GB2465190A - Power supply controller - Google Patents

Power supply controller Download PDF

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Publication number
GB2465190A
GB2465190A GB0820503A GB0820503A GB2465190A GB 2465190 A GB2465190 A GB 2465190A GB 0820503 A GB0820503 A GB 0820503A GB 0820503 A GB0820503 A GB 0820503A GB 2465190 A GB2465190 A GB 2465190A
Authority
GB
United Kingdom
Prior art keywords
projector
control unit
remote control
unit
time
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
GB0820503A
Other versions
GB0820503D0 (en
GB2465190B (en
Inventor
Robert Horsfall
Andrew David Steers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0820503A priority Critical patent/GB2465190B/en
Publication of GB0820503D0 publication Critical patent/GB0820503D0/en
Publication of GB2465190A publication Critical patent/GB2465190A/en
Application granted granted Critical
Publication of GB2465190B publication Critical patent/GB2465190B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4436—Power management, e.g. shutting down unused components of the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3144—Cooling systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • H05B37/0227—
    • H05B37/0281—
    • 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2988—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/16—Controlling the light source by timing means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Ecology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Remote Sensing (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Projection Apparatus (AREA)

Abstract

A power supply control unit 1 for automatically turning off a multimedia projector or an interactive whiteboard. The unit comprises a battery powered timer 2, a relay, an external light sensor 7 and a remote control unit. The light sensor is located in front of the projector lens and when it is triggered by light emitted by the projector it sends power, via the relay, to the remote control unit. At a given time programmed into the timer, a signal is sent to the remote control unit to turn the projector off safely, allowing the projector's built in fan to gradually cool the bulb. The unit is particularly suitable for use in schools where the programmed times may be break time, dinner time and home time. The projector is turned back on manually.

Description

Description Document
Bulbmaster automatic bulb life / electricity saver The idea of this invention came into being as we are involved with the supply, installation and maintenance of Interactive White Boards and Multimedia projectors in schools. The Interactive White Board has now largely replaced the chalk blackboard in schools and it enables the teacher to present computer based multimedia via the computer as a teaching aid.
The problem we have identified is that many teachers leave the units turned on all day long, even when they are not in use. The projectors run on average at a 1000 watts and the projector bulbs have a limited life span, typically around 2000 -4000 hours, this can be drastically limited by incorrectly turning the projector off at the mains rather than letting the units internal cooling fan gradually cooling the bulb after safe power down.
When asked by several head teachers if there is a commercially available devise to turn the projector off automatically in a safe manner allowing the bulb to cool we realised that there is no such device, so we set about designing a solution to this problem.
Our invention works by managing when the projector is turned off, I.E, at break time, dinner time, afternoon break and home time. It does not turn the projector back on, that is up to the teacher.
The unit operates as follows: The main unit contains a battery powered timer which is wired to a relay. In front of the projector lens sits a small light sensor, this does not affect the projected image on the Interactive White Board. When the sensor is triggered by the light emitted by the projector it sends power via a relay to a programmed remote control unit.
At a given time programmed into the timer, a signal is sent to the remote control to turn the projector off safely. The unit cannot ever turn the projector on through the timer as it requires light from the projector beam to arm the remote control relay circuit. The projector must be turned back on manually,hence no light from projector, the power down circuit cannot be triggered.
The benefits are increased bulb life, the unit not being turned off at the mains at the end of the day and causing the bulb to fracture due to unregulated cooling and savings on several 1000 watt units running in the school at the same time when not required.
The main circuit diagram shows how the timer and remote control are managed by our own circuit design with relay and sensor.
Drawing References Diagram 1/2 shows the layout of the Bulbmaster unit housed in it's Plastic box.
Figure 1 (1) Shows the box unit approximate 150mm x 100mm x 80mm (2) Shows the digital timer housed in the unit (3) Shows the 240 Volt in socket to the transformer (4) Shows the 3.5mm jack socket for the external light sensor (5) Shows the 3.5mm jack plug (6) Shows the sensor lead (7) Shows the Light Sensor Figure 2 Figure 2 shows the opposite end of the unit with various programming switches and LEDs (8) Shows the device select switch (9) Shows the store Switch (10) Shows the transmit LED (11) Shows the receive or programme LED (12) Shows the programming LED Diagram 2/2 shows the electronic schematic diagram of the inside of the unit.
(1) 3.5mm Socket (2) Light sensor unit (3) Remote (Learning)
GB0820503A 2008-11-10 2008-11-10 Power supply controller Expired - Fee Related GB2465190B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0820503A GB2465190B (en) 2008-11-10 2008-11-10 Power supply controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0820503A GB2465190B (en) 2008-11-10 2008-11-10 Power supply controller

Publications (3)

Publication Number Publication Date
GB0820503D0 GB0820503D0 (en) 2008-12-17
GB2465190A true GB2465190A (en) 2010-05-12
GB2465190B GB2465190B (en) 2011-03-09

Family

ID=40139639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0820503A Expired - Fee Related GB2465190B (en) 2008-11-10 2008-11-10 Power supply controller

Country Status (1)

Country Link
GB (1) GB2465190B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2484304A (en) * 2010-10-06 2012-04-11 Robert Horsfall Turning off a projector
CN103605336A (en) * 2013-11-08 2014-02-26 安徽康海时代科技有限公司 Central control device and central control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495385A (en) * 1993-09-07 1996-02-27 Hsiu; Peng H. Fully automatic, photosensor-controlled time switch device
JP2005269864A (en) * 2004-03-22 2005-09-29 Seiko Epson Corp Power supply unit, and projector and electronic equipment using the power supply unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495385A (en) * 1993-09-07 1996-02-27 Hsiu; Peng H. Fully automatic, photosensor-controlled time switch device
JP2005269864A (en) * 2004-03-22 2005-09-29 Seiko Epson Corp Power supply unit, and projector and electronic equipment using the power supply unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2484304A (en) * 2010-10-06 2012-04-11 Robert Horsfall Turning off a projector
GB2484304B (en) * 2010-10-06 2012-10-10 Robert Horsfall Turning off a projector
US8807764B2 (en) 2010-10-06 2014-08-19 Robert Horsfall Method and apparatus for turning off a projector
CN103605336A (en) * 2013-11-08 2014-02-26 安徽康海时代科技有限公司 Central control device and central control system

Also Published As

Publication number Publication date
GB0820503D0 (en) 2008-12-17
GB2465190B (en) 2011-03-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20171110