CN113434203A - Method for quickly starting automobile image equipment and automobile image system - Google Patents
Method for quickly starting automobile image equipment and automobile image system Download PDFInfo
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Abstract
The invention discloses a method for quickly starting automobile image equipment, which comprises the following steps that when an automobile is quickly started and an Android system in an AP core in a multi-core heterogeneous processing chip is not started, if an instruction of a user for carrying out backing operation is obtained, an automobile sensing system is checked by an MCU in the quickly started multi-core heterogeneous processing chip to control the automobile sensing system, wherein the MCU comprises a look-around system and a backing radar; collecting data through an automobile sensing system to carry out integration operation, and displaying images through a central control screen, wherein the images comprise rear-view image display, backing position early warning prompt and alarm display; after the Android system is started, the AP core in the multi-core heterogeneous processing chip is communicated with the MCU through the bus, and the MUC returns the control right of the system to the Android system after receiving information, wherein the control right of the system comprises an automobile sensing system, the bus, a video processing unit and a radar.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a method for quickly starting automobile image equipment and an automobile image system.
Background
Automobile infotainment systems have gradually become standard, and the existing automobile video entertainment systems or electronic cabin systems are all based on android operating systems. Android has a good ecosystem, but the large and complex operating system causes the system to have long startup time, and needs 18s at the fastest time, so that the waiting time is very long for a user who needs to back up after starting, and the user who is used to use a back-up video is very inconvenient and has poor user experience.
CN111045752B discloses a method for quickly starting a car backing image based on an android system, evs starts to provide a car backing image about 4 seconds after the system is started, a parking application is started about 11 seconds, the parking application is in communication connection with evs, the parking application starts to render images such as a background and a radar image through message interaction, rendering is completed, and evs transparently transmits the background by setting an alpha layer transparent transmission mechanism. Therefore, the reverse image can be rapidly provided in about 4 seconds, and the functions of a touch radar and the like can be provided in about 11 seconds.
However, this patent is based on the Android system and relying on the surface flinger is not suitable for practical vendor implementations because the EVS must be able to run within a few seconds after boot-up, which is much earlier than the time when the surface flinger itself starts up.
CN103522961B discloses a method, a system and a vehicle machine system for rapidly starting a car backing image, wherein the method comprises the steps of additionally arranging a drive for rapidly starting the car backing image on a kernel layer of the vehicle machine system; after a kernel layer of the vehicle machine system is started, the driver creates an object for acquiring image data acquired by the image acquisition device and detecting whether the current vehicle is in a reverse gear state; and when the current vehicle is detected to be in a reverse gear state, opening the created object, transmitting the acquired image data to a video memory of the kernel layer, and displaying a reverse image formed by the image data.
However, the patent is still based on the Android system, a driver for rapidly starting the car backing image is additionally arranged on a kernel layer of the system, and after the kernel layer of the car machine system is started, an object is created by the driver and used for acquiring image data acquired by the image acquisition device. The system kernel needs to be modified, and the scheduling and running mechanism of the system needs to be modified, so that the realization difficulty is extremely high.
Disclosure of Invention
The invention mainly aims to provide a method for quickly starting a car backing image and an automobile image system, which can realize car backing display within 3 seconds of starting, provide timely video display for a user and guide the user to carry out car backing operation.
The technical scheme adopted by the invention is as follows:
the method for quickly starting the automobile image equipment comprises the following steps:
when an automobile is started quickly, and the Android system of audio-visual entertainment equipment or an electronic intelligent cabin system is not started yet, if an instruction of a user for carrying out a reversing operation is obtained, the automobile sensing system is checked by an MCU (microprogrammed control unit) in a multi-core heterogeneous processing chip which is started quickly to control the automobile sensing system, wherein the MCU comprises a look-around system and a reversing radar;
collecting data through an automobile sensing system to carry out integration operation, and displaying images through a central control screen, wherein the images comprise rear-view image display, backing position early warning prompt and alarm display;
after the Android system is started, the AP core in the multi-core heterogeneous processing chip is communicated with the MCU through the bus, and the MUC returns the control right of the system to the Android system after receiving information, wherein the control right of the system comprises an automobile sensing system, the bus, a video processing unit and a radar.
