CA2121090A1 - Microprocessor-controlled strobe light - Google Patents

Microprocessor-controlled strobe light

Info

Publication number
CA2121090A1
CA2121090A1 CA002121090A CA2121090A CA2121090A1 CA 2121090 A1 CA2121090 A1 CA 2121090A1 CA 002121090 A CA002121090 A CA 002121090A CA 2121090 A CA2121090 A CA 2121090A CA 2121090 A1 CA2121090 A1 CA 2121090A1
Authority
CA
Canada
Prior art keywords
switch
time
storage device
energy storage
energy
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.)
Granted
Application number
CA002121090A
Other languages
French (fr)
Other versions
CA2121090C (en
Inventor
Joseph Kosich
Edward V. Applegate
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.)
Cooper Wheelock Inc
Original Assignee
Wheelock Inc
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 Wheelock Inc filed Critical Wheelock Inc
Publication of CA2121090A1 publication Critical patent/CA2121090A1/en
Application granted granted Critical
Publication of CA2121090C publication Critical patent/CA2121090C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes

Landscapes

  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A flash tube power circuit includes a switch which in a first position regulates the storage over time of energy in a first energy storage device and in a second position allows the transfer of energy from the first energy storage device to a second energy storage device. A microcontroller receives the input voltage and then samples and digitizes it for input into a lookup table. The microcontroller repeatedly cycles the switch between flashes by controlling the time the switch is in its first position. The lookup table output provides the signal for determining the time the switch remains in its first position. The time interval from the last flash controls the time the switch is in its second position. The cycling of the switch is controlled accordingly such that the second energy storage device acquires the predetermined amount of energy for the flash just as the triggering circuit is initiated by the microcontroller. Moreover, the microcontroller controls the switch in a way such that the time the switch is in its first position is maximized and the time the switch is in its second position is generally decreased relative to the time since the last flash. This helps to minimize the peak current drawn by the first energy storage device. In addition, the strobe light circuit is capable of determining if the input voltage is D.C. or is full wave rectified and controls the switch accordingly.
CA002121090A 1993-05-14 1994-04-12 Microprocessor-controlled strobe light Expired - Lifetime CA2121090C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/061,965 1993-05-14
US08/061,965 US5341069A (en) 1993-05-14 1993-05-14 Microprocessor-controlled strobe light

Publications (2)

Publication Number Publication Date
CA2121090A1 true CA2121090A1 (en) 1994-11-15
CA2121090C CA2121090C (en) 2002-04-02

Family

ID=22039336

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002121090A Expired - Lifetime CA2121090C (en) 1993-05-14 1994-04-12 Microprocessor-controlled strobe light

Country Status (4)

