EP0818412B1 - Lichtschranke zum Wiederöffnen von Aufzugstüren - Google Patents
Lichtschranke zum Wiederöffnen von Aufzugstüren Download PDFInfo
- Publication number
- EP0818412B1 EP0818412B1 EP97110268A EP97110268A EP0818412B1 EP 0818412 B1 EP0818412 B1 EP 0818412B1 EP 97110268 A EP97110268 A EP 97110268A EP 97110268 A EP97110268 A EP 97110268A EP 0818412 B1 EP0818412 B1 EP 0818412B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- range
- short range
- long range
- detector
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
Definitions
- the present invention relates to a Elevator car door system with a light barrier device for detecting objects in the door opening on a walkway movable elevator door.
- U.S. Patent No. 4,452,009 (European Patent Publication No. 0081 110) shows a photocell with light emitters sliding in grooves in the door sill of the elevator car door attached and for movement next to the leading edges of the Doors are coupled to the elevator car doors.
- To the Top edges of the cabin doors are light receivers for synchronous movement with the light generators attached.
- the Light sources generate vertical light rays to the Light receivers for detecting objects near the Door edge.
- the light receivers are with the door control connected to the automatic actuation of the cabin doors to control, which turns on detection of an object to open.
- An advantage of being limited to the door edge Detection is that the door control is not unnecessary is interrupted by objects that are far away from the Door edge are.
- a disadvantage, however, is that a such photocell no from the edges of the doors spaced objects such as a person in the Corridor, which is about to enter the elevator car, recognizes.
- a detector device having a plurality of one behind the other over the path of the door arranged first detectors for detecting objects present in the door opening and additional second detectors for detecting objects before and Known behind the walkway of the door.
- the first detectors work independent of the second detectors.
- the close range detector pairs each contain one Short-range radiator for generating an infrared beam with a relatively short range in the direction of the path and Generating a near-field beam detection signal Detection of the Reflection of the Near Range Beam from the Surface of the door.
- the long range detector pairs are in each case next to an associated short-range detector pair positioned and contain a wide-area radiator for producing an infrared beam with a relatively wide Range over the track and a wide-range receiver for generating a long-range beam detection signal in Detecting the reflection of the long-range beam from a Object in the door opening area.
- the control means switches the Encoder for generating the rays, responds to each through the wide-area receiver while closing the Door generated wide-area detection signal Reopening the door, responding to each by the Short-range receiver while closing the door generated near detection signal by switching off the associated Weit Bradysgebers and responds to termination each of the short-range receivers during the Opening the door generated short-range detection signals by switching on the associated wide-range encoder.
- the control means generates a plurality of control signals, each turn on and off an associated encoder and generated cyclically in a predetermined sequence.
- Each detector pair contains at least one aperture for Shaping and straightening the rays and / or at least one Lens for shaping and directing the rays.
- the housing contains one on one Rear wall mounted upper wall, a couple on opposite ends of the upper wall and the rear wall attached end caps and one releasable on the end caps, the upper wall and the rear wall attached and the Detector pairs in the housing enclosing transparent Cover.
- FIG. 1 shows an elevator car door system with a Light barrier device 10 for detecting objects in the Door opening area of an elevator car door.
- the Photocell device 10 includes Photocell control means 11, wherein an input with an output of a power supply 12 is connected.
- the Controller 11 also has an input / output to the Generation of control signals for switching on and off a Plurality of infrared transmitters and for receiving Detection signals from a plurality of Infrared receivers connected to a signal bus 13.
- a first proximity detector 14 has a connected to the bus 13 input and an associated first short-range receiver 15 one to the bus 13th connected output.
- the encoder 14 and the receiver 15 form a close-range infrared detector pair that is adjacent to a Running path 16 of an elevator car door 17 with a front edge 17a is positioned.
- the detector pair 14 and 15 is positioned opposite an inner surface 17b of the door 17.
