Indoor Vehicle Positioning Using Motion Sensor and Map Data
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Solution Overview
Problem
Existing systems face challenges in accurately determining a vehicle's location and floor in indoor spaces without additional facilities like beacons, especially where GPS signals are unavailable, leading to limitations in displaying driving information.
Innovation Solution
A driving information display apparatus equipped with a motion sensor, processor, and storage unit that measures vehicle motion and height changes to identify the vehicle's location and floor, using map information and algorithms to output relevant maps and guidance, even in multi-floor indoor spaces without additional facilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS signals are used for location measurement, then location accuracy is improved, but GPS signals cannot be received in indoor spaces
Solution Approach 1:
The patent uses map information and motion sensor data as intermediary elements to bridge the gap between GPS unavailability and location determination needs. The system processes motion sensor measurements through map-based algorithms to infer location, effectively using these intermediaries to overcome the direct signal blockage in indoor environments
Solution Approach 2:
The patent replaces the GPS satellite-based electromagnetic signal system with a ground-based mechanical sensing system using motion sensors. This substitution involves measuring vehicle motion mechanically and using map information to calculate location, thereby eliminating dependence on external satellite signals that cannot penetrate indoor structures
2Measurement precision
If additional facilities like beacons are installed for indoor positioning, then location measurement capability is improved, but system complexity and cost increase
Solution Approach 1:
The patent enables the vehicle's existing motion sensors to serve the dual purpose of both vehicle control and location determination. By processing data from sensors already present in the vehicle through map-based algorithms, the system eliminates the need for separate positioning infrastructure, allowing the vehicle's own components to provide positioning services
Solution Approach 2:
The patent makes the map information database serve multiple functions: navigation routing, location determination, and floor identification. This multi-functionality allows a single database to replace what would otherwise require separate beacon infrastructure and processing systems, reducing overall system complexity
3Adaptability or versatility
If motion sensor data is used for location determination, then GPS dependency is reduced, but measurement errors accumulate
Solution Approach 1:
The patent implements feedback by continuously comparing calculated location with map information and using this comparison to correct accumulated errors. The system uses map-matching techniques where the calculated position is constantly validated against known map features, providing feedback that prevents error accumulation over time
Solution Approach 2:
The patent performs preliminary actions by pre-processing map information into structured databases that contain geometric and topological relationships before they are needed for positioning. This preliminary structuring of spatial data enables more accurate and efficient error correction during real-time location determination
4Measurement precision
If floor identification is implemented in multi-floor spaces, then driving information accuracy is improved, but system complexity increases
Solution Approach 1:
The patent adds the vertical dimension (height/elevation) to the traditional two-dimensional map matching problem. By incorporating height information from motion sensors and comparing it with multi-floor map data, the system extends location determination from a 2D plane to a 3D space, enabling floor identification as a natural consequence of vertical position measurement
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate location identification and floor determination of vehicles in indoor spaces without additional facilities, minimizing errors and providing effective driving guidance, including route navigation and parking information.
Implementation Method 1
a motion sensor configured for measuring the motion of a vehicle
Data Source
AI summary
Provided herein are an apparatus and method for displaying indoor driving information using map information and a motion sensor. A driving information display apparatus includes: a motion sensor configured for measuring the motion of a vehicle; a processor operatively connected to the motion sensor and configured to receive information related to the location of the vehicle and a change in the height of the vehicle, and to perform control to output a map around the vehicle; and a storage unit operatively connected to the processor and configured to store the map information of an indoor space composed of a plurality of floors and an algorithm run by the processor. The processor is further configured to check whether the vehicle has reached a link for entry to the indoor space, and when the vehicle enters the indoor space, identify the floor on which the vehicle is located, and perform control to output a map corresponding to the identified floor.