+

WO1990008060A1 - Systeme de sauvetage d'urgence - Google Patents

Systeme de sauvetage d'urgence Download PDF

Info

Publication number
WO1990008060A1
WO1990008060A1 PCT/GB1990/000077 GB9000077W WO9008060A1 WO 1990008060 A1 WO1990008060 A1 WO 1990008060A1 GB 9000077 W GB9000077 W GB 9000077W WO 9008060 A1 WO9008060 A1 WO 9008060A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
receiver
antenna
rescue system
alarm
Prior art date
Application number
PCT/GB1990/000077
Other languages
English (en)
Inventor
Allan Beacham
Original Assignee
Searchrite Limited
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 Searchrite Limited filed Critical Searchrite Limited
Publication of WO1990008060A1 publication Critical patent/WO1990008060A1/fr

Links

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
    • B63C9/00—Life-saving in water
    • B63C9/0005—Life-saving in water by means of alarm devices for persons falling into the water, e.g. by signalling, by controlling the propulsion or manoeuvring means of the boat
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/68—Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
    • 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
    • G01S3/02—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 radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
    • 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
    • G01S3/02—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 radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/40—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal adjusting orientation of a single directivity characteristic to produce maximum or minimum signal, e.g. rotatable loop antenna or equivalent goniometer system

