THERMAL AND METAL DETECTION DEVICE
    2.
    发明公开

    公开(公告)号:US20240353267A1

    公开(公告)日:2024-10-24

    申请号:US18136592

    申请日:2023-04-19

    Applicant: Robert Navarro

    Inventor: Robert Navarro

    Abstract: A thermal and metal detection device for attaching to a wearer and alerting the wearer of the thermal sensor when detecting a thermal signature of a person includes a housing including a front wall, a back wall, and a perimeter wall. An infrared sensor is coupled to the housing and detects the thermal signature of a person within a vicinity of the user. A metal sensor is coupled to the housing and detects a metal object within the vicinity of the user. A circuit board is electrically coupled to the infrared sensor and to the metal sensor. A plurality of securing members is coupled to the housing. Each of the securing members secures the housing to an object proximate to the user such that only one of the securing members selectively secures the housing to the object when in-use.

    Apparatus for and method of measuring surface

    公开(公告)号:US11994381B2

    公开(公告)日:2024-05-28

    申请号:US17182797

    申请日:2021-02-23

    Applicant: Senfit Oy

    CPC classification number: G01B15/04 G01N22/00 G01N33/20 G01S7/4056 G01S13/06

    Abstract: An apparatus for measuring a surface comprises first sensors, which are distributed two-dimensionally in space, said first sensors interacting with the surface in a contactless manner using a microwave range of electromagnetic signals, and the first sensors receive at least two of the microwave signals of the interaction with information relating to distances between the sensors and the surface as a reflection, the microwave signals of the interaction representing both dimensions of the space of two-dimensional distribution of the first sensors. A data processing unit receives said information on the distances, and determines at least one geometrical parameter of the surface on the basis of the information.

    Laser induced breakdown spectroscopy (LIBS) apparatus for the detection of mineral and metal contamination in liquid samples

    公开(公告)号:US09958395B2

    公开(公告)日:2018-05-01

    申请号:US15424931

    申请日:2017-02-06

    CPC classification number: G01N21/718 G01J3/443 G01N33/20 H01S5/0615

    Abstract: This invention discloses an improved laser induced breakdown spectroscopy (LIBS) apparatus and method for the detection of mineral and metal contamination in liquid samples. The mineral and metal contaminant is first collected by filtering the liquid sample with a membrane filter. The membrane filter with the mineral and metal contaminant is then measured by a LIBS apparatus. The LIBS apparatus is based on a high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz (or even higher) range. When the laser beam hits the surface of the membrane filter, it generates several thousands of micro-plasma emissions per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasma emissions. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the level of detection (LOD).

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