KR830002222A - Ultrasonic flowmeter - Google Patents

Ultrasonic flowmeter Download PDF

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Publication number
KR830002222A
KR830002222A KR1019800000670A KR800000670A KR830002222A KR 830002222 A KR830002222 A KR 830002222A KR 1019800000670 A KR1019800000670 A KR 1019800000670A KR 800000670 A KR800000670 A KR 800000670A KR 830002222 A KR830002222 A KR 830002222A
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KR
South Korea
Prior art keywords
phase difference
difference detection
detection circuit
signal
flow meter
Prior art date
Application number
KR1019800000670A
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Korean (ko)
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KR830001218B1 (en
Inventor
신조오 다까다
Original Assignee
이와다 가즈오
도오쿄오 시바우라덴기 가부시기 가이샤
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Application filed by 이와다 가즈오, 도오쿄오 시바우라덴기 가부시기 가이샤 filed Critical 이와다 가즈오
Priority to KR1019800000670A priority Critical patent/KR830001218B1/en
Publication of KR830002222A publication Critical patent/KR830002222A/en
Application granted granted Critical
Publication of KR830001218B1 publication Critical patent/KR830001218B1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

내용 없음No content

Description

초음파 유량계Ultrasonic flowmeter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this content is publicly disclosed, the full text is not included.

제1도는 주지의 초음파 유량계의 개략 구성도.1 is a schematic configuration diagram of a known ultrasonic flow meter.

제2도는 본 발명의 1실시예에 관한 초음파 유량계의 블록 구성도.2 is a block diagram of an ultrasonic flow meter according to an embodiment of the present invention.

제3도는 본 발명의 다른 실시예에 의한 초음파 유량계의 블록구성도이다.3 is a block diagram of an ultrasonic flow meter according to another embodiment of the present invention.

Claims (5)

유체중에 연속파 또는 버어스트파의 초음파를 송신하는 송신소자와, 상기 소자와 일정한 간격을 두고 유체중을 전파한 초음파를 수신하는 수신소자와, 상기 송신소자의 송신신호와 상기 스신소자의 수신신호의 위상차를 주파수 혼합수단에 의하여 증대된 시간간격으로 바꾸어 놓아서 검출하는 위상차 검출회로와, 상기 위상차 검출회로출력을 적절히 처리하여서 유량에 비례한 신호를 출력하는 처리회로를 구비한 것을 특징으로하는 초음파 유량계.The phase difference between the transmitting element that transmits ultrasonic waves of continuous or burst waves in the fluid, the receiving element that receives ultrasonic waves propagating in the fluid at regular intervals from the element, and the transmission signal of the transmitting element and the received signal of the sine element And a phase difference detection circuit that detects by changing the time interval increased by the frequency mixing means, and a process circuit that appropriately processes the phase difference detection circuit output and outputs a signal proportional to the flow rate. 특허청구의 범위 제1항에 기재한 초음파유량계에 있어서, 상기 위상차검출회로는, 국부 발진신호와 송신신호 및 수신신호를 혼합하는 적어도 2개의 혼합회로와, 상기 혼합회로의 각 출력의 시간차를 검출하는 비교회로를 구비한 것을 특징으로 하는 초음파 유량계.In the ultrasonic flowmeter according to claim 1, the phase difference detection circuit detects at least two mixing circuits mixing a local oscillation signal, a transmission signal and a reception signal, and a time difference between each output of the mixing circuit. An ultrasonic flow meter comprising a comparison circuit. 특허청구의 범위 제1항에 기재한 초음파 유량계에 있어서, 상기 처리회로는 상기 위상차 검출회로 출력을 펄스화하여서 취하고 기억하는 카운터를 구비한 것을 특징으로 하는 초음파 유량계.The ultrasonic flow meter according to claim 1, wherein the processing circuit has a counter for taking and storing the phase difference detection circuit output as a pulse. 특허청구의 범위 제1항에 기재의 초음파 유량계에 있어서, 상기 처리회로는 상기 위상차 검출회로 출력을 취하고 기억한 위에, 이것을 평가, 연산하는 기억, 연산회로를 구비한 것을 특징으로 하는 초음파 유량계.The ultrasonic flow meter according to claim 1, characterized in that the processing circuit comprises a memory for calculating and evaluating and calculating the phase difference detection circuit output after taking and storing the phase difference detection circuit output. 특허청구의 범위 제2항 기재의 초음파 유량계에 있어서, 상기 국부발진신호는 송신신호를 체강하는 회로에 의하여 얻어지는 것을 특징으로하는 초음파유량제.The ultrasonic flow meter according to claim 2, wherein the local oscillation signal is obtained by a circuit that stiffens the transmission signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: Disclosure is based on the original application.
KR1019800000670A 1980-02-20 1980-02-20 Ultrasonic flow meter KR830001218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019800000670A KR830001218B1 (en) 1980-02-20 1980-02-20 Ultrasonic flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019800000670A KR830001218B1 (en) 1980-02-20 1980-02-20 Ultrasonic flow meter

Publications (2)

Publication Number Publication Date
KR830002222A true KR830002222A (en) 1983-05-23
KR830001218B1 KR830001218B1 (en) 1983-06-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019800000670A KR830001218B1 (en) 1980-02-20 1980-02-20 Ultrasonic flow meter

Country Status (1)

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KR (1) KR830001218B1 (en)

Also Published As

Publication number Publication date
KR830001218B1 (en) 1983-06-24

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