Helvar

According to an embodiment, a sensor apparatus (110-k) for monitoring a predefined first environmental characteristics in a location of a space is provided, the sensor apparatus (110-k) comprising: a communication portion (111-k) for wired and/or wireless communication with one or more other apparatuses; a sensing element (112-k) arranged to generate an electrical measurement signal that is descriptive of the first environmental characteristic; a control portion (113-k) arranged to derive, based on the electrical measurement signal, local sensor indications that are descriptive of the first environmental characteristic and operate the communication portion (111-k) to transmit the local sensor indications to the one or more other apparatuses; and a supervising portion (114-k) arranged to respond to an occurrence of a predefined condition that is associated with compromised operation of the sensor apparatus (110-k) by carrying out at least one of the following: adjust at least one aspect of operation of the control portion (113-k) in relation the deriving and/or transmitting the local sensor indications, or operate the communication portion (111-k) to transmit, to one or more other sensor apparatuses operating in said space, a substitute request that pertains to deriving, at a respective other sensor apparatus on behalf of the sensor apparatus (110-k), substitute sensor indications that are descriptive of the first environmental characteristic to replace at least part of the local sensor indications.

A management system for controlling luminaires (109-112) comprises a presence sensor (101, 102) for producing occupancy data indicative of presence of an object on an area illuminated by the luminaires. The management system comprises a control system (106) for controlling the luminaires based on the occupancy data, and a signaling device (107) for generating a signal noticeable by an object on the area. The control system deactivates or dims down the luminaires when the occupancy data indicates that the area has been unoccupied for a delay time, and to control the signaling device to generate the signal when the occupancy data indicates that the area has become unoccupied. If the area is falsely detected to be unoccupied, the signal typically makes an object to react and the presence of the object can be detected based on the reaction, and unwanted deactivation or dimming down of the luminaires can be avoided.

A lighting control system comprises at least one imaging device (101) for producing at least one electronic image and at least one presence sensor (115a-115d) for detecting occupancy. The lighting control system comprises a controller (102) configured to run an artificial intelligence process to identify a type of an object presented by the electronic image and to control, when occupancy is detected, the lighting system based on the type identified by the artificial intelligence process. The identification of the type of the object makes it possible to control the lighting system in accordance with requirements specific to the identified type. For example, different lighting control can be used for an office worker who stays typically hours in an office than for a guard who walks through the office in few minutes.

An arrangement comprises a communications unit (501) configured to receive and transmit data, a processor unit (502) coupled to said communications unit (501), and one or more data storages (503) to store received use data indicative of accumulated use of said plurality of node devices. The processor unit (502) is configured to estimate (1304), based on said received use data, remaining service lives of at least a subset of said plurality of node devices, and to generate (1306), based on said estimated remaining service lives, at least one compensation rule determining updated node device operation. The compensation rule aims at lowering power consumption during subsequent use of at least a first one of said plurality of node devices for which the respective estimated remaining service life was shorter than average.

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According to another example embodiment, a method (200) in a lighting system (100) comprising a lighting system control entity (140, 150) and a plurality of luminaires (120) that are wirelessly coupled to the lighting system control entity (140, 150) is provided, wherein the method (200) comprises, in a luminaire (120-k) of the plurality of luminaires (120), controlling (202) light output of the respective luminaire (120-k) in accordance with a preprogrammed lighting control logic that defines switching on the light output in response to detecting occupancy at the respective luminaire (120-k), transmitting (204a) status indications to and receiving (204b) status indications from other ones of the plurality of luminaires (120), wherein each status indication is descriptive of an occurrence of an event pertaining to a luminaire transmitting the respective status indication, deriving (206) relationship data including one or more relationship strength values, wherein each relationship strength value pertains to a particular other luminaire (120-p) of said plurality of luminaires (120) and is descriptive of an extent of regularity at which reception of a status indication that indicates an occurrence of a given event pertaining to the particular other luminaire (120-p) is followed by detecting occupancy at the respective luminaire (120-k), and transmitting (208) the relationship data to the lighting system control entity (140, 150); and wherein the method (200) comprises, in the lighting system control entity (140, 150), controlling (210) at least one aspect of operational dependencies among the plurality of luminaires (120) in accordance with the relationship data received from the plurality of luminaires (120).

An arrangement for controlling a building automation system comprises a detection subsystem that produces detection signals (302) indicative of detected users within an area. A control signal generator (303) generates control signals (304) for the building automation system in response to said detection signals (302). A motion detecting part (306) receives indications (307) of moving objects, and the detection subsystem (301) produces said detection signals (302) at least partly based thereon (307). A radio quality part (308) provides (309) a quality indicator (310) indicative of an observed quality of radio frequency transmissions between nodes. The detection subsystem (301) produces said detection signals (302) also at least partly based on observed changes in the quality indicator (310).

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