Integrated Optical Physiological Sensor for Compact Multimodal Sensing
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Solution Overview
Problem
Conventional physiological monitoring devices face challenges in achieving miniaturization, multifunctionality, and high integration due to modularized designs of light emitters and sensors, which fail to meet design requirements.
Innovation Solution
An optical physiological sensor with a module substrate, light emitting and detecting modules, and a conductive path, integrated on a single substrate with a blocking wall to prevent signal interference, allowing for combined optical and contact sensing functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light emitter and light sensor are modularized separately, then signal interference is prevented, but device size and complexity increase
Solution Approach 1:
The patent merges the light emitter and light sensor onto a single substrate, eliminating the need for separate modular packaging. The substrate integrates both components with their respective electrical connections, reducing overall device complexity while maintaining functional separation through on-substrate positioning.
Solution Approach 2:
The substrate is divided into distinct functional regions: a first region for the light emitter, a second region for the light sensor, and a third region for electrode groups. This segmentation allows each component to be independently positioned and connected while preventing signal interference through spatial separation on the same substrate.
2Reliability
If the light emitter and light sensor are mounted on separate substrates, then signal interference is prevented, but manufacturing complexity and integration difficulty increase
Solution Approach 1:
The patent combines the light emitter, light sensor, and electrode groups onto a single substrate, eliminating the need for separate substrate mounting and reducing manufacturing steps. All components are integrated during the same manufacturing process, simplifying production.
3Reliability
If modularized design is used for light emitter and sensor, then signal interference is prevented, but miniaturization requirements are not met
Solution Approach 1:
The patent merges all functional components onto a single compact substrate, significantly reducing the overall device volume compared to separate modular packages. The integrated design allows for smaller form factor while maintaining functional separation for interference prevention.
Solution Approach 2:
The patent utilizes three-dimensional positioning on the substrate, with the light emitter in a first region, light sensor in a second region, and electrode groups in a third region. This spatial arrangement in multiple dimensions allows compact integration while maintaining adequate separation to prevent signal interference.
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 solution enables a small footprint and high flexibility, enabling combined optical and contact sensing functions while meeting design requirements for miniaturization and integration.
Implementation Method 1
The light emitting module is disposed on the emitting area, and includes at least one light emitting unit and a first packaging layer that covers the at least one light emitting unit
Implementation Method 2
The detecting module is disposed on the receiving area, and includes at least one detecting unit and a second packaging layer that covers the at least one detecting unit
Implementation Method 3
The conductive path is configured to provide electrical conduction between the first contact electrode and the second contact electrode
Data Source
AI summary
An optical physiological sensor and a health monitoring device using the same are provided. The optical physiological sensor includes a module substrate, a light emitting module, and a detecting module. The module substrate includes a substrate, an electrode group, and a conductive path. The substrate has an emitting area, a receiving area, and an organism contact area between the emitting area and the receiving area. The electrode group is disposed on the organism contact area, and includes a first contact electrode, a second contact electrode, and a grounding electrode. The conductive path is configured to provide electrical conduction between the first contact electrode and the second contact electrode. The light emitting module is disposed on the emitting area. The detecting module is disposed on the receiving area.