SE459376B - Near-drowning accident indicator - Google Patents

Near-drowning accident indicator

Info

Publication number
SE459376B
SE459376B SE8704257A SE8704257A SE459376B SE 459376 B SE459376 B SE 459376B SE 8704257 A SE8704257 A SE 8704257A SE 8704257 A SE8704257 A SE 8704257A SE 459376 B SE459376 B SE 459376B
Authority
SE
Sweden
Prior art keywords
unit
transmitter
receiver
signals
signal
Prior art date
Application number
SE8704257A
Other languages
Swedish (sv)
Other versions
SE8704257D0 (en
SE8704257L (en
Inventor
Eje Hayden
Original Assignee
Eje Hayden
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 Eje Hayden filed Critical Eje Hayden
Priority to SE8704257A priority Critical patent/SE459376B/en
Publication of SE8704257D0 publication Critical patent/SE8704257D0/en
Publication of SE8704257L publication Critical patent/SE8704257L/en
Publication of SE459376B publication Critical patent/SE459376B/en

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/08Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/08Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
    • G08B21/088Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water by monitoring a device worn by the person, e.g. a bracelet attached to the swimmer

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

A receiver (2) incorporates an indicator (11) and an alarm (12), and receives signals (S,S') from each transmitter (1). On receipt of a signal, the indicator is activated, and after receipt of the same signal without interruption during a predetermined time period the alarm is activated. Each transmitter has a modulator (4) which modulates the emitted signal in such a way that it is distinguishable from those emitted from other transmitters. The receiver (2) has a demodulator (9) which demodulates the received SIGNALS FOR identification. The receiver comprises a sound receiver (8), a demodulator, a monitoring circuit (10), an indicator (11) and an alarm (12), and can be connected to mains supply. The sound receiver, incorporating an amplifier, is positioned in a bathing pool for receipt of signals from the various transmitters. The signals, after amplification, are passed to the demodulator.

Description

e! 459 10 15 20 25 30 376 2 tidsperiod verksamgöra larmenheten. e! 459 10 15 20 25 30 376 2 time period operate the alarm unit.

Vid en föredragen utföringsform, vid vilken flera sändarenheter utnyttjas, har varje sändarenhet en modula- tor, som är anordnad att modulera den avgivna signalen på sådant sätt, att denna är särskiljbar från de signaler som avges av övriga sândarenheter, varvid mottagarenheten har en demodulator, som är anordnad att demodulera de av mottagarenheten mottagna signalerna för identifiering.In a preferred embodiment, in which several transmitter units are used, each transmitter unit has a modulator, which is arranged to modulate the output signal in such a way that it is distinguishable from the signals emitted by other transmitter units, the receiver unit having a demodulator, which is arranged to demodulate the signals received by the receiver unit for identification.

Uppfinningen ska nu beskrivas närmare under hänvis- ning till bifogade ritning, vilken visar en utföringsform av anordningen enligt uppfinningen.The invention will now be described in more detail with reference to the accompanying drawing, which shows an embodiment of the device according to the invention.

Fig l är ett blockschema och visar en i anordningen ingående sändarenhet.Fig. 1 is a block diagram showing a transmitter unit included in the device.

Pig 2 är ett blockschema och visar en i anordningen ingående mottagarenhet.Pig 2 is a block diagram showing a receiver unit included in the device.

Den för indikering av drunkningstillbud avsedda an- ordningen enligt föreliggande uppfinning har företrädes- vis ett flertal sändarenheter l, av vilka en visas i fig l, och en mottagarenhet 2, vilken visas i fig 2.The device for indicating drowning incidents according to the present invention preferably has a plurality of transmitter units 1, one of which is shown in Fig. 1, and a receiver unit 2, which is shown in Fig. 2.

Sändarenheten 1 är i ett föredraget utförande ut- formad ungefär som ett armbandsur och avsedd att fästas på en exempelvis i en símbassäng badande persons arm, företrädesvis på överarmen.In a preferred embodiment, the transmitter unit 1 is designed approximately as a wristwatch and is intended to be attached to the arm of a person bathing in a telephone pool, for example, preferably to the upper arm.

Sändarenheten 1 innefattar en tryckgivare 3, en modulator 4, en ljudsändare 5 samt en till dessa via en krets 6 ansluten spänningskälla 7 i form av ett laddnings- bart batteri.The transmitter unit 1 comprises a pressure sensor 3, a modulator 4, an audio transmitter 5 and a voltage source 7 connected to these via a circuit 6 in the form of a rechargeable battery.

