LED power reduction trade-offs for ambulatory pulse oximetry

@article{Pelaez2007LEDPR,
  title={LED power reduction trade-offs for ambulatory pulse oximetry},
  author={Eduardo Aguilar Pelaez and E.R. Villegas},
  journal={2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society},
  year={2007},
  pages={2296-2299}
}
  • E. A. Pelaez, E.R. Villegas
  • Published 22 October 2007
  • Physics
  • 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
The development of ambulatory arterial pulse oximetry is key to longer term monitoring and treatment of cardiovascular and respiratory conditions. The investigation presented in this paper will assist the designer of an ambulatory pulse oximetry monitor in minimizing the overall LED power consumption (PLED,TOT ) levels by analyzing the lowest achievable limit as constrained by the optical components, circuitry implementation and final SpO2 reading accuracy required. LED duty cycle (DLED… 

Figures from this paper

Adaptive Pulse Width Control and Sampling for Low Power Pulse Oximetry

  • S. GubbiB. Amrutur
  • Environmental Science
    IEEE Transactions on Biomedical Circuits and Systems
  • 2015
TLDR
A power optimized photoplethysmographic sensor interface to sense arterial oxygen saturation, a technique to dynamically trade off SNR for power during sensor operation, and a simple algorithm to choose when to acquire samples in photopletysmography are presented.

Trade-offs for low power integrated pulse oximeters

The paper presents detailed trade-offs encountered in the design of low-power integrated pulse oximeters(PO). The significance and interdependence of parameters such as the switching frequency, duty

A wireless pulse oximetry system with active noise cancellation of motion artifacts

TLDR
A novel adaptive serial search acquisition, which updates detection threshold adaptively, is utilized to optimize power efficiency and noise cancellation of a system composed of pulse oximetry and low complexity baseband transceiver.

Towards a Continuous Non-Invasive Cuffless Blood Pressure Monitoring System Using PPG: Systems and Circuits Review

TLDR
To enhance the BP system performance, both the optimization of the integrated PPG receiver design and the reduction of the LED driver power consumption are introduced and useful design considerations are proposed to improve the PPG-based BP system accuracy.

Active noise cancellation of motion artifacts in pulse oximetry using isobestic wavelength light source

  • Chun-Yen WangK. Tang
  • Engineering
    2011 IEEE International Symposium of Circuits and Systems (ISCAS)
  • 2011
TLDR
A method for reducing motion artifacts from corrupted PPG signals by applying a normalized least mean squares (NLMS) algorithm, using an isobestic point wavelength (800nm) as a noise reference signal for the adaptive filter.

A Novel Design Methodology for Portable Oximetry Devices in Biomedical Applications with High Compact Analog Front End Block

TLDR
A novel methodology that enables a systematic approach for evaluating high compact signal processing designs is proposed and discussed and an integrated pulse oximeter sensor is embedded in a custom board and used to test the methodology concept.

Experimental low cost reflective type oximeter for wearable health systems

A Sub-mW Fully-Integrated Pulse Oximeter Front-End

TLDR
This paper presents the implementation of the first fully integrated pulse oximeter front-end with a power consumption lower than 1 mW, enabled by system- and block-level noise optimisation and an analogue feedback loop that enables fast and accurate regulation of the detected photocurrent level.

Building an Arterial Photoplethysmogram for Measurement of Heart Beats per Minute (bpm)

TLDR
This poster introduces you to the novel noninvasive technique to measure the heart beats and pulses per minute using a photodiode and a microcontroller assembled in order to calculate the difference between the absorption of infrared and red light to compute the optimal percentage of oxygen saturation in the patient’s body.

Power Optimization Using Embedded Automatic Gain Control Algorithm with Photoplethysmography Signal Quality Classification

TLDR
This paper presents the design and implementation of an Automatic Gain Control (AGC) embedded algorithm for photoplethysmographic (PPG) sensors that is able to save more than 50% LED power on average without compromising PPG signal quality needed for the VSM algorithms.

References

SHOWING 1-9 OF 9 REFERENCES

Implementation and validation of a power-efficient, high-speed modulation design for wireless oxygen saturation measurement systems

  • P. ShaltisS. RheeH. Asada
  • Physics
    Proceedings of the IEEE 28th Annual Northeast Bioengineering Conference (IEEE Cat. No.02CH37342)
  • 2002
This paper describes the implementation and initial validation results of a novel power-efficient, high-speed modulation design for wearable oxygen saturation sensor systems. The research presented

Mobile monitoring with wearable photoplethysmographic biosensors.

TLDR
The ring sensor is an ambulatory, telemetric, continuous health-monitoring device that combines miniaturized data acquisition features with advanced photoplethysmographic techniques to acquire data related to the patient's cardiovascular state using a method far superior to existing fingertip PPG sensors.

Signal quality and power consumption of a new prototype reflectance pulse oximeter sensor

  • P. BrancheY. Mendelson
  • Engineering
    Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.
  • 2005
Reduced power consumption without compromising signal quality is a key requirement in optimizing the design of wearable telesensors. This paper investigates the potential advantage gained by

Artifact-resistant power-efficient design of finger-ring plethysmographic sensors

TLDR
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.

Pulse oximetry: Analysis of theory, technology, and practice

TLDR
The pulse oximetry technique, by focusing on the pulsatile arterial component, neatly circumvented many of the problems of the classic nonpulse arterial approach and owes a good measure of its success to the technologic advances in light emission and detection and the ready availability of microcomputers and their software.

Oximetry feedback flow control simulation for oxygen therapy

TLDR
Simulation findings indicate an optimized matching between oxygen supply and demand, maintaining SpO2 above threshold to improve therapeutic efficacy compared to standard LTOT.

Nocturnal Pulse Oximetry as an Abbreviated Testing Modality for Pediatric Obstructive Sleep Apnea

TLDR
Oximetry could be the definitive diagnostic test for straightforward OSA attributable to adenotonsillar hypertrophy in children older than 12 months of age, or quickly and inexpensively identify children with a history suggesting sleep-disordered breathing who would require PSG to elucidate the type and severity.

Low noise current-mode CMOS transimpedance amplifier for giga-bit optical communication

  • S. ParkC. Toumazou
  • Engineering, Physics
    ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187)
  • 1998
A novel current-mode CMOS transimpedance amplifier is described. The design uses a common-gate regulated cascode configuration providing low input impedance and low input current noise. HSPICE

Low power silicon circuit design for a non-invasive and mechanically non intrusive ambulatory PTT monitor and BP estimator

  • Electrical and Electronic Engineering Master Thesis, Imperial College London,
  • 2006