NO833244L

NO833244L - DEVICE FOR AUTOMATIC CONNECTION AND REGULATION OF A Luminaire Lighting

Info

Publication number: NO833244L
Application number: NO833244A
Authority: NO
Inventors: Peter-Wilhelm Steinhage
Original assignee: Heimann Gmbh
Priority date: 1982-09-23
Filing date: 1983-09-09
Publication date: 1984-03-26
Also published as: DE3371733D1; ATE27394T1; JPS5981897A; EP0106200B1; EP0106200A1

Abstract

1. Apparatus for the automatic switching and control of a room lighting in dependence upon the presence of a moving person at too low a lighting intensity, wherein a light sensor (1, 3) is arranged in the vicinity of an infrared detector (2) and wherein the infrared detector (2) is connected to a control circuit for switching on and off and the light sensor (1, 3) is connected to a control circuit for controlling the light output of the lighting, characterised in that the infrared detector (2) is accommodated in a housing which is impermeable to the infrared radiation to be measured ; that the housing has at least one window or opening (4, 5, 6 or 7, 8, 9) which is permeable to the infrared radiation, whereby the infrared detector has at least one visibility region (12, 13, 14 or 17, 18, 19) which with a predetermined setting-up of the apparatus can be entered and left again by a person moving in the room ; and that at least one light detector (1, 3) forming the light sensor is accommodated in the same housing.

Description

Innretning til automatisk kobling og regulering av en rombelysning Device for automatic connection and regulation of room lighting

Den foreliggende oppfinnelse angår en innretning til automatisk kobling og regulering av en rombelysning i samsvar med hovedkravets innledning. En slik innretning er beskrevet i den eldre DE patentsøknad P 32 25 254.1. Der blir detektorens siktområder definert ved en fasettoptikk. The present invention relates to a device for automatic switching and regulation of room lighting in accordance with the introduction of the main claim. Such a device is described in the older DE patent application P 32 25 254.1. There, the detector's field of view is defined by a faceted optic.

Den oppgave som ligger til grunn for den foreliggende oppfinnelse, består i å forenkle en innretning av den art som er angitt i hovedkravets innledning. Oppgaven blir løst ved de særtrekk som er angitt i hovedkravets karakteristikk. The task underlying the present invention consists in simplifying a device of the type stated in the introduction of the main claim. The task is solved by the special features specified in the characteristics of the main requirement.

I henhold til oppfinnelsen er det for mange anvendelser tilstrekkelig å avgrense og definere synsfelter ved hjelp av åpninger i et rom som er ugjennomtrengelig for stråling. Dimensjoneringen av vinduene eller åpningene retter seg i den forbindelse først og fremst etter størrelsen av det rom som skal belyses. Fordelaktig har kapselen to eller flere vinduer eller åpninger som er slik anordnet og dimensjonert at der oppstår siktområder innbyrdes adskilt av skyggeområder, og at en person som beveger seg i rommet, ved regelrett montasje av innretningen bare kan komme til syne i et siktområde og igjen fullstendig forlate dette. I den forbindelse nyttiggjør man seg for inn- og utkoblingen den endring av infrarødt-strålingens intensitet som fremkalles av bevegelsen i forhold til synsfeltet. Derved er det også mulig å koble belysningen inn resp. ut i forskjellige områder av rommet. According to the invention, it is sufficient for many applications to delimit and define fields of vision by means of openings in a space that is impervious to radiation. In this connection, the dimensioning of the windows or openings is primarily based on the size of the room to be lit. Advantageously, the capsule has two or more windows or openings which are arranged and dimensioned in such a way that there are areas of visibility separated from each other by areas of shadow, and that a person moving in the room, by regular assembly of the device, can only be seen in an area of visibility and again completely leave this. In this connection, the change in the intensity of the infrared radiation caused by the movement in relation to the field of view is utilized for switching on and off. Thereby, it is also possible to switch the lighting on or out in different areas of the room.

Blenderne er fordelaktig utført slissformet for tilpasning av synsfeltene etter den menneskelige skikkelse. Derved fås samtidig ved inntreden av en.menneskelig skikkelse et relativt sterkt signal og en stor kontrast mot den øvrige stråling som forekommer i rommet. En god adskillelse i forskjellige synsfelter og en upåklagelig bestemmelse av det om-råde i rommet som personen akkurat beveger seg i, lar seg oppnå idet den for infrarød stråling ugjennomtrengelige tildekning mellom to naboåpninger eller -vinduer har en minimal gjensidig avstand omtrent lik bredden av åpningene resp. vinduene. The apertures are advantageously made slit-shaped to adapt the fields of vision to the human figure. At the same time, when a human figure enters, a relatively strong signal and a large contrast to the other radiation occurring in the room is thereby obtained. A good separation in different fields of vision and an impeccable determination of the area in the room in which the person is just moving can be achieved as the infrared radiation-impermeable covering between two neighboring openings or windows has a minimal mutual distance approximately equal to the width of the openings respectively the windows.

