Bicycle Rotation Detection via AC Waveform Analysis
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Solution Overview
Problem
Existing bicycle rotation detecting devices are not easily installable in existing electrical systems and lack flexibility in attachment and detachment from hub dynamo components.
Innovation Solution
A bicycle rotation detecting device comprising a first electrical connector, a second electrical connector, a rotation detecting circuit, and an output part, where the second connector is electrically connected to the first connector via an electrical path, detecting alternating current waveforms to produce a rotation detection signal and outputting it for use in calculating wheel rotations, with optional rectification to direct current and wireless communication capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a bicycle rotation detecting device is integrated into the hub dynamo, then the rotation detection function is achieved, but the installation and detachment become complex and inflexible
Solution Approach 1:
The rotation detecting device is separated from the hub dynamo into independent functional modules. The detecting device includes its own electrical connectors and can be independently installed or detached without affecting the hub dynamo structure, enabling flexible attachment and detachment while maintaining simple installation procedures
Solution Approach 2:
The electrical connectors are designed with universal compatibility to interface with standard hub dynamo electrical systems. The detecting device can be universally attached to different hub dynamo models through standardized electrical connections, providing adaptability without increasing installation complexity
2Ease of operation
If the rotation detecting device uses standard electrical connectors, then ease of installation is improved, but electrical signal integrity may be compromised
Solution Approach 1:
The electrical connectors serve as intermediary components between the hub dynamo and the rotation detecting device. These connectors are specifically designed to maintain electrical signal integrity while enabling easy plug-and-play installation, acting as a reliable mediator that preserves signal quality during the connection process
Solution Approach 2:
The electrical connection system replaces complex mechanical integration methods with simple electrical plug connections. This substitution maintains signal integrity through dedicated electrical pathways while dramatically simplifying the installation process to basic connector attachment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy installation and detachment from bicycle electrical components, providing accurate rotation detection signals for cyclometers and lamps, enhancing the flexibility and functionality of bicycle rotation monitoring systems.
Implementation Method 1
The rotation detecting circuit detects a waveform of alternating current in the electrical path and produces a rotation detection signal
Data Source
AI summary
A bicycle rotation detecting device is provided with a first electrical connector, a second electrical connector, a rotation detecting circuit and an output part. The second electrical connector is electrically connected to the first electrical connector by an electrical path. The rotation detecting circuit detects a waveform of alternating current in the electrical path and produces a rotation detection signal. The output part is electrically connected to the rotation detecting circuit. The output part outputs either the rotation detection signal of the rotation detecting circuit or a signal based on the rotation detection signal of the rotation detecting circuit.