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JPS55154478A - Ultrasonic wave measuring apparatus - Google Patents

Ultrasonic wave measuring apparatus

Info

Publication number
JPS55154478A
JPS55154478A JP6302079A JP6302079A JPS55154478A JP S55154478 A JPS55154478 A JP S55154478A JP 6302079 A JP6302079 A JP 6302079A JP 6302079 A JP6302079 A JP 6302079A JP S55154478 A JPS55154478 A JP S55154478A
Authority
JP
Japan
Prior art keywords
gain
time
time variable
capacitor
controlled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6302079A
Other languages
Japanese (ja)
Other versions
JPS6044626B2 (en
Inventor
Hiroshi Minami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP54063020A priority Critical patent/JPS6044626B2/en
Publication of JPS55154478A publication Critical patent/JPS55154478A/en
Publication of JPS6044626B2 publication Critical patent/JPS6044626B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/529—Gain of receiver varied automatically during pulse-recurrence period

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE:To automatically control time variable gains adequately in correspondence to various conditions by controlling the gain of a time variable gain amplifier according to the gain of the AGC which makes the receiving signal at a constant level. CONSTITUTION:The switch 27 of a time variable gain control signal generating circuit 30 closes and opens at the wave transmission and reception and the gain of a time variable gain control amplifier 22 is increased with time by the discharge voltage of a capacitor 25 decreasing with time according to the time constant determined by the capacitor 25 and resistance 26, whereby the amplification of the receiving pulses from a remote distance target, etc. is controlled. On the other hand, the AGC voltage from an automatic gain control signal generating circuit 40 for the AGC28 which adjusts the receiving pulses to a constant level irrespective of reflectances, etc. is applied to one end of the resistance 26, by which the final discharge voltage of the capacitor 25 is controlled and the amplifier 22 is controlled to the gain of less change with time or fixed gain for a target of a close distance or of a high reflectance, thus the proper time variable controlling is automatically accomplished and the first reflecting wave of a high level is discriminated even for the close distance target. In this way, the accurate ultrasonic measurement is accomplished.
JP54063020A 1979-05-21 1979-05-21 Ultrasonic measuring device Expired JPS6044626B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54063020A JPS6044626B2 (en) 1979-05-21 1979-05-21 Ultrasonic measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54063020A JPS6044626B2 (en) 1979-05-21 1979-05-21 Ultrasonic measuring device

Publications (2)

Publication Number Publication Date
JPS55154478A true JPS55154478A (en) 1980-12-02
JPS6044626B2 JPS6044626B2 (en) 1985-10-04

Family

ID=13217214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54063020A Expired JPS6044626B2 (en) 1979-05-21 1979-05-21 Ultrasonic measuring device

Country Status (1)

Country Link
JP (1) JPS6044626B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925489U (en) * 1982-08-10 1984-02-17 サンデン株式会社 Ultrasonic receiving circuit
FR2554579A1 (en) * 1983-11-04 1985-05-10 Endress Hauser Gmbh Co SONIC OR ULTRASONIC DEVICE FOR DISTANCE MEASUREMENT
JPH03118422A (en) * 1989-09-30 1991-05-21 Tokyo Keiso Co Ltd Liquid level detecting apparatus
CN102155970A (en) * 2011-03-18 2011-08-17 松原市环鼎科贸有限公司 Ultrasonic liquid-level monitoring system for oil-field fracturing additive in tank

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337915U (en) * 1989-08-22 1991-04-12

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925489U (en) * 1982-08-10 1984-02-17 サンデン株式会社 Ultrasonic receiving circuit
FR2554579A1 (en) * 1983-11-04 1985-05-10 Endress Hauser Gmbh Co SONIC OR ULTRASONIC DEVICE FOR DISTANCE MEASUREMENT
JPS60174972A (en) * 1983-11-04 1985-09-09 エンドレス・ウント・ハウザ−・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・ウント・コンパニ− Sound wave or ultrasonic range finder
JPH03118422A (en) * 1989-09-30 1991-05-21 Tokyo Keiso Co Ltd Liquid level detecting apparatus
CN102155970A (en) * 2011-03-18 2011-08-17 松原市环鼎科贸有限公司 Ultrasonic liquid-level monitoring system for oil-field fracturing additive in tank

Also Published As

Publication number Publication date
JPS6044626B2 (en) 1985-10-04

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