Virtual Vehicle Controls With Synchronized Real-Time Motion Simulation
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Solution Overview
Problem
Current vehicle development support systems are inefficient in evaluating the operational feeling of operators with operation apparatuses, as they lack the ability to simulate the motion of in-vehicle devices and vehicle behavior, requiring costly and time-consuming physical prototypes for sensory evaluation.
Innovation Solution
A vehicle development support system incorporating a visualization apparatus, virtual operation apparatus, electronic control unit, real-time simulator, and synchronization apparatus to generate and simulate the operational experience of in-vehicle devices without physical prototypes, allowing for synchronized communication and real-time video updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If visual simulation is used to evaluate operation apparatus arrangement, then evaluation cost and time are reduced, but physical operational feeling cannot be experienced
Solution Approach 1:
The patent creates a virtual copy of the operation apparatus and vehicle environment that replicates physical operations. The virtual operation apparatus receives input signals from operators and generates operation signals that are processed by the real-time simulator to produce feedback, creating a faithful copy of the physical system's behavioral characteristics without requiring physical prototypes.
Solution Approach 2:
The patent replaces the mechanical physical prototype system with a computational simulation system. Instead of building and testing physical vehicles with actual operation apparatuses, the system uses software-based virtual environments combined with real-time physics simulation to substitute mechanical interactions with computational models that replicate physical behavior.
2Power
If running simulation is performed without motion simulation, then computational load is reduced, but in-vehicle device motion cannot be evaluated
Solution Approach 1:
The patent implements continuous real-time simulation that continuously calculates and updates the motion states of in-vehicle devices during the evaluation process. The real-time simulator continuously processes operation signals and generates updated position, velocity, and acceleration data for display to the operator, maintaining an ongoing simulation of device motion throughout the evaluation session.
Solution Approach 2:
The patent introduces a real-time simulator as an intermediary component between the virtual operation apparatus and the display system. This intermediary processes operation signals, calculates device motion states using physics models, and generates simulation results that are fed back to the display, enabling motion evaluation without requiring full physical prototypes.
3Measurement precision
If synchronized real-time simulation is implemented, then operational feeling evaluation accuracy is improved, but system complexity increases
Solution Approach 1:
The patent divides the evaluation system into distinct functional modules: a virtual operation apparatus for receiving input, a real-time simulator for computing motion states, and a display system for presenting feedback. Each module performs a specific function and can be independently developed, tested, and modified, reducing overall system complexity while maintaining evaluation precision through their coordinated operation.
Data Source
AI summary
A vehicle development support system includes a visualization apparatus that generates a video including an operation apparatus in a vehicle; a virtual operation apparatus that displays the video and outputs an operation signal corresponding to a pseudo operation input by an operator on the displayed video; an ECU that outputs a control signal for controlling an in-vehicle device in response to the operation signal; a real-time simulator that simulates a motion of the in-vehicle device in response to the control signal and outputs a simulation result to the visualization apparatus and the ECU; and a synchronization apparatus that synchronizes communication in which the simulation result in the real-time simulator is input into the ECU with communication in which the control signal is input into the real-time simulator. The visualization apparatus updates the video including the operation apparatus in accordance with the simulation result in the real-time simulator.