Electronic Component Test Handling With Switched DUT Temperature Control
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Solution Overview
Problem
In electronic component testing, devices that rapidly self-heat pose a challenge as their temperature control deviates significantly from set values due to rapid temperature changes, making it difficult to maintain a stable temperature.
Innovation Solution
An electronic component handling apparatus with a temperature adjuster, calculator, and controller that employs first and second temperature controls, where the second control involves forced cooling or heating based on a calculated temperature profile to manage rapid temperature changes, switching from first to second control after a predetermined time based on measured data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If real-time temperature control based on DUT temperature signal is used, then temperature control responsiveness is improved, but temperature stability deteriorates due to rapid temperature changes causing large deviations from set values
Solution Approach 1:
The system performs preliminary action by predicting future temperature changes based on the temperature profile obtained during the test. The temperature controller uses this predicted profile to proactively adjust temperature control actions before rapid temperature changes occur, preventing large deviations from the set value rather than merely reacting to temperature changes after they happen.
Solution Approach 2:
The system implements feedback by continuously monitoring the actual temperature during testing and comparing it with the predicted temperature profile. This feedback loop allows the temperature controller to adjust control parameters in real-time based on the difference between actual and predicted temperatures, maintaining both responsiveness and stability.
2Stability of the object's composition
If forced cooling or heating is applied to manage rapid temperature changes, then temperature stability is improved, but device complexity increases due to switching between multiple temperature control modes
Solution Approach 1:
The system applies dynamics by making the temperature control system adaptable and adjustable. The temperature controller dynamically switches between normal temperature control and forced cooling/heating modes based on real-time temperature monitoring and predicted profile comparison. This dynamic adjustment allows the system to maintain stability during rapid temperature changes while returning to normal operation when conditions permit, avoiding permanent complexity increases.
Solution Approach 2:
The system changes control parameters dynamically by adjusting the intensity and type of temperature control (normal vs. forced cooling/heating) based on the DUT's thermal state. The controller modifies control parameters such as cooling/heating rate and duration according to the predicted temperature profile and actual temperature measurements, enabling effective temperature management without requiring permanently complex control mechanisms.
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 effectively maintains the DUT temperature within an appropriate range even during rapid self-heating, preventing temperature overshoots and undershoots, ensuring accurate temperature control.
Implementation Method 1
a temperature detection circuit and pressing the DUT against a socket electrically connected to a tester testing the DUT
Implementation Method 2
a temperature adjuster adjusting a temperature of the DUT
Implementation Method 3
This temperature controller controls cooling means and heating means so that the DUT temperature is kept at a desired set value
Data Source
AI summary
An electronic component handling apparatus for handling a DUT and pressing the DUT against a socket electrically connected to a tester, including: a temperature adjuster adjusting a temperature of the DUT; a first calculator calculating the temperature of the DUT on the basis of a detection result of a temperature detection circuit disposed in the DUT; a temperature controller controlling the temperature adjuster; and a first controller outputting a first signal to the temperature controller. A temperature control includes a first temperature control based on the temperature of the DUT calculated by the first calculator and a second temperature control, and when the first signal is input from the first controller to the temperature controller after the temperature controller starts the first temperature control, the temperature controller switches the temperature control from the first temperature control to the second temperature control.