CN220915368U - Image acquisition system and vehicle - Google Patents

Abstract

An image acquisition system and vehicle relates to vehicle technical field, the system includes: m cameras, M is an integer greater than 1; the transmission module comprises M transmission channels, the M transmission channels are divided into n groups, the n groups of transmission channels are in one-to-one correspondence with the n cameras, each group of transmission channels comprises a clock channel and at least one data channel and is configured to transmit image data acquired by the corresponding camera to the main control chip, M is an integer greater than 3, and n is an integer greater than 1 and less than or equal to M; the master control chip comprises m channel acquisition interfaces, the m channels are connected with m transmission channels in a one-to-one correspondence manner, the master control chip comprises a clock channel and m-1 data channels, and the clock channel is correspondingly connected with one clock channel. Thus, more cameras can be externally connected.

Description

Image acquisition system and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to an image acquisition system and a vehicle.

Background

In a conventional hardware design (see fig. 1-2), each CSI (CAMERA SERIAL INTERFACE ) is connected to only one camera. Referring to fig. 3, each path of camera corresponds to one path of CSI interface, that is, each path of CSI interface of the platform is conventionally connected to a camera input pin, and a default function of the platform is used.

However, with the increase of the requirements of multiple cameras, the number of the CSI interfaces of the platform is insufficient to meet the requirements of the vehicle-to-machine system, and the CSI interfaces are not enough to be used. For example, current car systems present more than 5 demands such as DVR (Digital Video Recorder, vehicle recorder), DMS (Driver Monitor System, driver monitoring camera), OMS (Occupant Monitoring System, passenger monitoring system), IMS (In-cabin monitoring System, cabin monitoring system), faceId (face unlocking), panorama, etc., and the original platform interfaces have not been able to meet the demands.

Disclosure of utility model

An image acquisition system and a vehicle comprise an m-channel acquisition interface and a transmission module, wherein the m-channel acquisition interface and the transmission module comprise m transmission channels, the m-channel is connected with the m transmission channels in one-to-one correspondence, and the n-group transmission channels are in one-to-one correspondence with the n cameras and can be externally connected with more cameras.

In a first aspect, the present disclosure proposes an image acquisition system comprising: m cameras, M is an integer greater than 1; the transmission module comprises M transmission channels, the M transmission channels are divided into n groups, the n groups of transmission channels are in one-to-one correspondence with the n cameras, each group of transmission channels comprises a clock channel and at least one data channel and is configured to transmit image data acquired by the corresponding camera to the main control chip, M is an integer greater than 3, and n is an integer greater than 1 and less than or equal to M; the master control chip comprises m channel acquisition interfaces, wherein m channels are connected with m transmission channels in a one-to-one correspondence manner, each master control chip comprises a clock channel and m-1 data channels, and the clock channels are correspondingly connected with one clock channel.

According to the image acquisition system disclosed by the embodiment of the disclosure, the main control chip comprises an m-channel acquisition interface, the transmission module comprises m transmission channels, the m channels are connected with the m transmission channels in one-to-one correspondence, and the n groups of transmission channels are in one-to-one correspondence with the n cameras, so that more cameras can be externally connected.

In a second aspect, the present disclosure proposes a vehicle comprising: the image acquisition system is used for acquiring images.

According to the vehicle disclosed by the embodiment of the disclosure, more cameras can be externally connected through the image acquisition system.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

FIG. 1 is a conventional scheme hardware design;

FIG. 2 is a simplified schematic diagram of a conventional solution design;

FIG. 3 is a schematic view of a conventional scheme camera;

FIG. 4 is a schematic diagram of the architecture of an image acquisition system of one embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a set of transmission paths according to one embodiment of the present disclosure;

FIG. 6 is a schematic structural view of an image acquisition system according to a first embodiment of the present disclosure;

FIG. 7 is a schematic diagram of an image acquisition system according to a second embodiment of the present disclosure;

FIG. 8 is a schematic structural view of an image acquisition system according to a third embodiment of the present disclosure;

fig. 9 is a schematic structural view of an image capturing system according to a fourth embodiment of the present disclosure.

