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Related Concept Videos

Thermosensation01:43

Thermosensation

31.7K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Temperature Measurement Sites01:14

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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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Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
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Mechanism of heat transfer01:19

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Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
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Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

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Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
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Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
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Updated: Sep 5, 2025

Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors
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Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors

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Battery-Less Environment Sensor Using Thermoelectric Energy Harvesting from Soil-Ambient Air Temperature Differences.

Priyesh Pappinisseri Puluckul1, Maarten Weyn1

  • 1IDLab-Faculty of Applied Engineering, University of Antwerp-imec, Sint-Pietersvliet 7, 2000 Antwerp, Belgium.

Sensors (Basel, Switzerland)
|July 9, 2022
PubMed
Summary
This summary is machine-generated.

This study presents a battery-less environmental sensing node that harvests thermal energy from soil temperature differences. The system generates enough energy for daily sensing and DASH7 transmissions, extending device lifetime.

Keywords:
DASH7battery-lessenergy harvestingsoil temperaturethermoelectric effectthermoelectric generator

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Area of Science:

  • Environmental Science
  • Electrical Engineering
  • Computer Science

Background:

  • Energy harvesting is crucial for the longevity of Internet of Things (IoT) devices and Wireless Sensor Networks (WSNs).
  • Environmental sensing applications require autonomous, long-lasting devices, making energy harvesting essential.
  • Thermal energy harvesting, utilizing temperature gradients, is a viable power source for such devices.

Purpose of the Study:

  • To design and demonstrate a proof-of-concept environmental sensing node powered by soil thermal energy.
  • To evaluate the energy harvesting potential from soil and air temperature differences in diverse locations.
  • To develop a battery-less system using supercapacitors for energy storage and management.

Main Methods:

  • Designed an environmental sensing node incorporating a thermal energy harvester.
  • Collected soil and air temperature data from Belgium and Iceland to assess energy production potential.
  • Developed a power management circuit and utilized a supercapacitor for energy storage.
  • Deployed and evaluated the performance of the field prototype.

Main Results:

  • The system harvests an average of 178.74 mJ per day.
  • The harvested energy is sufficient for at least 5 DASH7 communication protocol transmissions and 100 sensing tasks daily.
  • The battery-less design with supercapacitor storage proved effective.

Conclusions:

  • Soil temperature gradients can effectively power environmental sensing nodes.
  • The developed energy harvesting system enables autonomous, long-term environmental monitoring.
  • This approach significantly extends the operational lifetime of IoT devices in remote applications.