Abstract: A method comprising: obtaining a respective measurement of a beacon signal transmitted wirelessly between the mobile device and each of a plurality of the reference nodes; for each of a plurality of different reference locations within the environment, distinct from the reference nodes, obtaining a corresponding measurement of a test signal previously transmitted or modelled to have been transmitted wirelessly between the reference location and each of the plurality of reference nodes; for each of the reference locations, determining for each of said plurality of beacon nodes a difference between the respective measurement of the beacon signal and the measurement of the test signal; for each of the reference locations, determining a value of a measure of statistical spread in these differences; and estimating the location of the mobile device in dependence on a comparison of the values of the measure of statistical spread determined for the different reference locations.

Abstract: A verification device to detect malfunction in a connected lighting system, the connected lighting system comprising multiple luminaires and multiple occupancy sensors, the verification device comprising: —an input interface (301) arranged to connect to a database and obtain the sensor data obtained from the multiple occupancy sensors, —an aggregation unit (310) arranged to compute occupancy values which are indicative of occupancy over a specified time period at different hierarchical levels by applying a statistical measure, and —a processing unit (320) arranged to compare an occupancy value at a lower hierarchical level with an occupancy value at a higher hierarchical level, finding deviations that indicate a malfunction in the connected lighting system and producing a signal to communicate the malfunction.

Abstract: A system for controlling a motor with a plurality of motor control functions including at least a current control loop and a velocity control loop. The system includes one of a hybrid Digital Signal Processor (DSP)-Field Programmable Gate Array (FPGA) architecture having an integral DSP and an integral FPGA or a System on a Chip (SoC) architecture having a Microcontroller Sub-System (MSS) and an FPGA fabric. The current control loop function is assigned to the integral FPGA for the hybrid DSP-FPGA architecture, and at least the velocity control loop function is assigned to the DSP the hybrid DSP-FPGA architecture. Alternatively, the current control loop function is assigned the FPGA fabric of the SoC architecture, and at least the velocity control loop function is assigned to the MSS of the SoC architecture.

Abstract: A method for identifying sensor units (3) at fault in a lighting system (1) performed using three or more sensor units (3), each respective one of the sensor units (3) comprising a respective sensor (116) configured to generate sensor data, the method comprising at an external processing apparatus (20) external to the sensor units (3): receiving from each of the sensor units (3) the sensor data; generating correlation parameters from the sensor data for selected pairs of neighbouring sensor units (3); and monitoring the correlation parameters to determine a sensor unit (3) at fault.

Abstract: In one aspect, a mobile device is located using a signal sent out from the mobile device to nodes of a location network, and the mobile device also sends a tracking preference associated with the signal. This specifies whether a location network is permitted to use the signal to determine the mobile's location, and/or whether a provider of a location related service associated with a location network is permitted to make use of the location. In embodiments the preference may be tagged with the ID of a particular provider. In another aspect, the localization is based on measurements taken by a mobile terminal of signals sent from the nodes, and the nodes also send out an identifier with the signal identifying a provider of a location related service associated with the network. The mobile device can then use this identifier to determine who to share its measurements or location with.

Abstract: A system (200) for protecting location information has beacons (240), a provider server (220) for providing at least one location based service, a location server (230) and mobile devices (210). The mobile device has a location engine (211) for controlling the location information and a location based application (212) for using the location information. The provider server generates unique data and authorizes the location based application, and subsequently provides location based services in dependence on an encrypted location. The location server determines the location based on a property of the radiation and encrypts the location. The location engine obtains a verification of customer data of the location based application, which indicates that use rights allow transfer of the location information to the location based application, and upon obtaining the verification transfers the encrypted location to the location based application.

Abstract: A method of performing analytics relating to energy management or space utilization in an environment of a lighting system, the method comprising: accessing a database of data reported by the devices, the data comprising values of one or more types of data reported by each respective one of the devices; depending on whether the analytics are to characterize location, device, or both, selecting between: i) using a designation of the location but not the ID as a selection criterion, ii) using a designation of the ID but not the location as a selection criterion, iii) using a designation of both the location and ID as a selection criterion, retrieving the values of data types reported by devices with the specified designation, and performing at least part of the analytics based thereon; and adapting one or more features of the environment and/or lighting system based on the performed analytics.

