Vehicle Position Detection Error Correction via Sensor Cross-Validation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The accuracy of vehicle position detection in driving support systems is compromised due to errors in position information obtained through vehicle-to-vehicle communication, particularly when a surrounding vehicle is no longer detectable by autonomous sensors.
Innovation Solution
A vehicle position detecting apparatus that includes a position measurement unit, an autonomous sensor, a receiver, an identification unit, a position error calculator, and a position corrector. The apparatus calculates and averages position errors over time to correct the position of surrounding vehicles based on communication data, even when they are outside the detection range of the autonomous sensor, and adjusts the correction based on time and distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If position information is obtained through vehicle-to-vehicle communication, then the detection range is extended beyond autonomous sensor range, but the measurement precision deteriorates due to errors in communication data
Solution Approach 1:
The patent uses the autonomous sensor as an intermediary to validate and correct communication data. When the autonomous sensor detects a surrounding vehicle, it serves as a mediator to verify the position information received through vehicle-to-vehicle communication, thereby maintaining detection range extension while improving position accuracy through cross-validation
Solution Approach 2:
The system implements feedback by continuously comparing position information from communication data with position information from autonomous sensor detection. When discrepancies are detected, the system uses the autonomous sensor data as feedback to correct the communication data, ensuring position accuracy is maintained while benefiting from extended detection range
2Measurement precision
If autonomous sensor is used for position detection, then measurement precision is improved, but the detection range is limited to sensor range
Solution Approach 1:
The patent merges two position detection methods: autonomous sensor detection and vehicle-to-vehicle communication. By combining these methods, the system achieves both high measurement precision (from autonomous sensor) and extended detection range (from communication data), resolving the contradiction between precision and range
3Measurement precision
If position correction is performed using averaged position error over time, then measurement precision is improved, but loss of time occurs due to averaging process
Solution Approach 1:
The system performs preliminary action by continuously calculating and storing position errors even when the autonomous sensor is detecting the surrounding vehicle. This preliminary calculation of position errors allows the system to have correction data ready in advance, reducing the time needed for correction when communication data needs to be adjusted
Data Source
AI summary
A vehicle position detecting apparatus includes: a position measurement unit that obtains first position information of a first vehicle; an autonomous sensor that obtains relative position information of a second vehicle; a receiver that receives communication data containing second position information of the second vehicle; an identification unit that performs identification on the second vehicle specified based on the relative position information and the second vehicle from which the communication data is sent; a position error calculator that calculates a position error between a position of the second vehicle specified based on the relative position information and that of the second vehicle specified based on the second position information; and a position corrector that performs, based on the position error, a correction on the position of the second vehicle specified based on the second position information, on a condition that the identified second vehicle is no longer detected by the autonomous sensor.