Definitions

  • This invention relates to rescue systems for locating the position of persons in an emergency and has application, for example, at sea for locating and recovering a man overboard, or on land for locating and rescuing missing persons, eg by the mountain rescue services.
  • the object of the invention is to provide a rescue system which enables the direction of the missing person from the rescuer to be assessed.
  • such a rescue system comprises a personal transmitter adapted to be attached, or .worn, by a person and which can be actuated in an emergency to emit a predetermined signal, an antenna for receiving said signal, and a receiver adapted to receive the signal from the antenna and to activate an alarm in response to said signal, said receiver including a detector circuit which responds to any variations in signal strength from the antenna for producing an audible or visual indication of said strength, the arrangement being such that when the receiver alarm is activated by said signal, the rescuer can assess the direction of the signal transmission by variations of intensity of signal strength derived from the detector circuit of the receiver.
  • the system can be used widely, eg by pleasure sailors, racing yachtsmen, powerboat sailors, children of almost any age, fishermen, lifeboatmen; in short anyone who spends time on vessels afloat.
  • the system can also be used for persons working near or over sea or fresh water, eg oil platform or dock workers.
  • the personal transmitter can be provided with a battery which is activated directly, or via a switch, by contact with salt water, so that no action is required from the man-overboard.
  • a switch may be provided can be operated by contact with fresh water.
  • the personal transmitter may be worn either on a life-jacket, or on the person via a wrist or neck strap, or harness, or some other item of clothing. Any location
  • ⁇ " should be chosen to be the most easy to wear for the individual, thus encouraging wearing at all times.
  • a signal which can be an unmodulated carrier, or a coded and modulated tone or tone sequence.
  • 25 antenna array can be used to receive the signal, and any signal received would be amplified by the receiver to activate an audible alarm. The helmsman would then initiate man-overboard procedures in response to the alarm. Thereafter, the system would be used for location of the man overboard.
  • two fixed antennae in an array are provided, which are spaced apart to port and starboard, the antennae being phased to pick up the transmitted signal and provide left/right 5 signal information for said receiver, which latter would include a display of the appropriate signal strength for the helmsman.
  • an antenna which would be preferably omni-directional, could be provided to pick up the signal initially, and a portable, directional antenna
  • the receiver may incorporate a memory circuit which is operative to ignore said sharp variations .
  • the directional antenna may be in the form of a plate, eg of plastics, with sensing elements embedded
  • a directional array eg a YAGI or logperic ⁇ ic antenna
  • a display of signal strength eg a bargraph comprising a line of light emitting diodes (l.e.d's).
  • an audible signal perhaps of a rising tone with increasing signal
  • the plate can be mounted on a handle resembling a pistol grip to facilitate sweeping movement of the plate in a horizontal attitude in use. Also, when not in use, the plate can be stowed in a holster which is mounted in a convenient position.
  • each personal transmitter would have a battery power pack and a panic button to enable the wearer to activate his transmitter manually.
  • the personal transmitters can all be on the same frequency, in which case, for marine applications, a man-overboard can be alarmed, and located, from any boat in the vicinity.
  • the transmitter's signal can also be coded, so that each boat has a separate code identity.
  • the signal can be coded so that the casualty type is indicated, eg one type for windsurfers or dinghy sailors (who would need a panic button to operate their transmitter as they get wet normally) , another type for cruising yachtsmen, another type for racing yachtsmen, etc.
  • FIG. 1 is a block diagram of the personal transmitter
  • FIG. 2 is a block diagram of the receiver
  • FIG. 3 is a block diagram of a handheld, directional antennae receiver arrangement, -S ⁇
  • Figure 4 is a diagrammatic view of the directional antenna and a holster therefor.
  • FIG. 5 is a block diagram of a masthead antennae/receiver arrangement.
  • the personal transmitter 1 is preferably a crystal oscillator device 1A, the generated signal from which is modulated by a modulator IB and multiplied in stages 1C and IE, via a buffer ID, up to the frequency required. Thereafter, the signal is fed by a power stage IF via a low pass filter 1G to an antenna 1H.
  • An alternative system is to use a synthesiser "multiplier" where a low frequency crystal around 12MHz is used within a "phase locked-loop” to stabilise the output from an oscillator running at the final frequency. ' This would be followed by a power stage as described above.
  • the transmitter power output would be of the order of 50 - 400 milliwatt, although a lower power may be necessary to limit range en calm days.
  • the difficulty is to ensure that a signal from the transmitter antenna, awash in a heavy sea, can be received while avoiding alarms being activated at considerable distances in calm weather.
  • the line-of-sight range at present is estimated at about 1 kilometre, using about 50 mW transmitter output, and a receiver sensitivity of about 5 microvolt.
  • the receiver unit 2 includes a receiver antenna 2A, the signal from which is fed in series through a bandpass filter 2B, an RF ampl ⁇ ifier 2C, and a further bandpass filter 2D, and then mixed in a balanced mixer 2E with a local oscillator signal fed from crystal 2G via an analogue or synthesiser multipler 2F.
  • the mixed signal is then fed via a crystal filter 2H, to provide a first IF signal, which is then fed to a single chip receiver 21 (to which a second local oscillator 2L is connected) to produce a received signal strength indicator output which can be fed via ceramic filters 2J and 2K to be rectified in a rectifier 2M, amplifed in an amplifier 2N and sent to a display 20 and possibly to a tone generator to produce an audible signal. If the signal is modulated, the modulation can be recovered, buffered in an audio buffer 2P and sent to a speaker and/or phones 2Q.
  • An alternative type of receiver can be used which is basically a filtered RF amplifier.
  • the handheld directional antenna/receiver arrangement includes, in addition to the transmitter 1 and receiver 2, a portable, directional antenna 3, which is preferably formed as a flat plate 4 of approximately A4 page size, tapering slightly in a forward direction, and with a pistol grip 5 under.
  • a portable, directional antenna which is preferably formed as a flat plate 4 of approximately A4 page size, tapering slightly in a forward direction, and with a pistol grip 5 under.
  • Such an antenna is a logperiodic or a YAGI array and is preferably moulded in plastics with bargraph elements 6 incorporated, thus avoiding contamination from the environment, and to make the unit safer for use in front of the face.
  • An A4 page size antenna will be of about 10 dB gain, and will have about a 30 degree wide front lobe in the polar diagram at 800-1000 MHZ.
  • the stowed in a holster 7 on the vessel when not in use which includes a connection for battery charging current or a ship supply.
  • the holster would also either provide an RF connection to either the existing vessel VHF antenna downlead, or a fitted omni-directional antenna as described hereinbefore via a circulator/directional coupler, to provide omni-directional coverage for the alarm mode, or support the directional antenna so as to provide an essentially omni-directional antenna in a horizontal plane.
  • the receiver antenna 2A at masthead height, good coverage can be expected.
  • the directional antenna 3 is installed in the holster 7, a loud audio sounder is enabled, to alert the crew to a man-overboard.
  • the directional antenna 3 can also be designed with a detector circuit to produce a high pitched audio tone, when pointed directly at the man-overboard, and a large reading on the bargraph; and when pointed away, or at an angle to him, a lower tone, and smaller reading on the bargraph.
  • the receiver unit 2 can be encapsulated within or adjacent to the pistol grip 5, and can drive the audio and visual displays, powered either from a battery within, or by a coiled, extensible cable from the vessel, in which case, preferably, the complete antenna/receiver unit can be made waterproof and able to float.
  • the pistol grip 5 can have a wrist loop, or lanyard 8, to ease handling in the worst environment -2 -
  • the receiver unit 2 is mounted within the vessel, and connected to the masthead array antenna downlead, the displays, and on-board power.
  • the masthead has two spaced, port and starboard (left and right), antennae 9, 10 which are connected via a suitable coupler unit 11 to pick up a signal with a phase variation (when not dead ahead) , and convert it into an amplitude variation, which is subsequently switched by a keyer 12 to send to a single input on the receiver.
  • the signal strength output from the receiver is therefore compared with the keyer, which is alternately switching from left to right antennae, and the net signal used fed via a left/right driver 13 to a display 14 to show the man-overboard approximate position
  • the average signal is a function of the distance of the man-overboard, and can also be displayed.
  • the water-activated battery powers the transmitter 1 to produce a man-overboard signal.
  • the receiver antenna 2A, 9 or 10 detects the signal (preferably after a short delay to avoid nuisance alarms) , and together with any other vessel so equipped in the same locality, an audible alarm in the receiver 2 is set off on - c - the vessel. This could be latched on, or not, as the signal strength will vary in a large sea.
  • a test function is available to all users in that a ⁇ o- switch on each transmitter will operate the transmitter for a short time.
  • the receiver will not normally respond to a short transmission, as to avoid nuisance alarms it requires a longer (a few seconds) signal.
  • the receiver also has a switch which will inhibit the above time gating. Thus when a transmitter switch is actuated and the receiver is in test mode, either the alarm will sound (receiver in holster) or the display/audio output will be produced (receiver out of holster) .
  • This test function allows testing of almost all the aspects of the system and encourages improved confidence in the users of the system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Emergency Alarm Devices (AREA)
  • Transmitters (AREA)
  • Alarm Systems (AREA)

