Biological Data Sensor with Segmented Wireless Charging
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Solution Overview
Problem
Wearable smart devices that detect biological data, such as pulse, often experience inaccuracies due to movement, which affects the sensing results.
Innovation Solution
A biological data sensor comprising a flexible printed circuit sensing module with light emitting units and a rechargeable battery attached to the skin, paired with a wearable charging module that wirelessly transmits power and data, utilizing organic photo sensors and transmitters to provide long-term accurate biological data sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wearable smart devices are used to detect biological data, then convenience and portability are improved, but measurement accuracy deteriorates due to movement
Solution Approach 1:
The system is divided into two independent modules: a sensing module that remains stationary on the skin and a charging module that moves with the user. This segmentation allows the sensing module to maintain accurate contact with the skin for reliable biological data measurement, while the charging module provides portable wireless charging and data transmission capabilities without interfering with measurement accuracy.
2Duration of action of moving object
If continuous biological data sensing is implemented, then data duration is improved, but energy consumption increases
Solution Approach 1:
The rechargeable battery in the sensing module enables continuous biological data sensing by providing uninterrupted power supply. The battery can be recharged wirelessly through the charging module, ensuring the sensing operation continues without interruption. This continuous power availability extends the sensing duration significantly while maintaining consistent measurement quality.
3Ease of operation
If wireless power transmission is added to the sensing module, then ease of charging is improved, but device complexity increases
Solution Approach 1:
The wireless charging and data transmission functions are extracted into a separate charging module that communicates with the sensing module through wireless communication. This extraction allows the sensing module to gain wireless charging capability without incorporating the complex charging circuitry directly, thereby reducing the sensing module's complexity while still providing convenient wireless power transmission.
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 sensor achieves long-term, accurate biological data acquisition, including pulse measurement, by minimizing the impact of movement through wireless power transmission and data retrieval, using adaptive light colors and photoplethysmography for enhanced accuracy.
Implementation Method 1
The data retrieving unit retrieves the biological data by photoplethysmography
Implementation Method 2
The first sensing light is transmitted onto the user's skin and reflected from the user's skin as the second detecting light
Implementation Method 3
The receiving unit comprises an organic photo sensor (OPS)
Implementation Method 4
The rechargeable battery is electrically connected to the light emitting units and the sensing unit, and the rechargeable battery provides power to the light emitting units and the sensing unit
Implementation Method 5
The first transmitter is electrically connected to the charger, obtains power from the charger, wirelessly transmits the power to the rechargeable battery of the sensing module, and receives the biological data from the sensing module
Data Source
AI summary
The present invention is related to a biological data sensor for measuring biological data from a user. The biological data sensor comprises a sensing module and a wearable charging module. The sensing module is formed by flexible printed circuit (FPC) and attached to the user's skin. The sensing module includes light emitting units, at least one sensing unit, and a rechargeable battery. The light emitting unit emits a first sensing light onto the user's skin. The first sensing light is transmitted onto the user's skin and reflected from the user's skin as a second detecting light. The sensing unit receives the second sensing light and outputs the biological data. The rechargeable battery is electrically connected to the light emitting units and the sensing unit, and the rechargeable battery provides power to the light emitting units and the sensing unit. The wearable charging module is worn on a part of the user adjacent to the sensing module. The wearable charging module includes a charger and a first transmitter. The first transmitter is electrically connected to the charger, obtains power from the charger, wirelessly transmits the power to the rechargeable battery of the sensing module, and receives the biological data from the sensing module.