A camera wake-up circuit and a reverse assist imaging system

Abstract

The embodiment of the present invention discloses a camera wake-up circuit and a reversing auxiliary imaging system, wherein the camera wake-up circuit includes a connector module, a camera power supply module and a camera. When the connector module detects the ignition command output by the body control module, it outputs a first enable signal to the camera power supply module to enable the camera power supply module to power the camera, thereby collecting image signals. Compared with the prior art that the reversing auxiliary imaging system must initialize the APP application system by the SOC after the vehicle is started, and then the APP application system controls the camera to collect images, the embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, and achieve the effect of quickly displaying the reversing image, thereby reducing the delay of the reversing image relative to the user operation in the scenario of fast reversing, and improving the user experience.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of automation, and in particular to a camera wake-up circuit and a reversing auxiliary imaging system. Background Art

[0002] The reversing assist imaging system refers to a system that uses a camera installed on the vehicle to capture images of the vehicle's surroundings in real time and transmits these images to the display screen inside the vehicle, thereby helping the driver to better understand the situation around the vehicle when reversing and improving the safety and convenience of reversing. The reversing assist imaging system solves the problem of the driver needing to observe the front, back, left and right when reversing.

[0003] At present, the reversing assist imaging system has a long application system startup time and is difficult to further shorten. As a result, in the scenario of fast reversing, the display of the reversing image lags behind the user's operation, which not only reduces the user experience, but also brings certain safety hazards. Summary of the invention

[0004] The embodiment of the present invention provides a camera wake-up circuit and a reversing auxiliary imaging system. The embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, achieve the effect of quickly displaying the reversing image, and solve the technical problem of the prior art that the display of the reversing image lags behind the user's operation in the scenario of fast reversing.

[0005] In a first aspect, an embodiment of the present invention provides a camera wake-up circuit, including a connector module, a camera power supply module, and a camera;

[0006] The first end of the connector module is used to connect to the body control module, and the second end of the connector module is connected to the second end of the camera power supply module to supply power to the camera power supply module;

[0007] The third end of the connector module is connected to the first end of the camera power supply module through a connection link, and the connector module is used to output a first enable signal to the camera power supply module through the connection link when an ignition command output by the body control module is detected;

[0008] The third end of the camera power supply module is connected to the camera, and the camera power supply module is used to supply power to the camera after receiving the first enable signal, so that the camera can collect image signals.

[0009] An embodiment of the present invention provides a camera wake-up circuit, including a connector module, a camera power supply module and a camera. When the connector module detects the ignition command output by the body control module, it outputs a first enable signal to the camera power supply module to enable the camera power supply module to power the camera, thereby collecting image signals. Compared with the prior art solution that the reversing auxiliary imaging system must initialize the APP application system by the SOC after the vehicle is started, and then the APP application system controls the camera to collect images, the embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, and achieve the effect of quickly displaying the reversing image, thereby reducing the delay of the reversing image relative to the user operation in the scenario of fast reversing, and improving the user experience.

[0010] Wherein, the third end of the connector module includes an interface, and the connection link is a signal line.

[0011] In the embodiment of the present invention, the method of directly connecting the third end of the connector module to the camera power supply module through a signal line can enable the camera power supply module in the fastest way after the connector module receives the ignition command, thereby achieving the effect of quickly starting the camera for image acquisition, which can effectively shorten the reversing image display time of the reversing auxiliary imaging system, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0012] The third end of the connector module includes two interfaces, the connection link includes a CAN bus, a CAN message processing module and a signal line, the two interfaces are connected to the input end of the CAN message processing module through the CAN bus, and the first output end of the CAN message processing module is connected to the first end of the camera power supply module through the signal line;

[0013] The connector module and the CAN bus are used to transmit the CAN message sent by the body control module to the CAN message processing module, and the CAN message processing module is used to output a first enable signal to the camera power supply module when receiving the CAN message.

[0014] The embodiment of the present invention connects the third end of the connector module to the first end of the camera power supply module through the CAN message processing module, so that once a CAN message is generated during the vehicle ignition process, the CAN message processing module can even power the camera power supply module, thereby achieving the effect of quickly starting the camera for image acquisition, which can effectively shorten the reversing image display time of the reversing auxiliary imaging system, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0015] In a second aspect, an embodiment of the present invention provides a reversing auxiliary imaging system, comprising the camera wake-up circuit described in the first aspect, and further comprising: a signal detection module, a signal processing module and a display module;

[0016] The first end of the signal detection module is connected to the third end of the connector module, and is used to receive the ignition command output by the connector module; the second end of the signal detection module is connected to the fourth end of the connector module, and is used to receive the reverse command output by the connector module; the third end of the signal detection module is connected to the first end of the signal processing module, and is used to output an image display command to the signal processing module when the reverse command and the ignition command are received;

[0017] The second end of the signal processing module is connected to the camera for receiving the image signal captured by the camera. The third end of the signal processing module is connected to the display module for controlling the display module to display corresponding screen content according to the image signal when the image display instruction is received.

[0018] An embodiment of the present invention provides a reversing auxiliary imaging system. When the vehicle is ignited, the reversing auxiliary imaging system enables a camera power supply module to power the camera so as to collect image signals. When the vehicle is reversing, the signal processing module of the reversing auxiliary imaging system can process the image signal collected by the camera so that the display module displays the reversing image. By enabling the camera power supply module to power the camera when the vehicle is ignited, the embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, thereby achieving the effect of quickly displaying the reversing image, thereby reducing the delay of the reversing image relative to the user operation in the scenario of fast reversing, thereby improving the user experience.

[0019] Wherein, the signal processing module includes a signal conversion unit and a processor unit;

[0020] The first end of the processor unit is connected to the third end of the signal detection module, and is used to receive the image display instruction output by the signal detection module; the second end of the processor unit is connected to the second end of the signal conversion unit, and is used to receive the digital signal output by the signal conversion unit; the third end of the processor unit is connected to the display module, and is used to convert the digital signal into an image display signal when receiving the image display instruction, and then output the image display signal to the display module, so that the display module displays the corresponding screen content;

[0021] The first end of the signal conversion unit is connected to the camera and is used to acquire the image signal and decode the image signal to obtain a digital signal.

[0022] The signal processing module provided in the embodiment of the present invention includes a signal conversion unit and a processor unit. The signal conversion unit is used to convert the image signal collected by the camera into a digital signal that can be recognized and processed by the processor unit. The processor unit is used to convert the digital signal into an image display signal, so that when receiving an image display instruction, the image display signal is used to drive the display module to display the corresponding screen content, so as to achieve the effect of quickly displaying the reversing image when the vehicle is reversing, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0023] It also includes a power supply module, a first end of the power supply module is connected to the second end of the connector module, and the connector module is also used to supply power to the power supply module. The second and third ends of the power supply module are respectively connected to the fourth end of the processor unit and the third end of the signal conversion unit, and are used to supply power to the processor unit and the signal conversion unit.

