SE1651358A1 - Lighting system and method for automatic control of an illumination pattern - Google Patents

Abstract

The present invention generally relates to a lighting system for illuminating an area, specifically where the lighting system is adapted for automatic control of an illumination pattern based on previous user behavior and dependent on a current sunrise and sunset time at a physical location of the illumination system. The invention also relates to a corresponding method and a computer program product.

Description

LIGHTING SYSTEM AND METHOD FORAUTOMATIC CONTROL OF AN ILLUMINATION PATTERN TECHNICAL FIELD The present invention generally relates to a lighting system for illuminating anarea, specif1cally where the lighting system is adapted for automatic control of anillumination pattern based on previous user behavior and dependent on current day of theyear and a physical location of illumination system. The invention also relates to a corresponding method and a computer program product.

BACKGROUND OF THE INVENTION In using a conventional lighting system, for example in a residential home,each luminaire, such as for example arranged in a ceiling of a room, is controlled using anindividually provided light control unit, such as a push-on/push-o ff switch button. Recently,there has been a desire to improve the overall control of lighting and possibly furtherelectrical equipment, forrning the so-called “intelligent home”, where intelligent lightingsystems combine light emitting diodes (LEDs), embedded sensors and controls, and low-costpervasive networking to create an integrated illumination system that is highly responsive toits environment. Benefits of some or all such intelligent systems may include, but are notlimited to, a much higher quality of light tailored specif1cally to user needs and significantenergy savings, compared to legacy lighting system technologies.

An example of such an intelligent lighting system is disclosed in US7911158,providing a lighting system that introduces a minor change to a given set of parameters thataffect a lighting ambiance associated with an environment, and collects the user's response tothe change. Based on the user's response, the system leams which changes to whichparameters lead to an improved effect. By repeating the change-feedback sessions, the systemapproaches an optimal setting for achieving the desired ambiance in the given environment.The change-feedback session occurs for example each time a light is tumed on, and thefeedback is collected when the light is tumed off, using a specif1cally formed multiple switcharrangement. If the light is tumed off using one switch, the feedback is positive; if the light istumed off using an altemative switch, the feedback is negative.

Even though US7911158 provides an interesting approach to lighting control,the use will have to actively react to an automatic change introduced by the lighting system, over time being somewhat intrusive to the users, since the user will have to react to adjustments proposed by the system. Thus, it Would be desirable to introduce a novelmethodology, being less intrusive as compared to prior art and more adaptable to the actual behavior of the user.

SUMMARY OF THE INVENTION According to an aspect of the invention, the above is at least partly met by alighting system for illuminating an area, comprising a controllable luminaire, a control unitconnected and adapted to control the controllable luminaire to illuminate the area accordingto an illumination pattem, a manually operate control interface connected to the control unit,the control interface adapted to generate a control signal indicative of a user desire to adjustthe illumination pattem provided by the controllable luminaire, Wherein the control unit isconf1gured to determine a user desired illuminating pattem based a plurality of consecutivelyreceived control signals for adjusting the illumination pattem, adjust the user desiredillumination pattem based on an adjustment signal from a clock module comprised With thecontrol unit, the adjustment signal being based on current day of the year and a physicallocation of the control unit, and automatically control the controllable luminaire according tothe adjusted user desired illumination pattem independent on reception of further controlsignals from the user operated control interface.

By means of the present disclosure, there is provided a self-leaming lightingsystem. In comparison to the above-mentioned prior-art implementation, the disclo sedlighting system over time “mimics” the user behavior With the intention to automate thelighting behavior previously performed by the user. HoWever, to be able to accuratelygenerate a user behavior as seen over time, the disclosed lighting system further takes intoaccount an adjustment signal from a clock module, Where the adjustment signal is based onboth of a physical location of Where the lighting control takes places as Well as a current dayof the year.

The user Will in a start-up phase of using the lighting system control thecontrollable luminaire, using a manually operated user interface, such as a rotary dimmerknob, a button, etc., Where after the lighting system gradually Will take over control toautomate hoW the user environment is illuminated. Since the disclo sed lighting system alsoWill take into account both of the current day of the year and the physical location, thelighting pattem provided Will in a much more realistic Way mimic hoW the user in fact WouldWant his environment to be illuminated. That is, due to having knowledge of Where the lighting system is located, it may for example be possible to determine a sunrise and sunset time at the physical location of the control unit, meaning that the provided illuminationpattern may be adjusted to account for the solar altitude, possibly adapting the illuminationpattem based on an expected amount of incident/ ambient (sun) light. By also making use ofthe current day of the year, a slightly shifting user behavior may be made use of, for example,Where the user spends less time at home during the summer period as compared to the Winterperiod, When automating the illumination of the user environment.

