Bicycle Control System with Dynamic Wake-Sleep Mode Switching
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Solution Overview
Problem
Existing bicycle control systems face inefficiencies in power management, as they often consume high electrical power in active modes and fail to effectively switch between operational and dormant states, leading to unnecessary energy usage and reduced battery life.
Innovation Solution
A control system for bicycles that includes a movement-information obtaining device, an actuation controller, and a mode controller, which switches between wake and sleep modes based on detected movement or rider information, utilizing a detector circuit to wirelessly receive carrier waves and adjust the actuation controller's power consumption accordingly, featuring a light sleep mode and deep sleep mode to minimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the actuation controller operates in wake mode to control the actuator, then the bicycle system responds quickly to user input, but electrical power consumption increases
Solution Approach 1:
The actuation controller dynamically switches between wake mode and sleep mode based on system activity. The controller transitions to sleep mode after detecting a predetermined period of inactivity, reducing power consumption while maintaining the ability to quickly resume operation when movement is detected again
Solution Approach 2:
The controller implements periodic monitoring of movement information during sleep mode, transitioning to wake mode only when movement is detected. This periodic check mechanism balances power savings with responsive operation, avoiding continuous high-power operation
2Duration of action of moving object
If the actuation controller operates in sleep mode to reduce power consumption, then battery life extends, but the system response time increases
Solution Approach 1:
The movement-information obtaining device continuously monitors bicycle movement even when the actuation controller is in sleep mode. This preliminary detection of movement conditions allows the controller to wake up proactively before user input is needed, minimizing actual response delay
Solution Approach 2:
The controller receives continuous feedback from the movement-information obtaining device about bicycle motion. This feedback mechanism triggers automatic state transitions from sleep to wake mode, ensuring the system responds promptly to actual riding conditions while maintaining power savings during true idle periods
3Reliability
If the controller continuously monitors movement information, then the system remains highly responsive, but electrical power consumption increases
Solution Approach 1:
The control system is segmented into two functional parts: the movement-information obtaining device that continuously monitors at low power, and the actuation controller that operates in high-power wake mode or low-power sleep mode. This segmentation allows continuous monitoring capability while enabling the main controller to conserve power
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
The system efficiently manages power by reducing electrical consumption in dormant states and quickly transitioning to active modes when needed, thereby extending battery life and optimizing energy usage.
Implementation Method 1
The mode controller includes a detector circuit configured to detect carrier wave including the movement information
Data Source
AI summary
A control system for a bicycle comprises a movement-information obtaining device, an actuator, an actuation controller, and a mode controller. The movement-information obtaining device is configured to obtain movement information indicating a movement of at least part of a first bicycle portion and configured to wirelessly output the movement information. The actuator is configured to actuate at least a second bicycle portion. The actuation controller has a wake mode to control the actuator based on an input signal and a sleep mode to be suspended under an electrical power consumption lower than an electrical power consumption in the wake mode. The mode controller is configured to wirelessly receive the movement information and configured to switch the actuation controller from the sleep mode to the wake mode based on the movement information.