faults exist, the voltage faults are reminded on the instrument, and fault detection is stopped.
10. A fault detection device for an electronic outside mirror system, comprising:
the detection module is used for sequentially carrying out fault detection according to the detection priority of the fault event in each fault type of the electronic outside rear view mirror system, wherein the detection priority is set from large to small according to the influence range of the fault event;
and the processing module is used for determining to report the fault to the background management system or prompting the fault on the instrument according to the fault level of the detected fault event, wherein the fault level is set according to whether the fault event affects the picture of the electronic outside rear view mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310803745.0A CN116572838A (en) | 2023-06-30 | 2023-06-30 | Fault detection method and device for electronic exterior rearview mirror system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310803745.0A CN116572838A (en) | 2023-06-30 | 2023-06-30 | Fault detection method and device for electronic exterior rearview mirror system |
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| CN116572838A true CN116572838A (en) | 2023-08-11 |
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| CN202310803745.0A Pending CN116572838A (en) | 2023-06-30 | 2023-06-30 | Fault detection method and device for electronic exterior rearview mirror system |
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| CN (1) | CN116572838A (en) |
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