SE459376B - Near-drowning accident indicator - Google Patents
Near-drowning accident indicatorInfo
- 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
Links
- 208000006079 Near drowning Diseases 0.000 title 1
- 238000003287 bathing Methods 0.000 claims abstract description 3
- 206010013647 Drowning Diseases 0.000 claims description 3
- 230000003321 amplification Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms 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
-
- 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
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms 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
- G08B21/088—Alarms 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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5959534A (en) * | 1993-10-29 | 1999-09-28 | Splash Industries, Inc. | Swimming pool alarm |
-
1987
- 1987-11-02 SE SE8704257A patent/SE459376B/en not_active IP Right Cessation
Cited By (1)
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 |
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