Elevators TRIZ Cases
- Elevator Control for Independent Cars in Common Shaft
A control apparatus coordinates independent elevator cars in a shared shaft by synchronizing their travel direction and maintaining defined spacing.
- Elevator Call Input Device with Graphical Floor Selection
A call input device uses a graphical user interface to select current and destination floors via touch or voice commands.
- Elevator Suspension Member Deterioration Detection via AC Voltage
Apply phase-shifted alternating voltages to elevator suspension cords to measure neutral and difference voltages for deterioration assessment.
- Dual Horizontal Driving Machines for Machine-Roomless Elevator Size Reduction
Segmenting the drive into two identical horizontal machines reduces component volume, simplifies installation, and lowers manufacturing costs.
- Elevator Operating Panel With Integrated Fingerprint Scanner
Integrating a fingerprint scanner into the elevator operating panel eliminates separate recognition devices, reducing installation space and wiring complexity.
- Adaptive Elevator Door Drive Travel Curve Optimization
Elevator door drive selects optimal travel curves based on real-time pressure and air flow detection.
- Sliding Maintenance Cabinet for Elevator Hoistway Access
Segmented maintenance cabinets separate high and low voltage systems, enabling safe controller servicing during operation.
- Elevator Passenger Detection Using Ceiling Reflection
Ceiling-mounted sensors detect passengers through reflected signals, resolving obscuration issues and improving elevator dispatch accuracy.
- Elevator Drive System Torque Feedforward Tuning
Automated elevator control unit determines feedforward torque parameters through motor current measurements during test runs.
- Elevator Group Control Using Walking Time Prediction
A group management control device predicts user walking time to optimize elevator car assignment and reduce boarding delays.
- Stairlift Speed Control Using Gyroscope Angular Velocity
Gyroscope detects angular velocity during rail bends to regulate carriage speed, eliminating complex switch infrastructure and reducing installation costs.
- Elevator Control via Passenger Acceleration Correlation
A control system matches passenger acceleration data with elevator car motion to automatically identify the correct vehicle.
- Elevator Control System Cloud Security via Cryptoprocessor
An intermediary cryptoprocessor maintains security while enabling remote software updates for elevator systems.