A Contact-Free Monitor of Human’S Vital Signs

2011 ◽  
Vol 138-139 ◽  
pp. 1063-1066
Author(s):  
Guo Hua Lu ◽  
Fang Fang ◽  
Xi Jing Jing ◽  
Xiao Yu ◽  
Jian Qi Wang
Keyword(s):  
Heart Rate ◽  
Vital Signs ◽  
The Body ◽  
Health State ◽  
Breathing Rate ◽  
Heart Rates ◽  
Microwave Sensor ◽  
Measure Heart Rate ◽  
Contact Free ◽  
Rate Comparison

Heart rates and breathing rates are widely used to assess the health state of human in clinic. Tranditional method uses eletrodes or sensors touching the body to measure electrocardiography (ECG) and respiratory signals.A vital signs monitor via a micorwave sensor was disscused to contact-free measurement of the heart rate and breathing rate. Comparison of vital signs derived from the microwave sensor and tranditional contact monitor demonstrated that there were no significant differences between each other, which suggested the contact-free vital signs monitor may prove a practical alternative method to measure heart rate and breathing rate.

A Microwave Sensor for Contact-Free Measurement of Human Heart Rate

2012 ◽  
Vol 500 ◽  
pp. 325-329
Author(s):  
Guo Hua Lu ◽  
Fang Yang ◽  
Xi Jing Jing ◽  
Xiao Yu ◽  
Hua Wang ◽  
...  
Keyword(s):  
Heart Rate ◽  
Human Body ◽  
Human Heart ◽  
The Body ◽  
Health State ◽  
Rate Measurement ◽  
Remote Sense ◽  
Microwave Sensor ◽  
Contact Free ◽  
Body Comparison

Measures of heart rate are widely used to assess the health state of human in clinic. Tranditional method uses eletrodes touching the body to monitor electrocardiography (ECG) .A micorwave sensor was disscused to remote sense the heart rate without touching human body. Comparison of heart rate derived from the microwave sensor and ECG demonstrated that there were no significant differences, which suggested this sensor may prove a practical alternative to ECG for heart rate measurement.

Changes in Blood Pressure, Heart Rate and Breathing Rate During Moderate Swimming Activity in Rainbow Trout

1967 ◽  
Vol 46 (2) ◽  
pp. 307-315 ◽  
Author(s):  
E. DON STEVENS ◽  
D. J. RANDALL
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Rainbow Trout ◽  
Venous Blood ◽  
The Body ◽  
Swimming Activity ◽  
Breathing Rate ◽  
Blood Pressures ◽  
Ventral Aorta ◽  
Pressure Changes

1. Changes in blood pressure in the dorsal aorta, ventral aorta and subintestinal vein, as well as changes in heart rate and breathing rate during moderate swimming activity in the rainbow trout are reported. 2. Blood pressures both afferent and efferent to the gills increased during swimming and then returned to normal levels within 30 min. after exercise. 3. Venous blood pressure was characterized by periodic increases during swimming. The pressure changes were not in phase with the body movements. 4. Although total venous return to the heart increased during swimming, a decreased blood flow was recorded in the subintestinal vein. 5. Heart rate and breathing rate increased during swimming and then decreased when swimming ceased. 6. Some possible mechanisms regulating heart and breathing rates are discussed.

scholarly journals Measurement of Heart Rate, and Body Temperature Based on Android Platform

2020 ◽  
Vol 2 (1) ◽  
pp. 26-33
Author(s):  
Musyahadah Arum Pertiwi ◽  
I Dewa Gede Hari Wisana ◽  
Triwiyanto Triwiyanto ◽  
Sasivimon Sukaphat
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Temperature Sensor ◽  
Liquid Crystal Display ◽  
Vital Signs ◽  
Health Condition ◽  
The Body ◽  
Digital Data ◽  
Mental Condition ◽  
Measurement Results

Heart rate and body temperature can be used to determine the vital signs of humans. Heart rate and body temperature are two important parameters used by paramedics to determine the physical health condition and mental condition of a person. Because if your heart rate or body temperature is not normal then you need to make further efforts to avoid things that are not desirable. The purpose of this study is to design a heart rate and body temperature. In this study, the heart rate is detected using a finger sensor which placed on the finger. This sensor detects the heart rate pulses through infrared absorption of blood hemoglobin, and measure the body temperature using a DS18B20 temperature sensor which is placed axially. DS18B20 sensor works by converting temperature into digital data. The measurement results will be displayed on liquid crystal display (LCD) 2 x 16 and the data will be sent to android mobile phone via Bluetooth.  After the comparision beetwen the desain and the standart, the error is 0.46% for beats per minutes (BPM) parameters and 0.31 degrees Celsius for temperature parameters.

scholarly journals Distribution of Pediatric Vital Signs in the Emergency Department: A Nationwide Study

