Laser Modulation Frequency Adjustment Without Measurement Interference
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Solution Overview
Problem
Adjusting a laser system during a measurement process can cause signal interference, particularly when the measuring machine and laser control share the same system clock, affecting measurement accuracy.
Innovation Solution
Implement a method that blocks laser measurements during a specified time window and adjusts the modulation frequency within this window, using a measuring controller to readjust parameters like laser power and temperature, ensuring consistent control signals before and after measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the laser system is adjusted during the measurement process, then the measurement accuracy can be maintained or improved, but signal interference occurs affecting measurement accuracy
Solution Approach 1:
The patent applies preliminary action by performing the laser system adjustment before the measurement process begins. The adjusting controller receives adjusting information and adjusts at least one parameter of the laser system in advance, ensuring the laser is properly calibrated before measurements start, thereby avoiding signal interference during actual measurement while maintaining measurement accuracy.
2Object-affected harmful factors
If the measurement is blocked during the time window for adjustment, then signal interference is prevented, but measurement time is lost
Solution Approach 1:
The patent applies dynamics by making the measurement blocking dynamic and selective rather than continuous. The controller blocks measurements only during specific time windows when adjustment occurs, and allows measurements to proceed during other periods. This dynamic approach minimizes measurement time loss while effectively preventing signal interference during critical adjustment moments.
3Adaptability or versatility
If the modulation frequency is changed during measurement, then the laser system can adapt to different measurement conditions, but disturbances to the measurement occur
Solution Approach 1:
The patent applies preliminary action by completing all modulation frequency changes and system adjustments before the measurement process starts. The adjusting controller configures the appropriate modulation frequency based on measurement requirements in advance, then locks the settings during measurement to ensure stability and prevent disturbances.
Solution Approach 2:
The patent applies periodic action by establishing regular intervals for measurement blocking that coincide with modulation frequency changes. The controller periodically blocks measurements during defined time windows when frequency transitions occur, allowing the system to adapt frequencies periodically while maintaining measurement stability during active measurement phases.
Data Source
Figure 1~2
AI summary
The invention relates to a method (100) for adjusting a laser system (1), comprising the following steps: - specifying (101) a time window in which a change in the modulation frequency of the laser system (1) is performed, - blocking (102) a measurement by the laser system (1) in the specified time window, - performing (103) the adjustment of the laser system (1) in the specified time window, wherein a digital-to-analog converter (5) of the laser system is provided to enable precise control of analog signals of the laser system. The invention further relates to a computer program, a device, and a storage medium for this purpose.