Abstract

Le système est caractérisé par un émetteur personnel (1) conçu pour être actionné en cas d'urgence afin d'émettre un signal, une antenne (2A, 3) recevant ledit signal, ainsi qu'un récepteur (2) recevant le signal provenant de l'antenne afin d'activer une alarme, ledit récepteur comprenant un circuit détecteur (2B à 2K) répondant aux variations d'intensité de signal provenant de l'antenne, afin de produire une indication audible (2Q) ou visuelle (20) de ladite intensité. Ainsi, lorsque l'alarme du récepteur est activée par ledit signal, le sauveteur peut établir la direction de la transmission du signal à l'aide desdites variations se produisant dans l'intensité du signal. Dans un mode de réalisation, on a prévu deux antennes (9, 10) à fixer au mât de sorte qu'elles soient espacées à bâbord et à tribord, tout signal reçu d'un émetteur personnel (1) étant amplifié par le récepteur (2) afin d'activer une alarme de bateau et ainsi de permettre à l'homme de barre de commencer les man÷uvres d'homme à la mer. Ensuite, afin de localiser la direction du signal, on met les deux antennes fixes (9, 10) en phase afin d'obtenir les informations des signaux de gauche/droite destinés au récepteur (2), ce dernier comportant un affichage de l'intensité appropriée du signal. Dans un autre agencement, on a prévu une antenne (2A) fixe omnidirectionnelle que l'on fixe au mât, afin qu'elle capte un signal provenant d'un émetteur personnel (1) et déclenche une alarme de bateau. Afin de localiser la direction du signal, on a prévu une seconde antenne (3) directionnelle portative, reliée audit récepteur (2), que l'on tient à la main et que l'on fait passer autour du bateau lors de son utilisation, afin d'obtenir une valeur (6) de l'intensité la plus forte du signal. Un équipement de test est incorporé dans le système, dans lequel à n'importe quel moment on peut mettre en marche un émetteur et un récepteur sans déclencher d'alarmes pour d'autres utilisateurs.
PCT/GB1990/000077 1989-01-21 1990-01-18 Systeme de sauvetage d'urgence WO1990008060A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8901344.5 1989-01-21
GB898901344A GB8901344D0 (en) 1989-01-21 1989-01-21 Emergency rescue system

