Philips Lighting Holding B.v.

Signify Holding B.v.

Yao-Jung Wen

Dagnachew Birru

Jianfeng Wang

Saeed Reza Bagheri

Maulin Dahyabhai Patel

Sri Andari Husen

Dan Jiang

Sirisha Rangavajhala

Gerardus Cornelis Petrus Lokhoff

Jules Martinus Adrianus Gerardus De Laat

Weiran Nie

Parikshit Shah

William Woody Delp

An outdoor lighting network (OLN) is disclosed as a supplementary or contingency communications infrastructure for smart city systems. The OLN may integrate light points within the network as receivers which are switched from a standard OLN communication protocol to a D2D based protocol upon disruption of a primary smart city systems communications network, wherein each communication protocol includes a respective message prioritization method. Aspects of the disclosure additionally includes methods and apparatus for implementing an outdoor lighting network which can act, in cases of primary communication failure, as a D2D network in order to pass messages from smart city system field devices, through the converted D2D OLN network and to a smart city system central manager for proper handling and distribution of the smart city system field device communications.

Outdoor lighting network as a contingency connectivity infrastructure

A system and method for maintaining a system configuration to provide desired system performance is disclosed. The system comprises a processing unit receiving sensor data associated with environmental conditions within an area, generating a map of the area based on the received sensor data, determining a change in the map of the area and determining at least one system commissioning parameter associated with the determined change in the map to compensate for or correct the change in the map. In one aspect of the invention, the sensor data is provided through a plurality of mobile devices.

System and method for maintaining building automation system performance

A method () of load adjustment sharing for a space () including a first zone () and a second zone (), and a control unit () for a load adjustment sharing system () are provided. The method comprises the steps of receiving () information () related to a load adjustment for the space, and receiving () environment information () about the first zone and environment information () about the second zone. Further, based on the environment information about the first zone, the environment information about the second zone and the information related to the load adjustment for the space, a load adjustment share () for the first zone and a load adjustment share () for the second zone are determined. The present invention may be utilized in buildings including a plurality of zones. The present invention is advantageous in that the load adjustment sharing is intelligently adapted to the environment circumstances in the different zones.

Load adjustment sharing system and method

The invention relates to a light control system () for controlling a lighting system (). The light control system () is arranged to receive a power reduction parameter (alpha). The light control system comprising a light controller () arranged to receive a measured light value from a light sensor (), to determine a light channel level value depending on the measured light value and a calibrated setpoint value if no power reduction parameter has been received, and to determine a light channel level value depending on the measured light value and a scaled calibrated setpoint value if the power reduction parameter has been received, the scaled calibrated setpoint value being equal to the calibrated setpoint value multiplied by the power reduction parameter. A load controller () is arranged to receive the light channel level value from the light controller, to determine an output level signal depending on the light channel level value if no power reduction parameter has been received and to determine a scaled output level signal if the power reduction parameter has been received, the scaled output level signal being equal to the output level signal multiplied by the power reduction parameter, and to send the output level signal or the scaled output level signal to drivers of light sources of the lighting system.

Demand responsive lighting control system and method

A system and method of controlling light distribution in a space including an installed light source, an external light source, at least one blind(s) for a window in the space, a lighting control unit and a daylight/blind control unit, the method includes, in the lighting control unit, estimating task illuminances from the installed light source and the external light source at a plurality of measuring areas within the space, determining an intensity level of each of the installed light source based on the estimated illuminances; and determining a first positioning of the blinds according to predetermined requirements and/or measurements, in the daylight/blind control unit, receiving the plurality of measuring areas data within the space, determining a second positioning of the blinds according to predetermined requirements, selecting either the first or second positioning of the blinds to provide optimal daylight comfort, glare prevention and view.

Open-loop closed-loop integrated daylight and artificial light control with multipoint sensor calibration

Growing community of inventors

Concord, CA, United States of America

Yao-Jung Wen