Integrated ECG-PPG Sensor Layout for Wearable Space Saving
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Solution Overview
Problem
The separate disposition of ECG electrodes and PPG modules in terminal devices, such as smartwatches, occupies excessive space, hindering miniaturization and complicating health detection processes.
Innovation Solution
An integrated design of ECG electrodes and PPG modules, utilizing a support component with grooves and windows for optical transmitters and receivers, and electrical connections through flexible printed circuits (FPCs) to minimize space usage and simplify health parameter detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ECG electrode and PPG module are separately disposed, then each component can be independently designed and manufactured, but the space occupied by these components becomes excessively large
Solution Approach 1:
The patent combines the ECG electrode and PPG module into a single integrated detection apparatus. The support component serves as a common platform that holds both the optical transmitter and receiver for PPG detection, while also providing electrical connection pathways for ECG electrode detection. This merging eliminates the need for separate component layouts, thereby reducing the total space occupied while maintaining independent design capabilities for each functional module.
Solution Approach 2:
The support component performs multiple functions: it provides structural support for the optical components, creates accommodating cavities for the PPG module, provides light transmission pathways through its windows, and serves as an electrical connection substrate for the ECG electrode. By making the support component multi-functional, the patent eliminates the need for separate structural elements for each function, thereby reducing overall device space.
2Adaptability or versatility
If ECG electrode and PPG module are separately disposed, then each module can be optimized independently, but the structure design becomes complex and miniaturization is hindered
Solution Approach 1:
The integrated detection apparatus is segmented into distinct functional zones on the support component: optical transmission zones with windows for PPG, electrical connection zones for ECG, and accommodating cavities for the PPG module. This segmentation allows each functional area to be independently optimized while maintaining a unified, simplified overall structure that avoids the complexity of separate component assemblies.
3Reliability
If separate disposition is used, then component independence is maintained, but health detection operations become complicated
Solution Approach 1:
The detection apparatus merges ECG and PPG detection functions into a single integrated unit that performs both health measurements simultaneously. The support component provides unified structural support and electrical connections for both detection modes, simplifying the operation to a single contact point while maintaining the reliability of independent component functionality through modular design within the integration.
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 design reduces space occupation, simplifies health detection operations, and enhances the accuracy and practicability of health parameter measurements in wearable devices.
Implementation Method 1
an optical transmitter...disposed in the first accommodating cavity...a first light exit window...provided on a top end surface of the support component, the first groove communicates with the first light exit window
Implementation Method 2
an optical receiver...disposed in the second accommodating cavity...a second groove communicates with the first light entry window
Implementation Method 3
A first electrode is disposed on the FPC, and the first electrode is electrically connected to the support component
Data Source
AI summary
A detection apparatus includes: a support component which comprises a base and a first mechanical part, a first groove and a second groove are provided on the base, a second light exit window and a second light entry window are provided on the first mechanical part, the first groove communicates with the second light exit window, and the second groove communicates with the second light entry window; the base forms a first accommodating cavity and a second accommodating cavity with the FPC, the first accommodating cavity corresponds to the first groove, and the second accommodating cavity corresponds to the second groove; an optical transmitter is disposed in the first accommodating cavity, and an optical receiver is disposed in the second accommodating cavity; and a first electrode is disposed on the FPC, and the first electrode is electrically connected to the first mechanical part through the base.