CN113479136A - Display control method and device for digital rearview mirror system - Google Patents
Display control method and device for digital rearview mirror system Download PDFInfo
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- CN113479136A CN113479136A CN202110735610.6A CN202110735610A CN113479136A CN 113479136 A CN113479136 A CN 113479136A CN 202110735610 A CN202110735610 A CN 202110735610A CN 113479136 A CN113479136 A CN 113479136A
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- rearview mirror
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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
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/8046—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for replacing a rear-view mirror system
Abstract
The invention relates to the technical field of digital rearview mirror systems, in particular to a display control method and device of a digital rearview mirror system. The method comprises the following steps: judging whether a monitor of the digital rearview mirror has a display fault or not; and if so, transmitting the display image of the monitor of the digital rearview mirror to a central control screen for display. When the monitor of the digital rearview mirror has a display fault, the image information required to be displayed by the monitor can be transmitted to the in-vehicle central control screen for displaying in real time, so that the driver can accurately acquire the rearview information of the vehicle, the central control screen can still display the rear view field for the driver, the driving lane changing, turning and other operations are convenient, no time lag exists, and the driving safety of the vehicle is guaranteed.
Description
Technical Field
The invention relates to the technical field of digital rearview mirror systems, in particular to a display control method and device of a digital rearview mirror system.
Background
At present, most rearview mirrors of automobiles comprise mechanical rearview mirrors and digital rearview mirrors, the mechanical rearview mirrors adopt the principle of mirror surface imaging to feed back rear information of the automobiles, and the digital rearview mirrors adopt cameras and monitoring screens to replace traditional mechanical external rearview mirrors. Compared with the traditional mechanical rearview mirror, the digital rearview mirror adopts the digital image to replace the traditional mirror surface imaging, so that a larger visual field range can be obtained, and the driving safety is improved. However, if the digital rearview mirror fails, the driver cannot acquire the rear view, so that traffic accidents are caused, and the life safety of the driver and passengers is threatened.
Therefore, how to improve the safety of the digital rearview mirror system is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a display control method and a display control device of a digital rearview mirror system, so as to improve the safety of the digital rearview mirror system.
The embodiment of the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides a display control method for a digital rearview mirror system, including the following steps:
judging whether a monitor of the digital rearview mirror has a display fault or not;
and if so, transmitting the display image of the monitor of the digital rearview mirror to a central control screen for display.
In a possible embodiment, the determining whether a display failure occurs in a monitor of the digital rearview mirror includes:
and judging whether the monitor of the digital rearview mirror has display faults or not according to the current fault code information fed back by the monitor of the digital rearview mirror.
In a possible embodiment, the determining whether the display fault of the monitor of the digital rearview mirror occurs according to the current fault code information fed back by the monitor of the digital rearview mirror includes:
and judging whether the current fault code information comprises any one of the faults of an erasable memory, an input signal, a power supply, a low-voltage differential signal and a data transmission check fault, and if so, determining that the monitor of the digital rearview mirror has a display fault.
In a possible embodiment, the determining whether a display failure occurs in a monitor of the digital rearview mirror includes:
acquiring a first image of a target screen of a monitor containing the digital rearview mirror;
converting said first image into a YUV image;
judging whether the brightness information of the target screen area in the YUV image is smaller than a brightness threshold value;
if the digital rearview mirror is smaller than the preset threshold value, the display fault of the monitor of the digital rearview mirror is determined to occur.
In a possible embodiment, after the transmitting the display image of the monitor of the digital rearview mirror to the central control screen for display, the method further comprises:
and generating a first reminding instruction to send out a fault alarm to remind a driver that the monitor of the digital rearview mirror has a fault.
In a second aspect, an embodiment of the present invention provides a display control device for a digital rearview mirror system, the device including:
the first judgment module is used for judging whether a monitor of the digital rearview mirror has a display fault or not;
and the first control module is used for transmitting the display image of the monitor of the digital rearview mirror to the central control screen for display after the monitor has a display fault.
In a possible embodiment, the first determining module includes:
and the second judgment module is used for judging whether the monitor of the digital rearview mirror has display faults or not according to the current fault code information fed back by the monitor of the digital rearview mirror.
In a possible embodiment, the second determining module includes:
the third judging module is used for judging whether the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission verification faults;
and the first identification module is used for identifying that the monitor of the digital rearview mirror has display faults when the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission verification faults.
