Current/Voltage Measurement TRIZ Cases

A single-shunt measurement and correction scheme recovers three-phase inverter currents and blocks overcurrent without adding extra sensors.

A split boost-current bias circuit speeds comparator switching during overvoltage events while keeping standby power and area low.

An electrochemical battery model estimates lithium-ion concentration and overpotential to detect salt precipitation before aging or short circuits.

Layered SPM modeling tracks cathode and anode lithium-ion diffusion differences to estimate battery state and voltage in real time.

Local LSTM-based battery anomaly detection sends only compressed abnormal state data to the server, cutting cloud load and communication cost.

A touch-accessible reference lets the circuit compare protective earth voltage to local earth and detect external-potential faults more reliably.

Periodic ranking of high- and low-voltage cells exposes abnormal battery cells that remain within normal ranges while reducing monitoring load.

Models cathode-anode lithium diffusion differences to estimate battery SOC and SOH more accurately for real-time monitoring.

A switch matrix and stress-balanced polysilicon resistors measure resistor offset and improve wireless power current sensing accuracy.

Intermediate capacitor connections in a cell stack RC filter cut capacitor voltage stress while preserving accurate cell-by-cell measurement.

Comparing high-side and low-side sensor signals verifies normal wheel speed transmission while improving redundancy without unnecessary circuit cost.

Direct vent-position monitoring detects battery thermal runaway from pressure-driven sealing movement, reducing false warnings from cell measurements.

Microvolt voltage-drop screening after shipping charge detects low-voltage battery cells earlier while maintaining strong defect discrimination.

Periodic measurement and synchronized communication cut battery diagnosis power use while preserving voltage and temperature monitoring.

Constant temperature, voltage-region setting, and equilibrium control improve OCV accuracy for vanadium battery charging and discharging.

A shunt regulator and resistor network set an accurate overcurrent threshold voltage with less temperature drift in power conversion switching circuits.

Current-imbalance sensing and dual trip thresholds let the breaker catch ground faults and high surges without false trips.

Independent bypass-path comparators detect overloads during sleep mode, protecting safety-critical vehicle loads with low quiescent current.

Leakage current measured at 25-35% or 70-90% charge enables faster, more accurate LFP battery quality screening with less temperature impact.

Controlled current and temperature compensation let retractable in-vehicle buttons use shape-memory actuation without voltage damage or erratic motion.

Rate-of-change patterns from outage meters help utilities pinpoint faults as upstream, downstream, or nearby to speed service restoration.

Undervoltage monitoring with reset thresholds and delay timing prevents repeated RESET pulses as stored energy depletes.

A dual-path current monitor switches from simulated to sensed current during inductor saturation, improving protection timing in high-frequency converters.

Voltage threshold crossing counts replace manual oscilloscope checks, enabling faster and more accurate BMS mode diagnosis.

A passive RLC winding extends differential fault-current detection to 100 kHz while keeping fire protection compact and power-independent.

A sensor receiver and processor detect failed gas discharge tubes on input and output lines, avoiding false status reports and lost surge protection.

A passive RLC circuit across the transformer secondary extends fault-current detection beyond 20 kHz without added bulk or power-dependent fire protection.

Comparing measured and modeled cell voltages reveals internal short circuits early without complex sensor arrays, supporting timely battery safety action.

Embedded PCB coils and a test circuit shrink receptacle interrupters while preserving current sensing for ground and arc fault detection.

A sensing resistor, op amp, and MOSFETs detect PCB-to-safety ground voltage differences early to prevent sparking, excess current, and fire.

Voltage clamping at a PWM terminal signals LED faults without extra communication lines, cutting cost and system complexity.

By limiting actuator feed-in efficiency to 50% or less during stochastic regeneration, the vehicle battery needs less reserve and stays more stable.

Multiple battery features are compressed into a reduced profile so outliers can reveal battery state with higher accuracy and lower processing load.

Dual diagnostic voltages let an antenna amplifier detect faulty antenna connections without ambiguity from window heater state or potential.

A voltage drop detector wakes a switchable monitor only during engine cranking, preserving reliable voltage capture while reducing battery drain.

Inductive coupling between two coils detects fault current without shunt resistors, cutting ohmic losses, cost, and AC/DC sensing complexity.

Instantaneous current slope detection triggers the trip module at zero current, reducing arcing and improving breaker cutoff accuracy.