Abstract: Method of detecting a change in a lighting system comprising a plurality of devices each comprising a luminaire and/or a sensor, wherein each respective one of the devices has a respective location recorded in a commissioning database in association with data reported by the respective device; the method comprising: identifying a subset of said devices located within a predetermined spatial demarcation; automatically monitoring a respective value of a characteristic of each of the devices in said subset, thereby forming a data cluster comprising the values of said characteristic for the subset; automatically detecting that one of one of the devices in the subset has been moved by detecting a shift in one of the cluster values relative to the rest of the values in the data cluster; and in response to said detection, automatically outputting an indication that the commissioning database is likely to require updating to reflect said change.

Abstract: A controller for controlling a battery-powered luminaire in a lighting network comprises: a network interface for communicating with the lighting network; and control logic for controlling at least one illumination source of the battery-powered luminaire; wherein the control logic is configured to: detect a failure of at least one mains-powered luminaire in the lighting network, determine that the mains-powered luminaire was emitting or had been instructed to emit a visual alert when the failure occurred, and control the at least one illumination source of the battery-powered luminaire to emit a version of that visual alert in response, the failure being detected based on a loss of communication, within the lighting network, with the mains-powered luminaire.

Abstract: A localization system comprising a plurality of wireless reference nodes for detecting a location of a mobile device within an environment. Each node transmits localization beacon signals to be detected by the mobile device, and/or listens for localization beacon signals from the mobile device. Further, the system also provides or contributes to providing another utility into the environment (e.g. each node being a luminaire); and transmits and/or listens for control-related signals, other than localization beacon signals, related to controlling the provision of said utility, the control related signals being communicated on a same or overlapping frequency band as the localization beacon signals, one or more controllers are configured to control the transmission of and/or listening for the control-related signals to be time-multiplexed into different time slots than the transmission and/or listening for the localization beacon signals, between the time-slots of the control-related signals.

Abstract: A sensor such as a presence sensor for use in a lighting system or other system that adapts to information from a plurality of active presence sensors. If transmissions from the active sensors are uncoordinated, the overall detection performance may be adversely impacted (e.g. due to potential cross-interference), which may make sensing over the detection coverage area defined by a single presence sensor (or the like) become unreliable. The disclosure presents protocols for coordinating transmissions in active sensing systems. The invention may be applied to various active modalities (e.g. ultrasound, RF), for example that find applications in indoor and outdoor lighting controls.

Abstract: A method of testing a sensor unit which detects, locally at the sensor unit, whether a person appears in the images it captures. The method comprises causing a light-emitting device (e.g. screen of a user terminal) to emit a test pattern toward the sensor unit to be captured over a series of images, the test pattern comprising a spatio-temporal pattern of light simulating presence of a predetermined number of people. The method further comprises, at a processing apparatus external to the sensor unit, receiving one or more presence detection reports from the sensor unit indicating an apparent people count detected using the sensor unit when subject to the test pattern. The apparent people count is then compared with the predetermined number of people simulated by the test pattern. Based on this comparison, it is determining whether the sensor unit is functioning correctly.

Abstract: Devices (10) comprise target detectors (11) for detecting presences of targets in first areas (1) and transmitters (12) for in response to detected presences transmitting multicast messages to controllers (20) and lamps (21-24) in wireless networked lighting systems. Such multicast messages increase reliabilities of the systems. The multicast messages switch on the lamps (21-24). Preferably, the multicast messages are only transmitted in case relatively small amounts of light are detected in second areas (2). In case relatively large amounts of light are detected in the second areas (2), unicast messages are in response to detected presences transmitted from the devices (10) to the controllers (20) that in response control the lamps (21-24) to be switched on. The first and second areas (1, 2) may be at least partly overlapping areas.

