Laser Mirror Housing Overheat Detection With Infrared Sensors
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Solution Overview
Problem
Existing laser processing systems lack effective mechanisms for detecting overheating and ensuring safe operation, particularly in components like the mirror housing, which can lead to melting and potential safety hazards.
Innovation Solution
Incorporation of infrared sensors within the laser processing system to detect specific wavelengths of infrared light indicative of overheating, coupled with a control mechanism to stop laser irradiation when such light is detected, ensuring safety and preventing component damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser beam irradiation is performed on the workpiece, then processing productivity is improved, but the risk of overheating and melting of internal components (mirror housing) increases
Solution Approach 1:
The patent positions infrared sensors inside the housing to detect overheating conditions before they cause damage. The sensors monitor thermal radiation from the mirror housing and trigger warnings or shutdowns proactively, preventing melting before it occurs. This preliminary detection mechanism allows the system to maintain high productivity while preventing catastrophic failures.
Solution Approach 2:
The infrared sensors act as intermediaries between the laser beam energy and the control system. They detect thermal radiation from the mirror housing and convert it into electrical signals that trigger safety responses. This intermediary mechanism enables indirect monitoring of internal component temperatures without direct contact, allowing continuous safe operation at high power levels.
2Reliability
If infrared sensors are positioned inside the housing to detect overheating, then safety and reliability are improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical temperature measurement systems with optical infrared sensing. Instead of using thermocouples or thermal contact sensors that would require direct contact with hot components, the system uses infrared sensors to detect thermal radiation remotely. This substitution simplifies the overall system architecture while maintaining reliable overheating detection capability.
Solution Approach 2:
The infrared sensors serve multiple functions: they monitor the mirror housing temperature, detect abnormal heating conditions, and provide data for both warning and shutdown decisions. This multi-functionality reduces the need for separate sensing systems and simplifies the overall detection architecture while enhancing safety capabilities.
3Measurement precision
If multiple infrared sensors are deployed around the box to monitor different surfaces, then measurement precision is improved, but the device complexity and cost increase
Solution Approach 1:
The patent strategically positions infrared sensors to monitor specific critical surfaces of the mirror housing where overheating is most likely to occur. Rather than uniformly distributing sensors across all surfaces, the system places sensors at locations with highest thermal risk, optimizing detection precision where it matters most while minimizing the total number of sensors required.
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
The system effectively prevents overheating by stopping laser irradiation before critical temperatures are reached, enhancing safety and reliability by continuously monitoring and diagnosing sensor failures.
Implementation Method 1
at least one infrared sensor positioned inside the housing and around the box... determining whether or not the at least one infrared sensor has detected first infrared light of a specific wavelength
Data Source
AI summary
A laser processing system includes an irradiation device that irradiates a laser beam to a workpiece and includes a housing, a box positioned inside the housing and housing at least a part of a path of the laser beam, and at least one infrared sensor positioned inside the housing and around the box.