CN216086672U - Vehicle-mounted Ethernet intelligent gateway system with imaging adjusting function - Google Patents
Vehicle-mounted Ethernet intelligent gateway system with imaging adjusting function Download PDFInfo
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Abstract
The utility model provides a vehicle-mounted Ethernet intelligent gateway system with an imaging adjusting function, which comprises: the intelligent image processing gateway and the vehicle-mounted Ethernet camera are connected with the intelligent image processing gateway; the intelligent image processing gateway comprises: gateway body, install the PCBA circuit board on the body, the PCBA circuit board is equipped with: AVB/TSN Ethernet gateway, ISP chip, connector. The ISP chip is used for processing the image in the original bayer format collected by the vehicle-mounted Ethernet camera or adjusting and correcting parameters of a lens and an image sensor in the vehicle-mounted Ethernet camera. By the technical scheme provided by the utility model, the Sensor data of the camera is uniformly converted into an Ethernet interface at the transmitting end and is connected to the platform through the intelligent image processing gateway, and the ISP chip and the image compression can be forwarded after being processed in a centralized way by the intelligent image processing gateway. The data of the video can be simply shared by a plurality of SOCs, and can be flexibly switched in the intelligent image processing gateway.
Description
Technical Field
The utility model relates to the field of intelligent gateway systems, in particular to a vehicle-mounted Ethernet intelligent gateway system with an imaging adjusting function.
Background
The intelligent automobile is a comprehensive system integrating functions of environment perception, planning decision, multi-level auxiliary driving and the like, and the intelligent automobile mainly provides safety and comfort of the automobile and provides an excellent human-vehicle exchange interface at present, and functions of vehicle-mounted entertainment, automatic driving, automobile safety and the like become standard configuration of the intelligent automobile. The functions are realized on the basis of visual images, images are acquired through videos, the images are analyzed in real time, and automatic driving, vehicle-mounted entertainment, automobile safety decision and the like are carried out according to the image analysis results. However, as shown in fig. 1, in the conventional image acquisition system, firstly, a vehicle-mounted camera using an LVDS interface is used to acquire an image, then an MIPI signal is formed, the MIPI image signal of a Sensor is converted into a private serial protocol through an FPD-link Serializer connector, then the private serial protocol is transmitted through an FPD-link coax or stp transmission medium, then the De-Serializer connector in the FPD-link III hub is used at a receiving end to convert the MIPI signal into an MIPI signal, and then the MIPI signal is transmitted to a platform to perform image processing, such as processing by an automatic driving platform or a look-around platform. And the protocol of the connector of the camera produced by different manufacturers is private and not universal. If replaced with another camera, the connector needs to be replaced again due to incompatibility of the proprietary protocols. In fig. 2, a camera in the prior art integrates an ISP chip and an image processor. In addition, there is also a vehicle-mounted camera based on an interface of LVDS transmission, as shown in fig. 3, the vehicle-mounted camera is not provided with an ISP chip, and the ISP chip is arranged on an SOC processing chip bound with the camera, so that data acquisition can be performed only through the SOC processing chip, and video data cannot be directly acquired, which limits applications in various occasions.
Disclosure of Invention
In order to solve the defects in the prior art, the vehicle-mounted Ethernet intelligent gateway system with the imaging adjusting function comprises: the intelligent image processing gateway and the vehicle-mounted Ethernet camera are connected with the intelligent image processing gateway; the intelligent image processing gateway comprises: gateway body, install the PCBA circuit board on the body, the PCBA circuit board is equipped with: the system comprises an AVB/TSN Ethernet gateway, an ISP chip and a connector, wherein the ISP chip and the connector are respectively connected with the AVB/TSN Ethernet gateway;
the on-vehicle ethernet camera includes: the camera comprises a lens, an image sensor and an Ethernet PHY chip, wherein the image sensor is connected with the Ethernet PHY chip;
the ISP chip is used for processing the image in the original bayer format acquired by the vehicle-mounted Ethernet camera or adjusting and correcting parameters of a lens and an image sensor in the vehicle-mounted Ethernet camera.
An optional vehicle-mounted Ethernet intelligent gateway system with an imaging regulation function is characterized in that an ISP chip comprises an ISP logic circuit and a firmware, and the firmware acquires image statistical information of the ISP logic circuit unit, processes the image statistical information and then controls the ISP logic circuit unit in a feedback mode.
A vehicle-mounted Ethernet intelligent gateway system with an imaging adjusting function can further optionally provide video data in an original bayer format for an external SoC Processor chip directly, wherein the SoC chip is provided with an ISP chip and is directly connected with a vehicle-mounted Ethernet camera to obtain data in the original bayer format of an image;
and the ISP chip performs image adjustment on the original bayer format data to output an RGB image.