Detailed Description

In recent years, with the continuous development of automobile intellectualization, the traditional automobile functions cannot meet the demands of people. The intelligent automobile accessory can bring the modern experience of everything interconnection to people. The vehicle is provided with a set of large-screen intelligent central control vehicle-mounted platform which is more popular with vehicle owners. With the popularization of Android systems of mobile phones, a car and machine platform with an intelligent Android system is rapidly occupying the market on modern automobiles.

Vehicle systems often have more camera access requirements than cell phone systems. The cabin interior and exterior of the existing car machine system comprise the requirements of various cameras such as panorama, car recorders, driver monitoring, passenger monitoring, face recognition and the like. The multi-path cameras are mounted in the Android system, and the total quantity often depends on the quantity of interfaces (CSI) provided by a platform and the bandwidth limit which can be processed internally. For example, a certain high-pass middle-end chip can be connected with three cameras, and in practice, 5-6 products need to be externally connected.

It should be noted that, the CSI-2 interface specification is related to a camera serial interface published in 2005 by MIPI alliance organization, and is used as an entirely new interface framework between camera equipment and a processor, which provides a flexible and high-speed equipment interface for related industries such as portable, mobile phone cameras, and the like. The CSI effect is to transfer camera data to our host computer, which is a serial data interface.

Referring to fig. 1, in the conventional camera scheme, one CSI has one clock differential signal, and 4 data differential lines, and camera data is transmitted to our host through CSI. Referring to fig. 2, one CSI consists of one clock and 4 data. Referring to fig. 3, taking a high-pass 6125 platform as an example, the chip has 3 paths of CSI, and the current scheme can only connect with 3 paths of cameras at most.

Through capability analysis of the platform, in actual use, the bandwidth of the input camera is far smaller than the capability of the platform. After the camera protocol is analyzed, the CSI channel of the hardware is found, and the interface of the CSI channel can be split to receive two paths of data. Therefore, according to the scheme disclosed by the invention, the principle of a platform MIPI (Mobile Industry Processor Interface ) protocol is utilized, and a method for splitting the CSI channel is adopted, so that the resource utilization is maximized, the number of external cameras is expanded, and the theory can be doubled. Especially for the requirement of smaller resolution of the required camera, the original strategy of splitting one path into two paths is adopted, and the adaptation is performed on the software and hardware layers, so that the capability of expanding the input quantity is achieved.

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

An image acquisition system and a vehicle according to an embodiment of the present disclosure are described below with reference to fig. 4 to 9.

Fig. 4 is a schematic structural view of an image acquisition system according to an embodiment of the present disclosure. As shown in fig. 4, the image acquisition system 100 includes: m cameras 10, transmission module 20 and main control chip 30.

Wherein M cameras 10, M is an integer greater than 1;

The transmission module 20 comprises M transmission paths 21, wherein the M transmission paths 21 are divided into n groups, the n groups of transmission paths 21 are in one-to-one correspondence with the n cameras 10, each group of transmission paths 21 comprises a clock path and at least one data path and is configured to transmit image data acquired by the corresponding camera 10 to the main control chip 30, M is an integer greater than 3, and n is an integer greater than 1 and less than or equal to M;

The master control chip 30 comprises m channel acquisition interfaces 31, m channels are connected with m transmission channels 21 in a one-to-one correspondence manner, each master control chip comprises a clock channel 311 and m-1 data channels 312, and the clock channels 311 are correspondingly connected with one clock channel.

In particular, the n cameras 10 may include at least two of a vehicle recorder, a driver monitoring camera, a passenger monitoring camera, a panoramic camera, a cabin surveillance anti-occlusion infrared camera, a face unlocking camera. Each camera 10 transmits the acquired image data to the main control chip 30 through a set of transmission paths 21 (i.e., one clock path and at least one data path). Alternatively, the acquisition interface may be a camera serial interface CSI based on a mobile industry processor interface MIPI.

