Variable Frequency Grid Histogram for Spectral Measurement
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Solution Overview
Problem
Conventional spectrum analyzers face challenges in accurately and visually organizing histogram displays due to fixed frequency grid-points, leading to display errors and unnatural impressions, especially in background noise, and fail to trigger frequency occurrences effectively.
Innovation Solution
A measuring device with a signal-processing unit and a histogram-generating unit that varies frequency grid-points through interpolation or multiplication, allowing for more accurate and visually organized histogram displays by displacing frequency positions, thereby improving the representation of constant signals in the frequency domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed frequency grid-points are used in histogram display, then the display structure is simple, but measurement precision deteriorates due to display errors and unnatural impressions in background noise
Solution Approach 1:
The patent applies dynamics by making the frequency grid-points variable rather than fixed. The grid-point variation unit dynamically adjusts the position of frequency grid-points across different spectra, allowing them to shift by a predetermined amount. This dynamic adjustment resolves the contradiction by maintaining simple display structure while improving measurement precision through adaptive grid-point positioning that better captures actual frequency occurrences.
Solution Approach 2:
The patent changes the parameter of frequency grid-point position from fixed to variable. By introducing a grid-point variation unit that shifts grid-point positions by a predetermined amount across spectra, the system transforms static parameters into dynamic ones. This parameter change enables more accurate frequency occurrence detection while preserving display simplicity.
2Ease of manufacture
If conventional histogram methods are used, then the implementation is straightforward, but reliability deteriorates due to inability to trigger on frequency occurrences and systematic amplitude errors
Solution Approach 1:
The patent introduces dynamic grid-point variation that adapts to actual frequency occurrences. By shifting grid-point positions across different spectra, the system can dynamically align with frequency peaks, enabling reliable triggering on frequency occurrences while maintaining straightforward implementation through the simple grid-point shift mechanism.
Solution Approach 2:
The grid-point variation unit implements a feedback mechanism where the position of frequency grid-points is adjusted based on predetermined variation amounts across spectra. This feedback approach improves reliability by enabling the system to adapt to frequency occurrences and eliminate systematic amplitude errors, while the predetermined variation amounts keep the implementation simple.
3Measurement precision
If points-method is used for histogram display, then the frequency grid-points correspond directly to x-values, but ease of operation deteriorates due to unconnected point clusters that are difficult to read
Solution Approach 1:
The patent applies dynamics by varying the frequency grid-point positions across different spectra through a predetermined amount. This dynamic variation causes frequency components to appear at different horizontal positions in the histogram display, transforming unconnected point clusters into continuous curves that are much easier to read while preserving accurate frequency-amplitude value pairing.
Solution Approach 2:
The patent transforms the display from discrete points into continuous curves through grid-point variation. By shifting grid-point positions across spectra, the histogram display creates curved patterns that connect frequency occurrences, improving readability while maintaining measurement precision through the systematic variation approach.
Data Source
AI summary
A measuring device includes a signal-processing unit for the registration of a first signal in the time domain and a histogram-generating unit for the indirect generation of a histogram in the frequency domain from the first signal. The histogram-generating unit provides a frequency grid-point variation unit.