The control module may in one embodiment comprise an astronomic clock.The lighting system may in one embodiment further comprise GPS circuitry connected to thecontrol unit and adapted to determine the physical location of the control unit. The physicallocation may altematively be e. g. manually “programmed” With the control unit. Thephysical location either deterrnined automatically using the GPS circuitry or manually, istypically used as an input to the astronomic clock for deterrnining sunrise and sunset times.

The lighting system may in one embodiment further comprise a light sensorfor measuring incident light to be provided as information to the control unit. Such animplementation may in some situations, for example Where the user environment lacksWindows, be used for compensating for the expected amount of ambient light as mentionedabove. Altematively, information relating to a measured incident light may also be used forcompensating a case Where the user environment receives a high amount of direct sun light.

The user environment may in one embodiment be a defined indoor area, suchas the user°s home or office. HoWever, the user environment may also partly comprise anoutdoor area, such as a patio, as Will be further elaborated below.

In a preferred embodiment of the present disclosure, the lighting systemcomprises a plurality of individually controllable luminaires, in combination adapted toilluminate the user”s environment With the user desired illumination pattem. The plurality ofindividually controllable luminaires may be electrically connected to the control unit usingelectrical Wiring, or Wirelessly connected to the control unit. A combination thereof is ofcourse possible.

Preferably, the control unit comprises a Wireless transceiver forcommunicating an illumination command to the plurality of individually controllableluminaires. The transceiver may for example be one of a Bluetooth or Wi-Fi transceiver,adapted for Wireless communication With the plurality of individually controllableluminaires.

In a preferred embodiment of the present disclosure, the lighting system further comprising an occupancy sensor connected to the control unit, Wherein the adjusted user desired illumination pattern is fiJrther based on an occupancy signal generated by theoccupancy sensor. Using the occupancy sensor, it is possible to leam how the user isoccupying his e.g. home, When he his home, etc., to leam a user occupancy behavior for theuser environment (e.g. the home/office space). The information may for example used incorrelation With the current day of the year, in a manner as indicated above and e. g. relatingto how much time the user spends at home over the year. In addition, information from theoccupancy sensor may over time also be used for automatically activating the luminaire(s),such as When the user arrives at home.

In addition to the discussion above, it should be understood that the expression“illumination pattem” should be interpreted broadly, i.e. not just relating to a brightnesslevel. In accordance to the present disclosure, it may also be possible to adjust lightparameters for the luminaire(s) in relation to e. g. color saturation, distribution/direction oflight, distribution of color of light illuminated by the luminaire(s), etc.

According to another aspect of the present invention there is provided acomputer-implemented method for operating a lighting system adapted for illuminating anarea, the lighting system comprising a controllable luminaire, a control unit connected andadapted to control the controllable luminaire to illuminate the area according to anillumination pattem, a manually operate control interface connected to the control unit, thecontrol interface adapted to generate a control signal indicative of a user desire to adjust theillumination pattem provided by the controllable luminaire, Wherein the method comprisesthe steps of deterrnining, using the control unit, a user desired illuminating pattem based aplurality of consecutively received control signals for adjusting the illumination pattem,adjusting, using the control unit, the user desired illumination pattem based on an adjustmentsignal from a clock module comprised With the control unit, the adjustment signal beingbased on current day of the year and a physical location of the control unit, and automaticallycontrolling, using the control unit, the controllable luminaire according to the adjusted userdesired illumination pattem independent on reception of further control signals from the useroperated control interface. This aspect of the invention provides similar advantages asdiscussed above in relation to the previous aspect of the invention.