Children ◽  
2020 ◽  
Vol 7 (8) ◽  
pp. 89
Author(s):  
Woori Bae ◽  
Kyunghoon Kim ◽  
Bongjin Lee
Keyword(s):  
Emergency Department ◽  
Heart Rate ◽  
Body Temperature ◽  
Respiratory Rate ◽  
Life Support ◽  
Vital Signs ◽  
Reference Ranges ◽  
Normal Body Temperature ◽  
Heart Rates ◽  
Normal Body

To effectively use vital signs as indicators in children, the magnitude of deviation from expected vital sign distribution should be determined. The purpose of this study is to derive age-specific centile charts for the heart rate and respiratory rate of the children who visited the emergency department. This study used the Korea’s National Emergency Department Information System dataset. Patients aged <16 years visiting the emergency department between 1 January 2016 and 31 December 2017 were included. Heart rate and respiratory rate centile charts were derived from the population with normal body temperature (36 to <38 °C). Of 1,901,816 data points retrieved from the database, 1,454,372 sets of heart rates and 1,458,791 sets of respiratory rates were used to derive centile charts. Age-specific centile charts and curves of heart rates and respiratory rates showed a decline in heart rate and respiratory rate from birth to early adolescence. There were substantial discrepancies in the reference ranges of Advanced Paediatric Life Support and Pediatric Advanced Life Support guidelines. Age-based heart rate and respiratory rate centile charts at normal body temperature, derived from children visiting emergency departments, serve as new evidence-based data and can be used in follow-up studies to improve clinical care for children.

scholarly journals Heart Rate Measurement based on Color Signal Extraction

2019 ◽  
Vol 8 (10) ◽  
pp. 1990-1993
Keyword(s):  
Heart Rate ◽  
Pulse Rate ◽  
Vital Signs ◽  
The Body ◽  
Signal Extraction ◽  
Rate Measurement ◽  
Heart Rate Measurement ◽  
Blue Channel ◽  
Color Channels

Photoplethysmography measures vital signs through to extraction of signals from the body. The paper explains the technique for extraction of pulse rate from the videos for three color channels namely; red, green and blue. The DMIMS database is used for experimentation which consists of total 720 videos out of which 25 videos are used for analysis. The results presented in this paper depict that our algorithm works best for blue channel followed by green and then red channel. The main focus of paper is to extract pulse rate from the recorded video and compare the output for different channels and find the best channel for heart rate extraction.

scholarly journals Quantitative Models for Prediction of Cumulative Trauma Disorders Applied to the Maquiladora Industry

2021 ◽  
Vol 18 (7) ◽  
pp. 3830
Author(s):  
Melissa Airem Cázares-Manríquez ◽  
Claudia Camargo-Wilson ◽  
Ricardo Vardasca ◽  
Jorge Luis García-Alcaraz ◽  
Jesús Everardo Olguín-Tiznado ◽  
...  
Keyword(s):  
Heart Rate ◽  
Strong Association ◽  
Vital Signs ◽  
The Body ◽  
Cumulative Trauma Disorders ◽  
Cumulative Trauma ◽  
Normal Range ◽  
Quantitative Models ◽  
Trauma Disorders ◽  
Repetitive Activities

Temperature gradient changes on the surface of the skin or in the middle of the body are signs of a disease. The aim of this study is to develop quantitative models for the prediction of cumulative trauma disorders (CTDs) arising from highly repetitive activities, considering risk factors, such as age, gender, body mass index (BMI), blood pressure (BP), respiratory rate (RR), and heart rate, to prevent injuries in manufacturing factory operators. This research involved 19 individuals from the area of sanding and 14 individuals from the area of tolex in manufacturing factories who had their vital signs and somatometry taken, as well as thermal images of their hands in the dorsal and palmar areas; an evaluation by the OCRA method was also applied. Factors such as BP and heart rate were determined to significantly influence the injuries, but no strong association with BMI was found. Quadratic regression models were developed, the estimates of which were adequately adjusted to the variable (R2 and R2 adjusted > 0.70). When integrating the factors of the OCRA method to the generated models, a better fit was obtained (R2 and adjusted R2 > 0.80). In conclusion, the participants who present levels out of the normal range in at least one of the factors have high probabilities of developing injuries in their wrists.

scholarly journals Monitoring System Heartrat and Respiration Based on Microcontroller

2018 ◽  
Vol 6 (2) ◽  
pp. 58-67
Author(s):  
Abdulmanan Maliki ◽  
Jana Utama
Keyword(s):  
Heart Rate ◽  
Temperature Sensor ◽  
Oxygen Demand ◽  
The Body ◽  
Patient Comfort ◽  
Respiration Monitoring ◽  
Non Invasive ◽  
Measure Heart Rate ◽  
Method Of Measurement ◽  
The Brain