Country Link
US (2) US5341069A (en)
CA (1) CA2121090C (en)
ES (1) ES2102945B1 (en)
GB (1) GB2278024B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070210900A1 (en) * 1993-09-24 2007-09-13 Stewart Albert J Building alarm system with synchronized strobes
US5559492A (en) * 1993-09-24 1996-09-24 Simplex Time Recorder Co. Synchronized strobe alarm system
US6741164B1 (en) * 1993-09-24 2004-05-25 Adt Services Ag Building alarm system with synchronized strobes
US5400009A (en) 1993-10-07 1995-03-21 Wheelock Inc. Synchronization circuit for visual/audio alarms
US5514937A (en) * 1994-01-24 1996-05-07 Motorola Apparatus and method for compensating electron emission in a field emission device
US5608375A (en) * 1995-03-20 1997-03-04 Wheelock Inc. Synchronized visual/audible alarm system
US6194994B1 (en) 1995-03-20 2001-02-27 Wheelock, Inc. Apparatus and method for synchronizing visual/audible alarm units in an alarm system
US6906616B1 (en) * 1995-03-20 2005-06-14 Wheelock, Inc. Apparatus and method for synchronizing visual/audible alarm units in an alarm system
US5659287A (en) * 1995-03-21 1997-08-19 General Signal Corporation Strobe synchronization for averting convulsive reactions to strobe light
WO1998015997A1 (en) * 1996-10-10 1998-04-16 Chartec Laboratories A/S A digitally controlled switch mode power supply for charging rechargeable batteries
US6195588B1 (en) * 1997-12-31 2001-02-27 Sloan Valve Company Control board for controlling and monitoring usage of water
US6661337B2 (en) * 2001-01-23 2003-12-09 Honeywell International, Inc. Processor based strobe with feedback
US6822400B1 (en) 2001-01-23 2004-11-23 Honeywell International, Inc. Processor controlled strobe
US6373197B1 (en) * 2001-03-09 2002-04-16 Ming-Cheng Chang Controller for flash lamps sharing a common power source and controlling method thereof
US7218205B2 (en) * 2003-05-05 2007-05-15 Honeywell International, Inc. Variable candela strobe with constant trigger voltage
US20060139152A1 (en) * 2004-12-09 2006-06-29 Honeywell International, Inc. Multi-frequency fire alarm sounder
US8134300B2 (en) * 2008-08-08 2012-03-13 Mag Instrument, Inc. Portable lighting devices
US10916958B2 (en) 2017-12-21 2021-02-09 Carrier Corporation Optimized adaptive charging method for strobe
EP3749136A4 (en) * 2018-02-09 2021-11-24 Life Preservation Technologies, LLC Portable ambulance with site evaluation
GB2573313A (en) * 2018-05-02 2019-11-06 Eaton Intelligent Power Ltd Alarm notification device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE783136A (en) * 1971-05-07 1972-09-01 Rank Organisation Ltd IMPROVEMENTS TO SCENE LIGHTING ADJUSTMENT DEVICES
US4029994A (en) * 1976-01-05 1977-06-14 Uop Inc. Emergency flashing light system for indicating exits of passenger carriers
US4109246A (en) * 1976-06-29 1978-08-22 General Signal Corporation Alarm system with repeat of alarm interrupted for priority alarm
US4065767A (en) * 1976-09-01 1977-12-27 General Signal Corporation Programmable electronic siren
US4595978A (en) * 1982-09-30 1986-06-17 Automatic Power, Inc. Programmable control circuit for controlling the on-off operation of an indicator device
US4613797A (en) * 1984-07-27 1986-09-23 Federal Signal Corporation Flash strobe power supply
US4623929A (en) * 1985-05-03 1986-11-18 Eastman Kodak Company Flash tube simmer circuitry for a film video player electronic strobe light
IT1187882B (en) * 1986-01-28 1987-12-23 Fiat Auto Spa CONTROL SYSTEM AND ACOUSTIC SIGNALING OF FUNCTIONAL CONDITIONS OF A VEHICLE
US4924149A (en) * 1986-12-23 1990-05-08 Asahi Kogaku Kogyo Kabushiki Kaisha Apparatus for controlling the charging of a main capacitor of a flash unit
US4952906A (en) * 1989-01-27 1990-08-28 General Signal Corporation Strobe alarm circuit
US5019805A (en) * 1989-02-03 1991-05-28 Flash-Alert Inc. Smoke detector with strobed visual alarm and remote alarm coupling
US4935951A (en) * 1989-11-27 1990-06-19 Ek-Ris Enterprises, Inc. Emergency telephone actuated signal light or the like device and method
US5041767A (en) * 1990-03-30 1991-08-20 Bertonee Inc. Digital controller for gas discharge tube
US5128591A (en) * 1991-07-10 1992-07-07 Wheelock Inc. Strobe alarm circuit

Also Published As

Publication number Publication date
US5341069A (en) 1994-08-23
CA2121090C (en) 2002-04-02
GB9409626D0 (en) 1994-07-06
GB2278024A (en) 1994-11-16
USRE35837E (en) 1998-07-07
GB2278024B (en) 1997-10-15
ES2102945A1 (en) 1997-08-01
ES2102945B1 (en) 1998-04-01

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140414