COMMISSIONING A LIGHTING SYSTEM

Description

FIELD OF THE INVENTION

[0001] The present invention relates to lighting system commissioning.BACKGROUND OF THE INVENTION

[0002] Networked lighting systems are used for commercial and other premises and may be managed from a central location to simplify maintenance and optimize energy consumption. The lighting system implements at least partially automated control by means of sensors such as daylight sensors and occupancy sensors.

[0003] The field of commissioning of lighting control systems to manage such intelligent lighting systems is becoming an increasingly critical step for a successful installation. Proper commissioning is essential for proper equipment operation, user acceptance and reaching target energy savings.

[0004] Once initially installed, a lighting system needs to be commissioned so as to associate switches and sensors with one or more luminaires. Typically, the commissioning is carried out by a manual process of association so that the luminaires can be operated individually or in groups by specific switches and sensors, with the overall network being managed by a central controller. As a result, the commissioning of a lighting network is currently a labour intensive and error prone process.

[0005] While in principle there are enormous advantages to be gained by the lighting systems incorporating intelligent luminaires, the cost and required resources for installation and proper commissioning of such complex lighting systems may form a bottleneck for involved decision makers, and may inhibit the take-up of the opportunities to be offered by intelligent lighting systems. With a properly commissioned system however, embedded and automatic lighting control systems can reduce lighting consumption by 20% to 40% in existing buildings and new constructions, as compared with conventional lighting systems.

[0006] There are also lighting systems which make use of wireless control switches and sensors. These have the advantage that they can easily be installed and relocated without needing to change the wiring infrastructure of a building. The sensors and switches communicate wirelessly with the lighting system controller. The sensors for example comprise light sensors, for automatically controlling the lighting based on ambient light levels, and occupancy sensors for automatically controlling the lighting based on presence detection.

[0007] The switches and sensors are generally battery-operated, so it is particularly important to reduce energy consumption to a minimum. Energy harvesting approaches have been proposed, for example the physical interaction with a switch may be used to harvest sufficient energy for performing the required wireless communication of the switch command to the central control system. For sensors which need to be in a monitoring mode continuously, this is less of an option.

[0008] One feature which would assist in the commissioning process would be the ability to communicate with the sensors or switches using a remote control signal. However, this requires the sensor or switch to be in a standby mode ready to receive such remote control signals, and this represents an undesired energy drain.

[0009] This communication using a remote control signal would be part of a manual commissioning process. Even if a system has an auto-commissioning functionality, a manual override is desired to be able to correct for errors during an auto-commissioning procedure.

[0010] US 2016 / 095188 A1 discloses systems and methods for adjusting environmental conditions within a physical structure comprising a plurality of linked commissioned units. One or more occupancy sensors produce data indicating that a designated zone has transitioned from an unoccupied state to an occupied state. A first one or more luminaires associated with a first one of the plurality of linked commissioned units, produces a background level of illumination within a predetermined reaction period following the production of the sensor data. The first one of the plurality of linked commissioned units transmits data indicative of the state change of the designated zone, and at least a second one of the plurality of linked commissioned units receives the data indicative of the state change, and causes at least a second one or more luminaires to alter illumination.

[0011] US 2015 / 0008831 A1 discloses a lighting fixture having a light source, a light sensor, a communication interface, and circuitry. In addition to controlling the light source, the circuitry is adapted to monitor for a light signal provided from a handheld device via the light sensor; upon receiving the light signal, measure a signal level associated with the light signal; and effect transmission of the signal level to the handheld device via the communication interface. In one embodiment, the circuitry is further configured to receive an instruction to monitor for the light signal from the handheld device via the communication interface such that the circuitry begins monitoring for the light signal upon receiving the instruction.SUMMARY OF THE INVENTION

[0012] The invention is defined by a battery-operated lighting control component as defined in claim 1, and a method of commissioning a lighting system as defined in claim 8. Further preferred embodiments are defined in the dependent claims.

[0013] According to an aspect, there is provided a lighting control component for forming part of a lighting system, comprising: a battery for providing power to the lighting control component; a remote control signal receiver for receiving a commissioning signal; and a disabling system for enabling and disabling the remote control signal receiver, adapted such that the remote control signal receiver is enabled when a commissioning process of the lighting system is expected and disabled when a commissioning process of the lighting system is not expected. The latter is achieved in at least one of the following ways: (i) the disabling system is adapted to enable the remote control signal receiver for a fixed duration after initial provision of power to the lighting control component, and then to disable the remote control signal receiver, or (ii) the lighting control component further comprises an occupancy sensor unit having an occupancy sensor element, and the disabling system is adapted to enable the remote control signal receiver when the occupancy sensor element detects occupancy.