The utility model provides a vehicle-mounted ethernet intelligent gateway system with formation of image regulatory function, further can select, intelligent gateway system provides the transmission interface of video data for external SoC Processor chip, and wherein, SoC Processor chip is connected the video data of obtaining after the ISP chip in intelligent image processing gateway handles through being connected with intelligent image processing gateway.
A vehicle Ethernet intelligent gateway system with imaging regulation function, further optional, the vehicle Ethernet transmission bus located in vehicle Ethernet through camera and intelligent image processing gateway includes 1G or 10G transmission rate shielding STP single twisted pair;
or 10G vehicle ethernet transmission bus comprises optical fiber, using optical fiber as transmission medium.
A vehicle-mounted Ethernet intelligent gateway system with an imaging adjusting function is further provided, and a connector at least comprises an Ethernet PHY chip; the external video or image data is connected with the PHY chip of the Ethernet through a vehicle-mounted Ethernet bus;
the PHY chip of ethernet includes at least 10G of electrical interface PHY chip, or 10G of optical interface PHY chip.
An in-vehicle ethernet intelligent gateway system with imaging adjustment function, further optionally, the connector further comprises: CAN chip, RGMII chip, PCIE-4.0PHY chip.
An on-vehicle ethernet intelligent gateway system with imaging regulatory function, further optionally, ethernet PHY chip includes special ASIC chip or realizes based on FPGA chip.
A vehicle-mounted Ethernet intelligent gateway system with an imaging regulation function is further provided, and the transmission protocol of an Ethernet PHY chip is based on an IEEE1722AVTP audio and video transmission protocol.
A vehicle-mounted Ethernet intelligent gateway system with an imaging regulation function is further provided, and an AVB/TSN Ethernet gateway can analyze a data packet in a network layer; the data packet conforming to the AVB/TSN protocol can be converted into the data packet in other standard protocol formats, or the data packet in other protocols can be converted into the AVB/TSN protocol; or the data packet of the AVB/TSN protocol can be analyzed and packaged according to the format of the AVB/TSN protocol.
A vehicle-mounted Ethernet intelligent gateway system with an imaging regulation function is further provided, wherein a camera video signal is input to an AVB/TSN Ethernet gateway in an intelligent image processing gateway for analysis after passing through an Ethernet PHY chip;
or the video input signal is input to an external Ethernet switch through a transmission medium for switching, and then the signal is output to an Ethernet PHY chip and then input to an AVB/TSN Ethernet gateway in the intelligent image processing gateway for analysis.
An on-vehicle ethernet intelligent gateway system with formation of image regulatory function, further optional, still includes: and the H.264 decoding chip is used for compressing the video data to be transmitted and converting the compressed video data into a protocol conforming to H.264 for output.
The vehicle-mounted Ethernet intelligent gateway system with the imaging adjusting function further comprises an MCU chip, wherein the MCU chip is connected with the AVB/TSN Ethernet gateway.
By implementing the technical scheme of the utility model, the utility model can obtain the following beneficial technical effects:
(1) sensor data of the camera is uniformly converted into an Ethernet interface at a transmitting end and is connected to the platform through a switch. The original data enters the SOC chip through a high-speed interface. E.g., the platform has no high speed interface to access compressed data using RGMII. If the SOC net port is more than the Sensor, the connection can also be directly carried out. The ISP and image compression may be centralized at the switch and forwarded.
(2) The interface is general, and the camera can be changed at will, and the ISP parameter of camera can be centralized management in intelligent gateway, and the camera need not to dispose the ISP chip, like this, only need an ISP chip can be complete rather than the formation of image processing of the camera that is connected, reduce cost.
The number of the cameras is theoretically unlimited, and only the PHY interface in an external switch or a capacity-expansion intelligent image processing gateway is added;
(3) the data of the video can be simply shared by a plurality of SOCs, and can be flexibly switched in the intelligent image processing gateway.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a schematic structural diagram of a video signal acquisition scheme in the prior art;
fig. 2 is a schematic diagram of a hardware structure of a camera in the prior art.
Fig. 3 is a schematic diagram of a hardware structure of the camera according to the present invention.
Fig. 4 is a schematic structural diagram of the vehicle-mounted ethernet intelligent gateway system of the present invention.
Fig. 5 is a schematic structural diagram of the vehicular ethernet intelligent gateway system with the external switch according to the present invention.
