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【AUMO】A Solution for Diverting and Collecting Multiple GMSL2 Cameras for Autonomous Driving

A Solution for Diverting and Collecting Multiple Cameras for Autonomous Driving



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Key Parameter

Serializer

MAX9295A

DESerializer

MAX9296A

I2C/GPIO

Supports I2C and GPIO transparent transmission

Number of channels

8-channel camera bypass and acquisition

Video

YUV422、RGB888、RAW12

PCIE

PCIE 3.0 X 8

Output Resolution

four thousand and ninety-six × 2160@30fps Supports up to 8 channels

network

10/100/1000M adaptive, supporting gPTP timing timestamp, with an accuracy of less than 1ms

POC power supply

Single channel Max 1A@12V

Length

Up to 40 meters (3Gbps) in GMSL1 mode
Up to 20 meters (6Gbps) in GMSL2 mode

Upgrade

Support PC firmware upgrade

Architecture

Support for V4L2 software architecture

FAKRA

4 in 1 Amphenal Z code min-Fakra

operation temperature

-40℃ ~ 70℃

storage temperature

-40℃ ~ 85℃

Working humidity

10%~90%

Storage humidity

0~90%

Power supply

PCIE power supply/12V power supply

Weight

450g

Size

111.15 * 190(mm)

MTBF

5 year


Software Parameters

host system

Tested Linux kernel version: UBuntu16-linux4.15.0-142、UBuntu18-linux5.4.0-144、UBuntu20-linux5.15.0-67

Functional support

Support Linux operating system and use V4L2 framework driver;
Support AXI interface extension of peripherals and support the use of MSI interrupts by peripherals;
Support standard IIC and UART devices;
Memory mode supports USERPTR and MMAP;
Support camera configuration and query operations through IIC bus;

Common operations

VIDIOC_DQBUF, VIDIOC_QBUF
VIDIOC_STREAMOFF, VIDIOC_STREAMON
VIDIOC_REQBUFS, VIDIOC_QUERYBUF
VIDIOC_QUERYCAP, VIDIOC_QUERYCTRL
VIDIOC_G_PARM,VIDIOC_S_PARM
VIDIOC_G_FMT, VIDIOC_S_FMT
VIDIOC_G_CTRL,VIDIOC_S_CTRL


Interface Description

At the baffle, a total of 1 channel of Gigabit Ethernet is led out for gPTP synchronization and board management, 4 4-in-1 Fakra interfaces lead out 8 channels of GMSL input and 8 channels of GMSL bypass output, and 1 aviation socket M8 leads out 4 channels of CAN-FD interface.

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Definition of aviation socket interface

Using M8 8pin aviation socket (male) for 4-way CAN-FD communication

PIN pin

signal name
direction
illustrate

1

CAN1_H

two-way

CAN_H Signal line

2

CAN1_L

two-way

CAN_L Signal line

3

CAN2_H

two-way

CAN_H Signal line

4

CAN2_L

two-way

CAN_L Signal line

5

CAN3_H

two-way

CAN_H Signal line

6

CAN3_L

two-way

CAN_L Signal line

7

CAN4_H

two-way

CAN_H Signal line

8

CAN4_L

two-way

CAN_L Signal line

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Dimensional Structure

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Power Consumption test

project

consumption(W)

notes

Static power consumption

18.78

Not connected to camera module

Dynamic Power

35.42

Connect 8 camera modules


Classic Case

Scheme of Automatic Driving Vehicle Diversion Collection and Calculation Platform

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Application Area

Data collection vehicle

After the camera video is collected, it is stored on the disk to provide data support for subsequent algorithm simulation and restoration

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Autonomous driving road test

The onboard splitter card splits the camera output to the ECU and stores the video data on the disk

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