On August 24th, the "ICVS China Intelligent Networking Conference" hosted by Zosi Automotive Research was officially opened, inviting Tier1, software vendors, operating system vendors, intelligent driving and intelligent cockpit related enterprises to discuss the current situation of the industry, exchange innovative technology applications, and look forward to the future development trend of the industry.
Liu Yulong, director of SEG video product line, was invited to participate in the conference and delivered a keynote speech, he said that SEG navigation has 24 years of experience in the development and manufacturing of automotive intelligent network products, and supplies on-board parts for many domestic OEMs, covering on-board telematics terminals (5G/V2X, high-precision positioning modules, T-BOX), body intelligent control systems (domain controllers, intelligent gateways, BCM), on-board visual control modules (360 surround view systems, CMS electronic rearview systems, The speech focused on "The Application of CMS in the Field of Autonomous Driving" to share and exchange with industry colleagues, focusing on the advantages of CMS technology and system solutions, as well as the integration and scalability of CMS in the development stage of automatic driving.
On December 29, 2022, China's new national standard for automotive rearview mirrors, GB15084-2022 "Performance and Installation Requirements for Indirect Vision Devices for Motor Vehicles", was officially released, which means that vehicles equipped with CMS can be officially and legally mass-produced on the road from July 1, 2023. The new national standard GB 15084 clearly divides the indirect vision devices of motor vehicles, which can be roughly divided into seven types of vision, the internal vision devices belong to one category, and the second to seven categories belong to the external vision devices.
Electronic rearview mirror is a camera + car display screen instead of the traditional reflector, electronic rearview mirror is mainly divided into electronic rearview mirror and electronic exterior mirror, of which electronic rearview mirror is often called streaming media rearview mirror, electronic exterior mirror is generally directly referred to by electronic rearview mirror (CMS).
Compared with the traditional physical mirror, which has the problems of "incomplete vision, unclear vision, interference, and large wind resistance", CMS has the advantages of wider field of view, reducing blind spots, greatly reducing external light interference through image tuning algorithm (ISP), and strong ability to resist the influence of rain, snow and fog and bad weather, and the cross-sectional area of CMS camera rearview mirror can be reduced to half or even lower than that of traditional glass exterior mirrors, which can effectively reduce wind resistance and wind noise, and achieve energy saving and emission reduction.
The CMS system of commercial vehicles and passenger cars is composed of three parts: camera, display screen and controller, but the commercial vehicle solution is more complex than that of passenger cars.
The CMS system of passenger cars is generally composed of 2 displays + 2 left and right ear cameras + integrated 1 streaming media rearview mirror (optional) + controller, which can be integrated independently. Due to the high requirements of the CMS system for the real-time transmission performance of images, any image with a long delay may cause judgment errors, so the video images of the CMS system can only be transmitted digitally to minimize the delay. At present, the new national standard requires the delay time of the electronic rearview mirror to be less than 200 milliseconds, in fact, the delay of more than 30 milliseconds can be perceived, so there are two main solutions for SEG navigation: one is to use FPGA, the delay is about 20 milliseconds, almost imperceptible; The second is ARM, with a delay of about 50 milliseconds. Both of these options are far better than the delay requirements of the new national standard.
The commercial vehicle CMS system scheme is more complex, because the commercial vehicle screen and the area to be presented will be more (front blind area + lower blind area + left blind area + right blind area), so the commercial vehicle CMS scheme will have more channels on the outside camera, consisting of 2 on the left + 2 on the right + 1 on the front + 1 (optional) + 1 (optional) camera on the rear, the commercial vehicle display is larger than that of the passenger car, and the left and right 2 main displays are generally 12.3-inch screens, Two different areas of the same screen can be split to display the same type 2 mirror and type 4 mirror on the same side, while category 5 and type 6 mirrors can be displayed in one display at the same time. On the basic rearview scheme, SEG Plus adds a 360 panoramic function.
As an intelligent driving assistance, the CMS system anchors the pain points of urban driving scenes, brings dynamic vision adjustment in lane changes, reversing, turning, and parking, and integrates ADAS, DMS, OMS and other systems to realize face recognition, in-vehicle monitoring, fatigue warning, driver monitoring, behavior monitoring, and eye tracking functions, and actively marks alarm prompts on the display screen, which are recognized by one or two cameras, and the resolution and recognition distance are relatively low, which is in line with the application range of the low-speed control system.
We may be in the stage of non-autonomous driving or semi-autonomous driving for a long time in the future, before the realization of full autonomous driving, L3 or below level driving needs cameras to monitor the driver's behavior state, CMS instead of rearview mirror camera can integrate ADAS-type assisted driving functions and intelligent network related functions, and display visual information in real time on the appropriate display in the car, expanding into the "eyes" of autonomous driving.
Our vision for the future of autonomous driving is to use the integrated CMS reminder and prompt function in low-speed scenarios such as traffic intersections, above-ground and underground parking lots, auxiliary roads, roundabouts, and industrial park roads, and use the autonomous driving system to control the driving status of vehicles in high-speed scenarios such as highways, urban arterial roads, expressways, national highways, and provincial roads, and use these two systems to cover the autonomous driving of all scenarios.
