EP1124209A1 - Präsenzmelder - Google Patents
Präsenzmelder Download PDFInfo
- Publication number
- EP1124209A1 EP1124209A1 EP00102834A EP00102834A EP1124209A1 EP 1124209 A1 EP1124209 A1 EP 1124209A1 EP 00102834 A EP00102834 A EP 00102834A EP 00102834 A EP00102834 A EP 00102834A EP 1124209 A1 EP1124209 A1 EP 1124209A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- room
- detector
- presence detector
- detector according
- detectors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/193—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using focusing means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
Definitions
- the present invention relates to a presence detector with a detector housing, a pyro sensor, with means consisting of individual focusing elements for focusing the the area to be monitored on the detector, thermal radiation on the pyro sensor, and with evaluation electronics for evaluating the signals from the pyro sensor.
- these presence detectors are passive infrared detectors, which are based on the signal movements of the pyro sensor that differ from the ambient temperature Detect heat sources in the surveillance room (see for example EP-A-0 303 913).
- passive infrared detectors are today in many versions and too cheap Prices available, but they are capable of resting people, for example working on a PC, only poorly or not at all, and are therefore for use as presence detectors Only very limited suitability in office rooms.
- thermopile technology a passive infrared sensor array in so-called thermopile technology is used (see European patent application 98 115 476.8), the presence detector can detect stationary objects that have a temperature difference exhibit to the environment, recognize, but also on warm objects, such as Address radiators, computers or places exposed to the sun. Furthermore with sufficient resolution, these sensor arrays are still very expensive, at least for the time being.
- a presence detector is now to be specified by the invention, which also includes seated persons reliably detected and can distinguish them from warm objects in the room. Furthermore the presence detector should also be able to estimate the occupancy rate of a room.
- this object is achieved in that the focusing elements are azimuthal and / or are split into a number of sub-elements in the elevation direction, so that In the surveillance room, surveillance areas with partially overlapping subzones with sub-areas of different signal weight are formed.
- the splitting of the focusing elements according to the invention leads to a denser coverage of the interstitial space with a reduction the gaps between the individual surveillance areas.
- the surveillance areas are known images of the so-called flakes or sensor elements of the pyro sensor on the floor or a wall of the surveillance room.
- a second preferred embodiment is characterized in that a few minutes after the high threshold value has been exceeded, a switchover to the low threshold value and that any exceeding of the low threshold value also indicates the presence a person is interpreted and the detector output for a certain activation time activated.
- a third preferred embodiment is characterized in that said activation time is between three and fifteen, preferably five, minutes, and that after an activation time of several hours, preferably after half a working day, an exceeding of the high threshold value is required, which the mentioned several hours Activation time restarts.
- the detector output is not activated and the lighting is not on. In this state the detector output can be activated only take place if the sensor signal exceeds the high threshold value, when a person enters the surveillance room. In this case the detector output activated and, for example, the lighting and possibly other conditioning devices of the surveillance room switched on.
- the high threshold is lowered to the low threshold and it looks for small signals, such as small movements of sedentary people be carried out. Every such small movement leads to the sensor signal low threshold value, causing the detector output for the specified activation time of preferably five minutes is activated. If within this activation time the deep If the threshold value is exceeded again, a new activation time of five minutes is started, etc. If not, it is assumed that there is no one in the surveillance room and the light is switched off. As is easy to see, the adaptive detection threshold has the big advantage that the light of empty rooms is switched off very quickly, so that substantial energy savings can be achieved. At the same time it is guaranteed that the light is not extinguished even by people who are seated.
- a third preferred embodiment of the presence detector according to the invention is identified through multiple pyro sensors, each for monitoring a particular one Discrete area of the monitoring room is provided, the processing of the signals of the individual pyro sensors takes place in separate channels.
- Another preferred embodiment of the presence detector according to the invention is characterized by a fire detector coupled to the presence detector, both detectors are arranged in a common housing and a common evaluation electronics exhibit.