Abstract - The heart is a vital organ in the body whose role is very important in the survival of someone other than the brain, because the heart is responsible for circulating blood throughout the body. And the blood carries oxygen in hemoglobin to meet the oxygen needs in the body. The oxygen demand in the body can be fulfilled through the process of respiration. Oxygen is needed by every cell in the human body. in the process of biochemical reactions (biological oxidation) that function produces ATP (Adenosin Tri Phosphat) energy. The results of substances that occur in the form of residual carbon dioxide and water vapor then exhaled. So the breathing process is needed by humans to get ATP which is useful for doing various activities. Heart rate and respiration measurements can provide important information about the condition or work system of vital organs such as the heart and lungs. Although there are several ways to measure heart rate and respiration rate, the most efficient method of measurement is needed without having to involve manual measurements that can interfere with patient comfort. The Photoplethysmography (PPG) technique is one method of measuring heart rate that can be applied because it is non-invasive so it does not interfere with patient comfort while monitoring heart rate. Whereas to measure the level of respiration can be done by using a temperature sensor that is placed on the air outlet, namely in the mouth. This project aims to create a stand-alone pulse rate and respiration monitoring device that monitors the data can be seen via LCD.Keyword : heart, respiration, photoplethysmography, adenosina trifosfat, oxygen

Failure of accentuated vertical body movements to induce cardiac-locomotor coupling

1992 ◽  
Vol 72 (4) ◽  
pp. 1368-1374 ◽  
Author(s):  
R. L. Kirby ◽  
S. M. Atkinson ◽  
J. E. Donville ◽  
M. F. Urdang ◽  
D. A. Stanley ◽  
...  
Keyword(s):  
Heart Rate ◽  
Human Activities ◽  
The Body ◽  
Force Platform ◽  
Body Movements ◽  
Vertical Movements ◽  
Heart Rates ◽  
Test Conditions ◽  
Powerful Stimulus ◽  
The Difference

Cardiac-locomotor coupling (CLC) has been reported during a variety of rhythmic human activities. One reason postulated for such coupling is that axial movements of the viscera during some activities (the “visceral piston”) may enhance expulsion of blood from the heart; if so, accentuated vertical movements of the body should provide a powerful stimulus to coupling. To test this hypothesis, we studied 20 subjects hopping and 20 others skipping rope for greater than or equal to 10 min while electrocardiographic and force-platform signals were recorded, from which we derived the subjects' exercise and heart rates. The incidence and intensity of apparent coupling in the test subjects were compared with those of cross-over controls, where the heart rate of each subject was related to the hopping or skipping rate of a matched subject. Ratios consistent with coupling were seen in 10 (50%) hopping subjects under test conditions and in 13 (65%) under control conditions; among skipping subjects, the incidences were 11 (55%) and 10 (50%). In neither group of subjects was the difference in the incidences or the intensities of apparent CLC statistically significant. Our failure to detect CLC while our subjects were hopping or skipping suggests that the visceral piston is unimportant to the CLC phenomenon.

scholarly journals Using smart speakers to contactlessly monitor heart rhythms

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Anran Wang ◽  
Dan Nguyen ◽  
Arun R. Sridhar ◽  
Shyamnath Gollakota
Keyword(s):  
Heart Rate ◽  
Correlation Coefficient ◽  
Heart Rhythm ◽  
Cardiac Patients ◽  
Concept System ◽  
Sonar System ◽  
Median Error ◽  
Measure Heart Rate ◽  
Contact Free ◽  
Healthy Participants

AbstractHeart rhythm assessment is indispensable in diagnosis and management of many cardiac conditions and to study heart rate variability in healthy individuals. We present a proof-of-concept system for acquiring individual heart beats using smart speakers in a fully contact-free manner. Our algorithms transform the smart speaker into a short-range active sonar system and measure heart rate and inter-beat intervals (R-R intervals) for both regular and irregular rhythms. The smart speaker emits inaudible 18–22 kHz sound and receives echoes reflected from the human body that encode sub-mm displacements due to heart beats. We conducted a clinical study with both healthy participants and hospitalized cardiac patients with diverse structural and arrhythmic cardiac abnormalities including atrial fibrillation, flutter and congestive heart failure. Compared to electrocardiogram (ECG) data, our system computed R-R intervals for healthy participants with a median error of 28 ms over 12,280 heart beats and a correlation coefficient of 0.929. For hospitalized cardiac patients, the median error was 30 ms over 5639 heart beats with a correlation coefficient of 0.901. The increasing adoption of smart speakers in hospitals and homes may provide a means to realize the potential of our non-contact cardiac rhythm monitoring system for monitoring of contagious or quarantined patients, skin sensitive patients and in telemedicine settings.

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