Proceedings ArticleDOI
Ratiometric Artefact Reduction in Low Power, Discrete-Time, Reflective Photoplethysmography
James A.C. Patterson,Guang-Zhong Yang +1 more
- pp 174-179
Reads0
Chats0
TLDR
The performance of a ratiometric artefact reduction technique is tested with both simulated multiplicative noise sources, as well as real motion artefacts to best determine where the limitations of the system lie.Abstract:
This paper investigates the feasibility of a ratio metric approach to compensating for ambient light and motion artefacts in a reflective photoplethysmography (PPG) sensor suitable for wearable applications. A low-power, discrete-time pulse-oximeter development platform is used to capture both infra-red (IR) and red photoplethysmograms, as well as the ambient light level, such that the data used for analysis has noise levels representative of what a true body sensor network (BSN) device would experience. The performance of a ratiometric artefact reduction technique is tested with both simulated multiplicative noise sources, as well as real motion artefacts to best determine where the limitations of the system lie.read more
Citations
More filters
Dissertation
Fall detectors for people with dementia
TL;DR: It is argued that wearable fall detectors should utilise physiological data to complement kinematic data, and it is concluded that the pulse provides a source of data and it would be possible to build the conceptual fall detector utilising this technique.
DissertationDOI
A photoplethysmography system optimised for pervasive cardiac monitoring
TL;DR: This thesis presents a photoplethysmography based sensor system that has been developed specifically for the requirements of a pervasive healthcare monitoring system and is implemented on a single PCB using only commercial-off-the-shelf components and consumes less than 7mW of power.
Método alternativo de control de intensidad lumínica para pulsioximetría en tiempo real
TL;DR: In this paper, an alternative method of pulse width modulation was proposed for controlling the mean light intensity level, whose principle is a pulse width nodulation of the current applied to the LEDs in the emitting stage.
Proceedings ArticleDOI
Sensorex: The Challenges for Engineering Implementation of Low-Cost Non-Invasive Pulse Oximeter Applicable to Diverse Patient Population
Daria Lipchak,Alexey Chupov +1 more
TL;DR: In this paper, the SENSOREX is at the final stage of Russian Federation state registration as a medical device for professional and home care usage, which is suitable for different categories of patients and uses with Nellcor -compatible fingertip sensors of various way of attachments.
References
More filters
Journal ArticleDOI
Photoplethysmography and its application in clinical physiological measurement.
TL;DR: Photoplethysmography is a simple and low-cost optical technique that can be used to detect blood volume changes in the microvascular bed of tissue and is often used non-invasively to make measurements at the skin surface.
Journal ArticleDOI
Motion artifact reduction in photoplethysmography using independent component analysis
B.S. Kim,Sun Kook Yoo +1 more
TL;DR: The motion artifacts were reduced by exploiting the quasi-periodicity of the PPG signal and the independence between the P PG and the motion artifact signals by the combination of independent component analysis and block interleaving with low-pass filtering.
Journal ArticleDOI
Artifact-resistant power-efficient design of finger-ring plethysmographic sensors
TL;DR: benchmarking tests with FDA-approved PPG and electrocardiogram reveal that the ring sensor is comparable to those devices in detecting beat-to-beat pulsation despite disturbances, and designed and built based on the power budget analysis and the artifact-resistive attachment method.
Journal ArticleDOI
Pulse oximetry: its invention, theory, and future.
TL;DR: P pulse oximetry to establish a basis for improving pulse oximeter performance and for expanding application of the pulse spectrophotometry principle to other noninvasive measurements and a vision of pulse oxIMetry in the near future is sketched.