- This presence detector combined with a fire detector can act as a motion detector and register the passage of people, especially at night, and / or upon detection switch on the lighting during a movement. If you have the presence detector of such Combined fire / presence detector with light switching in corridors and passage rooms coupled, one achieves increased security against fire. Because it's been proven statistically that around 30% of all fires in company buildings are set by the staff. Against Such attempts at sabotage would be coupled with the fire detectors in addition, turn on the light when a person passes through, act as a deterrent.
- the combined fire / presence detector is preferably designed such that the sensitivity of the fire detector is controlled based on the signal from the presence detector.
- the latter embodiment can be used particularly in rooms with a harsh environment, such as Smoking rooms, rooms in which welding is carried out, or in rooms with strong ones Haze or steam development, such as showers / bathrooms in hotels, large kitchens, Laundries are used to make people less sensitive in the presence of people Select parameter sets for the fire detector and thereby the frequency of false alarms to reduce.
- a harsh environment such as Smoking rooms, rooms in which welding is carried out
- rooms with strong ones Haze or steam development such as showers / bathrooms in hotels, large kitchens
- Laundries are used to make people less sensitive in the presence of people Select parameter sets for the fire detector and thereby the frequency of false alarms to reduce.
- Presence detectors are available on the market and are therefore assumed to be known; it In this context, the presence detector ECO-IR 360A from HTS and the Argus 360 presence detector from Merten. These presence detectors are based on the principle forth passive infrared detectors, which are also assumed to be known; see for example EP-A-0 303 913. Passive infrared detectors are used in particular to determine presence or the entry of unauthorized persons into the monitoring room Evidence of the typical infrared radiation emitted by these people, which is caused by the focusing means is directed onto the pyro sensor. Each focusing device consists of one Number of focusing elements.
- Either Fresnel lenses are used as focussing elements, which in the at the monitoring room facing front of the detector housing arranged entry windows for the infrared radiation is integrated (see, for example, EP-A-0 559 110), or the individual Segments or reflectors of a mirror arranged inside the detector housing (See, for example, EP-A-0 303 913). There are usually several rows of mirror segments or reflectors are provided, each row of a particular surveillance zone assigned.
- Both the Fresnel lenses and the mirrors are designed so that each surveillance zone divided into monitoring areas and thus the room to be monitored with the detector outgoing surveillance areas is covered in a fan shape. So each reflector determines a surveillance area with a defined position in the surveillance room. As soon as an object emitting heat radiation penetrates into a monitoring area is detected the sensor detects the thermal radiation emitted by this object, the detection being the safest is when the object moves across the surveillance area.
- the pyro sensor is preferably a so-called standard dual pyro sensor, as it is for example in the passive infrared detectors of Siemens Building Technologies AG, Cerberus Division, formerly Cerberus AG.
- standard dual pyro sensors contain two heat-sensitive elements or flakes, their images on the floor or a wall of the surveillance room define the surveillance areas, each of which is bordered a bundle of rays runs to the respective flake. Once emitting a heat radiation Object crosses such a beam, or in other words, in a surveillance room penetrates, the sensor detects the heat radiation emitted by this object.
- passive infrared detectors when used for intrusion monitoring, are usually mounted on a wall or in a corner of the room to be monitored
- presence detectors are usually mounted on the ceiling in the same way as fire detectors, in order to and complete coverage of the surveillance area with surveillance areas to achieve.
- Such a passive infrared detector for ceiling mounting is for example described in DE-A-195 17 517.
- the Type of installation whether on the wall or on the ceiling, but secondary.
- FIG. 1a shows an image F, F 'of the two flakes of a dual pyrosensor on a wall or displayed on the floor at a certain distance from the detector.
- Any map F, F ' corresponds to a surveillance area.
- the signal weight is over the entire area the same, and there is a relatively wide gap L. between the two images F and F ' at a distance of about 5 meters from the detector, the width of an image F or F 'is approximately 25 cm and the width determined by the mutual distance between the flakes Gap L between the pictures also 25 cm.
- the delicacy of covering the soil is limited by the geometrical dimensions of the flakes of the pyro sensor. It can be seen that a small hand movement within the outline of a figure F or F 'or within the gap L there is no detectable signal change on the pyro sensor and therefore is not detected.