Fig. 6 is a schematic view of the video stream processing structure of the ISP chip according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects, and effects herein, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout. For the sake of simplicity, the drawings are schematic representations of relevant parts of the utility model and are not intended to represent actual structures as products. In addition, for simplicity and clarity of understanding, only one of the components having the same structure or function is schematically illustrated or labeled in some of the drawings.
The term "connected" in the present invention may include direct connection, indirect connection, communication connection, and electrical connection, unless otherwise specified.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, values, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, values, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items
It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger automobiles including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including a variety of boats, ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-petroleum sources). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as both gasoline-powered and electric-powered vehicles.
The embodiment provides a vehicle-mounted ethernet intelligent gateway system with an imaging adjustment function, which is shown in fig. 4 to 6, and specifically includes: the method comprises the following steps: the intelligent image processing gateway and the vehicle-mounted Ethernet camera are connected with the intelligent image processing gateway; the intelligent image processing gateway comprises: gateway body, install the PCBA circuit board on the body, the PCBA circuit board is equipped with: the system comprises an AVB/TSN Ethernet gateway, an ISP chip and a connector, wherein the ISP chip and the connector are respectively connected with the AVB/TSN Ethernet gateway;
the on-vehicle ethernet camera includes: the camera comprises a lens, an image sensor and an Ethernet PHY chip, wherein the image sensor is connected with the Ethernet PHY chip;
referring to FIG. 4, the Ethernet Bridge chip, for example, is used as the PHY chip of the Ethernet
The ISP chip is used for processing the image in the original bayer format acquired by the vehicle-mounted Ethernet camera or adjusting and correcting parameters of a lens and an image sensor in the vehicle-mounted Ethernet camera.
It should be noted that the intelligent image processing gateway provided in this embodiment is different from a conventional image processing gateway, and image processing of the intelligent image processing gateway of this embodiment is to perform image adjustment on an image in an original Raw Bayer format obtained by a camera imaging module by using an ISP, instead of performing image processing on three RGB images in the prior art. The raw Bayer formatted image includes only one channel per pixel, e.g., pixel a (x, y) has only one value for its pixel value. Such as the value of the R channel, or the G channel or the B channel. However, in the non-original image, the pixel points of the image include the values of three channels, i.e., R, G, and B values of a (x, y).
In the prior art, for example, patent CN201911375661.1 discloses an edge computing gateway based on visual recognition, but the processing of the gateway image is not directed to the original Raw bayer format image, but the processing is directed to the RGB format image to obtain the key parameters of the monitored device in the image. Unlike the present invention which employs an ISP image processor. In addition, in the prior art CN200910101042.3, the patent discloses a home intelligent gateway, but the image processing is only limited to the video encoding and decoding functions.
In this embodiment, the ISP chip includes an ISP logic circuit and a firmware, and the firmware performs feedback control on the ISP logic circuit unit by acquiring and processing image statistical information of the ISP logic circuit unit. Referring to fig. 6, the ISP chip includes an ISP logic circuit unit and Firmware (Firmware); the logic circuit unit can complete a part of algorithm processing and can also count the real-time information of the current image;
the Firmware acquires the image statistical information of the ISP logic circuit unit, recalculates the image statistical information, and controls the lens, the sensor and the ISP logic circuit unit in a feedback mode so as to achieve the purpose of automatically adjusting the image quality.
Specifically, the camera collects an external optical signal through Lens, converts the optical signal into an electrical signal through an image sensor to form raw bayer format data, packages the raw bayer format data into a data packet of an IEEE1722AVTP audio and video transmission protocol for transmission, unpacks the data packet in a network layer through an AVB/TSN protocol stack, and sends the unpacked data packet to an ISP chip;
after an ISP chip acquires an original image in a Bayer format, the ISP chip outputs an image in an RGB space domain and stores the image in a system cache or a local hard disk after algorithm processing, wherein the ISP chip controls ISP logic through firmware running on the ISP chip so as to correspondingly control a lens and a sensor, further complete functions of automatic aperture, automatic exposure, automatic white balance and the like, and finally output an image in the RGB format or YUV format;
this implementation provides vehicle-mounted ethernet intelligent gateway system and provides the data of video acquisition for external SoC Processor platform, has two kinds of modes, and one kind is directly to gather primitive video data from vehicle-mounted ethernet camera, and the other kind is that SoC Processor chip links to each other with intelligent image processing gateway and obtains data. However, the SoC Processor chip settings are not consistent in two different data acquisition modes.
Specifically, the intelligent gateway system directly provides video data in an original bayer format for an external SoC Processor chip, wherein the SoC chip is provided with an ISP chip, and the SoC Processor chip is directly connected with a vehicle-mounted ethernet camera to obtain original bayer format data of an image;
and the ISP chip performs image adjustment on the original bayer format data to output an RGB image.
