CN109910753B - Method, device, storage medium and system for displaying reverse image - Google Patents
Method, device, storage medium and system for displaying reverse image Download PDFInfo
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- CN109910753B CN109910753B CN201910227835.3A CN201910227835A CN109910753B CN 109910753 B CN109910753 B CN 109910753B CN 201910227835 A CN201910227835 A CN 201910227835A CN 109910753 B CN109910753 B CN 109910753B
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Abstract
The embodiment of the invention discloses a method, a device, a storage medium and a system for displaying a reverse image. The method comprises the following steps: when an unlocking instruction of a main driving door is detected, a starting trigger instruction sent by a vehicle body control subsystem is received, wherein the starting trigger instruction comprises an instruction for triggering a central processing unit to start; generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize; and in the starting process of the system, if a reversing signal is detected, controlling the display of a reversing image. By the technical scheme, the reverse image can be rapidly displayed under the condition that the hardware design is not increased.
Description
Technical Field
The embodiment of the invention relates to the automobile technology, in particular to a method, a device, a storage medium and a system for displaying a reversing image.
Background
The automobile backing image system adopts wide-angle camera device to install behind the automobile, and the barrier behind the automobile can be clearly seen through the display screen in the automobile. The driver can see the situation behind the vehicle on the display screen when backing the vehicle, so that traffic accidents caused by the fact that the driver cannot see the situation behind the vehicle when backing the vehicle are avoided, and the driver can safely back the vehicle.
At present, the mainstream vehicle-mounted system is an Android system, and the process of displaying the backing image is approximately: and starting the system, entering a main interface of the system, and when a reverse gear signal is detected, controlling to open the reverse camera by the application program to display an image to a user. In the process, the android system (taking full log T7 as an example) is started in advance for 0.7S, the Linux kernel is initialized for 1.2S, and the reversing detection and camera input are initialized for 1.1S, so that 3S time is needed in total, and obviously the quick reversing time (less than or equal to 1.5S) which is not in line with the requirements of a car factory is not met.
In order to improve the display speed of the rapid reversing image of the android system, a rapid reversing design scheme shown in fig. 1 is adopted at present. The scheme is mainly that a video processing IC is added on the basis of the original design, so that a back vision signal (back image) for backing is directly sent to the video processing IC by skipping a CPU, a display signal of an LCD is also directly sent to the video processing IC, and the video processing IC directly goes to a point screen (starts a screen) and displays the back image. Because the video processing IC initialization and processing time is 0.2S, and the reversing detection and the camera input and output initialization are 1.1S and are 1.3S together, the requirements are met.
However, the above-mentioned design scheme for rapid reversing has the following disadvantages: (1) the video processing IC is added to meet the requirement of a rapid backing function, so that the design is excessive, and the hardware design cost is increased; (2) certain risks are added to the overall stability of the product; (3) electromagnetic Compatibility (EMC) testing also increases the difficulty from a hardware design standpoint.
Disclosure of Invention
The embodiment of the invention provides a method, a device, a storage medium and a system for displaying a car backing image, which are used for rapidly displaying the car backing image under the condition of not increasing hardware design.
In a first aspect, an embodiment of the present invention provides a method for displaying a car backing image, including:
when an unlocking instruction of a main driving door is detected, a starting trigger instruction sent by a vehicle body control subsystem is received, wherein the starting trigger instruction comprises an instruction for triggering a central processing unit to start;
generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize;
and in the starting process of the system, if a reversing signal is detected, controlling the display of a reversing image.
In a second aspect, an embodiment of the present invention further provides a reverse image display device, where the device includes:
the starting triggering instruction generating module is used for receiving a starting triggering instruction sent by the vehicle body control subsystem when an unlocking instruction of a main driving vehicle door is detected, wherein the starting triggering instruction comprises an instruction for triggering the starting of the central processing unit;
the central processing unit pre-starting module is used for generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize;
and the reversing image display module is used for controlling the display of the reversing image if a reversing signal is detected in the starting process of the system.