Abstract: Aspects of the disclosure provide methods and an electronic device for wireless communication. A method includes transmitting, by a first transceiver, control packets via a first wireless communication channel using a first radio access technology. The method includes determining, by processing circuitry, a first parameter indicating an interval between transmissions of the control packets. Further, the method includes determining, based on the first parameter, a size limit for packets to be received by a second transceiver that is configured to receive the packets via a second wireless communication channel using a second radio access technology. The method includes transmitting, by the second transceiver, information indicating the size limit over the second channel so that sizes of the packets sent by the second radio access technology are such that the packets are received by the second transceiver in a time period within the interval between the transmissions of the control packets.

Abstract: A method of augmenting an illumination perception by one or more wearers of respective head-mountable computing devices each including at least one transparent display module is disclosed. The method comprises determining a desired light condition for said wearer in a space, determining an actual light condition for said wearer in said space; and displaying a semi-transparent image on the at least one transparent display module to filter the light passing through the at least one display module in case the actual light condition differs from the desired light condition. In embodiments, the user preferences may be used to perform a global optimization of the light output by one or more (distributed) light sources of a lighting system. Computer program products comprising computer program code for implementing such a method when executed on a suitable processor, a head-mountable computing device and a lighting system are also disclosed.

Abstract: A verification device to detect malfunction in a connected lighting system, the connected lighting system comprising multiple luminaires and multiple occupancy sensors, the verification device comprising: an input interface (301) arranged to connect to a database and obtain the sensor data obtained from the multiple occupancy sensors, an aggregation unit (310) arranged to compute occupancy values which are indicative of occupancy over a specified time period at different hierarchical levels by applying a statistical measure, and a processing unit (320) arranged to compare an occupancy value at a lower hierarchical level with an occupancy value at a higher hierarchical level, finding deviations that indicate a malfunction in the connected lighting system and producing a signal to communicate the malfunction.

Abstract: The invention relates to a monitoring system (13) for monitoring electrical devices (A, B, C, D, K) like luminaires. An assignments providing unit (7) provides assignments between the electrical devices and behavior classes defining expected behaviors, wherein a deviation determination unit (9) determines a deviation a) between a monitored behavior of an electrical device assigned to a behavior class and an expected behavior defined by a behavior class and/or b) between a monitored behavior of an electrical device and a monitored behavior of another electrical device, wherein an output unit (10) provides an output depending on the determined deviation. The deviation can be indicative of a commissioning error, i.e., for instance, of an assignment of an electrical device to a wrong room within a building. The monitoring system can therefore allow for an automatic detection of commissioning errors in a building which may have thousands of electrical devices.

Abstract: In one aspect, a mobile device is located using a signal sent out from the mobile device to nodes of a location network, and the mobile device also sends a tracking preference associated with the signal. This specifies whether a location network is permitted to use the signal to determine the mobile's location, and/or whether a provider of a location related service associated with a location network is permitted to make use of the location. In embodiments the preference may be tagged with the ID of a particular provider. In another aspect, the localization is based on measurements taken by a mobile terminal of signals sent from the nodes, and the nodes also send out an identifier with the signal identifying a provider of a location related service associated with the network. The mobile device can then use this identifier to determine who to share its measurements or location with.

Abstract: According to the invention, a PIR sensor system (100) comprises a first PIR sensor (1) associated with a first sensing region (11) and a second PIR sensor (2) associated with a second sensing region (12). The first and second sensing regions partially overlap and are divided into detection cells (46a-46f) and (45a-45d). Each detection cell is represented by predetermined characteristics of first and second output signals, which signals are based on input signals from first and second sensing elements (4-7) of each PIR sensor. Thereby different detection cells are encoded by a certain combination of signal characteristics (amplitude and sign) of the first and second output signals. Further, the PIR sensor system comprises a processing unit (15) configured to associate the characteristics of the first and second output signals with one of the detection cells for determining in which of the detection cells a heat source is positioned.

Abstract: Technologies are described herein for providing contextually-aware location sharing services for computing devices. In some configurations, the techniques disclosed herein can involve a number of computing devices configured to select and utilize location data from one or more resources based on one or more factors. An analysis of contextual data including, but not limited to, the capabilities of the individual devices, a status of one or more components, or the availability or cost of data, allows individual devices to dynamically select and utilize location data or a source of location data to accommodate a range of scenarios. Techniques disclosed herein can also detect the presence of a changed scenario and take one or more actions based, at least in part, on data defining the changed scenario.