GB1378248A - Ultrasonic transmitting and receiving device - Google Patents

Ultrasonic transmitting and receiving device

Info

Publication number
GB1378248A
GB1378248A GB1731572A GB1731572A GB1378248A GB 1378248 A GB1378248 A GB 1378248A GB 1731572 A GB1731572 A GB 1731572A GB 1731572 A GB1731572 A GB 1731572A GB 1378248 A GB1378248 A GB 1378248A
Authority
GB
United Kingdom
Prior art keywords
horn
opening
reflector
frame
ultrasonic
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
GB1731572A
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of GB1378248A publication Critical patent/GB1378248A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/91—Portable sonar devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

1378248 Horns MATSUSHITA ELECTRIC WORKS Ltd 14 April 1972 [31 May 1971] 17315/72 Heading H4X A device for transmitting and receiving ultrasonic energy is of two part construction each part comprising a horn having an ultrasonic transducer element disposed in the throat and a reflector at the outer opening inclined at about 45 degrees with respect to the horn axis. A combined transmit-receive device 27 for ultrasonic waves comprises a mounting base 1 having two L-shaped end brackets 4, 4<SP>1</SP> into the holes 5, 5<SP>1</SP> of which are fitted end stubs 10, 10<SP>1</SP> of a frame 8. A semicylindrical lid 13 covered with felt 12 closes a rear opening 11 of the frame 8. The frame 8 has a pair of openings 9, 9<SP>1</SP> shielded form one another by plates 14. A sound transmitter 15 comprises an ultrasonic piezoelectric element 20 at the throat 16 of a horn 18. Ultrasonic waves, preferably at the resonance frequency of the element 20, are propagated from the throat 16 along the axis of the horn 18 and are reflected by a reflector 19 at right angles to the horn axis. A sound receiver 21 has a reflector 25 at the opening of a horn 24. The horn throat 22 accomodates a piezoelectric element 26, identical with element 20. In use, ultrasonic waves generated by the element 20 are reflected by the reflector 19 through an opening 9 in the frame 8. Ultrasonic waves reflected from some object to be detected and returning through the opening 9<SP>1</SP> are reflected by the reflector 25 and received by the piezoelectric element 26. The transmit-receive device 27 is rotatable about the stubs 10, 10<SP>1</SP>. Bent tabs 28, 28<SP>1</SP> prevent free rotation. A cover 29 has a metal screen 32 fitting over an opening 30 which confronts the openings 9, 9<SP>1</SP>. A decorative plate 33 fits over the outside of the cover frame 31. The ultrasonic signals received by the piezoelectric element 26 are converted into electric signals which may operate a switch (not shown).
GB1731572A 1971-05-31 1972-04-14 Ultrasonic transmitting and receiving device Expired GB1378248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971045494U JPS485606U (en) 1971-05-31 1971-05-31

Publications (1)

Publication Number Publication Date
GB1378248A true GB1378248A (en) 1974-12-27

Family

ID=12720939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1731572A Expired GB1378248A (en) 1971-05-31 1972-04-14 Ultrasonic transmitting and receiving device

Country Status (4)

Country Link
US (1) US3835254A (en)
JP (1) JPS485606U (en)
DE (2) DE2226306C3 (en)
GB (1) GB1378248A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT351783B (en) * 1976-12-20 1979-08-10 Akg Akustische Kino Geraete ULTRASONIC CONVERTER
JPS545009U (en) * 1977-06-14 1979-01-13
US4288867A (en) * 1978-11-14 1981-09-08 Alarm Device Manufacturing Company Area intrusion adjustable detector unit
FR2581821B1 (en) * 1985-05-10 1988-10-07 France Etat Armement METHOD FOR USING A TONPILZ TYPE PIEZOELECTRIC TRANSDUCER ALTERNATIVELY AS A BROADBAND TRANSMITTER AND PIEZOELECTRIC TRANSDUCERS
US6628568B1 (en) 2002-03-19 2003-09-30 Bha Group Holdings, Inc. System and method for verification of acoustic horn performance

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1982341A (en) * 1931-03-24 1934-11-27 Westinghouse Electric & Mfg Co Traffic control system
US2542594A (en) * 1946-05-13 1951-02-20 Tiffany Carter Supersonic communication system
US2611445A (en) * 1948-01-29 1952-09-23 Stromberg Carlson Co Echo ranging system
US2815087A (en) * 1955-03-11 1957-12-03 Delort Rene Speaker cabinet
US3046544A (en) * 1960-02-12 1962-07-24 Gen Railway Signal Co Mounting means for electro-ultrasonic transducers
US3087140A (en) * 1960-06-20 1963-04-23 Gen Railway Signal Co Ultrasonic vehicle detection system
US3199074A (en) * 1962-06-08 1965-08-03 Gen Precision Inc Automobile traffic flow analyzer
US3396366A (en) * 1965-05-18 1968-08-06 Lab For Electronics Inc Ultrasonic wave directive assembly
US3343167A (en) * 1966-10-21 1967-09-19 Sperry Rand Corp Object detection system
AT295618B (en) * 1969-04-25 1972-01-10 Akg Akustische Kino Geraete Headphones, in particular for the stereophonic reproduction of sound events

Also Published As

Publication number Publication date
US3835254A (en) 1974-09-10
JPS485606U (en) 1973-01-23
DE2226306B2 (en) 1974-03-28
DE2226306A1 (en) 1972-12-07
DE2226306C3 (en) 1974-12-19
DE7220280U (en) 1973-01-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee