A smart respirator includes a main respirator-body including a first open end and a second open end. A diameter of the first open end is smaller than a diameter of the second open end. The smart respirator further includes a front respirator-body arranged at the first open end. The front respirator-body includes a filter sheet arranged inside the front respirator-body and configured to absorb pollutants in air entering the front respirator-body, an air sensor arranged inside the front respirator-body and configured to detect an air index of filtered air filtered by the filter sheet, and a flow sensor arranged inside the front respirator-body and configured to determine a total respiratory amount. The smart respirator also includes a fixation band arranged at the second open end.

A smart mask includes a main mask body including a first opening end and a second opening end. A diameter of the first opening end is smaller than a diameter of the second opening end. The mask further includes a front mask body arranged at the first opening end and fixing straps arranged at the second opening end. The front mask body includes a filter configured to absorb pollutants in air entering the front mask body and a sensor configured to record a wearing time of the smart mask.

A monitoring system may include a server, and mask devices in communication with the server. Each mask device may include a mask body to be worn by a respective user, an air quality sensor carried by the mask body and configured to detect a contaminant concentration value in air breathed through the mask body, a wireless transceiver carried by the mask body and in communication with the server via a wireless link, and a processor carried by the mask body and coupled to the air quality sensor and the wireless transceiver. The processor may be configured to send an alert message to the server when the contaminant concentration value respectively exceeds a threshold.

A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.

Embodiments relate generally to respirator face masks, and specifically to powered face masks which may be custom-controllable to better provide for the specific air needs of the individual user wearing the mask. For example, the face mask embodiments typically include a filter and a motorized fan, both generally located on the face mask itself, along with a processor. The processor then may use inputs, for example specific to the user and/or the environment, to control the fan speed. Thus, the fan speed of the face mask may be custom controlled to provide the appropriate amount of filtered air as the specific user needs it.

Face masks and related methods with improved filtering, wear-ability, quality of seal against a wearer's face, filtration efficiency, lifetime, and/or durability are provided. A face mask includes a filter assembly and a retention mechanism. The filter assembly is configured to conform to a face of a user and cover a nose and mouth of the user. The filter assembly can include a tessellated filter layer shaped to extend above and below a reference medial surface of the tessellated filter layer so that the tessellated filter layer has an air-filtering area greater than an area of the reference medial surface.

A filter cartridge for a respirator includes an RFID chip encoding a digital change management policy (DCMP) indicating a useful lifespan of the cartridge, so that the cartridge may be replaced at the end of the useful lifespan. In some examples, a system includes a respirator including a facepiece and an air blower; a removable contaminant capture cartridge installed within the respirator and configured to remove contaminants from the air as the air passes through the contaminant capture cartridge.