Diagnostic Signal Processing TRIZ Cases

See how electrocardiographic electrodes passively identify users and load personalized coffee p

Tracks and holds a sub-current to cancel ambient light in PPG signals, improving heart rate and blood oxygen measurement accuracy.

Integrated seat sensors track heart rate, breathing, and HRV to detect drowsiness or stress and trigger adaptive countermeasures.

Marker-based delta compression cuts ventilator respiratory flow storage needs while preserving reversible data accuracy for medical use.

Offset measurement and correction keep wearable ECG electrode voltages within range, improving signal stability despite contact impedance changes.

Measuring LED voltage at multiple currents estimates temperature and corrects wavelength-related errors in blood oxygen saturation readings.

Detects abnormal glucose sensor signal changes, identifies likely faults, and compensates data to keep analyte readings reliable.

Additional navigator echoes flag motion-ridden MRI shots, and deep learning reconstruction restores missing k-space for cleaner images.

Identifier tagging separates signals processed before and after AFE parameter updates, reducing PPG measurement errors from update delay.

Parameter update tagging keeps the analog front end and MCU aligned in PPG processing, reducing digital restoration errors and measurement drift.

An auricle earring combines multi-wavelength PPG, pressure adjustment, and model-based signal fusion to sustain accurate long-term monitoring.

Serially connected position and pressure coils cut catheter lead count while preserving sensing accuracy and detecting magnetic interference.

Light emitters and sensor arrays separate pulsatile signals to locate vessel edges and size in real time without contrast agents.

A CMOS potentiostat with a low-noise TIA improves linear glucose current sensing while keeping power low for chip-integrated ENFM sensors.

Normalized pulse wave systolic upstroke analysis separates obstructive and central sleep apnea while reducing vascular tone and motion effects.

AI analyzes finger perfusion index signals during oximetry to flag arrhythmia and atrial fibrillation without prolonged wear.

A segmented sensor and insertion sharp simplify skin placement, reducing pain while maintaining secure anchoring for glucose monitoring.

A tray-and-bag package preserves sterility while allowing button activation and wireless pairing before loading the sensing device into an insertion tool.

A transcutaneous glucose sensor uses on-body electronics for continuous monitoring and calibration without external finger-prick reference.

Past sensitivity storage and reference-range checks improve implantable sensor calibration when sensor drift or reference biometric errors occur.

Uses red and infrared signal ratios to correct pulse oximeter SpO2 errors caused by tissue scattering, absorption, and skin pigmentation.

Multiple validated PPG and reference blood pressure readings calibrate the algorithm to improve cuffless measurement accuracy.

Adaptive sampling raises vital-sign data rates only during alerts, cutting false alarms while keeping continuous wireless monitoring unobtrusive.

Processing circuitry selects electrode pairs by signal propagation alignment, speeding electro-anatomical mapping and reducing manual error.

Forehead and wrist temperature correlation lets a wearable reduce repeated forehead scans while maintaining body temperature accuracy.

Dual ear-canal sensors and a heat balance equation compensate for limited view and ambient changes to estimate core body temperature accurately.

Separating optical filtering, current-to-voltage conversion, and amplification improves physiological signal accuracy under ambient light.

Biometric sensors built into a remote control enable home health checks with local alerts or off-site reporting through consumer appliances.

Real-time EEG, fMRI, and EOG neurofeedback targets error-related negativity to reduce anxiety and expand access beyond in-person care.

Separating respiratory motion from body movement enables non-invasive QOL monitoring for sleep, stress, and pain assessment in daily life.

Automatic mode switching cuts calibration and confirmation burden in continuous glucose monitoring while preserving reliable detection of critical glycemic events.

Band-pass filtering of piezoelectric cuff signals isolates Korotkoff sounds and correlates them with bladder pressure for more precise blood pressure readings.

Standardized obstacle courses, contrast changes, and video scoring measure critical illumination levels and step speed in retinal dystrophy mobility tests.

Dual distal and proximal ear canal sensors use heat-balance calculation to estimate core body temperature despite blocked tympanic view.

Two optical sensors at different applied pressures estimate beat-to-beat blood pressure without volume-clamp servo control or frequent adjustment.

Rate-of-change checks detect CGM sensor errors, disable calibration input, and preserve reliable glucose readings during unstable signals.

EEG monitoring flags compliant and non-compliant fMRI task periods in real time, reducing invalid scans and repeat imaging.

A spring-loaded probe maintains stable tissue contact and limits excess force, improving intraoperative oximetry accuracy when manual holding is unreliable.

Head position, temperature, and pressure sensing are combined in an implantable ICP catheter to improve accuracy, stability, and patient comfort.

Continuous interstitial glucose sensing uses self-calibration and wireless on-body electronics to reduce fingersticks, pain, and missed monitoring.

Biased palm-contact interfaces on a steering wheel enable continuous optical monitoring of heart rate, SpO2, and blood pressure with more reliable readings.

Detects abnormal glucose sensor signal fluctuations and compensates faults, noise, timing drift, and power issues to improve monitoring reliability.

Electrode sensing and resonance scanning detect diaper state changes with lower complexity, fewer false alerts, and longer battery life.

Pickup detection activates biometric measurement and wakes an external device, enabling rapid data transfer without direct user manipulation.

Sequence numbers, timestamp adjustment, and cross-correlation align signals from separate monitors despite network latency.

Intracoronary ECG identifies a stable low-resistance phase for pressure-ratio measurement, improving consistency without adenosine.

Red and infrared emitters generate signal-ratio correction factors to address SpO2 errors caused by tissue scattering, absorption, and pigmentation.