In a third aspect, an embodiment of the present invention further provides a reverse image display system, where the system includes:
the system comprises a main driving vehicle door, a vehicle body control subsystem, a vehicle main control machine, a reversing camera and a display screen, wherein the vehicle main control machine comprises a central processing unit;
the vehicle body control subsystem is in communication connection with the main driving door and is used for generating an unlocking instruction and sending the unlocking instruction to the main driving door and generating a starting triggering instruction and sending the starting triggering instruction to the vehicle main control machine, wherein the starting triggering instruction comprises an instruction for triggering and starting the central processing unit;
the vehicle main controller is in communication connection with the vehicle body control subsystem and is used for generating a central processor pre-starting instruction according to the starting triggering instruction and sending the central processor pre-starting instruction to the central processor when the unlocking instruction is detected; in the starting process of the system, if a reversing signal is detected, a reversing image sent by the reversing camera is received, and the reversing image is sent to the display screen;
the central processing unit is used for starting and initializing according to the central processing unit pre-starting instruction;
the reversing camera is in communication connection with the vehicle main control machine and is used for collecting the reversing image;
the display screen is in communication connection with the vehicle main control machine and is used for displaying the reversing image.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for displaying a reverse image provided in any embodiment of the present invention.
According to the embodiment of the invention, the communication connection between the vehicle body control subsystem and the vehicle main control machine is established, so that the vehicle main control machine can detect the unlocking instruction of the main driving door, receive the starting triggering instruction sent by the vehicle body control subsystem, and further generate the central processing unit pre-starting instruction according to the starting triggering instruction, so that the central processing unit is pre-started before the system is started when the main driving door is unlocked, and thus, in the starting process of the system, if a vehicle-detecting and backing-up signal is obtained, the time for pre-starting the central processing unit can be saved, the backing-up image can be rapidly displayed, the problems of increasing hardware cost, reducing system stability and increasing EMC test risk are avoided, and the technical effect of rapidly displaying the backing-up image under the condition of not increasing hardware design is achieved.
Drawings
FIG. 1 is a schematic diagram illustrating an implementation principle of rapidly displaying a car-backing image in the prior art;
fig. 2 is a flowchart of a method for displaying a reverse image according to a first embodiment of the present invention;
fig. 3 is a flowchart of a method for displaying a reverse image according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a reverse image display device according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a reverse image display system in a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
The reversing image display method provided by the embodiment can be applied to the condition of displaying reversing images based on an Android vehicle-mounted system. The method can be executed by a reverse image display device, the device can be realized by software and/or hardware, and the device can be integrated in a vehicle Main Controller Unit (MCU) of a vehicle-mounted system. Referring to fig. 2, the method of the present embodiment specifically includes the following steps:
and S110, receiving a starting trigger instruction sent by a vehicle body control subsystem when an unlocking instruction of the main driving door is detected.
The unlocking command is a command for controlling unlocking of the vehicle door. The unlocking instruction can be generated by a Passive Entry Passive Start (PEPS) system and a vehicle body control subsystem in a matching way; or can be generated by a one-key unlocking function on the intelligent vehicle key; but also by a mechanical key unlocking operation on the smart car key. The PEPS system is a novel intelligent electronic anti-theft system which is introduced to meet the anti-theft requirement of an automobile, and adopts the advanced Radio Frequency Identification (RFID) technology to realize the functions of entering the automobile, starting an engine by one key and the like without pressing a remote controller. The body control subsystem is also called a Body Control Module (BCM), which is a control module with a powerful design function, and implements a discrete control function to control a plurality of body electrical appliances, such as electric door and window control, central control door lock control, remote control anti-theft, light system control, electric rearview mirror heating control, instrument backlight adjustment, power distribution, and the like. The start trigger command is a command for triggering the start of a component in the vehicle, such as a command for triggering the start of a central processing unit, a camera, a radio, a lighting system, an air conditioner, and the like. Illustratively, the start triggering instruction comprises an instruction that triggers the start of the central processor.
Specifically, in the vehicle-mounted system, each door has a corresponding identifier for determining which door has a switch operation, so that the vehicle main controller can detect whether there is an unlocking instruction of the main driving door according to the identifier of the main driving door. If the unlocking instruction of the main driving door exists, namely the unlocking instruction of the main driving door is detected, the vehicle body control subsystem can generate a starting triggering instruction, the starting triggering instruction is sent to the vehicle main control machine MCU through a communication line between the vehicle body control subsystem and the vehicle main control machine, and the vehicle main control machine MCU can receive the starting triggering instruction.