- an infrared ray 18 which is a relatively short one Beam range, which is at least until Inner surface 17b of the door 17 extends.
- a first Wide-range encoder 19 on which an input to the bus 13th connected, and a first wide-area receiver 20, on an output to the bus 13 is connected.
- the first wide-area encoder 19 As reaction to a generated by the control means 11 on the bus 13 Control signal, the first wide-area encoder 19 generates a Infrared beam 21 with a relatively wide beam range, which extends beyond the track 16 addition. If the Beam 21 on an object 22 in the vicinity of the path 16 incident, a reflected beam 23 for Wide-area receiver 20 generated.
- the wide-range receiver 20 reacts to the reflected beam 23 with the Generation of a long-range beam detection signal on the Bus 13 to control 11.
- On the controller 11 is a Output connected to an input of a door control 24, which is mechanically coupled to the door 17 to the door to move along the path 16 back and forth.
- the control 11 responds to the signal generated by the receiver 20 Detection signal with the generation of a Reopening signal to the door controller 24 to the run the door 17 to stop and if necessary reverse to avoid that the door leading edge 17a on the object 22nd If the object hits the path 16 inside move.
- a second proximity detector 25 is an input with connected to the bus 13, and at an associated second Short-range receiver 26 is an output with the bus 13 connected.
- the second proximity encoder 25 generates a Short-range infrared ray 27 corresponding to the infrared ray 18 like.
- the encoder 25 and the receiver 26 are a second one along the path 16 on the opposite side of the first wide-area detector pairs 19 and 20 from the first Short range detector pair 14 and 15 positioned Near detector pair.
- an input is connected to the bus 13, and at one associated wide-area receiver 29 an output is connected to the bus 13.
- the second Wide-range encoder 28 generates a Wide-range infrared ray 30, which is equal to the beam 21.
- the encoder 28 and the receiver 29 are a second along the path 16 on the opposite side of the second Close range detector pairs 25 and 26 from the first one Wide range detector pair 19 and 20 positioned Far detector pair.
- the proximity transmitter / receiver detector pairs with the Wide range transmitter / receiver detector pairs After the presentation change along the path 16 the proximity transmitter / receiver detector pairs with the Wide range transmitter / receiver detector pairs. Although only two close range detector pairs and two Wide range detector pairs may be additional Detector pairs are provided, and the total number of Detector pairs depend on the desired spacing and the length of the route 16 from.
- the light barrier device 10 is shown in FIG shown, with the door 17 so along the path 16 has moved that the near infrared ray 18 on the Front surface 17b impinges and a second reflected Beam 31 generated.
- the first Nah Schlsemflinder 15 detects the reflected beam 31 and generates Short range beam detection signal on bus 13 to Control means 11.
- the controller 11 responds to the Detection signal from the receiver 15 with the termination of Control signal for turning off the first wide-range encoder 19, whereby the first shown in Figure 1 Wide-range infrared ray 21 is deleted.
- the Wide-range receiver 20 thus receives no reflected Beam when the door 17 so before the first Wide range encoder 19 moves that the controller 11 and the Door control 24 does not stop and reverse the run cause the door 17, as it would happen otherwise, because a Object (the door) was detected. Recognizes in a similar way the second short-range receiver 26 has a (not shown, but the beam 31 same) reflected beam, the by reflection of the Short-range infrared ray 27 from the front surface 17b of the Door 17 is generated to cause the controller 11 the control signal and thus the second wide-area encoder 28th turns off before the door takes a position next to this dealer reached.
- the sequential shutdown the wide range transmitter / receiver detector pairs will cause, if the door 17 closes to the detection of objects in the part of the door opening leading from the closing door 17 is not yet covered, to allow.
- each proximity / transmitter detector pair switches the adjacent newly exposed Wide range encoder / receiver pair.