The invention also provides a system for rapidly starting the automobile image, which comprises:
the multi-core heterogeneous processing chip SOC comprises an AP, an MCU, an on-chip BUS, a CAN and an IIC;
the reversing radar ECU drives the radar sensor to send out a detection signal, receives return data of the radar sensor, calculates the condition of a barrier behind the vehicle, and then sends processed information to the multi-core heterogeneous processing chip SOC through the CAN bus;
the video chip is a 360-degree look-around system or a reversing camera and sends shot video data to the decoding chip;
the decoding chip is used for carrying out format conversion on the video data, sending the video data to the multi-core heterogeneous processing chip SOC, and simultaneously sending the setting information to the 360-degree look-around system or the reversing camera;
inputting an SPDT analog signal switch, and connecting the SPDT analog signal switch with a decoding chip and a multi-core heterogeneous processing chip SOC;
when the Android system in the AP of the multi-core heterogeneous processing chip SOC is not started yet, when a vehicle is started to have a backing request, the MCU of the multi-core heterogeneous processing chip SOC sets or monitors the state of a decoding chip and a 360-degree system or a backing camera by inputting an SPDT analog signal switch; when the vehicle is started without a backing request, after the Android system is started, the AP inputs the SPDT analog signal switch to set or monitor the state of the decoding chip and the 360-degree system or the backing camera.
According to the above technical scheme, the quick start automobile image system further comprises:
the output SPDT analog signal switch is connected with the coding chip and the multi-core heterogeneous processing chip SOC;
the encoding chip acquires video data through a video output port of the multi-core heterogeneous processing chip SOC and transmits the video data to a display screen;
when a vehicle starts to have a backing request, the MCU of the multi-core heterogeneous processing chip SOC sets or monitors the state of the coding chip and the display screen by outputting the SPDT analog signal switch; when the vehicle is started without a backing request, the AP of the multi-core heterogeneous processing chip SOC is connected with the coding chip through the output SPDT analog signal switch, and the coding chip and the display screen are set or state monitoring is carried out after the Android system is started.
And sending the video data to the decoding chip by the video chip through an FPD LINK bus or a GMSL bus according to the technical scheme.
In connection with the above technical solution, the decoding chip specifically converts serial video data into a parallel data format of MIPI-CSI and sends the parallel data format to the multi-core heterogeneous processing chip SOC.
According to the technical scheme, the decoding chip is further used for monitoring the state of the 360-degree system or the reversing camera.
And connecting the decoding chip with a 360-degree around-the-sight system or a reversing camera through an FPD _ LINK bus or a GMSL bus in a single-ended 50 omega coaxial cable or 100 omega STP mode.
And connecting the decoding chip with the multi-core heterogeneous processing chip SOC through the MIPI _ CSI bus.
According to the technical scheme, the multi-core heterogeneous processing chip SOC is respectively connected with a DDR (double data rate) and an EMMC (embedded multi-core heterogeneous memory), the DDR is used for storing temporary data required to be used, and the EMMC is used for storing data and system files.
In connection with the above technical solution, the encoding chip is further configured to receive parallel video data processed by the multi-core heterogeneous processing chip SOC, package the parallel video data into serial video signals, send the serial video signals to the display screen for display, transmit setting information to the display screen through the bus, and monitor the state of the display screen.
And connecting the coding chip with the multi-core heterogeneous processing chip SOC through the MIPI _ DSI bus or the LVDS bus.
The invention has the following beneficial effects: when the Android system is not started, the automobile sensing system is controlled by quickly starting the MCU in the multi-core heterogeneous processing chip, the automobile sensing system comprises a look-around system and a reversing radar, after the Android system is started, the AP core in the multi-core heterogeneous processing chip is communicated with the MCU through a bus, and the MUC returns the control right of the system to the Android system after receiving information.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is an electrical schematic diagram of a quick start car image system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The method for quickly starting the automobile image equipment can be used for quickly starting an automobile, when the Android system of audio-visual entertainment equipment or an electronic intelligent cockpit system of the automobile is not started, when a user performs backing operation, the automobile sensing system is checked to be controlled through the quickly started MCU, the method comprises a surround view system and a backing radar, the data of the sensing system are collected to be integrated and operated, the image is displayed on a central control screen, a rearview image display, a backing position early warning prompt and an alarm display are provided for a driver, after the Android system is started, an AP core is communicated with the MCU through a bus, and after receiving information, an MUC returns the control right of the system to Android, and the method comprises the sensing system, the bus, a video processing unit and radar collected data.
