发明授权
- 专利标题: Oscillating hot wire of hot film flow sensor
- 专利标题(中): 热膜流量传感器振荡热丝
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申请号: US10494410申请日: 2002-10-22
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公开(公告)号: US06901795B2公开(公告)日: 2005-06-07
- 发明人: Ahmed Mostafa Naguib , Yongxiang Li
- 申请人: Ahmed Mostafa Naguib , Yongxiang Li
- 申请人地址: US MI East Lansing
- 专利权人: Board of Trustees of Michigan State University
- 当前专利权人: Board of Trustees of Michigan State University
- 当前专利权人地址: US MI East Lansing
- 代理机构: Foster, Swift, Collins & Smith, P.C.
- 国际申请: PCT/US02/33914 WO 20021022
- 国际公布: WO03/03838 WO 20030508
- 主分类号: G01F1/68
- IPC分类号: G01F1/68 ; G01F1/684 ; G01F1/688 ; G01F1/692 ; G01F1/696 ; G01F1/698 ; G01P5/12
摘要:
This invention is a flow measurement device that has high spatial (less than 1.0×1.0 mm2) and temporal resolution (greater than 10 s to 100 s kHz) to measure flow properties in unsteady and direction-reversing conditions. The present invention can have an oscillating substrate, hot wire prongs, a hot wire attached to the hot wire prong, sensor leads from the prongs to a constant temperature anemometry circuit (CTA), means for the oscillating substrate to oscillate the substrate at a frequency greater than a characteristic cycle frequency of the flow to be measured, at a frequency less than a CTA bandwidth frequency, and such that a frequency and amplitude (Aw) of oscillation are sufficiently large to be detected, and means to obtain two measurements during an oscillation cycle when the hot wire is at its maximum oscillation velocity. Alternatively, the prongs can be eliminated and a hot wire or hot film can be directly applied to the oscillating substrate.
公开/授权文献
- US20040237645A1 Oscillating hot wire or hot film flow sensor 公开/授权日:2004-12-02