- the control means 11 to the Short-range beam detection signals respond by removing all associated long-range beam detection signals ignored, instead of switching off the wide-area emitters. So will in response to a near-field beam detection signal by the control means 11, the associated Long range detector pair locked by either the Control signal off or the associated Wide range beam detection signal ignored.
- the control means 11 activates the associated one Wide area detector pair by either the Control signal turns on or on the associated Wide range beam detection signal responds.
- FIG. 3 is a fragmentary plan view of FIG Elevator car with a light barrier device 10 after the present invention, wherein the cabin on a Floor 32 of a building is stopped.
- the floor 32 includes a formed in a corridor wall 34 Elevator entrance opening 33.
- An elevator landing door 35 is in open position and can be along a Move the travel path 36 to a closed position.
- a Elevator car 37 is a car door opening 38 for the associated cabin door 17 in a front wall 39 of the cabin educated.
- the car door 17 is in the open position and can be moved along the path 16 to to close the opening 38.
- the first close range detector pair includes the encoder 14 and the receiver 15, the first wide-area detector pair includes the transmitter 19 and the receiver 21, the second Short-range detector pair includes the encoder 25 and the Receiver 26, the second wide-range detector pair contains the encoder 28 and the receiver 29, a third Close range detector pair includes a third Short-range transmitter 40 and a third short-range receiver 41, and a third wide-area detector pair includes one third wide-area encoder 43 and a third Wide-range receiver 44.
- the detector pairs are in the Opening 38 next to the path 16 and opposite the Interior surface 17 b of the car door 17 attached.
- the encoder 14 generates the infrared beam 18, which is about the passageway 16 away and also over the Laufweg 36 away extends to both the car door 17 and the hall door 35 to capture.
- the first wide-range encoder 19 generates the Infrared beam 21 over the paths 16 and 36 away and through the opening 33 to the doors 17 and 35 from Detecting building flats from approaching objects and people.
- the second proximity encoder 25 generates the beam 27 and the second Wide-range encoder 28 the beam 30.
- the third Short-range sensor 40 is connected to the third Short range receiver 41 is connected and generates one Short-range infrared ray 42.
- the third wide-range transmitter 43 is connected to the third wide-area receiver 44 and generates a wide-range infrared ray 45.
- the three Close-range detector pairs and the three Wide range detector pairs are for illustrative purposes only, and additional detector pairs may vary depending on the desired spacing between adjacent [lacuna] and the length of the paths 16 and 36 are provided to ensure that objects from at least one Minimum size across the widths of the openings 33 and 38 can be recognized.
- a Detector assembly 46 on a downward Surface of the front wall 39 is fixed in the opening 38.
- the beam 18 includes a relatively small Area and is not affected by people and objects reflects that pass from the hallway 32 in the cabin 37, since they generally pass under the near-field beam happen.
- the long-range beam 21 an extended area and extends into the Corridor beyond the wall 34 and next to the lower edges of the Doors 17 and 35.
- the beam 21 is from each person or any object that reflects from the hallway to the cabin 37 arrive.
- the detection assembly 46 is more detailed in FIG. 5 shown.
- the detection assembly 46 includes a housing 47, which is generally in cross-section L-shaped, with a generally horizontally extending upper wall 47a and a generally vertically extending rear wall 47b, which are joined together at a respective longitudinal edge.
- a pair of end caps 48 is attached, the each having a curved edge 48a.
- the housing 47 is through a transparent front cover 49th closed, the curvature of the curved edges 48a of the End caps 48 corresponds and which is attached to them.
- One Short range detector pair transmitter / receiver module 50 includes the first proximity detector 14 and the first Short-range receiver 15.
- the module 50 is constructed so that Side wall panels 51 and / or a curved lens 52 the Infrared beam 18 passing through the transparent cover 49 is sent in the desired manner.
- One Wide range detector pair transmitter / receiver module 53 contains the first wide-range encoder 19 and the first Wide-range receiver 20.