It should be noted that, in the conventional PEPS system, there is no communication line between the vehicle body control subsystem BCM and the vehicle main control machine MCU, but in the embodiment of the present invention, in order to pre-start a Central Processing Unit (CPU) included in the MCU in advance before the vehicle-mounted system is turned on, a communication line, such as a CAN bus, between the BCM and the MCU is added, so that the transmission of the start trigger command including the command to trigger the start of the CPU to the MCU CAN be realized.
And S120, generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize.
The CPU pre-start instruction is used for controlling the CPU to be pre-started.
Specifically, after receiving the start triggering instruction, the vehicle main control unit MCU analyzes the instruction to obtain a component, such as a central processing unit CPU, that needs to be pre-started. And then, generating a pre-starting instruction of the corresponding component, such as a central processing unit pre-starting instruction, according to an instruction analysis result of the starting triggering instruction, and sending the generated pre-starting instruction to the corresponding component to control the corresponding component to execute the pre-starting operation, wherein if the central processing unit pre-starting instruction is sent to the central processing unit, the central processing unit is started and initialized according to the central processing unit pre-starting instruction.
And S130, in the starting process of the system, if a reversing signal is detected, controlling the display of a reversing image.
The reverse signal is a signal generated when the automobile is in reverse gear.
Specifically, in practical application, a user may need to back up to a parking space first, then ignition of a vehicle may occur to trigger a vehicle-mounted system to start up, and then a reverse gear may be immediately or simultaneously engaged, and at this time, a situation that a reverse image system is not started up yet and a reverse image needs to be displayed may occur.
According to the embodiment of the invention, in the starting process of the vehicle-mounted system, if the vehicle main control machine detects a reverse signal, the vehicle main control machine needs to acquire an image behind the vehicle through a camera (namely, a reverse camera) arranged behind the vehicle and display the image on the display screen. Because the CPU has already finished the operation of pre-starting at this moment, so the process of displaying the image of backing a car does not need to wait for CPU to pre-start again. If the triggering instruction generated in S110 does not include a triggering instruction for the display screen and/or the reversing camera, the display screen and/or the reversing camera is not pre-started when the reversing signal is detected, and at this time, the display operation of the reversing image can be performed only by waiting for the time for pre-starting the display screen and/or the camera. If the starting trigger instruction generated in S110 includes a trigger instruction for the display screen and the reversing camera, the display screen and the reversing camera are also pre-started before the system is started, and at this time, the display operation of the reversing image can be directly performed.
Whether the display screen and the reversing camera are pre-started in advance or not, in the embodiment of the invention, the CPU is pre-started before the system is started, the waiting time required for displaying the reversing image is the pre-starting time of the display screen and the reversing camera at most, the waiting time can completely meet the rapid reversing time required by a vehicle manufacturer, no redundant hardware component design is added, and the problems of hardware cost increase, system stability reduction and EMC test risk increase are not caused.
Exemplarily, before S130, the method further includes: and if the system is detected to be a system starting signal, triggering the system to start. The system startup signal is a signal for controlling the startup of the vehicle-mounted Android system. Illustratively, the system start signal is a vehicle ignition start signal. The vehicle ignition start signal may be a start signal generated by an automobile ignition switch, such as an ACC ON signal generated when the automobile ignition switch is in an ACC range, or an ON signal generated when the automobile ignition switch is in an ON range, etc. In specific implementation, the vehicle main controller detects whether a system startup signal exists. If yes, the vehicle-mounted system is triggered to start (power on) according to the system power on signal.
After the reverse signal is detected and before the display of the reverse image is controlled, the method further comprises the following steps: and generating a camera pre-starting instruction to control the starting and initialization of the reversing camera. When the start trigger instruction generated in S110 does not include a trigger instruction for the reversing camera, an instruction for triggering the camera to be pre-started, that is, a camera pre-start instruction needs to be generated when a reversing signal is detected, and the instruction is sent to the reversing camera. And the reversing camera executes the starting and initialization operations according to the camera pre-starting instruction.
According to the technical scheme of the embodiment, the communication connection between the vehicle body control subsystem and the vehicle main control machine is established, so that the vehicle main control machine can detect the unlocking instruction of the main driving door, receive the starting triggering instruction sent by the vehicle body control subsystem, and further generate the central processing unit pre-starting instruction according to the starting triggering instruction, so that when the main driving door is unlocked, the central processing unit is pre-started before the system is started, in the starting process of the system, if a vehicle is detected to a reversing signal, the time for pre-starting the central processing unit can be saved, the reversing image is rapidly displayed, the problems of increasing hardware cost, reducing system stability and increasing EMC test risk are avoided, and the technical effect of rapidly displaying the reversing image under the condition of not increasing hardware design is achieved.
