Maarten Leonardus Christian Brand,Liang Dong,Juan Du
申请号:
US15934213
公开号:
US20180209840A1
申请日:
2018.03.23
申请国别(地区):
US
年份:
2018
代理人:
摘要:
The invention proposes a system for measuring a resonance frequency of a tube. The system comprises:an oscillating unit for oscillating the tube at a plurality of oscillation frequencies, respectively;a detecting unit for detecting a time delay of transmitting a pressure pulse from a first position to a second position in the tube when the tube is oscillated at each oscillation frequency, wherein, when the tube is oscillated at each oscillation frequency in a specific oscillation frequency range of the plurality of oscillation frequencies, the detecting unit detects a variation of the time delaya determining unit for determining a maximal variation of the time delay when the tube is oscillated at the oscillation frequencies in the specific oscillation frequency range; andan indicating unit for indicating an oscillation frequency corresponding to the maximal variation of the time delay, being a resonance frequency of the tube.