Vehicle Route Determination with Passage Restriction Comparison

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Solution Overview

Problem

Current navigation devices fail to consider vehicle-specific passage restrictions and road characteristics, leading to potential problems during route travel, such as vertical clearance, horizontal clearance, and weight restrictions, and do not adequately warn drivers of these issues.

Innovation Solution

A method and system that provide road segment passage restriction information and vehicle passage restriction data to determine optimal routes and warn drivers of potential problems by comparing vehicle characteristics with road segment limitations, using a processing unit to adjust route calculations and output warning signals based on threshold values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional navigation devices determine routes based only on general road segment data (length, speed limits), then route calculation is simple and fast, but vehicle-specific passage restrictions (vertical clearance, horizontal clearance, weight restrictions) are not considered, leading to potential travel problems

Engineering Contradiction:
Improveroute suitabilityVSAvoiddata processing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the route determination process into distinct evaluation stages: first evaluating road segment passage restriction information, then comparing it with vehicle passage restriction data, and finally determining the route based on both datasets. This segmentation allows comprehensive consideration of vehicle-specific restrictions while maintaining a structured, manageable processing approach.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary evaluation of passage restrictions before final route determination. The system pre-processes road segment passage restriction information and vehicle passage restriction data, identifying potential conflicts in advance. This preliminary action ensures that vehicle-specific constraints are considered before committing to a route, preventing travel problems.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If navigation devices include comprehensive passage restriction data and vehicle data, then route accuracy for specific vehicles improves, but the system complexity and data processing requirements increase

Engineering Contradiction:
Improveroute determination accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by focusing data collection and processing on specific, relevant parameters rather than comprehensive vehicle and road data. The system selectively evaluates passage restriction information (vertical clearance, horizontal clearance, weight restrictions) that is locally relevant to the route determination task, improving accuracy without requiring complete system complexity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent extracts only the essential passage restriction parameters needed for route determination from broader vehicle and road datasets. By taking out specifically the relevant restriction data (clearance dimensions, weight limits) and comparing them against road segment characteristics, the system achieves precise route determination without processing unnecessary comprehensive vehicle specifications or complete road network data.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If the system compares vehicle passage restriction data with road segment passage restriction information, then potential travel problems are identified, but additional processing time and computational resources are required

Engineering Contradiction:
Improvetravel safetyVSAvoidroute calculation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent performs preliminary comparison of vehicle passage restriction data with road segment passage restriction information before final route determination. By evaluating compatibility in advance and identifying potential conflicts early in the process, the system ensures travel safety without requiring repeated calculations or delays during actual route execution.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent employs efficient, lightweight data structures and comparison algorithms that require minimal computational resources. The passage restriction evaluation uses simple threshold comparisons rather than complex simulations, enabling rapid assessment of vehicle-road compatibility while maintaining high reliability in identifying travel problems.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS7761227B2Route determination and driver warning system
Publication Date: 2010.07.20 HARMAN BECKER AUTOMOTIVE SYST GMBH
  • US7761227B2 patent drawing
  • US7761227B2 patent drawing
  • US7761227B2 patent drawing

AI summary

A system for determining a route and for warning a driver of a vehicle and corresponding methods are provided. The systems include storage units that store road segment passage restriction data and vehicle passage restriction data. The systems further include a working memory unit and a processing unit that determine a route to be displayed on an output unit or that provide a warning signal output, depending upon both the vehicle passage restriction data and the road segment passage restriction data.