Wearable Photoplethysmographic Sensors—Past and Present

  title={Wearable Photoplethysmographic Sensors—Past and Present},
  author={Toshiyo Tamura and Yuka Maeda and Masaki Sekine and Masaki Yoshida},
Photoplethysmography (PPG) technology has been used to develop small, wearable, pulse rate sensors. These devices, consisting of infrared light-emitting diodes (LEDs) and photodetectors, offer a simple, reliable, low-cost means of monitoring the pulse rate noninvasively. Recent advances in optical technology have facilitated the use of high-intensity green LEDs for PPG, increasing the adoption of this measurement technique. In this review, we briefly present the history of PPG and recent… 

Figures and Tables from this paper

Wearable Photoplethysmographic Sensor Based on Different LED Light Intensities

This work proposes a technique to cancel motion artifacts by using two reflective pulse signals from a single green LED, switched by a microcontroller between high and low light intensities.

Current progress of photoplethysmography and SPO2 for health monitoring

  • T. Tamura
  • Medicine
    Biomedical engineering letters
  • 2019
The principle issues and clinical applications of PPG for monitoring oxygen saturation are reviewed and wearable unobtrusive PPG monitors are commercially available.

Silicon photomultipliers with embedded optical filters for wearable healthcare applications

Sensors and wearables that monitor physiological data in fitness and healthcare applications are becoming more and more popular. More particularly the use of high signal-to-noise ratio Silicon

A Review of Wearable Multi-Wavelength Photoplethysmography

A novel and comprehensive state-of-the-art review of wearable multi-wavelength PPG sensing, encompassing motion artifact reduction and estimation of physiological parameters.

Optimizing performance of reflectance-based organic Photoplethysmogram (PPG) sensor

A low cost, organic based sensor is developed to detect the heart rate with wireless enabled data monitoring and displayed promising results with 1.5 % error in theheart rate measurement compared to the commercial reference.

Photonic sensor design evaluation for measuring the photoplethysmogram

A simple cuffless and wearable PPG sensor that is validated by measuring the blood pressure and compared the result with an oscillometric device and the combination of image processing and signal processing technology is used to extract the PPG signal out of the P PG sensor.

A review on wearable photoplethysmography sensors and their potential future applications in health care

Some of the current developments and challenges of wearable PPG-based monitoring technologies are considered and some of the potential applications of this technology in clinical settings are discussed.

Photoplethysmography Sensors Concept and Advancements: A Review

A comprehensive review of PPG devices is done reviewing the most prominent developments in this field and concludes that the PPG technology is indeed very promising and an upcoming concept which, with a few improvements can prove to be a boon to the health care industry.

Effective PPG sensor placement for reflected red and green light, and infrared wristband-type photoplethysmography

Experiments show that all three reflected light PPG sensors generate good quality of PPG signals on measurement sites 4 and 11 (around the distal of Radius of left hand) in test subjects.

A Low-Power Photoplethysmography Sensor using Correlated Double Sampling and Reference Readout Circuit

A signal-to-noise ratio improvement method for CDS by using a PPG sensor with current integration circuits that enables SNR improvement and measurements to be taken from any part of the body.



Investigating a smartphone imaging unit for photoplethysmography

Reflection photoplethysmographic imaging using this technology on the index finger of a male volunteer during rest and immediately after performing a short run is demonstrated, encouraging, especially in the area of personal and home-based care applications.

The Advantages of Wearable Green Reflected Photoplethysmography

Reflected green light PPG can be useful for pulse rate monitoring because it is less influenced by the tissue and vein region, and the main reason for the reduced DC components was speculated to be the increased blood flow at the vascular bed.

A Flexible, Low Noise Reflective PPG Sensor Platform for Ear-Worn Heart Rate Monitoring

This paper presents a novel ear-worn reflective photoplethysmography (PPG) sensor that addresses the mechanical complexities of coupling the sensor to the surface of the skin and a detection circuit

A Novel Headset with a Transmissive PPG Sensor for Heart Rate Measurement

In this paper, a headset with an ear-clip type, transmissive PPG (Photoplethysmography) sensor is presented which allows a continuous and realtime monitoring of the heart rate (HR) whilst listening

Photoplethysmography and its application in clinical physiological measurement

The PPG technology has been used in a wide range of commercially available medical devices for measuring oxygen saturation, blood pressure and cardiac output, assessing autonomic function and also detecting peripheral vascular disease.

Development of a wristwatch-type PPG array sensor module

This work proposes a novel PPG array sensor module with a wristwatch-type design that measures the PPG signal from the radial artery and the ulnar artery of the wrist, whereas previous methods obtained it from capillaries of the skin.

Advancements in Noncontact, Multiparameter Physiological Measurements Using a Webcam

We present a simple, low-cost method for measuring multiple physiological parameters using a basic webcam. By applying independent component analysis on the color channels in video recordings, we

Feasibility of Imaging Photoplethysmography

The outcome explicitly reveals the imaging PPG is able to detect blood perfusion in a illuminated tissue and indicates the vascular distribution and the blood cell response to individual wavelength LED.

A Motion-Tolerant Adaptive Algorithm for Wearable Photoplethysmographic Biosensors

A novel real-time adaptive algorithm is proposed for accurate motion-tolerant extraction of heart rate and pulse oximeter oxygen saturation from wearable photoplethysmographic (PPG) biosensors and provides noise-free PPG waveforms for further feature extraction.