Low cost ceramic sensors for biomedical use: a revolution in transcutaneous blood oxygen monitoring?

1994 ◽  
Vol 18 (1-3) ◽  
pp. 171-174 ◽  
Author(s):  
Gábor Harsányi ◽  
István Péteri ◽  
István Deák
Keyword(s):  
Low Cost ◽  
Blood Oxygen ◽  
Oxygen Monitoring

SpO2 Detecting Applied on Android Platform

2013 ◽  
Vol 303-306 ◽  
pp. 659-662
Author(s):  
Zhong Shun Hu ◽  
Shu Yu Li ◽  
De Yu Li
Keyword(s):  
Low Cost ◽  
Condition Index ◽  
Pulse Frequency ◽  
Blood Oxygen ◽  
Application Development ◽  
Software Application ◽  
Daily Monitoring ◽  
Sensor Module ◽  
Android Platform ◽  
Oxygen Monitoring

In this paper, we put forward a design of oxygenation sensor module, along with a software application development running on Android operation system to combine the sensor module with the Android terminal. A practicable system for blood oxygen monitoring is developed. This system contains two major parts. The first part is the design of oxygenation sensor module. Algorithms about dark current removing and pulse frequency extraction are discussed. Moreover, module calibration is conducted, which is then used to compare the precision of linear and quadratic equations for SpO2 computation. The second part is about the oxygenation monitoring software design and development based on Android platform. The general protocol Blood Condition Index (BCI) transport protocol in hospital monitor is studied and applied. Test results demonstrate the effectiveness of using SpO2 sensor module for blood oxygen measurement. Since ASubscript textSubscript textndroid has a high penetration in our daily life, this work will provide a useful tool for convenient and low cost daily monitoring of SpO2 at home.

Design and Implementation of the Health Examination Robot Control System Architecture

2014 ◽  
Vol 678 ◽  
pp. 352-359
Author(s):  
Dun Hua Huang ◽  
Hai Jun Zhou ◽  
Jian Cui
Keyword(s):  
Robot Control ◽  
Historical Data ◽  
Low Cost ◽  
Health Examination ◽  
Blood Oxygen ◽  
Control Module ◽  
Design And Implementation ◽  
Data Query ◽  
Control System Architecture ◽  
Electrocardiogram Ecg

The paper research a health examination robot, which set height, weight, blood pressure, blood glucose, cholesterol, blood oxygen, electrocardiogram (ECG), energy check in one certain. In the design, adopt 32 bit embedded ARM micro controller NuMicro NUC140, RFID card reader, oxygen check control module and ECG check control module, taking into account the system connection and RFID identification, parameters of historical data query and ECG check process. Experimental data show that system functions are realized and to promote low-cost medical treatment.

An innovative approach for blood oxygen monitoring by implantable diodes – first in vitro conclusions

2007 ◽  
Vol 55 (S 1) ◽  
Author(s):  
C Heilmann ◽  
J Fiala ◽  
S Reichelt ◽  
E Just ◽  
K Förster ◽  
...  
Keyword(s):  
Innovative Approach ◽  
Blood Oxygen ◽  
Oxygen Monitoring

scholarly journals Self-Powered Flexible Blood Oxygen Monitoring System Based on a Triboelectric Nanogenerator

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 778 ◽  
Author(s):  
Huamin Chen ◽  
Yun Xu ◽  
Jiushuang Zhang ◽  
Weitong Wu ◽  
Guofeng Song
Keyword(s):  
Monitoring System ◽  
Sacrificial Layer ◽  
Triboelectric Nanogenerator ◽  
Blood Oxygen ◽  
Wearable Electronics ◽  
Output Performance ◽  
Supply Problem ◽  
Self Powered ◽  
Oxygen Monitoring ◽  
Functional Components

Flexible optoelectronics based on inorganic functional components have attracted worldwide attention due to their inherent advantages. However, the power supply problem presents a significant obstacle to the commercialization of wearable optoelectronics. Triboelectric nanogenerator (TENG) technology has the potential to realize self-powered applications compared to the conventional charging technologies. Herein, a flexible self-powered blood oxygen monitoring system based on TENG was first demonstrated. The flexibility of the TENG is mainly due to the inherent properties of polydimethylsiloxane (PDMS) and the continuously undulating surface of crumpled gold (Au) and the rough surface on the electrode and PDMS effectively increased the output performance. The output voltage, output current density, and power density were 75.3 V, 7.4 μA, and 0.2 mW/cm2, respectively. By etching the sacrificial layer, we then derived a flexible blood oxygen and pulse detector without any obvious performance degradation. Powered by the TENG, the detector is mounted onto the thumbnail, from where it detects a stable photoplethysmography (PPG) signal which can be used to calculate the oxyhemoglobin saturation and pulse rate. This self-powered system provides a new way to sustainably monitor physiological parameters, which paves the way for development of wearable electronics and battery-free systems.

Continuous Wavelet Analysis of the Breathing Sounds of Obstructive Sleep Apnea Patients and Normal Subjects during Wakefulness

2014 ◽  
Vol 622 ◽  
pp. 45-50 ◽  
Author(s):  
R. Premkumar ◽  
Chokkalingam Arun ◽  
Ramakrishnan Sai Divya
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Low Cost ◽  
Upper Airway ◽  
Normal Subjects ◽  
Continuous Wavelet ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Non Invasive ◽  
Obstructive Sleep

Obstructive sleep apnea (OSA) is the most common type of sleep apnea and is caused by obstruction of the upper airway. Its distinctive feature is occurrence of repetitive pauses in breathing during sleep, due to intermittent relaxing and blocking of the patients airway by the throat muscles. Continuous such actions might narrow down the throat or may completely block it. These actions cause more difference in breathing sounds and are usually associated with a reduction in blood oxygen saturation. The breathing sounds of the patients with and without obstructive sleep apnea were recorded using a non-invasive, low-cost sensor during wakefulness in supine (lying) position and Continuous wavelet 1-D analysis was performed on those signals.

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Chromic Acid Etching of Polyethylene

1973 ◽  
Vol 31 ◽  
pp. 72-73
Author(s):  
J. D. Muzzy ◽  
R. D. Hester ◽  
J. L. Hubbard
Keyword(s):  
Chromic Acid ◽  
Low Cost ◽  
Acid Etching ◽  
Crystalline Morphology ◽  
Bulk Specimen ◽  
Morphological Studies ◽  
Perfect Form ◽  
Molecular Length ◽  
Lamellar Texture ◽  
Cost Studies

Polyethylene is one of the most important plastics produced today because of its good physical properties, ease of fabrication and low cost. Studies to improve the properties of polyethylene are leading to an understanding of its crystalline morphology. Polyethylene crystallized by evaporation from dilute solutions consists of thin crystals called lamellae. The polyethylene molecules are parallel to the thickness of the lamellae and are folded since the thickness of the lamellae is much less than the molecular length. This lamellar texture persists in less perfect form in polyethylene crystallized from the melt.Morphological studies of melt crystallized polyethylene have been limited due to the difficulty of isolating the microstructure from the bulk specimen without destroying or deforming it.

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