As shown in fig. 1, in order to implement the method, the fast-start car imaging system according to the embodiment of the present invention includes chips IC1, IC2, IC3, IC4, IC5, IC6, IC7, IC8, IC9, and IC 10.
The IC1 is a multi-core heterogeneous processing chip SOC, which includes an AP core, an MCU core, and other functional units such as an on-chip BUS, a CAN, and an IIC. During starting, the MCU core is short in starting time, the starting can be completed within 100ms, the AP core is responsible for running the Android system, but the starting time of the Android system is long, and the starting time is usually more than 18s, even several minutes. Further, the processing chip SOC is connected to the DDR (IC7) and the EMMC memory (IC6), respectively. The EMMC stores data and system files, and the DDR stores temporary data which needs to be used.
The 4 ultrasonic radar sensors 1-4 are used for detecting the distance of an obstacle behind the vehicle, and the IC2 is a reversing radar ECU which drives the radar sensors to send out detection signals and simultaneously receives return data of the sensors to calculate the condition of the obstacle behind the vehicle. The processed information is sent to the SOC via the CAN bus.
The IC4 is a 360-degree look-around system or a reversing camera, video data of the IC4 is sent to a decoding chip through an FPD LINK bus or a GMSL bus, the decoding chip converts serial video data into a parallel data format of MIPI-CSI and sends the parallel data format of MIPI-CSI to the SOC, and meanwhile, setting information is sent to the 360-degree look-around system or the reversing camera through a bus.
The decoding chip IC5 packages serial video data output by the 360 system or the reversing camera into parallel MIPI _ CSI signals, sends the parallel MIPI _ CSI signals to the SOC, and simultaneously transmits setting information to the 360 system or the reversing camera through a bus, and sets or monitors the state of the 360 system or the reversing camera.
The SPDT analog signal switch IC3 is an IIC setting signal for selecting the coding chip, and is connected with two IIC paths, one is MCU _ IIC controlled by MCU, the other is AP _ IIC1 controlled by AP, and according to the level of the Input Vedio Input Ctr signal, the signal selects one IIC path for output. When a vehicle starts to have a backing request, the Vedio Input Ctr is at a high level, the MCU _ IIC and the DECODE _ IIC are connected, and the MCU sets or monitors the state of the decoding chip and the 360 system or the backing camera through the MCU _ IIC. When the vehicle is started without a backing request, the Vedio Input Ctr is at a low level, the AP _ IIC1 and the IIC are connected, and at the moment, after the Android system is started, the AP sets or monitors the state of the decoding chip and the 360 system or the backing camera through the AP _ IIC 1.
The encoding chip IC9 converts parallel MIPI _ DSI signals output by a Jiang SOC into serial video data, sends the serial video data to a display screen through an FPD LINK bus or a GMSL bus, simultaneously sends setting information to the display screen through the bus, and sets the screen or monitors the state of a screen end.
Further, specifically, the main chip IC1 is an SOC, which is a multi-core heterogeneous processing chip, and as shown in fig. 1, includes an MCU core with a fast start speed, an AP core with a high power, a video input unit, a video output unit, and various bus interfaces (MIPI _ CSI, MIPI _ DSI, IIC, CAN, etc.). The MCU core can run a real-time operating system, can receive and process the data at a sufficiently high speed when external events or data are generated, and the processing result can control the production process or make a quick response to the processing system within a specified time and control all real-time tasks to run coordinately. Its advantages are timely response and high reliability. The video input unit and the video output unit are hardware units for processing video data, and mainly have the functions of image capture, image format conversion, data storage, zooming function, hardware acceleration, display control and the like.
When the vehicle is just started and a backing request is made, the Android system is not started yet due to the fact that the AP core is long in starting time. The MCU is responsible for taking over at this moment, mainly controls the automobile sensing system, including looking around system and radar of backing a car, can start the car image fast.
4 ultrasonic sensors 1 ~ 4 are connected to IC2, and when having the vehicle condition of backing a car, IC2 drive sensor, perception vehicle rear state. The IC2 is connected to the IC1 via a CAN bus, and transmits vehicle rear information to the IC 1.