Publications (1)

Publication Number Publication Date
WO1990008060A1 true WO1990008060A1 (fr) 1990-07-26

Family

ID=10650397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/000077 WO1990008060A1 (fr) 1989-01-21 1990-01-18 Systeme de sauvetage d'urgence

Country Status (5)

Country Link
EP (1) EP0423254A1 (fr)
AU (1) AU4953190A (fr)
CA (1) CA2025892A1 (fr)
GB (1) GB8901344D0 (fr)
WO (1) WO1990008060A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261788A (en) * 1991-09-26 1993-05-26 Ist Lab Ltd A location system
ES2070662A2 (es) * 1992-02-06 1995-06-01 Sanchez Luis Ignacio Zumarraga Sistema de seguridad personal para la navegacion.
WO2001044830A1 (fr) * 1999-12-16 2001-06-21 Ecole Polytechnique Federale De Lausanne Dispositif de reperage d'un homme ou d'un objet dans un milieu liquide
ES2162572A1 (es) * 1999-07-26 2001-12-16 Garrido Jesus Maria Idoate Sistema de seguridad para parada de emergencia en maquinas.
KR20030002393A (ko) * 2001-06-29 2003-01-09 (주)에르센테크놀러지 지향성 생활 무전시스템
ES2192147A1 (es) * 2002-03-14 2003-09-16 Carlos Horacio Placenti Dispositivo avisador para salvamento de personas en medios acuaticos y procedimiento correspondiente.
WO2003076265A1 (fr) * 2002-03-14 2003-09-18 Carlos Horacio Placenti Dispositif d'alerte permettant le sauvetage de personnes dans des milieux aquatiques et procede correspondant
US6878019B2 (en) * 2001-10-25 2005-04-12 Yamaha Marin Kabushiki Kaisha Watercraft control systems
FR2871894A1 (fr) * 2004-06-22 2005-12-23 Cryptiris Sarl Systeme de localisation par recherche directive au niveau d'une onde radio codee
WO2006053399A1 (fr) 2004-11-22 2006-05-26 Seasafe Pty Ltd Dispositif de localisation personnel de marine
GB2458877A (en) * 2008-02-29 2009-10-07 Philip Howson Distress Alarm System
DE102009014641A1 (de) * 2009-03-24 2010-10-07 Töteberg, Andreas System zur Verlustüberwachung und Positionsbestimmung
EP2278351A1 (fr) * 2009-07-24 2011-01-26 Tracker OY Appareil de recherche de direction assistée
WO2013026036A1 (fr) * 2011-08-17 2013-02-21 Clardy Thomas W Système d'auto-sauvetage de personne à la mer hautement fiable intégré
CN115372897A (zh) * 2022-09-02 2022-11-22 南京理工大学 基于微波的海上救援目标探测系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683384A (en) * 1969-07-22 1972-08-08 Vec Trak Research & Dev Corp Radio direction finder
GB1527604A (en) * 1976-08-03 1978-10-04 Cooper C Radio homers for use in mobile craft
FR2447318A1 (fr) * 1979-01-25 1980-08-22 Jaouen Jean Jacques Dispositif de secours pour la navigation
GB2047039A (en) * 1979-04-12 1980-11-19 Brooks Nautical Developments Radio direction finding equipment
WO1983003904A1 (fr) * 1982-04-29 1983-11-10 Licentia Patent-Verwaltungs-Gmbh Dispositif radiogoniometrique
US4633257A (en) * 1983-11-14 1986-12-30 Sanders Associates, Inc. Acquisition system employing circular array
DE3600802A1 (de) * 1986-01-14 1987-07-16 Heinrich Prof Dr Ing Reents Vorrichtung zur ueberwachung von personen oder gegenstaenden, die von bord eines schiffes, einer schwimmenden fabrik oder einer fest im meer verankerten betriebsstaette ins wasser fallen
EP0230173A1 (fr) * 1985-11-28 1987-07-29 Limouzin, Dominique Dispositif de surveillance à distance de la présence, dans une zone proche, d'un objet mobile, d'un animal ou d'un être humain
US4714914A (en) * 1983-12-05 1987-12-22 Automatic Safety Products Liquid immersion alarm

