EP0179060A1 - Alarme d'ancrage, en particulier pour bateaux de plaisance - Google Patents

Alarme d'ancrage, en particulier pour bateaux de plaisance

Info

Publication number
EP0179060A1
EP0179060A1 EP19840902239 EP84902239A EP0179060A1 EP 0179060 A1 EP0179060 A1 EP 0179060A1 EP 19840902239 EP19840902239 EP 19840902239 EP 84902239 A EP84902239 A EP 84902239A EP 0179060 A1 EP0179060 A1 EP 0179060A1
Authority
EP
European Patent Office
Prior art keywords
anchoring
alarm
signal
angle
wind
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.)
Withdrawn
Application number
EP19840902239
Other languages
German (de)
English (en)
Inventor
Mickey Behrendtz
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.)
NORDIC INTERTRADE AB
Original Assignee
NORDIC INTERTRADE AB
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 NORDIC INTERTRADE AB filed Critical NORDIC INTERTRADE AB
Publication of EP0179060A1 publication Critical patent/EP0179060A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane

Definitions

  • the present invention relates to an anchoring alarm, especially for leisure boats.
  • an anchor is usually designed so that the force with which the anchor can be loaded with ⁇ ut losing its hold is greatest in one specific direction and therefore when anchoring the aim is to make this direction coincide with the wind direction. Assuming that the anchor has sufficient holding strength and the wind conditions remain constant, it is not disadvantageous to let the boat ride at anchor.
  • the object of the present invention is to provide an anchoring alarm, especially for leisure boats, by means of which, when wind conditions change to the extent that there is a danger that the boat will break loose from its mooring and start to drift, an alarm signal is produced to warn in good time that re-anchoring may be necessary.
  • the anchoring alarm comprises a first device for monitoring the wind speed and for producing a first signal when the wind speed exceeds a predetermined value, a second device for monitoring the value of the angle between the lengthways direction of the boat and a reference direction, this angle being set equal to nil at the time of anchoring, and for producing a second signal when the angle value exceeds a predetermined value as a result of a change in wind direction, and an alarm arrangement connected signalwise with the said devices and designed to produce a noise and/or light signal when the said first and second signals occur simultaneously.
  • Figures 1a and 1b show schematically an embodiment of the invention with the wind conditions generally unchanged from those prevailing at the time of anchoring ( Figure 1a) and with the wind conditions changed so much that the boat should be anchored afresh.
  • Figure 2 An alternative embodiment of the invention is shown schematically in Figure 2.
  • An anchoring alarm comprises a first device 1 for producing a first signal when the wind speed and thus also the wind pressure exceed a predetermined value, a second device 2 designed to produce a second signal when the wind shifts through an angle which exceeds a certain angular value, and an alarm arrangement 5 connected signalwise with the said devices 1, 2 via lines 3, 4, with the task of producing a noise and/or light signal when the said first and second signals occur simultaneously.
  • the first device 1 may consist of a conventional wind pressure gauge 6 with a chamber 7 open to the front and a piston 8 which is movable therein, and an optical monitoring device 9 with a light source, such as a photodiode, and a photocell 9b.
  • the piston 8 At low wind pressure values the piston 8 is located well back in the chamber 7 and a plate 10 effectively connected to the piston interrupts the path of the beam between the light source 9a and the photocell 9b, the output signal then being equal to nil. With increasing wind pressure the piston 8 is forced outwards towards the opening of the chamber and at a certain wind pressure level the path of the beam is no longer interrupted by the plate 10, so that as a result an output signal equal to the above-mentioned first signal is obtained by the photocell 9b. This is transmitted via the line 3 to the alarm arrangement 5.
  • the second device 2 comprises a rotatably mounted sector-shaped plate 11 which is effectively connected to a compass needle 12 indicated on the drawing by an arrow, and an. optical monitoring device 13 of the same kind as the monitoring device 9, i.e. comprising a light source and a photocell the latter being' connected via the line 4 to the alarm arrangement 5.
  • the sector-shaped plate has a sector angle 14 within which it interrupts the path of the beam between the light source and the photocell. Within the remainder of the sectorshaped plate 11 the said beam path is not interrupted but, as before, an output signal equal to the second signal is produced here.
  • the sector angle 14 is equal to double the wind shift angle which the anchor can tolerate without losing hold.
  • the monitoring device 13 is rotated into a position wherein it divides the sector angle 14 in half.
  • the compass needle 12 holds the sectorshaped plate 11 in a position which varies only dependent upon the movements of the boat swinging round in the direction of the wind (see Figure 1a). If the wind direction now changes by more than half the sector angle 14 (see Figure lb) then, as a result of the boat striving to lie with the wind direction, the sector-shaped plate 11 no longer interrupts the path of the beam and the second signal is obtained as described above.
  • the alarm arrangement 5 is designed to produce a noise and/or light signal when the signals arrive simultaneously via the lines 3 and 4.
  • the noise signal can be transmitted over a loud-speaker 15 positioned at a suitable point on the boat, as shown on the drawing.
  • the invention may be constructed in many ways within the framework of the concept of the invention.
  • the first device 1 may consist of a conventional wind gauge 6 combined with a signal level monitoring circuit, a so-called level balancer circuit, expediently positioned in the alarm arrangement 5.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

