Elevators TRIZ Cases

Pulley-mounted encoders on a car-mounted governor replace hoistway sensors to deliver accurate elevator position and speed with lower installation cost.

A toothed-belt drive built into the lift columns enables flexible platform lift installation without building modifications while saving space.

Usage data analysis detects abnormal stairlift wear, faults, or misuse and triggers maintenance requests before fixed service intervals miss them.

A delayed emergency stop keeps the converter available as a backup brake, improving elevator braking reliability when mechanical brakes fail.

A constant-width rotating brake element wedges against the guide rail to boost elevator braking capacity in a smaller package with less rail damage.

A multichannel edge gateway assigns protocols to separate elevator data streams, improving real-time IoT throughput, reliability, and security.

Wireless floor call stations and car controllers automate hoist elevator requests on construction sites, replacing yelling and walkie-talkies.

Sub-group software rollout for passenger conveyors improves update reliability, limits downtime, and supports rollback after failures.

Historical floor-call data is scored to predict likely demand floors, letting the elevator reposition early and cut user waiting time.

Electronic information plates track elevator component identity and usage, enabling accurate lifecycle verification and automated maintenance alerts.

A dual-mode elevator touchscreen uses tactile guidance, voice activation, and audio feedback to help visually impaired passengers operate safely.

Dynamic torque monitoring during elevator travel reveals brake activation delay and faulty machinery brakes without stopping the car.

Electrical resistance and machine learning estimate hidden hoisting member strength loss and trigger elevator stop alerts before failure.

A manual switch outside the shaft keeps the motor path interrupted after inspection mode, preventing elevator restart until the technician exits safely.

Audio cues and haptic indicators let visually impaired passengers find and use elevator touchscreen controls more safely and intuitively.

A shared power cable with modulation carries both power and call data, cutting floor-by-floor elevator terminal wiring complexity and install time.

Current-transformer power data reveals elevator load and passenger presence without control-box access, enabling off-peak energy control.

Protocol converters unify management of mixed-manufacturer elevator devices, enabling remote control and faster maintenance across different networks.

A rail-mounted latch and sling-mounted guide lock the elevator car during maintenance while reducing shaft space, switch size, and installation complexity.

Parallel switch selection and level-signal checks identify faulty landing and car door locks while reducing relay-heavy circuit complexity.

AI-based passenger sizing and real-time car space monitoring help assign suitable elevator cars and cut waits for wheelchair and luggage users.

Customizable elevator assistance modes match audio, visual, and door-timing features to each disability without delaying other passengers.

A contact-displaced elevator car barrier opens the safety chain to stop the car early and protect maintenance personnel from impact.

A guide-rail-mounted buffer swings into place without shaft-pit collisions, creating a larger protected maintenance space.

A rail-mounted latch and position switch immobilize the elevator car during maintenance while reducing shaft space and mechanical complexity.

Machine learning monitors sector demand and reassigns elevator cars between groups to cut wait time and improve throughput.

A shared inspection controller lets workers switch and move multiple elevator cars from one work area while safety distance control maintains safe maintenance.

A unified Ethernet bus and configuration manager simplify elevator node updates and new component integration without extra protocol stacks.

Using a top crossbeam and rope-pulley leaping inside the shaft, the lift reaches higher floors with stable operation despite outdoor climate limits.

Bypassing brake contacts with parallel connectors lets each elevator holding brake be tested separately from the car motion state.

Wireless probe requests from passenger devices let the elevator identify profiles and anticipate destination floors without button input.

A shaft-accessible rescue interface drives the compensation member from the lowest landing floor, avoiding complex mechanical links and safer manual evacuation.

Measures elevator rope stiffness from sheave rotation under unbalance to detect wear, wire breaks, and remaining service life.

By checking car speed, direction, and distance to an open landing door, the controller avoids false brake stops from worn door mechanisms.

A lock-linked elevator notification keeps maintenance warnings active during testing, preventing passenger use and technician interruptions.

Sensor motion readings and a probabilistic classifier add touchless elevator input without replacing familiar button panels.

Real-time braking distance calculation triggers elevator emergency stops before buffer impact limits, enabling higher speeds with smaller safety margins.

Measured values from past elevator journeys are used to correct stopping distance, improving leveling accuracy and reducing readjustment.

Conductive guide rails and brackets power each shaft door drive, cutting cabling, alignment work, and installation complexity.

Movable blocking devices lock the elevator car in the hoistway to create a safe maintenance volume without permanently increasing shaft space.

Stored device IDs and a shared secret let a replacement coordinator securely restore a passenger conveyor control network without manual re-pairing.

Sequential contact bypass lets engineers verify each elevator holding brake from car motion, reducing brake test complexity and cost.

Multiple sensors and machine learning distinguish trapped passengers from objects, cutting false alarms and speeding elevator rescue.

A two-stage gateway authentication flow secures elevator safety controller maintenance access without direct device-to-controller links.

Robot calls are delayed by priority and transport capacity, keeping elevator service efficient for people while still supporting robot trips.

A single-sheet double guide rail integrates car, counterweight, and safety-device support to save shaft space and improve bending rigidity.

Three combined guide rails stabilize the elevator car and counterweight while cutting hoistway space, material use, and installation cost.

A control app links passenger profiles with building data to guide users to elevators and provide automated assistance for accessible travel.

Shared guide rails stabilize the elevator car and counterweight while cutting rail count, hoistway space use, and installation cost.

Barcode or RFID tags on elevator tension members enable automatic installation checks and controller actions when the wrong member is detected.