Electric Toothbrush Bluetooth Pairing for Low-Power Data Exchange
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Solution Overview
Problem
There is a need for an oral care system that provides increased flexibility, improved interoperability, and enhanced user experience for electric toothbrushes by enabling wireless communication between the toothbrush and a mobile computing device, particularly in limited bathroom spaces, where existing solutions struggle to deliver useful information effectively.
Innovation Solution
The system employs Bluetooth or Bluetooth LE technology for bidirectional wireless communication between an electric toothbrush and a mobile computing device, allowing for data exchange and remote control without the need for a PIN code pairing, using a pairing procedure that automatically recognizes the toothbrush, enabling background data transmission and energy-efficient operation modes like sleep and ready modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication is enabled between electric toothbrush and mobile computing device, then interoperability and user experience are improved, but device complexity increases
Solution Approach 1:
The electric toothbrush is designed with universal wireless communication capabilities (Bluetooth or Bluetooth LE) that enable it to interact with various mobile computing devices and external entities, making the communication interface universal and multi-functional across different device types and operating systems
Solution Approach 2:
A communication controller is introduced as an intermediary component that manages all wireless communication between the electric toothbrush and external entities. This mediator handles connection establishment, data transmission, and protocol management, thereby isolating the complexity from the main control unit and simplifying the overall device architecture
2Ease of operation
If automatic connection establishment is implemented, then ease of operation is improved, but security risks increase due to PIN code requirements
Solution Approach 1:
The communication controller automatically performs connection establishment with external entities without requiring user intervention for PIN code entry. The system self-manages the pairing process by detecting nearby devices and initiating connections autonomously, thereby improving ease of operation while maintaining security through automated authentication protocols
Solution Approach 2:
The system implements feedback mechanisms where the communication controller continuously monitors for nearby external entities and automatically responds by establishing connections. This feedback loop enables seamless automatic reconnection and device discovery while maintaining secure communication channels through automated authentication
3Loss of information
If continuous wireless communication is maintained, then data exchange capability is improved, but energy consumption increases
Solution Approach 1:
Instead of maintaining continuous wireless communication, the system employs periodic communication cycles where the communication controller activates transmission and reception only when data needs to be exchanged. This periodic operation significantly reduces energy consumption while ensuring that data exchange capabilities are maintained whenever needed
Solution Approach 2:
The system ensures continuous data exchange capability through background processes that maintain the communication link readiness without active transmission. Useful communication actions are performed continuously only when necessary, eliminating wasteful energy consumption during idle periods while preserving immediate data exchange readiness
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
This solution enhances user experience by providing seamless data exchange and energy-efficient operation, allowing for pre-brushing coaching and feature configuration, while maintaining low power consumption and improved security through frequency-hopping spread spectrum technology, supporting continuous data streams and voice coding.
Implementation Method 1
improved security through frequency-hopping spread spectrum technology
Data Source
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AI summary
An oral care system (100) is disclosed. The oral care system includes an electric toothbrush (110) having an energy source; an electronic circuit including a microcontroller and one or more electric loads; and at least one sensor for providing a signal indicating a relevant change of an external condition; and a mobile computing device (200) that stores a computer application (210). In response to a relevant change in an external condition, the signal has an energy content allowing the microcontroller to activate a ready mode, the ready mode causing the system to perform at least the following prior to turning the toothbrush (110) on: switching on one or more of the electric loads for a preset period; enabling a wireless communication link between toothbrush (110) and device (200); and exchanging data between toothbrush (110) and device (200) as part of the wireless communication.