Accuracy-Aware Observational Data Synchronization for Traffic Positioning

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Solution Overview

Problem

Existing digital twin technologies for recreating real-world traffic environments in a virtual space fail to consider data accuracy during dataset synchronization, leading to potential decreases in the accuracy of synchronized observational datasets.

Innovation Solution

A data generation device selects reference data based on accuracy information to synchronize observational datasets, ensuring that the datasets are aligned at the same point in time, thereby improving the accuracy of positional calculations for objects in the virtual space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If reference data is selected without considering data accuracy, then the synchronization process is simple and fast, but the accuracy of the synchronized observational dataset decreases

Engineering Contradiction:

Improveaccuracy of synchronized observational datasetVSAvoidcomplexity of reference data selection process

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent changes the parameter of reference data selection from arbitrary selection to selection based on accuracy evaluation. The system evaluates accuracy information of candidate reference datasets and selects the one with the highest accuracy, thereby improving the accuracy of the synchronized observational dataset without significantly increasing system complexity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent performs preliminary evaluation of data accuracy before the synchronization process. By pre-assessing the accuracy information of candidate reference datasets and selecting the most accurate one in advance, the system ensures high synchronization accuracy while maintaining efficient processing.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If reference data is selected based on accuracy information, then the accuracy of the synchronized observational dataset is improved, but the data selection process becomes more complex

Engineering Contradiction:

Improvereliability of positional calculationVSAvoiddifficulty of evaluating data accuracy

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent replaces manual or complex mechanical evaluation methods with automated information processing. The accuracy evaluation is performed through computational analysis of metadata and data characteristics, substituting complex manual assessment with efficient algorithmic evaluation that maintains reliability while reducing operational difficulty.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If observational datasets are synchronized without accuracy consideration, then the processing time is short, but the position calculation accuracy decreases

Engineering Contradiction:

Improveposition calculation accuracyVSAvoidtime for data synchronization

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs accuracy evaluation and reference data selection as a preliminary action before the main synchronization process. By identifying and selecting the most accurate reference data in advance, the system avoids iterative adjustments during synchronization, thereby maintaining high position calculation accuracy while minimizing total processing time.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4618018A1Data generation device, data generation method, data generation program, and traffic service providing system

Publication Date: 2025.09.17 TOYOTA JIDOSHA KK

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AI summary

A data generation device includes a communication device and processing circuitry. The communication device is configured to obtain, from sensors, observational datasets that have been obtained by continuously observing an object from different positions. The processing circuitry is configured to select reference data based on accuracy information related to the observational datasets, and generate a synchronized observational dataset by synchronizing the observational datasets with each other based on the reference data. The synchronized observational dataset is configured to be used to calculate a position of the object corresponding to a point in time after the observational datasets were obtained.