In a possible embodiment, the determining whether a display failure occurs in a monitor of the digital rearview mirror includes:
a first acquisition module for acquiring a first image of a target screen of a monitor including the digital rearview mirror;
the first processing module is used for converting the first image into a YUV image;
the fourth judging module is used for judging whether the brightness information of the target screen area in the YUV image is smaller than a brightness threshold value;
and the second determination module is used for determining that the monitor of the digital rearview mirror has display failure when the brightness information of the target screen area in the YUV image is less than the brightness threshold value.
In a possible embodiment, the apparatus further comprises:
and the first generation module is used for generating a first reminding instruction after the first control module works so as to send out a fault alarm and remind a driver that the monitor of the digital rearview mirror has a fault.
In a third aspect, an embodiment of the present invention provides an electronic device, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method as described in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the method described in the first aspect.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. by the processing method, when the monitor of the digital rearview mirror has a display fault, the image information required to be displayed by the monitor can be transmitted to the central control screen in the vehicle for display, so that the driver can accurately acquire the rearview information of the vehicle, the central control screen can still display the rear view field for the driver, the control of driving lane changing, turning and the like is facilitated, no lag exists in time, and the driving safety of the vehicle is guaranteed.
2. The hardware of the digital rearview mirror of the vehicle is not required to be modified, the manufacturing cost of the vehicle is not increased, and the large-scale industrial production application is facilitated; meanwhile, the existing vehicle is convenient to upgrade and reform, and the method has good applicability.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a display control method of a digital rearview mirror system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display control device of a digital rearview mirror system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
The present embodiment can be applied in a digital exterior mirror controller in a digital rear view mirror system.
Specifically, the digital rearview mirror system further comprises: the digital outer rearview mirror is respectively connected with the left digital rearview mirror, the left monitor, the right digital rearview mirror and the right monitor, so that the image acquired by the left digital rearview mirror is displayed on the left monitor, and the image acquired by the right digital rearview mirror is displayed on the right monitor.
In addition, the image output end of the digital exterior mirror controller is also connected with the image input end of the in-vehicle entertainment system controller through Ethernet, and the instruction communication end of the digital exterior mirror controller is also connected with the instruction communication end of the in-vehicle entertainment system controller through a CAN bus, so that the digital exterior mirror controller CAN display the images acquired by the left digital rear mirror and/or the right digital rear mirror on a central control screen in the in-vehicle entertainment system.
The digital exterior rearview mirror controller is integrated with I2C. The network cable and the CAN bus are respectively and correspondingly used for reading a register, transmitting image information and carrying out control interaction, the register is used for storing fault code information, and after receiving an instruction sent by the digital exterior mirror controller through the CAN bus, the in-vehicle entertainment system controller preferentially displays information output by an image output end of the digital exterior mirror controller according to priority ranking.
Referring to fig. 1, fig. 1 is a diagram illustrating a display control method of a digital rearview mirror system according to an embodiment of the present invention, which specifically includes steps 11 to 12.
And 11, judging whether the monitor of the digital rearview mirror has display faults or not.
Here, the monitor of the digital rear view mirror may be a left side monitor or a right side monitor in the digital exterior rear view mirror system.
In actual implementation, it is necessary to determine whether the vehicle is in a normal driving state before this step, for example, when an ACC (Accessory) power signal or an IGN (Ignition On) power signal is detected, the vehicle is considered to be in a normal driving state.
When the vehicle is in a normal driving state, the electronic exterior rear view mirror system can be in a normal working state, at the moment, the cameras in the left digital exterior rear view mirror and the right digital exterior rear view mirror in the digital exterior rear view mirror system start to acquire images and display the images on the corresponding left monitor and right monitor, so that a driver can conveniently acquire the rear view information to drive.
Here, two monitor failure determination schemes of the digital rear view mirror are provided.
The first scheme is a scheme for performing fault judgment by using current fault code information, and specifically includes step 21.
And step 21, judging whether the monitor of the digital rearview mirror has display faults or not according to the current fault code information fed back by the monitor of the digital rearview mirror.
Specifically, when the monitor of the digital rearview mirror is in fault, the monitor of the digital rearview mirror generates and feeds back the current fault code information, so that fault detection of the monitor of the digital rearview mirror can be realized according to the current fault code information fed back by the monitor of the digital rearview mirror.