- a denser coverage of the monitoring area can be achieved by splitting each monitoring area F, F 'into n * m subzones F 1 to F 4 and F 1 ' to F 4 'with, for example, n ⁇ 2, m ⁇ 2.
- Such a split is obtained by splitting each focusing element (mirror element or Fresnel lens) into n * m sub-elements, the elevation and azimuth of which are slightly staggered around the elevation and azimuth of the output element.
- the optical opening of a subzone then represents its signal weight on the pyro sensor.
- each monitoring area F, F ' is split into 2 * 2 subzones with an azimuthal shift by half a width of the flake image and a radial shift by half a length of the flake image.
- F 1 to F 4 or F 1 ' to F 4 ' results in an extended and broadened image of the flakes which, depending on the number of subzones superimposed, has subregions of different signal weights.
- the gap L 'between the monitoring rooms is considerably narrower than the gap L in Fig. 1a.
- the subregions of different signal weights are identified by different hatching in FIG. 1b.
- No hatching means that there is no overlap in the subarea in question, the subareas with overlap of two subzones are hatched and those with overlap of four subzones are double.
- This division into subzones has the advantage that a transition between sub-areas with different signal weights results in a recognizable signal from the pyro sensor.
- the transition between a subzone F 1 to F 4 , F 1 'to F 4 ' and the area surrounding it, from which the pyro sensor receives no heat radiation also generates a signal from the pyro sensor.
- Fig. 2 shows the coverage pattern of a with a presence detector of the type described monitored room in a view from above, with the presence detector mounted on a wall is.
- the presence detector is equipped with a mirror arrangement S for focusing on the detector falling heat radiation equipped on the pyro sensor.
- the coverage pattern shows the monitoring areas split into subzones on one level at a distance of 90 cm from the floor of the room; this height corresponds approximately to that of a seated person.
- the opening angle of the mirror arrangement is approximately 110 °.
- the splitting of the bundling elements The reflectors forming the mirror arrangement S are achieved in that these do not consist of a single, continuously curved surface, but of several partial surfaces of different vertical orientation (see the European patent application No. 99 119 496.0).
- the width of the intrazone gaps between the subzones corresponding to the gap L 'of FIG. 1b a surveillance area is about 10 cm and the width of the inter-zone gaps between the neighboring surveillance areas is in the middle of the surveillance room (horizontal beam from S into the monitoring room) about 20 cm.
- FIG. 3 shows a possible configuration of the detector optics for one on the ceiling of the monitoring room detectors to be mounted in a perspective view from above, so to speak into the optics.
- the detector optics is through a so-called dome lens (dome lens) 1 formed from a dome-shaped support with a variety of in these embedded lenses 2 there.
- the lenses 2 are for better clarity spaced further apart than in reality.
- the dome lens 1 made of polyethylene consists of three spherical segments 3, 3 ', 3 ", each for one Solid angle of 120 ° is provided. Each spherical segment is a pyrosensor with two or assigned to four flakes.
- Each of the lenses 2 is a quadruple lens and consists of four Cutouts of a convex lens of 25 mm, for example, slightly shifted against each other Focal length.
- the detector optics can also be used a dome-shaped Fresnel lens arrangement or a mirror arrangement, the coverage patterns in the room to be monitored are very similar.
- the presence detector described can be used in particular for automatic switching on and off the lighting and / or for the needs-based control of room conditioning devices can be used for heating / ventilation / air conditioning.
- switching the room lighting it is about entering this when a person enters an empty room and then when the person leaves a room.
- Passive infrared detector can be accomplished, switching off offers certain problems, mainly when the people in the room are only very much move little, for example doing screen work. Since it is very uncomfortable is when, despite the presence of a person in a room, the light suddenly turns off in that room presence detectors work with long dead times and typically switch the light only 30 minutes after the last detected movement in the monitoring room out. As a result, the lighting is only switched off when the last room user has gone home, which in turn leads to being practical no energy savings can be achieved.
- an adaptive detection threshold that means you can walk one People in the surveillance room (entering, walking around) a high one and those in the room assigns a small threshold to sedentary people.
