EP0024267A1 - Underwater acoustic beacon - Google Patents
Underwater acoustic beacon Download PDFInfo
- Publication number
- EP0024267A1 EP0024267A1 EP80850109A EP80850109A EP0024267A1 EP 0024267 A1 EP0024267 A1 EP 0024267A1 EP 80850109 A EP80850109 A EP 80850109A EP 80850109 A EP80850109 A EP 80850109A EP 0024267 A1 EP0024267 A1 EP 0024267A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- marker
- pipe
- pressure
- transmitter
- pressure switch
- 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.)
- Ceased
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
- B63C7/26—Means for indicating the location of underwater objects, e.g. sunken vessels
-
- 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
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
Definitions
- the invention relates to an acoustic marker of the kind which is indicated in the introduction to Patent Claim 1.
- a marker shall be used first of all to indicate the position of a boat or other object which is present below water, for example after a wreck.
- the localising of wrecks today is a difficult, time-consuming and often expensive task. Often localising occurs by chance in that fishing operations take up parts which makes it possible to determine the position. Active localising can occur by means of acoustic fish-detection equipment, such as fatho- meters or sonars, or by way of side-searching sonars. If the position of the object, for example the wreck, is roughly known, under water television cameras can also be used.
- the main objects of the invention are therefore to create an acoustic marker which in a submerged condition automatically transmits a localising signal which can be picked up by means of appropriate detection equipment. More particularly the problem is to create a marker with a practical design which permits reasonable manufacture and which can be stored in a-position of readiness on vessels or objects which are exposed to sinking in water, without the risk of functional disturbances.
- this task can be accomplished by designing the marker in accordance with the characterizing portion of Patent Claim 1.
- This design provides firstly a simple construction with reasonable components. It gives a favourable radiation effect and is easy to make durable against the influences which are prevailing during storage in readiness and use.
- a pipe 11 of a corrosion-resistant or surface-treated material there is used in the example as a housing for the marker a pipe 11 of a corrosion-resistant or surface-treated material.
- a battery 12 in the form of one or more monocells of known design.
- One terminal of the battery forms an abutment against a contact screw 13 which is fixed on a contact piece 14 within the pipe.
- the other terminal forms an abutment against a compression spring 15 which is pressed against the battery in order to hold it and provide contact with an end plug 16 which forms a seal against internal walls of the pipe 11 by means of a gasket 17, the plug being fastened with two locking screws 18 which pass through the pipe 11.
- the contact piece 14 there are arranged one or more sheets 19 with printed circuits, which support electronic parts of the transmitter.
- This sheet can be designed in a fundamentally known manner and will therefore not be described further here.
- the sheet 19 is supported at the other end of an intermediate piece 20 which is held in place by a second end plug 21.
- the end plug 21 is made tight against the pipe 11 bv means of a gasket 22 and held by two locking screws 23.
- a pressure switch 24 with an activating means 25 which projects outwardly of the end of the plug, the pressure switch being fastened with locking nuts 26.
- the activating means 25 is isolated from the surroundinas by means of a membrane 27 of appropriate material, for example rubber, which is held on the end plug 21 by means of a clamping ring 28 which is fixed by a series of screws 29.
- a pressure plate 33 preferably of metal or hard plastic.
- the transmitter on the sheet or sheets 19 is connected, that is to say is supplied with electric current, so that there are emitted signal pulses of predetermined form and frequency via an outlet lead 30.
- the lead 30 is connected to a transmitter or transducer 31 which is wound around the pipe 11 in the region of the intermediate piece 20, via a sleeve-shaped base 32 which lies externally on the pipe wall. External portions of the transmitter terminal 31 and the lead 30 are moulded into an external cylindrical block 34 of suitable moulding material.
- the pressure switch 24 is arranged so that it is activated, that is to say connected, when the pressure which acts on the membrane 27 exceeds a certain threshold value which corresponds to a specified particular depth.
- Such a marker can first and foremost be used to mark sunken vessels. However, it can also be utilised for other purposes, for example for marking fishing operations and the like.
- a natural application will be in connection with a pressure- registering sensor, so that in addition to giving position the transmitter will also indicate depth. As a result the possibility.is open for fishing boats to utilise the transmitter also to provide information concerning the depth of the fishing operation. This is relevant for example in purse seineing and trawling.
- the marker according to the invention will be very quick to operate, the pressure switch starting the transmission instantaneously when the predetermined depth is reached.
- the transmitter will thus be an acoustic transmitter. It can for example send out pulses having a length of the order of magnitude of 30 ms approximately every 4 seconds. Commercial sonar equipment willthen be able to be used for sounding and detection.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Acoustic marker for use at sea arranged in a pipe-shaped housing (11). In the one end there is space for a battery (12) which drives a transmitter (31) disposed coaxially around the housing at the other end, where there is arranged a pressure switch (24) covered by a membrane (27). The transmitter is switched on by the pressure switch when the pressure on the outside of the membrane exceeds a certain limit on the marker falling in water.