- the module 53 is constructed in such a way that that side wall panels 54 and / or a curved lens 55th the infrared ray 21 passing through the transparent Cover 49 is sent in the desired manner to shape. Similar modules (not shown) are for each provided detector pair provided.
- FIG. 6 is a waveform diagram of FIG Control means 11 for the encoder shown in Figure 3 and Rays generated control signals.
- a control signal 18a from the Control 11 is turned on to the beam 18 for a first Time to generate, and then turned off.
- the wide-area encoder 19 by a Control signal 21a is turned on to the beam 21 to generate, which is then turned off.
- the Close range encoder 25 by a control signal 27a on and turned off to generate the beam 27.
- the wide-area encoder 28 switched on and off by a control signal 30a to the Beam 30 to produce
- the proximity detector 14 is through a control signal 42a turned on and off to the beam 42 to generate
- the wide-area encoder 43 is a through Control signal 45a turned on and off to the beam 45th to produce in sequence.
- the control means 11 repeats the cycle of Control signals. So the control signals are in order generated in cycles, making only one encoder at any one time is turned on and the control means 11 all Detection signals from receivers other than the one with the disregarded on-hook transmitters can let.
- Control signals are avoided.
- the encoder 14 generates the beam 18 as three infrared light pulses, and the controller 11 must a clocked detection signal from the receiver 15 with the same frequency received to a valid Recognize detection signal.
- the control signals 21b, 27b, 30b, 42b and 45b may be encoded in a similar manner.
- the control signal coding may be of any known form of frequency or pulse width modulation, and each Control signal can be coded differently. By Different coding could be the problem of Crosstalk can be eliminated.
- the spacing between the detector pairs 50 and the spacing between the detector pairs 53 such be that it is not necessary, as shown only in each case a detector pair with the control signals 18a, 21a, 27a, 30a, 42a and 45a turn on.
- the control signals 21b, 30b and 45b turn.
- other combinations are possible.
- the sequence of the detector assembly 46 can from left to be controlled to the right or from right to left, depending on the operating direction of the door 17. If the Elevator car doors and landing doors of which are in the middle opening type, the detection assembly 46 may be so be operated, that their course from the middle to both End caps 48 is controlled.
- the housing 47 formed as a continuous casting and cut in length, to accommodate the width of the opening 38.
- the Detector assembly 46 may be attached to existing elevator cars be installed, with the mechanical edge detectors for reserve purposes.
- the present invention is a Elevator car door system with a light barrier device 10 for detecting objects in the door opening area of a Elevator car door with a first plurality of Close range detector pairs 50 suitable for mounting in spaced relationship along the path 16 of the Elevator door 17 are suitable across the door opening 38 away, a second plurality of the wide-area detector pairs 53, for attachment along the path of the elevator door are suitable, and wherein the control means 11 with each of the Close range detector pairs 50 and each of the Wide range detector pairs 53 is connected.
- each Short range detector pair 50 includes one of Short-range radiators 14, 25 and 40 for generating the Infrared rays 18, 27 and 42 with relatively short range in the direction of the path 16 and one of the Short-range receiver 15, 26 and 41 for detecting the Reflection 31 of the near beam from the front surface 17b of the door 17 and generation of the Short-range beam detection signal.
- Each of the Wide range detector pair 53 is adjacent to an associated one Short range detector pair 50 positions and includes one the wide-area radiators 19, 28 and 43 for generating the Infrared rays 21, 30 and 45 with a relatively wide range over the Laufweg 16 and one of the Wide range receiver 20, 29 and 44 for detecting the Reflection 23 of the wide-range beam from the object 22 in the Near the door opening 38.
- the control means 11 switches the Encoders 14, 19, 25, 28, 40, and 43 to control the beams 18, 21, 27, 30, 42 and 45; and responds to each one from the short-range receivers 15, 26 and 41 during the Closing the door 17 generated Nah Victoriaskennungssignal with the switching off of the associated wide-range transmitter 19, 25 and 40, and it responds to stopping every one of them Short-range detection signals while opening the door by switching on the associated wide-range transmitter.
