GB2343796A - Lighting control - Google Patents

Lighting control Download PDF

Info

Publication number
GB2343796A
GB2343796A GB9821810A GB9821810A GB2343796A GB 2343796 A GB2343796 A GB 2343796A GB 9821810 A GB9821810 A GB 9821810A GB 9821810 A GB9821810 A GB 9821810A GB 2343796 A GB2343796 A GB 2343796A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
dimmer
switch
triac
control
user interface
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.)
Withdrawn
Application number
GB9821810A
Other versions
GB9821810D0 (en )
Inventor
Steven Appleby
Original Assignee
Steven Appleby
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

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B37/00Circuit arrangements for electric light sources in general
    • H05B37/02Controlling
    • H05B37/0209Controlling the instant of the ignition or of the extinction
    • H05B37/0245Controlling the instant of the ignition or of the extinction by remote-control involving emission and detection units
    • H05B37/0263Controlling the instant of the ignition or of the extinction by remote-control involving emission and detection units linked via power line carrier transmission
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B37/00Circuit arrangements for electric light sources in general
    • H05B37/02Controlling
    • H05B37/0209Controlling the instant of the ignition or of the extinction
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B39/00Circuit arrangements or apparatus for operating incandescent light sources and not adapted to a particular application
    • H05B39/04Controlling
    • H05B39/08Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
    • H05B39/083Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity
    • H05B39/085Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity by touch control
    • H05B39/086Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity by touch control with possibility of remote control

Abstract

A lighting control dimming system allows control of the intensity of a lamp from a plurality of locations. Two parallel connected dimmer switches, DIMMER 1 and DIMMER 2, may be provided, each having a triac, a phase control circuit and a user interface (such as a potentiometer) for setting the triggering phase delay of the triac. A link AA-X between the control circuits in the two dimmer switches enables the circuits to be synchronised in operation to provide a common phase delay. The system may be arranged so that the dimmer that is giving the most power to the lamp overrides the other dimmer. In an alternative arrangement, a triac, a phase control circuit and a user interface are provided at a first location, whereas a second location merely has a user interface which sends a control signal to the first location to set the light level.

Description

LIGHTING CONTROL This invention relates to lighting control. In particular it is concerned with the control of lighting where a dimmer is used to vary the level of light intensity.

A conventional dimmer switch functions by controlling power passed to an electrical load represented by a light bulb.

This switch is often a triac, where a phase delay of the triac drive relative to a mains crossover is used to control the power supplied to, and dissipated in, the load. The operation of such a system assumes that a micro-controller or similar device (logic etc) controls the triac device and the micro-controller serves to convert a user requirement to change the light level by means of a user interface which can take a number of forms such as a potentiometer, up/down switch's, dimmer pad or on/off switch The object of the present invention is to provide a control method and means which takes advantage of existing types of controller so as to maintain convenient features while providing in ability to adjust a dimmer effect from two or more locations.

According to the present invention there is provided a method of operating two dimmer switches connected in parallel by coupling a controller unit in each switch by means of a channel enabling the controllers to be synchronised in operation to provide for a common phase delay.

Examples relating to the invention will now be described with reference to the accompanying drawings of which; Figure 1 shows an early type of two way wiring making use of separate cables; Figure 2 shows a traditional wired two way switch in a house; Figure 3 shows a dimmer switch incorporate in a wiring arrangement otherwise identical to that of Figure 2; Figure 4 shows an embodiment of the present invention; Figure 5 shows an alternative type of existing wiring; Circuits 1,2 and 3 are of further embodiments.

Diagram 3 shows a dimmer switch incorporating a triac device connected between lines T and V. In this way the dimmer allows for control of power, and so of light, levels by way of the dimmer control in the conventional way. In this context the R-U line of a conventional wiring arrangement is redundant.

Diagram 4 shows the dimmer still connected between T and V (Z, AA). A second dimmer is now added to W-Y. As the dimmers are connected in parallel the dimmer that is giving most power to the load will always override the affect of the other dimmer. However as line R-U is otherwise redundant, it is used to synchronise the controllers of the two dimmers.