From this, this image acquisition system includes m passageway collection interface, transmission module including m transmission path through main control chip, and m passageway and m transmission path one-to-one connection, and n group transmission path and n camera one-to-one can external more cameras.

Referring to fig. 5, the transmission module 20 includes a deserializer 22 and n serializers 23, the n serializers 23 are in one-to-one correspondence with the n cameras 10, and each serializer 23 is connected with the corresponding camera 10 and connected with the deserializer 22 to form a group of transmission paths 21.

It should be noted that the deserializer 22 may be connected to the serializer 23 through an FPD-Link interface or a GMSL interface.

As an example, the number of M channel acquisition interfaces 31 is N, the number of transmission modules 20 is N, the M cameras 10 are divided into N groups, the N transmission modules 20 are in one-to-one correspondence with the N M channel acquisition interfaces 31 and the N groups of cameras 10, and N is an integer greater than 1.

It should be noted that the main control chip 30 may further include N-1 grounding terminals GND, each of which is disposed between two adjacent m-channel acquisition interfaces 31.

For example: referring to fig. 7, n is 3, m is 6, that is, the main control chip 30 includes 3 m channel acquisition interfaces 31 (i.e., mipi_cst0, mipi_cst1, mipi_cst2), 6 cameras 10 (i.e., FACEID cameras, IMS cameras, DMS cameras, DVR cameras, OMS cameras, PANO (panoramic camera, panoramic camera)) are divided into 3 groups, wherein the FACEID, the IMS are one group, the DMS, the DVR are one group, the OMS, the PANO are one group, the FACEID, DMS, OMS corresponding transmission channels 21 include one clock channel, one data channel, the IMS, DVR, PANO corresponding transmission channels 21 include one clock channel, two data channels, and in addition, the main control chip 30 may further include 2 ground terminals GND, each of which is disposed between two adjacent m channel acquisition interfaces 31.

As an example, referring to fig. 6, m has a value of 5,5 channels respectively denoted as a clock channel 311, a first data channel 3121, a second data channel 3122, a third data channel 3123, and a fourth data channel 3124, n has a value of 2, and 2 sets of transmission channels 21 are respectively denoted as a first set of transmission channels 210 and a second set of transmission channels 220.

The clock paths in the first set of transmission paths 210 are connected to the clock channel 311, the data paths in the first set of transmission paths 210 are connected to the second data channel 3122, the clock paths in the second set of transmission paths 220 are connected to the first data channel 3121, and two data paths in the second set of transmission paths 220 are connected to the third data channel 3123 and the fourth data channel 3124, respectively.

Specifically, one channel of CSI is split into 2 cameras 10 for use, the clock channel 311 in the 5-channel acquisition interface 31 in the main control chip 30 is used as the clock pin of the first camera 10, the second data channel 3122 is changed to the data pin of the first camera 10, the first data channel 3121, that is, the Lane0 data pins a31_mipi_csi1_lane0_n and a31_mipi_csi1_lane0_p are configured as the clock pins of the second camera 10, and the third data channel 3123 and the fourth data channel 3124 are configured as the data pins of the second camera 10. It should be noted that, after the splitting scheme is adopted, for the camera 10 with smaller resolution and lower frame rate, the split CSI is enough to meet the bandwidth requirement, and two split channels can be connected, so that the requirement of connecting more cameras 10 can be met to a greater extent by using the existing resources. In addition, the hardware wiring needs to be corresponding, and cannot be connected in disorder, and particularly attention needs to be paid to that the clock channel 311 and the first data channel 3121 cannot be connected in error.

For example: referring to fig. 8, the 3 m-channel acquisition interfaces 31 are CSI0, CSI1, CSI2, and 6 cameras 10 (i.e., FACEID, IMS, DMS, DVR, OMS, PANO (panoramic camera, panoramic camera)) are divided into 3 groups, wherein the FACEID, the IMS are one group, the DMS, the DVR are one group, and the OMS and the PANO are one group. DMS, DVR corresponds to CSI0, FACEID, IMS corresponds to CSI1, OMS, PANO corresponds to CSI2.

