Linearization of High Precision Human Body Temperature Measurement Circuit Based on NTC Thermistor

2015 ◽  
Vol 713-715 ◽  
pp. 381-384
Author(s):  
De Jun Li ◽  
Chi Gang Xing
Keyword(s):  
Body Temperature ◽  
The Body ◽  
Measuring System ◽  
Measurement Circuit ◽  
Actual Measurement ◽  
Thermistor Bridge ◽  
Ntc Thermistor ◽  
Human Body Temperature ◽  
Body Temperature Measurement ◽  
Linearization Problem

In the micro-climate cloth researching, we usually need to accurate measuring the body temperature, in this paper we choose the constant-voltage temperature measuring system based on the NTC thermistor to measure the temperature. Because the resistance of the thermistor and the temperature is not linear, so this will cause the output of the measurement circuit is not linear. In actual measurement we usually require the output of the circuit varies linearly in the required range. This paper mainly research the linearization problem of the NTC thermistor bridge circuit in the required temperature range.

Arduino Promini-based Helmet Temperature Measuring Helmet with MLX90614-DCI Sensor

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Wahyu ja’far siddiq ◽  
Indah sulistiyowati
Keyword(s):  
Body Temperature ◽  
Clinical Symptoms ◽  
The Body ◽  
Shortness Of Breath ◽  
Turn On ◽  
Measurement Results ◽  
Accuracy Level ◽  
Human Body Temperature ◽  
Body Temperature Measurement ◽  
The Government

The Covid-19 pandemic that is currently spreading in Indonesia has claimed thousands of lives. Coronavirus Disease is characterized by the main clinical symptoms of fever >38 °C, coughing, to shortness of breath. In preventing its spread, the government conducts early detection by examining the main symptoms in the form of a fever and enforcing health protocols on each line. Therefore, we need an appropriate innovation that can make it easier for officers/guards to check human body temperature, especially in crowded places such as at airports, malls, or on the highway. Currently, body temperature measurement equipment is widely used, which allegedly made many errors in detecting it. Therefore, an innovative helmet was created that can be used by guards, security and even the police to detect body temperature based on the Arduino Pro Mini with the MLX90614-DCI sensor and the output is the real body temperature displayed on the LED screen. When the body temperature reads more than 38 °C, the helmet will turn on a buzzer and an LED to show that the target measurement is in a fever condition, and it is recommended going to the health center for further examination. This tool has been tested, and the sensor readings have an accuracy at a distance of 100 cm with several participants and the sensor readings are compared with the reading values from the alpha one thermometer and the measurement results have an accuracy level of 95%.

scholarly journals Design of Fixed-Wing and Multi-Copter Hybrid Drone System for Human Body Temperature Measurement during COVID-19 Pandemic

2021 ◽  
Vol 20 ◽  
pp. 31-39
Author(s):  
Zayed Almheiri ◽  
Rawan Aleid ◽  
Sharul Sham Dol
Keyword(s):  
Body Temperature ◽  
Temperature Measurement ◽  
Human Body ◽  
Equivalent Strain ◽  
Simulation Software ◽  
Operational Conditions ◽  
Drag Forces ◽  
Human Body Temperature ◽  
Body Temperature Measurement ◽  
Lift And Drag

The purpose of this research is to conduct aerodynamics study and design a hybrid drone system of fixed-wing and multi-copter. The mission of this drone is to measure human body temperature during COVID19 pandemic. The specific aim of the drone is to fly and cover larger industrial areas roughly about 50 km2 with longer flying time than the conventional drone, of about 1.5 hours. The applications of the simulation software such as XFLR5 and ANSYS have a big impact in identifying areas that need to be improved for the drone system. XFLR5 software was used to compare the characteristics of different airfoils with highest lift over drag, L/D ratio. Based on the airfoil selection, it was found that NACA 4412 airfoil produces the highest L/D ratio. The detailed geometry of the drone system includes a fuselage length of 1.9 meters and wingspan of 2 meters. Moreover, 10 sheets of solar panels were placed along the wing for sustainable flight operation to cover wider areas of mission. The structural analysis was done on ANSYS to test the elastic stress, equivalent strain, deformation, factor of safety pressure as well as lift and drag forces under various operational conditions and payloads. The landing gear was analyzed for harsh landing. ANSYS Computational Fluid Dynamics (CFD) was utilized to study the aerodynamics of the drone at different parameters such as the velocities and angles of attack during the operation. This design ensures the stability of the drone during the temperature measurement phase. The best thermal-imaging camera for such purpose would be the Vue Pro R 336, 45° radiometric drone thermal camera with a resolution of 640 x 512 pixels. This camera has the advantage of a permanent continuous out focus that give the ability of taking measurements even if there was changing on the altitude or any kind of vibrations.

