Elevators TRIZ Cases

Hybrid flywheel and capacitor storage captures descent energy to mitigate grid outages and improve efficiency.

A passenger position tracking device uses lobby and in-car cameras to identify users and monitor their location within the elevator car.

Facial recognition cameras detect user identity to automate elevator dispatch scheduling, eliminating manual destination input and reducing wait times.

A control apparatus manages elevator motor field weakening current to maintain rotational speed and torque output.

A traction sheave and car distance comparison method estimates rope slip during normal elevator operation.

A control unit compares shaft door locking signals against a stored reference sequence to verify personnel exit from the elevator shaft.

Shaft cameras provide real-time visual feedback to emergency personnel navigating hazardous elevator environments.

A programmable elevator car control system drives the car to precise hoistway locations for internal component inspection.

A controller weights condition sensor data with environmental inputs to determine equipment state in passenger transport systems.

Presence detectors verify user location at the interface, preventing fake requests that increase wait times for other passengers.

An emergency elevator installed in a hoistway enables rescue operations during renovation, preventing service disruption to neighboring elevators.

Segmented rucksack and lateral guide rails resolve obstruction during lateral transfer while centralizing weight force to reduce roller wear.

A floor position detection device uses multiple Hall sensors to generate reliable elevator floor signals.

Automated inertial monitoring detects secondary events via multi-axis vibration analysis, eliminating manual inspection time.

Building sway mode detects structural oscillation and adjusts elevator car operations to mitigate rope sway effects.

Detectors sense compensation rope misalignment to trigger a controller that stops elevator movement, preventing entanglement.

A brake monitoring device varies electrical power to the release mechanism and measures the resulting release power value.

Switching brake coils alters voltage distribution to extend braking time, reducing passenger discomfort during emergency stops.

Lift controller adjusts first car speed and acceleration based on second car status to reduce passenger waiting times while maintaining safety distances.

Actuator enables low-speed tripping below gripping threshold, preventing creeping without complex locking mechanisms.

Integrated guide means allow alternative drive movement of stuck elevator cars, restoring emergency access when the primary linear drive fails.

Auxiliary panel converts serial signals between new control panels and legacy elevator devices, shortening out-of-service periods.

A guidance presenting device detects car and landing situations to display dynamic content for users.

Segmented tension member circuits detect breakages and contacts while resisting environmental interference without precise measurements.

Automated optical detection replaces manual inspection of elevator landing door locks, reducing time and cost while maintaining measurement precision.

A brake control circuit manages elevator braking force using pulsed current delivery to the winding.

An override control channel detects faults in redundant safety channels to prevent unnecessary activation, reducing system complexity and cost.

Integrating optical sensors into composite ropes provides quantitative wear data, resolving the trade-off between rope strength and mass.

Deflecting axles in a traction medium reservoir adjust working length by altering axle spacing, preserving cable service life during building growth.

Fixture communication devices receive wireless travel signals from mobile phones to automate call button activation, reducing manual interaction delays.

A smart helmet with a signal emitter detects mechanic proximity to an elevator car and triggers a stop command.

Sequential forwarding of a single test telegram reduces data transfer volume and hardware complexity while maintaining reliable failure detection.

End cage jamming buffer mechanisms release controlled wire rope length when shear bolts fail, preventing breakage during ultra-deep shaft hoisting failures.

An elevator control unit assigns specific onboard positions to passengers based on destination floor data.

Intermediary rigid plate blocks guide rail debris from damaging the elevator brake speed sensor, resolving measurement precision versus contamination risks.

A sensor network triggers secondary measurements based on specific operating characteristics to reduce data transmission volume.

A portable smart device detects localising characteristics during elevator cabin movement to establish absolute position references.

Classifying real-time current values by movement direction enables precise breakdown prediction, preventing safety accidents caused by insufficient monitoring.

An elevator system segments passengers using collected characteristics to transmit tailored control commands for optimized dispatching.

Central control station directs elevators to travel vertically downward and answer down hall calls during non-fire emergencies.

Time-of-flight cameras monitor governor rope sway to detect abnormal conditions while reducing system complexity compared to multi-camera setups.

A mine hoist control system adjusts payload and speed parameters based on real-time ore flow monitoring.

Segmented dual login authentication ensures technicians complete required tasks onsite, reducing unnecessary repairs while maintaining ASME code compliance.

A software update unit retrieves compatible program versions from a server using unique identifiers to install correct firmware on elevator control boards.

Control system prevents cab movement and activates lighting simultaneously to eliminate manual activation errors.

Magnetic field readers replace mechanical switches to eliminate oxidation failures while reducing sensor count through multi-function identifiers.

A flyweight stopper constrains radial movement in an elevator governor sheave, eliminating ratchet-induced vibrations and part wear during ascent or descent.

A control device sets two non-service levels per floor to manage call registration permissions dynamically.

Curvilinear belt guide features orient elevator belts to reduce uneven pressure distribution and wear on traction sheaves.

Microprocessors calculate lift car speed from independent position signals for continuous motion tracking.