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> Light management / Presence detection
Automatic switch-onSensors
When using presence detection for lighting control, there are two basic initial statuses that need to be distinguished: Presence status and absence status.
Typical motion detectors (see footnote) installed on buildings are tasked with registering approaching persons reliably and switching on the light. Where they are installed on front doors, they are usually intended to keep the light switched on for as long as the person lingers in the entrance area. The aim is to provide protection against break-ins and accident risks by avoiding darkness.
In contrast, an indoor light management system’s presence detection facility has the (main) task of reliably turning off the light once no more persons are present in the room – and only then. Inasmuch, one could also call this feature "absence detection". Energy is only saved in cases of absence, which is the installation’s intended purpose (see also chapter "Light and the environment").
In the following, the indoor purpose – meaning "absence detection" – and its many implementation constellations are addressed.
The widespread distinction between motion detection and presence detection will not be considered here, since both terms refer to individually installable functional units with different ranges of function (whereby the distinction is not clear). This text is intended to solely address the presence detection function – regardless of the installation device’s range of function.
Light management systems Automatic switch-on
Automatic switch-on Sensors
Presence detection at the workstation using passive infrared (PIR) sensors Presence detection on traffic routes using passive HF sensors
Introduction Visual needs Need for orientation Non visual needs
Guidelines Overview Work places Visual task area Surrounding area Illuminance Luminance distribution Limitation of glare Lighting direction, modelling Aspects of colour Flicker and stroboscopic effects Daylight
Maintenance Factor Light and safety at work Light and non-visual effects Light and economy Light and environment Lighting design Lighting measurement Emergency lighting
Lighting of traffic zones and geneal areas in buildings Lighting of industrial activities and crafts Lighting of offices and VDU workstations Lighting of design and CAD offices Lighting of sports facilities Lighting of health care facilities Lighting of geriatric care facilities and nursing homes Lighting of public areas Lighting of salesrooms Lighting of educational facilities Lighting of traffic areas Lighting of car parks Ligthing of further indoor spaces
Luminaires The enhanced concept of quality Photometric classification Photometric properties Photo biology safety Mounting and electrical connection Luminaire labelling Luminaire operation LED luminaire operation Operation of FL luminaires Electrical safety Fire protection Electromagnetic safety Mechanical safety Chemical and miscellaneous impact Acoustic properties Ventilation properties
Firehazardous locations Room with bathtubs and showers Swimming baths Exterior installations Agricultural and gardening plant locations Food industry Clean rooms Requirements on mediacal rooms Emergency light installations
Luminaire selection chart
Light management application and function Presence detection Daylight-dependent regulation Interfaces Building management, KNX and other bus systems
Light sources types Characteristics of light sources
ABC, DF, G, ILM, NO, P, QRSUV, W
Subject index
StandardsGuidelines and instructionsEuropean directives and regulationsFurther publications
Lighting societies
Standardisation institutes
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