Bicycle Control Coordination Using Master-Slave Electronic Controllers
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Solution Overview
Problem
Existing human-powered vehicle control systems lack efficient coordination and communication between components, leading to suboptimal operation and increased communication load.
Innovation Solution
A human-powered vehicle control device with a master electronic controller that coordinates and restricts the operation of multiple components based on signals from slave electronic controllers, allowing for preferred operation sequencing and reduced communication load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master electronic controller restricts operation of components based on signals from slave electronic controllers, then component coordination and preferred operation sequencing is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into a master electronic controller and multiple slave electronic controllers, each responsible for specific components. This segmentation allows distributed control while maintaining coordination through signal exchange, resolving the contradiction between improved reliability and increased complexity by organizing the system into manageable modular units.
Solution Approach 2:
The master electronic controller acts as an intermediary that receives operation signals from slave controllers and transmits restriction signals back to them. This intermediary role enables centralized coordination logic without requiring direct peer-to-peer communication between all components, simplifying the control architecture while maintaining reliable coordination.
2Productivity
If the master electronic controller manages operation sequencing of multiple components, then operation efficiency is improved, but communication load increases
Solution Approach 1:
The master electronic controller determines operation sequencing in advance by evaluating signals from slave controllers before components actually operate. This preliminary action allows the system to pre-coordinate operations, reducing last-minute communication adjustments and optimizing the timing of communication exchanges to minimize overhead while maintaining efficient operation sequencing.
Solution Approach 2:
The control system uses periodic signal exchanges between master and slave controllers at strategically determined intervals. Rather than continuous communication, the system employs periodic status checks and coordination signals, reducing communication load while maintaining sufficient oversight for efficient operation sequencing.
Data Source
AI summary
A human-powered vehicle control device is provided for a human-powered vehicle. The human-powered vehicle control device includes a master electronic controller configured to control a first component and a second component. The first component is configured to be controlled by at least one of the master electronic controller and a first slave electronic controller. The master electronic controller is configured to restrict operation of at least one of the first component and the second component based on a first operation signal transmitted from the first slave electronic controller in a case where the first component is controlled by the first slave electronic controller.