Vehicle Route Guidance System with Dimensional Traversability Checks

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Solution Overview

Problem

Route guidance systems do not account for vehicle specifications, leading to potential difficulties in navigating intersections based on vehicle size and road dimensions, which can impair user convenience.

Innovation Solution

An information processing apparatus that determines a travel route by assessing whether a vehicle can traverse road nodes based on its dimensional information and road widths, adjusting the route if necessary to ensure navigability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If route guidance is provided without considering vehicle specifications, then the route determination process is simple and quick, but the guidance may not be suitable for vehicles with specific dimensional constraints, impairing user convenience

Engineering Contradiction:
Improveuser convenienceVSAvoidroute determination complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by acquiring vehicle dimensional information in advance and pre-storing it in the controller. When determining a route, the controller retrieves this pre-stored information and uses it to evaluate whether the vehicle can traverse each road node, checking if the vehicle's dimensions are compatible with the road widths at intersections and narrow passages along the route

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system changes the route determination parameters by incorporating vehicle-specific dimensional parameters (vehicle width, length, and height) into the routing algorithm. The controller compares these parameters against road network parameters (road widths at intersections and passages) to dynamically adjust route selection criteria, ensuring the chosen route accommodates the specific vehicle's physical constraints

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If route guidance considers vehicle specifications, then user convenience and navigation accuracy are improved, but the processing time and computational complexity increase

Engineering Contradiction:
Improveroute suitability accuracyVSAvoidroute determination time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary actions by acquiring vehicle dimensional information in advance and pre-storing it in the controller. When determining a route, the controller retrieves this pre-stored information and uses it to evaluate whether the vehicle can traverse each road node, checking if the vehicle's dimensions are compatible with the road widths at intersections and narrow passages along the route

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The controller focuses its detailed dimensional compatibility checks only on critical road nodes along the determined route, such as intersections and narrow passages, rather than performing exhaustive checks on every segment of the road network. This partial action approach maintains high accuracy for critical decision points while reducing overall computational burden

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS11815358B2Information processing apparatus, information processing system, information processing method, and vehicle
Publication Date: 2023.11.14 TOYOTA JIDOSHA KK
  • US11815358B2 patent drawing
  • US11815358B2 patent drawing
  • US11815358B2 patent drawing

AI summary

An information processing apparatus includes a controller. The controller outputs a travel route determined based on a departure point and a destination of a first vehicle in a road network including road nodes and road links. The controller judges whether the first vehicle can traverse a target node, which is a road node among the road nodes included in the travel route, based on dimensional information for the first vehicle, a road width of an entry link entering the target node, and a road width of an exit link exiting from the target node. The controller changes the travel route when it is judged that the first vehicle cannot traverse the target node.