Single-LED Physiological Monitoring for Compact Optical Sensing
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Solution Overview
Problem
Current physiological monitoring devices are bulky due to the use of multiple light emitting diodes and sensors, which compromises user convenience.
Innovation Solution
A monitoring device that utilizes a single light-emitting diode with light-detection functionality and a control device to alternately generate and receive light signals in different periods, reducing device volume and increasing convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light emitting diodes and light sensors are used for physiological signal monitoring, then measurement precision is improved, but device volume increases
Solution Approach 1:
The patent combines light emitting and light receiving functions into a single light receiving and transmitting device. This device can operate in two modes: emitting light signals during a first period and receiving light signals during a second period. By merging what would traditionally be separate components (light emitting diode and light sensor) into one device that alternates between transmitting and receiving modes, the patent reduces the number of components needed while maintaining the capability to perform both functions necessary for physiological signal monitoring.
Solution Approach 2:
The light receiving and transmitting device operates periodically, alternating between a first period where it generates and transmits light signals and a second period where it receives light signals. This periodic switching allows a single device to perform both transmitting and receiving functions that would traditionally require separate components, thereby reducing device volume while maintaining measurement precision through proper temporal separation of the functions.
2Measurement precision
If multiple light emitting diodes and light sensors are used for physiological signal monitoring, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines light emitting and light receiving functions into a single light receiving and transmitting device. This device can operate in two modes: emitting light signals during a first period and receiving light signals during a second period. By merging what would traditionally be separate components (light emitting diode and light sensor) into one device that alternates between transmitting and receiving modes, the patent reduces the number of components needed while maintaining the capability to perform both functions necessary for physiological signal monitoring.
Solution Approach 2:
The light receiving and transmitting device is designed to perform multiple functions: it can both emit light signals and receive light signals depending on the operational period. This multi-functional device replaces what would traditionally require separate specialized components, thereby reducing overall device complexity while maintaining the precision needed for physiological signal monitoring through its ability to perform both transmitting and receiving operations.
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 effectively decreases device size while maintaining accuracy and convenience by using a single LED for both transmission and reception of light signals, enhancing the monitoring device's usability.
Implementation Method 1
The first light receiving and transmitting device is configured to generate a first light signal to an object and receive a second light signal to generate a first electrical signal
Data Source
AI summary
A monitoring device for physiological signal monitoring includes a first light receiving and transmitting device and a control device. The first light receiving and transmitting device generates a first light signal to an object and receives a second light signal to generate a first electrical signal. The control device controls the first light receiving and transmitting device to generate the first light signal in a first period, and controls the first light receiving and transmitting device to receive the second light signal to generate the first electrical signal in a second period. The invention further includes an operating method for physiological signal monitoring.