The second way is: the intelligent gateway system provides a transmission interface of video data for an external SoC Processor chip, wherein the SoC Processor chip is connected with the intelligent image processing gateway to obtain the video data processed by an ISP chip in the intelligent image processing gateway.
Specifically, the connector further includes: ethernet PHY chip, CAN chip, RGMII chip, PCIE-4.0PHY chip;
the CAN chip is used for being connected with the ECU through the CAN bus to transmit data and transmit or receive control signals in the vehicle;
the RGMII chip is used for transmitting image data compressed by the H.264 chip and aims at equipment without a high-speed interface;
the PCIE-4.0PHY chip is used to transmit uncompressed data, which is specific to devices with high-speed interfaces, such as a domain controller and a central computer platform;
the PHY chip of the Ethernet at least comprises a 10G electrical interface PHY chip or a 10G optical interface PHY chip; the external video or image data is connected with the PHY chip of the Ethernet through a vehicle-mounted Ethernet bus;
the vehicle-mounted Ethernet transmission bus positioned between the vehicle-mounted Ethernet through camera and the intelligent image processing gateway comprises a shielding STP single-pair twisted-pair cable with the transmission rate of 1G or 10G;
or 10G vehicle ethernet transmission bus comprises optical fiber, using optical fiber as transmission medium.
The ethernet PHY chip includes a dedicated ASIC chip or is implemented based on an FPGA chip.
The transmission protocol of the Ethernet PHY chip is based on the IEEE1722AVTP audio and video transmission protocol.
Specifically, the AVB/TSN Ethernet gateway can be replaced by an AVB/TSN Ethernet protocol stack module;
the AVB/TSN Ethernet gateway can analyze the data packet in a network layer, can convert the data packet conforming to the AVB/TSN protocol into the data packet in other standard protocol formats, or convert the data packet in other protocols into the AVB/TSN protocol; or the data packet of the AVB/TSN protocol can be analyzed and packaged according to the format of the AVB/TSN protocol.
The AVB/TSN protocol includes at least: IEEE1722AVTP audio video transport protocol.
Or according to the use of the video data, such as ADAS auxiliary driving, automatic driving and other scenes, the method can add the following steps in the AVB/TSN protocol stack: IEEE 802.1AS, precision clock timing and synchronization protocol (gPTP); IEEE 802.1 Qat: stream Reservation Protocol (SRP); IEEE 802.1 Qav: time sensitive flow queuing and forwarding protocol (FQTSS); IEEE 802.1 BA: and the audio and video bridging system is used for defining a network configuration file.
The intelligent image processing gateway further comprises: and the H.264 decoding chip is used for compressing the video data to be transmitted and converting the compressed video data into a protocol conforming to H.264 for output.
In the embodiment, because the transmitted high-resolution image is a platform with low picture quality requirement in consideration of the requirements of different platforms, the embodiment can compress the data in the RGB image format after being analyzed by the ISP chip through the h.264 decoding chip, and then transmit the data to the platform with the non-high-speed interface through the RGMII chip;
the 10G Ethernet PHY chip comprises a special ASIC chip or is realized based on an FPGA chip;
because the manufacturing barrier of the chip is high, after the design of the special ASIC chip is adopted, the function is fixed, and a non-chip user can not modify the function;
if the existing ASIC chip can not meet the requirements, the embodiment can be realized based on the FPGA chip, and the functions of the chip can be flexibly adjusted by adopting the FPGA chip;
the transmission protocol of the 10G Ethernet PHY chip is based on an IEEE1722AVTP audio and video transmission protocol;
referring to fig. 5, after the video input signal is input to the external switch through the transmission medium for switching, the signal is output to the ethernet PHY chip and then input to the AVB/TSN ethernet gateway for analysis.
In this embodiment, the external switch is an ethernet switch, and in the image acquisition architecture shown in fig. 1, each channel is exclusive and cannot be shared, because a camera is added, hardware facilities of a corresponding interface need to be added. However, in the technical scheme provided by the utility model, the IEEE1722AVTP audio and video transmission protocol has the characteristics of an Ethernet protocol. The channel can share, when the number of camera increases, need not increase corresponding interface at intelligent gateway, only need increase an ethernet switch, with the image input of camera collection to the ethernet switch, then assemble the video data of a plurality of cameras at any ethernet PHY interface in intelligent image processing gateway through the ethernet switch and carry out ISP image processing can. The hardware of the intelligent image processing gateway does not need to be changed, and the flexibility is high.
