Driving Assistance Path Planning for Smooth Obstacle Avoidance

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Solution Overview

Problem

Existing autonomous driving assistance systems face limitations in obstacle avoidance due to the limited detection range of cameras and millimeter-wave radar, often requiring sudden turns or decelerations that burden passengers.

Innovation Solution

A driving assistance device and computer program that generate a recommended travel path to avoid obstacles by obtaining road conditions and obstacle information beyond the detection range, using map information and markings to plan a path that avoids obstacles before the vehicle reaches them.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If obstacle detection is performed using camera and millimeter-wave radar, then obstacle detection capability is improved, but detection range is limited to area near vehicle causing sudden turns or deceleration

Engineering Contradiction:

Improveobstacle detection capabilityVSAvoiddetection range

Core Design Contradiction:

Measurement precisionVSArea of stationary object

Solution Approach 1:

The patent introduces map information as an intermediary to extend the detection range. By overlaying map data (which includes obstacle information from other sources) with real-time sensor data, the system achieves awareness of obstacles beyond the physical detection range of cameras and radar, thus avoiding sudden maneuvers

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary obstacle detection by utilizing map information that contains pre-collected obstacle data. This allows the vehicle to identify potential obstacles before they enter the immediate detection range, enabling early planning of avoidance routes and smooth execution of avoidance maneuvers

Inventive Principle:

Principle #10Preliminary action

2Speed

If avoidance route is searched after obstacle detection, then real-time obstacle response is improved, but avoidance options are limited causing burden on passenger

Engineering Contradiction:

Improveobstacle response speedVSAvoidpassenger comfort

Core Design Contradiction:

SpeedVSEase of operation

Solution Approach 1:

The system performs preliminary route planning by generating multiple candidate avoidance routes in advance using map information before the vehicle actually encounters the obstacle. When an obstacle is detected, the system can quickly select from pre-generated routes rather than searching from scratch, enabling both fast response and passenger comfort through smooth, pre-planned maneuvers

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12584755B2Driving assistance device with obstacle advoidance operation and computer program

Publication Date: 2026.03.24 AISIN CORP

AI summary

There are provided a driving assistance device and a computer program that provide appropriate driving assistance that does not place a burden on a passenger of a vehicle when an obstacle which becomes a factor that hinders travel of the vehicle is present on a planned travel route of the vehicle. Specifically, when an obstacle which becomes a factor that hinders travel of a vehicle is present on a planned travel route of the vehicle, a cost indicating a burden on a passenger is calculated for a plurality of candidates for avoidance operation for avoiding the obstacle, avoidance operation recommended to avoid the obstacle is selected from among the plurality of candidates for avoidance operation by comparing the calculated costs, a travel path recommended for the vehicle to travel along is generated in accordance with the selected avoidance operation, and driving assistance for the vehicle is provided based on the generated travel path.