Description
- The invention relates to an acoustic marker of the kind which is indicated in the introduction to Patent Claim 1. Such a marker shall be used first of all to indicate the position of a boat or other object which is present below water, for example after a wreck.
- The localising of wrecks today is a difficult, time-consuming and often expensive task. Often localising occurs by chance in that fishing operations take up parts which makes it possible to determine the position. Active localising can occur by means of acoustic fish-detection equipment, such as fatho- meters or sonars, or by way of side-searching sonars. If the position of the object, for example the wreck, is roughly known, under water television cameras can also be used.
- The known methods and equipment are however time-consuming and expensive and as a rule demand that the position is roughly known beforehand.
- The main objects of the invention are therefore to create an acoustic marker which in a submerged condition automatically transmits a localising signal which can be picked up by means of appropriate detection equipment. More particularly the problem is to create a marker with a practical design which permits reasonable manufacture and which can be stored in a-position of readiness on vessels or objects which are exposed to sinking in water, without the risk of functional disturbances.
- According to the invention this task can be accomplished by designing the marker in accordance with the characterizing portion of Patent Claim 1. This design provides firstly a simple construction with reasonable components. It gives a favourable radiation effect and is easy to make durable against the influences which are prevailing during storage in readiness and use.
- Further advantageous features of the invention are stated in the dependent claims.
- The invention will be described further below with reference to the drawing, which shows an axial section through an example of an embodiment.
- There is used in the example as a housing for the marker a pipe 11 of a corrosion-resistant or surface-treated material. At the one end of this pipe there is arranged a
battery 12 in the form of one or more monocells of known design. One terminal of the battery forms an abutment against acontact screw 13 which is fixed on acontact piece 14 within the pipe. The other terminal forms an abutment against a compression spring 15 which is pressed against the battery in order to hold it and provide contact with anend plug 16 which forms a seal against internal walls of the pipe 11 by means of agasket 17, the plug being fastened with twolocking screws 18 which pass through the pipe 11. - Up to the
contact piece 14 there are arranged one ormore sheets 19 with printed circuits, which support electronic parts of the transmitter. This sheet can be designed in a fundamentally known manner and will therefore not be described further here. Thesheet 19 is supported at the other end of anintermediate piece 20 which is held in place by asecond end plug 21. In a manner corresponding to theend plug 16 theend plug 21 is made tight against the pipe 11 bv means of a gasket 22 and held by twolocking screws 23. - In addition there is arranged in the
end plug 21, for example screwed in, apressure switch 24 with an activatingmeans 25 which projects outwardly of the end of the plug, the pressure switch being fastened withlocking nuts 26. The activatingmeans 25 is isolated from the surroundinas by means of amembrane 27 of appropriate material, for example rubber, which is held on theend plug 21 by means of aclamping ring 28 which is fixed by a series of screws 29.In order to reduce the risk of wear on themembrane 27 under the influence of theactivating means 25, there is arranged between the membrane and the means a pressure plate 33, preferably of metal or hard plastic. - By means of the
pressure switch 26 the transmitter on the sheet orsheets 19 is connected, that is to say is supplied with electric current, so that there are emitted signal pulses of predetermined form and frequency via anoutlet lead 30. - The
lead 30 is connected to a transmitter ortransducer 31 which is wound around the pipe 11 in the region of theintermediate piece 20, via a sleeve-shaped base 32 which lies externally on the pipe wall. External portions of thetransmitter terminal 31 and thelead 30 are moulded into an externalcylindrical block 34 of suitable moulding material. - The
pressure switch 24 is arranged so that it is activated, that is to say connected, when the pressure which acts on themembrane 27 exceeds a certain threshold value which corresponds to a specified particular depth. - Such a marker can first and foremost be used to mark sunken vessels. However, it can also be utilised for other purposes, for example for marking fishing operations and the like. A natural application will be in connection with a pressure- registering sensor, so that in addition to giving position the transmitter will also indicate depth. As a result the possibility.is open for fishing boats to utilise the transmitter also to provide information concerning the depth of the fishing operation. This is relevant for exemple in purse seining and trawling.
- The marker according to the invention will be very quick to operate, the pressure switch starting the transmission instantaneously when the predetermined depth is reached.
- The transmitter will thus be an acoustic transmitter. It can for example send out pulses having a length of the order of magnitude of 30 ms approximately every 4 seconds. Commercial sonar equipment willthen be able to be used for sounding and detection.
