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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.
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An Optimized PZT-FBG Voltage/Temperature Sensor.

Shangpeng Sun1, Feiyue Ma1, Yanxiao He2

  • 1Electric Power Research Institute, State Grid Ningxia Power Co., Ltd., Yinchuan 750011, China.

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|March 6, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces an improved piezoelectric ceramic-fiber Bragg grating (PZT-FBG) optical sensor for simultaneous voltage and temperature measurement. The optimized design enhances linearity and resolution for intelligent sensing applications.

Keywords:
FBGPZTtemperaturevoltage

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Area of Science:

  • Intelligent sensing
  • Optical sensors
  • Materials science

Background:

  • Piezoelectric grating voltage sensors offer compact size, cost-effectiveness, and EMI immunity.
  • Existing designs often have limitations in integrated temperature and voltage measurement.

Purpose of the Study:

  • To propose and validate an optimized optical path architecture for a PZT-FBG voltage-temperature sensor.
  • To repurpose a reference grating for simultaneous temperature measurement.
  • To enhance the linearity and resolution of optical voltage sensors.

Main Methods:

  • Developed a PZT-FBG voltage-temperature demodulation optical path architecture.
  • Experimentally validated two optical path connection schemes (before and after optimization).
  • Tested sensor performance across voltage ranges (250 V to 1800 V) and frequencies (50 Hz to 20 kHz).

Main Results:

  • Achieved high goodness of fit (0.996-0.999) for voltage measurements across fundamental waveforms.
  • Demonstrated effective frequency response from 50 Hz to 20 kHz.
  • Obtained a high goodness of fit (0.997) for temperature measurements.

Conclusions:

  • The optimized optical path enables synchronous demodulation of voltage and temperature.
  • The improved method significantly enhances voltage sensor linearity and resolution.
  • This research provides insights for advancing optical voltage sensor performance and applications.