Philips Lighting Holding B.v.

Signify Holding B.v.

Petrus Antonius Verbeek

Jurgen Mario Vangeel

Roger Peter Anna Delnoij

Michel Albertus Theodorus Klein Swormink

Johannes Martinus Maria Hensing

Johannes Jozef Wilhelmus Kalfs

Michiel Adriaanszoon Klompenhouwer

Biju Kumar Sreedharan Nair

Cornelis Antonius Verbakel

Marek Zbigniew Szczerba

Methods for distinguishing devices () receive position information from position sensors () defining positions of the devices (), and receive direction information from direction sensors () defining directions of the devices (), and analyze the direction information. The devices () can be distinguished from each other, even in case they are located closer to each other than the accuracies of their position sensors (). First devices () comprise first drivers () for driving first loads (), and first controllers () for controlling the first drivers () and for receiving first position signals from first position sensors () and for receiving first direction signals from first direction sensors (). The first direction sensors () may comprise first light detectors (). Apparatuses () may commission the devices () and may comprise receivers () for receiving the position information and the direction information and analyzers () for analyzing the direction information to distinguish the devices ().

Distinguishing devices having positions and directions

A signal processing module for use with a receiver for receiving echoes of an emitted signal. The signal processing module comprises sensing logic for sensing presence of a being or object in a space using echoes of the signal as reflected from the being or object, wherein the echoes are received with an associated frequency band. The signal processing module further comprises control logic for detecting disturbance having potential to compromise said sensing, wherein the signal processing module is configured to detect this disturbance by listening for an unwanted signal in a region of the spectrum outside the frequency band of the echoes, and to adapt the sensing in dependence on the detected disturbance.

Mitigating disturbance in sensing

The present invention relates to a method for controlling a lighting device in a daylight harvesting system. When a user tampers with a sensor, in order to decrease the light level light level measured and therefore increase the light intensity of the lighting device, the tampering is detected. Based on this tamper detection the light intensity of the lighting device is controlled based on a set value (e.g. 70% dimming).

Anti-tampering daylight harvesting system

An apparatus comprises a first light sensor configured with a first field of view; and a second light sensor configured with a second, narrower field of view contained within the first field of view. The first and second light sensors may be arranged to detect light reflected from an illuminated surface, wherein the first and second field of view encompass light from an electric lighting device reflected from said surface and additional light reflected from said surface, e.g. natural light; but the second light sensor is concentrated on a region on said surface so as to exclude glare from objects outside said region, whereas the first field of view extends beyond said region. An illumination level of the environment in which the apparatus is installed may be adjusted to compensate for a change in the additional light based on information distinguishing between the two sensors.

Illumination sensor for distinguishing between different contributions to a sensed light level

A controller comprising: presence detection logic, calibration logic, and an input for receiving a reading from a light sensor representing a sensed light level. The presence detection logic is for detecting presence events based on a presence sensor, and is configured to indicate a set-point to operate at least one lighting device in dependence on a positive detection of presence. The calibration logic is for performing a calibration operation, which is performed by causing a light output of the lighting device to change between a first, lower level and a second, higher level, and by and calibrating the set-point based on the reading from the light sensor under influence of the first and second levels. The calibration logic is configured to trigger this calibration operation in response to the positive detection of presence.

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Deurne, Netherlands

Petrus Antonius Verbeek