Test Apparatus Controller for Consistent Measurement Accuracy
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Solution Overview
Problem
In network-type test apparatuses, measuring semiconductor lasers, it is challenging to achieve high accuracy due to the use of multiple measuring sections with different functions, leading to inconsistent measurement results when the same item is measured multiple times.
Innovation Solution
A test apparatus with a controller that directs a switch section to connect the test target section to a specific measuring section based on stored information, ensuring that the same measuring section is used for repeated measurements, thereby minimizing individual device differences and enhancing measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple measuring sections are used to measure different test target sections, then the operation efficiency of the measuring sections is improved, but the measurement accuracy deteriorates due to device variations between different measuring sections
Solution Approach 1:
The system performs preliminary actions by storing the correspondence between test target sections and measuring sections in advance. When a measurement is requested, the controller retrieves this stored information to determine which measuring section should be used, ensuring consistency before the actual measurement occurs. This preliminary recording of pairing information enables the system to maintain measurement accuracy while managing multiple test targets efficiently.
2Measurement precision
If the same measuring section is used for repeated measurements of one test target section, then the measurement accuracy is improved, but the operation efficiency deteriorates due to reduced utilization of other measuring sections
Solution Approach 1:
The controller is designed with multi-functionality to manage both measurement accuracy and resource utilization. It universally handles multiple tasks: retrieving stored pairing information to ensure accurate measurements, identifying available measuring sections, and dynamically assigning test targets to appropriate measuring sections. This universal control mechanism resolves the contradiction between maintaining consistent measuring section usage and optimizing overall system efficiency.
Solution Approach 2:
The system dynamically adjusts measuring section assignment based on real-time availability. While the stored correspondence provides a baseline for accurate measurements, the controller dynamically identifies which measuring sections are currently available and reassigns test targets accordingly. This dynamic adaptation allows the system to maintain measurement accuracy through consistent pairing while optimizing operation efficiency by utilizing all available measuring sections.
Data Source
AI summary
Disclosed is a test apparatus including: test target sections each having a connector to connect a Device Under the Test (DUT); measuring sections that include measuring devices that have same measuring item respectively; a switch section that switches connection between the test target section and the measuring section under direction of a controller; wherein the controller selects one of the algorithms of connection, 1) searching vacancy of the measuring sections and directs the switch section to make a path between the test target section and the measuring section of vacancy, 2) holding the path that former selected.