- Such an adaptive detection threshold is designed as follows: When someone enters or walks around a room, this generates a large signal which exceeds a first, high threshold value. Thereby the detector output is used for light control, for some, e.g. 5 minutes activated.
- the threshold is changed to a second, low value that is slightly above the electronic noise. Now is after small signals, i.e. small movements, are on the lookout. Every time the second threshold, the activation of the detector is extended by a further 5 minutes. The happens until the entire activation time reaches half a working day, for example. Then the first threshold value is again exceeded. And with everyone If the first threshold is exceeded, the procedure starts again.
- Each of the three pyros would each be 120 ° monitor in the azimuth of the monitoring room, which divides the room into three sub-rooms would be and every pyro would be a signal for its sub-room and the detector would be a presence signal supplies for each of the three subspaces.
- FIG. 4 shows a combined fire / presence detector which consists of a fire detector 4 with integrated presence detector 5 (passive infrared detector).
- the fire detector 4 is for example a scattered light smoke detector of the type described in EP-A-0 616 305, EP-A-0 813 178 and EP-A-0 821 330 described type, with a housing 6, which has an optical module 7 and evaluation electronics 8 contains.
- the housing 6 is arched and in the area of its tip Provide smoke inlet openings 9.
- the opto-electro-optical part is on top of one Presence detector 5 with a dome lens 1 and a pyro sensor 10; the exits of the pyro sensor 10 are guided to the evaluation electronics 8, in which the signal processing both the optics module 7 and the presence detector 5.
- the presence detector 5 does not necessarily need one when it is integrated into a fire detector to have a large zone density as for that described in connection with FIGS. 1 to 3 Detection of seated people. It can also be a passive infrared detector with a dome lens or a so-called thimble passive infrared detector can be used.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Burglar Alarm Systems (AREA)
- Fire Alarms (AREA)
Abstract
Description
- Fig. 1a, 1b
- je eine Skizze zur Funktionserläuterung,
- Fig. 2
- das Überdeckungsmuster eines mit einem erfindungsgemässen Präsenzmelder überwachten Raumes,
- Fig. 3
- eine mögliche Ausgestaltung der Melderoptik; und
- Fig. 4
- eine schematische Darstellung eines kombinierten Präsenz-/Brandmelders.
- Durch Anordnung derartiger Melder und deren Vernetzung in einer bestehenden Brandmeldeanlage kann ein Eindringüberwachungssystem geschaffen werden, das beispielsweise während der Nacht den Weg von Personen in den Räumen eines Unternehmens und dergleichen aufzeichnet und bei Bedarf auf einer Anzeige sichtbar macht. Ein solches System wirkt präventiv gegen Brandlegung, wobei in diesem Zusammenhang erwähnt sei, dass etwa 30% der Brände in Unternehmen gelegt werden, und zwar meistens durch eigenes Personal. Die abschreckende Wirkung kann durch Kopplung des Systems an die Lichtschaltung noch vergrössert werden.
- Anordnung in Räumen mit rauen Umweltbedingungen, wobei sich in diesen Räumen Menschen aufhalten. Solche Räume sind beispielsweise Räume, in denen viel geraucht wird, oder Räume, in denen Schweissarbeiten erfolgen, oder Räume mit starker Dampf- oder Dunstentwicklung.
- Anordnung in Duschen, Badezimmern und Entrées von Hotelzimmern, um das leidige Problem der durch den beim Duschen oder Baden entstehenden Dunst verursachten Fehlalarme zu lösen. Die Lösung erfolgt dadurch, dass die Alarmbedingungen von der Präsenz von sich bewegenden, also nicht von schlafenden, Personen im Zimmer abhängig gemacht werden, indem der aktive Parametersatz des Brandmelders nach dem Ausmass der festgestellten Bewegungen ausgewählt wird.
- Man kann die letztere Applikation auf alle Brandmelder in Räumen mit Personenverkehr ausweiten, indem man dort nur kombinierte Brand-/Präsenzmelder einsetzt und die Parameter der Brandmelder in Abhängigkeit von der Anwesenheit von Personen auswählt.
