Laser Power Monitoring With Safety Controller Cutoff
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laser installations lack effective safety measures to prevent excessive laser power from being transmitted to machining units, potentially causing safety risks for operators and equipment.
Innovation Solution
A safety controller communicatively connected to the laser and machining unit, which monitors and compares parameter values related to laser power with predetermined limit values, automatically switching off or blocking the laser light if the limit is exceeded, ensuring safe operation by preventing excessive power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser power is increased to improve machining efficiency, then productivity increases, but safety risks increase due to potential excessive power transmission
Solution Approach 1:
The patent implements a feedback mechanism where the safety controller continuously receives parameter values from the laser and machining unit, compares them with predetermined limit values, and automatically triggers shutdown or blocking actions when limits are exceeded. This closed-loop feedback system enables high laser power operation while maintaining safety through real-time monitoring and automatic correction.
2Reliability
If safety monitoring is added to prevent excessive laser power, then safety improves, but device complexity increases
Solution Approach 1:
The safety controller is designed as a multi-functional device that performs multiple tasks: receiving parameter values from multiple sources (laser and machining unit), comparing parameters against limit values, triggering shutdown sequences, and blocking laser light. By consolidating these safety functions into a single controller, the patent achieves comprehensive safety monitoring without proportionally increasing system complexity.
3Reliability
If automatic shutdown mechanism is implemented to block excessive laser power, then safety improves, but loss of time occurs during shutdown
Solution Approach 1:
The system performs preliminary actions by continuously monitoring parameter values and preparing shutdown sequences before actual safety violations occur. The safety controller maintains readiness to execute shutdown or blocking actions, and when limits are approached or exceeded, the pre-programmed automatic response minimizes reaction time. This preliminary preparation ensures that when shutdown is triggered, it occurs rapidly without delay.
Data Source
AI summary
A laser installation includes a laser, a laser machining unit, and a safety controller. The laser is configured to provide laser light to the laser machining unit. A laser power of the laser light is variable. The safety controller is communicatively connected to the laser and the laser machining unit. The laser and/or the laser machining unit is configured to transmit at least one parameter value relating to the laser power to the safety controller. The safety controller is configured to compare the at least one parameter value with a limit value, and turn off the laser or block the laser light upon determining that the at least one parameter value exceeds the limit value.