Example two
In the present embodiment, based on the first embodiment, further optimization is performed on "the unlocking instruction of the main driving door is detected". On the basis, the starting trigger instruction can be further optimized, and the steps of generating a camera pre-starting instruction according to the starting trigger instruction so as to control the starting and initialization of the reversing camera are added. On the basis, the display of the reverse image can be further optimized. Wherein explanations of the same or corresponding terms as those of the above embodiments are omitted. Referring to fig. 3, the method for displaying a reverse image provided in this embodiment includes:
and S210, monitoring whether the vehicle body control subsystem generates an unlocking instruction of the main driving door.
The unlocking instruction is generated by the vehicle body control subsystem according to an unlocking notification instruction generated by the keyless entry and start subsystem. The unlocking notification instruction is an instruction for triggering generation of an unlocking instruction.
Specifically, if the unlocking of the main driving door is realized by the keyless entry and start module PEPS system, the unlocking instruction is generated by the body control subsystem BCM according to the unlocking notification instruction sent by the PEPS system. In specific implementation, the PEPS system monitors a switch command generated by a switch button on a handle of the main driving vehicle door. After the switch command is monitored, the PEPS system triggers the low-frequency radio frequency antenna on the handle to transmit a low-frequency signal. The smart car key responds to the low frequency signal and transmits a high frequency signal. The PEPS system verifies the identity of the intelligent vehicle key after receiving the high-frequency signal, generates an unlocking notification instruction after the verification is passed, and sends the unlocking notification instruction to the vehicle body control subsystem BCM. And the BCM generates an unlocking instruction of the main driving door according to the received unlocking notification instruction and sends the unlocking instruction to the main driving door so as to control the main driving door to be unlocked. The vehicle main control machine MCU monitors whether the vehicle body control subsystem BCM generates the unlocking instruction. If the monitoring result is negative, continuing monitoring; otherwise, S220 is executed.
And S220, if so, detecting an unlocking instruction of the main driving door.
Specifically, if the monitoring result is yes, it is determined that the vehicle master controller has detected an unlock command of the master driver door, and S230 is executed.
And S230, receiving a starting trigger instruction sent by the vehicle body control subsystem.
The starting triggering instruction comprises an instruction for triggering the central processing unit to start, and the starting triggering instruction further comprises an instruction for initializing the reversing camera.
S240, generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize.
And S250, generating a camera pre-starting instruction according to the starting triggering instruction so as to control the starting and initialization of the reversing camera.
Specifically, after receiving the start triggering instruction, the vehicle main control unit MCU analyzes the instruction, and obtains that the component to be pre-started is the reversing camera. And then, generating a pre-starting instruction of the reversing camera, namely a camera pre-starting instruction, and sending the generated camera pre-starting instruction to the reversing camera. The reversing camera is started and initialized according to the camera pre-starting instruction.
And S260, in the starting process of the system, if a reversing signal is detected, receiving the image data behind the vehicle collected by the reversing camera to serve as a reversing image.
Specifically, in the starting process of the system, the backing camera is pre-started, so that image data behind the vehicle can be directly acquired. At the moment, if the vehicle main control machine detects a reversing signal, the vehicle rear image data collected and transmitted by the reversing camera can be directly obtained, and the vehicle rear image data is used as a reversing image.
It should be noted that the processing of the vehicle rear image data is realized in the central processing unit CPU, so that the vehicle rear image data collected by the reversing camera can be directly transmitted to the central processing unit CPU in the vehicle main control machine.
And S270, controlling and displaying the reverse image.
Specifically, after the reverse image is obtained, the display operation of the reverse image can be controlled. If the reversing image can be sent to the display screen, the reversing image is displayed by the display screen.
It should be noted that the execution sequence of S240 and S250 is not limited, S240 may be executed first and then S250 is executed, S250 may be executed first and then S240 is executed, or S240 and S250 may be executed simultaneously.
According to the technical scheme, the instruction for initializing the reversing camera is set in the starting trigger instruction, so that the vehicle main control machine can generate a camera pre-starting instruction, the reversing camera is started in advance before the vehicle-mounted system is started after the main driving door is unlocked, and when the reversing signal is detected, the vehicle main control machine only carries out screen point operation on the display screen, so that the reversing image can be directly displayed, the waiting time for reversing image display is further reduced, and the reversing image display speed is further improved.