[0014] The commissioning process is "expected" because the component is first being used, or it is "expected" because a user is in the vicinity. It may also be "expected" in the sense that it is known to be taking place because the component has been set to a commission mode, or in the sense that at all other times it is not expected.

[0015] The lighting control components are intended to form a lighting system by forming a network with lighting elements. The control component is then part of an automated control system for the lighting system. The control component for example may comprise a light sensor or a presence detection sensor or a switch.

[0016] The disabled mode of the remote control signal receiver is a mode in which it consumes no power (or only consumes power through energy leakage and not through active operation of any components).

[0017] The remote control signal receiver is for example for an infrared remote control signal, such as according to the RC5 protocol. It means the commissioning process is made easier, as physical manual interaction with the control component is not needed during commissioning of the light system. Instead, remote control signals may be used to create the desired relationships between the different components of the system as well as providing the desired settings of the components. However, after installation, the remote control capability no longer consumes power at the component. The disabling may for example be a hardware disable function.

[0018] When the disabling system is adapted to enable the remote control signal receiver for a fixed duration after initial provision of power to the component, and then to disable the remote control signal receiver, the commissioning is expected to take place within a fixed time after installing and powering the component, for example within a number of minutes, hours or days.

[0019] The component may then further comprise a manual enable switch for manually enabling the remote control signal receiver. In this way, the system may be reconfigured even if the power supply is not removed from the component, by providing a manual reset capability.

[0020] When the lighting control component further comprises an occupancy sensor unit having an occupancy sensor element, and the disabling system is adapted to enable the remote control signal receiver when the occupancy sensor element detects occupancy and disable the remote control signal receiver when the occupancy sensor element does not detect occupancy, commissioning can only take place when an occupant is present - namely the installer of the system or subsequent servicing personnel. The occupancy sensor unit may be a PIR sensor.

[0021] Next to an occupancy sensor unit, the lighting control component may also comprise a light sensor unit or a switch unit.

[0022] The component for example further comprises a wireless communications system for communicating wirelessly with a lighting system controller. It thus forms part of a wireless network of devices under the control of the lighting system controller.

[0023] Another aspect also provides a lighting system comprising: a set of luminaires; a set of lighting control components, each as defined above; and a lighting system controller for controlling the luminaires based on a commissioned configuration of the lighting system.

[0024] Examples in accordance with another aspect provide a method of commissioning a lighting system which comprises a set of luminaires and a set of battery-operated lighting control components, the method comprising: enabling a remote control receiver function of the battery-operated lighting control components; subsequently performing commissioning of the lighting system by communicating with the battery-operated lighting control components using the remote control receiver function; and subsequently disabling the remote control receiver function of the battery-operated lighting control components.

[0025] In this method, the remote control receiver function is enabled for a predetermined time from initial powering of the battery-operated lighting control components, and / or the battery-operated lighting control components comprise occupancy sensor elements, wherein the enabling is performed when the occupancy sensor elements detect occupancy.

[0026] In this method, the remote control receiver function is disabled after the commissioning process. The remote control receiver function may be enabled for a predetermined time from initial powering of the battery-operated lighting control components, during which predetermined time the commissioning takes place.

[0027] When the battery-operated lighting control components comprise occupancy sensor elements, the enabling for a component may be performed when the occupancy sensor element detects occupancy.BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Examples of the invention will now be described in detail with reference to the accompanying drawings, in which: Figure 1 shows a lighting system; Figure 2 shows in general form the components which make up the overall control components used within the lighting system; and Figure 3 shows a commissioning method for a lighting system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The invention provides a lighting system and a lighting system control component for such a system. The components are battery-operated, and include a remote control signal receiver for receiving commands and configurations during commissioning. A disabling system is provided for enabling and disabling the remote control signal receiver, such that the remote control signal receiver is enabled when a commissioning process of the lighting system is expected and disabled when a commissioning process of the lighting system is not expected. This reduces the power consumption of the component after the commissioning is complete but provides ease of use during commissioning.

[0030] Figure 1 shows a lighting system 10 comprising a set of luminaires 12 and a set of lighting control components. The lighting control components comprise switches 14, passive infrared (PIR) occupancy sensors 16 and light sensors 18. These three functions are shown implemented by separate components, but occupancy sensing and light sensing may for example be performed in a single device.