[0024] Wherein, the camera power supply module includes a camera power supply unit and an AND gate unit, the first input end and the second input end of the AND gate unit are respectively connected to the third end of the connector module and the fifth end of the processor unit, the output end of the AND gate unit is connected to the first end of the camera power supply unit, and the AND gate unit is used to output a third enable signal to the camera power supply unit to enable the camera power supply unit when receiving the first enable signal and the second enable signal;

[0025] The processor unit is further configured to output the second enable signal to the AND gate unit when receiving the image display instruction;

[0026] The second end of the camera power supply unit is used to connect to the second end of the connector module for receiving the electric energy output by the connector module; the third end of the camera power supply unit is connected to the camera, and the camera power supply unit is used to supply power to the camera after being enabled.

[0027] The reversing auxiliary imaging system of the embodiment of the present invention includes a camera power supply unit and an AND gate unit. The AND gate unit outputs a third enable signal to the camera power supply unit to enable the camera power supply unit to supply power to the camera only after receiving a first enable signal output by the connector module and a second enable signal output by the processor unit. In the embodiment of the present invention, the AND gate unit is provided so that the processor unit can control the switch of the camera, and when the vehicle is in a reversing state, the camera is controlled to be turned on, and after the vehicle has completed reversing, the camera is controlled to be turned off. The embodiment of the present invention can achieve the effect of quickly displaying the reversing image when the vehicle is reversing, while reducing the resources consumed by the reversing auxiliary imaging system, thereby playing a role in energy saving.

[0028] In a third aspect, an embodiment of the present invention provides a reversing auxiliary imaging system, comprising the camera wake-up circuit described in the first aspect, and further comprising: a signal processing module and a display module;

[0029] The first output end of the CAN message processing module is also connected to the first end of the signal processing module, and is used to send a message existence signal to the signal processing module when receiving a CAN message, so as to instruct the signal processing module to receive decoded data; the second output end of the CAN message processing module is connected to the second end of the signal processing module, and is used to send a wake-up signal to the signal processing module when receiving the CAN message, so as to wake up the signal processing module; the third output end of the CAN message processing module is connected to the third end of the signal processing module, and is used to decode the CAN message to obtain the decoded data, and then transmit the decoded data to the signal processing module;

[0030] The fourth end of the signal processing module is connected to the first end of the camera, and is used to receive the image signal collected by the camera; the fifth end of the signal processing module is connected to the first end of the display module, and is used to control the display module to display corresponding screen content according to the image signal when it is determined that the vehicle is in a reversing state according to the decoded data.

[0031] After receiving the CAN message, the CAN message processing module in the embodiment of the present invention wakes up the signal processing module and sends the decoded data of the CAN message to the signal processing module while enabling the camera power supply module, so that the signal processing module determines the reversing state according to the decoded data, and controls the display module to display the corresponding screen content according to the image signal collected by the camera, thereby achieving the effect of quickly displaying the reversing image, which can effectively shorten the reversing image display time of the reversing auxiliary imaging system, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0032] Wherein, the signal processing module includes a signal conversion unit and a processor unit;

[0033] The first end of the processor unit is connected to the first output end of the CAN message processing module, and is used to enter the data receiving process when the message is detected to have a signal; the second end of the processor unit is connected to the second output end of the CAN message processing module, and is used to switch from the sleep state to the wake-up state when the wake-up signal is detected; the third end of the processor unit is connected to the third output end of the CAN message processing module, and is used to receive the decoded data, and determine whether it is in the reverse state according to the decoded data; the fourth end of the processor unit is connected to the second end of the signal conversion unit, and is used to receive the digital signal output by the signal conversion unit, and convert the digital signal into an image display signal; the fifth end of the processor unit is connected to the display module, and is used to output the image display signal to the display module when it is in the reverse state, so that the display module displays the corresponding screen content;

[0034] The first end of the signal conversion unit is connected to the camera, and is used to obtain the image signal and convert the image signal into a digital signal.

[0035] The signal processing module of the reversing auxiliary imaging system provided by the embodiment of the present invention includes a signal conversion unit and a processor unit. After receiving the CAN message, the CAN message processing module wakes up the processor unit and sends the decoded data to the CAN message processing module, so that the processor unit receives the decoded data and the digital signal sent by the signal conversion unit, analyzes the decoded data and converts the digital signal into an image display signal. If the reversing state is determined according to the decoded data, the processor unit drives the display module to display the corresponding screen content using the image display signal, thereby realizing the rapid display of the reversing image.

[0036] Wherein, it also includes a power supply module, the first end of the power supply module is connected to the second end of the connector module, the connector module is also used to supply power to the power supply module, the second end, the third end and the fourth end of the power supply module are respectively connected to the sixth end of the processor unit, the third end of the signal conversion unit and the first power supply end of the CAN message processing module, and are used to supply power to the processor unit, the signal conversion unit and the CAN message processing module;

[0037] The second end of the connector module is also connected to the second power supply end of the CAN message processing module for supplying power to the CAN message processing module.

[0038] Wherein, the camera power supply module includes a camera power supply unit and an AND gate unit, the first input end and the second input end of the AND gate unit are respectively connected to the first output end of the CAN message processing module and the seventh end of the processor unit, the output end of the AND gate unit is connected to the first end of the camera power supply unit, and the AND gate unit is used to output a third enable signal to the camera power supply unit to enable the camera power supply unit when receiving the first enable signal and the second enable signal;

[0039] The processor unit is further configured to output the second enable signal to the AND gate unit when determining that the vehicle is in the reverse state;

[0040] The second end of the camera power supply unit is used to connect to the second end of the connector module for receiving the electric energy output by the connector module; the third end of the camera power supply unit is connected to the camera, and the camera power supply unit is used to supply power to the camera after being enabled.

[0041] The reversing auxiliary imaging system of the embodiment of the present invention includes a camera power supply unit and an AND gate unit. After receiving the first enable signal output by the CAN message processing module and the second enable signal output by the processor unit, the AND gate unit outputs a third enable signal to the camera power supply unit to enable the camera power supply unit to power the camera. In the embodiment of the present invention, the AND gate unit is provided so that the processor unit can control the switch of the camera, control the camera to turn on when the vehicle is in a reversing state, and control the camera to turn off after the vehicle has finished reversing. The embodiment of the present invention can achieve the effect of quickly displaying the reversing image when the vehicle is reversing, while reducing the resources consumed by the reversing auxiliary imaging system, thereby playing a role in energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is one of the structural schematic diagrams of a camera wake-up circuit provided in an embodiment of the present invention.