The following is an embodiment of the reverse image display device provided in the embodiments of the present invention, and the device and the reverse image display method in the embodiments described above belong to the same inventive concept, and details not described in detail in the embodiments of the reverse image display device may refer to the embodiments of the reverse image display method described above.
EXAMPLE III
This embodiment provides a reverse image display device, refer to fig. 4, and the device specifically includes:
the starting triggering instruction generating module 410 is used for receiving a starting triggering instruction sent by a vehicle body control subsystem when an unlocking instruction of a main driving vehicle door is detected, wherein the starting triggering instruction comprises an instruction for triggering a central processing unit to start;
the central processing unit pre-starting module 420 is configured to generate a central processing unit pre-starting instruction according to the starting triggering instruction, so as to control the central processing unit to start and initialize;
the reverse image display module 430 is configured to control display of a reverse image if a reverse signal is detected during a system startup process.
Optionally, on the basis of the above apparatus, the apparatus further includes a camera pre-starting module, configured to:
after the reversing signal is detected and before the reversing image is controlled to be displayed, a camera pre-starting instruction is generated so as to control the reversing camera to be started and initialized.
Optionally, the start triggering instruction further includes an instruction for initializing a reversing camera;
correspondingly, the camera pre-starting module is specifically configured to:
and generating a camera pre-starting instruction according to the starting triggering instruction so as to control the starting and initialization of the reversing camera.
Optionally, the reverse image display module 430 is specifically configured to:
receiving image data behind the vehicle collected by a reversing camera as a reversing image;
and controlling and displaying the reversing image.
Optionally, the start triggering instruction generating module 410 is specifically configured to:
monitoring whether an unlocking instruction of a main driving door is generated by a vehicle body control subsystem or not, wherein the unlocking instruction is generated by the vehicle body control subsystem according to an unlocking notification instruction generated by a keyless entry and start subsystem;
and if so, detecting an unlocking instruction of the main driving door.
Optionally, on the basis of the foregoing apparatus, the apparatus further includes a boot trigger module, configured to:
in the starting process of the system, before the display of a reverse image is controlled if a reverse signal is detected, and the system is triggered to start if a system starting signal is detected; the system starting signal is a vehicle ignition starting signal.
According to the reversing image display device provided by the third embodiment of the invention, the central processing unit is pre-started before the system is started when the main driving vehicle door is unlocked, so that the time for pre-starting the central processing unit can be saved if a reversing signal arrives during the system starting process, the reversing image is rapidly displayed, the problems of increasing the hardware cost, reducing the system stability and increasing the EMC test risk are avoided, and the technical effect of rapidly displaying the reversing image without increasing the hardware design is achieved.
The reversing image display device provided by the embodiment of the invention can execute the reversing image display method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
It should be noted that, in the embodiment of the reverse image display device, each unit and each module included in the embodiment are only divided according to functional logic, but are not limited to the above division, as long as the corresponding function can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
Example four
Referring to fig. 5, the present embodiment provides a reverse image display system, which includes: the system comprises a main driving door 510, a vehicle body control subsystem 520, a vehicle main controller 530, a reversing camera 540 and a display screen 550, wherein the vehicle main controller 530 comprises a central processing unit 531;
the vehicle body control subsystem 520 is in communication connection with the main driving vehicle door 510 and is used for generating an unlocking instruction and sending the unlocking instruction to the main driving vehicle door 510 and generating a starting triggering instruction and sending the starting triggering instruction to the vehicle main control machine 530, wherein the starting triggering instruction comprises an instruction for triggering the starting central processing unit 531;
the vehicle main controller 530 is in communication connection with the vehicle body control subsystem 520 and is used for generating a central processor pre-starting instruction according to the starting triggering instruction when an unlocking instruction is detected, and sending the central processor pre-starting instruction to the central processor 531; in the system startup process, if a reversing signal is detected, a reversing image sent by the reversing camera 540 is received, and the reversing image is sent to the display screen 550;
the central processing unit 531 is used for starting and initializing according to a central processing unit pre-starting instruction;
the reversing camera 540 is in communication connection with the vehicle main controller 530 and is used for collecting reversing images;
and the display screen 550 is in communication connection with the vehicle main controller 530 and is used for displaying the reverse image.
