JPS5461566A - Underwater locating device for diver - Google Patents

Underwater locating device for diver

Info

Publication number
JPS5461566A
JPS5461566A JP12753677A JP12753677A JPS5461566A JP S5461566 A JPS5461566 A JP S5461566A JP 12753677 A JP12753677 A JP 12753677A JP 12753677 A JP12753677 A JP 12753677A JP S5461566 A JPS5461566 A JP S5461566A
Authority
JP
Japan
Prior art keywords
diver
bomb
generated
sounds
distance
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.)
Pending
Application number
JP12753677A
Other languages
Japanese (ja)
Inventor
Masatada Fukushima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12753677A priority Critical patent/JPS5461566A/en
Publication of JPS5461566A publication Critical patent/JPS5461566A/en
Pending 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction

Landscapes

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

Abstract

PURPOSE:To make it possible to continuously locate a diver without any portable device of the diver but in sufficient accuracy by detecting the acoustic sounds which are generated from the breathing bomb brought by the diver. CONSTITUTION:When a diver breathes in water, specific sounds S are generated from an air supply bomb 1. These sounds are detected first and second directional sensors 2A and 2B which are carried on a vessel, so that they are convertd into signals corresponding to their respective direction theta1 and theta2. On the other hand, signals proportional to the distance 2d between the sensors 2A and 2B are generated from a coefficient device 5, and are introduced into an operational device together with the detectors 2A and 2B to obtain the distance of the bomb 1 in the x and y coordinates so that the bomb 1 and accordingly the diver can be located in an x-y plotter 10.
JP12753677A 1977-10-26 1977-10-26 Underwater locating device for diver Pending JPS5461566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12753677A JPS5461566A (en) 1977-10-26 1977-10-26 Underwater locating device for diver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12753677A JPS5461566A (en) 1977-10-26 1977-10-26 Underwater locating device for diver

Publications (1)

Publication Number Publication Date
JPS5461566A true JPS5461566A (en) 1979-05-17

Family

ID=14962432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12753677A Pending JPS5461566A (en) 1977-10-26 1977-10-26 Underwater locating device for diver

Country Status (1)

Country Link
JP (1) JPS5461566A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62119481A (en) * 1985-11-20 1987-05-30 Nippon Kokan Kk <Nkk> Fog signal recognition instrument
JPS62119482A (en) * 1985-11-20 1987-05-30 Nippon Kokan Kk <Nkk> Fog signal recognition instrument
JPH07294325A (en) * 1994-04-22 1995-11-10 Nec Corp Distant tsunami forecast assistance device
RU2556302C1 (en) * 2014-03-11 2015-07-10 Федеральное государственное бюджетное учреждение науки Тихоокеанский океанологический институт им. В.И. Ильичева Дальневосточного отделения Российской академии наук (ТОИ ДВО РАН) Method for passive acoustic location of underwater divers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62119481A (en) * 1985-11-20 1987-05-30 Nippon Kokan Kk <Nkk> Fog signal recognition instrument
JPS62119482A (en) * 1985-11-20 1987-05-30 Nippon Kokan Kk <Nkk> Fog signal recognition instrument
JPH07294325A (en) * 1994-04-22 1995-11-10 Nec Corp Distant tsunami forecast assistance device
RU2556302C1 (en) * 2014-03-11 2015-07-10 Федеральное государственное бюджетное учреждение науки Тихоокеанский океанологический институт им. В.И. Ильичева Дальневосточного отделения Российской академии наук (ТОИ ДВО РАН) Method for passive acoustic location of underwater divers

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