The noise reduction and identification device adapts itself to a predetermined acoustic protection headset comprising two shells interconnected by means of mechanical links mounted on each shell removably at the end of two cylindrical shafts with collinear axes.

The device comprises an envelope made of elastic material of internal shape matching part of the external shape of at least one of the shells, said envelope having: openings corresponding to the shafts and around these openings, a thickness less than the distance between the mechanical connection mounted on a shell and said shell.

The elastic material constituting the casing has a coefficient of elasticity such that the deformation of the casing necessary for the opening corresponding to a shaft to deviate sufficiently from the shell for this shaft to come out entirely from this opening, is reversible.

The noise reduction and identification device adapts itself to a predetermined acoustic protection headset comprising two shells interconnected by means of mechanical links mounted on each shell removably at the end of two cylindrical shafts with collinear axes.

The device comprises an envelope made of elastic material of internal shape matching part of the external shape of at least one of the shells, said envelope having: openings corresponding to the shafts and around these openings, a thickness less than the distance between the mechanical connection mounted on a shell and said shell.

The elastic material constituting the casing has a coefficient of elasticity such that the deformation of the casing necessary for the opening corresponding to a shaft to deviate sufficiently from the shell for this shaft to come out entirely from this opening, is reversible.

The present invention provides devices and system useful for transporting infants, minimizing vibrations, noise, and associated with transport. Devices of the invention include a head gear assembly, one or more body support rolls for elevating portions of the infant's body, and a mattress system with a removable insert. The invention further provides methods of use associated with such devices, including methods of stabilizing a position of an infant, reducing shock or vibration to an infant during transportation, reducing shock, vibration, or noise exposure to an infant during transportation, reducing shock or vibration while providing elevation to specific portions of an infant during transportation, and reducing the risk of intraventricular hemorrhage and/or persistent pulmonary hypertension to an infant during transportation.

Sound capture and reproduction devices that can be mounted on hearing protective headsets, and are capable of using multiple microphones to determine the origins of one or more acoustic signals relative to the devices orientation, as well as methods of acquiring the origins of a combination of one or more acoustic signals from at least two microphones are described.

Sound capture and reproduction devices that can be mounted on hearing protective headsets, and are capable of using multiple microphones to determine the origins of one or more acoustic signals relative to the devices orientation, as well as methods of acquiring the origins of a combination of one or more acoustic signals from at least two microphones are described.

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.

In some examples, a system includes an article of personal protective equipment (PPE) comprising one or more sensors, the one or more sensors configured to generate usage data that is indicative of an operation of the article of PPE; and at least one computing device comprising a memory and one or more computer processors that: receive the usage data that is indicative of the operation of the article of PPE; apply the usage data to a safety learning model that predicts a likelihood of an occurrence of a safety event associated with the article of PPE based at least in part on previously generated usage data that corresponds to the safety event; and perform, based at least in part on predicting the likelihood of the occurrence of the safety event, at least one operation.

In some examples, a system includes an article of personal protective equipment (PPE) comprising one or more sensors, the one or more sensors configured to generate usage data that is indicative of an operation of the article of PPE; and at least one computing device comprising a memory and one or more computer processors that: receive the usage data that is indicative of the operation of the article of PPE; apply the usage data to a safety learning model that predicts a likelihood of an occurrence of a safety event associated with the article of PPE based at least in part on previously generated usage data that corresponds to the safety event; and perform, based at least in part on predicting the likelihood of the occurrence of the safety event, at least one operation.

The present disclosure provides a hearing protection method capable of blocking external high-sound-pressure-level energy, including: a second sound pressure energy threshold being greater than a first sound pressure energy threshold; when an external sound energy value is greater than the first sound pressure energy threshold and is less than the second sound pressure energy threshold, enabling a preset active noise cancellation function; and when the external sound energy value is greater than the second sound pressure energy threshold, disabling the preset active noise cancellation function, and blocking high-sound-pressure-level energy by means of passive noise cancellation. The present disclosure can block the external high-sound-pressure-level energy.

A smart hearing protection (SHP) device operatively connected to a human ear is disclosed. An internal sensor disposed on an inner side of the SHP device is configured to measure sound pressure level exposure of the human ear. An external sensor disposed on an outer side of the SHP device is configured to measure a sound pressure level external to the SHP device. The SHP includes a wireless transmitter operatively connected to both the internal and external sensors for transmitting data to a smart hearing software application for storing sensor data and monitoring sound pressure levels in connection with occupational safety and health.