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.