According to a still further aspect of the present invention there is provided acomputer program product comprising a non-transitory computer readable medium havingstored thereon computer program means for operating a lighting system adapted forilluminating an area, the lighting system comprising a controllable luminaire, a control unit connected and adapted to control the controllable luminaire to illuminate the area according to an illumination pattern, a manually operate control interface connected to the control unit,the control interface adapted to generate a control signal indicative of a user desire to adjustthe illumination pattern provided by the controllable luminaire, wherein the computerprogram product comprises code for deterrnining, using the control unit, a user desiredilluminating pattern based a plurality of consecutively received control signals for adjustingthe illumination pattern, code for adjusting, using the control unit, the user desiredillumination pattern based on an adjustment signal from a clock module comprised with thecontrol unit, the adjustment signal being based on current day of the year and a physicallocation of the control unit, and code for automatically controlling, using the control unit, thecontrollable luminaires according to the adjusted user desired illumination pattemindependent on reception of further control signals from the user operated control interface.In addition, this aspect of the invention provides similar advantages as discussed above inrelation to the previous aspects of the invention.

A software executed by the server for operation in accordance to the inventionmay be stored on a computer readable medium, being any type of memory device, includingone of a removable nonvolatile random access memory, a hard disk drive, a floppy disk, aCD-ROM, a DVD-ROM, a USB memory, an SD memory card, or a similar computerreadable medium known in the art.

Further features of, and advantages with, the present invention will becomeapparent when studying the appended claims and the following description. The skilledaddressee realize that different features of the present invention may be combined to createembodiments other than those described in the following, without departing from the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The various aspects of the invention, including its particular features andadvantages, will be readily understood from the following detailed description and theaccompanying drawings, in which: Fig. l illustrates a lighting system according to a currently preferredembodiment of the present disclosure; Fig. 2 shows a conceptual installation of the lighting system illuminating adefined area, and Fig. 3 shows a flow chart of a method according to an embodiment of the present disclo sure.

DETAILED DESCRIPTION The present invention will now be described more fully hereinafter withreference to the accompanying drawings, in which currently preferred embodiments of theinvention are shown. This invention may, however, be embodied in many different forrns andshould not be construed as limited to the embodiments set forth herein; rather, theseembodiments are provided for thoroughness and completeness, and fully convey the scope ofthe invention to the skilled addressee. Like reference characters refer to like elementsthroughout.

Referring now to the drawings and to Fig. 1 in particular, there is depicted alighting system 100 according to a possible embodiment of the present disclosure. Thelighting system 100 comprises a control unit 102 and a plurality of luminaires 104, 106, 108.The control unit 102 is equipped with a wireless transceiver 110 configured to wirelesslytransmit control commands to the luminaires 104 and 106, where each of the luminaires 104and 106 are provided with a corresponding transceiver 110 adapted for receiving the lightingcommands from the control unit 102. The luminaire 108 is on the other hand electricallywired to the control unit 102 (where the control unit for example may be equipped withdriver circuitry) using electrical wiring 112. The lighting system 100 may of course comprisefurther or less luminaires. In addition, the functionality provided by the control unit 102 mayin some embodiments of the present disclo sure be distributed between the luminaires (e.g.) 1 04, 1 06.

The luminaires 104, 106, 108 are preferably individually controllable, but mayalso be arranged in different groups, where the lighting pattem provided by each luminairewithin the same group is adapted to be similar (possibly dependent on lighting technology).In a possible embodiment, the luminaires within the same group may also be allowed to becontrolled in dependence of each other. For example, a first of the luminaires in the group ofluminaires may be activated first, and in case “more light” is needed at some instance, aluminaire in the group of luminaires may be activated. Thus, there may be a dependencybetween the individually controllable luminaires 104, 106, 108.

The lighting system 100 further comprises a manually operate controlinterface, such as a rotary knob or a first button 114, being connected to the control unit 102.The first button 114 is used by the user for controlling the luminaires 104, 106, 108. The firstbutton 114 is arranged in electrical communication with the control unit 102; however, thelighting system 100 may also be provided with a second button 116, the second button 116 provided with a transceiver 110 and arranged for wireless communication with the control unit 102. The second button 116 may for example be arranged remotely from the control unit102. The first button 114 may for example be arranged in one location/section of the user°shome environment and the second button 116 in another, different, location/ section of theuser's home environment.

Furthermore, the lighting system 100 may be provided With a first 118 and asecond 120 sensor arranged in (electrical or Wireless) communication With the control unit102, and adapted for acquiring environmental data relating to e. g. the users homeenvironment. In the illustrated embodiment, the first sensor 118 is an occupancy sensoradapted to acquire information relating to the presence of a person Within the user's homeenvironment. The second sensor 112 is exemplified as a lighting sensor adapted to measureincident light, e. g. sunlight entering though a Window.

