Remote Welding Approval Control for Weld Quality Assurance

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Solution Overview

Problem

Existing welding systems lack effective remote monitoring capabilities, which can lead to substandard weld quality due to inadequate real-time process control and quality assurance.

Innovation Solution

A remotely monitored welding system that includes a controller circuit, a human-machine interface, a test device, and a remote supervisor, which together prevent a welder from welding until tests are approved, ensuring quality metrics are met.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If welding is performed without remote monitoring and approval, then productivity is improved, but weld quality and reliability deteriorate

Engineering Contradiction:
Improvewelding speedVSAvoidweld quality
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary actions by requiring pre-weld tests and approvals before actual welding operations. The controller circuit stores approval indicators in memory that must be present before enabling the welder, ensuring quality assurance is completed in advance. This allows rapid welding once approved while maintaining quality standards through pre-validation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where test results from the test device are automatically communicated to the controller circuit, which then determines whether to grant approval for welding. The remote supervisor receives notifications and provides approval feedback, creating a closed-loop system that ensures weld quality while enabling efficient production.

Inventive Principle:
Principle #23Feedback

2Reliability

If remote monitoring and approval systems are implemented, then weld quality is improved, but device complexity increases

Engineering Contradiction:
Improveweld qualityVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The controller circuit serves multiple functions: it controls the welder operation, stores approval indicators in memory, receives test data from the test device, communicates with the remote supervisor, and manages the overall welding process. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing system complexity while maintaining comprehensive quality control.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses an intermediary communication network to connect the welding system components and the remote supervisor. This intermediary layer simplifies the overall system architecture by providing a standardized communication interface, reducing the complexity of direct point-to-point connections between all components.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If tests are required and approved before welding, then weld quality is improved, but productivity decreases

Engineering Contradiction:
Improveweld qualityVSAvoidproduction speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs quality assurance tests and obtains approvals in advance before production welding begins. Once the approval indicator is stored in memory, subsequent welding operations can proceed rapidly without repeated testing, as the approval covers a batch or series of welds. This preliminary validation approach ensures quality while minimizing delays during production.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements testing and approval for representative samples or critical parameters rather than every single weld. The controller circuit stores approval indicators that validate batches of welds, performing testing at an optimal frequency that ensures quality without requiring excessive testing of every individual component, thus balancing quality assurance with production efficiency.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentEP3666442B1Welding system and method
Publication Date: 2025.05.21 APTIV TECHNOLOGIES LTD
  • EP3666442B1 patent drawingFigure 1
  • EP3666442B1 patent drawingFigure 2
  • EP3666442B1 patent drawingFigure 3

AI summary

A welding system (10) includes a welder (12), a human-machine-interface (20), an identification-device (26), a test-device (32), a memory (38), and a controller-circuit (42). The welder (12) creates an assembly (14) between electrical-components (18). The human-machine-interface (20) receives an input (22) from an operator and displays instructions to the operator. The identification-device (26) creates a label (28) identifying the assembly (14). The test-device (32) produces test-data (34) of the weld-joint (16). The memory (38) stores welder-process-data (40) of the weld-joint (16). The controller-circuit (42) activates the welder (12), stores the welder-process-data (40) in the memory (38), determines whether the welder-process-data (40) violates a quality-metric (44), determines a number of violating-weld-joints (46), activates an alert-device (50) to alert the operator to violating-weld-joints (46), disables (48) the welder (12) when a number of violating-weld-joints (46) exceeds a threshold (52), activates the identification-device (26) to create the label (28), instructs the operator to attach the label (28) to the assembly (14) having the violating-weld-joints (46), instructs the operator to perform a test of the violating-weld-joints (46) with the test-device (32), and stores the test-data (34) of the violating-weld-joints (46) in the memory (38) linked to the identity (30).