[0043] Figure 2 The present invention provides a second structural diagram of a camera wake-up circuit according to an embodiment of the present invention.

[0044] Figure 3 The third structural diagram of a camera wake-up circuit provided in an embodiment of the present invention.

[0045] Figure 4 This is one of the structural schematic diagrams of a reversing auxiliary imaging system provided by an embodiment of the present invention.

[0046] Figure 5 The second structural schematic diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention.

[0047] Figure 6 The third structural schematic diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention.

[0048] Figure 7 The fourth structural schematic diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention.

[0049] Figure 8 The fifth structural diagram of a reversing auxiliary imaging system provided in an embodiment of the present invention.

[0050] Fig. 9 The sixth structural diagram of a reversing auxiliary imaging system provided in an embodiment of the present invention.

[0051] Reference numerals:

[0052] Connector module 10, camera power supply module 20, camera 30, CAN message processing module 40, signal detection module 50, signal processing module 60, display module 70, signal conversion unit 61, processor unit 62, power supply module 80, AND gate unit 21, camera power supply unit 22, body control module 90. DETAILED DESCRIPTION

[0053] The following description and accompanying drawings fully illustrate the specific embodiments of the present application so that those skilled in the art can practice them. The examples represent possible variations only. Unless explicitly required, separate components and functions are optional, and the order of operation can vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. The scope of the embodiments of the present application includes the entire scope of the claims, and all available equivalents of the claims. In this article, each embodiment may be represented individually or generally by the term "invention", which is only for convenience, and if more than one invention is disclosed in fact, it is not intended to automatically limit the scope of the application to any single invention or inventive concept. In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, without requiring or implying any actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed. The various embodiments are described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. As for the structures, products, etc. disclosed in the embodiments, since they correspond to the parts disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0054] In the existing reversing assist imaging system, when the vehicle is started, the SOC (System on Chips) of the reversing assist imaging system will start up, load the operating system and necessary drivers, and start and initialize the APP (application) application system to prepare to receive and process the video data from the camera. After that, under the control of the APP application system, the camera is started and starts to collect video data from the rear of the vehicle, and transmits the video data to the SOC for processing. The processing process includes steps such as image compression and decoding. The SOC then transmits the processed video data to the vehicle display screen for display.

[0055] However, in this process, since the startup time of the APP application system is long and it is difficult to shorten it further, it is difficult to optimize the time from the startup of the reversing assistance system to the display of the reversing image. As a result, in the scenario of fast reversing, the display of the reversing image on the car display screen lags behind the user's reversing operation, which not only reduces the user experience, but also brings certain safety hazards.

[0056] Based on this, in order to solve the above-mentioned technical problems, an embodiment of the present invention provides a camera wake-up circuit. The embodiment of the present invention provides a camera wake-up circuit. The embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, thereby achieving the effect of quickly displaying the reversing image, thereby reducing the delay of the reversing image relative to the user operation in the fast reversing scenario, thereby improving the user experience.

[0057] Please refer to Figure 1 , which is one of the structural diagrams of a camera wake-up circuit provided by an embodiment of the present invention, such as Figure 1 As shown, the camera wake-up circuit provided by the embodiment of the present invention includes: a connector module 10, a camera power supply module 20 and a camera 30;

[0058] The first end of the connector module 10 is used to connect to the body control module 90, and the second end of the connector module 10 is connected to the second end of the camera power supply module 20 to supply power to the camera power supply module 20;

[0059] The third end of the connector module 10 is connected to the first end of the camera power supply module 20 through a connection link. The connector module 10 is used to output a first enable signal to the camera power supply module 20 through the connection link when an ignition command output by the body control module 90 is detected.

[0060] In this embodiment, the camera wake-up circuit includes a connector module 10, wherein the connector module 10 is a device for connecting two active devices and used to transmit current or signals. The first end of the connector module 10 is used to connect to the body control module 90 on the vehicle, wherein the body control module 90 is a module that monitors the state of the vehicle and controls the corresponding actuator to work by receiving signals from various sensors and switches on the vehicle, and instructions from other control modules (such as the engine control module, the transmission control module, etc.). The third end of the connector module 10 is connected to the first end of the camera power supply module 20 through a connection link, wherein the connection link refers to a connection path for transmitting current or signals. It can be understood that the connection link in this embodiment refers to a real wired connection path, not a wireless connection path. In this embodiment, the connector module 10 is used to output a first enable signal to the camera power supply module 20 through the connection link when the ignition command output by the body control module 90 is detected, wherein the first enable signal is a signal for enabling the camera power supply module 20. Specifically, in this embodiment, when the user starts the vehicle, the body control module 90 outputs an ignition command to the connector module 10. After receiving the ignition command, the connector module 10 can transmit the first enable signal to the camera power supply module 20 to enable the camera power supply module 20. In another embodiment, the body control module 90 can also directly transmit the trigger command of the ignition button on the vehicle to the connector module 10 as the ignition command.

[0061] In addition, the second end of the connector module 10 is connected to the second end of the camera power supply module 20, and the connector module 10 is also used to supply power to the camera power supply module 20 through the second end so that the camera power supply module 20 can work normally, wherein the electric energy output by the connector module 10 to the camera power supply module 20 can be provided by a power supply, and the specific type of the power supply can be set according to actual needs, and will not be repeated in this embodiment.

[0062] The third end of the camera power supply module 20 is connected to the camera 30 . The camera power supply module 20 is used to supply power to the camera 30 after receiving the first enable signal, so that the camera 30 can collect image signals.

[0063] In this embodiment, the third end of the camera power supply module 20 is also connected to the camera 30. When the camera power supply module 20 receives the first enable signal transmitted by the connector module 10 and is activated, it starts to supply power to the camera 30, so that the camera 30 can collect image signals, and the effect of starting the camera 30 and collecting image signals after the vehicle is started is achieved. Specifically, when the camera wake-up circuit provided in the embodiment of the present invention is applied to the reversing auxiliary imaging system, the SOC of the reversing auxiliary imaging system can be connected to the camera 30. When the vehicle is started, the camera 30 can start and collect image signals, and the image signals are sent to the SOC for processing to realize the display of the reversing image. By enabling the camera power supply module 20 at the same time as the vehicle is started, so that the camera power supply module 20 supplies power to the camera 30 to start image collection, the reversing image display time of the reversing auxiliary imaging system can be further shortened, and the effect of quickly displaying the reversing image can be achieved.

