Indoor Navigation Using Adaptive RSSI and Visual Landmarks
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Solution Overview
Problem
Existing indoor positioning systems face challenges in accurately measuring distances and providing intuitive navigation maps within indoor environments due to fluctuations in near field wireless signal strength, such as Bluetooth Low Energy (BLE) signals, and the lack of external server dependency.
Innovation Solution
An electronic apparatus that uses multi-step distance measurement algorithms based on received signal strength indicator (RSSI) values and motion information to determine user position, generating optimized navigation maps without requiring external server access, utilizing a transceiver, sensor, and processor to process near field wireless signals and building map data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If triangulation and fingerprinting techniques are used to measure distance in indoor environments, then positioning functionality is provided, but measurement precision deteriorates due to signal strength fluctuations
Solution Approach 1:
The patent applies dynamics by making the distance measurement approach adaptive rather than static. The system dynamically switches between direct distance measurement (when landmarks are visible) and landmark-based distance measurement (when landmarks are not visible), allowing the positioning system to adapt to changing indoor environmental conditions and maintain reliability while improving precision
Solution Approach 2:
The patent introduces visual landmarks as intermediaries to resolve the contradiction. When direct signal-based distance measurement is unreliable due to signal fluctuations, the system uses visual landmarks (detected via camera) as intermediate reference points to calculate distance, thereby maintaining measurement precision while compensating for signal reliability issues
2Ease of operation
If building floor plan data is used to generate navigation maps, then navigation functionality is provided, but device complexity increases due to data processing requirements
Solution Approach 1:
The patent applies self-service by enabling the mobile device to autonomously capture and process visual landmarks using its built-in camera and processor. Instead of relying on pre-stored detailed floor plans from external sources, the system uses the device's own resources to detect landmarks and generate navigation information, reducing the complexity of external data processing while maintaining ease of operation
Solution Approach 2:
The patent replaces the traditional mechanical/systematic approach of using pre-defined building floor plan data with a visual recognition-based system. Instead of processing complex building management system data, the system uses image processing and visual landmark recognition to generate navigation maps, simplifying the data processing requirements while maintaining navigation usability
Data Source
AI summary
An electronic apparatus for indoor positioning navigation, a method thereof, and a system thereof are provided. The electronic apparatus includes a transceiver for receiving near field wireless signals, a sensor for detecting motion of the electronic apparatus, a display, and at least one processor configured to determine if building map data of a building is received through the transceiver, generate a navigations map according to a type of the received building map data when the building map data is received, and control the display to display, a map matching a position of the electronic apparatus to a position of a destination of the electronic apparatus on the generated navigation map, by using one among intensity information of the wireless signals received through the transceiver and the motion information of the electronic apparatus detected through the sensor.