发明名称 |
APPARATUS AND METHOD FOR DETECTING OBSTRUCTIONS IN PIPES OR CHANNELS |
摘要 |
<p>Apparatus and method of monitoring for obstructions in a pipe or channel. The method comprising the steps of: (1) transmitting a wave into a first end of the pipe or channel from a transmitting transducer at a first known location relative to the pipe or channel, wherein the frequency f of the transmitted wave varies in a predictable manner governed by the function f=f(t), where t is time; (2) noting the frequency f tr of the transmitted wave; (3) detecting any reflections of the transmitted wave travelling towards the first end of the pipe or channel at a receiving transducer at a second known location relative to the pipe or channel; (4) determining the frequency f rec of the reflected wave; (5) comparing the frequency f tr of the transmitted wave and the frequency f rec of the reflected wave, being transmitted from and being received by the respective transducers at the same time t; and 6)determining the distance L from the transmitting transducer to an obstruction and back to the receiving transducer from the difference .DELTA.f between the frequency f tr and the frequency f rec.</p> |
申请公布号 |
CA2843871(A1) |
申请公布日期 |
2014.09.14 |
申请号 |
CA20142843871 |
申请日期 |
2014.02.26 |
申请人 |
WESTON AEROSPACE LIMITED |
发明人 |
KULCZYK, M. WOJCIECH KONRAD |
分类号 |
G01S13/32;B64D37/32;G01S13/88 |
主分类号 |
G01S13/32 |
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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