Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Mechanical Ventilation I: Indication and Settings

Mechanical Ventilation I: Indication and Settings

Mechanical ventilation is a life-saving technique for managing acute respiratory failure and other respiratory complications. The process involves using a machine known as a ventilator to supply oxygen to the lungs and assist in removing carbon dioxide. It serves as a bridge to long-term mechanical ventilation or a temporary measure until ventilatory support is discontinued. The ventilator can maintain this function for a prolonged period, providing critical support for patients until they can...

Mechanical Ventilation III: Noninvasive Ventilation

Mechanical Ventilation III: Noninvasive Ventilation

Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation...

Mechanical Ventilation II: Invasive Ventilation

Mechanical Ventilation II: Invasive Ventilation

Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...

Refrigerators and Heat Pumps

Refrigerators and Heat Pumps

Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance.
A household refrigerator removes heat from...

Ventilatory Modes

Ventilatory Modes

Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

CIT-Lasso: a scalable approach beyond guilty by association for identifying causal variants from genome-wide summary statistics.

Genome biology·2026

Same author

Chemoproteomics unveils the antibacterial mechanism of silver ions: inhibiting peptidoglycan synthesis <i>via</i> targeting Mur family proteins in <i>Staphylococcus aureus</i>.

Chemical science·2026

Same author

Sporoderm Disruption Reshapes the Chemical Characteristics and Enhances the Mitochondrial Protective Activity of <i>Ganoderma lucidum</i> Spore Polysaccharides via SIRT1/AMPK Signaling.

International journal of molecular sciences·2026

Same author

Biomechanical Effects of 3D-Printed and Spring-Based Virtual Reality Headset Support and Task Demands on the Neck.

IISE transactions on occupational ergonomics and human factors·2026

Same author

Detecting Features of Interpersonal Difficulties in First-Person Accounts of Schizophrenia; Automated Linguistic and Network Analyses.

Schizophrenia bulletin open·2026

Same author

A colorimetric glucose sensor with gradient porous polyglycolic acid (PGA) microneedle array patch.

Biomedical microdevices·2026

Search research articles

Related Experiment Video

Updated: Feb 24, 2026

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Published on: March 3, 2023

An intelligent FFR with a self-adjustable ventilation fan.

Song Zhou¹, Hui Li¹, Shengnan Shen¹

¹a School of Power and Mechanical Engineering , Wuhan University , Wuhan , China.

Journal of Occupational and Environmental Hygiene

|August 22, 2017

Summary

This study introduces an intelligent Filtering Facepiece Respirator (FFR) with a self-adjusting fan for enhanced comfort. The smart ventilation system actively reduces heat, humidity, and CO2 levels inside the mask.

Keywords:

FFR intelligent control ventilation fan

More Related Videos

Interactive and Visualized Online Experimentation System for Engineering Education and Research

Interactive and Visualized Online Experimentation System for Engineering Education and Research

Published on: November 24, 2021

Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics

Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics

Published on: August 19, 2019

Related Experiment Videos

Last Updated: Feb 24, 2026

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Published on: March 3, 2023

Interactive and Visualized Online Experimentation System for Engineering Education and Research

Interactive and Visualized Online Experimentation System for Engineering Education and Research

Published on: November 24, 2021

Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics

Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics

Published on: August 19, 2019

Area of Science:

Biomedical Engineering
Wearable Technology
Environmental Control Systems

Background:

Filtering Facepiece Respirators (FFRs) can cause discomfort due to elevated temperature, humidity, and CO2 levels in the dead space.
Existing FFRs often lack active systems to mitigate these environmental factors, impacting user comfort and potentially compliance.
Previous FFR designs did not incorporate intelligent, real-time adjustments to internal environmental conditions.

Purpose of the Study:

To develop and evaluate an intelligent Filtering Facepiece Respirator (FFR) with a self-adjustable ventilation fan.
To improve user comfort by actively reducing temperature, relative humidity, and CO2 concentrations within the FFR.
To implement an intelligent control system for real-time adjustment of fan speed based on internal environmental parameters.

Main Methods:

Designed an FFR incorporating an 8-bit STC15W404AS microcontroller for intelligent fan control.
Integrated a high-precision AM2320 sensor for real-time monitoring of temperature and relative humidity within the FFR dead space.
Developed a control algorithm to adjust the ventilation fan's rotation speed based on sensor feedback, utilizing a rechargeable lithium battery with power-save mode.

Main Results:

The intelligent control system effectively managed temperature, relative humidity, and CO2 concentrations in real time.
The self-adjustable ventilation fan demonstrated improved comfort compared to previous FFR versions.
Two experiments were conducted to optimize fan placement for maximum efficacy.

Conclusions:

The intelligent FFR with a self-adjustable ventilation fan offers a significant improvement in user comfort.
The implemented control system provides real-time environmental regulation within the FFR.
The simplistic design and power-efficient operation contribute to the practicality of this advanced FFR technology.