scholarly journals Real-World Evidence: The Low Validity of Temperature Screening for COVID-19 Triage

2021 ◽  
Vol 9 ◽  
Author(s):  
Bogdan C. Pană ◽  
Henrique Lopes ◽  
Florentina Furtunescu ◽  
Diogo Franco ◽  
Anca Rapcea ◽  
...  
Keyword(s):  
Body Temperature ◽  
The Body ◽  
Polymerase Chain Reaction Test ◽  
Travel History ◽  
Transplant Patients ◽  
Real World Evidence ◽  
False Sense ◽  
Health Related ◽  
Body Temperature Measurement ◽  
Chain Reaction Test

Background: The COVID-19 pandemic forced health-related organizations to rapidly launch country-wide procedures that were easy to use and inexpensive. Body temperature measurement with non-contact infrared thermometers (NCITs) is among the most common procedures, both in hospital settings and in many other entities. However, practical hospital experiences have raised great doubts about the procedure's validity.Aim: This study aimed to evaluate the validity of the body temperature measured using NCITs among oncological and transplant patients who took the polymerase chain reaction test for SARS-Cov-2 PCR+ and PCR- in a Romanian Hospital.Methods: Body temperature was measured for 5,231 inpatients using NCITs. The cutoff point for fever was equal to or above 37.3°C. Patients then completed a questionnaire about their symptoms, contact, and travel history.Findings: Fever was detected in five of 53 persons with PCR+, resulting in a sensitivity of 9.43% (95% CI, 3.13–20.66%). No fever was verified in 5,131 of 5,171 persons with PCR-, resulting in a specificity of 99.15% (95% CI, 98.86–99.38%). A defensive vision of NCIT procedure (maximum standard error only in favor) had a sensitivity of 15.09% (95% CI, 6.75–27.59%).Conclusions: The use of NCITs in a triage provides little value for detection of COVID-19. Moreover, it provides a false sense of protection against the disease while possibly discriminating individuals that could present fever due to other reasons, such as oncologic treatments, where fever is a common therapeutical consequence. The consumption of qualified human resources should be considered, especially in the context of the shortage of healthcare professionals worldwide.

scholarly journals ANDROID APPLICATION FOR MEASURING HUMAN BODY TEMPERATURE AND FORCASTING FUTURE ILLNESS

2014 ◽  
pp. 161-164
Author(s):  
S PRABHAKARAN ◽  
DHANESHWARI KUMARI ◽  
RIA AHUJA
Keyword(s):  
Operating System ◽  
Body Temperature ◽  
Mobile Device ◽  
Human Body ◽  
The Body ◽  
The Other ◽  
Android Application ◽  
Human Body Temperature ◽  
Normal Human ◽  
Android Operating System

Android Application for measuring human body temperature is a new age mobile thermometer. This kind of application already exists but requires manual feeding temperature. In our project, we propose an application which will measure the body temperature automatically while the user is operating the mobile device. It has an in-built function which can trigger alert messages whenever the temperature becomes critical more than normal human body temperature. The display segment of the device is made up of capacitive touch screen, which can act upon the bioelectricity produced by human body with each and every touch. This application requires Android Operating System Version 2.2. It will also diagnose the other diseases the user might have depending upon the symptoms entered.

scholarly journals Drosophila Temperature Preference Rhythms: An Innovative Model to Understand Body Temperature Rhythms

