Parking lot automatic parking space management device for smart community
Electric vehicle power supply system capable of realizing redundancy and control method thereof
Digital voice locomotive communication system based on main bus and standby bus
Power adjusting method and device for electric vehicle
Unmanned aerial vehicle with battery heat preservation function
Power transmission and transformation line installation moving device
Vehicle-road cooperation system based on video structuring technology
Traffic jam tracing method and system based on low-altitude unmanned aerial vehicle