The 15th Berlin International Rail Transit Technology Exhibition will be held in Berlin from September 22nd to 25th. During this period, the VELLINK digital subway train based on green intelligence integration, developed by CRRC Changke Co., Ltd. based on the Chinese standard subway technology platform, was officially unveiled, marking a new technological breakthrough in China's urban rail transit equipment.

In terms of embodied intelligence, the train relies on a global sensing network, self-developed AI algorithms, and high-speed communication to upgrade from passive execution to active optimization operation: by using a multi-modal perception large model to perceive the line environment in real time and predict road conditions and equipment changes in advance; Using the on-board edge computing platform as a carrier, combined with the independently developed "Wulun" large model intelligence to formulate driving strategies, making transportation capacity allocation more scientific and efficient.

In terms of fusion and reconstruction, the train has been positively optimized in three dimensions: system architecture, power supply chain, and load-bearing structure. The three major systems of intelligent operation, passenger service, and real-time monitoring have been integrated, resulting in a 50% reduction in control host and a 30% optimization of vehicle wiring. The power efficiency has been improved by about 9%.

In terms of green and low-carbon, the large-scale application of lightweight materials such as carbon fiber and magnesium aluminum alloy in trains has reduced the weight of the entire vehicle by about 18%; Equipped with energy-saving equipment such as permanent magnet traction system and silicon carbide high-efficiency inverter, the comprehensive energy-saving rate exceeds 10%, and the carbon emissions throughout the entire life cycle are reduced by about 15%.

In terms of human centered design, the train optimizes the driving experience from multiple dimensions such as space, vision, and hearing. The transparent area of the passenger compartment windows is increased by 40%, the passenger capacity is increased by about 14%, and the overall running noise is reduced by 3 decibels, creating a quiet and comfortable travel environment.

Based on the integration of green and intelligent technology, the digital subway train is jointly developed by CRRC Changke and Chengdu Rail Transit Group, breaking through multiple key core technologies in the industry, integrating multiple advantages such as embodied intelligence, fusion reconstruction, digital twin, green and low-carbon, and ultimate experience. It further showcases the cutting-edge technology of urban rail transit equipment in China and sets a new example for the global integration of green and intelligent development of rail transit.Editor/Yang Meiling