[0064] As mentioned above, an embodiment of the present invention provides a camera wake-up circuit, including a connector module, a camera power supply module and a camera. When the connector module detects the ignition command output by the body control module, it will output a first enable signal to the camera power supply module to enable the camera power supply module to power the camera, thereby collecting image signals. Compared with the prior art that the reversing auxiliary imaging system must initialize the APP application system by the SOC after the vehicle is started, and then the APP application system controls the camera to collect images, the embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, and achieve the effect of quickly displaying the reversing image, thereby reducing the delay of the reversing image relative to the user operation in the scene of fast reversing, and improving the user experience.

[0065] Based on the above embodiment, the third end of the connector module 10 includes an interface, and the connection link is a signal line.

[0066] In one embodiment, please refer to Figure 2 , which is a second structural diagram of a camera wake-up circuit provided by an embodiment of the present invention, Figure 2 In the embodiment, the third end of the connector module 10 includes an interface, and the connection link between the connector module 10 and the camera power supply module 20 is a communication link in which the interface at the third end of the connector module 10 is directly connected to the first end of the camera power supply module 20 through a signal line. Specifically, the interface at the third end of the connector module 10 is an interface for outputting an ignition command. When the connector module 10 detects the ignition command output by the body control module 90, the ignition command can be transmitted to the camera power supply module 20 as a first enable signal to enable the camera power supply module 20.

[0067] In the embodiment of the present invention, the method of directly connecting the third end of the connector module to the camera power supply module through a signal line can enable the camera power supply module in the fastest way after the connector module receives the ignition command, thereby achieving the effect of quickly starting the camera for image acquisition, which can effectively shorten the reversing image display time of the reversing auxiliary imaging system, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0068] On the basis of the above embodiment, the third end of the connector module 10 includes two interfaces, the connection link includes a CAN bus, a CAN message processing module 40 and a signal line, the two interfaces are connected to the input end of the CAN message processing module 40 through the CAN bus, and the first output end of the CAN message processing module 40 is connected to the first end of the camera power supply module 20 through the signal line;

[0069] The connector module 10 and the CAN bus are used to transmit the CAN message sent by the body control module 90 to the CAN message processing module 40. The CAN message processing module 40 is used to output a first enable signal to the camera power supply module 20 when receiving the CAN message.

[0070] In another embodiment, please refer to Figure 3 , which is a third structural diagram of a camera wake-up circuit provided by an embodiment of the present invention, Figure 3In the embodiment, the third end of the connector module 10 includes two interfaces, and the two interfaces are used to realize the transmission of CAN messages, for example, one interface is used to realize the transmission of CAN_L signal, and the other interface is used to realize the transmission of CAN_H signal (CAN_L signal and CAN_H signal constitute CAN message). The connection link between the third end of the connector module 10 and the first end of the camera power supply module 20 includes a CAN bus, a CAN message processing module 40 and a signal line, wherein the CAN message processing module 40 is a module for parsing and processing CAN messages. Specifically, the two interfaces at the third end of the connector module 10 are connected to the CAN message processing module 40 through the CAN bus, and the first output end of the CAN message processing module 40 is connected to the first end of the camera power supply module 20 through the signal line. When the connector module 10 receives the CAN message sent by the body control module 90, the CAN message can be transmitted to the CAN message processing module 40 through the CAN bus. When the CAN message processing module 40 detects the CAN message, it can output a first enable signal to the camera power supply module 20 through the signal line to start the camera 30 and collect image signals. Specifically, during the vehicle ignition process, in order to ensure that the engine can start smoothly and run stably, the ignition system needs to communicate with other systems (such as the engine control system, fuel injection system, etc.) to obtain necessary parameters and instructions. In order to meet the communication requirements, a CAN message needs to be generated when the vehicle is ignited. The CAN message includes the status information of the ignition system, request instructions or other related data, which are used for transmission and sharing between various control units inside the vehicle. Therefore, once the CAN message processing module 40 receives the CAN message during the vehicle ignition process, the camera power supply module 20 can be enabled.

[0071] As mentioned above, the embodiment of the present invention connects the third end of the connector module to the first end of the camera power supply module through the CAN message processing module, so that once a CAN message is generated during the vehicle ignition process, the CAN message processing module can even power the camera power supply module, thereby achieving the effect of quickly starting the camera for image acquisition, which can effectively shorten the reversing image display time of the reversing auxiliary imaging system, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0072] The embodiment of the present invention also provides a reverse assist imaging system, comprising: Figure 2 Please refer to the camera wake-up circuit shown in Figure 4 , which is one of the structural schematic diagrams of a reversing auxiliary imaging system provided by an embodiment of the present invention, such as Figure 4 As shown, the reversing assist imaging system further includes a signal detection module 50 , a signal processing module 60 and a display module 70 .

[0073] The first end of the signal detection module 50 is connected to the third end of the connector module 10, and is used to receive the ignition command output by the connector module 10. The second end of the signal detection module 50 is connected to the fourth end of the connector module 10, and is used to receive the reversing command output by the connector module 10. The third end of the signal detection module 50 is connected to the first end of the signal processing module 60, and is used to output an image display command to the signal processing module 60 when a reversing command and an ignition command are received.

[0074] In this embodiment, the signal detection module 50 is a module for detecting specific signals. Specifically, when the connector module 10 receives the ignition command (ACC / IGN / AUTO ACC) and the reversing command (PARKING) from the body control module 90, it will further transmit the ignition command and the reversing command to the signal detection module 50. It should be noted that the ignition command and the reversing command do not need to be sent to the signal detection module 50 at the same time. Generally speaking, the generation time of the ignition command precedes the generation time of the reversing command. After detecting the ignition command and the reversing command transmitted successively by the connector module 10, the signal detection module 50 can confirm that it is currently in the reversing state, generate an image display command and transmit the image display command to the signal processing module 60, wherein the image display command is a command for instructing the signal processing module 60 to display the reversing image. It can be understood that during the reversing process of the vehicle, the signal detection module 50 continuously outputs the image display command.

[0075] The second end of the signal processing module 60 is connected to the camera 30 for receiving the image signal collected by the camera 30. The third end of the signal processing module 60 is connected to the display module 70 for controlling the display module 70 to display the corresponding screen content according to the image signal when an image display instruction is received.