Lors du mouillage de bateaux de plaisance au moyen d'une ancre et d'une ligne fixée à la proue du bateau, il est préférable de recevoir une alarme déclenchée en fonction du mouvement du bateau dû à la direction du vent lorsque les conditions de vent changent à un point tel qu'il est nécessaire de lever l'ancre. L'alarme d'ancrage permettant de réaliser cet objectif comporte un premier dispositif (1) pour surveiller la vitesse du vent et produire un premier signal lorsque la vitesse du vent dépasse une valeur prédéterminée, ainsi qu'un second dispositif (2) pour surveiller la valeur de l'angle entre la direction longitudinale du bateau et une direction de référence, cet angle étant égal à zéro au moment du mouillage, et pour produire un second signal lorsque la valeur de l'angle dépasse une valeur prédéterminée résultant d'un changement de direction du vent. L'alarme d'ancrage comporte également un dispositif d'alarme (5) relié par signaux auxdits dispositifs et conçu pour produire un bruit et/ou un signal lumineux lorsque lesdits premier et second signaux se produisent simultanément.
EP19840902239 1983-05-26 1984-05-28 Alarme d'ancrage, en particulier pour bateaux de plaisance Withdrawn EP0179060A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8302968 1983-05-26
SE8302968A SE432315B (sv) 1983-05-26 1983-05-26 Ankringsvarnare, foretredesvis for fritidsbatar

Publications (1)

Publication Number Publication Date
EP0179060A1 true EP0179060A1 (fr) 1986-04-30

Family

ID=20351337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840902239 Withdrawn EP0179060A1 (fr) 1983-05-26 1984-05-28 Alarme d'ancrage, en particulier pour bateaux de plaisance

Country Status (4)

Country Link
EP (1) EP0179060A1 (fr)
AU (1) AU3017184A (fr)
SE (1) SE432315B (fr)
WO (1) WO1984004836A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628557A1 (fr) * 1988-03-10 1989-09-15 Fillios Jean Pierre Dispositif d'alarme de dragage d'ancre pour bateaux
FR2741439B1 (fr) * 1995-11-17 1998-01-16 Jules Richard Instr Sa Dispositif de surveillance d'un ensemble de grandeurs physiques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041284A5 (fr) * 1969-04-18 1971-01-29 Realisa Electroni Et
SE343156B (fr) * 1970-06-16 1972-02-28 K Grauers
SE426426B (sv) * 1981-05-21 1983-01-17 Ulf Anders Thoren Anordning for metning av vindriktning och vindhastighet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8404836A1 *

Also Published As

Publication number Publication date
WO1984004836A1 (fr) 1984-12-06
AU3017184A (en) 1984-12-18
SE432315B (sv) 1984-03-26
SE8302968D0 (sv) 1983-05-26

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Inventor name: BEHRENDTZ, MICKEY