Indoor-Capable Navigation Path Planning for Low-Sunlight Travel
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Solution Overview
Problem
Existing navigation devices are not optimized to recommend paths with low sunshine levels for vehicles that can travel within buildings, as they primarily focus on road paths.
Innovation Solution
A moving body equipped with an acquisition unit for position information, a recommended path calculation unit, an imaging unit for road surface imaging, and a sunshine degree distribution calculation unit, which calculates and notifies a recommended course to minimize sunlight exposure by dividing road surfaces into small areas and evaluating total sunshine degrees along candidate paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a navigation device recommends paths based on road surfaces, then it can guide vehicles on roads, but it cannot recommend optimal paths for vehicles that travel within buildings
Solution Approach 1:
The navigation device is enhanced to handle multiple path types (road surfaces and floor surfaces) through a unified processing framework. The imaging unit and sunshine degree distribution calculation unit can process both road surfaces and floor surfaces, making the device versatile for both outdoor and indoor navigation scenarios
2Device complexity
If the navigation device only considers road paths, then it simplifies path calculation, but it cannot provide paths with low sunshine levels that pass through building interiors
Solution Approach 1:
The path recommendation system is segmented into multiple independent modules: imaging unit for capturing surfaces, sunshine degree distribution calculation unit for analyzing sunlight, and recommended path calculation unit for generating paths. This segmentation allows the system to handle complex indoor-outdoor path planning without overwhelming complexity
Solution Approach 2:
The sunshine degree distribution map serves as an intermediary data structure that bridges the imaging unit and the path calculation unit. This intermediary allows the system to evaluate sunlight conditions along candidate paths and select paths with lower sunshine exposure
3Measurement precision
If the navigation device uses detailed sunshine degree distribution calculation, then it can identify paths with low sunshine levels, but it increases calculation complexity
Solution Approach 1:
The sunshine degree distribution calculation divides the road surface area into multiple small areas and calculates sunshine degree for each small area independently. This segmentation enables precise measurement of sunshine conditions while allowing parallel computation to manage complexity
Solution Approach 2:
The system calculates sunshine degrees for multiple candidate paths and their respective small areas, performing more calculations than strictly necessary for a single path. This excessive action ensures that the optimal path with lowest sunshine exposure is identified among all possibilities
Data Source
AI summary
A moving body, which a person boards, includes an acquisition unit configured to acquire current position information of the moving body, and a recommended path calculation unit configured to calculate a path that is a recommended path toward a predetermined destination and passes through an interior of at least one building, based on the current position information and the predetermined destination.