When dimmer 1 is adjusted the control signal to its triac is changed accordingly. In addition the control circuit of dimmer 1 sends a signal along cable R-U to cause the phase delay of the triac control of dimmer 2 to be changed to that of dimmer 1 Conversely if dimmer 2 is adjusted the control signal to its triac is changed accordingly and the control circuit of dimmer 2 sends a signal along cable U-R and the phase delay of the triac control of dimmer 1 changed to correspond to that of dimmer 2.

The control signal is conveniently a code indicating the exact level of the dimmer or simple data (level change) indicating that the level has increased or decreased.

As both triac's will thereafter be switching at the same time then, in effect one of the triac's and its associated control circuitry is redundant. Therefore for cheapness dimmer 2 does not need all the components of dimmer 1. The saving is small and for commercial reasons of retail outlets stocking two different types of controller it may be more convenient for both controllers to have identical circuits as explained in the description above.

Further dimmers are readily added to provide 3,4 or more way systems.

If cost is an overriding factor then it is possible that a remote dimmer could be used with no active components. In this case the micro-controller in dimmer 1 would monitor the resistance or capacitance of point W-X.

Circuit 3 shows passive components only in a remote dimmer. An AID in the active dimmer controller (or measuring the time the passive unit takes to charge discharge a capacitor) allows easy defection if a switch is pressed or the value of potentiometer 1 changed It may be that in some countries the wiring is different from that shown in Diagram 2 and Diagram 5 shows a possible alternative. In this case the data is transmitted though the cable with the bulb. Data would then be sent when the triac (s) is switched off (that is to say near the zero crossover point).

Dimmer 1 connects to FF-GG + Data to GG, dimmer 2 connects to DD-EE + Data to DD, Circuit 2 shows an overall block diagram. Circuit 1 a typical micro-controller application.

Input 1 Output Buffering and Isolation have not been shown for the sake of simplicity.

Connection for new installations can follow that of Diagram 2. Smaller cables may be used for signal lines on new or upgrading systems.

Claims (4)

  1. CLAIMS 1 A method of operating two or more dimmer switches connected in parallel by coupling a controller unit in each switch by means of a channel enabling the controllers to be synchronised in operation to provide for a common phase delay.
  2. 2 A dimmer switch for use in parallel with one or more similar switches, the switch including: a triac for controlling power to be passed to an electrical load provided by a light source; a controller unit whereby the switch can be coupled to a comparable unit in a similar switch by a channel providing for the controller unit and the comparable unit to which it is coupled to be synchronised in operation to provide for a common phase delay; and a user interface such as a potentiometer.
  3. 3 A method of operating two or more dimmer switches as hereinbefore described with reference to the accompanying drawings.
  4. 4 A dimmmer switch as hereinbefore described with reference to the accompanying drawings
GB9821810A 1998-10-07 1998-10-07 Lighting control Withdrawn GB9821810D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9821810A GB9821810D0 (en) 1998-10-07 1998-10-07 Lighting control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9821810A GB9821810D0 (en) 1998-10-07 1998-10-07 Lighting control

Publications (2)

Publication Number Publication Date
GB9821810D0 GB9821810D0 (en) 1998-12-02
GB2343796A true true GB2343796A (en) 2000-05-17

Family

ID=10840120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9821810A Withdrawn GB9821810D0 (en) 1998-10-07 1998-10-07 Lighting control

Country Status (1)