[0031] There may be other networked components such as gateways and a building management system.

[0032] A lighting system controller controls the luminaires 12 based on a commissioned configuration of the lighting system. For example, a group of luminaires may be associated with each particular PIR sensor 16 so that they come on when occupancy is detected. Different luminaires may also be associated with different light sensors 18 for automatic lighting control, and the switches may be configured to control different sets of luminaires.

[0033] The known commissioning process is thus typically a manual operation by which a sensor is linked to the luminaire group.

[0034] The system may control dimming settings as well as on-off control. The commissioning may also set other parameters such as time delay values, and trigger levels for the different sensors.

[0035] The controller 20 is wired to the luminaires (since they need to be wired to the infrastructure of the building in any case), but the other components are wireless components.

[0036] They communicate with the controller 20 over a wireless communication channel. The luminaires may instead also communicate wirelessly with the central controller 20. Within the system, there may be some wired components and some which connect to the controller wirelessly. This invention relates in particular to wireless control components.

[0037] The use of wireless control components enables free placement of sensors and switches without the need to adapt the wiring infrastructure. Thus, it facilitates initial installation and also system reconfiguration, for example if the layout of a space has been changed.

[0038] A quicker and hence less costly commissioning may be achieved by providing the components with a wireless control interface to the installer, such as an infrared RC5 interface.

[0039] However, while on standby and therefore able to receive remote control signals, the circuitry consumes power, which therefore shortens the time between maintenance operations of the wireless components.

[0040] The invention provides a battery-operated lighting control component for use in the lighting system, one example of which is shown in Figure 2.

[0041] The component comprises a control part 30 which depends on the function being implemented. For example, the control part 30 may comprise a light sensor, or an occupancy sensor or a manually operated control switch. Thus, the general architecture shown in Figure 2 is suitable for any of the different types of component.

[0042] The control part 30 communicates with a local controller 32 which operates a wireless transceiver 34 for communicating with the central system controller 20. The local controller 32 also receives signals from a remote control (infrared) signal receiver 36, but there is also a disabling system 38 for enabling and disabling the remote control signal receiver 36.

[0043] In the disabled state, the receiver 36 is powered down so does not consume any power, but also is unable to be awakened by an incident remote control signal.

[0044] Figure 2 shows the battery 40 which is the power supply for the component.

[0045] The component is also associated with a remote control device 42 which may be shared between multiple components, by having a short range communication distance.

[0046] The remote control signal receiver 36 is enabled when a commissioning process of the lighting system is expected and disabled when a commissioning process of the lighting system is not expected.

[0047] The commissioning process is for example expected when power is first applied to the component, i.e. when the component is being installed.

[0048] The commission process, using such a remote control, may then comprise using the remote control to unlock the network and open the network.

[0049] The sensor is then controlled to join the network,

[0050] The remote control is then used to close the network and lock the network.

[0051] Unlocking / locking the network and opening / closing the network may be performed by a push button on the remote control.

[0052] A button on the sensor to be added may be used to perform the joining function (so-called "button-linking").

[0053] Alternatively, the remote control signal sent to the sensor may trigger it to execute the commissioning step (i.e. joining the network) using the communication channel between the controller 20 and the transceiver 34. This for example involves the sensor transmitting a MAC address to the controller 20. The wireless protocol for the main control communication channel for example comprises ZigBee, although other wireless communications protocols may be used, such as BlueTooth.

[0054] In this way, the commissioning does not require any manual interaction with the sensor.

[0055] As mentioned above, the commissioning process is for example expected when power is first applied to the component. Thus, in a first example the disabling system 38 allows remote control signals to be processed during an initial time period such as a number of days. This may correspond to the maximum expected installation time, for example 7 days.

[0056] The commissioning process is made easier, as physical manual interaction with the component is not needed. Instead, remote control signals may be used to create the desired relationships between the different components of the system as well as providing the desired settings of the components.

[0057] However, after installation and at the end of the predetermined time period, the remote control capability is disabled so no longer consumes power at the component.

[0058] The disabling may for example be a hardware disable function, for example a transistor which is in series with the power line to the receiver, and which thereby cuts off the power supply to the receiver 36.

[0059] It may be desired to reconfigure the system some time after the initial commissioning. This may be achieved by removing the battery 42 so that a reset is forced on the system. Alternatively, the component may further comprise a manual enable switch 44 for manually enabling the remote control signal receiver once more for the predetermined time period, without having to remove the battery.

