WO2003034363A1 - Detecteur d'alarme de mise hors tension a signaux d'entree/sortie - Google Patents

Detecteur d'alarme de mise hors tension a signaux d'entree/sortie Download PDF

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Publication number
WO2003034363A1
WO2003034363A1 PCT/SE2001/002295 SE0102295W WO03034363A1 WO 2003034363 A1 WO2003034363 A1 WO 2003034363A1 SE 0102295 W SE0102295 W SE 0102295W WO 03034363 A1 WO03034363 A1 WO 03034363A1
Authority
WO
WIPO (PCT)
Prior art keywords
alarm
warning device
circuit
power
switch
Prior art date
Application number
PCT/SE2001/002295
Other languages
English (en)
Inventor
Martin Jelf
Original Assignee
Pertinax International 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 Pertinax International Limited filed Critical Pertinax International Limited
Priority to PCT/SE2001/002295 priority Critical patent/WO2003034363A1/fr
Publication of WO2003034363A1 publication Critical patent/WO2003034363A1/fr

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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
    • G08B21/185—Electrical failure alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector

Definitions

  • This invention relates to warning devices, which detect failure in a power system.
  • warning devices it is today known to use warning devices to detect and warn of a power interruption between a power source and an electrical appliance connected thereto.
  • Such a warning device can for example be studied in the US Patent 4,097,843, which refers to a warning device being connectable between an electrical appliance and a power source through a plug and leads.
  • the alarm system of this warning device consists of a bell, a battery and a circuit there between, which circuit comprises an on-off switch connected to a spring-biased blade.
  • the spring-biased blade is drawn towards a coil as long as the coil is energised by the power source, thus keeping the circuit open.
  • the coil becomes de- energised and the spring-biased blade falls back closing the bell-alarm circuit, and the bell rings
  • warning device comprises several nonelectrical parts, which makes it sensitive to outer damage and also less durable.
  • the non-electrical parts are also relatively heavy and the device therefore must rest on some sort of support when being used, which is unpractical.
  • a further disadvantage with the warning device according to the US Patent 4,097,843 is that it comprises an audio alarm only, and is consequently not adapted to be used by people with impaired hearing or in places where loud sound-levels are frequent, such as dance halls or concert halls.
  • Figure 1 shows a perspective view of the preferred embodiment of the present invention
  • Figure 2 shows a perspective view of the preferred embodiment of the present invention
  • Figure 3 shows a cross section view of the preferred embodiment of the present invention
  • Figure 4 shows a block diagram generally illustrating a detection arrangement for detecting a malfunctioning in an appliance or a power source
  • Figure 5 shows a schematic circuit diagram of the arrangement of Fig. 4.
  • a device 1 is designed with a female cable connector 13, to connect the device 1 with an appliance 4, and a male connector (not shown in Fig. 1), to be connected to a main power source in the shape of a wall socket 3 through an extension flex 5.
  • the connectors 13 are both of IEC-320 type and the female connector 13 is attached to the device 1 by means of a strain-release 17 in order to protect the wires inside the cable.
  • an adapter could replace the extension flex 5, and the device 1 could thus be attached to the wall socket 3.
  • Such an arrangement would have the advantage of being more discreet and less ungainly.
  • an ordinary female connector to be connected to the appliance 4 through an adapter or an exten- sion flex, could replace the female cable connector 13.
  • FIG. 2 the device 1 of Fig. 1 is displayed from a perspective view.
  • a boxlike housing 120 having detachable top and bottom portions 121 and 122, accommodating the main components of the arrangement, constitutes the device 1.
  • the top portion 121 functions in the preferred embodiment as a removable cover of the housing 120, which removal exposes the interior of the device 1.
  • the housing 120 is preferably constructed of ABS-f ⁇ re retardant moulded plastic.
  • a plug (not shown in Fig. 2) of the male connector (not shown in Fig. 2) is mounted between the top and bottom portions 121 and 122 of the housing 120 on the opposite side of the female cable connector 13, and is adapted to connect into a rubber cable assembly (not shown in Fig. 2).
  • the device 1 is provided with a visual alarm 91 and an audio alarm (not shown in Fig. 2).
  • the visual alarm 91 comprises a light-emitting diode (LED) 93 arranged at an opening 94 in the top portion 121, preferably covered with a protective transparent membrane 130, while the audio alarm comprises a buzzer (not shown in Fig. 2) located closer to the male connector, indicated only by the small apertures 95 in the top portion 121.
  • a somewhat larger opening 78 through which a slide switch 79 is manoeuvrably arranged.
  • the device 1 includes a reset button 53, projecting from the inner of the housing 120 through an aperture 119 in the top portion 121 for deactivation and activation of the alarms 91 of the present invention.
  • the implementation of the slide-switch 79 is advantageous, giving a user the opportunity to choose the type of alarm 91 to be used. It should also be noted that by using a slide-switch 79 instead of a pin, sharp edges and projecting attributes are avoided, which is to prefer, as the device 1 might be placed on the ground.
