Elevators TRIZ Cases

Primary windings generate harmonic components to induce electro-motive force, eliminating mechanical cables and improving reliability.

A hall call registration apparatus authenticates users and registers destination floors automatically.

A destination operating panel restricts keypad activation based on passenger permissions and call phases.

Segmented arm members slide in parallel planes to extend the platform height while maintaining a compact footprint for maintenance access.

Elevator control unit uses sensors to detect personnel in danger zones before reverting to normal operation, eliminating manual safety checks.

Automated optical detection replaces manual inspection of elevator landing door gibs, reducing time and cost while maintaining safety compliance.

Asymmetric cam wheel lifts pendulum roller at uniform height, resolving inconsistent triggering speed and noise in elevator overspeed governors.

A projector displays a virtual interface while a gaze tracking device detects user eye movements to generate control signals.

Server device predicts elevator idle times using run count data to schedule automatic software upgrades.

Segmented channel walls with removable guide pads minimize position variations to lower power requirements for elevator safety actuation.

Progressive torque testing detects declining brake capacity before failure, enabling scheduled maintenance and reducing unexpected elevator downtime.

Monitoring circuit uses door contact switches to detect open shafts and trigger safety modes, preventing entrapment without extra sensors.

Replacing mechanical contactors with solid-state switches reduces drive device volume while maintaining safety integrity through electronic logic.

Non-contact sensors detect derailment without false triggers from wind sway or smoke, ensuring reliable passenger safety.

A passenger counting method uses stepwise load changes to estimate occupant numbers in elevator cars.

Automated pit sensors replace manual inspections by detecting water accumulation early, allowing the system to stop operation before damage occurs.

A genetic algorithm allocates destination calls across multiple round trips to eliminate queue formation during overcapacity.

A governor reset push part moves a pawl to restore initial position via rope sheave rotation.

A cabin-mounted signal transmitter alerts passengers before an elevator switches between vertical and horizontal transport paths.

Segmented half-ratchets enable radial installation on existing drives, maintaining torsional rigidity while bypassing accessibility constraints.

Wireless transmitter device detects passenger ID data to configure elevator operating parameters automatically.

A call allocation system reserves elevator car space for load calls using mobile terminal data input.

Simulated modems replace physical analog hardware to eliminate PSTN fees and reduce operational costs while maintaining legacy system compatibility.

Segmented projections on a U-shaped clip reduce friction against vertical sliding, preventing buckling during building shrinkage.

Segmenting the load-bearing layer with intermediate layers reduces internal stress during bending, enabling smaller driving sheave diameters.

Stacked prefabricated hoistway modules create a continuous vertical shaft, reducing on-site adjustment time and logistical complexity during installation.

A unified interface manages connection priorities between local service equipment and remote user systems.

An automatic resetting steel wire rope brake uses electromagnet triggering and motor lead screw mechanisms to restore position after activation.

A dual-edge locking mechanism compresses a covering sheet and interlocks with guide rails to seal air gaps in pneumatic systems.

Bluetooth modules broadcast signals to detect passenger movement, resolving invalid elevator calls caused by uncertain presence.

Optical door detection system replaces tamper-prone switches with infrared reflection to ensure elevator safety.

Hydraulic control moves the guiding device to regulate rope distance, eliminating cyclic tension fluctuations from static displacement.

Magnetic propulsion replaces ropes, enabling multiple independent elevator cars to operate simultaneously within a single shaft.

A mechatronic inspection robot navigates elevator hoistways using sensors and manipulation tools to perform automated maintenance tasks.

Hybrid sinusoidal FM-polynomial phase signal model estimates elevator car speed and guide rail vibration for operational management.

Bridging arrangement bypasses safety brake locking to enable auxiliary drive towing, preventing guide rail damage during car recovery.

Detection sensors activate a jaw brake to prevent gravity-induced sliding, resolving safety risks in confined shaft spaces.

Controller calculates current acceleration from position data to activate brakes against a predetermined threshold.

A redundant wheel-based detector device measures elevator speed via guide rail friction.

A door lock detects status parameters and transmits them to a remote device, which calls an elevator to reduce wait time.

A control unit merges video recognition with location signals to verify robot counts, optimizing traffic handling when data differs.

Segmented sheaves with wave springs resolve bearing installation complexity and extend component life in elevator systems.

Elevator group controller exchanges operation data with external power providers to optimize energy storage and scheduling.

A movable unit with a displacement amplifier and stopper stabilizes elevator rope vibration.

Counterweight buffer strokes and dynamic jump calculations maintain safe spacing between multiple elevator cars in a single hoistway.