SENSOR-ENABLED WIRELESS RESPIRATOR FIT-TEST SYSTEM

    公开(公告)号:US20220134147A1

    公开(公告)日:2022-05-05

    申请号:US17310867

    申请日:2020-02-18

    Abstract: In some examples, a system includes a respirator; a sensor operatively coupled to the respirator comprising: an electric circuit configured to determine a change in at least one electrical characteristic of a sensing element, wherein the change in the at least one electrical characteristic is based at least in part on detection of a particulate matter; and a computing device configured to: output for display at least one graphical element in a set of graphical elements; in response to receiving the data that is based at least in part on the change in the at least one electrical characteristic of the sensing element, determine, without counting particles of the particulate matter, whether the fit test was satisfied; and in response to the determination whether the fit test was satisfied, perform at least one operation that is based at least in part on the determination whether the fit test was satisfied.

    Sensor And Sensing System For Respirator Fit-Test Method

    公开(公告)号:US20210001066A1

    公开(公告)日:2021-01-07

    申请号:US16642171

    申请日:2018-08-31

    Abstract: There is provided a sensor including a housing, where the housing has an opening configured to receive a sensing element; an electric circuit operably connected to the housing, where the electric circuit is configured to detect at least one electrical characteristic across at least one pair of electrodes positioned on the sensing element; at least one gas-moving element in electrical communication with the electric circuit; and a reader in communication with the electric circuit, where the reader is configured to compare information about a gas volume external to the housing with information about a gas volume within the housing.

    Ammonia Sensor Including Thermal Indicator Component and Acid-Functional Sorbent, and Method of Use

    公开(公告)号:US20220390400A1

    公开(公告)日:2022-12-08

    申请号:US17708533

    申请日:2022-03-30

    Abstract: The present disclosure provides an ammonia sensor and method of use. The sensor includes: at least one thermal indicator component independently selected from an electronic thermal sensor, an irreversible temperature indicator, and a heat-shrinkable film; an acid-functional porous sorbent in thermal contact with the at least one thermal indicator component; and an acid having a boiling point above 120° C. and a pKa of no greater than 2.5. The acid is impregnated in or covalently attached to the porous sorbent. The method includes: placing an ammonia sensor in contact with a container holding a volume of ammonia; and monitoring the ammonia sensor for a detectable response from the at least one thermal indicator component due to contact of ammonia with the acid that generates thermal energy sufficient to cause the response.

Patent Agency Ranking