- Each of the Detector pairs 50 and 53 include at least one aperture 51 and 54 for shaping and directing the beams 18, 21, 27, 30, 42 and 45 and / or at least one lens 52 and 55 for Shaping and straightening the rays.
- the housing 47 is for Attach the detector pairs 50 and 53 adjacent to one Upper edge of the door opening 38 is provided.
- the housing 47 includes the upper wall 47a attached to the rear wall 47b, the pair at opposite ends of the upper wall 47a and the rear wall 47 b attached end caps 48 and the releasable at the end caps 48, the upper wall 47a and the Rear wall 47b mounted transparent cover 49, the the detector pairs 50 and 53 in the housing 47 includes.
Landscapes
- Elevator Door Apparatuses (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Description
ein Blockschaltschema einer erfindungsgemäßen ein Objekt erkennenden Fahrstuhllichtschrankenvorrichtung,
ein Blockschaltschema der in Figur 1 gezeigten Lichtschrankenvorrichtung bei Erkennung der sich bewegenden Aufzugskabinentür,
eine Bruchdarstellung einer Draufsicht einer Aufzugskabine mit der in Figur 1 gezeigten Lichtschrankenvorrichtung,
eine Bruchdarstellung einer Querschnittsansicht entlang der Linie 4-4 in Figur 3,
eine auseinandergezogene perspektivische Ansicht der in Figur 4 gezeigten Lichtschrankenvorrichtung, und
ein Wellenformdiagramm von in der in Figur 1 gezeigten Lichtschrankenvorrichtung erzeugten Signalen.
Claims (4)
- Aufzugskabinentürsystem mit einer Lichtschrankenvorrichtung zum Erkennen von Objekten in der Türöffnung einer auf einem Laufweg bewegbaren Aufzugstür,
dadurch gekennzeichnet, dass entlang des Laufweges (16, 36) eine Mehrzahl von mit Steuermitteln (11) verbundenen Nahbereichsdetektorpaaren bestehend aus je einem Nahbereichsgeber (14,25,40) und einem Nahbereichsempfänger (15,26,41) zum Erkennen der Türstellung der Aufzugstür (17, 35) vorgesehen sind und
dass entlang des Laufweges (16, 36) eine Mehrzahl von mit den Steuermitteln (11) verbundenen Weitbereichsdetektorpaaren bestehend aus je einem Weitbereichsgeber (19,28,43) und
einem Weitbereichsempfänger (20,29,44) zum Erkennen der Objekte im Türöffnungsbereich vorgesehen sind, wobei in Schliessrichtung der Aufzugstür (17, 35) gesehen jeweils das Weitbereichsdetektorpaar nach dem Nahbereichsdetektorpaar angeordnet ist,
dass die Steuermittel (11) auf jedes von den Nahbereichsempfängern (15,26,41) während des Schließens der Tür (17,35) erzeugte Nahbereichserkennungssignal mit dem Sperren des zugehörigen Weitbereichsgebers (19,28,43) reagiert und dass die Steuermittel (11) auf das Beenden jedes der Nahbereichserkennungssignale während des Öffnens der Tür mit dem Entsperren des zugehörigen Weitbereichsgebers (19,28,43) reagiert. - Aufzugskabinentürsystem nach Anspruch 1,
dadurch gekennzeichnet, dass zum Vermeiden von Fremdbeeinflussung die Detektorpaare mittels zeitlich verschobenen Taktsignalen der Steuermittel (11) beaufschlagt sind. - Aufzugskabinentürsystem nach den vorhergehenden Ansprüchen,