- Anordnung von kombinierten Brand-/Präsenzmeldern in Gängen, Durchgangsräumen und Stiegenhäusern zur automatischen Lichtschaltung.
Claims (9)
- Präsenzmelder mit einem Meldergehäuse, einem Pyrosensor (10), mit aus einzelnen Fokussierelementen (2) bestehenden Mitteln (1) zur Fokussierung der aus dem zu überwachenden Raum auf den Melder fallenden Wärmestrahlung auf den Pyrosensor (10), und mit einer Auswerteelektronik- zur Auswertung der Signale des Pyrosensors (10), dadurch gekennzeichnet, dass die Fokussierelemente (2) in azimutaler und/oder in Elevationsrichtung in eine Anzahl von Subelementen aufgespaltet sind, so dass im Überwachungsraum Überwachungsbereiche mit einander teilweise überlappenden Subzonen (Fn, Fn') mit Teilgebieten von unterschiedlichem Signalgewicht gebildet werden.
- Präsenzmelder nach Anspruch 1, dadurch gekennzeichnet, dass die Auswerteelektronik eine adaptive Detektionsschwelle mit einem hohen und einem tiefen Schwellwert aufweist, wobei der hohe Schwellwert dem durch das Betreten des Überwachungsraums durch eine Person verursachten Sensorsignal entspricht und der tiefe Schwellwert etwas oberhalb des elektronischen Rauschens liegt, und dass jede Überschreitung des hohen Schwellwerts als Anzeige der Präsenz einer Person interpretiert wird und den Melderausgang für eine bestimmte Aktivierungszeit aktiviert.
- Präsenzmelder nach Anspruch 2, dadurch gekennzeichnet, dass einige Minuten nach Überschreitung des hohen Schwellwerts eine Umschaltung auf den tiefen Schwellwert erfolgt und dadurch der letztere aktiviert wird, und dass jede Überschreitung des tiefen Schwellwerts ebenfalls als Anzeige der Präsenz einer Person interpretiert wird und den Melderausgang für eine bestimmte Aktivierungszeit aktiviert.
- Präsenzmelder nach Anspruch 3, dadurch gekennzeichnet, dass die genannte Aktivierungszeit zwischen drei und fünfzehn, vorzugsweise fünf, Minuten beträgt, und dass nach einer Aktivierungszeit von mehreren Stunden, vorzugsweise nach einem halben Arbeitstag, eine Überschreitung des hohen Schwellwerts erforderlich ist, welche die genannte mehrstündige Aktivierungszeit neu startet.
- Präsenzmelder nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der genannte aktivierbare Melderausgang für das Ein- und Ausschalten der Raumbeleuchtung und/oder für die Steuerung von Raumkonditionierungseinrichtungen vorgesehen ist.
- Präsenzmelder nach einem der Ansprüche 1 bis 5, gekennzeichnet durch mehrere Pyrosensoren, von denen jeder für die Überwachung eines bestimmten diskreten Bereichs des Überwachungsraums vorgesehen ist, wobei die Verarbeitung der Signale der einzelnen Pyrosensoren in getrennten Kanälen erfolgt.
- Präsenzmelder nach den Ansprüchen 5 und 6, dadurch gekennzeichnet, dass in jedem diskreten Bereich des Überwachungsraums eine grobe Abschätzung der dort anwesenden Personen und daraus eine Gesamtabschätzung der sich im Überwachungsraum befindlichen Personen erfolgt, und dass anhand dieser Gesamtabschätzung die Steuerung der Raumkonditionierungseinrichtungen erfolgt.