Claims (5)
1. Acoustic marker for objects at oceanic locations,especially for marking sunken vessels, having a battery-driven sound transmitter which is activated by means of a switch which switches on the transmitter when the marker is lowered down in the sea, characterized in that it has a pipe-shaped housing (11) where at the one end there is space for a battery (12) and where in the other end there is arranged a pressure- switch (24) which is switched on in response to a certain pressure from the medium which surrounds the marker.
2. Acoustic marker in accordance with claim 1, characterized in that the one end of the pipe-shaped housing (11) which receives the pressure switch (24) is covered tightly by a membrane (27) which allows the transfer of pressure from the surrounding medium to the pressure switch (24).
3. Acoustic marker in accordance with claim 1 or 2, characterized in that the pressure switch (24) is arranged in an end plug (21) which is sealingly inserted in the end of the pipe-shaped housing (11).
4. Acoustic marker in accordance with claim 2 or 3, characterized in that the membrane (27) is arranged over the outwardly facing surface of the end plug (21).
5. Acoustic marker in accordance with any of claims 1-4, characterized in that the pipe-shaped housing (11) supports the transmitter (31) coaxially at the.end where the pressure switch (24) is located.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO792250A NO792250L (en) | 1979-07-06 | 1979-07-06 | ACOUSTIC MARKETS. |
NO792250 | 1979-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0024267A1 true EP0024267A1 (en) | 1981-02-25 |
Family
ID=19884953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80850109A Ceased EP0024267A1 (en) | 1979-07-06 | 1980-07-04 | Underwater acoustic beacon |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0024267A1 (en) |
CA (1) | CA1151281A (en) |
DK (1) | DK288580A (en) |
FI (1) | FI802114A (en) |
GR (1) | GR69635B (en) |
NO (1) | NO792250L (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992021557A1 (en) * | 1991-05-28 | 1992-12-10 | Landcare Research New Zealand Limited | Oceanic location and recovery device and method |
GB2277182A (en) * | 1993-04-16 | 1994-10-19 | Elliot Joseph Gray | Sea-going vessel warning system |
DE102007052177A1 (en) | 2007-10-30 | 2009-05-07 | Novega Produktionssysteme Gmbh | Ortungsbake |
GB2506186A (en) * | 2012-09-25 | 2014-03-26 | Eleanor Deal | Safe Wall Identification for Visually Impaired Swimmers |
CN105160820A (en) * | 2015-08-28 | 2015-12-16 | 大连测控技术研究所 | Hydroacoustic beacon with identity recognition function |
CN108549053A (en) * | 2018-03-15 | 2018-09-18 | 中国人民解放军91388部队 | A kind of multi signal system hydrolocation beacon system Big Dipper synchronization and be remotely controlled |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3686656A (en) * | 1970-06-24 | 1972-08-22 | Charles D Richards | Sunken vessel locator |
-
1979
- 1979-07-06 NO NO792250A patent/NO792250L/en unknown
-
1980
- 1980-07-02 FI FI802114A patent/FI802114A/en not_active Application Discontinuation
- 1980-07-04 EP EP80850109A patent/EP0024267A1/en not_active Ceased
- 1980-07-04 DK DK288580A patent/DK288580A/en not_active Application Discontinuation
- 1980-07-04 GR GR62375A patent/GR69635B/el unknown
- 1980-07-04 CA CA000355498A patent/CA1151281A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3686656A (en) * | 1970-06-24 | 1972-08-22 | Charles D Richards | Sunken vessel locator |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992021557A1 (en) * | 1991-05-28 | 1992-12-10 | Landcare Research New Zealand Limited | Oceanic location and recovery device and method |
GB2277182A (en) * | 1993-04-16 | 1994-10-19 | Elliot Joseph Gray | Sea-going vessel warning system |
GB2277182B (en) * | 1993-04-16 | 1997-04-23 | Elliot Joseph Gray | Sea-going vessel warning system |
DE102007052177A1 (en) | 2007-10-30 | 2009-05-07 | Novega Produktionssysteme Gmbh | Ortungsbake |
GB2506186A (en) * | 2012-09-25 | 2014-03-26 | Eleanor Deal | Safe Wall Identification for Visually Impaired Swimmers |
CN105160820A (en) * | 2015-08-28 | 2015-12-16 | 大连测控技术研究所 | Hydroacoustic beacon with identity recognition function |
CN108549053A (en) * | 2018-03-15 | 2018-09-18 | 中国人民解放军91388部队 | A kind of multi signal system hydrolocation beacon system Big Dipper synchronization and be remotely controlled |
Also Published As
Publication number | Publication date |
---|---|
FI802114A (en) | 1981-01-07 |
DK288580A (en) | 1981-01-07 |
NO792250L (en) | 1981-01-07 |
CA1151281A (en) | 1983-08-02 |
GR69635B (en) | 1982-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE DE FR GB IT LU NL SE |
|
17P | Request for examination filed |
Effective date: 19810820 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19850503 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HOLAND, BAARD |