Test Assembly with Pressure Sensor Feedback for Detection Pin Protection
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Solution Overview
Problem
Existing test assemblies for display panels are prone to damage during testing due to excessive pressure, leading to inconsistent measurement accuracy and increased costs due to detection pin deformation.
Innovation Solution
A test assembly with detection pins connected to pressure sensors and a drive mechanism that applies a controlled driving force, stopping when a preset pressure value is reached to prevent damage and ensure consistent pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a drive mechanism applies driving force to the detection pin to press contact with the test key, then the detection accuracy is improved, but the detection pin is prone to deformation and damage due to excessive pressure
Solution Approach 1:
The patent introduces a pressure sensor that provides real-time feedback on the pressure applied to the detection pin. The control unit receives this feedback signal and adjusts the driving force accordingly, stopping the press contact when the preset pressure value is reached. This closed-loop feedback mechanism ensures accurate measurement while preventing excessive pressure that could damage the detection pin.
Solution Approach 2:
The patent changes the pressure parameter from an uncontrolled variable to a controlled variable with a preset maximum value. By setting and enforcing a pressure threshold, the system maintains optimal pressure for detection accuracy while preventing damage to the detection pin. This parameter control resolves the contradiction between needing sufficient pressure for accurate measurement and avoiding excessive pressure that causes damage.
2Ease of manufacture
If the detection pin is reused to save costs, then the manufacturing cost is reduced, but the pressure applied may be inconsistent leading to reduced measurement accuracy
Solution Approach 1:
The pressure sensor provides real-time feedback on the pressure applied during each test cycle. This feedback mechanism ensures that even when the detection pin is reused, the pressure remains consistent and within the optimal range for accurate measurement. The control unit uses this feedback to maintain precise control over the press contact process, eliminating variability that would otherwise affect measurement accuracy.
Solution Approach 2:
The system performs self-adjustment through the feedback loop, automatically maintaining the correct pressure level without requiring manual intervention or calibration for each reused detection pin. The control unit continuously monitors pressure via the sensor and adjusts the driving force to maintain consistency, enabling reliable reuse of detection pins while preserving measurement accuracy.
3Reliability
If the pressure sensor provides real-time feedback to stop the driving force, then the detection pin damage is prevented, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the pressure sensor continuously monitors the pressure on the detection pin and sends signals to the control unit. When the preset pressure value is reached, the control unit automatically stops the driving force. This feedback loop prevents detection pin damage while adding controlled complexity only where needed for protection and measurement accuracy.
Solution Approach 2:
The pressure sensor acts as an intermediary between the drive mechanism and the control unit, translating physical pressure into electrical signals that the control unit can process. This intermediary component enables automatic pressure control and protection without requiring complex direct sensing or manual intervention, resolving the contradiction between reliability and complexity by introducing a specialized intermediate element.
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 solution prevents detection pin deformation, allows for consistent pressure application, and improves the accuracy of test key characteristic detection, enabling reuse and cost savings.
Implementation Method 1
a pressure sensor, in connection with a respective detection pin, wherein the pressure sensor is configured to detect a pressure value as applied to the detection pin connected therewith
Data Source
AI summary
The present application provides a test assembly, including: a detection pin (11), a pressure sensor (12) connected to the detection pin (11), and a drive mechanism (18) configured to drive each detection pin (11), and each pressure sensor (12) is configured to detect the pressure applied to the detection pin (11) in real time.