Mobile Terminal Testing With Reference-Position Power Checks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mobile terminal testing devices face inaccuracies due to reduced output power measurements caused by heat generation or battery depletion during long-term testing, leading to undesirable results that do not reflect the DUT's actual capabilities.
Innovation Solution
A mobile terminal testing device with a positioner and integrated control unit that measures output power at preset intervals, interrupting and excluding measurements if power falls below a threshold, and resuming from the excluded position to maintain accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous measurement is performed during long-term testing, then measurement coverage is improved, but measurement accuracy deteriorates due to heat generation and battery depletion causing reduced output power
Solution Approach 1:
The system performs preliminary detection of output power at each measurement position before conducting the actual measurement. By detecting whether the output power is within the normal range in advance, the system prevents inaccurate measurements caused by heat generation or battery depletion, thereby maintaining measurement accuracy throughout long-term testing.
Solution Approach 2:
The system continuously monitors output power during measurements and uses this feedback to determine whether to proceed with or exclude measurements at each position. When output power falls outside the normal range, the system excludes those measurements from the final results, ensuring that only accurate measurements contribute to the overall assessment.
2Measurement precision
If measurements are excluded when output power is reduced, then measurement accuracy is improved, but productivity deteriorates due to interrupted and repeated measurements
Solution Approach 1:
The system automatically detects output power levels and autonomously determines whether to exclude measurements without requiring manual intervention. This self-service capability maintains measurement accuracy while minimizing the impact on productivity by efficiently managing measurement inclusion/exclusion decisions.
Solution Approach 2:
The system discards measurements taken when output power is outside the normal range, but continues the measurement process by moving to subsequent positions. This selective discarding approach maintains accuracy by excluding only problematic measurements while preserving overall testing productivity through continued operation.
3Measurement precision
If output power is monitored at each measurement position, then measurement accuracy is improved, but device complexity increases due to additional monitoring and control mechanisms
Solution Approach 1:
The output power monitoring function serves multiple purposes: it detects normal operation status, identifies heat generation issues, and determines measurement validity. This multi-functionality allows a single monitoring mechanism to address multiple measurement quality concerns without proportionally increasing device complexity.
Solution Approach 2:
The system replaces complex mechanical intervention mechanisms with electronic monitoring and software-based measurement exclusion logic. By using electronic detection and computational decision-making instead of mechanical adjustments or manual interventions, the system maintains measurement accuracy while minimizing physical complexity.
Data Source
AI summary
There is provided a mobile terminal testing device that can improve the accuracy of measurement results. A reference position measurement control unit 18c that measures output power of a DUT 100 at a Reference position, which is any preset measurement position, each time a certain period of time elapses in a case where a total spherical scanning of the DUT 100 is performed, and that, in a case where the output power is equal to or less than a preset regulated Power, interrupts the measurement, excludes measurement data after the previous measurement at a Reference position from the measured value, and enables the measurement to be resumed from the excluded measurement position is provided.