Elevators TRIZ Cases

Acceleration and direction sensors identify boarding routes before registering elevator calls, preventing useless requests from nearby non-users.

Passenger walk time is combined with elevator travel duration to dispatch cars in time, reducing missed assignments and wait times.

Comparing motor torque at zero and constant speed reveals dragging brakes before friction, heating, and wear escalate.

Real-time load measurements update elevator capacity settings, helping dispatch cars with available space and reduce passenger wait times.

A friction module presses against the elevator guide rail during boarding to reduce car bounce while limiting contact noise.

Parallel extension springs hold governor-rope tension, while a tiltable connector detects spring failure and activates the elevator safety circuit.

Multi-frequency current measurements compare baseline electrical values to separate steel wire rope wear from temperature variation and noise.

This elevator installation approach mounts the hoist on the elevator cab, freeing overhead space and avoiding a separate false car.

An accelerometer and verification logic confirm elevator start and stop events, improving ride data and maintenance decisions.

A gateway combines timestamped controller and beacon data to overcome drift and support precise elevator maintenance alerts.

A seal-driven spring and brake shoe assembly controls cabin movement, reducing failures from power loss, cables, and sensors.

A magnetic cavity and perpendicular winding coils support controllable torque for reliable emergency elevator braking.

When a service call drops, reference-based status updates maintain the elevator request without repeated passenger calls.

A releasable wedge anchor improves elevator rope grip and supply, supporting hoisting-machine relocation during hoistway construction.

This case verifies elevator car start and stop events from acceleration data, improving ride capture and maintenance assessment.

Corrosion inhibitor in the jacket protects elevator steel tension members without pre-coating.

This case shows how elevator controls expand functionality through single, double, long, and combination actuation patterns.

A movable support component protrudes for shaft displacement, then retracts to minimize wall spacing and expand the fixed working region.

The control system shifts prioritized content across elevator displays after status changes or failures, preserving essential functions.

The controller adjusts elevator idle duration from operating data, reducing standby energy use while limiting wear from frequent switching.

Pre-installed brackets pivot from a compact transport position to mounting position, reducing work inside the elevator hoistway.

A centrally guided latch and Z-profile rail receiver simplify elevator car immobilization in tight shafts during maintenance.

This case uses elevator shaft service zones and car-position feedback to lock access where clearance is insufficient during maintenance.

A safety processor adjusts emergency terminal speed limits from hoisting traction data, supporting braking when rope friction changes.

Sensors store and transmit hoistway-section data to alert a designated recipient when assembly deviates from the planned sequence.

Verified access rights and feedback-controlled communication isolation secure conveyor subsystem maintenance while preserving operation.

Sensors compare actual and expected parameter curves to predict elevator suspension wear and support proactive maintenance planning.

This case combines capacitive proximity gestures with conventional inputs for hygienic control and reliable operation.

Switching mechanisms coordinate multiple cars in adjacent hoistways, reducing waits while improving capacity, space use, and collision safety.

This case uses a wireless, physically actuated button module to let mobile robots call elevators without modifying elevator controls.

A mechanical brake uses seal movement and springs to control vacuum elevator descent.

Continuous resistance monitoring detects temporary safety-chain changes, helping elevator teams identify faults before downtime grows.