3D Printer Health Diagnosis Using Sensor Data and Machine Learning

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Solution Overview

Problem

Conventional methods for diagnosing 3D printer failures rely on subjective operator experience and offline measurement, leading to inefficiencies and material waste, as they lack objective and consistent means to assess the health state of printer components.

Innovation Solution

A method and apparatus using sensors to collect acceleration and sound data during the printing process, extracting feature elements, and applying machine learning to diagnose the health state of 3D printer components, enabling objective and consistent diagnosis and prediction of failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If offline measurement and visual inspection are used to diagnose 3D printer failures, then the diagnosis can be performed with simple equipment, but the process stops production and wastes time and materials

Engineering Contradiction:
Improvediagnosis equipmentVSAvoidprinting process efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent applies preliminary action by collecting sensor data (acceleration, sound, temperature, vibration) during the 3D printing process before failures occur. The system performs real-time analysis of this data to detect early signs of component degradation, enabling diagnosis before actual failures stop production. This allows the printing process to continue uninterrupted while maintaining component health monitoring.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces manual visual inspection and offline measurement with automated sensor-based monitoring systems. Acceleration sensors, acoustic emission sensors, temperature sensors, and vibration sensors automatically collect and analyze data, substituting human operators and simple inspection tools with an integrated electronic monitoring system that provides continuous real-time diagnosis without interrupting production.

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

2Device complexity

If operator experience is relied upon for failure diagnosis, then no additional equipment is needed, but the diagnosis becomes subjective and inconsistent

Engineering Contradiction:
Improvediagnosis systemVSAvoiddiagnosis consistency
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent implements feedback by continuously collecting sensor data during printing operations and using machine learning algorithms to analyze patterns indicating component health status. The system provides objective, data-driven diagnosis feedback that replaces subjective operator judgment. The accumulated data creates a knowledge base that improves diagnostic accuracy over time, ensuring consistent and reliable failure detection regardless of operator experience levels.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-diagnosis by automatically analyzing its own operational data through embedded sensors and processing units. The 3D printer monitors its own component health status without requiring external inspection, enabling autonomous detection of anomalies and predictive maintenance scheduling based on actual component conditions rather than manual assessment.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If post-printing diagnosis is performed using measurement equipment, then accurate detection of internal and external defects is possible, but significant time and material waste occurs due to process stoppage

Engineering Contradiction:
Improvedefect detection accuracyVSAvoidprocess downtime
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent enables continuous useful action by performing diagnosis operations concurrently with the 3D printing process. Sensor data is collected and analyzed in real-time without interrupting material deposition or layer formation. This continuous monitoring approach maintains production flow while simultaneously detecting component degradation and predicting failures before they occur, eliminating the need for post-printing inspection stoppages.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system performs preliminary diagnosis actions by detecting early signs of component failure through sensor monitoring during normal operation. By identifying anomalies in acceleration patterns, acoustic emissions, temperature variations, or vibration characteristics before they lead to actual failures, the system enables preventive maintenance scheduling that avoids urgent process stoppages and material waste associated with reactive repairs.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables robust, online diagnosis of 3D printer components, reducing downtime and material waste, improving productivity, and enhancing the quality of output objects by predicting failures and performing preventative maintenance.

Implementation Method 1

collecting at least one of acceleration data and sound data due to a movement of a 3D printer component during a 3D printing process as collection data through at least one of at least one acceleration sensor

Methodology Applied
Scientific EffectAcceleration detection: Accelerometer

Implementation Method 2

collecting at least one of acceleration data and sound data due to a movement of a 3D printer component during a 3D printing process as collection data through at least one of at least one acceleration sensor and an acoustic emission sensor

Methodology Applied
Scientific EffectAcoustic emission: Acoustic Emission

Data Source

PatentUS11506574B2Methods and apparatuses for diagnosing health state of three-dimensional printer
Publication Date: 2022.11.22 RES & BUSINESS FOUND SUNGKYUNKWAN UNIV
  • US11506574B2 patent drawing
  • US11506574B2 patent drawing
  • US11506574B2 patent drawing

AI summary

Some embodiments of the present invention intend to provide a method and an apparatus for diagnosing health state of a 3D printer which collects collection data in a 3D printing process by using sensors attached to the 3D printer (for example, an acceleration sensor and an acoustic emission sensor), extracts feature elements of the sensor data, applies machine learning to an equipment health state diagnosis model based on the extracted feature elements, and thereby enables diagnosing equipment health state of 3D printer components in an objective and consistent manner.