In addition, the luminaires 104, 106, 108 may include a mixture of e.g.halogen based or light emitting diode (LED) based luminaires. A halogen based luminairemay for example be configured to receive an unregulated electrical mains AC signal, e. g.rated at 230 or 110 V, Whereas an LED based luminaire may need a regulated DC drivesignal at e.g. 5V, 12 V, 18 V, etc.

Further to the above, control unit 102 may include a microprocessor,microcontroller, programmable digital signal processor or another programmable device. Thecontrol unit 102 may also, or instead, each include an application specific integrated circuit, aprogrammable gate array or programmable array logic, a programmable logic device, or adigital signal processor. Where the control unit 102 includes a programmable device such asthe microprocessor, microcontroller or programmable digital signal processor mentionedabove, the processor may further include computer executable code that controls operation ofthe programmable device. The Wireless transceiver 110 is preferably configured forBluetooth communication. HoWever, other Wireless implementations are possible, such asusing WLAN, CDMA, GSM, GPRS, 3G mobile communications, 4G mobilecommunications, Zig-Bee, infrared, or similar. The Wireless communication is preferablyperformed Within a radio spectrum comprising frequency bands Within the 2.4 GHz range,possibly also or instead at the 5 GHz radio frequency spectrum.

Tuming now to Fig 2, providing a conceptual installation and use of acorresponding lighting system 200 adapted for illuminating a defined area, such as the user'shome environment. In Fig. 2, a plan view is shoWn of a user°s home environment, including ahallWay section 202, a dining section 204, an entertainment and TV section 206 and an outdoor patio section 208. In each of the sections 202, 204, 206, 208 of the user°s home environment, there are arranged individually controlled luminaries. The hallWay section isprovided With a roof-mounted luminaire 210. The dining section 204 is provided With a first212 and a second 214 set of rail mounted lights. The entertainment and TV section 206 isprovided With a reading light 216, a rood mounted luminaire 218, as Well as a first 220 and asecond 222 luminaire provided adjacently on each side of a TV set 224. In addition, the patiosection 208 is provided With deck lights 226.

Furtherrnore, the lighting system 200 is provided With a first and a secondcontrol interface members to be manually operated by the user, such as the first 114 and thesecond 116 buttons and a first 228 and a second 230 occupancy sensor.

During operation of the lighting system 100/200, With fiarther reference to Fig.3, a user has installed the lighting system 200 Within his/her home environment. The useruses the buttons 114, 116 to control the luminaires 202, 212, 214, 216, 218, 220, 222 and226, for example in relation to color saturation, brightness, distribution of light, etc., Wherethe buttons 114, 116 generate control signals to be received, S 1, by the control unit 102. Thecontrol signals corresponds to an indication of a user desire in regards to hoW the individuallycontrollable luminaires are to illuminate the user”s home environment. In an initial phase ofusing the lighting system 100/200, the control signals Will directly control the luminaires 202,212, 214, 216, 218, 220, 222.

Over time, the control unit 102 receives a (large) plurality of control signalsfrom the buttons 114, 116. Once a suitable number of (above a predeterrnined threshold)control signals have been received, the control unit 102 starts to identify a user pattem andthereby determine (e. g. using machine leaming), S2, a user desired illumination pattem. Oncethe user desired illumination pattem has been deterrnined, the control unit 102 tries to adaptthe user desired illumination pattem based on a current day of the year and a physicallocation of the control unit 102. As mentioned above, the control unit 102 may be equippedWith an astronomic clock for calculating sunrise and sunset time at the physical location ofthe control unit 102, and possibly GPS circuitry for deterrnining the physical location of thecontrol unit. The adaptation of the illumination pattem may further take into account signalsfrom the occupancy sensors 228, 230 and a signal from a light sensor for measuring incidentlight, e. g. entering through a Window.

Eventually, once the user desired illumination pattem has been manipulated, itis possible for the control unit 102 to, Without direct interaction from the user, adjust, S3, theillumination pattem provided Within the users home environment and automatically, S4, control the emitted illumination pattem provided by the plurality of luminaires 201, 212, 214, 216, 218, 220, 222. The adjusted illumination patterns preferably mimic the user”s typicalbehavior within his/her user environment. That is, the user may for example initially(manually) activate the deck lights 226 once the sun has set, but only during the weekends.Accordingly, the lighting system 100/ 200 leams this behavior from the user, eventually takesover control, and automatically activates the deck lights 226 once the sun has set, but onlyduring the weekends.

