Vehicle Start Control with Obstacle Detection Feedback

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing motor vehicle longitudinal guidance systems rely heavily on obstacle detection systems, leading to driver inattentiveness due to the assumption of 100% detection reliability, which can result in collisions when obstacles are not recognized, especially when the driver is distracted.

Innovation Solution

The system suppresses automatic start-up if the close-range sensor system is defective and detects an obstacle, allowing the vehicle to roll with reduced acceleration, prompting the driver's attention through haptic feedback and warning signals, ensuring the driver can intervene if necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the system suppresses automatic start-up when an obstacle is detected, then collision safety is improved, but the vehicle cannot follow the vehicle in front timely, reducing traffic flow efficiency

Engineering Contradiction:

Improvecollision safetyVSAvoidtraffic flow efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system changes the acceleration parameter dynamically based on obstacle detection. When an obstacle is detected, the system reduces the acceleration rate during automatic start-up, allowing the vehicle to move forward slowly enough to avoid collisions while still progressing through traffic. This parameter adjustment resolves the contradiction between safety and efficiency.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If the driver gives a release signal long in advance, then ease of operation is improved, but the driver may become inattentive and miss obstacles, reducing safety

Engineering Contradiction:

Improvedriver convenienceVSAvoiddriver attention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system provides continuous feedback to the driver during automatic start-up by monitoring obstacle detection status and adjusting acceleration accordingly. This feedback mechanism keeps the driver engaged with the system's actions while maintaining safety, resolving the contradiction between ease of operation and driver attention.

Inventive Principle:

Principle #23Feedback

3Reliability

If the system relies on obstacle detection to prevent collisions, then safety is improved, but false negatives can still cause collisions, reducing reliability

Engineering Contradiction:

Improveobstacle detection reliabilityVSAvoidcollision risk from undetected obstacles

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system prepares for potential detection failures by reducing acceleration during automatic start-up when obstacles are detected. This creates a safety buffer that compensates for possible false negatives in obstacle detection, ensuring that even if an obstacle is missed, the reduced speed provides additional reaction time and reduces collision severity.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentEP2280368B1Process to operate a vehicle with a speed control system comprising a long far and near range sensors

Publication Date: 2015.09.09 AUDI AG

Figure 1~2
Figure 3
Figure 4

AI summary

The method involves starting a motor vehicle (1) by detecting a drive of the vehicle in spite of simultaneous detection of hindrance with an acceleration without previous driver sided signal. The acceleration is marginally compared with the acceleration during the starting. An independent claim is also included for a motor vehicle with a control unit.