A portable oxygen generating system is provided that comprises a reaction chamber, a feed system for providing and controlling hydrogen peroxide solution to the reaction chamber, and a cooling/condensing system for cooling the hot oxygen and water vapor leaving the reactor and condensing and removing water. The portable chemical oxygen generation system produces humidified, breathable oxygen, that is substantially free of hydrogen peroxide and other contaminants, at a controlled flow and temperature over an extended period of time.

A system including a head-mounted device having a face shield; a respirator coupled to or embodied in the head mounted device; a light having a light intensity; a light detector, and a computing device communicatively coupled to the at least one light detector that receive from the light detector data indicting a type and intensity of light, and determine that the light matches a particular type of light and whether it exceeds a threshold, and on the basis of this determination, modifies the intensity of the light.

A system including a head-mounted device having a face shield; a respirator coupled to or embodied in the head mounted device; a light having a light intensity; a light detector, and a computing device communicatively coupled to the at least one light detector that receive from the light detector data indicting a type and intensity of light, and determine that the light matches a particular type of light and whether it exceeds a threshold, and on the basis of this determination, modifies the intensity of the light.

The invention relates to a modular, portable, air purifier device capable of supplying filtered or otherwise conditioned airflow to an individual. More specifically, the present invention provides an air purification system that allows for the remote detection and analysis of local ambient air quality and transmit that information to wirelessly connected devices.

A gas sensor includes a chemiresistor having responsive to a specific gas vapor to be sensed such that a resistance of the chemiresistor changes responsive to exposure to the specific gas vapor. A data collection circuit is coupled to the chemiresistor to sense the change in resistance responsive to the specific gas vapor. An antenna is coupled to the data collection circuit to receive power from an RF interrogation signal, power the data collection circuit with the received power, and transmit a signal from the data collection circuit representative of the resistance of the chemiresistor.

A system includes a negative pressure reusable respirator configured to be worn by a worker and to cover at least a mouth and a nose of the worker, a sensor configured to generate sensor data indicative of a characteristic of air within a work environment, and at least one computing device. The negative pressure reusable respirator includes at least one contaminant capture device configured to remove contaminants from air as the air is drawn through the contaminant capture device when the worker inhales. The at least one contaminant capture device is configured to be removable from the negative pressure reusable respirator. The at least one computing device configured to determine whether the at least one contaminant capture device is due for replacement, and perform one or more actions in response to determining the at least one contaminant capture device is due for replacement.

The present invention provides a mask. The mask includes a mask body, a filter module installed on the mask body, a light source and a photocatalyst plate. The filter module includes a cavity, and it is provided with an air inlet and an air outlet which are located in different regions of the filter module. The photocatalyst plate and the light source are both located in the cavity. The surface of the photocatalyst plate is covered with a photocatalyst coating, and the light emitted by the light source irradiates the photocatalyst plate. In the embodiment of the present invention, by placing the light source and the photocatalyst plate in the cavity of the filter module, the photocatalyst generates strong oxidizing substances under light irradiation, which substances can inactivate harmful substances. Therefore, by placing the light source and the photocatalyst plate in the cavity of the filter module, harmful substances entering the mask can be sterilized and inactivated. The harmful substances after the sterilization and inactivation are no longer harmful, so there is no secondary pollution caused by harmful substances dropping off. It solves the problem of secondary pollution caused by the harmful substances in existing masks.

The present invention provides a mask. The mask includes a mask body, a filter module installed on the mask body, a light source and a photocatalyst plate. The filter module includes a cavity, and it is provided with an air inlet and an air outlet which are located in different regions of the filter module. The photocatalyst plate and the light source are both located in the cavity. The surface of the photocatalyst plate is covered with a photocatalyst coating, and the light emitted by the light source irradiates the photocatalyst plate. In the embodiment of the present invention, by placing the light source and the photocatalyst plate in the cavity of the filter module, the photocatalyst generates strong oxidizing substances under light irradiation, which substances can inactivate harmful substances. Therefore, by placing the light source and the photocatalyst plate in the cavity of the filter module, harmful substances entering the mask can be sterilized and inactivated. The harmful substances after the sterilization and inactivation are no longer harmful, so there is no secondary pollution caused by harmful substances dropping off. It solves the problem of secondary pollution caused by the harmful substances in existing masks.

A smart mask includes a face covering, an attachment member, one or more sensors, and a controller. The face covering is configured to cover a face area of a wearer. The attachment member is configured to attach the face covering onto the face area of the wearer. The one or more sensors comprises an air quality sensor configured to obtain first data associated with nearby air quality or a breathing pattern sensor configured to obtain second data associated with the wearer's breathing pattern. The controller is configured to process the first data associated with nearby air quality to identify a current air quality, or process the second data obtained by the breathing pattern. In response to determining that the current air quality is worse than a predetermined threshold, or identifying a particular breathing pattern, the controller is configured to generate a notification, notifying the wearer.

A breathing system includes a facepiece and a regulator to deliver breathing gas to the facepiece. The regulator includes a sensor system including at least one sensor responsive to respiration of a user. The breathing system further includes a processor system in operative connection with the at least one sensor, a memory system in operative connection with the processor system and at least one algorithm stored in the memory system and executable by the processor system. The at least one algorithm is adapted, configured or programmed to determine at least one of a rate of respiration and a respiration volume from data from the at least one sensor. The algorithm is further adapted, configured or programmed to relate at least one of the rate of respiration and the respiration volume to a physiological state of the user.