Similarly, the lighting system 100/200 may, over time, learn that the usernorrnally activates the luminaries 220, 222 when sitting down to watch TV, during weekdaysand after approximately 8pm, but not during summer. Accordingly, the occupancy sensor 230may be used for deterrnining that the user is sitting down in the entertainment and TV section206, and base the automatic control of the luminaires 220, 222 on the day of the year, thetime of the day, and also possibly dependent on the amount of light entering through awindow within the entertainment and TV section 206 using the light sensor (not shown).Thus, not only does the illumination provided depend in the day of the year and the generalbehavior of the user, but also on how much extemal e.g. sun light is entering the user°senvironment.

In addition to the above, the illumination provided is dependent on thephysical location of the illumination system 100/200. That is, a user located far north of e. g.the northem hemisphere will typically have a different way of applying indoor lighting ascompared to a user located more south, e.g. closer to the equator. Accordingly, by means ofthe presented illumination system 100/200 this information may be taken into account whendeterrnining the user desired illuminating pattem as well as for adjusting the user desiredillumination pattem.

In summary, the present invention relates to a modular assembly forcontrolling a thereto-connected first electrical equipment, the assembly adapted to beinstalled in an electrical junction box, wherein the assembly comprises a first base modulecomprising a housing, a control unit arranged within the housing, and a connection blockadapted to electrically connect the electrical equipment with the control unit, and a firstcontrol module adapted to at least partly extending outside of the electrical junction box andfurther comprising a control member adapted to generate an electrical control signal, whereineach of the first base module and the first control module comprises a first interface tomechanically interconnect the first base module and the first control module, each of the firstbase module and the first control module comprises a second interface to electrically interconnect the first control module to the first base module, the first control module further comprises a frame portion to mechanically secure the assembly to the electrical junction box,the first base module comprises a wireless transceiver adapted for wireless communicationwith a corresponding second base module arranged remotely from the first base module, thecontrol unit is adapted to control the first electrical equipment and a second electricalequipment connected to the second base module based on the electrical control signal, andthe first base module is selected to generate a drive signal matching a driving preference forthe electrical equipment.

By means of the present disclosure, a modular assembly is provided where acontrol module provided with a desired control member, such as a rotary knob and a switch,is combined with base module selected to match a driving preference for the electricalequipment. Accordingly, different type of electrical equipment, such as different types oflight sources or luminaires applying different types of electrical control, may easily beoperated in a desired manner, using the appropriate control member.

The control functionality of the present disclo sure may be implemented usingexisting computer processors, or by a special purpose computer processor for an appropriatesystem, incorporated for this or another purpose, or by a hardwire system. Embodimentswithin the scope of the present disclo sure include program products comprising machine-readable medium for carrying or having machine-executable instructions or data structuresstored thereon. Such machine-readable media can be any available media that can beaccessed by a general purpose or special purpose computer or other machine with aprocessor. By way of example, such machine-readable media can comprise RAM, ROM,EPROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or othermagnetic storage devices, or any other medium which can be used to carry or store desiredprogram code in the form of machine-executable instructions or data structures and whichcan be accessed by a general purpose or special purpose computer or other machine with aprocessor. When information is transferred or provided over a network or anothercommunications connection (either hardwired, wireless, or a combination of hardwired orwireless) to a machine, the machine properly views the connection as a machine-readablemedium. Thus, any such connection is properly terrned a machine-readable medium.Combinations of the above are also included within the scope of machine-readable media.Machine-executable instructions include, for example, instructions and data, which cause ageneral-purpose computer, special purpose computer, or special purpose processing machines to perform a certain function or group of functions. 11 Although the figures may show a sequence the order of the steps may differfrom what is depicted. In addition, two or more steps may be performed concurrently or withpartial concurrence. Such Variation will depend on the software and hardware systems chosenand on designer choice. All such Variations are within the scope of the disclosure. Likewise,software implementations could be accomplished with standard programming techniqueswith rule-based lo gic and other lo gic to accomplish the Various connection steps, processingsteps, comparison steps and decision steps. Additionally, even though the invention has beendescribed with reference to specific exemplifying embodiments thereof, many differentalterations, modif1cations and the like will become apparent for those skilled in the art.

In addition, Variations to the disclosed embodiments can be understood andeffected by the skilled addressee in practicing the claimed inVention, from a study of thedrawings, the disclosure, and the appended claims. Furthermore, in the claims, the word"comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality.