2019 ◽  
Vol 20 (8) ◽  
pp. 1988 ◽  
Author(s):  
Tadahiro Goda ◽  
Fumika N. Hamada
Keyword(s):  
Locomotor Activity ◽  
Body Temperature ◽  
The Body ◽  
Metabolic Energy ◽  
Temperature Preference ◽  
Preferred Temperature ◽  
Activity Rhythms ◽  
Temperature Rhythm ◽  
Body Temperature Rhythm ◽  
Human Body Temperature

Human body temperature increases during wakefulness and decreases during sleep. The body temperature rhythm (BTR) is a robust output of the circadian clock and is fundamental for maintaining homeostasis, such as generating metabolic energy and sleep, as well as entraining peripheral clocks in mammals. However, the mechanisms that regulate BTR are largely unknown. Drosophila are ectotherms, and their body temperatures are close to ambient temperature; therefore, flies select a preferred environmental temperature to set their body temperature. We identified a novel circadian output, the temperature preference rhythm (TPR), in which the preferred temperature in flies increases during the day and decreases at night. TPR, thereby, produces a daily BTR. We found that fly TPR shares many features with mammalian BTR. We demonstrated that diuretic hormone 31 receptor (DH31R) mediates Drosophila TPR and that the closest mouse homolog of DH31R, calcitonin receptor (Calcr), is essential for mice BTR. Importantly, both TPR and BTR are regulated in a distinct manner from locomotor activity rhythms, and neither DH31R nor Calcr regulates locomotor activity rhythms. Our findings suggest that DH31R/Calcr is an ancient and specific mediator of BTR. Thus, understanding fly TPR will provide fundamental insights into the molecular and neural mechanisms that control BTR in mammals.

Study on the Preparation and Implementation of a New Type Digital Electronic Thermometer

2013 ◽  
Vol 760-762 ◽  
pp. 1348-1353
Author(s):  
Ping Jun Tao ◽  
Sheng Zhou Yang ◽  
Yuan Zheng Yang ◽  
Xian Chao Chen ◽  
Ye Qiu Yu
Keyword(s):  
Body Temperature ◽  
The Body ◽  
Physiological Parameter ◽  
Life Activity ◽  
Display Module ◽  
Important Index ◽  
Measurement Results ◽  
Human Body Temperature ◽  
New Type ◽  
Electronic Thermometer

Human body temperature, as a manifestation of life activity, is an important physiological parameter of the new supersedes the old. The body temperature not only has physiological significance, but also has important clinical significance, which can be considered as an important index for clinical diagnosis. Based on the NTC temperature sensor as the core, through the whole system framework construction and the software control system design, a quick and accurate intelligent digital electronic thermometer was prepared. Under software control, intelligent temperature measurement is realized. The thermometer not only can accurately register the temperature, also has many functions such as broadcast and logic judgment on temperature, in which, the display module will judge and display the measurement results.

scholarly journals Design of a contactless body temperature measurement system using Arduino

2020 ◽  
Vol 19 (3) ◽  
pp. 1251 ◽  
Author(s):  
Asif A. Rahimoon ◽  
Mohd Noor Abdullah ◽  
Ishkrizat Taib
Keyword(s):  
Body Temperature ◽  
Human Body ◽  
Low Cost ◽  
Wearable Sensors ◽  
Vital Signs ◽  
Smart Phone ◽  
Human Body Temperature ◽  
Body Temperature Measurement ◽  
The Difference ◽  
Temperature Measurement System

<span lang="EN-US">The recent advances in electronics and microelectronics devices allow the development of newly low-cost monitoring tools used by peoples for health preventive purposes. Sensors used in medical equipments convert various forms of human body vital signs into electrical signals. Therefore, the healthcare monitoring systems considering non-invasive and wearable sensors with integrated communication mediums allow an efficient solution to live a comfortable home life.  This paper presents the remote monitoring of human body temperature (HBT) wirelessly by means of Arduino controller with different sensors and open source internet connection. The proposed monitoring system uses an internet network via wireless fieldity (wifi) connection to be linked with online portal on smart phone or computer. The proposed system is comprised of an Arduino controller, LM-35 (S1), MLX-90614 (S2) temperature sensors and ESP-wifi shield module. The obtained result has shown that real time temperature monitoring data can be transferred to authentic observer by utilizing internet of things (IoT) applications. The findings from this research indicates that the difference of average temperature in between Sensor S1 and S2 is about 15 <sup>0</sup>C</span>

