Solution Discharge Inspection Using Dynamic Deposit Standards
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Solution Overview
Problem
The challenge of accurately inspecting the landing accuracy of a solution discharge device is exacerbated by the rapid drying of solution deposits, which complicates the identification of main drops and prolongs the inspection process, especially with a large number of discharge outlets.
Innovation Solution
The method involves dividing the inspection area into multiple imaging areas, each imaged at different times, and setting dynamic upper and lower bounds for the deposit surface area standard based on imaging time, allowing for precise identification of main drops without relying on pattern matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If imaging is performed after the solution has completely dried to ensure accurate main drop identification, then measurement precision is improved, but inspection time increases significantly
Solution Approach 1:
The patent applies preliminary action by performing imaging at multiple time points during the drying process rather than waiting for complete drying. By capturing images at intermediate stages (e.g., 50% and 80% drying), the system proactively identifies main drops before the solution fully dries, thereby reducing inspection time while maintaining identification accuracy through dynamic threshold adjustment.
Solution Approach 2:
The patent implements dynamics by making the deposit surface area standard dynamic rather than fixed. The upper and lower bound values of the standard are adjusted based on the imaging time and drying progress. As the solution dries and the deposit surface area decreases, the standard values are相应ly reduced, allowing accurate main drop identification at different stages of the drying process without requiring complete drying.
2Device complexity
If the deposit surface area standard is fixed regardless of imaging time, then the inspection process is simple, but measurement precision deteriorates due to solution drying
Solution Approach 1:
The patent applies dynamics by transforming the fixed deposit surface area standard into a dynamic one that adapts to the drying process. The standard's upper and lower bound values are adjusted according to the elapsed time since solution discharge and the corresponding drying degree. This dynamic adjustment maintains measurement precision throughout the drying process without requiring complex manual intervention, as the system automatically modifies the standard based on timing information.
Solution Approach 2:
The patent implements parameter changes by modifying the deposit surface area standard parameters (upper and lower bounds) as a function of imaging time. As time progresses and the solution dries, the standard parameters are systematically changed to reflect the decreasing deposit surface area. This approach maintains inspection precision while keeping the process automated and relatively simple, avoiding the need for complex real-time image analysis or manual calibration.
3Productivity
If imaging areas are divided and imaged at different times to reduce inspection time, then productivity is improved, but measurement precision may deteriorate due to varying drying states
Solution Approach 1:
The patent applies segmentation by dividing the inspection area into multiple imaging areas that are imaged at different time points. This allows the inspection process to proceed in parallel across different regions, reducing overall inspection time. Each segmented area is evaluated with its own timing information, enabling the dynamic standard to be applied appropriately to each segment's drying state.
Solution Approach 2:
The patent implements local quality by applying the dynamic deposit surface area standard locally to each imaging area based on its specific imaging time and drying state. Each segmented region is evaluated with a standard that is tailored to its local conditions (timing and position), ensuring measurement precision is maintained despite the varying drying states across different areas. This localized adaptation of the standard preserves accuracy while enabling parallel processing.
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
This approach enables high-precision landing accuracy inspection within a shorter time frame, reducing errors and increasing productivity by accounting for the reduction in deposit surface area due to drying.
Implementation Method 1
the solution is constantly drying after landing on the inspection area, and an effect of drying is that the deposit surface area decreases over time as the solution volume decreases
Data Source
AI summary
A inspection method for a solution discharge device includes a discharge step, a imaging step, an acquisition step, and a judgement step of identifying a main drop among deposits found to have a deposit surface area falling within a deposit surface area standard for each imaging area. An upper bound and a lower bound of the deposit surface area standard are determined according to timing of imaging in the imaging step, such that the values applied to deposits in an imaging area imaged at a second imaging time that is later than a first imaging time are smaller than those applied to deposits in an imaging area imaged at the first imaging time.