Analysis of Intelligent Accessories Technology for Electric Vehicles: Perception and Interaction Innovation from ADAS to Connected Vehicles

Keywords: electric vehicle intelligent accessories ADAS、 Connected vehicles, sensors, human-computer interaction

abstract

Intelligent accessories are the core carrier of the "intelligence" of electric vehicles. This article analyzes the technical architecture and user experience optimization of sensor fusion, V2X communication, and AR-HUD.

3.1 Sensor Fusion and ADAS Systems

Lidar: The Sagitar Juchuang M1 LiDAR has a point cloud density of 3 million points per second, a detection range of 200 meters, and supports L3 level autonomous driving (such as the Xiaopeng P5).

4D millimeter wave radar: The mainland ARS540 radar has height measurement capability and can distinguish between overpasses and ground vehicles, with a cost only 1/5 of laser radar.

3.2 Vehicle to Everything (V2X) Communication Technology

C-V2X standard: China's leading 5G-V2X technology has a latency of less than 20ms and supports vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communication. It has been applied to Shanghai Yangshan Port's autonomous driving heavy-duty trucks.

High precision map: The new HD Map for 4D mapping has an accuracy of 10cm, combined with RTK positioning (error<2cm), achieving lane level navigation.

3.3 Human Computer Interaction and AR-HUD

Holographic projection technology: The Mercedes Benz MBUX Hyperscreen adopts an OLED curved screen with a resolution of 3840 × 720, supporting gesture control and eye tracking.

AR-HUD augmented reality navigation: Huawei AR-HUD projects navigation information onto the front windshield, with a field of view (FOV) of 13 °× 5 ° and a distance of 7.5 meters, reducing the number of times the driver lowers their head.

3.4 Intelligent cockpit and ecological interconnection

Multi screen linkage system: The Ideal L9 adopts 5-screen interaction (center console+passenger seat+rear entertainment screen+HUD+steering wheel screen), and achieves zero delay switching through Snapdragon 8155 chip.

Cross device connectivity: Apple CarPlay supports wireless connection and can call the phone's Siri voice assistant to control smart homes (such as turning on air conditioning in advance).

3.5 Standardization and Safety Certification

ISO 21434 standard: For in vehicle network security, it requires penetration testing and vulnerability scanning of ECUs (such as Tesla's previous remote control of vehicles due to API vulnerabilities).

ASIL-D functional safety: the auto drive system shall meet the highest safety level of ISO 26262, with MTBF>10 ⁹ hours.

conclusion

Intelligent accessories need to shift from "functional stacking" to "user experience". Through the fusion of sensors, the collaboration between the Internet of Vehicles and AR-HUD, a safe and convenient intelligent travel ecosystem can be built.