[0076] In this embodiment, the signal processing module 60 is the core control module of the reversing auxiliary imaging system, which is used to analyze and process signals and data, and control other modules. On the one hand, the signal processing module 60 is connected to the camera 30, and the signal processing module 60 is used to receive the image signal collected by the camera 30, and decode, convert and analyze the image signal. On the other hand, the signal processing module 60 is also connected to the display module 70, wherein the display module 70 is a module for displaying video images, for example, the display module 70 can be a TFT (Thin Film Transistor) display screen. After receiving the image display instruction output by the signal detection module 50, the signal processing module 60 wakes up the APP application system from the sleep state, and then decodes and converts the image signal into LVDS (Low-VoltageDifferential Signaling, low voltage image display signal), and drives the TFT display screen to display the corresponding reversing image, thereby achieving the effect of quickly displaying the reversing image.

[0077] As described above, an embodiment of the present invention provides a reversing auxiliary imaging system. When the vehicle is ignited, the reversing auxiliary imaging system enables the camera power supply module to power the camera so as to collect image signals. When the vehicle is reversing, the signal processing module of the reversing auxiliary imaging system can process the image signal collected by the camera so that the display module displays the reversing image. By enabling the camera power supply module to power the camera when the vehicle is ignited, the embodiment of the present invention can further shorten the reversing image display time of the reversing auxiliary imaging system, thereby achieving the effect of quickly displaying the reversing image, thereby reducing the delay of the reversing image relative to the user operation in the scenario of fast reversing, thereby improving the user experience.

[0078] Based on the above embodiment, the signal processing module 60 includes a signal conversion unit 61 and a processor unit 62 .

[0079] The first end of the processor unit 62 is connected to the third end of the signal detection module 50, and is used to receive the image display instruction output by the signal detection module 50; the second end of the processor unit 62 is connected to the second end of the signal conversion unit 61, and is used to receive the digital signal output by the signal conversion unit 61; the third end of the processor unit 62 is connected to the display module 70, and is used to convert the digital signal into an image display signal after receiving the image display instruction, and then output the image display signal to the display module 70, so that the display module 70 displays the corresponding screen content.

[0080] The first end of the signal conversion unit 61 is connected to the camera 30 and is used to acquire an image signal and decode the image signal to obtain a digital signal.

[0081] In one embodiment, please refer to Figure 5 , which is the second structural schematic diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention. Figure 5 In the embodiment, the signal processing module 60 includes a processor unit 62 and a signal conversion unit 61, wherein the processor unit 62 is the core control unit of the reversing assist imaging system, which is used to realize the control of other modules and the data analysis function. The processor unit 62 can be a SOC or an MCU (Microcontroller Unit), etc. The specific type can be set according to actual needs and is not specifically limited in this embodiment. The signal conversion unit 61 is used to decode the image signal collected by the camera 30, convert it into a digital signal that can be recognized by the processor unit 62, and transmit the digital signal to the processor unit 62. For example, the signal conversion unit 61 can use a deserializer, and the deserializer can decode the image signal into a CSI digital video signal. In one embodiment, the processor unit 62 can initialize the configuration of the signal conversion unit 61 after power-on to set the working parameters of the signal conversion unit 61.

[0082] The processor unit 62 is used to receive the digital signal output by the signal conversion unit 61. At the same time, the processor unit 62 detects the image display instruction output by the signal detection module 50. When the image display instruction is detected, the received digital signal is converted into an image display signal, wherein the image display signal is a signal for realizing image screen display. In this embodiment, the image display signal can be an RGB signal, a MIPI (Mobile Industry Processor Interface) signal, a LVDS and an HDMI (High Definition Multimedia Interface) signal, etc., which can be set according to the actual interface type of the display module, and is not specifically limited in this embodiment. After the image display signal is converted, the processor unit 62 further outputs the image display signal to the display module 70, thereby driving the display module 70 to display the screen content corresponding to the image signal collected by the camera 30, thereby realizing the effect of quickly displaying the reversing image.

[0083] As mentioned above, the signal processing module provided in the embodiment of the present invention includes a signal conversion unit and a processor unit. The signal conversion unit is used to convert the image signal collected by the camera into a digital signal that can be recognized and processed by the processor unit. The processor unit is used to convert the digital signal into an image display signal, so that when receiving an image display instruction, the image display signal is used to drive the display module to display the corresponding screen content, so as to achieve the effect of quickly displaying the reversing image when the vehicle is reversing, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0084] On the basis of the above embodiment, it also includes a power supply module 80, the first end of the power supply module 80 is connected to the second end of the connector module 10, and the connector module 10 is also used to supply power to the power supply module 80; the second end and the third end of the power supply module 80 are respectively connected to the fourth end of the processor unit 62 and the third end of the signal conversion unit 61, and are used to supply power to the processor unit 62 and the signal conversion unit 61.

[0085] In one embodiment, if Figure 5 As shown, the reversing assist imaging system provided in the embodiment of the present invention further includes a power supply module 80, wherein the power supply module 80 is a module for providing electric energy. In this embodiment, the connector module 10 provides electric energy for the power supply module 80, and the power supply module 80 includes a voltage conversion circuit, which is used to convert the voltage provided by the connector module 10 into a first voltage applicable to the processor unit 62 and a second voltage applicable to the signal conversion unit 61, and then output the first voltage and the second voltage to the processor unit 62 and the signal conversion unit 61 respectively, so that the processor unit 62 and the signal conversion unit 61 can work normally.

[0086] Based on the above embodiment, the camera power supply module 20 includes a camera power supply unit 22 and an AND gate unit 21, the first input end and the second input end of the AND gate unit 21 are respectively connected to the third end of the connector module 10 and the fifth end of the processor unit 62, the output end of the AND gate unit 21 is connected to the first end of the camera power supply unit 22, and the AND gate unit 21 is used to output a third enable signal to the camera power supply unit 22 to enable the camera power supply unit 22 when the first enable signal and the second enable signal are received.

[0087] The processor unit 62 is further configured to output a second enable signal to the AND gate unit 21 when receiving an image display instruction.

[0088] The second end of the camera power supply unit 22 is used to connect to the second end of the connector module 10 for receiving the electric energy output by the connector module 10; the third end of the camera power supply unit 22 is connected to the camera 30, and the camera power supply unit 22 is used to supply power to the camera 30 after being enabled.

[0089] In one embodiment, please refer to Figure 6 , which is a third structural schematic diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention. The camera power supply module 20 includes a camera power supply unit 22 and an AND gate unit 21, wherein the AND gate unit 21 includes an AND gate, wherein the first input end and the second input end of the AND gate are respectively used to receive the first enable signal output by the connector module 10 and the second enable signal output by the processor unit 62, wherein the first enable signal and the second enable signal are both signals for controlling and enabling the camera power supply unit 22. The output end of the AND gate is connected to the camera power supply unit 22, wherein the camera power supply unit 22 is a unit for powering the camera 30, and the AND gate outputs a third enable signal to the camera power supply unit 22 when receiving the first enable signal and the second enable signal, and the third enable signal is a signal for enabling the camera power supply unit 22. Exemplarily, for example, the first enable signal and the second enable signal are both high-level signals, and the two input ends of the AND gate output the third enable signal to the camera power supply unit 22 only when both receive high-level signals.