Common current fault code information of monitors of digital rearview mirrors includes a pulse frequency modulation fault (PFM fault), a one-time program write fault (OTP fault), an erasable programmable read-only memory fault (EEPROM read fault), an input signal fault (input signals fault), a Gate control fault (Gate fault), a signal path fault (Source fault), a Power supply fault (Power fault), a low voltage differential signaling fault (LVDS fault), a data transmission check fault (CRC fault), and the like.
And if the current fault code information is judged to comprise any one of an erasable programmable read-only memory fault (EEPROM reload fault), an input signal fault (input signals fault), a Power fault (Power fault), a low voltage differential signaling fault (LVDS fault) and a data transmission check fault (CRC fault), determining that the corresponding digital rearview mirror has a display fault.
The second scheme is a scheme for performing fault judgment by using an image detection mode, and specifically includes steps 31 to 34.
Step 31, a first image of a target screen of a monitor comprising said digital rearview mirror is acquired.
In the embodiment, one or more in-vehicle cameras are further arranged in the vehicle, and a first image of a target screen of a monitor containing the digital rearview mirror can be acquired through the in-vehicle cameras.
Step 32, converting said first image into a YUV image.
The first image is usually acquired in an RGB (Red-Green-Blue color mode) image, and the step converts the first image into a YUV (Luminance-Bandwidth-Chrominance color mode) image, wherein a Y value of the YUV image indicates brightness, and UV commonly indicates chroma, so that the YUV image corresponding to the first image contains brightness information.
Step 33, judging whether the brightness information of the target screen area in the YUV image is less than the brightness threshold value.
When the monitor of the digital rearview mirror is in failure, the screen of the digital rearview mirror is normally completely black, and the brightness information of the digital rearview mirror is reduced relative to the surrounding, so that whether the monitor of the digital rearview mirror is in failure or not can be judged by comparing the brightness information of the target screen area in the YUV image.
The brightness information of the target screen area in the YUV image may be an accumulated value of the brightness information of all the pixel points in the target screen area, or may be an average value of the brightness information of all the pixel points in the target screen area.
And step 34, if the value is less than the preset value, determining that the display fault of the monitor of the digital rearview mirror occurs.
Specifically, when the brightness information of the target screen area in the YUV image is less than the brightness threshold, it can be determined that the screen of the monitor of the digital rearview mirror is completely black and a fault occurs.
And 12, if so, transmitting the display image of the monitor of the digital rearview mirror to a central control screen for display.
Specifically, after the monitor of the digital rearview mirror has a display fault, the image information required to be displayed by the monitor can be transmitted to the in-vehicle central control screen for displaying, so that the driver can accurately acquire the rearview information of the vehicle, the central control screen can still display the rear view field for the driver, the driving, lane changing, turning and other operations are facilitated, no lag exists in time, and the driving safety of the vehicle is guaranteed. Meanwhile, the embodiment does not need to modify the hardware of the digital rearview mirror of the vehicle, does not increase the manufacturing cost of the vehicle, and is beneficial to large-scale industrial production application; meanwhile, the existing vehicle is convenient to upgrade and reform, and the method has good applicability.
In a possible embodiment, after the transmitting the display image of the monitor of the digital rearview mirror to the central control screen for display, the method further comprises:
and generating a first reminding instruction to send out a fault alarm to remind a driver that the monitor of the digital rearview mirror has a fault.
The first reminding instruction is a level signal, the fault alarm information is light, sound or the combination of the light and the sound, and the fault alarm can remind a driver of speed reduction operation.
Based on the same inventive concept as the method, an embodiment of the present invention further provides a display control device of a digital rearview mirror system, as shown in fig. 2, the display control device of the embodiment of the digital rearview mirror system is a schematic structural diagram, and the device includes:
the first judgment module is used for judging whether a monitor of the digital rearview mirror has a display fault or not;
and the first control module is used for transmitting the display image of the monitor of the digital rearview mirror to the central control screen for display after the monitor has a display fault.
In a possible embodiment, the first determining module includes:
and the second judgment module is used for judging whether the monitor of the digital rearview mirror has display faults or not according to the current fault code information fed back by the monitor of the digital rearview mirror.
In a possible embodiment, the second determining module includes:
the third judging module is used for judging whether the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission verification faults;
and the first identification module is used for identifying that the monitor of the digital rearview mirror has display faults when the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission verification faults.
