Autonomous Vehicle Diagnostic Testing for Fleet-Based Maintenance Detection

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Solution Overview

Problem

Autonomous vehicles face challenges in efficiently identifying maintenance and repair needs due to the absence of human assessment, with regular inspections being costly and time-consuming, and sensor measurements being difficult to normalize for road conditions and vehicle age.

Innovation Solution

An autonomous vehicle is instructed to drive a specific course to collect diagnostic measurements, which are analyzed against a dataset from similar vehicles to determine if repairs are needed, using a combination of sensor data and machine learning algorithms to classify maintenance requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual inspections are conducted to identify damage and maintenance needs, then detection accuracy is improved, but time consumption and cost increase

Engineering Contradiction:
Improvedetection accuracyVSAvoidtime consumption
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical inspection with an automated system using sensors (cameras, lidars, radars) and machine learning algorithms to detect damage and maintenance needs. The autonomous vehicle captures images and sensor data, which are then analyzed by trained machine learning models to identify issues without human intervention, thereby reducing time consumption while maintaining detection accuracy.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The autonomous vehicle performs self-diagnosis by collecting and analyzing its own sensor data to identify maintenance needs and damage. The vehicle autonomously captures images of its components, processes them through machine learning algorithms, and determines its own maintenance requirements without external inspection, enabling continuous operation and reducing downtime.

Inventive Principle:
Principle #25Self-service

2Reliability

If regular manual inspections are performed, then maintenance needs are identified, but cost and time consumption increase

Engineering Contradiction:
Improvemaintenance identificationVSAvoidvehicle availability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent replaces costly manual inspection systems with an automated sensor-based detection system. Multiple sensors (cameras, lidars, radars) continuously monitor vehicle components, and machine learning algorithms analyze the data to identify maintenance needs, eliminating the need for scheduled manual inspections and reducing vehicle downtime.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The autonomous inspection system operates continuously as the vehicle moves, capturing sensor data at all times rather than requiring periodic stops for manual inspection. This continuous monitoring enables real-time detection of maintenance issues, improving vehicle availability while maintaining reliable maintenance identification.

Inventive Principle:
Principle #20Continuity of useful action

3Measurement precision

If sensor measurements are collected for diagnostic purposes, then maintenance accuracy is improved, but data normalization difficulty increases

Engineering Contradiction:
Improvemaintenance accuracyVSAvoiddata processing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces machine learning algorithms as intermediaries between raw sensor measurements and maintenance decisions. These algorithms automatically process, normalize, and interpret multi-source sensor data (images, lidar points, radar signals), handling the complexity of data integration and normalization while providing accurate maintenance predictions.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system transforms raw sensor measurements into standardized features and parameters through machine learning processing. The algorithms convert diverse sensor data into normalized representations that can be directly compared and analyzed, automatically adjusting for variations in sensor conditions, vehicle age, and environmental factors.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11794759B2Automatic testing of autonomous vehicles
Publication Date: 2023.10.24 GM CRUISE HOLDINGS LLC
  • US11794759B2 patent drawing
  • US11794759B2 patent drawing
  • US11794759B2 patent drawing

AI summary

The present technology is effective to cause at least one processor to instruct an autonomous vehicle to navigate a specific course and to record diagnostic measurements while navigating the specific course, receive the diagnostic measurements from the autonomous vehicle, and analyze the diagnostic measurements from the autonomous vehicle in a context provided by a collection of diagnostic measurement data collected from a fleet of similar autonomous vehicles navigating the specific course.