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Lighting control with occupancy detection

A lighting control system and detector technology, applied in lighting devices, energy-saving control technology, light sources, etc., can solve the problems of wrong lighting, failure to detect, wrong detection, etc., and achieve the effect of easy connection and improved safety

Active Publication Date: 2011-06-08
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration cannot detect seated occupants or occupants in parts of the illuminated area that are not visible to the sensor, falsely turning off the lighting
False detections can also occur if motion other than the occupant is detected

Method used

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  • Lighting control with occupancy detection
  • Lighting control with occupancy detection
  • Lighting control with occupancy detection

Examples

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Embodiment Construction

[0015] figure 1 The exemplary embodiment of the present invention illustrates a simple lighting system. The system consists of two partial areas A and B, each with its own light source. The invention can also be used for a single local area and lighting systems comprising many local areas, but figure 1 The two-region embodiment of is sufficient to illustrate the invention in principle.

[0016] The local areas A, B include respective light sources LA, LB for illuminating these areas with sufficient coverage to illuminate any wearable occupancy detectors present. Each light source includes one or more light emitting units (eg fluorescent, HID, LED) arranged as needed to achieve this purpose. The light emitted by the light emitting unit is modulated to identify a particular local area where the light is located. This can be done, for example, by frequency modulating the light according to a code that uniquely identifies the respective local area. The modulation can be conti...

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Abstract

In illuminated local areas occupants are actively detected to facilitate control of the illumination and possibly other local parameters such as temperature. The emitted light in each local area is uniquely modulated to identify the respective area. The modulated light is detected by any wearable occupancy detectors in the local areas, which transmit detector-locator signals to lighting control units, thereby identifying which local areas are occupied. These signals may also uniquely identify the respective detectors, thereby enabling a lighting system controller to determine the number and identities of the detectors in each local area.

Description

technical field [0001] The present invention relates to lighting control, and more particularly to lighting control including occupancy detection. Background technique [0002] As we all know, fluorescent lamps can save a lot of energy compared with incandescent lamps. Light emitting diode (LED) light sources have the potential to replace fluorescent lamps due to their improved cost and energy efficiency, and they have the advantage of being able to control color. However, regardless of the light source, further energy savings can be achieved by dimming or turning off lighting in unoccupied areas. This requires some kind of occupancy detection. [0003] As described in US Patent 6,340,864, which is hereby incorporated by reference, an occupancy detector senses the movement of occupants within a light emitting area. This configuration cannot detect occupants who are seated or in parts of the light-emitting area that are not visible to the sensor, thereby falsely turning of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
CPCH05B37/0227H05B47/115Y02B20/40
Inventor L·王
Owner SIGNIFY HLDG BV
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