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A smart mask for active defense against airborne pathogens.
Kalavakonda, Rohan Reddy; Masna, Naren Vikram Raj; Mandal, Soumyajit; Bhunia, Swarup.
Afiliación
  • Kalavakonda RR; Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA.
  • Masna NVR; Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA.
  • Mandal S; Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA.
  • Bhunia S; Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA. swarup@ece.ufl.edu.
Sci Rep ; 11(1): 19910, 2021 10 07.
Article en En | MEDLINE | ID: mdl-34620887
ABSTRACT
Face masks are a primary preventive measure against airborne pathogens. Thus, they have become one of the keys to controlling the spread of the COVID-19 virus. Common examples, including N95 masks, surgical masks, and face coverings, are passive devices that minimize the spread of suspended pathogens by inserting an aerosol-filtering barrier between the user's nasal and oral cavities and the environment. However, the filtering process does not adapt to changing pathogen levels or other environmental factors, which reduces its effectiveness in real-world scenarios. This paper addresses the limitations of passive masks by proposing ADAPT, a smart IoT-enabled "active mask". This wearable device contains a real-time closed-loop control system that senses airborne particles of different sizes near the mask by using an on-board particulate matter (PM) sensor. It then intelligently mitigates the threat by using mist spray, generated by a piezoelectric actuator, to load nearby aerosol particles such that they rapidly fall to the ground. The system is controlled by an on-board micro-controller unit that collects sensor data, analyzes it, and activates the mist generator as necessary. A custom smartphone application enables the user to remotely control the device and also receive real-time alerts related to recharging, refilling, and/or decontamination of the mask before reuse. Experimental results on a working prototype confirm that aerosol clouds rapidly fall to the ground when the mask is activated, thus significantly reducing PM counts near the user. Also, usage of the mask significantly increases local relative humidity levels.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Contexto en salud: 4_TD Problema de salud: 4_pneumonia Asunto principal: Dispositivos de Protección Respiratoria / Exposición por Inhalación / Material Particulado / SARS-CoV-2 / COVID-19 / Máscaras Límite: Humans Idioma: En Revista: Sci Rep Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Contexto en salud: 4_TD Problema de salud: 4_pneumonia Asunto principal: Dispositivos de Protección Respiratoria / Exposición por Inhalación / Material Particulado / SARS-CoV-2 / COVID-19 / Máscaras Límite: Humans Idioma: En Revista: Sci Rep Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos
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