Dosimetry hearing protection device with time remaining warning

    公开(公告)号:US10856067B2

    公开(公告)日:2020-12-01

    申请号:US16593790

    申请日:2019-10-04

    Abstract: A hearing protection device configured to measure the noise exposure of a user and to provide a time remaining estimate until a maximum noise exposure level is achieved. Generally, the hearing protection device may comprise a sound sealing section, a microphone configured to generate a detected sound signal indicative of the measured sound level at the user's ear canal, a memory/storage configured to record the detected sound signal as sound exposure history, a timer configured to measure the amount of time the hearing protection device is exposed to sound, and a processor configured to receive a timer signal from the timer and the detected sound signal to calculate a time remaining estimate until reaching the maximum noise exposure level. Additionally, the maximum noise exposure level may be based on industry regulations or personalized hearing thresholds.

    EARMUFF WITH ELECTROACOUSTIC SHOCK ABSORBER
    5.
    发明申请

    公开(公告)号:US20180324517A1

    公开(公告)日:2018-11-08

    申请号:US15969293

    申请日:2018-05-02

    Abstract: A hearing protection earmuff may be configured to dampen vibrations at an interface. Generally, the hearing protection earmuff may comprise two ear cups, a headband attached to and connecting the ear cups, one or more sensors, a processor, an electroacoustic shock absorber, and an electromagnetic controller. Typically, the electromagnetic controller may be associated with an electroacoustic shock absorber and may be configured to control the dampening of the electroacoustic shock absorber. The dampening of the electroacoustic shock absorber may occur as a smart fluid changes viscosity in response to a signal received from the electromagnetic controller. In some embodiments, the clamping force between the headband and the ear cup may be varied by the electroacoustic shock absorber to minimize the vibrational impact on the user's ears. In some embodiments, the electroacoustic shock absorber may control the compressibility of the seal cushion located on each ear cup.

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