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683384A (en) * 1969-07-22 1972-08-08 Vec Trak Research & Dev Corp Radio direction finder
GB1527604A (en) * 1976-08-03 1978-10-04 Cooper C Radio homers for use in mobile craft
FR2447318A1 (fr) * 1979-01-25 1980-08-22 Jaouen Jean Jacques Dispositif de secours pour la navigation
GB2047039A (en) * 1979-04-12 1980-11-19 Brooks Nautical Developments Radio direction finding equipment
WO1983003904A1 (fr) * 1982-04-29 1983-11-10 Licentia Patent-Verwaltungs-Gmbh Dispositif radiogoniometrique
US4633257A (en) * 1983-11-14 1986-12-30 Sanders Associates, Inc. Acquisition system employing circular array
US4714914A (en) * 1983-12-05 1987-12-22 Automatic Safety Products Liquid immersion alarm
EP0230173A1 (fr) * 1985-11-28 1987-07-29 Limouzin, Dominique Dispositif de surveillance à distance de la présence, dans une zone proche, d'un objet mobile, d'un animal ou d'un être humain
DE3600802A1 (de) * 1986-01-14 1987-07-16 Heinrich Prof Dr Ing Reents Vorrichtung zur ueberwachung von personen oder gegenstaenden, die von bord eines schiffes, einer schwimmenden fabrik oder einer fest im meer verankerten betriebsstaette ins wasser fallen