[0090] In this embodiment, the processor unit 62 outputs a second enable signal to the AND gate unit 21 when receiving the image display instruction, that is, when the vehicle is ignited and in reverse, the processor unit 62 outputs a second enable signal to the AND gate unit 21 after receiving the image display instruction output by the signal detection module 50. When the vehicle is ignited, the connector module 10 can output the first enable signal to the AND gate unit 21. After receiving the first enable signal and the second enable signal, the AND gate unit 21 outputs a third enable signal to the camera power supply unit 22, and the camera power supply unit 22 supplies power to the camera 30 after being enabled.

[0091] In one embodiment, when the vehicle is ignited (ACC / IGN / AUTO ACC) and reversed (PARKING), the connector module 10 can output a first enable signal to the AND gate unit 21, and the processor unit 62 outputs a second enable signal to the AND gate unit 21 after receiving the image display instruction output by the signal detection module 50. Then, the AND gate unit 21 outputs a third enable signal to the camera power supply unit 22, so that the camera power supply unit 22 supplies power to the camera 30, and the camera 30 is powered on and started (startup time 400ms). At the same time, the processor unit 62 wakes up the APP application system of reverse auxiliary imaging from the sleep state and initializes the signal conversion unit 61. After the initialization is completed, the processor unit 62 receives the CSI digital video signal output by the signal conversion unit 61, converts the received CSI digital video signal into LVDS, and outputs it to the display module 70, thereby driving the display module 70 to display the screen content corresponding to the image signal collected by the camera 30.

[0092] When the user has finished reversing and shifted gears, the signal detection module 50 does not output the image display instruction to the processor unit 62. When the processor unit 62 does not receive the image display instruction, it stops outputting the second enable signal to the AND gate unit 21, so that the camera power supply unit 22 no longer supplies power to the camera 30, and the camera 30 is turned off. At the same time, the processor unit 62 controls the APP application system to re-enter the dormant state and wait for the next wake-up.

[0093] As mentioned above, the reversing auxiliary imaging system of the embodiment of the present invention includes a camera power supply unit and an AND gate unit. The AND gate unit outputs a third enable signal to the camera power supply unit to enable the camera power supply unit to supply power to the camera only after receiving the first enable signal output by the connector module and the second enable signal output by the processor unit. In the embodiment of the present invention, the AND gate unit is provided so that the processor unit can control the switch of the camera, control the camera to turn on when the vehicle is in a reversing state, and control the camera to turn off after the vehicle has completed reversing. The embodiment of the present invention can achieve the effect of quickly displaying the reversing image when the vehicle is reversing, while reducing the resources consumed by the reversing auxiliary imaging system, thereby playing a role in energy saving.

[0094] In one embodiment, the present invention also provides another reversing assist imaging system, please refer to Figure 7 , which is a fourth structural diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention, such as Figure 7 As shown, the reversing image auxiliary imaging system provided by the embodiment of the present invention includes the following Figure 3 The camera wake-up circuit shown also includes: a signal processing module 60 and a display module 70;

[0095] The first output end of the CAN message processing module 40 is also connected to the first end of the signal processing module 60, and is used to send a message existence signal to the signal processing module 60 when a CAN message is received, so as to indicate that the signal processing module 60 receives decoded data; the second output end of the CAN message processing module 40 is connected to the second end of the signal processing module 60, and is used to send a wake-up signal to the signal processing module 60 when a CAN message is received, so as to wake up the signal processing module 60; the third output end of the CAN message processing module 40 is connected to the third end of the signal processing module 60, and is used to decode the CAN message to obtain decoded data, and then transmit the decoded data to the signal processing module 60.

[0096] In this embodiment, when the CAN message processing module 40 receives the CAN message output by the connector module 10, it will output a message existence signal to the signal processing module 60, wherein the message existence signal is a signal used to characterize the current existence of the CAN message. It can be understood that in this embodiment, the message existence signal and the first enable signal are substantially the same signal, for example, substantially the same high-level signal. In one embodiment, the first output end of the CAN message processing module 40 can be implemented through the INH (Inhibit) pin. After receiving the message existence signal, the signal processing module 60 can trigger the data receiving process to prepare to receive the decoded data sent by the CAN message processing module 40. In addition, the CAN message processing module 40 is also used to send a wake-up signal to the signal processing module 60 when receiving the CAN message, wherein the wake-up signal is used to wake up the signal processing module 60, so that the signal processing module 60 switches from a dormant state to a wake-up state to prepare to receive the decoded data and process the decoded data. In one embodiment, the second output end of the CAN message processing module 40 can be implemented through a WAKE (wake-up) pin. After receiving the CAN message, the CAN message processing module 40 decodes the CAN message and parses the data and instructions in the CAN message. After decoding is completed and the decoded data is obtained, the CAN message processing module 40 sends the decoded data to the signal processing module 60 through the third output terminal for further processing. In one embodiment, the third output terminal of the CAN message processing module 40 can be implemented through a UART (Universal Asynchronous Receiver and Transmitter) pin.

[0097] The fourth end of the signal processing module 60 is connected to the first end of the camera 30 for receiving the image signal captured by the camera 30; the fifth end of the signal processing module 60 is connected to the first end of the display module 70 for controlling the display module 70 to display corresponding screen content according to the image signal when it is determined that the vehicle is in a reversing state according to the decoded data.

[0098] In this embodiment, after switching to the awake state, the signal processing module 60 is used to receive the image signal collected by the camera 30 and receive the decoded data, parse the data and instructions in the decoded data, and determine whether there is an ignition instruction and a reversing instruction in the decoded data. In the case of an ignition instruction and a reversing instruction, the signal processing module 60 determines that the current state is in the reversing state, and controls the display module 70 to display the corresponding screen content according to the image signal. The specific method of controlling the display module 70 to display the screen content can be referred to the above embodiment, and will not be repeated in this embodiment.

[0099] As mentioned above, after receiving the CAN message, the CAN message processing module in the embodiment of the present invention wakes up the signal processing module and sends the decoded data of the CAN message to the signal processing module while enabling the camera power supply module, so that the signal processing module determines the reversing state according to the decoded data, and controls the display module to display the corresponding screen content according to the image signal collected by the camera, thereby achieving the effect of quickly displaying the reversing image, which can effectively shorten the reversing image display time of the reversing auxiliary imaging system, reduce the delay of the reversing image relative to the user operation, and improve the user experience.

