Elevators TRIZ Cases

Safety controller monitors elevator car position to selectively apply drive brakes based on zone status.

An elevator switch adapter enables automatic resetting of emergency safety switches.

A motor control method calculates actual speed using time durations between magnetic signal detections from floor emitters.

An elevator control system positions the car to predetermined maintenance spots to enable safe landing door access.

Double integration of accelerometer data drifts over distance, so the system detects door-opening buffets with a pressure sensor to correct estimated positions.

Radar sensors detect rope sway to enable individual elevator control during building sway, reducing unnecessary service interruptions.

A shared actuator seat rotates to engage a centrifugal mechanism, driving a reset lever for overspeed protection switch control.

An elevator control system validates passenger requests using camera and proximity sensor data to identify valid transport calls.

An elevator control method assigns calls using neural network probability outputs filtered by eligibility rules.

A motor drive measures electrical parameters to calculate the elevator balancing weight difference using a power model.

Segmented braking via a shear pin cushions sudden deceleration forces to protect lift car components and occupants.

A traction determination means measures friction force between the driving member and hoisting ropes to dynamically adjust elevator car movement profiles.

Dynamic button configuration and color-coded LED feedback resolve user confusion from non-existent floor indicators while maintaining standard component costs.

Retrofitted gearless hoist machine adds a secondary brake drum assembly to legacy shafts, enabling rapid emergency load arrest over shorter distances.

Virtual channels on a shared building network eliminate dedicated cabling while maintaining reliable elevator control data transmission.

Incremental brake force adjustment eliminates jerky vibrations during elevator rescue, ensuring passenger comfort and safety.

Fluid flow sensor detects elevator drive fan operation status to prevent overheating and reduce manual maintenance labor.

A parallel capacitor bank in the elevator car stores energy to open doors automatically during power outages, eliminating manual rescue risks.

A car safety supervising unit processes sensor signals to monitor elevator parameters during installation.

Spring-loaded lever automatically resets magnetic brake actuation mechanism, eliminating tedious manual intervention procedures.

A robot-use elevator system operates with controller-managed parameters outside human limits to optimize travel times.

Camera system captures component images during auto-positioning to resolve confined space inspection bottlenecks.

Sensor tracking confirms passenger location before dispatch, canceling ghost calls that waste energy and strain mechanical components.

Electronic phase control devices replace mechanical contactors to eliminate switching noise while maintaining reliable safety monitoring.

Pressing shoes activate during emergency stops to maintain rope traction when polymer friction drops.

Resonant inductive PCB coils replace mechanical sensors to measure elevator car motion state and landing position with high resolution.

Assigns elevator cars to alternate shaft positions to prevent traffic jams and reduce waiting times during peak hours.

A frequency spectrum footprinting method estimates elevator car position by comparing real-time spectral data against reference patterns.

An ABS brake control circuit manages elevator deceleration through dynamic braking modes.

Automated elevator control system acquires operation parameters via checksum monitoring and pre-condition checks.

A state estimation apparatus uses elastic wave sensors to acquire waveform information from brake material contact.

Bridge-type cord contacting elements connect adjacent wire cords to enable belt condition monitoring and reduce connecting device complexity.

Arc-shaped positioning pins roll within grooves to reduce friction and noise, resolving reliability trade-offs in elevator safety systems.

Elevator tension element uses alternating wire lay directions to create point contact.

Installing the car roof before wall panels uses spring-tensioned latches to protect workers from falling debris and prevent falls.

Automated notification system replaces manual physical inserts with digital data updates for destination floors.

An H frame supports two elevator cabs using linear actuators for selective vertical movement.

An additional rope counteracts connecting element weight, eliminating uneven loads and torque on guide rollers.

Mounting a gearless cylindrical drive on the counterweight eliminates noise transmission into the shaft while optimizing space utilization.

Controller activates split group dispatch when utilization exceeds threshold, reducing waiting times and eliminating duplicate requests.

Automated thermal imaging replaces hazardous physical inspections, enabling rapid evacuation planning.

An elevator control system uses camera and weight sensors to detect robot presence.

Nanoscale polyhedral oligomeric silsesquioxane filler chemically bonds to polymer matrix, maintaining flexibility while improving flame resistance.

Comparing observed elevator data against peer elevators reduces false alarms from single-unit misinterpretations while maintaining reliable blockage detection.

Horizontal sheave displacement damps compensating rope vibration during earthquakes while maintaining rope engagement with the sheave.

Segmented brake modules with adjustable air gaps reduce noise by lifting pads during normal operation while ensuring fail-safe emergency braking.

A mobile device transmits pulse signals through an elevator safety chain to identify broken electrical links.

Detection coils switch between normal operation and self-diagnosis modes using a test coil to verify sensor functionality without car movement.