An exposure-indicating supplied air respirator system comprises a head top, a clean air supply source and a portable personal communication hub. The head top comprises a visor that is sized to fit over at least a user's nose and mouth, a position sensor secured to the head top, and a head top communication module. The clean air supply source is connected to the head top that supplies clean air to the interior of the head top. The position sensor detects whether the visor is in a closed position or in an open position and the head top communication module communicates the visor position to the personal communication hub. If the personal communication hub receives a signal indicating the presence of a hazard, and if the visor is in an open position, an alert is generated.

An exposure-indicating supplied air respirator system comprises a head top, a clean air supply source and a portable personal communication hub. The head top comprises a visor that is sized to fit over at least a user's nose and mouth, a position sensor secured to the head top, and a head top communication module. The clean air supply source is connected to the head top that supplies clean air to the interior of the head top. The position sensor detects whether the visor is in a closed position or in an open position and the head top communication module communicates the visor position to the personal communication hub. If the personal communication hub receives a signal indicating the presence of a hazard, and if the visor is in an open position, an alert is generated.

A remotely controlled air supply assembly for simulating emergency situations includes a self-contained breathing apparatus, such as used by firemen and scuba divers. At least one governor is configured to fluidically couple to and position in-line with tubing of the self-contained breathing apparatus. The at least one governor is configured to modify airflow through the tubing. The at least one governor is configured to communicate wirelessly. A controller is wirelessly coupled to the at least one governor. The controller is positioned to communicate at least one command to the at least one governor to compel the at least one governor to modify the airflow through the tubing to simulate an emergency situation.

Disclosed is a device for measuring the leakage rate of at least part of a protective breathing mask, the mask having at least one communication orifice between the interior, by way of an inlet, and the exterior, by way of an outlet. The communication orifice has an open position, in which a fluid can pass through the orifice between the inlet and outlet, and a closed position, preventing fluid passage through the orifice. The measurement device includes: a mechanism generating a pressure differential between the interior and exterior of the mask; a monitoring unit for the pressure generator; a unit measuring leakage of the communication orifice, in the closed position, at the level of the inlet and outlet, respectively; and a unit by which the pressure generator is fixed near the communication orifice.

Disclosed is a device for measuring the leakage rate of at least part of a protective breathing mask, the mask having at least one communication orifice between the interior, by way of an inlet, and the exterior, by way of an outlet. The communication orifice has an open position, in which a fluid can pass through the orifice between the inlet and outlet, and a closed position, preventing fluid passage through the orifice. The measurement device includes: a mechanism generating a pressure differential between the interior and exterior of the mask; a monitoring unit for the pressure generator; a unit measuring leakage of the communication orifice, in the closed position, at the level of the inlet and outlet, respectively; and a unit by which the pressure generator is fixed near the communication orifice.

A facemask configured to be used by multiple sized/shaped heads can include a primary, a secondary and a tertiary seal. In some embodiments, the primary seal is contact with the nose and cheek regions; the secondary seal is in contact with the chin region; and the tertiary seal is in contact with the cheek and chin regions. In some embodiments, the tertiary seal extends inwardly and outwardly when applied to the face. In some embodiments, the mask includes test scissors.

In some examples, a system includes an article of personal protective equipment (PPE) having at least one sensor configured to generate a stream of usage data; and an analytical stream processing component comprising: a communication component that receives the stream of usage data; a memory configured to store at least a portion of the stream of usage data and at least one model for detecting a safety event signature, wherein the at least one model is trained based as least in part on a set of usage data generated by one or more other articles of PPE of a same type as the article of PPE; and one or more computer processors configured to: detect the safety event signature in the stream of usage data based on processing the stream of usage data with the model, and generate an output in response to detecting the safety event signature.

In some examples, a system includes an article of personal protective equipment (PPE) having at least one sensor configured to generate a stream of usage data; and an analytical stream processing component comprising: a communication component that receives the stream of usage data; a memory configured to store at least a portion of the stream of usage data and at least one model for detecting a safety event signature, wherein the at least one model is trained based as least in part on a set of usage data generated by one or more other articles of PPE of a same type as the article of PPE; and one or more computer processors configured to: detect the safety event signature in the stream of usage data based on processing the stream of usage data with the model, and generate an output in response to detecting the safety event signature.

A fireman positioning system includes: a first radio wave emitting device and a second radio wave emitting device, spaced with a predetermined distance and utilized for correspondingly emitting a first frequency modulated signal and a second frequency modulated signal; and a position receiving device, carried or worn by a fireman, and utilized for receiving the first frequency modulating signal and the second frequency modulating signal, and can demodulate the first frequency modulated signal via a first carrier signal so as to obtain a first output signal, and demodulate the second frequency modulated signal via a second carrier signal so as to obtain a second output signal, wherein a phase difference is formed between the first output signal and the second output signal, and the position receiving device can determine a direction angle of the fireman relative to the two radio wave emitting devices via the phase difference.

A head simulator, for testing respirators, has a head simulator body (2) with a simulated oral aperture (6) and with a simulated oral cavity (4), which is located behind the simulated oral aperture (6) in the head simulator body. A loudspeaker (8) is arranged in the simulated oral cavity (4). An audio unit (20) is connected to the loudspeaker (8) for reproducing speech via the loudspeaker (8). The head simulator includes a simulated trachea (10), which is in connection with the simulated oral cavity (4) and opens into the simulated oral aperture (6). An air delivery device (30) is provided, which can be operated to allow air to flow through the simulated trachea (10) and the simulated oral aperture (6).