Claims (15)

1. A lighting system for illuminating an area, comprising: - a controllable luminaire; - a control unit connected and adapted to control the controllable luminaire toilluminate the area according to an illumination pattern; - a manually operate control interface connected to the control unit, the controlinterface adapted to generate a control signal indicatiVe of a user desire to adjust theillumination pattern provided by the controllable luminaire, Wherein the control unit is conf1gured to: - deterrnine a user desired illuminating pattern based a plurality ofconsecutively received control signals for adjusting the illumination pattern, - adjust the user desired illumination pattern based on an adjustment signalfrom a clock module comprised With the control unit, the adjustment signal being based oncurrent day of the year and a physical location of the control unit, and - automatically control the controllable luminaire according to the adjusteduser desired illumination pattem independent on reception of further control signals from the user operated control interface.

2. The lighting system according to claim 1, Wherein the area is a defined indoorarea.

3. The lighting system according to any one of claims 1 and 2, Wherein the lighting system comprises a plurality of indiVidually controllable luminaires.

4. The lighting system according to any one of the preceding claims, Wherein theadjustment signal is further based on a sunrise and sunset time at the physical location of the control unit.

5. The lighting system according to any one of the preceding claims, Wherein the clock module comprises an astronomic clock. 13

6. The lighting system according to any one of the preceding claims, furthercomprising GPS circuitry connected to the control unit and adapted to deterrnine the physical location of the control unit.

7. The lighting system according to any one of the preceding claims, further comprising a light sensor for measuring incident light.

8. The lighting system according to any one of the preceding claims, furthercomprising an occupancy sensor connected to the control unit, Wherein the adjusted userdesired illumination pattern is further based on an occupancy signal generated by the OCCllpallCy SCIISOT.

9. The system according to any one of the preceding claims, Wherein the adjusteduser desired illumination pattern comprises setting for at least one of saturation, brightness,distribution of light, and distribution of color of light illuminated by the plurality of individually controllable luminaires.

10. The system according to claim 3, Wherein the control unit comprises a Wirelesstransceiver for communicating an illumination command to the plurality of individually controllable luminaires.

11. The system according to claim 10, Wherein the controllable luminaire isconnected to and controlled by a control circuitry, the control circuity comprising a Wireless transceiver adapted to receive the illumination command from the control unit.

12. The system according to any one of claims 10 and 11, Wherein the transceiver is configured for Bluetooth communication.

13. A computer-implemented method for operating a lighting system adapted forilluminating an area, the lighting system comprising: - a controllable luminaire; - a control unit connected and adapted to control the controllable luminaire to illuminate the area according to an illumination pattem; 14 - a manually operate control interface connected to the control unit, the controlinterface adapted to generate a control signal indicative of a user desire to adjust theillumination pattern provided by the controllable luminaire, Wherein the method comprises the steps of: - deterrnining, using the control unit, a user desired illuminating pattern baseda plurality of consecutively received control signals for adjusting the illumination pattern, - adjusting, using the control unit, the user desired illumination pattern basedon an adjustment signal from a clock module comprised With the control unit, the adjustmentsignal being based on current day of the year and a physical location of the control unit, and - automatically controlling, using the control unit, the controllable luminaireaccording to the adjusted user desired illumination pattem independent on reception of further control signals from the user operated control interface.

14. The method according to claim 13, Wherein the lighting system comprises a plurality of individually controllable luminaires.

15. A computer program product comprising a non-transitory computer readablemedium having stored thereon computer program means for operating a lighting systemadapted for illuminating an area, the lighting system comprising: - a controllable luminaire; - a control unit connected and adapted to control the controllable luminaire toilluminate the area according to an illumination pattem; - a manually operate control interface connected to the control unit, the controlinterface adapted to generate a control signal indicative of a user desire to adjust theillumination pattem provided by the controllable luminaire, Wherein the computer program product comprises: - code for deterrnining, using the control unit, a user desired illuminatingpattem based a plurality of consecutively received control signals for adjusting theillumination pattem, - code for adjusting, using the control unit, the user desired illuminationpattem based on an adjustment signal from a clock module comprised With the control unit,the adjustment signal being based on current day of the year and a physical location of the control unit, and - code for automatically controlling, using the control unit, the controllablelun1inaires according to the adjusted user desired illun1ination pattern independent on reception of fiarther control signals from the user operated control interface.