Frequency Analysis TRIZ Cases

Quadrature-based DC bus harmonic detection cuts sampling and calculation load while extracting phase and voltage amplitude for grid imbalance monitoring.

Counts oscillator cycles between CAN frame signals to trim bit timing, enabling reliable synchronization with lower-cost oscillators.

Programmable resistor and supply-voltage tuning helps overtone crystal oscillators start reliably at the target mode while limiting current drain.

Phase-shifted test signals and binary search tune filter frequency quickly while avoiding PLL, VCO, and added circuit complexity.

Multiple phase-shifted reference samples and correlation deliver a precise, linear indication of input-to-reference frequency difference.

An immersed coil in an oscillation circuit tracks frequency shifts to detect magnetic oil degradation substances before wear causes damage.

Automatic RBW and VBW selection based on signal level cuts manual setup time while preserving accurate spectrum measurements.

RF pulse-per-second timing lets electric meters detect sampling drift and align measurements to a common frequency for better network analysis.

A quantum sensor measures the RF spectrum and adapts filtering to suppress strong interferers while preserving weak-signal analysis.

Electronic switching across segmented filter groups preserves adjacent band overlap, speeds measurement, and avoids mechanical wear.

High-frequency AC noise is compared at peak and zero-cross phases to separate discharge events from load noise and reduce false detection.

Two frequency-shifting optical cavities map broadband spectral information into time for real-time analysis above 20 GHz.

Switchable highpass and lowpass filters let one analyzer cover multiple bandwidths while suppressing image signals.

Non-intrusive monitoring uses plug-in voltage sensors and deep neural networks to identify device types and operating states without electrician-installed instrumentation.

Stored cable-model pulse-response curves help locate partial discharges despite signal attenuation and dispersion.

Two frequency-shifting optical cavities combine coherent detection and low-pass processing for wideband, high-resolution spectral analysis.

Band-pass filtering, amplitude regulation, and envelope extraction isolate weak harmonics across bands for equipment health assessment.

A sensing system uses a controller to adjust frequency bands and construct eigenvalue correspondences for multi-point sensors.

Dynamic bandwidth channels adapt to signal spectral characteristics, resolving the trade-off between measurement precision and processor complexity.

Dual mixing lines with distinct local oscillators separate input signal spectrums through frequency displacement and combination.

A miniature nonlinear transmission line spectrum analyzer generates ultra-wideband signals using FPGA algorithms.

A calibrated transfer rate accelerates configuration data movement to volatile memory during power-up.

Detecting encoder magnet misalignment through automated calibration routines that adjust motor commutation parameters.

Quadri-correlators with programmable delay control generate composite spectral responses that maximize signal-to-noise ratio while reducing device complexity.

Multiple low-pass filters with distinct time constants filter sensor signals, enabling adaptive thresholds that compensate for drift and environmental noise.

Parallel sub-band analysis reduces measurement time and improves peak detection accuracy compared to sequential scanning.

Overlapping windows and coherent accumulation create continuous spectrograms that reconstruct original signals while mitigating background noise.

A detection unit compares reflected waveforms against a reference database to identify circuit faults in pulse heaters.

A method interpolates eddy current inspection data using a reference set acquired at multiple frequencies to synthesize nondestructive examination results.

A method evaluates device noise sources by comparing malfunction frequency characteristics with internal noise arrival data.

Cascaded integrator comb filters decimate digital samples in swept analyzers, cutting sweep time by 4096 times versus FFT hardware.

A signal analysis apparatus subtracts analog-to-digital converter noise levels from the total measured noise floor to expand dynamic range.

Segmenting the phantom into distinct dielectric layers reduces electromagnetic loss, enabling accurate dosimetry measurements above 6 GHz.

A blood analyzer detects platelet aggregation in the flow cell to alert operators of potential measurement unit abnormalities before test delays occur.

A detector circuit extracts DC and AC signal components to calculate frequency crossings for power supply monitoring.

A sensor sampling system generates delta data sets by phase-aligning quasi-periodic signal waveforms to minimize wireless transmission volume.

Controllable admittance networks orthogonally correct gain and phase mismatches to achieve 65 dB image rejection without complex fixed calibration circuits.

Converting RF time-series data into spectrograms enables precise localization of signal start times and frequencies without excessive computational overhead.

Random time delays form 4D array manifold vectors, enabling accurate angle-of-arrival determination without channelization errors.

A signal analyzer produces frequency domain data at different time and frequency resolutions by selecting specific frames on a spectrogram.

Parallel sampling channels process broadband signals at optimized frequencies, reducing spectral aliasing and ambiguity in frequency determination.

A compact apparatus integrates small and wide bandwidth measurement paths into a single unit for simultaneous radio frequency power detection.

Mathematical models map feature sensor data onto target signals, eliminating physical sensors in constrained spaces.

Frequency analysis of circulating currents between parallel winding branches identifies faults without complex internal sensor integration.

A cavity resonator generates unique electromagnetic signatures for integrated circuits to enable precise identification.

A difference frequency detection system measures object range using delayed and undelayed signals.