In a possible embodiment, the determining whether a display failure occurs in a monitor of the digital rearview mirror includes:
a first acquisition module for acquiring a first image of a target screen of a monitor including the digital rearview mirror;
the first processing module is used for converting the first image into a YUV image;
the fourth judging module is used for judging whether the brightness information of the target screen area in the YUV image is smaller than a brightness threshold value;
and the second determination module is used for determining that the monitor of the digital rearview mirror has display failure when the brightness information of the target screen area in the YUV image is less than the brightness threshold value.
In a possible embodiment, the apparatus further comprises:
and the first generation module is used for generating a first reminding instruction after the first control module works so as to send out a fault alarm and remind a driver that the monitor of the digital rearview mirror has a fault.
Based on the same inventive concept as the foregoing embodiment, an embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of any one of the foregoing digital rearview mirror system display control methods when executing the program.
Based on the same inventive concept as the foregoing embodiment, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, realizes the steps of any one of the foregoing digital rearview mirror system display control methods.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
by the processing method of the embodiment of the invention, when the monitor of the digital rearview mirror has a display fault, the image information required to be displayed by the monitor can be immediately transmitted to the central control screen in the vehicle for display, so that the driver can accurately acquire the rearview information of the vehicle, the central control screen can still display the rear view field for the driver, the control of driving lane changing, turning and the like is facilitated, no lag exists in time, and the driving safety of the vehicle is ensured.
In addition, the hardware of the digital rearview mirror of the vehicle is not required to be modified, the manufacturing cost of the vehicle is not increased, and the large-scale industrial production application is facilitated; meanwhile, the existing vehicle is convenient to upgrade and reform, and the method has good applicability.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display control method of a digital rearview mirror system is characterized by comprising the following steps:
judging whether a monitor of the digital rearview mirror has a display fault or not;
and if so, transmitting the display image of the monitor of the digital rearview mirror to a central control screen for display.
2. The display control method of a digital rearview mirror system as claimed in claim 1, wherein said judging whether a display failure occurs in a monitor of the digital rearview mirror comprises:
and judging whether the monitor of the digital rearview mirror has display faults or not according to the current fault code information fed back by the monitor of the digital rearview mirror.
3. The display control method of the digital rearview mirror system as claimed in claim 2, wherein the determining whether the display failure of the monitor of the digital rearview mirror occurs according to the current failure code information fed back by the monitor of the digital rearview mirror comprises:
judging whether the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission check faults;
and if so, determining that the display fault of the monitor of the digital rearview mirror occurs.
4. The display control method of a digital rearview mirror system as claimed in claim 1, wherein said judging whether a display failure occurs in a monitor of the digital rearview mirror comprises:
acquiring a first image of a target screen of a monitor containing the digital rearview mirror;
converting said first image into a YUV image;
judging whether the brightness information of the target screen area in the YUV image is smaller than a brightness threshold value;
if the digital rearview mirror is smaller than the preset threshold value, the display fault of the monitor of the digital rearview mirror is determined to occur.
5. The display control method of a digital rearview mirror system as claimed in any one of claims 1 to 4, wherein after the transmission of the display image of the monitor of the digital rearview mirror to the central control screen for display, the method further comprises:
and generating a first reminding instruction to send out a fault alarm to remind a driver that the monitor of the digital rearview mirror has a fault.
6. A digital rearview mirror system display control apparatus, comprising:
the first judgment module is used for judging whether a monitor of the digital rearview mirror has a display fault or not;
and the first control module is used for transmitting the display image of the monitor of the digital rearview mirror to the central control screen for display after the monitor has a display fault.
7. The digital rearview mirror system display control device of claim 6, wherein the first determining module comprises:
and the second judgment module is used for judging whether the monitor of the digital rearview mirror has display faults or not according to the current fault code information fed back by the monitor of the digital rearview mirror.
8. The digital rearview mirror system display control device of claim 7, wherein the second determining module comprises:
the third judging module is used for judging whether the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission verification faults;
and the first identification module is used for identifying that the monitor of the digital rearview mirror has display faults when the current fault code information comprises any one of erasable memory faults, input signal faults, power supply faults, low-voltage differential signal faults and data transmission verification faults.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for executing the computer program to carry out the steps of the method of any one of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, is adapted to carry out the steps of the method of any one of claims 1 to 5.
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| CN202110735610.6A CN113479136A (en) | 2021-06-30 | 2021-06-30 | Display control method and device for digital rearview mirror system |
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| CN202110735610.6A CN113479136A (en) | 2021-06-30 | 2021-06-30 | Display control method and device for digital rearview mirror system |
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