Vehicle Task Trigger Control for Processor Failure Timing

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Solution Overview

Problem

Autonomous driving systems face challenges in ensuring safe and robust operation when individual processors fail to complete tasks within predetermined time points, leading to potential safety hazards and system instability.

Innovation Solution

A vehicle control method that includes a memory to store predetermined time points for task completion and a detector to identify processor malfunctions, triggering alternative tasks or peripheral tasks based on completion data, ensuring safe operation even if primary tasks are not completed on time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple tasks are performed in multiple processors for autonomous driving operations, then the functionality and capability of the autonomous driving system is improved, but the reliability deteriorates when individual processors fail to complete tasks within predetermined time points

Engineering Contradiction:

Improveautonomous driving capabilityVSAvoidsystem safety

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system stores predetermined time points for task completion in advance, and the detector is pre-configured to monitor whether tasks are completed by these predetermined time points. When a task is not completed by its predetermined time point, the system has pre-established alternative tasks and peripheral tasks ready to be executed, ensuring immediate response to processor failures without compromising system safety

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements a safety mechanism by creating alternative tasks and peripheral tasks in advance that can compensate for failures in primary tasks. The detector continuously monitors task completion status and triggers alternative tasks when predetermined time points are missed, providing a cushion against processor failures and maintaining system reliability

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Measurement precision

If the system waits for task completion at predetermined time points, then the measurement precision of task status is improved, but the loss of time increases when tasks are not completed on time

Engineering Contradiction:

Improvetask completion status detectionVSAvoidsystem response time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The detector continuously monitors task completion status and provides feedback by comparing actual completion time with predetermined time points. When a task fails to complete by its predetermined time point, the feedback mechanism immediately triggers alternative tasks and peripheral tasks, ensuring precise detection of task status while minimizing time loss through automated response

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The detector acts as an intermediary between task execution and system response. It monitors task completion status against predetermined time points and mediates the transition to alternative tasks when failures are detected, enabling precise measurement of task status while reducing overall system response time through automated intervention

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If alternative tasks are triggered when primary tasks fail, then the reliability is improved, but the device complexity increases due to multiple task management

Engineering Contradiction:

Improvesystem safetyVSAvoidtask management structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments tasks into primary tasks, alternative tasks, and peripheral tasks, with each segment having specific functions and predetermined time points. This segmentation allows the system to manage complexity by organizing tasks into distinct categories with clear execution priorities and failure response protocols, maintaining reliability while structuring the system for manageable complexity

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11853146B2Vehicle and control method thereof

Publication Date: 2023.12.26 HYUNDAI MOTOR CO LTD

AI summary

A vehicle includes a memory configured to store predetermined points in time at which each of a plurality of tasks is to be performed, the plurality of tasks including a first task and a second task, and a detector configured to determine a malfunction of at least one processor of a plurality of processors performing the plurality of tasks, wherein the detector is configured to control the at least one processor to output trigger signals for the first task and the second task based on whether one of the first and second tasks is completed at its respective predetermined point in time.