Title:
PROPAGATION MEASUREMENT METHOD, GAS FLOW VELOCITY MEASUREMENT METHOD, PROPAGATION MEASUREMENT PROGRAM, GAS FLOW VELOCITY MEASUREMENT PROGRAM, GAS FLOW VELOCITY MEASUREMENT DEVICE, AND OXYGEN CONCENTRATOR
Document Type and Number:
Japanese Patent JP2022138958
Kind Code:
A
Abstract:
To provide a propagation measurement method which allows for accurately measuring propagation time of an ultrasonic wave by accurately grasping the propagation state of the ultrasonic wave.SOLUTION: A propagation measurement method provided herein comprises: alternately transmitting an ultrasonic pulse group comprising multiple pulses to propagate the same in a measurement flow path; setting an initial measurement waiting time value (S21); detecting a reference pulse reception time; and deriving the propagation time of the pulses in the measurement flow path from the sum of the initial measurement waiting time value and the reference pulse reception time (S22).SELECTED DRAWING: Figure 6
Inventors:
MIZOTA IWAO
Application Number:
JP2021039136A
Publication Date:
September 26, 2022
Filing Date:
March 11, 2021
Export Citation:
Assignee:
FUKUDA DENSHI KK
International Classes:
G01N29/024; G01F1/66; G01P5/24; G01S7/526
Attorney, Agent or Firm:
Masashi Sahara
Kazuki Yokota
Kazuki Yokota