  • the slide-switch 79 is also safer than, for example, a button-switch or a pin, which very easily can be unintentionally operated.
  • the reset button is optional, and can in an alternative embodiment be completely removed, since the alarms, in the preferred embodiment as well as in the alternative embodiment, preferably are automatically deactivated as soon as power is restored.
  • Fig 3 illustrates a cross-section of the device 1 of Fig. 1 and 2 taken along the principal axis.
  • the LED 93 as well as the slide-switch 79 and the reset button 53, is connected to an Alarm Circuit (not shown in Fig. 3) on a circuit board 123, in the inner of the housing 120. So is the buzzer, though not visible in Fig 3.
  • the Alarm Circuit is powered by a battery 41, preferably a nickel metal hydride battery with a life span of 2 - 3 years, which is recharged as long as the device is fed with A.C. and activated only in the case of a halting of said A.C.
  • a warning device connected between an A.C. Outlet 100 and an electrical appliance, monitors a current conducted there between.
  • the current from either the A.C. Outlet 100 or from an Appliance Current Inlet 10, is fed to the device, the current is conducted to a Voltage Conversion Circuit 20 within the device.
  • the A.C. is directed to a D.C. Rectifier Filter Regulation 30, where the A.C. is converted to a D.C. at about 4.5 to 5 volts for powering of the device.
  • D.C. from the D.C. Rectifier Filter Regulation 30 is then fed to a Charge Circuit and Rechargeable Battery Backup 40 (only schematically shown) to recharge a rechargeable battery when necessary.
  • the battery powers the visual or the audiovisual alarm in the absence of a main power supply and/or in an event of a malfunc- tioning in the electrical appliance, which malfunctioning results in a halted current.
  • Power from the D.C. Rectifier Filter Regulation 30 is also directed to a Power down Detector 50, which monitors the arrangement and reacts to an absence of a D.C. by triggering a Chirping/Flashing Control 60.
  • the Chirping/Flashing Control 60 generates a visual or an audio-visual alert, depending on the position of the slide-switch, as the Alarm Circuit 90 is activated. After the alarm is signalled it continuously flashes or chirps and flashes until reset by the reset-button or until power is restored.
  • the preferred embodiment, shown in Fig. 4, can for example be used together with electrical appliances in a hospital, such as alternating pressure therapy mat- tresses used by bedridden patients to avoid and heal bedsores, to make a caregiver attentive to malfunctions in the appliances and sudden power failures.
  • electrical appliances in a hospital such as alternating pressure therapy mat- tresses used by bedridden patients to avoid and heal bedsores, to make a caregiver attentive to malfunctions in the appliances and sudden power failures.
  • the wiring diagram shows the node-to-node wiring as well as the physical relationship between all circuit elements, connected in a fashion to provide the arrangement, as described above.
  • the Equipment Current Inlet 10 (only schematically shown) comprises the plug 14 of the male connector 15 connected to a node 11 and also a node 12 connected to the female cable connector 13.
  • the A.C, fed into the device through the plug 14, is thus further conducted through the node 11 into the Voltage Conversion circuit 20 (only schematically shown).
  • the Voltage Conversion Circuit 20 comprises a limit protection voltage circuit provided by diodes 21, 22 and a transformer 23.
  • the transformer 23 detects the halted flow of electrons, whereby the battery circuit 40, comprising a diode 42 and a battery 41, is automatically activated.
  • the diode 42 is provided as a path controller to make sure that the battery 41 is not discharged and the battery 41 is preferably of a nickel metal hydride type, which in an efficient way combines non- polluting qualities with excellent recharge-capabilities.
  • a full-wave rectifier input circuit comprising diodes 31, 32, 33, 34, in the D.C. Rectifier Filter Regulation 30 (only schematically shown) converts it to a D.C. at a regulated voltage of about 4.2 to 5 volts, which D.C is used to continually recharge the battery.
  • the D.C. Rectifier Filter Regulation 30 also comprises an energy storage capacitor 35, a resistor 36 and yet another diode 37.
  • the above mentioned power failure results in a D.C. interruption, which is detected by the Power down Detector circuit 50 (only schematically shown) and its associated circuitry. Signals are thereafter sent through a NAND gate 59 to the Chirping/Flashing Control 60 (only schematically shown) to trigger the LED 91 and perhaps also the buzzer 96. An optional CMOS IC NAND or NOR can be used as an energy-saver for the circuit system. Finally, the signals are detected by the Chirping/Flashing Control 60 through the resistor 61, after which the signals reach to the base of transistor 62. As a result, the transistor 62 is switched on and the capacitor 63 discharged, generating voltage across resistors 64 and 65. Accordingly, a derived signal, which reaches the voltage comparator 67, generates a positive difference of voltage therein.
  • the comparator 67 then produces an output to an oscillatory circuit, which comprises a resistor 68 and a capacitor 69, which may be an astable multivibrator, and a diode 73 and a capacitor 69, optional and implemented to control power con- sumption, e.g. to save power.
  • the oscillatory circuit activates and generates pulses through a comparator 74 to periodically turn on a transistor 77, whereby the Alarm Circuit 90 (only schematically shown) will be activated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