Therefore, through splitting channels of one channel of the CSI, the one channel of the CSI can be split for 2 cameras, the input channel quantity is expanded, and completely independent 2 channels of the CSI are obtained, namely, the split 2 channels of the CSI are provided with independent clock lines and independent data lines, CCI control is independent, and the requirement of externally connecting more cameras is met. It should be noted that the external camera may be any manufacturer and model, and is not particularly limited.

That is, under the condition of using the same platform, the number of the externally-connected cameras can be far greater than that of the original scheme. For example: the original platform capable of being externally connected with 3 cameras can be connected with 5-6 cameras; the original platform that can external 5, this disclosure can external 8-10 cameras.

As an example, the image acquisition system 100 may further include a display device 40, and the main control chip 30 is further connected to the display device 40.

Specifically, the display device 40 receives the image data transmitted by the main control chip 30, parses the image data to restore the image data to a required data format (such as a data format corresponding to preview, photographing, video recording, storage, etc.), and displays the image.

The present disclosure also provides a vehicle including: the image acquisition system 100 described above.

According to the vehicle disclosed by the invention, more cameras can be externally connected through the image acquisition system.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.

Claims (10)

1. An image acquisition system, comprising:

m cameras, M is an integer greater than 1;

The transmission module comprises M transmission channels, the M transmission channels are divided into n groups, the n groups of transmission channels are in one-to-one correspondence with the n cameras, each group of transmission channels comprises a clock channel and at least one data channel and is configured to transmit image data acquired by the corresponding camera to the main control chip, M is an integer greater than 3, and n is an integer greater than 1 and less than or equal to M;

The master control chip comprises m channel acquisition interfaces, wherein m channels are connected with m transmission channels in a one-to-one correspondence manner, each master control chip comprises a clock channel and m-1 data channels, and the clock channels are correspondingly connected with one clock channel.

2. The image acquisition system of claim 1 wherein the transmission module comprises a deserializer and n serializers, the n serializers being in one-to-one correspondence with the n cameras, each of the serializers being connected to a corresponding camera and to the deserializer, forming a set of transmission paths.

3. The image acquisition system according to claim 1, wherein the number of M channel acquisition interfaces is N, the number of the transmission modules is N, the M cameras are divided into N groups, the N transmission modules are in one-to-one correspondence with the N M channel acquisition interfaces and the N groups of cameras, and N is an integer greater than 1.

4. The image acquisition system of claim 1 wherein m is 5,5 channels are respectively designated as a clock channel, a first data channel, a second data channel, a third data channel, and a fourth data channel, and n is 2,2 sets of transmission channels are respectively designated as a first set of transmission channels and a second set of transmission channels; wherein,

The clock paths in the first group of transmission paths are connected with the clock channels, the data paths in the first group of transmission paths are connected with the second data channels, the clock paths in the second group of transmission paths are connected with the first data channels, and two data paths in the second group of transmission paths are respectively connected with the third data channels and the fourth data channels.

5. The image acquisition system of claim 1, wherein the acquisition interface is a mobile industry processor interface MIPI based camera serial interface CSI.

6. The image acquisition system of claim 1, wherein the n cameras comprise at least two of a vehicle recorder, a driver monitoring camera, a passenger monitoring camera, a panoramic camera, a cabin surveillance anti-occlusion infrared camera, a face unlocking camera.

7. The image acquisition system of claim 3, wherein the master control chip further comprises N-1 ground terminals, each of the ground terminals being disposed between two adjacent m-channel acquisition interfaces.

8. The image acquisition system of claim 2, wherein the deserializer is connected to the serializer via an FPD-Link interface or GMSL interface.

9. The image acquisition system of claim 1, further comprising a display device, wherein the master control chip is further coupled to the display device.

10. A vehicle, characterized by comprising: the image acquisition system according to any one of claims 1-9.