Compact Wearable Biosensor Module Design

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Solution Overview

Problem

There is a need for compact, wearable biological sensor modules that can measure various vital signs and properties of the human body without intruding on daily activities, as existing biosensors are often bulky and require clinical settings.

Innovation Solution

A compact sensor module design that includes a battery housing, a package housing with an integrated device package, and interfacing features such as electrodes and optical sensors, which are connected via an interconnect assembly to process biological signatures and transmit data wirelessly, allowing for a small form factor and multi-functional capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If traditional biosensor designs are used, then measurement functionality is achieved, but device size becomes bulky and intrusive

Engineering Contradiction:

Improvesensor module sizeVSAvoidwearability during daily activities

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent implements nesting by placing the package housing containing the integrated device package inside or on the wall of the battery housing. This nested arrangement allows the sensor module to achieve a compact form factor while maintaining all necessary functional components for biosensing, processing, and wireless communication.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent utilizes three-dimensional spatial arrangement by disposing the package housing on the wall of the battery housing rather than in a linear configuration. This dimensional optimization reduces the overall volume of the sensor module while maintaining functionality, making it suitable for wearable applications.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Measurement precision

If multiple functional components are integrated, then measurement precision and functionality improve, but device complexity increases

Engineering Contradiction:

Improvevital signs detection accuracyVSAvoidnumber of components

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple functional components into an integrated device package that includes the processor, wireless communication module, and sensor interface. This consolidation maintains the precision of individual components while reducing overall device complexity and improving integration efficiency.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sensor module is designed with multi-functional capabilities by integrating various biosensing interfaces (optical, electrical, mechanical) within a single package. This universal design allows the device to measure multiple vital signs simultaneously without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Volume of moving object

If compact packaging is implemented, then wearability improves, but manufacturing precision requirements increase

Engineering Contradiction:

Improvesensor module volumeVSAvoidcomponent placement accuracy

Core Design Contradiction:

Volume of moving objectVSManufacturing precision

Solution Approach 1:

The patent segments the sensor module into distinct functional housings (battery housing and package housing) that can be manufactured separately and then assembled. This segmentation allows each component to be manufactured with standard precision tolerances, reducing the overall manufacturing precision requirements while achieving a compact final product.

Inventive Principle:

Principle #1Segmentation

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

Enables users to monitor vital signs like heart rate, blood oxygen, and movement without interfering with daily life, providing a compact, multi-functional, and wireless solution for wearable biosensors.

Implementation Method 1

an interfacing feature coupled with the battery housing and extending transverse to the wall. The interfacing feature can be configured to transduce a biological signature into a signal to be processed by the integrated device package

Methodology Applied

Scientific EffectOptical transduction: Photoelectric Effect

Implementation Method 2

an interconnect assembly that electrically connects the interfacing feature to the integrated device package

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS9750455B2Compact wearable biological sensor modules

Publication Date: 2017.09.05 ANALOG DEVICES INC

AI summary

A sensor module can include a battery housing comprising a battery cavity sized and shaped to receive a battery. The battery cavity can be defined at least in part by a wall to be disposed about at least a portion of a periphery of the battery. A package housing can be disposed on the wall of the battery housing, the package housing smaller than the battery housing. An integrated device package can be disposed in or coupled with the package cavity. The integrated device package can include one or more integrated device dies. An interfacing feature can be coupled with the battery housing and extending transverse to the wall. The interfacing feature can be configured to transduce a biological signature into a signal to be processed by the integrated device package. An interconnect assembly can electrically connect the interfacing feature to the integrated device package.