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Related Concept Videos

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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A 0.6-V All-Digital Temperature Sensor with Reduced Supply Sensitivity.

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

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

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
Summary
This summary is machine-generated.

This study presents a low-voltage, all-digital temperature sensor with reduced sensitivity to voltage fluctuations. Utilizing dual logic delay lines, it achieves an eightfold decrease in power supply sensitivity without needing an external clock.

Keywords:
all-digitallow voltage supplysupply sensitivitytemperature sensortwo-point calibration

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Area of Science:

  • Integrated Circuit Design
  • Solid-State Electronics
  • Sensor Technology

Background:

  • Accurate temperature sensing is crucial for electronic systems.
  • Traditional sensors often suffer from supply voltage variations.
  • Need for low-power, digital, and robust temperature sensors.

Purpose of the Study:

  • To develop an all-digital, synthesizable temperature sensor.
  • To minimize sensitivity to supply voltage variations.
  • To achieve high accuracy and low power consumption.

Main Methods:

  • Design of a 0.6V sensor using two logic delay lines with different transistor lengths.
  • Exploiting differences in thermal dependency and charging currents.
  • Digital output generation via propagation delays.
  • Fabrication in 55 nm CMOS technology.

Main Results:

  • Eightfold reduction in power supply sensitivity compared to single delay line designs.
  • Inaccuracy of ±1 °C across 20-90 °C.
  • Low energy consumption of 2 nJ per conversion.
  • Fast conversion time of 0.8 ms and 0.2 °C resolution.
  • Verified performance on FPGA.

Conclusions:

  • The proposed all-digital temperature sensor offers superior supply voltage insensitivity.
  • It provides accurate and efficient temperature monitoring for integrated circuits.
  • The design is suitable for low-voltage applications and FPGA implementation.