[0100] Based on the above embodiment, the signal processing module 60 includes a signal conversion unit 61 and a processor unit 62 .

[0101] The first end of the processor unit 62 is connected to the first output end of the CAN message processing module 40, and is used to enter the data receiving process when a signal is detected in the message; the second end of the processor unit 62 is connected to the second output end of the CAN message processing module 40, and is used to switch from the sleep state to the wake-up state when a wake-up signal is detected; the third end of the processor unit 62 is connected to the third output end of the CAN message processing module 40, and is used to receive decoded data, and determine whether it is in the reversing state based on the decoded data; the fourth end of the processor unit 62 is connected to the second end of the signal conversion unit 61, and is used to receive the digital signal output by the signal conversion unit 61, and convert the digital signal into an image display signal; the fifth end of the processor unit 62 is connected to the display module 70, and is used to output the image display signal to the display module 70 when it is in the reversing state, so that the display module 70 displays the corresponding screen content.

[0102] A first end of the signal conversion unit 61 is connected to the camera 30 and is used to obtain an image signal and convert the image signal into a digital signal.

[0103] In one embodiment, please refer to Figure 8 , which is the fifth structural schematic diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention. Figure 8In the embodiment, the signal processing module 60 includes a signal conversion unit 61 and a processor unit 62. The first end of the processor unit 62 is used to detect the message existence signal output by the CAN message processing module 40. When it is determined that the message existence signal is received, the data receiving process is entered to prepare to receive the decoded data sent by the CAN message processing module 40. The second end of the processor unit 62 is used to detect the wake-up signal sent by the CAN message processing module 40. When the wake-up signal is received, the processor unit 62 is switched from the dormant state to the awake state. It can be understood that the processor unit 62 can only receive the message existence signal and enter the data receiving process to receive the decoded data after entering the awake state, and it is also necessary to receive the digital signal output by the signal conversion unit 61. The third end of the processor unit 62 is used to receive the decoded data output by the CAN message processing module 40, and analyze the decoded data to determine whether there is an ignition instruction and a reversing instruction in the decoded data. When there is an ignition instruction and a reversing instruction, the processor unit 62 determines that it is currently in the reversing state. The fourth end of the processor unit 62 is used to receive the digital signal output by the signal conversion unit 61, and after converting the digital signal into an image display signal, when it is determined that the vehicle is currently in a reversing state, the image display signal is further output to the display module 70, so that the display module 70 displays the screen content corresponding to the image signal.

[0104] In addition, the specific working principles of the signal conversion unit 61 and the display module 70 may refer to the description of the signal conversion unit 61 and the display module 70 in the above embodiment, and will not be repeated in this embodiment.

[0105] As mentioned above, the signal processing module of the reversing auxiliary imaging system provided by the embodiment of the present invention includes a signal conversion unit and a processor unit. After receiving the CAN message, the CAN message processing module wakes up the processor unit and sends the decoded data to the CAN message processing module, so that the processor unit receives the decoded data and the digital signal sent by the signal conversion unit, analyzes the decoded data and converts the digital signal into an image display signal. If the reversing state is determined according to the decoded data, the processor unit drives the display module to display the corresponding screen content using the image display signal, thereby realizing the rapid display of the reversing image.

[0106] On the basis of the above embodiment, it further includes a power supply module 80, the first end of the power supply module 80 is connected to the second end of the connector module 10, the connector module 10 is also used to supply power to the power supply module 80, the second end, the third end and the fourth end of the power supply module 80 are respectively connected to the sixth end of the processor unit 62, the third end of the signal conversion unit 61 and the first power supply end of the CAN message processing module 40, and are used to supply power to the processor unit 62, the signal conversion unit 61 and the CAN message processing module 40;

[0107] The second end of the connector module 10 is also connected to the second power supply end of the CAN message processing module 40 for supplying power to the CAN message processing module 40 .

[0108] like Figure 8 As shown, the reversing assist imaging system in this embodiment also includes a power supply module 80. In this embodiment, the connector module 10 provides power to the power supply module 80. The power supply module 80 includes a voltage conversion circuit. The voltage conversion circuit is used to convert the voltage provided by the connector module 10 into a first voltage applicable to the processor unit 62, a second voltage applicable to the signal conversion unit 61, and a third voltage applicable to the CAN message processing module 40, and then output the first voltage, the second voltage, and the third voltage to the processor unit 62, the signal conversion unit 61, and the CAN message processing module 40, respectively, so that the processor unit 62, the signal conversion unit 61, and the CAN message processing module 40 can work normally.

[0109] In addition, in this embodiment, the second end of the connector module 10 is also connected to the second power supply end of the CAN message processing module 40 for supplying power to the CAN message processing module 40 to meet the voltage requirements of different circuits inside the CAN message processing module 40.

[0110] On the basis of the above embodiment, the camera power supply module 20 includes a camera power supply unit 22 and an AND gate unit 21, wherein the first input end and the second input end of the AND gate unit 21 are respectively connected to the first output end of the CAN message processing module 40 and the seventh end of the processor unit 62, and the output end of the AND gate unit 21 is connected to the first end of the camera power supply unit 22, and the AND gate unit 21 is used to output a third enable signal to the camera power supply unit 22 when receiving the first enable signal and the second enable signal, so as to enable the camera power supply unit 22;

[0111] The processor unit 62 is further configured to output a second enable signal to the AND gate when determining that the vehicle is in a reverse state;

[0112] The second end of the camera power supply unit 22 is used to connect to the second end of the connector module 10 for receiving the electric energy output by the connector module 10; the third end of the camera power supply unit 22 is connected to the camera 30, and the camera power supply unit 22 is used to supply power to the camera 30 after being enabled.

[0113] In one embodiment, please refer to Fig. 9 , which is a sixth structural diagram of a reversing auxiliary imaging system provided by an embodiment of the present invention. Fig. 9As shown, the camera power supply module 20 includes a camera power supply unit 22 and an AND gate unit 21, wherein the AND gate unit 21 includes an AND gate, wherein the first input end and the second input end of the AND gate are respectively used to receive the first enable signal output by the CAN message processing module 40 and the second enable signal output by the processor unit 62, and the output end of the AND gate is connected to the camera power supply unit 22. When receiving the first enable signal and the second enable signal, the AND gate outputs a third enable signal to the camera power supply unit 22.

