Motor Vehicle Navigation Device Dynamic Geographic Data Update
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Solution Overview
Problem
Existing navigation systems face challenges in providing real-time and precise position determination and route planning due to outdated basic geographic data, inability to include time-limited objects like construction sites, and lack of accurate traffic jam information with delay predictions.
Innovation Solution
A method that uses sensor data from devices like image recording devices, radar sensors, and PMD cameras to automatically update and supplement basic geographic data with dynamic and static object information, including time and date variables, to enhance position determination and route planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If basic geographic data are stored on a CD or DVD and updated by replacing the data carrier, then the data can be maintained with minimal device complexity, but the data become outdated and cannot include time-limited objects like construction sites
Solution Approach 1:
The patent transforms the static geographic data storage system into a dynamic one by enabling continuous updates through sensor data acquisition. The navigation device automatically captures current geographic information using onboard sensors (cameras, GPS, microphones) and supplements the basic geographic data with real-time observations of dynamic objects like construction sites, traffic conditions, and hazards. This dynamic approach ensures data remains current without requiring frequent manual CD/DVD replacements.
Solution Approach 2:
The navigation device performs self-updating by automatically acquiring geographic information through its own sensors during normal operation. The system supplements basic geographic data with self-collected data about dynamic objects, eliminating the need for external manual updates. The device serves itself by using its navigation and sensing capabilities to continuously refresh its geographic database.
2Loss of time
If traffic jam information is wirelessly transmitted to the navigation device, then route planning can be adjusted, but the information is subject to time loss and may be outdated by the time it reaches the device
Solution Approach 1:
The system performs preliminary data collection by continuously monitoring the environment with sensors during normal navigation operations. Geographic information about dynamic objects is captured in advance and stored as additional geographic data, so when route planning is needed, the information is already available without requiring real-time wireless transmission. This eliminates the time delay inherent in receiving traffic information after it has occurred.
3Measurement precision
If sensor data is used to automatically update geographic data in the motor vehicle, then position determination and route planning are improved, but the device complexity increases
Solution Approach 1:
The patent leverages the multi-functionality of existing navigation device components. The same GPS receiver, camera, and processor used for basic navigation and image capture are also utilized for geographic data supplementation. By making these existing components serve multiple functions, the system achieves improved position determination accuracy without adding significant device complexity.
Solution Approach 2:
The navigation device uses its own existing sensors and processing capabilities to automatically update its geographic database. The system supplements basic geographic data with additional information captured during normal operation, eliminating the need for separate dedicated updating hardware. This self-service approach improves measurement precision while minimizing increases in device complexity.
Data Source
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AI summary
Method for operating a navigation device of a motor vehicle, wherein the navigation device determines the position and/or the route of the motor vehicle using geographical data available on the motor vehicle, wherein at least one piece of geographical information about an area of the motor vehicle environment is determined from the sensor data of at least one sensor device available on the motor vehicle, stored in a storage device as additional geographical data and used to supplement and/or update the geographical data.