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Videos de Conceptos Relacionados

Temperature Measurement Sites01:14

Temperature Measurement Sites

3.1K
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...
3.1K
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

1.7K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
1.7K
Assessing Body Temperature - Oral01:14

Assessing Body Temperature - Oral

1.4K
Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
1.4K
Assessing Body Temperature - Axilla01:14

Assessing Body Temperature - Axilla

1.1K
Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
1.1K
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

7.1K
Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
7.1K
Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

11.0K
Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
11.0K

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Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
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Sensor de temperatura totalmente digital de 0,6 V con sensibilidad reducida a la alimentación

Hui Zhou1, Yi Wang1, Shuang Xie1,2,3

  • 1School of Integrated Circuits, Shandong University, Jinan 250100, China.

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
Resumen

Este estudio presenta un sensor de temperatura totalmente digital de bajo voltaje con sensibilidad reducida a las fluctuaciones de voltaje. Utilizando líneas de retardo lógicas duales, logra una disminución ocho veces mayor en la sensibilidad de la fuente de alimentación sin necesidad de un reloj externo.

Palabras clave:
totalmente digitalbaja tensión de alimentaciónsensibilidad a la alimentaciónsensor de temperaturacalibración de dos puntos

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Área de la Ciencia:

  • Diseño de Circuitos Integrados
  • Electrónica de Estado Sólido
  • Tecnología de Sensores

Sus antecedentes:

  • La detección precisa de la temperatura es crucial para los sistemas electrónicos.
  • Los sensores tradicionales a menudo sufren variaciones en la tensión de alimentación.
  • Necesidad de sensores de temperatura de bajo consumo, digitales y robustos.

Objetivo del estudio:

  • Desarrollar un sensor de temperatura totalmente digital y sintetizable.
  • Minimizar la sensibilidad a las variaciones de la tensión de alimentación.
  • Lograr alta precisión y bajo consumo de energía.

Principales métodos:

  • Diseño de un sensor de 0,6 V utilizando dos líneas de retardo lógicas con diferentes longitudes de transistor.
  • Explotación de las diferencias en la dependencia térmica y las corrientes de carga.
  • Generación de salida digital a través de retardos de propagación.
  • Fabricación en tecnología CMOS de 55 nm.

Principales resultados:

  • Reducción ocho veces mayor en la sensibilidad de la fuente de alimentación en comparación con diseños de línea de retardo única.
  • Inexactitud de ±1 °C en el rango de 20-90 °C.
  • Bajo consumo de energía de 2 nJ por conversión.
  • Tiempo de conversión rápido de 0,8 ms y resolución de 0,2 °C.
  • Rendimiento verificado en FPGA.

Conclusiones:

  • El sensor de temperatura totalmente digital propuesto ofrece una insensibilidad superior a la tensión de alimentación.
  • Proporciona una monitorización de temperatura precisa y eficiente para circuitos integrados.
  • El diseño es adecuado para aplicaciones de bajo voltaje e implementación en FPGA.