Laser Processing Control With Weak-Light Intervention Response

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Solution Overview

Problem

Existing laser processing devices lack effective mechanisms to safely respond to interventions during processing, such as external actions or data reception, which can pose risks to users and equipment.

Innovation Solution

The method involves sensing interventions during laser processing and controlling the execution module to switch the laser output to a weak light output, reducing power to a level safe for human exposure, and optionally flickering the light to indicate a suspended state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the laser processing device operates at full laser power to maintain processing efficiency, then productivity is improved, but user safety deteriorates when interventions occur during processing

Engineering Contradiction:

Improvelaser processing efficiencyVSAvoiduser safety risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The laser output power is made dynamically adjustable based on operational conditions. The execution module switches between full laser power during normal processing and weak light output when intervention is detected, allowing the system to adapt its power level to current safety requirements while maintaining processing efficiency during normal operation

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A weak light output mode is introduced as an intermediary state between full laser power and complete shutdown. This intermediate state maintains visibility and allows safe intervention while preventing harmful effects, serving as a mediator that balances productivity and safety requirements

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the laser processing device immediately shuts down upon intervention detection to ensure safety, then user safety is improved, but productivity deteriorates due to processing interruption

Engineering Contradiction:

Improveuser safetyVSAvoidprocessing continuity

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

Instead of completely shutting down the laser, the system applies partial action by reducing power to weak light output level. This partial output is sufficient to maintain visibility and allow safe operation during intervention while avoiding the excessive action of complete shutdown that would interrupt processing

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The laser power parameter is changed from full power to weak light output level when intervention is detected. This parameter change maintains the laser's visibility function while eliminating harmful effects, allowing processing to continue safely after intervention removal

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If the laser processing device provides clear visual indication of suspended state to improve operator awareness, then ease of operation is improved, but energy consumption increases due to continuous weak light output

Engineering Contradiction:

Improveoperator awarenessVSAvoidenergy consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The weak light output can be implemented with periodic flickering pattern instead of continuous emission. This periodic action provides clear visual indication to operators about the suspended state while reducing overall energy consumption compared to continuous weak light output

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20250065445A1Method for controlling laser processing device, device, and computer program medium

Publication Date: 2025.02.27 MAKEBLOCK CO LTD

AI summary

A method for controlling a laser processing device, a device, and a computer program medium are provided. The laser processing device is equipped with an execution module to execute laser processing. The method includes the following. An intervention is sensed during the laser processing performed by the laser processing device. The execution module is controlled to switch a laser output to a weak light output in response to the intervention, where a power of a weak light is less than a reference laser power of the laser processing.