Amplitude Probability Distribution Mask for EMI Evaluation
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Solution Overview
Problem
Current methods for evaluating electromagnetic radio interference in communication systems are inefficient, particularly when dealing with varying interference patterns and multiple modulation methods, leading to low evaluation accuracy and lengthy data input processes.
Innovation Solution
An electromagnetic radio interference measurement device that converts designated communication performance values into amplitude probability distribution masks, calculates and compares these masks with measured interference data, and outputs mapping results to identify interference sources, enabling immediate evaluation of interference impact on communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If amplitude probability distribution measurement is used to evaluate radio interference variation over time, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the measurement system into distinct functional modules: a measurement unit that captures radio interference signals, a calculation unit that computes amplitude probability distribution, and a comparison unit that evaluates results against thresholds. This segmentation allows each module to perform its specific function independently, improving measurement precision while managing system complexity through modular design.
Solution Approach 2:
The patent pre-calculates and stores amplitude probability distribution values for various radio interference levels before actual measurement. During measurement, the system simply compares captured signals against these pre-computed reference values, eliminating the need for real-time complex calculations and reducing device complexity while maintaining high measurement precision.
2Measurement precision
If comprehensive measurement data is collected to accurately evaluate electromagnetic interference, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary calculations of amplitude probability distribution values and stores them in a database before actual measurement operations. When measuring electromagnetic interference, the system retrieves pre-computed reference values and performs simple comparisons, significantly reducing evaluation time while maintaining comprehensive measurement precision through the use of pre-analyzed data.
Solution Approach 2:
The patent creates simplified reference models (copies) of expected radio interference patterns and their corresponding amplitude probability distributions. During measurement, the system compares actual signals against these reference copies rather than performing full analytical calculations, enabling rapid evaluation while preserving measurement accuracy through the use of validated reference data.
3Adaptability or versatility
If multiple communication performance values are evaluated to assess interference impact, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal measurement framework that can evaluate multiple communication performance values (bit error rate, data transmission rate, communication quality) using the same core amplitude probability distribution calculation mechanism. The system adapts to different communication standards and performance metrics through configurable parameters rather than requiring separate measurement systems for each metric, thereby improving adaptability while controlling device complexity.
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 device allows for accurate and timely identification of interference sources, reducing the time and effort required for evaluation and enabling effective EMI measures, even in complex communication environments with multiple modulation methods.
Implementation Method 1
measuring means for measuring an electromagnetic near-field distributed in a space surrounding the measurement object
Data Source
AI summary
A device that measures an electromagnetic near-field emitted from a measurement object and evaluates electromagnetic interference, the device including mask setting unit that converts a predetermined communication performance value into an amplitude probability distribution mask and setting a converted amplitude probability distribution mask as a permissible level; acquisition unit that acquires time-series measurement data of electromagnetic radio interference in connection with a measurement position coordinate; amplitude probability distribution calculation unit that calculates an amplitude probability distribution of the electromagnetic radio interference for each measurement position coordinate based on the time-series measurement data; determination unit that determines a magnitude relation between the amplitude probability distribution mask and the amplitude probability distribution for each measurement position coordinate and outputting as a determination result; and mapping process unit that acquires a mapping result in which the determination result is reflected in a space corresponding to the measurement object.