Vehicle Route Deriving Unit Minimizing Acceleration for Occupant Activity
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Solution Overview
Problem
Autonomous driving vehicles hinder occupants' activities due to excessive shaking during routes with large ups and downs or sharp turns, disrupting activities like drawing or sketching.
Innovation Solution
A vehicle system that acquires in-vehicle activity information and traveling road information to derive a traveling route minimizing permitted accelerations, using a permitted acceleration table to ensure the occupant can perform activities comfortably without excessive vehicle shaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the vehicle takes a route with large ups and downs or sharp turns to reach the destination, then the traveling time is reduced, but the occupant's activity is hindered due to excessive vehicle shaking
Solution Approach 1:
The system changes the parameter of acceleration magnitude by selecting different traveling routes. The traveling route deriving unit compares multiple routes and selects one where acceleration magnitude remains within a range that does not hinder the occupant's activity, thus reducing vehicle shaking while maintaining reasonable travel time
Solution Approach 2:
The system performs preliminary assessment of multiple traveling routes before actual travel by acquiring traveling road information in advance and evaluating acceleration characteristics. This allows the system to pre-select a route that balances travel time and occupancy comfort
2Object-affected harmful factors
If the vehicle takes a route with small ups and downs and gentle turns to minimize shaking, then the occupant's activity is not hindered, but the traveling time increases
Solution Approach 1:
The system optimizes the acceleration parameter by deriving a traveling route where acceleration magnitude is maintained within a permissible range. This ensures minimal vehicle shaking while avoiding excessive travel time by not selecting unnecessarily detoured routes
3Loss of time
If the vehicle accelerates quickly to reach the destination faster, then the traveling time is reduced, but the occupant's activity is disrupted due to large acceleration
Solution Approach 1:
The system controls the acceleration parameter by selecting routes with gentle gradients and smooth curvature. The traveling route deriving unit evaluates acceleration characteristics of candidate routes and selects one where acceleration remains within a range that does not disrupt the occupant's activity
Solution Approach 2:
The system performs preliminary evaluation of acceleration characteristics for multiple candidate routes before travel. By acquiring traveling road information in advance and analyzing acceleration profiles, the system pre-selects a route that achieves reasonable travel time without excessive acceleration
Data Source
AI summary
A vehicle includes an in-vehicle activity information acquisition unit, a traveling road information acquisition unit, and a traveling route deriving unit. The in-vehicle activity information acquisition unit is configured to acquire in-vehicle activity information indicating content of an activity to be performed by an occupant in the vehicle while the occupant is traveling on the vehicle. The traveling road information acquisition unit is configured to acquire traveling road information indicating a state of a traveling road relating to a magnitude of an acceleration to be applied to the vehicle. The traveling route deriving unit is configured to derive a traveling route of the vehicle, on a basis of the in-vehicle activity information and the traveling road information.