Tryckgivaren 3 är anordnad att avkänna det sändar- enheten l omgivande trycket, vilket ökar då sändarenheten 1 och därmed tryckgivaren 3 nedsânkes i vattnet i bas- sängen. Dä tryckgivaren 3 avkänner ett tryck som är högre än ett förutbestämt tryck, slutes den normalt öppna kret- sen 6, varigenom modulatorn 4 och ljudsändaren 5 verksam- göres. Ljudsändaren 5, vilken innehåller en oscillator, avger då en av modulatorn 4 på lämpligt sätt modulerad ljudsignal S, företrädesvis en ultraljudssignal. Modula- torn 4 i varfie.sändarenhet l modulerar exempelvis genom 10 15 20 25 30 459 576 3 amplitudmodulering, frekvensmodulering eller pulsmodule- ring den av sändarenhetens 1 ljudsändare 5 avgivna ljud- signalen S på sàdant sätt, att denna är särskíljbar frán de ljudsignaler S', S" (fig 2) som avges av de övriga sändarenheternas ljudsändare. Härigenom kan de från res- pektive sändarenhet erhållna ljudsignalerna S, S', S" identifieras.The pressure sensor 3 is arranged to sense the ambient pressure of the transmitter unit 1, which increases when the transmitter unit 1 and thus the pressure sensor 3 is immersed in the water in the base bed. When the pressure sensor 3 senses a pressure which is higher than a predetermined pressure, the normally open circuit 6 is closed, whereby the modulator 4 and the sound transmitter 5 are activated. The audio transmitter 5, which contains an oscillator, then emits an audio signal S, suitably modulated by the modulator 4, preferably an ultrasonic signal. The modulator 4 in each transmitter unit 1 modulates, for example, by amplitude modulation, frequency modulation or pulse modulation the sound signal S emitted by the transmitter unit 1 of the transmitter unit 1 in such a way that it is distinguishable from the sound signals S ', S "(Fig. 2) emitted by the sound transmitters of the other transmitter units. In this way the sound signals S, S', S" obtained from the respective transmitter unit can be identified.

Mottagarenheten 2 innefattar en ljudmottagare 8, en demodulator 9, en avkänningskrets 10, en indikeringsenhet ll och en larmenhet 12. Mottagarenheten 2 är avsedd att anslutas till nätspänningen medelst icke visade anslut- ningsorgan.The receiver unit 2 comprises a sound receiver 8, a demodulator 9, a sensing circuit 10, an indication unit 11 and an alarm unit 12. The receiver unit 2 is intended to be connected to the mains voltage by means of connection means (not shown).

Ljudmottagaren 8, vilken innehåller en förstärkare, är avsedd att placeras på en för mottagning av ljudsigna- ler S, S', S" från de olika sändarenheterna lämplig plats i bassängen. Den eller de ljudsignaler S, S', S" som mot- tages av ljudmottagaren 8 förstärkes och sändes vidare till demodulatorn 9, som demodulerar signalen eller sig- nalerna för identifiering. Den eller de demodulerade sig- nalerna sändes vidare till avkänningskretsen lO, som så snart den mottager en signal verksamgör indikeringsenheten ll. Indikeringsenheten ll utgöres här av en lampa, som vid verksamgöring tändes för att indikera att någon eller några personer befinner sig på sådant djup i bassängen, att deras sändarenheter avger ljudsignaler.The audio receiver 8, which contains an amplifier, is intended to be placed in a place in the basin suitable for receiving audio signals S, S ', S "from the various transmitter units. The audio signal (s) S, S', S" which are received taken by the audio receiver 8 is amplified and transmitted to the demodulator 9, which demodulates the signal or signals for identification. The demodulated signal or signals are transmitted to the sensing circuit 10, which, as soon as it receives a signal, activates the indicating unit 11. The indicating unit 11 here consists of a lamp, which is switched on during operation to indicate that one or more persons are at such a depth in the basin that their transmitter units emit sound signals.

Avkänningskretsen l0 identifierar de mottagna de- modulerade signalerna för att, då mottagarenheten 2 utan avbrott mottagit en ljudsignal från en och samma sändar- enhet l under en förutbestämd tidsperiod, t ex 30 sekun- der, verksamgöra larmenheten 12. Larmenheten 12 utgöres här av en sirën, som vid verksamgöring tjuter för att larma om att ett drunkningstillbud föreligger.The sensing circuit 10 identifies the received demodulated signals so that, when the receiver unit 2 has continuously received an audio signal from one and the same transmitter unit 1 for a predetermined period of time, for example 30 seconds, the alarm unit 12 is activated. the siren, which, when activated, howls to alert that there is a drowning incident.

De i anordningen ingående delarna beskrives inte närmare här, eftersom de utgöres av för fackmannen kända komponenter eller pà ett fackmannamässigt sätt kan iord- ningställas av kända kretsar och komponenter.The parts included in the device are not described in more detail here, as they consist of components known to the person skilled in the art or can be prepared in a professional manner by known circuits and components.

