Pedestrian Navigation Prompt Timing Based on Road Width
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pedestrian navigation systems face inaccuracies due to differences in road widths between navigation planning routes, leading to incorrect turning prompts and untimely route replanning prompts.
Innovation Solution
A method and system that determine a navigation prompt time based on the road width of the current road section by adjusting the navigation prompt range, using the road width and confidence level to dynamically adjust the prompt timing, ensuring accurate navigation by matching the user's position with the navigation planning route information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed navigation prompt range is used for all road sections, then the navigation system is simple to implement, but the navigation prompt timing becomes inaccurate due to road width differences
Solution Approach 1:
The navigation prompt range is made dynamic by adjusting it according to the actual road width of each road section. The system calculates the road width based on positioning results and route information, then dynamically sets the prompt range as a multiple of the road width (e.g., 0.5 to 2 times the road width). This allows the prompt timing to adapt to different road widths automatically, improving accuracy without requiring manual configuration for each road section.
Solution Approach 2:
The system changes the parameter of navigation prompt range based on the road width parameter. By establishing a relationship where the prompt range is proportional to the road width (with a configurable multiple), the system automatically adjusts the timing parameters to match the actual road conditions, resolving the contradiction between simplicity and accuracy.
2Measurement precision
If the navigation prompt range is enlarged to cover wider roads, then navigation prompts are timely for wide roads, but prompts become premature for narrow roads
Solution Approach 1:
The system applies local quality by customizing the navigation prompt range for each road section according to its specific width characteristics. Instead of using a uniform prompt range for all roads, the system calculates the appropriate prompt range locally for each road section based on its width, ensuring that the prompt timing is optimized for the local road conditions rather than being constrained by a global fixed parameter.
Solution Approach 2:
The prompt range dynamically adapts to different road widths through automatic calculation. The system determines the road width from positioning data and route information, then dynamically adjusts the prompt range as a multiple of this width, enabling the navigation system to automatically adapt to various road types without manual intervention.
3Reliability
If navigation prompts are given in advance for all intersections, then users have enough time to prepare, but prompts may be given at wrong intersections due to road width variations
Solution Approach 1:
The system performs preliminary action by calculating the navigation prompt range in advance based on the road width, but the actual prompt timing is determined dynamically when the user enters the calculated range. This allows the system to prepare the appropriate prompt range beforehand while ensuring the prompt is given at the correct intersection based on real-time position monitoring within that range.
Solution Approach 2:
The system uses feedback by continuously monitoring the user's position relative to the calculated prompt range. When the user enters the predetermined range (which is based on road width), the system triggers the navigation prompt. This feedback mechanism ensures that prompts are given at the correct intersection by verifying the user's actual position against the dynamically calculated range boundaries.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Embodiments of the present invention provide a pedestrian navigation processing method and system, and a terminal device. The pedestrian navigation processing method includes: determining, according to a current position of a user and navigation planning route information, a road section on which the user is currently located, where the navigation planning route information includes route information of all road sections between a departure place and a destination; obtaining a road width of the road section according to a positioning result obtained when the user walks on the road section and route information of the road section; determining, according to the road width, a navigation prompt time corresponding to the road section; and performing navigation prompting for the user according to the navigation prompt time. The embodiments of the present invention may perform accurate navigation for a pedestrian.