Optionally, the vehicle primary controller 530 is further configured to: after the reverse signal is detected, a camera pre-start instruction is generated to control the reverse camera 540 to start and initialize.
Optionally, the vehicle primary controller 530 is further configured to: when the start trigger instruction further includes an instruction for initializing the reversing camera, a camera pre-start instruction is generated according to the start trigger instruction to control the reversing camera 540 to start and initialize.
Optionally, on the basis of the above system, the system further includes: the intelligent vehicle key 560 and the keyless entry and start subsystem 570, the main driving door 510 comprises a handle, the handle comprises a door opening button 511 and a low-frequency radio frequency antenna 512, the intelligent vehicle key 560 comprises a high-frequency radio frequency antenna 561;
a door opening button 511, communicatively connected to the keyless entry and start subsystem 570, for generating a switch command and transmitting the switch command to the keyless entry and start subsystem 570;
the keyless entry and start subsystem 570 is in communication connection with the vehicle body control subsystem 520 and is used for generating a signal transmission driving instruction according to the switching signal, sending the signal transmission driving instruction to the low-frequency radio-frequency antenna 512, verifying the identity information of the intelligent vehicle key 560 according to a high-frequency radio-frequency signal sent by the high-frequency radio-frequency antenna 561, and generating an unlocking notification instruction and sending an unlocking termination instruction to the vehicle body control subsystem 520 when a verification result is correct;
the low-frequency radio-frequency antenna 512 is used for generating a low-frequency radio-frequency signal according to the signal emission driving instruction and sending the low-frequency radio-frequency signal to the intelligent vehicle key 560;
the intelligent vehicle key is used for generating a high-frequency radio-frequency signal through a high-frequency radio-frequency antenna 561 according to the low-frequency radio-frequency signal;
accordingly, the body control subsystem 520 is specifically configured to generate an unlocking instruction according to the unlocking notification instruction.
According to the reversing image display system provided by the fourth embodiment of the invention, the central processing unit is pre-started before the system is started when the main driving vehicle door is unlocked, so that the time for pre-starting the central processing unit can be saved if a reversing signal arrives during the starting process of the system, the reversing image is rapidly displayed, the problems of increasing the hardware cost, reducing the system stability and increasing the EMC test risk are avoided, and the technical effect of rapidly displaying the reversing image without increasing the hardware design is achieved.
EXAMPLE five
The present embodiments provide a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method of displaying a reverse image, the method comprising:
when an unlocking instruction of a main driving door is detected, a starting trigger instruction sent by a vehicle body control subsystem is received, wherein the starting trigger instruction comprises an instruction for triggering a central processing unit to start;
generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize;
and in the starting process of the system, if a reversing signal is detected, controlling the display of a reversing image.
Of course, the storage medium containing the computer-executable instructions provided in the embodiments of the present invention is not limited to the above-described method operations, and may also perform related operations in the reverse image display method provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, and includes several instructions for enabling a device equipped with an android vehicle-mounted system to execute the method for displaying a reverse image provided in each embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A method for displaying a reverse image, comprising:
when an unlocking instruction of a main driving door is detected, a starting trigger instruction sent by a vehicle body control subsystem is received, wherein the starting trigger instruction comprises an instruction for triggering a central processing unit to start;
generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize;
in the starting process of the system, if a reversing signal is detected, displaying of a reversing image is controlled;
the starting triggering instruction also comprises an instruction for initializing a reversing camera;
correspondingly, after receiving the starting triggering instruction sent by the vehicle body control subsystem, the method further comprises the following steps:
and generating a camera pre-starting instruction according to the starting triggering instruction so as to control the starting and initialization of the reversing camera.
2. The method of claim 1, wherein controlling the display of the reverse image comprises:
receiving the image data behind the vehicle collected by the reversing camera as the reversing image;
and controlling and displaying the reversing image.
3. The method of claim 1, wherein the detecting an unlock command for a primary driver door comprises:
monitoring whether the vehicle body control subsystem generates an unlocking instruction of the main driving vehicle door, wherein the unlocking instruction is generated by the vehicle body control subsystem according to an unlocking notification instruction generated by a keyless entry and start subsystem;
and if so, detecting an unlocking instruction of the main driving door.