La présente invention concerne un dispositif d'alarme (1), lequel détecte une défaillance dans un système électrique. Ledit dispositif comprend un circuit d'alarme (90) permettant d'indiquer une défaillance électrique, la détection de défaillance électrique étant effectuée par des éléments purement électriques. Ledit dispositif (1) est léger et autoporteur.
PCT/SE2001/002295 2001-10-19 2001-10-19 Detecteur d'alarme de mise hors tension a signaux d'entree/sortie WO2003034363A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2001/002295 WO2003034363A1 (fr) 2001-10-19 2001-10-19 Detecteur d'alarme de mise hors tension a signaux d'entree/sortie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2001/002295 WO2003034363A1 (fr) 2001-10-19 2001-10-19 Detecteur d'alarme de mise hors tension a signaux d'entree/sortie

Publications (1)

Publication Number Publication Date
WO2003034363A1 true WO2003034363A1 (fr) 2003-04-24

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Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006092149A1 (fr) * 2005-03-03 2006-09-08 Von Scholten Management Group Aps Unite d'alimentation avec dispositif d'alerte
US7121899B2 (en) 2003-06-25 2006-10-17 Friwo Geratebau Gmbh Plug connection for a mobile terminal
CN103235230A (zh) * 2013-04-16 2013-08-07 卫斌鹏 一种无源断电自动报警装置
CN114446022A (zh) * 2022-01-18 2022-05-06 武汉伊莱维特电力科技有限公司 一种基于城市地缆通道隐患预警装置

