E-bike Dual Switch Controller for Multi-Function Operation
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Solution Overview
Problem
The existing electrical bicycle operating systems are complex and costly due to the large number of switches required for controlling various components like electrical shifting, suspension, and seatpost adjustments, leading to rider confusion and increased system complexity.
Innovation Solution
The system employs a dual-switch configuration with a controller that generates multiple signals to simplify operations by allowing concurrent control of electrical shifting, suspension, and seatpost adjustments using a single pair of switches, reducing the overall number of switches and enhancing user interface efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple switches are used to control electrical shifting, suspension, and seatpost adjustments, then control functionality is comprehensive, but system complexity and cost increase
Solution Approach 1:
The first and second switches are designed to perform multiple functions through different operation modes. When operated concurrently, they control electrical shifting; when operated sequentially, they control seatpost adjustment and suspension adjustment. This multi-functionality reduces the total number of switches needed while maintaining comprehensive control capabilities.
Solution Approach 2:
The control functions for electrical shifting, seatpost adjustment, and suspension adjustment are merged into a unified control system using only two switches. The controller distinguishes between different operations by detecting the timing and combination of switch operations, combining multiple control functions into a single integrated system.
2Measurement precision
If multiple switches are used to control various components, then control precision is maintained, but ease of operation decreases due to rider confusion
Solution Approach 1:
The system dynamically interprets switch operations based on their timing and combination. The controller detects whether switches are operated concurrently or sequentially to determine the intended function, providing precise control interpretation without requiring the rider to remember multiple separate control schemes.
Solution Approach 2:
The two switches serve as universal control inputs for multiple functions. By designing the switches to trigger different operations based on their operation pattern rather than assigning dedicated switches to each function, the system maintains control precision while simplifying the user interface and reducing rider confusion.
3Adaptability or versatility
If more switches are added to control additional functions, then functionality increases, but manufacturing cost increases
Solution Approach 1:
The system achieves comprehensive functionality (electrical shifting, seatpost adjustment, suspension adjustment) using only two switches. This reduction in component count directly lowers manufacturing costs while maintaining full control capabilities through intelligent software-based differentiation of control modes.
Solution Approach 2:
The system uses temporal parameters (timing of switch operations) to differentiate between various control functions. By detecting whether switches are pressed simultaneously or sequentially, the controller determines the intended operation without requiring additional hardware, thereby reducing manufacturing costs while preserving full functionality.
Data Source
AI summary
An electrical bicycle operating system comprises a first switch, a second switch, and a controller. The first switch is configured to generate a first signal. The second switch is configured to generate a second signal. The controller is configured to generate a third signal different from the first signal and the second signal in response to a concurrent operation of the first switch and the second switch. The controller is configured to generate a fourth signal different from the third signal in response to a release of the first switch in a state where the second switch is operated continuously after the concurrent operation.