Current/Voltage Measurement TRIZ Cases

An air-core Rogowski coil on a flexible PCB eliminates ferrite non-linearity to improve RF measurement accuracy.

A digital voltage detector system provides accurate input voltage measurements using an analog-to-digital converter and microcontroller.

A grid interconnection relay detects abnormalities by chronologically outputting monitor voltages with different values from the power conditioner.

Dual charge/discharge control devices monitor current via switch voltage and sensing resistor for precise overcurrent detection.

Toroidal platform measures electrical, thermal, and mechanical parameters on energized conductors using time-division multiplexing to prevent data collisions.

Uninterruptible power supply generates frequency variations to identify affected nodes, resolving manual monitoring complexity in dynamic data center networks.

A spatial sensor array uses synchronized field effect transistors to detect time varying electric fields across a wide dynamic range.

Airtight hollow tubes loop around conductors inside sealed vessels to guide optical fibers without compromising the internal gas environment.

Segmented detectors measure average voltage and detect temporary drops to identify abnormal states, reducing unnecessary service costs.

A microgenerator-based revolution counter stores pulse data in FRAM memory for autonomous operation.

A series resistor network conducts currents proportional to individual cell voltages to identify the maximum voltage among battery cells.

Arc detection identifies discharge inside the terminal box while switching elements connect phases to earth, eliminating mechanical withstand requirements.

A secondary battery display device calculates residual capacity using open-circuit voltage and stored values to provide stable readings.

Compensating circuit feeds back output voltage to adjust intentional offset voltage, resolving accuracy loss from operation delay in DC-DC converters.

Multiple sensors average local temperatures to calculate correction factors that compensate for Verdet constant drift and wave plate variations.

Electronic drift suppression circuit applies offset value to current signal for dynamic calibration.

Autocalibration circuitry adjusts supply voltage signals via resistive networks to cancel PVT variations and reduce startup delay.

Switching between learned and startup-determined offset corrections based on sensor temperature maintains measurement precision in cold environments.

A voltage measuring module samples the charging interface potential to determine universal serial bus connection states.

A laminated contactor assembly integrates an interposer to distribute electrical connections across multiple shorter paths.

A voltage detection apparatus uses high-potential and low-potential switches to detect terminal voltages across battery cells.

A voltage measuring device samples unregulated DC bus voltage via inductive coupling and a sampling capacitor.

A four-contact measurement resistor minimizes solder resistance impact in electronic load testing circuits.

Series resistors detect leakage current via voltage drops, preventing thermal events and measurement errors in battery systems.

Automated voltage comparison detects power supply connection errors in function modules.

Redundant diagnostic flags from separate hardware devices prevent single-point failures, ensuring reliable contactor opening during battery faults.

Tapered ferrite cores isolate the coaxial sensing resistor from DC ground, eliminating parasitic inductance to enable sub-nanosecond rise time measurements.

Frequency-based signal injection measures electrical connection states without dismantling the cross-bonded grounding system.

Intelligent electronic devices validate firmware versions before execution, preventing system reliability deterioration during upgrades.

A differential amplifier compares reference and standard voltages to detect transmission line faults in power source circuits.

Testing device detects defects in transparent electrode sheets before bonding by analyzing signal response waveforms, enabling sheet reuse and reducing waste.

A disconnection detection device measures current ratios across branched conducting paths to identify strand faults in insulated wires.

Continuous thermal monitoring detects compromised joints at low loads, preventing arc flashes and equipment failures.

Master unit determines slave unit positions along a stub bus by measuring voltage potential drops across power and ground lines.

An adaptive cooling system generates a fan speed table from onboard memory to dynamically select operational states.

A ferrofluid tube on a conductor signals faults via magnetic actuation.

AIPC measurement compares feeder and transformer current data to identify unauthorized power consumption.

A transformer protection device calculates phase current differences to derive waveform symmetry parameters for accurate inrush identification.

Neutral point grounding enables real-time detection of disconnections and short circuits in power lines, preventing outages and electric shocks.

A controller detects voltage states on dual AC power input cords to verify connection status.

A door switch inspection device calculates voltage differences between adjacent landing floors to detect abnormal contact conditions in elevator systems.

A magnetic sensing scheme uses a sense inductor coupled to an output inductor to provide a control voltage for voltage regulation.

A multi-element instrumentation device integrates power supply modules with test instruments via a unified user interface.

A battery state of charge estimation method combines voltage detection with coulomb counting to refine remaining capacity calculations.

Planar PCB coils paired with differential magnetic sensors measure low currents accurately, overcoming weak field limitations.

A battery charging system estimates full charge capacity by measuring resting voltage after a temporary interruption.

A ring waveguide device uses a reverse-biased diode junction to measure leakage current for resonance wavelength detection.

A rechargeable electric tool monitors battery voltage to trigger a warning while maintaining motor power supply for continued operation.

A method identifies electric service components by comparing measured RMS voltage signals against reference tolerance ranges.