Country Link
GB (1) GB9821810D0 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003081961A1 (en) * 2002-03-25 2003-10-02 Clipsal Integrated Systems Pty Ltd Improved dimmer circuit arrangement
FR2848376A1 (en) * 2002-12-06 2004-06-11 Legrand Sa Light dimmer switch mounting, has arrangement for controlling a luminous point in an electrical installation
GB2421366A (en) * 2004-12-16 2006-06-21 Get Plc Electronic dimmer control through two-way switching
WO2006133168A3 (en) * 2005-06-06 2007-02-08 Lutron Electronics Co Dimmer switch for use with lighting circuits having three-way switches
WO2007149415A2 (en) * 2006-06-22 2007-12-27 Lutron Electronics Co., Inc. Multiple location dimming system
US7772724B2 (en) 2005-06-06 2010-08-10 Lutron Electronics Co., Inc. Load control device for use with lighting circuits having three-way switches
US7830042B2 (en) 2005-06-06 2010-11-09 Lutron Electronics Co., Inc. Dimmer switch for use with lighting circuits having three-way switches
US7847440B2 (en) 2005-06-06 2010-12-07 Lutron Electronics Co., Inc. Load control device for use with lighting circuits having three-way switches
US8076862B2 (en) 2009-02-09 2011-12-13 Novar Ed&S Limited Dimmer protection
US8212425B2 (en) 2005-06-06 2012-07-03 Lutron Electronics Co., Inc. Lighting control device for use with lighting circuits having three-way switches
US8242708B2 (en) 2007-04-23 2012-08-14 Lutron Electronics Co., Inc. Multiple location load control system
US8350487B2 (en) 2010-06-01 2013-01-08 Novar Ed&S Limited Switch circuit
USD769759S1 (en) 2014-12-15 2016-10-25 Novar Ed&S Limited Door chime with illumination
USD795115S1 (en) 2015-09-16 2017-08-22 Novar Ed&S Limited Door chime
US9818267B2 (en) 2014-12-15 2017-11-14 Novar Ed&S Limited Doorbell system and doorbell chime

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868546A (en) * 1973-03-26 1975-02-25 Hunt Electronics Company Light dimming system for controlling brightness and rate of change of brightness of lights
US4745351A (en) * 1986-04-29 1988-05-17 Lutron Electronics Co., Inc. Multiple location dimming system
GB2233841A (en) * 1989-06-28 1991-01-16 Lutron Electronics Co Touch-operated power control
EP0427709A2 (en) * 1987-04-21 1991-05-15 Lutron Electronics Co., Inc. Power control circuit
US5399940A (en) * 1992-03-31 1995-03-21 Lutron Electronics Co., Inc. Lighting indicating device having plural illuminating elements with all such elements being illuminated with one being greater than the others
EP0901313A2 (en) * 1997-09-05 1999-03-10 ABB PATENT GmbH Dimmersystem

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868546A (en) * 1973-03-26 1975-02-25 Hunt Electronics Company Light dimming system for controlling brightness and rate of change of brightness of lights
US4745351A (en) * 1986-04-29 1988-05-17 Lutron Electronics Co., Inc. Multiple location dimming system
EP0427709A2 (en) * 1987-04-21 1991-05-15 Lutron Electronics Co., Inc. Power control circuit
GB2233841A (en) * 1989-06-28 1991-01-16 Lutron Electronics Co Touch-operated power control
US5399940A (en) * 1992-03-31 1995-03-21 Lutron Electronics Co., Inc. Lighting indicating device having plural illuminating elements with all such elements being illuminated with one being greater than the others
EP0901313A2 (en) * 1997-09-05 1999-03-10 ABB PATENT GmbH Dimmersystem

