Off-Road Navigation Deviation Guidance System
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Solution Overview
Problem
Off-road travelers deviating from pre-recorded tracks face safety risks due to lack of reliable direction guidance for returning to the track, especially in hazardous terrain, where there are no road or street information paths to rejoin the track.
Innovation Solution
A system that provides real-time direction guidance based on deviation distance from a pre-recorded track, switching between modes to guide the traveler back to the track, either to the deviation point or to the closest point on the track, using a vehicle-mounted or mobile device display, with threshold values determining the guidance mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system provides continuous direction guidance to travelers on pre-recorded tracks, then traveler safety is improved, but the system complexity increases due to real-time location tracking and deviation detection requirements
Solution Approach 1:
The system automatically performs location tracking, deviation detection, and guidance provision without requiring traveler input or manual intervention. The GPS receiver continuously obtains location data, the processor automatically compares it with the pre-recorded track, and the display system proactively provides direction guidance when deviations are detected, making the safety function self-activating and reducing operational complexity.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where the traveler's current location is continuously monitored and fed back to the processor, which compares it with the expected track position. When a deviation exceeds the threshold, the system generates direction guidance feedback to steer the traveler back to the track, creating an automatic safety correction loop that improves reliability without requiring constant human decision-making.
2Ease of operation
If the system switches between multiple guidance modes based on deviation distance, then guidance effectiveness is improved, but the control logic complexity increases
Solution Approach 1:
The system dynamically adjusts the guidance mode based on the real-time deviation distance. When the traveler is within the threshold distance, the system provides minimal guidance; when the deviation exceeds the threshold, the system automatically switches to active direction guidance mode. This dynamic adaptation allows the system to provide effective guidance only when necessary, improving ease of operation while keeping the control logic manageable through clear conditional thresholds.
3Loss of time
If the system provides direction guidance to the closest point on the track rather than the deviation point, then rejoining time is reduced, but the navigation accuracy decreases
Solution Approach 1:
The system changes the target parameter for navigation based on the deviation scenario. Instead of always targeting the exact deviation point, the system calculates and targets the closest point on the pre-recorded track when a significant deviation is detected. This parameter change optimizes the rejoining path to minimize time loss while the system maintains sufficient navigation accuracy by continuously monitoring position and adjusting guidance as the traveler approaches the track.
Data Source
AI summary
Systems and methods for providing direction guidance to a traveler navigating off-road are disclosed. In some embodiments, different modes of direction guidance are provided depending on a deviation distance from a pre-recorded, off-road track. A pre-recorded track can be generated from an ordered list of locations. A real-time deviation distance between the traveler and the track can be determined. Based at least in part on the real-time deviation distance, the system determines whether the traveler is on track. If the traveler has deviated, the system may provide direction guidance toward a location where the traveler deviated from the track. The system may determine that the traveler has deviated too far from the track and provide direction guidance toward a closest point on the track. The system can display direction guidance on a vehicle-mounted display and/or on a mobile device.