发明名称 |
METHOD FOR DETERMINING A POSITION OF AN OBJECT |
摘要 |
<p>A method for determining a mutual distance between two objects in a pipeline. The method comprises the steps of: providing a pipeline which is filled with a medium having an acoustic impedance different from that of the material of the pipeline and/or a medium present outside the pipeline; providing each of the two objects with a clock; synchronizing the clocks; periodically transmitting an acoustic signal from a first to a second one of the two objects; measuring the reception time of the acoustic signal; determining the delay time from the first to the second object; and calculating a traveled distance of the signal between the two objects on the basis of a propagation speed of the acoustic signal in the medium and the measured delay time of the acoustic signal.</p> |
申请公布号 |
WO2004074633(A1) |
申请公布日期 |
2004.09.02 |
申请号 |
WO2004NL00133 |
申请日期 |
2004.02.23 |
申请人 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO;DE JONG, ALWIN |
发明人 |
DE JONG, ALWIN |
分类号 |
E21B47/01;E21B47/09;G01V1/40;(IPC1-7):E21B47/09;G01V1/44 |
主分类号 |
E21B47/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|