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261788A (en) * 1991-09-26 1993-05-26 Ist Lab Ltd A location system
ES2070662A2 (es) * 1992-02-06 1995-06-01 Sanchez Luis Ignacio Zumarraga Sistema de seguridad personal para la navegacion.
ES2162572A1 (es) * 1999-07-26 2001-12-16 Garrido Jesus Maria Idoate Sistema de seguridad para parada de emergencia en maquinas.
WO2001044830A1 (fr) * 1999-12-16 2001-06-21 Ecole Polytechnique Federale De Lausanne Dispositif de reperage d'un homme ou d'un objet dans un milieu liquide
FR2802651A1 (fr) * 1999-12-16 2001-06-22 Ecole Polytech Dispositif de reperage d'un homme ou d'un objet dans un milieu liquide
KR20030002393A (ko) * 2001-06-29 2003-01-09 (주)에르센테크놀러지 지향성 생활 무전시스템
US6878019B2 (en) * 2001-10-25 2005-04-12 Yamaha Marin Kabushiki Kaisha Watercraft control systems
ES2213478A1 (es) * 2002-03-14 2004-08-16 Carlos Horacio Placenti Mejoras en el objeto de la patente principal n.200200604 por: "dispositivo avisador para salvamento de personas en medios acuaticos y procedimiento correspondiente.
WO2003076265A1 (fr) * 2002-03-14 2003-09-18 Carlos Horacio Placenti Dispositif d'alerte permettant le sauvetage de personnes dans des milieux aquatiques et procede correspondant
ES2192147A1 (es) * 2002-03-14 2003-09-16 Carlos Horacio Placenti Dispositivo avisador para salvamento de personas en medios acuaticos y procedimiento correspondiente.
FR2871894A1 (fr) * 2004-06-22 2005-12-23 Cryptiris Sarl Systeme de localisation par recherche directive au niveau d'une onde radio codee
WO2006053399A1 (fr) 2004-11-22 2006-05-26 Seasafe Pty Ltd Dispositif de localisation personnel de marine
GB2458877A (en) * 2008-02-29 2009-10-07 Philip Howson Distress Alarm System
GB2458877B (en) * 2008-02-29 2012-04-25 Philip Howson Distress alarm system
DE102009014641A1 (de) * 2009-03-24 2010-10-07 Töteberg, Andreas System zur Verlustüberwachung und Positionsbestimmung
EP2278351A1 (fr) * 2009-07-24 2011-01-26 Tracker OY Appareil de recherche de direction assistée
US8456296B2 (en) 2009-07-24 2013-06-04 Radio Systems Corporation Assisted direction finding apparatus
WO2013026036A1 (fr) * 2011-08-17 2013-02-21 Clardy Thomas W Système d'auto-sauvetage de personne à la mer hautement fiable intégré
CN115372897A (zh) * 2022-09-02 2022-11-22 南京理工大学 基于微波的海上救援目标探测系统

Also Published As

Publication number Publication date
AU4953190A (en) 1990-08-13
EP0423254A1 (fr) 1991-04-24
GB8901344D0 (en) 1989-03-15
CA2025892A1 (fr) 1990-07-22

Similar Documents

Publication Publication Date Title
WO1990008060A1 (fr) Systeme de sauvetage d'urgence
US9223027B1 (en) Rescue method and system for an overboard passenger
EP0816862B1 (fr) Emetteur de signaux de détresse
US7642919B2 (en) Signalling and localization device for an individual in the sea and method of use thereof
US7492251B1 (en) Dual mode personal locator beacon
US5886635A (en) Overboard alarm with localization system interface
CN106056976B (zh) 船舶定位导航及安全预警报警系统
US6545606B2 (en) Device and method for alerting to the need to recover something, identifying it, and determining its location for purposes of recovery
CN201302609Y (zh) 海上个人应急示位跟踪设备
US5029293A (en) Device for locating an individual fallen into the sea
US20090121931A1 (en) Wrist Worn Communication Device coupled with Antenna Extendable by the Arm
US7388512B1 (en) Diver locating method and apparatus
EP3272639A1 (fr) Système autonome de sauvetage de personnes pour des navires et des épaves
US20050012663A1 (en) System for locating a person having fallen overboard
US5006831A (en) Device providing for the safety of a man overboard
US20210312782A1 (en) Man location and man overboard detection system
WO2002077943A1 (fr) Systeme de gestion d'alarme destine a un groupe ferme d'utilisateurs et un dispositif de recherche et de detresse mondiale et de gestion de secours de sauvetage
US20070076527A1 (en) Multi-functional device and method for marine signaling and survival
US20020158795A1 (en) Electronic distress call and position finding system for rescueing distressed people
GB2108666A (en) Personnel or object detection at sea
WO2000023813A1 (fr) Perfectionnements apportes et ayant trait a des emetteurs
CN102419429A (zh) 机载搜索机
JPH04113984A (ja) 救難信号発信ブイ
JPH0633797U (ja) ライフジャケット
CN202217050U (zh) 机载搜索机

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CA JP MC NO US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1990902309

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2025892

Country of ref document: CA

WWP Wipo information: published in national office

Ref document number: 1990902309

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1990902309

Country of ref document: EP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载