Claims (2)

1. 45-9 376 10 15 20 PATENTKRAV l. Anordning för indikering av drunkningstillbud, k a n n e t e c k n a d av åtminstone en sändarenhet (1), vilken är avsedd att bäras av en badande person och an- ordnad att avkänna det omgivande trycket för att vid av- ett tryck som är högre än ett förutbestämt en signal (S), och en mottagarenhet (2), vilken innefattar en indikeringsenhet (ll) och en larmenhet (12) och är anordnad att mottaga signaler (S, S', S“) från känning av tryck avge varje sändarenhet (l) för att vid mottagning av en signal verksamgöra indikeringsenheten (ll) och för att efter mottagning av en och samma signal utan avbrott under en förutbestämd tidsperiod verksamgöra larmenheten (12).1. 45-9 376 10 15 20 PATENT REQUIREMENTS 1. Device for indicating drowning incidents, designed by at least one transmitter unit (1), which is intended to be carried by a bathing person and arranged to sense the ambient pressure in order to a pressure higher than a predetermined signal (S), and a receiver unit (2), which comprises an indicating unit (11) and an alarm unit (12) and is arranged to receive signals (S, S ', S sensing pressure, emitting each transmitter unit (1) to activate the indicating unit (11) when a signal is received and to activate the alarm unit (12) without interruption for a predetermined period of time after receiving one and the same signal. 2. Anordning enligt patentkravet l, vid vilken flera sändarenheter utnyttjas, k ä n n e t e c k n a d därav, att varje sändarenhet (1) har en modulator (4), som är anordnad att modulera den avgivna signalen på sådant sätt, att denna är särskiljbar från de signaler som avges av ,övriga sändarenheter, och att mottagarenheten (2) har en demodulator (9), som är anordnad att demodulera de av mottagarenheten mottagna signalerna för identifiering.Device according to claim 1, in which several transmitter units are used, characterized in that each transmitter unit (1) has a modulator (4) which is arranged to modulate the output signal in such a way that it is distinguishable from the signals. emitted by, other transmitter units, and that the receiver unit (2) has a demodulator (9), which is arranged to demodulate the signals received by the receiver unit for identification.
SE8704257A 1987-11-02 1987-11-02 Near-drowning accident indicator SE459376B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8704257A SE459376B (en) 1987-11-02 1987-11-02 Near-drowning accident indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704257A SE459376B (en) 1987-11-02 1987-11-02 Near-drowning accident indicator

Publications (3)

Publication Number Publication Date
SE8704257D0 SE8704257D0 (en) 1987-11-02
SE8704257L SE8704257L (en) 1989-05-03
SE459376B true SE459376B (en) 1989-06-26

Family

ID=20370077

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8704257A SE459376B (en) 1987-11-02 1987-11-02 Near-drowning accident indicator

Country Status (1)

Country Link
SE (1) SE459376B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959534A (en) * 1993-10-29 1999-09-28 Splash Industries, Inc. Swimming pool alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959534A (en) * 1993-10-29 1999-09-28 Splash Industries, Inc. Swimming pool alarm

Also Published As

Publication number Publication date
SE8704257D0 (en) 1987-11-02
SE8704257L (en) 1989-05-03

Similar Documents

Publication Publication Date Title
US4777474A (en) Alarm system for the hearing impaired
US5486814A (en) Baby pool guard alarm
US4189720A (en) Repeater for smoke and similar alarms
US4110741A (en) Device for monitoring physical activity of persons
US4747085A (en) Method and apparatus for monitoring swimming pools
US6311982B1 (en) Hide and find toy game
US4899135A (en) Child monitoring device
US5651070A (en) Warning device programmable to be sensitive to preselected sound frequencies
US4593273A (en) Out-of-range personnel monitor and alarm
US5523982A (en) Communication apparatus
US4675656A (en) Out-of-range personnel monitor and alarm
US4187502A (en) Swimming pool alarm system
US5790024A (en) Intrusion monitoring system
US5828304A (en) Pool monitoring system
US3207850A (en) Alarm system with personally concealable radio-frequency transmitter
GB2138616A (en) Warning system for the deaf
US4435700A (en) Event detection and indication system
ATE318432T1 (en) HAZARD DETECTOR WITH MODULATED TEST SIGNAL
SE459376B (en) Near-drowning accident indicator
JPH0698045A (en) Alarm detector
JPH08136605A (en) Device for notifying steel tower struck by lightning
WO1980001214A1 (en) Event indication and indication system
GB2038061A (en) Event indication and indication system
FR2440652A1 (en) FREQUENCY MODULATION RECEIVER HAVING A STATION SEARCHING DEVICE
US20010026219A1 (en) Battery having a lost article location module

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8704257-8

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8704257-8

Format of ref document f/p: F