[0060] In a second example, specifically for an occupancy sensor component 16, the disabling system enables the remote control signal receiver when the occupancy sensor element of the component detects occupancy. A commissioning person will be present during the commissioning process, so that the remote control function can be disabled when there is no detected presence.

[0061] Figure 3 shows a method of commissioning the lighting system.

[0062] In step 50, a remote control receiver function of battery-operated lighting control components is enabled. This enabling may be an initial default factory setting of the components.

[0063] In step 52 there is commissioning of the lighting system by communicating with the battery-operated lighting control components of the system using the remote control receiver function.

[0064] After the commissioning, the remote control receiver function of the battery-operated lighting control components is disabled in step 54. As explained above, this may be based on a time-out or it may be because the person commissioning the system is no longer present and hence detected by a PIR sensor.

[0065] Two examples have been given above of how it may be determined that the commissioning process is expected. Another option is to enable the remote control signal processing until a manual interrupt switch is operated. For example, after initial commissioning, a push button may simply be pressed manually, in order to disable the remote control functionality. The remote control function may first need to be enabled by a manual selection, or it may be set as initially enabled.

[0066] Thus there are various ways to implement the desired functionality, which in general provides a time period of enabled remote control functionality, and a time period of disabled remote control functionality, with the enable period intended for a commissioning process.

[0067] 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. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A battery-operated lighting control component (14, 16, 18) comprising: a battery (40) for providing power to the lighting control component; and a remote control signal receiver (36) for receiving a commissioning signal; characterized in that the battery-operated lighting control component further comprises: a disabling system (38) for enabling and disabling the remote control signal receiver (36) and adapted such that the remote control signal receiver (36) is enabled when a commissioning process of the lighting system is expected and disabled when a commissioning process of the lighting system is not expected, wherein a commission process is expected: when the lighting control component (14, 16, 18) is first being used, whereby the disabling system (38) is adapted to enable the remote control signal receiver (36) for a fixed duration after initial provision of power to the lighting control component, and then to disable the remote control signal receiver (36), and / or when a user is in the vicinity of the battery-operated lighting control component (14, 16, 18), wherein the lighting control component further comprises an occupancy sensor unit (16) having an occupancy sensor element, whereby the disabling system (38) is adapted to enable the remote control signal receiver (36) when the occupancy sensor element detects occupancy and disable the remote control signal receiver (36) when the occupancy sensor element does not detect occupancy.

2. The battery-operated lighting control component (14, 16, 18) as claimed in claim 1, further comprising a manual enable switch (44) for manually enabling the remote control signal receiver.

3. The battery-operated lighting control component (14, 16, 18) as claimed in any preceding claim, wherein the occupancy sensor unit (16) is a PIR sensor.

4. The battery-operated lighting control component (14, 16, 18) as claimed in any preceding claim, wherein the remote control signal receiver (36) comprises an infrared receiver, for example using the RC5 protocol.

5. The battery-operated lighting control component (14, 16, 18) as claimed in any preceding claim, further comprising a wireless communications system (34) for communicating wirelessly with a lighting system controller (20).

6. The battery-operated lighting control component (14, 16, 18) as claimed in any preceding claim, wherein the lighting control component further comprises a light sensor unit (18) or a switch unit (14).

7. A lighting system comprising: a set of luminaires (12); a set of battery-operated lighting control components (14, 16, 18), each as claimed in any preceding claim; and a lighting system controller (20) for controlling the luminaires based on a commissioned configuration of the lighting system.

8. A method of commissioning a lighting system which comprises a set of luminaires and a set of battery-operated lighting control components, the method comprising: enabling (50) a remote control receiver function of the battery-operated lighting control components; subsequently (52) performing commissioning of the lighting system by communicating with the battery-operated lighting control components using the remote control receiver function; and subsequently (54) disabling the remote control receiver function of the battery-operated lighting control components, wherein the enabling (50) is performed when a commissioning process of the lighting system is expected and the disabling (54) is performed when a commissioning process is not expected, wherein the commissioning process is expected: when the battery-operated lighting control components are first being used, whereby the remote control receiver function is enabled for a predetermined time from initial powering of the battery-operated lighting control components, and / or when a user is in the vicinity of the battery-operated lighting control components, wherein the battery-operated lighting control components comprise occupancy sensor elements, whereby enabling is performed when the occupancy sensor elements detect occupancy and wherein the disabling is performed when the occupancy sensor element does not detect occupancy.