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Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
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Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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IR Spectrometers01:25

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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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An All Fiber White Light Interferometric Absolute Temperature Measurement System.

Jeonggon Harrison Kim1

  • 1Information and Communication Engineering Dept. Hansei University, 604-5 Dangjeong-dong Gunpocity Kyunggi-do, Korea. jeongkim@hansei.ac.kr.

Sensors (Basel, Switzerland)
|November 23, 2016
PubMed
Summary
This summary is machine-generated.

This study presents an all-fiber white light interferometric system for absolute temperature measurement. The system demonstrates high accuracy and robustness, validating its feasibility for precise thermal monitoring.

Keywords:
All fiber white light interferometryabsolute temperature measurementsignal processing algorithm

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Area of Science:

  • Optical Engineering
  • Metrology
  • Fiber Optics

Background:

  • Interferometry is a key technique for precise measurements.
  • White light interferometry offers advantages for absolute measurements.
  • Existing systems may face challenges in stability and accuracy.

Purpose of the Study:

  • To present an all-fiber white light interferometric system for absolute temperature measurement.
  • To validate the performance of a previously proposed signal processing algorithm in a practical system.
  • To assess the system's stability, accuracy, hysteresis, and robustness.

Main Methods:

  • Development of an all-fiber white light interferometric system.
  • Implementation of a novel signal processing algorithm for data analysis.
  • Conducting stability, absolute temperature measurement, hysteresis, and robustness tests.

Main Results:

  • Demonstrated feasibility of absolute temperature measurement with high accuracy (0.015 and 0.0005 fringe).
  • Successfully performed hysteresis testing across a wide temperature range (373K to 873K).
  • Confirmed system robustness against laser diode drift, interferometer drift, and PZT non-linearity.

Conclusions:

  • The developed all-fiber white light interferometric system is feasible for accurate absolute temperature measurement.
  • The signal processing algorithm enhances system performance and reliability.
  • The system exhibits robustness, making it suitable for demanding applications.