Navigation System Multi-Layer Road Layer Detection
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Solution Overview
Problem
Current navigation systems fail to accurately determine a vehicle's location on multi-layer road structures, which complicates route guidance and navigation due to the complexity of road systems with surface, elevated, or underground layers.
Innovation Solution
A navigation system that detects the current location, determines road type, calculates average speeds outside and at intersections, and uses speed differences to identify the road layer, enabling accurate location determination on multi-layer road structures for display on a device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If navigation systems use conventional location detection methods, then basic location information can be obtained, but accurate determination of road layer location on multi-layer road structures cannot be achieved
Solution Approach 1:
The patent applies parameter changes by utilizing speed differential data as an additional parameter to determine road layer location. The system calculates the difference between average speed outside intersections and average speed at intersections, using this speed differential parameter to infer whether the vehicle is on an elevated or underground layer, thereby improving measurement precision without adding complex hardware
Solution Approach 2:
The patent replaces mechanical or specialized sensing systems with a computational approach using existing speed and location data. Instead of using specialized hardware to detect road layer, the system substitutes a computational method that processes speed differential parameters to determine vertical position on multi-layer road structures
2Measurement precision
If navigation systems incorporate specialized hardware to detect road layer location, then accurate location determination on multi-layer roads can be achieved, but device cost and complexity increase
Solution Approach 1:
The patent applies self-service by utilizing data already collected by the navigation system's existing sensors (speed and location data) to determine road layer location. The system serves its own need for vertical position information using its own existing operational parameters, eliminating the need for separate specialized detection hardware and reducing manufacturing costs
Solution Approach 2:
The patent makes the existing speed and location sensing systems multi-functional by using them not only for basic navigation purposes but also for determining road layer location. This universal use of existing components avoids the need for specialized hardware, reducing device cost while maintaining measurement precision
3Ease of manufacture
If navigation systems use speed differential method to determine road layer, then accurate location on multi-layer roads can be achieved without specialized hardware, but additional calculation processing is required
Solution Approach 1:
The patent extracts the essential information needed for road layer determination from the existing speed and location data stream. By isolating and focusing on the speed differential parameter specifically related to intersection passages, the system extracts only the necessary computational element needed for vertical position determination, minimizing unnecessary processing complexity
Data Source
AI summary
A method of operation of a navigation system includes: detecting a current location for locating a vehicle; determining a road type as multi-layered at the current location for identifying a multi-layer road structure; calculating a first average speed outside an intersection location; calculating a second average speed at the intersection location; determining a difference speed between the first average speed and the second average speed; and determining a road layer location from the difference speed for locating the current location along the multi-layer road structure for displaying on a device.