Configurable Automatic Test Infrastructure for RF Filter Adjustment
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Solution Overview
Problem
Current RF filter adjustment methods require human intervention, additional apparatus, and complex assembly processes, which can lead to deformation of small screw jaws and are inefficient for filters in multiple planes, resulting in increased labor and material costs.
Innovation Solution
A configurable automatic test infrastructure using a robot arm with a linear guideway and image scanner to automatically rotate screws without additional apparatus, determining screw angles and transmitting rotational motion through a tip fitting into slots, allowing for precise characterization without human intervention and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a robot arm is used to adjust small straight jaws (smaller than M3 size), then automation is improved, but the screw jaw structure is distorted during adjustment
Solution Approach 1:
A tip is introduced as an intermediary component between the robot arm and the screw jaw. The tip fits into the slot of the adjusting screw and transmits rotational motion without directly gripping the small straight jaw, thereby avoiding distortion of the screw structure while enabling automated adjustment
Solution Approach 2:
The direct mechanical gripping system is replaced with an optical detection system (image scanner with light curtain) that detects screw positions and angles non-contactually, eliminating mechanical stress on the small straight jaws during the adjustment process
2Manufacturing precision
If additional apparatus is used to protect small screw jaws from distortion, then manufacturing precision is improved, but device complexity and labor cost increase
Solution Approach 1:
The tip serves multiple functions: it acts as a protective intermediary for small straight jaws, a universal interface for the robot arm to apply torque, and a positioning element that works with the slot structure of the screws. This multi-functionality eliminates the need for separate protective apparatus for different screw sizes
Solution Approach 2:
The slot structure of the adjusting screw itself provides the interface for the tip, eliminating the need for external protective apparatus. The screw's own geometry (the slot) serves the dual purpose of allowing rotational actuation while protecting the small straight jaw from direct mechanical stress
3Adaptability or versatility
If traditional adjustment methods are used for filters in 3 planes, then adaptability is improved, but assembly time and labor cost increase
Solution Approach 1:
The robot arm with the tip creates a universal adjustment system that can work on screws in any orientation or plane. The system adapts to filters in 3 planes without requiring separate apparatus assemblies, as the robot arm can position and orient the tip to match any screw configuration
Solution Approach 2:
Complex mechanical apparatus for multi-plane adjustment is replaced with a programmable robot arm that uses optical detection to locate and adjust screws in any plane. The system software coordinates the robot arm's movements to handle filters in multiple orientations without physical reconfiguration
4Measurement precision
If human operators perform characterization adjustment, then measurement precision is improved, but productivity is reduced due to time-consuming manual processes
Solution Approach 1:
The system uses optical feedback from the image scanner to detect screw positions and angles, and uses measurement feedback from RF connectors to verify filter characterization. This closed-loop feedback system maintains measurement precision while enabling automated high-speed adjustment
Solution Approach 2:
Manual measurement and adjustment operations are replaced with automated optical detection and robotic actuation systems. The image scanner captures screw positions, the robot arm executes precise rotational adjustments, and RF measurements verify characterization, all without human intervention, thereby increasing productivity while maintaining precision
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
Enables fully automated RF filter characterization without human intervention, reducing labor and material costs, and ensuring precise operation on filters with small or multi-planar screws, eliminating deformation risks and simplifying the adjustment process.
Implementation Method 1
an image scanner (6) comprising a light curtain (7)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention is related to a configurable automatic test infrastructure which enables performing characterization adjustment without requiring preliminary processes of the filters (A) by means of the sub-assembly assembly apparatus (4).