PORTABLE DEVICE FOR DETECTING AND MEASURING PARTICLES ENTRAINED IN THE AIR
    1.
    发明申请
    PORTABLE DEVICE FOR DETECTING AND MEASURING PARTICLES ENTRAINED IN THE AIR 审中-公开
    用于检测和测量在空气中进入的颗粒的便携式设备

    公开(公告)号:US20170023457A1

    公开(公告)日:2017-01-26

    申请号:US15135152

    申请日:2016-04-21

    Abstract: A portable ambient air quality monitor having an enclosure to enclose and protect the monitor from an ambient environment and an airflow intake for controllably allowing ambient air to enter the monitor. A photodiode is disposed at a location downstream from a fan. The airflow from the fan is laminarized by a mesh or baffle to allow a thin stream of air to flow over the photodiode. A sensing region is defined by an intersection of an airflow sampling path and an optical path. The sensing region is also disposed above the photodiode. The airflow sampling path is configured to receive laminar airflow from the airflow intake and for directing the laminar airflow into the sensing region. A light beam is generated from a laser to reflect the light beam for reducing the required area of the sensing region to detect and measure the particles floating in the ambient air.

    Abstract translation: 一种便携式环境空气质量监测器,具有外壳以封闭和保护监视器免受环境环境和气流入口,以可控制地允许环境空气进入监视器。 光电二极管设置在风扇下游的位置处。 来自风扇的气流被网状物或挡板层压,以允许薄的空气流在光电二极管上流动。 感测区域由气流采样路径和光路的交叉点限定。 感测区域也设置在光电二极管的上方。 气流采样路径被配置为从气流入口接收层流气流并且用于将层流气流引导到感测区域中。 从激光产生光束以反射光束以减小感测区域的所需面积,以检测和测量浮在环境空气中的颗粒。

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