Inspection Device Electrical Measurement Accuracy
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Solution Overview
Problem
Existing inspection devices for measuring electrical characteristics of components on circuit boards face challenges in achieving accurate measurements due to external influences from the holding table, which can affect the component's electrical properties.
Innovation Solution
The inspection device employs a holding table and a pair of measuring elements that grip the component, allowing for relative movement to measure electrical characteristics while the component is separated from the table, thereby minimizing external influences and enhancing measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the component is measured while held on the holding table, then the measurement process is simple, but the holding table affects the electrical characteristics measurement accuracy
Solution Approach 1:
The component is extracted from the holding table environment during the measurement process. The ejection mechanism removes the component from the holding table before measurement, eliminating the interfering electrical influence of the holding table on the measurement accuracy.
Solution Approach 2:
The measurement process is segmented into distinct phases: ejection from holding table, measurement in isolation, and then return to holding table. This segmentation allows the component to be measured in a controlled environment free from holding table interference.
2Measurement precision
If the component is separated from the holding table for measurement, then measurement accuracy improves, but the device complexity increases
Solution Approach 1:
The relative movement device serves multiple functions: it ejects the component from the holding table, positions the component for measurement, and returns the component to the holding table after measurement. This multi-functionality reduces the need for separate mechanisms for each operation.
Solution Approach 2:
The ejection mechanism and measurement positioning system are merged into a single integrated relative movement device. This consolidation reduces overall system complexity while achieving the desired measurement accuracy through component separation.
Data Source
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AI summary
An inspection device with improved inspection accuracy of electrical characteristics of a component. The inspection device includes holding table 32, pair of measuring elements 34 and 36 configured to grip a component s held on holding table 32 and measure electrical characteristics of the component; and a relative movement device configured to relatively move holding table 32 and the pair of measuring elements 34 and 36. In a state (b) in which component s is clamped by the pair of measuring elements 34 and 36, by moving holding table 32, component s and holding table 32 are separated by at least a set value, and in that state (c) the electrical characteristics are measured. Therefore, even if the holding table 32 is made of a conductive material, effects on the component s are reduced, and the electrical characteristics can be measured accurately.