Bicycle Electric Control Unit for Multi-Protocol Wireless Pairing

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Solution Overview

Problem

Human-powered vehicles with electric devices face usability issues due to the inability to communicate effectively when using different communication protocols.

Innovation Solution

The electric device of a human-powered vehicle is equipped with wireless communicator circuitry capable of communicating using multiple communication protocols and an electronic controller to manage signal transmission, allowing pairing and interaction with electric devices regardless of response signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the electric device uses a single communication protocol for pairing, then the device complexity is reduced, but the adaptability to different electric devices is limited

Engineering Contradiction:
Improvecompatibility with different communication protocolsVSAvoidcomplexity of wireless communicator circuitry
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The wireless communicator circuitry is designed to support multiple communication protocols (first and second protocols) simultaneously, enabling the electric device to communicate with various types of electric devices regardless of which protocol they use. This multi-functionality approach allows a single device to serve multiple communication purposes without requiring separate dedicated hardware for each protocol.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system dynamically changes communication parameters by selecting different protocols based on the pairing object. The electronic controller determines which protocol to use (first or second) depending on the characteristics of the electric device being paired with, allowing flexible adaptation to different communication standards without fixed protocol constraints.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the electric device transmits signals repeatedly using the first communication protocol regardless of response signals, then the reliability of pairing is improved, but the power consumption increases

Engineering Contradiction:
Improvereliability of pairing processVSAvoidpower consumption of wireless communication
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The pairing process incorporates feedback mechanisms where the electronic controller monitors response signals from the paired electric device. Based on this feedback, the controller intelligently determines whether to continue transmitting signals using the first protocol or switch to the second protocol, avoiding unnecessary repeated transmissions and reducing power consumption while maintaining pairing reliability.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The communication strategy dynamically adapts during the pairing process. Instead of statically repeating transmissions regardless of outcomes, the system adjusts its behavior based on real-time conditions and received responses, switching between different communication protocols as needed to achieve successful pairing with minimal energy expenditure.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12509184B2Electric device of human-powered vehicle
Publication Date: 2025.12.30 SHIMANO INC
  • US12509184B2 patent drawing
  • US12509184B2 patent drawing
  • US12509184B2 patent drawing

AI summary

An electric device comprises wireless communicator circuitry and electronic controller circuitry. The wireless communicator circuitry is configured to wirelessly communicate with first wireless communicator circuitry of a first electric device using a first communication protocol. The wireless communicator circuitry is configured to wirelessly communicate with second wireless communicator circuitry of a second electric device using a second communication protocol. The electronic controller circuitry is configured to control the wireless communicator circuitry to wirelessly transmit a first signal using the first communication protocol. The electronic controller circuitry is configured to execute pairing between the electric device and the first electric device based on a first response signal wirelessly transmitted from the first wireless communicator circuitry of the first electric device. The electronic controller circuitry is configured to control the wireless communicator circuitry to wirelessly transmit a second signal using the second communication protocol regardless of the first response signal.