Vehicle-to-Device Indoor Navigation via Sensor Map Transfer
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Solution Overview
Problem
Existing navigation systems fail to effectively guide users between positions within or outside buildings, especially in areas with no network coverage or available map data, such as underground garages, where satellite navigation is unreliable or unavailable.
Innovation Solution
A method where a motor vehicle creates map information using environmental sensors, provides parking information, and transfers this data to a user's mobile device, enabling the creation and use of navigation information to guide the user between positions, even in areas without network coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite-based navigation systems are used for positioning, then navigation accuracy in open areas is improved, but navigation reliability in underground areas without satellite signal is deteriorated
Solution Approach 1:
The navigation system is segmented into multiple independent positioning methods: satellite-based positioning for open areas and inertial sensor-based positioning for underground areas. Each segment operates autonomously in its suitable environment, with the system switching between segments based on signal availability, thus maintaining both accuracy where possible and reliability where needed.
Solution Approach 2:
Inertial sensors serve as an intermediary positioning method that bridges the gap between satellite-based positioning in open areas and the complete lack of positioning capability in underground areas. The inertial measurement unit (IMU) provides continuous positioning information by measuring acceleration and integrating it over time, enabling navigation reliability in areas where satellite signals are unavailable.
2Ease of operation
If mobile communication devices are used for navigation, then ease of operation is improved, but navigation functionality in areas without network coverage is deteriorated
Solution Approach 1:
The mobile communication device is enhanced with multi-functionality by integrating inertial sensors and processing units that enable autonomous positioning without network coverage. The device can now function both as a conventional network-based navigation tool and as an independent inertial navigation system, making it universally applicable in both covered and uncovered areas.
Solution Approach 2:
The system performs preliminary action by continuously collecting and processing inertial measurement data even when network coverage is available, building up positioning information in advance. This allows the device to seamlessly transition to autonomous inertial navigation when network coverage is lost, maintaining navigation functionality without interruption.
3Measurement precision
If conventional navigation systems relying on external network data are used, then navigation accuracy in areas with map data is improved, but navigation capability in areas without map data is deteriorated
Solution Approach 1:
The navigation system dynamically adapts its operation mode based on environmental conditions. When map data and network coverage are available, the system uses GPS-based navigation with map matching for high accuracy. When entering underground areas without map data, the system dynamically switches to inertial sensor-based dead reckoning navigation, maintaining adaptability across diverse environments.
Solution Approach 2:
The system changes its operational parameters by switching between different positioning methods and updating its internal state based on signal availability. When satellite signals are available, it uses absolute positioning with high accuracy parameters. When signals are lost, it transitions to relative positioning using inertial measurements, adjusting accuracy expectations and navigation algorithms accordingly to maintain versatility.
Data Source
AI summary
A method for navigating a user between a first position within a building and a second position, or vice versa, includes creating, by a motor vehicle, map information describing at least one partial area of the building based on vehicle environment information created at the motor vehicle that describes objects in the environment around the motor vehicle. The method further includes providing, by the motor vehicle, parking information including a park position of the motor vehicle within the building and transferring the map information and the parking information to a mobile communication device. The mobile communication device is configured to create navigation information containing at least one navigation route between the first position and the second position, based on the transferred map information and the transferred parking information. The mobile communication device is configured to navigate the user between the first position and the second position using the navigation information.