System and method for measuring a resonance frequency of a tube

Abstract

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 delay a 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; and an indicating unit for indicating an oscillation frequency corresponding to the maximal variation of the time delay, being a resonance frequency of the tube.

1 . A system for measuring at least one resonance frequency of a tube, the system comprising:
 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; and   an indicating unit for outputting a graph to reflect a correlation between the plurality of oscillation frequencies and the time delays, wherein, in at least one specific oscillation frequency range of the plurality of oscillation frequencies, each oscillation frequency corresponds to a variation of the time delay, and, in the at least one specific oscillation frequency range, an oscillation frequency corresponding to a maximal variation of the time delay is the at least one resonance frequency of the tube.   
     
     
         2 . A method of measuring at least one resonance frequency of a tube, the method comprising:
 oscillating for oscillating the tube at a plurality of oscillation frequencies, respectively;   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; and   indicating to output a graph to reflect a correlation between the plurality of oscillation frequencies and the time delays, wherein, in at least one specific oscillation frequency range of the plurality of oscillation frequencies, each oscillation frequency corresponds to a variation of the time delay, and, in the at least one specific oscillation frequency range, an oscillation frequency corresponding to a maximal variation of the time delay is the at least one resonance frequency of the tube.