dadurch gekennzeichnet, dass die Detektorpaare an einer nach unten gerichteten Fläche einer Vorderwand (39) in einer Öffnung (38) angeordnet sind. - Aufzugskabinentürsystem nach Anspruch 3,
dadurch gekennzeichnet, dass zur Formung der Strahlen der Detektorpaare Seitenwandblenden (51, 54) und/oder gekrümmte Linsen (52, 55) vorgesehen sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US677600 | 1996-07-08 | ||
US08/677,600 US5627439A (en) | 1996-07-08 | 1996-07-08 | Light barrier for reopening elevator doors |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0818412A1 EP0818412A1 (de) | 1998-01-14 |
EP0818412B1 true EP0818412B1 (de) | 2005-03-16 |
Family
ID=24719396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97110268A Expired - Lifetime EP0818412B1 (de) | 1996-07-08 | 1997-06-24 | Lichtschranke zum Wiederöffnen von Aufzugstüren |
Country Status (13)
Country | Link |
---|---|
US (1) | US5627439A (de) |
EP (1) | EP0818412B1 (de) |
JP (1) | JP4194673B2 (de) |
CN (1) | CN1123527C (de) |
AT (1) | ATE290990T1 (de) |
AU (1) | AU719035B2 (de) |
BR (1) | BR9703893B1 (de) |
CA (1) | CA2209543C (de) |
DE (1) | DE59712228D1 (de) |
ES (1) | ES2238705T3 (de) |
NZ (1) | NZ328126A (de) |
SG (1) | SG80575A1 (de) |
TW (1) | TW330223B (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29707451U1 (de) * | 1997-04-24 | 1997-07-03 | Sick AG, 79183 Waldkirch | Lichtschranke zur Erkennung von Objekten innerhalb eines Überwachungsbereichs |
JP2001268670A (ja) * | 2000-03-17 | 2001-09-28 | Komatsu Ltd | 作業機械の操作装置 |
JP4917203B2 (ja) * | 2000-12-27 | 2012-04-18 | オーチス エレベータ カンパニー | 検知ゾーン内にある物体を検知する方法およびシステム |
JP3995522B2 (ja) * | 2002-05-08 | 2007-10-24 | 三菱電機株式会社 | エレベータ装置 |
EP1418149B1 (de) * | 2002-11-08 | 2011-07-06 | Daniel Schürmann | Aufzugstürensicherheitseinrichtung |
US20050103577A1 (en) * | 2003-11-19 | 2005-05-19 | Warner Robert A. | Elevator door safety control device |
JP2006143443A (ja) * | 2004-11-24 | 2006-06-08 | Otis Elevator Co | 扉の安全装置 |
CN101180444B (zh) * | 2005-04-19 | 2013-01-16 | 塞德斯股份公司 | 用于控制驱动运动件的设备 |
JP5055969B2 (ja) * | 2006-11-14 | 2012-10-24 | 三菱電機株式会社 | エレベータ装置及び制御方法 |
WO2009142610A1 (en) * | 2008-05-21 | 2009-11-26 | Otis Elevator Company | Door zone protection |
JP2012144328A (ja) * | 2011-01-12 | 2012-08-02 | Toshiba Elevator Co Ltd | エレベータ |
CN103748027B (zh) * | 2011-06-28 | 2016-03-02 | 空气干燥机有限公司 | 危险突出显示方法和装置 |
US9751727B1 (en) * | 2014-08-14 | 2017-09-05 | Precision Elevator Corp. | Elevator entry and exit system and method with exterior sensors |
CN104495591A (zh) * | 2014-12-24 | 2015-04-08 | 武真真 | 一种电梯光幕系统 |
DE102017219403A1 (de) * | 2017-10-27 | 2019-05-02 | Thyssenkrupp Ag | Synchronisierung von Türbewegungen in einer Aufzuganlage |
JP6838684B1 (ja) * | 2019-11-27 | 2021-03-03 | 三菱電機株式会社 | エレベーターの点検システム、エレベーターの点検装置、および自律移動体 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US4029176A (en) * | 1975-10-06 | 1977-06-14 | Mills Gerald W | Doorway safety device |