[0114] In this embodiment, the processor unit 62 outputs a second enable signal to the AND gate unit 21 when it is determined that the vehicle is in a reversing state, that is, when the vehicle is ignited and reversing, the processor unit 62 outputs a second enable signal to the AND gate unit 21 when it is determined according to the decoded data that the vehicle is currently in a reversing state. When a CAN message exists, the CAN message processing module 40 can output a first enable signal to the AND gate unit 21. After receiving the first enable signal and the second enable signal, the AND gate unit 21 outputs a third enable signal to the camera power supply unit 22, and the camera power supply unit 22 supplies power to the camera 30 after being enabled.

[0115] In one embodiment, when the vehicle is ignited (ACC / IGN / AUTO ACC) and reversed (PARKING), the CAN message processing module 40 can output a first enable signal to the AND gate unit 21, and the processor unit 62 outputs a second enable signal to the AND gate unit 21 after determining that the vehicle is currently in the reverse state according to the decoded data. Then, the AND gate unit 21 outputs a third enable signal to the camera power supply unit 22, so that the camera power supply unit 22 supplies power to the camera 30, and the camera 30 is powered on and started (startup time 400ms). At the same time, the processor unit 62 wakes up the APP application system of the reverse auxiliary imaging from the sleep state and initializes the signal conversion unit 61. After the initialization is completed, the processor unit 62 receives the CSI digital video signal output by the signal conversion unit 61, converts the received CSI digital video signal into LVDS, and outputs it to the display module 70, thereby driving the display module 70 to display the screen content corresponding to the image signal collected by the camera 30.

[0116] When the user has finished reversing and shifted gears, the processor unit 62 determines that the vehicle is not in the reversing state, and stops the AND gate unit 21 from outputting the second enable signal, so that the camera power supply unit 22 no longer supplies power to the camera 30, and the camera 30 is turned off. At the same time, the processor unit 62 controls the APP application system to re-enter the dormant state and wait for the next wake-up.

[0117] As mentioned above, the reversing auxiliary imaging system of the embodiment of the present invention includes a camera power supply unit and an AND gate unit. After receiving the first enable signal output by the CAN message processing module and the second enable signal output by the processor unit, the AND gate unit outputs a third enable signal to the camera power supply unit to enable the camera power supply unit to power the camera. In the embodiment of the present invention, by setting the AND gate unit, the processor unit can control the switch of the camera, control the camera to turn on when the vehicle is in a reversing state, and control the camera to turn off after the vehicle has finished reversing. The embodiment of the present invention can achieve the effect of quickly displaying the reversing image when the vehicle is reversing, while reducing the resources consumed by the reversing auxiliary imaging system, thereby playing a role in energy saving.

[0118] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the embodiments of the present invention are not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention are described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.

Claims

1. A reversing assist imaging system, characterized in that: It includes a camera wake-up circuit, a signal processing module and a display module; the camera wake-up circuit includes a connector module, a camera power supply module and a camera; The first end of the connector module is used to connect to the body control module, and the second end of the connector module is connected to the second end of the camera power supply module to supply power to the camera power supply module; The third end of the connector module is connected to the first end of the camera power supply module through a connection link, the third end of the connector module includes two interfaces, the connection link includes a CAN bus, a CAN message processing module and a signal line, the two interfaces are connected to the input end of the CAN message processing module through the CAN bus, and the first output end of the CAN message processing module is connected to the first end of the camera power supply module through the signal line; The connector module and the CAN bus are used to transmit the CAN message sent by the body control module to the CAN message processing module, and the CAN message processing module is used to output a first enable signal to the camera power supply module when receiving the CAN message; The third end of the camera power supply module is connected to the camera, and the camera power supply module is used to supply power to the camera after receiving the first enable signal, so that the camera collects image signals; The first output end of the CAN message processing module is also connected to the first end of the signal processing module, and is used to send a message existence signal to the signal processing module when receiving a CAN message, so as to instruct the signal processing module to receive decoded data; the second output end of the CAN message processing module is connected to the second end of the signal processing module, and is used to send a wake-up signal to the signal processing module when receiving the CAN message, so as to wake up the signal processing module; the third output end of the CAN message processing module is connected to the third end of the signal processing module, and is used to decode the CAN message to obtain the decoded data, and then transmit the decoded data to the signal processing module; The fourth end of the signal processing module is connected to the first end of the camera, and is used to receive the image signal collected by the camera; the fifth end of the signal processing module is connected to the first end of the display module, and is used to control the display module to display corresponding screen content according to the image signal when it is determined that the vehicle is in a reversing state according to the decoded data.

2. The reversing assist imaging system according to claim 1, characterized in that: The signal processing module includes a signal conversion unit and a processor unit; The first end of the processor unit is connected to the first output end of the CAN message processing module, and is used to enter the data receiving process when the message is detected to have a signal; the second end of the processor unit is connected to the second output end of the CAN message processing module, and is used to switch from the sleep state to the wake-up state when the wake-up signal is detected; the third end of the processor unit is connected to the third output end of the CAN message processing module, and is used to receive the decoded data, and determine whether it is in the reverse state according to the decoded data; the fourth end of the processor unit is connected to the second end of the signal conversion unit, and is used to receive the digital signal output by the signal conversion unit, and convert the digital signal into an image display signal; the fifth end of the processor unit is connected to the display module, and is used to output the image display signal to the display module when it is in the reverse state, so that the display module displays the corresponding screen content; The first end of the signal conversion unit is connected to the camera, and is used to obtain the image signal and convert the image signal into a digital signal.

3. The reversing assist imaging system according to claim 2, characterized in that: It also includes a power supply module, the first end of the power supply module is connected to the second end of the connector module, the connector module is also used to supply power to the power supply module, the second end, the third end and the fourth end of the power supply module are respectively connected to the sixth end of the processor unit, the third end of the signal conversion unit and the first power supply end of the CAN message processing module, and are used to supply power to the processor unit, the signal conversion unit and the CAN message processing module; The second end of the connector module is also connected to the second power supply end of the CAN message processing module for supplying power to the CAN message processing module.

4. The reversing assist imaging system according to claim 2, characterized in that: The camera power supply module includes a camera power supply unit and an AND gate unit, wherein a first input end and a second input end of the AND gate unit are respectively connected to a first output end of the CAN message processing module and a seventh end of the processor unit, and an output end of the AND gate unit is connected to a first end of the camera power supply unit, and the AND gate unit is used to output a third enable signal to the camera power supply unit to enable the camera power supply unit when receiving the first enable signal and the second enable signal; The processor unit is further configured to output the second enable signal to the AND gate unit when determining that the vehicle is in the reverse state; The second end of the camera power supply unit is used to connect to the second end of the connector module, and is used to receive the electric energy output by the connector module; The third end of the camera power supply unit is connected to the camera, and the camera power supply unit is used to supply power to the camera after being enabled.

Images