FOREIGN OBJECT DETECTION USING INFRARED SENSING

    公开(公告)号:US20180239055A1

    公开(公告)日:2018-08-23

    申请号:US15440516

    申请日:2017-02-23

    Abstract: Certain aspects of the present disclosure provide methods and apparatuses for detecting foreign objects via infrared sensing. One example apparatus generally includes at least one infrared (IR) sensor configured to output a thermal signal indicative of a temperature of an area. The apparatus further includes at least one time differentiator coupled to the at least one IR sensor, the at least one time-differentiator being configured to generate a time-differentiated thermal signal based on the thermal signal. The apparatus further includes at least one correlation unit configured to correlate the time-differentiated thermal signal to a varying exposure level magnetic field. The apparatus further includes a determining unit configured to determine whether an object is present in the area based on the correlation of the time-differentiated thermal signal to the varying exposure level magnetic field.

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