The intelligent image processing gateway also comprises an MCU chip, and the MCU chip is connected with the AVB/TSN Ethernet gateway and is used for controlling the functional module in the PCBA.
What has been described above is only a preferred embodiment of the present invention, and the present invention is not limited to the above examples. It is clear to those skilled in the art that the form in this embodiment is not limited thereto, and the adjustable manner is not limited thereto. It is to be understood that other modifications and variations, which may be directly derived or suggested to one skilled in the art without departing from the basic concept of the utility model, are to be considered as included within the scope of the utility model.
Claims (12)
1. A vehicle-mounted Ethernet intelligent gateway system with an imaging adjusting function is characterized by comprising: the intelligent image processing gateway and the vehicle-mounted Ethernet camera are connected with the intelligent image processing gateway; the intelligent image processing gateway comprises: gateway body, install the PCBA circuit board on the body, the PCBA circuit board is equipped with: the system comprises an AVB/TSN Ethernet gateway, an ISP chip and a connector, wherein the ISP chip and the connector are respectively connected with the AVB/TSN Ethernet gateway;
the on-vehicle ethernet camera includes: the camera comprises a lens, an image sensor and an Ethernet PHY chip, wherein the image sensor is connected with the Ethernet PHY chip;
the ISP chip is used for processing the image in the original bayer format collected by the vehicle-mounted Ethernet camera.
2. The intelligent gateway system with imaging and adjusting functions for vehicular Ethernet according to claim 1, wherein the ISP chip comprises ISP logic circuit units and firmware.
3. The intelligent gateway system with imaging adjustment function of claim 1, wherein the intelligent gateway system provides the external SoC Processor chip with video data in original bayer format directly, wherein the SoC Processor chip is provided with an ISP chip, and the SoC Processor chip obtains the original bayer format data of the image by directly connecting with the vehicle ethernet camera;
and the ISP chip performs image adjustment on the original bayer format data to output an RGB image.
4. The intelligent gateway system with imaging adjustment function of vehicular ethernet as claimed in claim 1, wherein the intelligent gateway system provides a transmission interface for video data for an external SoC Processor chip, wherein the SoC Processor chip obtains the video data processed by the ISP chip in the intelligent image processing gateway by connecting with the intelligent image processing gateway.
5. The intelligent gateway system with imaging adjustment function of vehicular Ethernet of claim 1, wherein the vehicular Ethernet transmission bus connecting the vehicular Ethernet camera and the intelligent image processing gateway comprises a shielded STP single twisted pair with 1G or 10G transmission rate;
or 10G vehicle ethernet transmission bus comprises optical fiber, using optical fiber as transmission medium.
6. The vehicular ethernet intelligent gateway system with imaging adjustment function of claim 1, wherein the connector comprises at least an ethernet PHY chip; the external video or image data is connected with the Ethernet PHY chip through a vehicle-mounted Ethernet bus;
the Ethernet PHY chip at least comprises a 10G electrical interface PHY chip or a 10G optical interface PHY chip.
7. The in-vehicle ethernet intelligent gateway system with imaging adjustment function of claim 1, wherein said connector further comprises: CAN chip, RGMII chip, PCIE-4.0PHY chip.
8. The vehicular ethernet intelligent gateway system with imaging adjustment function of claim 6, wherein the ethernet PHY chip comprises a dedicated ASIC chip or an FPGA chip based implementation.
9. The vehicular ethernet intelligent gateway system with imaging adjustment function of claim 1 or 6, wherein the transmission protocol of the ethernet PHY chip is based on IEEE1722AVTP audio/video transmission protocol.
10. The intelligent gateway system of vehicular ethernet with image adjustment function of claim 1, wherein the video signal of vehicular ethernet camera is inputted to the AVB/TSN ethernet gateway in the intelligent image processing gateway for analysis after passing through the ethernet PHY chip;
or the video input signal is input to an external Ethernet switch through a transmission medium for switching, and then the signal is output to an Ethernet PHY chip and then input to an AVB/TSN Ethernet gateway in the intelligent image processing gateway for analysis.
11. The vehicular ethernet intelligent gateway system with imaging adjustment function of claim 1, further comprising: and the H.264 decoding chip is used for compressing the video data to be transmitted and converting the compressed video data into data conforming to the H.264 protocol for output.
12. The intelligent gateway system with imaging adjustment function for vehicle-mounted Ethernet of claim 2, wherein the ISP chip adjusts and corrects parameters of a lens and an image sensor in the vehicle-mounted Ethernet camera;
the firmware controls the ISP logic circuit unit in a feedback way by acquiring and processing the image statistical information of the ISP logic circuit unit.
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