4. The method according to claim 1, wherein before controlling the display of the reverse image if the reverse signal is detected during the system startup process, the method further comprises:
if detecting a system startup signal, triggering the system to start up; and the system starting signal is a vehicle ignition starting signal.
5. A reverse image display device, comprising:
the starting triggering instruction generating module is used for receiving a starting triggering instruction sent by the vehicle body control subsystem when an unlocking instruction of a main driving vehicle door is detected, wherein the starting triggering instruction comprises an instruction for triggering the starting of the central processing unit;
the central processing unit pre-starting module is used for generating a central processing unit pre-starting instruction according to the starting triggering instruction so as to control the central processing unit to start and initialize;
the reversing image display module is used for displaying a reversing image if a reversing signal is detected in the starting process of the system;
the starting triggering instruction also comprises an instruction for initializing a reversing camera;
correspondingly, the camera pre-starting module is specifically configured to:
and generating a camera pre-starting instruction according to the starting triggering instruction so as to control the starting and initialization of the reversing camera.
6. A reverse image display system, comprising: the system comprises a main driving vehicle door, a vehicle body control subsystem, a vehicle main control machine, a reversing camera and a display screen, wherein the vehicle main control machine comprises a central processing unit;
the vehicle body control subsystem is in communication connection with the main driving door and is used for generating an unlocking instruction and sending the unlocking instruction to the main driving door and generating a starting triggering instruction and sending the starting triggering instruction to the vehicle main control machine, wherein the starting triggering instruction comprises an instruction for triggering and starting the central processing unit;
the vehicle main controller is in communication connection with the vehicle body control subsystem and is used for generating a central processor pre-starting instruction according to the starting triggering instruction and sending the central processor pre-starting instruction to the central processor when the unlocking instruction is detected; in the starting process of the system, if a reversing signal is detected, a reversing image sent by the reversing camera is received, and the reversing image is sent to the display screen;
the central processing unit is used for starting and initializing according to the central processing unit pre-starting instruction;
the reversing camera is in communication connection with the vehicle main control machine and is used for collecting the reversing image;
the display screen is in communication connection with the vehicle main control machine and is used for displaying the reversing image;
the vehicle primary controller is further configured to: and when the starting trigger instruction further comprises an instruction for initializing the reversing camera, generating a camera pre-starting instruction according to the starting trigger instruction so as to control the reversing camera to start and initialize.
7. The system of claim 6, further comprising: the intelligent vehicle key comprises an intelligent vehicle key and a keyless entry and start subsystem, wherein the main driving vehicle door comprises a handle, the handle comprises a door opening button and a low-frequency radio frequency antenna, and the intelligent vehicle key comprises a high-frequency radio frequency antenna;
the door opening button is in communication connection with the keyless entry and start subsystem and is used for generating a switch instruction and sending the switch instruction to the keyless entry and start subsystem;
the keyless entry and start subsystem is in communication connection with the vehicle body control subsystem and is used for generating a signal transmission driving instruction according to the switching signal, sending the signal transmission driving instruction to the low-frequency radio-frequency antenna, verifying the identity information of the intelligent vehicle key according to a high-frequency radio-frequency signal sent by the high-frequency radio-frequency antenna, generating an unlocking notification instruction and sending the unlocking termination instruction to the vehicle body control subsystem when a verification result is correct;
the low-frequency radio-frequency antenna is used for generating a low-frequency radio-frequency signal according to the signal transmitting driving instruction and sending the low-frequency radio-frequency signal to the intelligent vehicle key;
the intelligent vehicle key is used for generating the high-frequency radio-frequency signal through the high-frequency radio-frequency antenna according to the low-frequency radio-frequency signal;
correspondingly, the vehicle body control subsystem is specifically used for generating an unlocking instruction according to the unlocking notification instruction.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the method of displaying a reverse image according to any one of claims 1 to 4.
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| CN110936908A (en) * | 2019-11-21 | 2020-03-31 | 东风电驱动系统有限公司 | Quick response method and device of vehicle-mounted display system based on operating system |
| CN110962780A (en) * | 2019-12-21 | 2020-04-07 | 江西江铃集团新能源汽车有限公司 | Startup method of vehicle-mounted intelligent system, vehicle-mounted intelligent system and readable storage medium |
| CN112199222B (en) * | 2020-12-03 | 2021-03-16 | 湖北芯擎科技有限公司 | Video display method and device, electronic equipment and storage medium |
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