发明名称 |
Material movement sensing techniques |
摘要 |
One embodiment of the present invention provides several electromagnetic radiation reflectors within a volume that contains solid portions subject to movement relative to one another. At least a portion of the reflectors are positioned beneath one or more of the solid portions and move in response to movement of at least some of the solid portions. The volume is irradiated with electromagnetic radiation having one or more frequencies in a range from one kHz through one THz, and a reflection is detected of at least a portion of the electromagnetic radiation from each of the reflectors in response to this irradiation. Movement among the solid objects is evaluated from the reflection of each of the reflectors, which includes determining a spatial orientation of each one of the reflectors as a function of at least one of polarization selectivity and frequency selectivity.
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申请公布号 |
US7482969(B2) |
申请公布日期 |
2009.01.27 |
申请号 |
US20060453259 |
申请日期 |
2006.06.14 |
申请人 |
BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS |
发明人 |
HUFF GREGORY HILDING;BERNHARD JENNIFER T.;HAGNESS SUSAN;LAEFER DEBRA |
分类号 |
G01S13/89;G01S13/88 |
主分类号 |
G01S13/89 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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