Grouping wireless lighting nodes according to a building room layout

A technology for lighting nodes and buildings, applied in lighting devices, radio wave measurement systems, data exchange networks, etc., can solve the problem of not specifically solving the problem of assigning lighting nodes to switch control nodes

Active Publication Date: 2008-03-05
SIGNIFY HLDG BV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another disadvantage is that the tasks assigned by the nodes are technical jobs that require the support of lighting control experts
[0004] Numerous previous technical documents (such as WO01/97466, and Patwar i et al.: "RelativeLocation Estimation in Wireless Senso...

Method used

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  • Grouping wireless lighting nodes according to a building room layout
  • Grouping wireless lighting nodes according to a building room layout

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Embodiment Construction

[0022] A number of techniques are available for determining the spatial location of wirelessly connected nodes in a network. One example is the signal "time of flight" (ToF) method, where the time it takes for a signal to pass between nodes is used to estimate the distance between nodes. This provides a very accurate estimate of the distance between nodes and is relatively immune to physical obstruction between signaling nodes. Therefore, this is a common method for determining distances between nodes. An alternative technique is to use Received Signal Strength Indication (RSSI) measurements to provide an estimate of the distance between two nodes. Because received signal strength decreases with distance, the RSS I reading turns into an actual estimate of distance.

[0023] RSSI technology is slightly less accurate than ToF ranging and is usually less used for automatic position detection. A characteristic of RSSI ranging is that it is subject to absorption and dispersion b...

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Abstract

A method for determining the relative positions of a number of wireless-controllable building service equipment nodes and switch control nodes in a building. At least some of the several service device nodes are located in different rooms of the building and should be assigned to room-specific switch control nodes. A wireless connection is established between the nodes to determine the relative spatial location of the selected nodes using a Received Signal Strength Indicator (RSSI) value indicating the distance between two communicating nodes. Then, based on the spatial distribution of the service equipment nodes indicated by the RSSI values, the building service equipment nodes are divided into two or more groups, the first group corresponding to the service equipment nodes in the first one in said different rooms, the second A group corresponds to a serving device node in a second one in said different room. Each group of serving device nodes is then assigned to at least one associated switch control node.

Description

technical field [0001] The present invention relates to a method and arrangement for managing wireless lighting nodes in a building, in particular to assigning each of several lighting nodes or luminaires to a respective switch control node. Background technique [0002] The use of wirelessly controlled lighting units or luminaires (hereinafter referred to as light nodes) in buildings is becoming more and more common, as this can substantially reduce lighting installation costs. The physical wiring between the lighting switch or activation sensor (hereinafter referred to as the switch control node) and the lighting node is replaced by a wireless (eg radio) connection. All lighting nodes and switching control nodes only need to be connected to a suitable power source and not electrically grounded. Each luminaire includes a wireless receiver and each switch control node includes a wireless transmitter. During management, each luminaire is identified and assigned to a specifi...

Claims

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Application Information

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IPC IPC(8): H05B37/02H04L12/24
CPCH04L41/0893H05B37/0272H04L41/12H04L41/22H05B37/02G01S5/0289H05B47/10H05B47/19
Inventor S·M·比特彻斯P·R·西蒙斯
Owner SIGNIFY HLDG BV
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