Vedio Input Ctrl is an IIC bus selection signal that is connected from IC1 to IC3 SPDT analog switch, and there are two IIC buses connected from IC1 to IC3, where MCU _ IIC is the MCU controlled IIC bus and AP _ IIC1 is the AP controlled IIC bus. DECODE _ IIC connects IC3 with IC 5. When the vehicle is just started and a backing request is made, the IIC _ Control is in a high level, the MCU _ IIC and the DECODE _ IIC are connected, and the MCU sets or monitors the state of the decoding chip and the 360-degree system or the backing camera through the MCU _ IIC. When the vehicle is started without a backing request, the IIC _ Control is in a low level, the AP _ IIC and the DECODE _ IIC are connected, and at the moment, after the Android system is started, the AP sets or monitors the state of the decoding chip and the 360-degree system or the backing camera through the AP _ IIC.
The decoding chip IC5 is connected to the IC4 via an FPD _ LINK bus or a GMSL bus, and may be connected by a single-ended 50 Ω coaxial cable or a 100 Ω STP. IC5 is connected to IC1 via the MIPI _ CSI bus. The IC5 is used for receiving serial video data output by the 360 system or the reversing camera, converting the serial video data into parallel MIPI _ CSI signals, sending the parallel MIPI _ CSI signals to the SOC, transmitting setting information to the 360 system or the reversing camera through a bus, and setting or monitoring the state of the 360 system or the reversing camera.
The encoding chip IC9 is connected with the IC1 through an MIPI _ DSI bus or an LVDS bus, the IC1 transmits display data to the IC6, and then the display data are connected with the IC10 through an FPD _ LINK bus or a GMSL bus. The IC9 receives the parallel video data processed by the IC1, packages the data into a serial video signal, and sends the serial video signal to the IC10 for display, and the setting information is also transmitted to the IC10 via the bus, and monitors the state of the IC 10.
The SOC is connected with an SPDT analog switch IC8 through two IIC buses (MCU _ IIC and AP _ IIC2), wherein the MCU _ IIC is IIC controlled by the MCU, the AP _ IIC2 is IIC controlled by the AP, and one IIC is selected to be Output according to the level of an input Vedio Output Ctrl signal. When the vehicle is started and has a backing request, the vehicle Output Ctrl is at a high level, the MCU _ IIC and the ENCODE _ IIC are switched on, and the MCU sets or monitors the state of the IC9 and the IC10 through the MCU _ IIC. When the vehicle is started without a backing request, the vehicle Output Ctrl is at a high level, the AP _ IIC2 and the ENCODE _ IIC are turned on, and at this time, the setting or state monitoring of the ICs 9 and 10 needs to be performed after the Android system is started.
In summary, in the invention, under the condition that a vehicle needs to be backed up when the vehicle is started, at this time, the Android system of the infotainment system of the vehicle is not started yet, at this time, the MCU capable of being started quickly can be used to check the ultrasonic radar of the vehicle and obtain the information of the obstacle behind the vehicle, and at the same time, by controlling the two signals Vedio Input Ctrl and Vedio Output Ctrl to be at high levels, IIC control rights for IC5 and IC9 are obtained, and IC4, IC5, IC9, and IC10 are set and monitored. The IC4 collects the images behind the vehicle after the successful setting and the starting are finished, the images are sent to the IC5 through a serial video data bus, and the IC5 converts the serial video data into parallel data and sends the parallel data to the SOC. The MCU sets the video input unit of the SOC, simply processes the state information of the obstacle and the video data, and transmits the processed state information to the display controller via the internal bus, and the display controller transmits the processed state information to the IC9 via the MIPI _ DSI (or LVDS) bus. The IC9 converts the parallel data to serial data that is sent to the IC10 for display. After the Android system operated by the AP core is started, two signals of Vedio Input Ctrl and Vedio Output Ctrl become low level, AP _ IIC1 and DECODE _ IIC are switched on, AP _ IIC2 and ENCODE _ IIC are switched on, at the moment, the AP core sets or monitors the state of IC4 and IC5 through AP _ IIC1, and AP _ IIC2 sets or monitors the state of IC9 and IC 10. At the moment, the AP checks and manages the video input part and the video output part, and various complex applications such as all-round display, music playing, video playing, vehicle navigation and the like can be carried out according to the requirements of users.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A method for quickly starting automobile image equipment is characterized by comprising the following steps:
when an automobile is started quickly, and an Android system in an AP core in a multi-core heterogeneous processing chip is not started yet, if an instruction of a user for carrying out a reversing operation is obtained, an automobile sensing system is checked by an MCU in the multi-core heterogeneous processing chip which is started quickly to control the automobile sensing system, wherein the MCU comprises a look-around system and a reversing radar;
collecting data through an automobile sensing system to carry out integration operation, and displaying images through a central control screen, wherein the images comprise rear-view image display, backing position early warning prompt and alarm display;
after the Android system is started, the AP core in the multi-core heterogeneous processing chip is communicated with the MCU through the bus, and the MUC returns the control right of the system to the Android system after receiving information, wherein the control right of the system comprises an automobile sensing system, the bus, a video processing unit and a radar.
