FOREIGN OBJECT DETECTION USING INFRARED SENSING
First Claim
1. An apparatus for detecting an object, the apparatus comprising:
- at least one infrared (IR) sensor configured to output a thermal signal indicative of a temperature of an area;
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;
at least one correlation unit configured to correlate the time-differentiated thermal signal to a varying exposure level magnetic field; and
a determining unit configured to determine whether the 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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Accused Products
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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Citations
30 Claims
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1. An apparatus for detecting an object, the apparatus comprising:
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at least one infrared (IR) sensor configured to output a thermal signal indicative of a temperature of an area; 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; at least one correlation unit configured to correlate the time-differentiated thermal signal to a varying exposure level magnetic field; and a determining unit configured to determine whether the object is present in the area based on the correlation of the time-differentiated thermal signal to the varying exposure level magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for detecting an object, the method comprising:
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generating a time-differentiated thermal signal based on a thermal signal indicative of a temperature of an area; correlating the time-differentiated thermal signal to a varying exposure level magnetic field; and determining whether the object is present in the area based on the correlation of the time-differentiated thermal signal to the varying exposure level magnetic field. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus for detecting an object, the apparatus comprising:
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means for generating a time-differentiated thermal signal based on a thermal signal indicative of a temperature of an area; means for correlating the time-differentiated thermal signal to a varying exposure level magnetic field; and means for determining 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. - View Dependent Claims (28, 29)
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30. A computer readable storage medium comprising instructions that when executed by a processing device cause the processing device to perform a method for detecting an object, the method comprising:
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generating a time-differentiated thermal signal based on a thermal signal indicative of a temperature of an area; correlating the time-differentiated thermal signal to a varying exposure level magnetic field; and determining whether the 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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Specification