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7339331B2 (en) 2002-03-25 2008-03-04 Clipsal Intergrated Systems Pty Ltd Dimmer circuit with improved ripple control
WO2003081961A1 (en) * 2002-03-25 2003-10-02 Clipsal Integrated Systems Pty Ltd Improved dimmer circuit arrangement
US7271550B2 (en) 2002-03-25 2007-09-18 Clipsal Integrated Systems Pty Ltd Dimmer circuit arrangement
FR2848376A1 (en) * 2002-12-06 2004-06-11 Legrand Sa Light dimmer switch mounting, has arrangement for controlling a luminous point in an electrical installation
GB2421366A (en) * 2004-12-16 2006-06-21 Get Plc Electronic dimmer control through two-way switching
GB2421366B (en) * 2004-12-16 2008-09-03 Get Plc Electronic dimmer for lighting
US7847440B2 (en) 2005-06-06 2010-12-07 Lutron Electronics Co., Inc. Load control device for use with lighting circuits having three-way switches
US8212424B2 (en) 2005-06-06 2012-07-03 Lutron Electronics Co., Inc. Dimmer switch for use with lighting circuits having three-way switches
US8212425B2 (en) 2005-06-06 2012-07-03 Lutron Electronics Co., Inc. Lighting control device for use with lighting circuits having three-way switches
US7687940B2 (en) 2005-06-06 2010-03-30 Lutron Electronics Co., Inc. Dimmer switch for use with lighting circuits having three-way switches
US7772724B2 (en) 2005-06-06 2010-08-10 Lutron Electronics Co., Inc. Load control device for use with lighting circuits having three-way switches
WO2006133168A3 (en) * 2005-06-06 2007-02-08 Lutron Electronics Co Dimmer switch for use with lighting circuits having three-way switches
US7830042B2 (en) 2005-06-06 2010-11-09 Lutron Electronics Co., Inc. Dimmer switch for use with lighting circuits having three-way switches
CN101589649B (en) 2006-06-20 2013-07-10 路创电子公司 Multiple location dimming system
US7723925B2 (en) 2006-06-22 2010-05-25 Lutron Electronics Co., Inc. Multiple location dimming system
EP2205047A1 (en) * 2006-06-22 2010-07-07 Lutron Electronics Co., Inc. Multiple location dimming system
US8143806B2 (en) 2006-06-22 2012-03-27 Lutron Electronics Co., Inc. Multiple location dimming system
WO2007149415A3 (en) * 2006-06-22 2008-02-28 Lutron Electronics Co Multiple location dimming system
WO2007149415A2 (en) * 2006-06-22 2007-12-27 Lutron Electronics Co., Inc. Multiple location dimming system
US8242708B2 (en) 2007-04-23 2012-08-14 Lutron Electronics Co., Inc. Multiple location load control system
US9301371B2 (en) 2007-04-23 2016-03-29 Lutron Electronics Co., Inc. Load control system providing power and communication over AC line wiring
US8076862B2 (en) 2009-02-09 2011-12-13 Novar Ed&S Limited Dimmer protection
US8350487B2 (en) 2010-06-01 2013-01-08 Novar Ed&S Limited Switch circuit
USD769759S1 (en) 2014-12-15 2016-10-25 Novar Ed&S Limited Door chime with illumination
USD770318S1 (en) 2014-12-15 2016-11-01 Novar Ed&S Limited Door chime
USD772749S1 (en) 2014-12-15 2016-11-29 Novar Ed&S Limited Door chime
USD772748S1 (en) 2014-12-15 2016-11-29 Novar Ed&S Limited Door chime
US9818267B2 (en) 2014-12-15 2017-11-14 Novar Ed&S Limited Doorbell system and doorbell chime
USD795115S1 (en) 2015-09-16 2017-08-22 Novar Ed&S Limited Door chime
USD795728S1 (en) 2015-09-16 2017-08-29 Novar Ed&S Limited Door chime

Also Published As

Publication number Publication date Type
GB9821810D0 (en) 1998-12-02 grant

Similar Documents

Publication Publication Date Title
US4651022A (en) Digital touch operated switch
US6374373B1 (en) Method for commissioning a bus system and a corresponding bus system
US5990635A (en) Multi-zone lighting control system
US5451843A (en) Apparatus and method for providing bilevel illumination
US20070285027A1 (en) Dimmer switch with adjustable high-end trim
US4413211A (en) Control circuit for electrical appliances
US7471051B1 (en) Advanced low voltage lighting system
US20090256483A1 (en) Load Control Device Having a Visual Indication of an Energy Savings Mode
US6031340A (en) Device and method for capacitive bi-level switching of high intensity discharge lighting
US6218787B1 (en) Remote dimming control system for a fluorescent ballast utilizing existing building wiring
US20100134042A1 (en) System for controlling light sources
US6867558B2 (en) Method and apparatus for networked lighting system control
US6731079B2 (en) Industrial lighting control system and method
US20020014972A1 (en) Control station for control system with automatic detection and configuration of control elements
US20090039854A1 (en) Load control device having a gate current sensing circuit
US20020175642A1 (en) Industrial lighting control system
US20110193490A1 (en) Dimmer Adaptable to Either Two or Three Active Wires
US7928663B1 (en) Lighting dimmer adaptable to four wiring configurations
US7687940B2 (en) Dimmer switch for use with lighting circuits having three-way switches
US5170068A (en) Master electrical load control system
US5798581A (en) Location independent dimmer switch for use in multiple location switch system, and switch system employing same
US4802073A (en) Lighting level control apparatus for fluorescent lighting installations
US6365989B1 (en) System and method for controlling one or more mains voltage electrical devices from an extra-low voltage source
US5381078A (en) Control and communication processor potentiometer system for controlling fluorescent lamps
US4889999A (en) Master electrical load control system

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)