Ved denne utførelse er det også uten videre mulig å ta de samlede signaler til hjelp for bestemmelsen av innkoblings-tiden, da der ved passering av flere synsfelter stadig opptrer intensitetsendringer. With this design, it is also possible to use the combined signals to help determine the switch-on time, as intensity changes constantly occur when passing several fields of view.

En gunstig strålebegrensning fås idet åpningene er utformet som dobbelte eller flerdobbelte blendere eller kanal-blendere, og idet disse blendere er anordnet bak hverandre i synsfeltets retning. Derved blir særlig en ikke punktformig lyskildes randstråler som trer ut under en stor vinkel i forhold til strålingens midtakse, absorbert, mens stråler som i det minste tilnærmelsesvis er parallelle med strålingens midtakse, slippes igjennom, så der. fremkommer et relativt smalt synsfelt med en brå overgang til den tilgrensende skyggesone. A favorable beam limitation is obtained when the openings are designed as double or multiple apertures or channel apertures, and when these apertures are arranged behind each other in the direction of the field of view. In particular, the edge rays of a non-point-shaped light source which emerge at a large angle in relation to the central axis of the radiation are thereby absorbed, while rays which are at least approximately parallel to the central axis of the radiation are let through, so there. a relatively narrow field of vision appears with an abrupt transition to the adjacent shadow zone.

For måling av lysintensiteten er der i kapselen anbragt en lysdetektor. Denne mottar.stråling fra alle åpninger og måler dermed en midlere lysverdi. En middelverdi for et meget stort vinkelområde av innfallende lys blir oppnådd idet kapselen består av et kunststoff som er gjennomtrengelig for synlig lys, men ugjennomtrengelig for infrarød stråling. Dette blir spesielt oppnådd ved at kapselen består av et hvitt innfarvet kunststoff. De vanligvis anvendte farver er i mot-setning til mange kunststoffer ikke gjennom.trengelige for infrarød stråling, men sprer lysstrålingen diffust, hvorved en særlig jevn måling av midlere lysverdi blir mulig. Som materiale egner seg alle kurante innfarvede kunststoffer, f.eks. ABS. A light detector is placed in the capsule to measure the light intensity. This receives radiation from all openings and thus measures an average light value. A mean value for a very large angular range of incident light is obtained as the capsule consists of a synthetic material which is permeable to visible light, but impermeable to infrared radiation. This is particularly achieved by the capsule consisting of a white dyed plastic. The colors usually used, in contrast to many plastics, are not transparent to infrared radiation, but spread the light radiation diffusely, whereby a particularly uniform measurement of average light value becomes possible. As a material, all curantly dyed plastics are suitable, e.g. ABS.

Den foreliggende oppfinnelse egner seg særlig godt til overvåkning av forholdsvis små rom. For denne anvendelse er det mulig ikke bare å minske omkostningene, men også å bevirke en meget enkel tilpasning til de spesielle romforhold ved valg av utforming av åpningene resp. vinduene. The present invention is particularly suitable for monitoring relatively small rooms. For this application, it is possible not only to reduce the costs, but also to effect a very simple adaptation to the special room conditions by choosing the design of the openings or the windows.

Oppfinnelsen vil nå bli nærmere belyst under henvisning til tegningen. Fig. 1 er et oppriss av en innretning ifølge oppfinnelsen. The invention will now be explained in more detail with reference to the drawing. Fig. 1 is an elevation of a device according to the invention.

Fig. 2 viser utførelsesformen på fig. 1 i snitt.Fig. 2 shows the embodiment of fig. 1 on average.

Fig. 3 viser en annen utførelsesform i snitt.Fig. 3 shows another embodiment in section.

I en kapsel er der i utførelsen på fig. 1 og 2 anordnet åpninger 4-6. Overfor disse åpninger 4-6 er der anordnet en infrarødt-detektor 2 og to lysdetektorer 1 og 3. Åpningene 4-6 begrenser synsfelter 12-14 med forskjellige synsvinkler. Lysfølerne 1 og 3 får gjennom alle tre åpninger 4-6 resp. 7-9 samtidig lysstråling som stammer fra forskjellige deler av rommet. Såfremt.kapselen er fremstilt av et lysgjennom-trengelig og lysspredende kunststoff, får lysdetektorene 1 In a capsule, there is in the embodiment in fig. 1 and 2 arranged openings 4-6. Opposite these openings 4-6, an infrared detector 2 and two light detectors 1 and 3 are arranged. The openings 4-6 limit fields of vision 12-14 with different viewing angles. The light sensors 1 and 3 get through all three openings 4-6 resp. 7-9 simultaneous light radiation originating from different parts of the room. If the capsule is made of a light-permeable and light-scattering plastic, the light detectors get 1

og 3 en for alle deler av rommet gjennomsnittlig lysintensitet for målingen. I dette tilfelle kan der også med detektorene måles en midlere lystetthet som bare refererer seg til en forholdsvis liten innfallsvinkel for lyset. Er kapselen derimot selv ugjennomtrengelig for lyset, er det å anbefale å anvende allsidig lysfølsomme detektorer, f.eks. foto-motstander. and 3 one for all parts of the room average light intensity for the measurement. In this case, the detectors can also measure an average light density that only refers to a relatively small angle of incidence for the light. If, on the other hand, the capsule itself is impermeable to light, it is recommended to use versatile light-sensitive detectors, e.g. photo resistor.

