GB711469A - Pulse echo locating apparatus employing pulses of acoustic vibrations, more particularly for locating shoals of fish or like purposes - Google Patents

Pulse echo locating apparatus employing pulses of acoustic vibrations, more particularly for locating shoals of fish or like purposes

Info

Publication number
GB711469A
GB711469A GB1805250A GB1805250A GB711469A GB 711469 A GB711469 A GB 711469A GB 1805250 A GB1805250 A GB 1805250A GB 1805250 A GB1805250 A GB 1805250A GB 711469 A GB711469 A GB 711469A
Authority
GB
United Kingdom
Prior art keywords
disc
echo
arm
pulse
contacts
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.)
Expired
Application number
GB1805250A
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.)
ELAC Electroacustic GmbH
Original Assignee
ELAC Electroacustic GmbH
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 ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
Publication of GB711469A publication Critical patent/GB711469A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/96—Sonar systems specially adapted for specific applications for locating fish

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

711.469. Automatic control systems. ELECTROACUSTIC GES. July 19, 1950 [July 19, 1949; March 30, 1950; May 12, 1950; June 12, 1950], No. 18052/50. Class 38(4) [Also in Group XXXVIII] In an underwater pulse-echo ranging system for indicating echoes from reflecting bodies within a selectable range increment (see Group XXXVIII) the range increment is displayed on the high-speed time base of a cathode-ray tube and the time interval between the transmission of a pulse and initiation of the time base is automatically controlled by the echo pulse so that the echo is displayed at a predetermined position on the time base. The transmitter is triggered periodically by a switch operated by a rotating cam disc, Fig. 3 (not shown), and the time base is initiated by the closure of a second switch whose angularly position around the periphery of the cam disc is controlled by the angular position of a disc 25 bearing two semi-circular contacts 23, 24 over which an arm 21 rotates synchronously with the cam disc. Contacts 23, 24 are connected to H.T. supplies and also via condensers 32, 33 to the coils of relays 30, 31 whose associated contacts 28, 29 are in series with the two field windings of a reversible D.C. motor 27 which drives disc 25. A received sonic echo pulse is converted into a corresponding electrical pulse by an electroaccoustic transducer 16 and applied to trigger a thyratron 17 whose anode is connected to the rotating arm 21. If an echo is received when arm 21 is contacting 23, condenser 32 is discharged and relay 30 operates causing disc 25 to rotate in one direction and similarly the disc is rotated in the opposite direction when arm 21 is contacting 24 so that the disc assumes an equilibrium condition such that arm 21 is intermediate between contacts 23, 24 at the time of echo reception, the angular position of the disc then indicating 'the range of the echo.
GB1805250A 1949-07-19 1950-07-19 Pulse echo locating apparatus employing pulses of acoustic vibrations, more particularly for locating shoals of fish or like purposes Expired GB711469A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE944477T 1949-07-19
DEE904A DE940034C (en) 1949-07-19 1950-03-30 Echosounder system with display through a brown tube
DEE1173A DE951136C (en) 1949-07-19 1950-05-12 Method and device for echo sounding with underwater sound using a Braun tube as display device
DEE1328A DE950053C (en) 1949-07-19 1950-06-12 Device for echo sounding with underwater sound with acoustic display

Publications (1)

Publication Number Publication Date
GB711469A true GB711469A (en) 1954-07-07

Family

ID=42791097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1805250A Expired GB711469A (en) 1949-07-19 1950-07-19 Pulse echo locating apparatus employing pulses of acoustic vibrations, more particularly for locating shoals of fish or like purposes

Country Status (4)

Country Link
BE (1) BE503067A (en)
DE (4) DE944477C (en)
FR (1) FR1027967A (en)
GB (1) GB711469A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157436A (en) * 1984-04-06 1985-10-23 Bygg Och Transportekonomie Ab Detecting obstacles in the operation of remote-controlled machines

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975073C (en) * 1953-12-17 1961-08-03 Atlas Werke Ag Circuit arrangement for an echo-sounder display device
DE1211518B (en) * 1955-04-05 1966-02-24 Phil Nat Siegfried Fahrentholz Calibratable acoustic echo sounder device and method of using it
US3035245A (en) * 1955-04-27 1962-05-15 Jr Louis R Padberg Echo ranging system
DE1087051B (en) * 1955-05-02 1960-08-11 Electroacustic Gmbh Device for displaying the direction and distance of an object with underwater sound on the screen of a cathode ray tube
DE1141567B (en) * 1956-08-20 1962-12-20 Phil Nat Siegfried Fahrentholz Echosounder device with a luminescent Braun tube
BE567308A (en) * 1957-05-03
DE1272186B (en) * 1957-10-04 1968-07-04 Dr Siegfried Fahrentholz Echosounder device with display of the echo on a cathode ray tube
DE1153300B (en) * 1958-12-11 1963-08-22 Phil Nat Siegfried Fahrentholz Echosounder device with at least one Braun tube
DE1289460B (en) * 1963-12-18 1969-02-13 Smith & Sons Ltd S Echosounder for underwater sound

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1648058A (en) * 1925-11-25 1927-11-08 American Telephone & Telegraph Electrovision
GB467997A (en) * 1935-12-27 1937-06-28 Marconi Wireless Telegraph Co Improvements in or relating to echo sounding apparatus
DE767425C (en) * 1939-05-14 1952-08-28 Atlas Werke Ag Method and device for determining the direction and distance of objects using the echo method
US2473974A (en) * 1944-05-18 1949-06-21 Schuck Oscar Hugo Underwater sound detecting and indicating system
US2484618A (en) * 1944-08-26 1949-10-11 Bell Telephone Labor Inc Wave receiving system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157436A (en) * 1984-04-06 1985-10-23 Bygg Och Transportekonomie Ab Detecting obstacles in the operation of remote-controlled machines

Also Published As

Publication number Publication date
BE503067A (en) 1951-05-31
DE944477C (en) 1956-06-14
DE950053C (en) 1956-10-04
DE940034C (en) 1956-03-08
DE951136C (en) 1956-10-25
FR1027967A (en) 1953-05-18

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