DIAGNOSIS AND TREATMENT: CHILDREN WITH FEVERS

PEDIATRICS ◽  
1969 ◽  
Vol 43 (2) ◽  
pp. 290-293
Author(s):  
Thomas E. Cone
Keyword(s):  
Clinical Practice ◽  
Body Temperature ◽  
Diagnostic Value ◽  
The Body ◽  
Parental Anxiety ◽  
Experimental Conditions ◽  
Sufficient Cause ◽  
Body Temperature Measurement ◽  
Clinical Interest ◽  
Deep Temperature

In the infant the temperature rises on the most trivial cause; it may be lumpy faeces in the intestine, it may be a slight coryza. I have seen cases where even some irritation of the skin seemed sufficient cause; as the child grows older, similarly but less often, constipation, some slight deviation from a customary diet, or even some unwonted excitement may be sufficient cause for a rise in temperature.1 Sir George Frederic Still STILL'S explanation of some of the causes of fever in the infant and child may not be acceptable to the contemporary practitioner, but none would doubt that the clinical thermometer has been both an instrument of great diagnostic value, yet often a source of undue parental anxiety. Ever since Traube in 1850 first recommended routine daily recording of the temperature of ill children, the normal diurnal variations of body temperature in infants and children remain of clinical interest-and at times misunderstanding. Parents and some physicians forget that no one temperature reading can be given as normal for all children at all times. BODY TEMPERATURE MEASUREMENT IN CLINICAL PRACTICE The internal temperature of the body can best be determined by a rectal thermometer. But, even rectal temperature readings may not be a true record of the body's deep temperature because of variations in the technic of using the thermometer. When, under experimental conditions, the thermometer is inserted 14 cm, the reading will be 0.3 to 2.4°F(0.2 to 1.3°C) higher than when it is inserted between 2 and 6 cm, as is the custom in clinical practice.

scholarly journals PSX-13 Correlation between superficial body temperatures measured with an infrared thermometer in alpacas

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 463-464
Author(s):  
jorge L Vilela ◽  
Jorge Ascue ◽  
Milagros Callan ◽  
Gianella Goycochea ◽  
Andrea Jauregui ◽  
...  
Keyword(s):  
Body Temperature ◽  
Temperature Measurement ◽  
Rectal Temperature ◽  
Animal Health ◽  
Outer Zone ◽  
The Body ◽  
Body Temperatures ◽  
Infrared Thermometer ◽  
Technological Unit ◽  
Body Temperature Measurement

Abstract The temperature measurement is essential during the physical examination since it helps to detect abnormalities on animal health. In addition, it should be done in the shortest possible time to avoid stress. The objective of this research is to calculate the correlation between rectal temperature and the superficial body temperature by means of a digital infrared thermometer. Ten alpacas huacaya from the center of development Alpaquero (CEDAT-DESCOSUR), located in Arequipa region at 4,365 m.a.s.l, and eight alpacas huacaya of the zootechnical and technological unit (UZYT) of the Universidad Cientifica del Sur, located in Lima at 0 m.a.s.l., were used. Rectal temperature measurement (RECTAL) was done with a veterinary clinical thermometer for one minute. Superficial body temperature measurement was conducted with infrared thermometer model CENTER 350®, at a distance of between 20 to 25 cm. Six measuring points were established by infrared thermometer: the outer zone of the nose (ON), the inner zone of the nose (IN), the extreme zone of ear (EE), middle zone of ear (ME), lower zone of the ear (LE) and the belly of the animal (BE). Rectal temperatures were measured at the same time as superficial body temperatures. Pearson’s correlation coefficient and graphs were calculated using an R software package called “CORRGRAM.” The results are presented in Table 1. Mean and deviation standard for rectal temperature from CEDAT-DESCOSUR and UZYT were 38.03 ± 0.37 and 37.46 ± 0.35 ° C, respectively. The results showed that there is a major correlation between rectal temperature and the temperature of the middle of the ear and the outer zone of the nose. In conclusion, there is a highly significant correlation between rectal temperature and superficial body temperature in some areas of the body, being an alternative option for the prediction of temperature in alpacas.

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