I det utførelseseksempel som er vist på fig. 3, har kapselen krum forside. Åpningene 7 og 9 har begrensninger 10 hvis tenkte forlengelser fører til hver sin kant av infrarødt-detektoren 2. Ved denne utførelsesform blir strålene fra alle slike deler av mottageren som forløper i det minste tilnærmet parallelt med synsfeltets midtlinje, sluppet uhindret igjennom, mens de skrå randstråler blir absorbert. Derved fås en særlig brå overgang fra et synsfelt 17-19 til et skyggeområde. Takket være krumningen av kapselveggen 15 og den dermed opp-nådde tilpasning av avstanden til åpningene resp. vinduene 7-9 fra infrarødt-mottageren 2, blir åpningsvinkelen for de enkelte synsfelter 17-19 avstemt seg imellom og i forhold til forholdene i rommet. In the embodiment shown in fig. 3, the capsule has a curved front. The openings 7 and 9 have limitations 10 whose imaginary extensions lead to each edge of the infrared detector 2. In this embodiment, the rays from all such parts of the receiver which run at least approximately parallel to the center line of the field of view are let through unhindered, while the oblique fringe rays are absorbed. This results in a particularly abrupt transition from a field of vision 17-19 to a shadow area. Thanks to the curvature of the capsule wall 15 and the thus achieved adaptation of the distance to the openings resp. the windows 7-9 from the infrared receiver 2, the opening angle for the individual fields of view 17-19 is coordinated among themselves and in relation to the conditions in the room.

Synsfeltet 18 er begrenset av to blendere.11 som er anordnet bak hverandre i retningen for synsfeltet 18, og hvis diametre er tilpasset den ønskede åpningsvinkel for synsfeltet. Denne utførelsesform tillater fremstilling av.åpninger resp. vinduer 8 med relativt vide toleranser. Dessuten gjør den det mulig å tilpasse synsfeltene 18 hos allerede forhånds-produserte innretninger ifølge oppfinnelsen til.de forhold som gjelder for de respektive rom. The field of vision 18 is limited by two apertures 11 which are arranged behind each other in the direction of the field of vision 18, and whose diameters are adapted to the desired opening angle for the field of vision. This embodiment allows the production of openings or windows 8 with relatively wide tolerances. Moreover, it makes it possible to adapt the fields of vision 18 of already pre-produced devices according to the invention to the conditions that apply to the respective rooms.

Claims

1. Device for automatic switching and regulation of a room lighting depending on the presence of a person who is moving, in the case of insufficient illumination, where a light sensor is arranged in the vicinity of an infrared detector, and where the infrared detector is assigned a control link for switching on and off/ and the light sensor a control link for regulating the light effect of the lighting, characterized in that the infrared detector (2) is placed in a capsule that is impermeable to infrared radiation to be measured, and that the capsule has at least one window or an opening (4-6 resp. 7-9) which is permeable to the infrared radiation, whereby for the infrared detector at least one field of view (12-14 resp. 17-19) is obtained as a persome that moves in rorame^, in the case of regular assembly may enter and again leave.

2. Device as stated in claim 1, characterized in that there are one or more windows or openings in the capsule which are arranged and dimensioned in such a way that visibility areas are created that are mutually separated by shadow areas, and that a person moving in the room, in the case of regular assembly of the device can only appear in and again completely leave one field of view.

3. Device as specified in claim 1 or 2, characterized in that the apertures are made 'slit-shaped' for adapting the fields of vision to the human figure.

4. Device as stated in claim 1, 2 or 3, characterized in that the infrared radiation-impermeable cover between two neighboring openings or windows roughly corresponds to the openings or the width of the windows in the direction of minimum mutual distance.

5. Device as stated in one of claims 1-4, characterized in that the openings are designed as double or multiple blenders or as channel mixers and these blenders are arranged behind each other in the direction of the field of vision.

6. Device as stated in one of claims 1-5, characterized in that at least one light detector is arranged in the same capsule.

7. Device as stated in one of claims 1-6, characterized in that the capsule consists of a substance which is permeable to visible light, but impermeable to infrared radiation.

8. Device as specified in claim 7, characterized in that the capsule consists of a white dyed synthetic material.