Vehicle Dead Reckoning with Peer Motion Correlation
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Solution Overview
Problem
Existing vehicle movement determination methods, such as dead reckoning using inertial measurement units (IMUs), are compromised by environmental conditions like road surface variations and strong winds, leading to inaccuracies in determining the vehicle's heading direction or position.
Innovation Solution
A method and system that utilize information from a second vehicle to identify and exclude sensor indications caused by environmental conditions, allowing for more accurate movement determination by correlating the movement of the first vehicle with the second vehicle and filtering out environmental influences, using a processor and inertial measurement units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dead reckoning technique using IMU is used to determine vehicle movement, then vehicle position and heading direction can be determined, but accuracy is compromised when environmental conditions like road surface variations or strong winds cause unintended vehicle movement
Solution Approach 1:
The patent uses a second vehicle as an intermediary to detect and communicate environmental conditions. The second vehicle's IMU data serves as a mediator to identify environmental effects (like road surface variations or wind) that are then used to correct the first vehicle's movement determination, resolving the contradiction between using IMU for position determination and being affected by environmental factors
Solution Approach 2:
The system implements feedback by continuously monitoring the second vehicle's movement data and using it to identify environmental conditions. This feedback loop allows the system to detect when environmental factors are affecting vehicle movement and adjust the dead reckoning calculations accordingly, maintaining accuracy despite environmental disturbances
2Reliability
If sensor information from IMU is used for dead reckoning, then vehicle movement can be tracked, but environmental conditions cause changes in vehicle movement that affect the accuracy of heading direction determination
Solution Approach 1:
The second vehicle acts as an intermediary sensor system that provides environmental condition data. By using the second vehicle's IMU readings as a mediator, the system can distinguish between intended vehicle movement and movement caused by environmental factors, thereby maintaining both reliability and precision of heading direction determination
Data Source
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AI summary
An illustrative example embodiment of a method of processing information regarding movement of a first vehicle based on information regarding movement of at least one second vehicle includes: receiving a communication from the second vehicle that includes information regarding movement of the second vehicle, determining that the movement of the second vehicle corresponds to movement of the first vehicle, identifying at least one feature of the movement of the second vehicle that indicates an environmental condition that affects the movement of the second vehicle, identifying a sensor indication of movement of the first vehicle that corresponds to the feature of the movement of the second vehicle, and excluding the identified sensor indication from information used to determine movement of the first vehicle.