- Präsenzmelder nach einem der Ansprüche 1 bis 7, gekennzeichnet durch einen mit dem Präsenzmelder (5) gekoppelten Brandmelder (4), wobei beide Melder in einem gemeinsamen Gehäuse (6) angeordnet sind und eine gemeinsame Auswerteelektronik (8) aufweisen
- Präsenzmelder nach Anspruch 8, dadurch gekennzeichnet, dass die Empfindlichkeit des Brandmelders (4) anhand des Signals des Präsenzmelders (5) gesteuert ist.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT00102834T ATE324644T1 (de) | 2000-02-11 | 2000-02-11 | Präsenzmelder |
| DE50012649T DE50012649D1 (de) | 2000-02-11 | 2000-02-11 | Präsenzmelder |
| EP00102834A EP1124209B1 (de) | 2000-02-11 | 2000-02-11 | Präsenzmelder |
| DE50015089T DE50015089D1 (de) | 2000-02-11 | 2000-09-08 | Brandmeldesystem und Brandmelder für dieses |
| EP00119625A EP1124210B1 (de) | 2000-02-11 | 2000-09-08 | Brandmeldesystem und Brandmelder für dieses |
| AT00119625T ATE391977T1 (de) | 2000-02-11 | 2000-09-08 | Brandmeldesystem und brandmelder für dieses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00102834A EP1124209B1 (de) | 2000-02-11 | 2000-02-11 | Präsenzmelder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1124209A1 true EP1124209A1 (de) | 2001-08-16 |
| EP1124209B1 EP1124209B1 (de) | 2006-04-26 |
Family
ID=8167830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00102834A Expired - Lifetime EP1124209B1 (de) | 2000-02-11 | 2000-02-11 | Präsenzmelder |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1124209B1 (de) |
| AT (2) | ATE324644T1 (de) |
| DE (2) | DE50012649D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246828A1 (de) * | 2009-04-28 | 2010-11-03 | Toshiba Lighting & Technology Corporation | Infrarotstrahldetektor und elektrische Vorrichtung |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007041548A1 (de) * | 2007-08-31 | 2009-03-05 | Abb Ag | Anwesenheitsmelder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636774A (en) * | 1983-11-08 | 1987-01-13 | American District Telegraph Company | Variable sensitivity motion detector |
| US4990783A (en) * | 1988-09-22 | 1991-02-05 | Cerberus A.G. | Range insensitive infrared intrusion detector |
| US5187360A (en) * | 1990-11-30 | 1993-02-16 | Combined Optical Industries Limited | Aspheric lens having a plurality of lenslets disposed substantially contiguously in an array |
| US5486810A (en) * | 1993-02-04 | 1996-01-23 | Schwarz; Frank | Infrared detector for detecting motion and fire and an alarm system including the same |
| US5634846A (en) * | 1995-04-25 | 1997-06-03 | Samsung Electronics Co., Ltd. | Object detector for air conditioner |
-
2000
- 2000-02-11 AT AT00102834T patent/ATE324644T1/de not_active IP Right Cessation
- 2000-02-11 DE DE50012649T patent/DE50012649D1/de not_active Expired - Fee Related
- 2000-02-11 EP EP00102834A patent/EP1124209B1/de not_active Expired - Lifetime
- 2000-09-08 AT AT00119625T patent/ATE391977T1/de active
- 2000-09-08 DE DE50015089T patent/DE50015089D1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636774A (en) * | 1983-11-08 | 1987-01-13 | American District Telegraph Company | Variable sensitivity motion detector |
| US4990783A (en) * | 1988-09-22 | 1991-02-05 | Cerberus A.G. | Range insensitive infrared intrusion detector |
| US5187360A (en) * | 1990-11-30 | 1993-02-16 | Combined Optical Industries Limited | Aspheric lens having a plurality of lenslets disposed substantially contiguously in an array |
| US5486810A (en) * | 1993-02-04 | 1996-01-23 | Schwarz; Frank | Infrared detector for detecting motion and fire and an alarm system including the same |
| US5634846A (en) * | 1995-04-25 | 1997-06-03 | Samsung Electronics Co., Ltd. | Object detector for air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246828A1 (de) * | 2009-04-28 | 2010-11-03 | Toshiba Lighting & Technology Corporation | Infrarotstrahldetektor und elektrische Vorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50012649D1 (de) | 2006-06-01 |
| DE50015089D1 (de) | 2008-05-21 |
| ATE324644T1 (de) | 2006-05-15 |
| EP1124209B1 (de) | 2006-04-26 |
| ATE391977T1 (de) | 2008-04-15 |
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