SE428250B (sv) * | 1979-05-31 | 1983-06-13 | Bert Jonsson | Fotoelektrisk anordning for avkenning av foremal |
CH653975A5 (de) * | 1981-12-03 | 1986-01-31 | Inventio Ag | Lichtschranke an automatisch betaetigten aufzugstueren. |
DE3603940A1 (de) * | 1986-02-07 | 1987-08-13 | Efaflex Transport Lager | Vorrichtung zur steuerung des oeffnungs- und/oder schliessvorgangs von schnellauf-toren |
US4914859A (en) * | 1987-04-16 | 1990-04-10 | Lanson Electronics, Inc. | Automatic door safety system |
US5149391A (en) * | 1988-12-09 | 1992-09-22 | Allied-Signal Inc. | Prepreg machine with a single endless conveyor belt |
US5315434A (en) * | 1991-05-21 | 1994-05-24 | Matsushita Electric Industrial Co., Ltd. | Infrared-transmissive lens and human body detecting sensor using the same |
US5149921A (en) * | 1991-07-10 | 1992-09-22 | Innovation Industries, Inc. | Self correcting infrared intrusion detection system |
US5387768A (en) * | 1993-09-27 | 1995-02-07 | Otis Elevator Company | Elevator passenger detector and door control system which masks portions of a hall image to determine motion and court passengers |
CA2158902A1 (en) * | 1994-10-25 | 1996-04-26 | Brian J. Amend | Weak beam detection |
US5739523A (en) * | 1994-11-07 | 1998-04-14 | Nabco Limited | Object sensor system for doors |
-
1996
- 1996-07-08 US US08/677,600 patent/US5627439A/en not_active Expired - Lifetime
-
1997
- 1997-06-17 SG SG9702076A patent/SG80575A1/en unknown
- 1997-06-18 NZ NZ328126A patent/NZ328126A/en unknown
- 1997-06-24 ES ES97110268T patent/ES2238705T3/es not_active Expired - Lifetime
- 1997-06-24 EP EP97110268A patent/EP0818412B1/de not_active Expired - Lifetime
- 1997-06-24 DE DE59712228T patent/DE59712228D1/de not_active Expired - Lifetime
- 1997-06-24 AT AT97110268T patent/ATE290990T1/de not_active IP Right Cessation
- 1997-07-04 CA CA002209543A patent/CA2209543C/en not_active Expired - Fee Related
- 1997-07-04 AU AU28475/97A patent/AU719035B2/en not_active Ceased
- 1997-07-07 CN CN97114580A patent/CN1123527C/zh not_active Expired - Fee Related
- 1997-07-08 BR BRPI9703893-8A patent/BR9703893B1/pt not_active IP Right Cessation
- 1997-07-08 JP JP18279397A patent/JP4194673B2/ja not_active Expired - Fee Related
- 1997-07-10 TW TW086109780A patent/TW330223B/zh active
Also Published As
Publication number | Publication date |
---|---|
AU2847597A (en) | 1998-01-15 |
CN1184768A (zh) | 1998-06-17 |
AU719035B2 (en) | 2000-05-04 |
MX9705097A (es) | 1998-06-30 |
TW330223B (en) | 1998-04-21 |
DE59712228D1 (de) | 2005-04-21 |
JP4194673B2 (ja) | 2008-12-10 |
CA2209543C (en) | 2005-09-20 |
EP0818412A1 (de) | 1998-01-14 |
CA2209543A1 (en) | 1998-01-08 |
JPH1067481A (ja) | 1998-03-10 |
NZ328126A (en) | 1998-05-27 |
ATE290990T1 (de) | 2005-04-15 |
BR9703893A (pt) | 1998-09-08 |
US5627439A (en) | 1997-05-06 |
ES2238705T3 (es) | 2005-09-01 |
BR9703893B1 (pt) | 2011-08-23 |
SG80575A1 (en) | 2001-05-22 |
CN1123527C (zh) | 2003-10-08 |
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