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002397A (en) * 1975-09-29 1977-01-11 Wolsk Associates, Ltd. Connector for electric plug
US4003044A (en) * 1974-09-30 1977-01-11 Wolsk Associates, Ltd. Alarm device having an oscillator
US4074245A (en) * 1976-07-19 1978-02-14 Podany John P Power failure alarm
US4237450A (en) * 1978-11-13 1980-12-02 Canez Antonio R Appliance theft alarm
US4255669A (en) * 1979-09-17 1981-03-10 Gte Laboratories Incorporated Sensing apparatus
US4419658A (en) * 1981-04-01 1983-12-06 T. J. Company Portable combination lamp, smoke detector and power failure alarm
EP0109227A1 (fr) * 1982-11-03 1984-05-23 Video Alarms & Systems Company Limited Dispositif d'alarme
GB2158277A (en) * 1983-11-03 1985-11-06 Raymond John Corton Continuous security alarm for current consuming equipments
GB2228353A (en) * 1989-02-18 1990-08-22 Kenwood Ltd Electrical appliances
GB2283870A (en) * 1993-11-09 1995-05-17 Yin Hong Wong Electrical apparatus with fault indicator
GB2285880A (en) * 1994-01-13 1995-07-26 Radamec Electronics Limited Electronic equipment alarm device
US5663711A (en) * 1995-06-07 1997-09-02 Aliter Industries Power failure alarm
US6229450B1 (en) * 1999-03-15 2001-05-08 The Detroit Edison Company Power interruption monitoring apparatus

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003044A (en) * 1974-09-30 1977-01-11 Wolsk Associates, Ltd. Alarm device having an oscillator
US4002397A (en) * 1975-09-29 1977-01-11 Wolsk Associates, Ltd. Connector for electric plug
US4074245A (en) * 1976-07-19 1978-02-14 Podany John P Power failure alarm
US4237450A (en) * 1978-11-13 1980-12-02 Canez Antonio R Appliance theft alarm
US4255669A (en) * 1979-09-17 1981-03-10 Gte Laboratories Incorporated Sensing apparatus
US4419658A (en) * 1981-04-01 1983-12-06 T. J. Company Portable combination lamp, smoke detector and power failure alarm
EP0109227A1 (fr) * 1982-11-03 1984-05-23 Video Alarms & Systems Company Limited Dispositif d'alarme
GB2158277A (en) * 1983-11-03 1985-11-06 Raymond John Corton Continuous security alarm for current consuming equipments
GB2228353A (en) * 1989-02-18 1990-08-22 Kenwood Ltd Electrical appliances
GB2283870A (en) * 1993-11-09 1995-05-17 Yin Hong Wong Electrical apparatus with fault indicator
GB2285880A (en) * 1994-01-13 1995-07-26 Radamec Electronics Limited Electronic equipment alarm device
US5663711A (en) * 1995-06-07 1997-09-02 Aliter Industries Power failure alarm
US6229450B1 (en) * 1999-03-15 2001-05-08 The Detroit Edison Company Power interruption monitoring apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7121899B2 (en) 2003-06-25 2006-10-17 Friwo Geratebau Gmbh Plug connection for a mobile terminal
WO2006092149A1 (fr) * 2005-03-03 2006-09-08 Von Scholten Management Group Aps Unite d'alimentation avec dispositif d'alerte
CN103235230A (zh) * 2013-04-16 2013-08-07 卫斌鹏 一种无源断电自动报警装置
CN103235230B (zh) * 2013-04-16 2015-11-18 国网山西省电力公司晋城供电公司 一种无源断电自动报警装置
CN114446022A (zh) * 2022-01-18 2022-05-06 武汉伊莱维特电力科技有限公司 一种基于城市地缆通道隐患预警装置
CN114446022B (zh) * 2022-01-18 2022-07-19 武汉伊莱维特电力科技有限公司 一种基于城市地缆通道隐患预警装置

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