Acoustic Signal TRIZ Cases
- Open Vehicle Acoustic Warning Frequencies Against Wind Noise
Warning tones tuned to 900-20000 Hz stay audible over motorcycle wind noise, enabling faster driver reactions without unsafe loudness.
- Hydraulic Disc Brake Reservoir Membrane Monitoring for Pad Wear
Membrane position sensing in a bicycle hydraulic brake reservoir tracks fluid level, pad wear, and leak-related system integrity.
- Motorcycle Trajectory Guidance Using Free-Space Conflict Prediction
Sensors detect usable free spaces around a motorcycle, predict trajectory conflicts, and guide the rider toward a collision-free path.
- Leaning Vehicle Handle Switch Layout for Overturn Notification Cancel
A centrally placed cancel switch stays visible after a lean vehicle overturn, helping riders stop accident notifications from either side.
- E-Bike PMSM Wheel Locking for Theft Detection and Prevention
Rotor-position sensing detects unauthorized e-bike movement, then PMSM current control locks the wheels and triggers an alarm.
- Training Wheel Ratchet Feedback for Bicycle Balance Learning
An elastic tongue and ratcheted hub create clicks during ground contact, giving riders real-time balance feedback without losing training wheel stability.
- Bicycle Brake Reservoir Membrane Sensing for Master Cylinder Fault Detection
Measures reservoir membrane movement to detect master cylinder sealing faults, clogging, and mounting errors before brake failure.
- Motorcycle Tilt-Switch Anti-Theft Control With GPS Tracking
Tilt sensing and GPS tracking keep a parked motorcycle inoperable, trigger alarms on angle change, and help locate theft attempts.