Contactless Torque and Angle Detection Using Dual Magnet Rings

A single magnet array structure is designed to perform multiple detection functions simultaneously. The magnet array can detect both twisting torque and rotational angle by processing signals from multiple magnetic sensors arranged in specific patterns, eliminating the need for separate detection systems for each parameter.

Multiple detection functions are merged into a unified detection system. The patent combines torque detection and angle detection capabilities into one integrated magnet array assembly, where signals from multiple sensors are processed together to derive both twisting torque and rotational angle information from a single structural unit.

Signal processing circuits act as intermediaries between the magnet array and the detection output. These circuits process and differentiate the magnetic signals to extract accurate torque and angle information while filtering out interference caused by the presence of multiple sensors and the magnet array structure itself.

Different regions of the magnet array are optimized for different detection functions. Specific sensor positions and magnetic pole arrangements are tailored to maximize sensitivity to either torque or angle, with the overall system combining these localized optimizations to achieve both functions with high precision.

The detection system automatically detects rider input through the magnet array and shaft rotation, eliminating the need for manual throttle operation. The system self-determines when motor assistance is needed based on the detected rotational movement and torque, providing automatic activation without requiring rider intervention.

The magnet array continuously monitors shaft rotation and torque conditions in advance, detecting rider intent before full pedaling action begins. This allows the motor to be activated in advance based on preliminary detection signals, reducing response delay and providing immediate assistance when needed.