To ensure the accuracy of real-time traffic information, the car navigation arm core board has built a complete solution through multi-source data fusion, intelligent update mechanisms, high-precision positioning technology, functional safety design, and powerful computing performance and software ecosystem collaboration.
Multi-source data fusion is the foundation for improving information accuracy. The car navigation arm core board supports access to multiple data sources, including transportation departments, meteorological departments, user vehicle trajectories, and third-party operational data. For example, it obtains real-time traffic conditions through traffic monitoring cameras and ETC gantries, combines this with user vehicle-reported traffic speeds and congestion status, and overlays meteorological data on the impact of weather such as rain, snow, and fog, forming a comprehensive data network covering urban main and secondary roads, highways, and county and township roads. This "official authoritative data + crowdsourced data + third-party supplementation" model effectively solves the problems of limited coverage and high update latency of single data sources.
The intelligent update mechanism is key to ensuring the timeliness of information. The ARM core board employs a dual-mode "event-driven + timed update" system: In the event of congestion, accidents, or other emergencies, the system updates data within 20 seconds via 5G or WiFi dual channels; under normal circumstances, it automatically synchronizes the latest road conditions every 30 seconds on highways, every minute on urban roads, and every 5 minutes on county and township roads. Furthermore, the system has predictive update capabilities, analyzing road condition changes over the next 15-30 minutes using time-series algorithms to adjust navigation recommendations in advance and prevent users from getting stuck in congestion.
High-precision positioning technology provides a spatial reference for information matching. The ARM core board integrates an enhanced GPS receiver and an inertial navigation sensor. Through data fusion of satellite signals and onboard sensors, it maintains meter-level positioning accuracy even in areas with weak signals, such as tunnels and underground parking lots. Combined with map matching algorithms, it precisely aligns the vehicle's real-time location with the road network in the digital map, further eliminating errors caused by GPS signal drift and ensuring a high degree of consistency between traffic information and actual road conditions.
Functional safety design is a crucial guarantee for system reliability. The ARM core board adheres to the ISO 26262 standard and employs a core-sharing, lockstep, and hybrid architecture: for safety-critical tasks, such as real-time traffic information processing, lockstep mode is used to achieve redundant operation of the processor cores, ensuring fault-tolerant execution; for non-safety-critical tasks, such as navigation interface display, core-sharing mode is used to improve performance. This design satisfies high safety requirements while optimizing system power consumption and computing power allocation.
Powerful computing performance and software ecosystem collaboration provide support for real-time data processing. Based on the Armv9 architecture, the ARM core board is equipped with a high-performance CPU and GPU, supporting the processing of tens of thousands of traffic data points per second and generating standardized data packets. Simultaneously, ARM collaborates with map service providers, telecommunications operators, and other partners to build an ecosystem, ensuring efficient operation of the entire traffic information chain from collection to distribution through collaborative updates between the cloud-based real-time data processing center and in-vehicle terminals. For example, the in-vehicle terminal uses differential data transmission technology, synchronizing only changed data, significantly reducing transmission volume and enabling rapid recovery and updates even in weak network environments.
The car navigation arm core board eliminates information blind spots through multi-source data fusion, ensures timeliness through an intelligent update mechanism, achieves accurate matching through high-precision positioning technology, and ensures reliability through functional safety design. Ultimately, with its powerful computing performance and software ecosystem, it builds a real-time, accurate, and reliable traffic information processing system, providing drivers with a safer and more efficient travel experience.