2. A quick start automotive imaging system, comprising:
the multi-core heterogeneous processing chip SOC comprises an AP, an MCU, an on-chip BUS, a CAN and an IIC;
the reversing radar ECU drives the radar sensor to send out a detection signal, receives return data of the radar sensor, calculates the condition of a barrier behind the vehicle, and then sends processed information to the multi-core heterogeneous processing chip SOC through the CAN bus;
the video chip is a 360-degree look-around system or a reversing camera and sends shot video data to the decoding chip;
the decoding chip is used for carrying out format conversion on the video data, sending the video data to the multi-core heterogeneous processing chip SOC, and simultaneously sending the setting information to the 360-degree look-around system or the reversing camera;
inputting an SPDT analog signal switch, and connecting the SPDT analog signal switch with a decoding chip and a multi-core heterogeneous processing chip SOC;
when the Android system in the AP of the multi-core heterogeneous processing chip SOC is not started yet, when a vehicle is started to have a backing request, the MCU of the multi-core heterogeneous processing chip SOC sets or monitors the state of a decoding chip and a 360-degree system or a backing camera by inputting an SPDT analog signal switch; when the vehicle is started without a backing request, after the Android system is started, the AP inputs the SPDT analog signal switch to set or monitor the state of the decoding chip and the 360-degree system or the backing camera.
3. The fast-start car imaging system of claim 2, further comprising:
the output SPDT analog signal switch is connected with the coding chip and the multi-core heterogeneous processing chip SOC;
the encoding chip acquires video data through a video output port of the multi-core heterogeneous processing chip SOC and transmits the video data to a display screen;
when a vehicle starts to have a backing request, the MCU of the multi-core heterogeneous processing chip SOC sets or monitors the state of the coding chip and the display screen by outputting the SPDT analog signal switch; when the vehicle is started without a backing request, the AP of the multi-core heterogeneous processing chip SOC is connected with the coding chip through the output SPDT analog signal switch, and the coding chip and the display screen are set or state monitoring is carried out after the Android system is started.
4. The system of claim 2, wherein the video chip transmits the video data to the decoder chip via a FPD LINK bus or a GMSL bus.
5. The system of claim 2, wherein the decoding chip converts serial video data into a parallel data format of MIPI-CSI and sends the parallel data format to the multi-core heterogeneous processing chip SOC.
6. The system of claim 2, wherein the decoding chip is further configured to monitor the state of the 360-degree system or the reversing camera.
7. The system of claim 2, wherein the decoding chip is connected to the 360-degree panoramic system or the reversing camera via an FPD _ LINK bus or a GMSL bus in a single-ended 50 Ω coaxial cable or 100 Ω STP.
8. The system of claim 2, wherein the multi-core heterogeneous processing chip SOC is respectively connected to a DDR memory for storing temporary data to be used and an EMMC memory for storing data and system files.
9. The system of claim 3, wherein the encoding chip is further configured to receive parallel video data processed by the multi-core heterogeneous processing chip SOC, package the parallel video data into a serial video signal, send the serial video signal to the display screen for display, transmit the setting information to the display screen through the bus, and monitor the state of the display screen.
10. The system of claim 3, wherein the encoding chip is connected to the multi-core heterogeneous processing chip SOC via a MIPI _ DSI bus or a LVDS bus.
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Application publication date: 20210924 |
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