Results 21 to 30 of about 532,065 (261)

Non-Contact Face Temperature Measurement by Thermopile-Based Data Fusion

open access: yesSensors, 2023
Thermal imaging cameras and infrared (IR) temperature measurement devices act as state-of-the-art techniques for non-contact temperature determination of the skin surface.
Faraz Bhatti   +6 more
doaj   +1 more source

LED-CT Scan for pH Distribution on a Cross-Section of Cell Culture Medium

open access: yesSensors, 2018
In cell culture, the pH of the culture medium is one of the most important conditions. However, the culture medium may have non-uniform pH distribution due to activities of cells and changes in the environment.
Nobuya Higashino   +6 more
doaj   +1 more source

A Portable Non-Contact Tremor Vibration Measurement and Classification Apparatus

open access: yesActuators, 2022
Tremors are the most common type of movement disorder and affect the lives of those experiencing them. The efficacy of tremor therapies varies according to the aetiology of the tremor and its correct diagnosis.
Mohd Zarhamdy Md Zain   +5 more
doaj   +1 more source

Non-contact heart vibration measurement using computer vision-based seismocardiography

open access: yesScientific Reports, 2023
Seismocardiography (SCG) is the noninvasive measurement of local vibrations of the chest wall produced by the mechanical activity of the heart and has shown promise in providing clinical information for certain cardiovascular diseases including heart ...
Mohammad Muntasir Rahman   +2 more
doaj   +1 more source

Non-Contact Global Measurement of the Engine in Working Condition

open access: yesPhotonics, 2023
Vibration measurements are essential for studying the dynamic properties of structures, as they can better capture the global characteristics of the structure. This paper proposes a three-dimensional measurement method based on projected structured light
Guoce Hu   +4 more
doaj   +1 more source

Preamplifiers for non-contact capacitive biopotential measurements [PDF]

open access: yes2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2013
Non-contact biopotential sensing is an attractive measurement strategy for a number of health monitoring applications, primarily the ECG and the EEG. In all such applications a key technical challenge is the design of a low-noise trans-impedance preamplifier for the typically low-capacitance, high source impedance sensing electrodes.
GuoChen Peng   +2 more
openaire   +2 more sources

Non-contact measurement system for hot water drilled ice boreholes

open access: yesAnnals of Glaciology, 2021
A programmable borehole measurement system was deployed in hot water drilled ice holes during the ‘Bed Access and Monitoring of Ice Sheet History’ (BEAMISH) project to drill to the bed of the Rutford Ice Stream in West Antarctica.
Carson W. I. McAfee   +5 more
doaj   +1 more source

Non-invasive method for rotor bar fault diagnosis in three-phase squirrel cage induction motor with advanced signal processing technique

open access: yesThe Journal of Engineering, 2019
The condition monitoring of the rotor bar in the squirrel cage induction motors (SCIMs) is performed with various contact methods and non-contact methods.
Madhusudhana Reddy Barusu   +2 more
doaj   +1 more source

Research on Non-Contact and Non-Fixed Cable Force Measurement Based on Smartphone

open access: yesApplied Sciences, 2021
Stay cable is the major load-carrying element in cable-stayed bridges. The process of monitoring cable forces would be beneficial to ensure the safety of bridges.
Yongwei Wang   +4 more
doaj   +1 more source

Non-Contact Speed Measurement—a Comparison of Optical Systems

open access: yesMeasurement + Control, 1973
Four different optical methods of speed measurement for moving surfaces are considered, two using incoherent light and two using coherent laser light. These systems are described as spatial filters acting on the Wiener spectrum of the moving surface. For
R. Fritsche, F. Mesch
doaj   +1 more source

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