公开(公告)号：US3319069A

公开(公告)日：1967-05-09

申请号：US39244964

申请日：1964-08-27

申请人： AMERICAN DISTRICT TELEGRAPH CO

发明人： VASSIL THEO N

IPC分类号： G08B17/107

CPC分类号： G08B17/107 ,  G08B17/113

公开(公告)号：US3316410A

公开(公告)日：1967-04-25

申请号：US47131765

申请日：1965-07-12

申请人： CERBERUS AG

发明人： ERNST MEILI ,  THOMAS LAMPART

IPC分类号： G01N15/06 ,  G01N21/53 ,  G08B17/00 ,  G08B17/107

CPC分类号： G01N21/53 ,  G01N15/065 ,  G08B17/00 ,  G08B17/107

公开(公告)号：US2572008A

公开(公告)日：1951-10-23

申请号：US67452246

申请日：1946-06-05

申请人： C O TWO FIRE EQUIPMENT CO

发明人： NOEL CAHUSAC CLARENCE ,  DIEHL DONALD A

IPC分类号： G08B17/107

CPC分类号： G08B17/107 ,  G08B17/113

公开(公告)号：US2537028A

公开(公告)日：1951-01-09

申请号：US61974445

申请日：1945-10-02

申请人： C O TWO FIRE EQUIPMENT CO

发明人： NOEL CAHUSAC CLARENCE ,  ALLEN FRANK B

IPC分类号： G08B17/107

CPC分类号： G08B17/107 ,  G08B17/113

公开(公告)号：US12073700B2

公开(公告)日：2024-08-27

申请号：US17058491

申请日：2019-07-02

申请人： Carrier Corporation

发明人： Michael J. Birnkrant ,  Jennifer M. Alexander

IPC分类号： G08B17/107 ,  G01N21/53 ,  G08B13/187 ,  G08B25/04 ,  G08B26/00

CPC分类号： G08B17/107 ,  G01N21/53 ,  G08B13/187 ,  G08B25/04 ,  G08B26/006 ,  G01N2201/084

摘要： A detection system for measuring one or more conditions within a predetermined area includes at least one fiber optic cable for transmitting light to and receiving scattered light from one or more nodes and a cover plate having an internal cavity. The cover plate surrounds the one or more nodes such that the one or more nodes are in communication with the internal cavity. A control system is operably coupled to the at least one fiber optic cable so that the scattered light received by the one or more nodes is transmitted to the control system. The control system analyzes the scattered light to evaluate a condition at the one or more nodes.

公开(公告)号：US12038365B2

公开(公告)日：2024-07-16

申请号：US17617650

申请日：2020-06-05

申请人： ams Sensors Germany GmbH

发明人： Alex Lollio ,  Boon Chong Cheah ,  Filip Frederix ,  Remco Verdoold ,  Markus Dantler ,  Erik Jan Lous

IPC分类号： G01N15/0205 ,  G01N15/00 ,  G01N15/06 ,  G01N15/075 ,  G01N21/359 ,  G08B17/107

CPC分类号： G01N15/0211 ,  G01N15/0205 ,  G01N15/06 ,  G08B17/107 ,  G01N2015/0046 ,  G01N15/075 ,  G01N21/359

摘要： A particle detector. The particle detector comprises one or more light sources, an optical sensor, and a controller. The one or more light sources are collectively operable to simultaneously produce at least two wavelength ranges of emitted light. The optical sensor is configured to sense light of the at least two wavelength ranges emitted by the one or more light sources and to distinguish each range. The controller is configured to detect particles based on the light sensed by the optical sensor.

公开(公告)号：US20240233516A1

公开(公告)日：2024-07-11

申请号：US18540288

申请日：2023-12-14

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Hoe-Sung YANG ,  Soocheol Kim ,  Hyunseok Kim ,  Jin Hwa Ryu ,  So Yung Park ,  Kang Bok Lee ,  Yong Tae Lee ,  Kwang-Soo Cho ,  Kyu Won Han

IPC分类号： G08B29/14 ,  G08B17/107 ,  G08B21/18

CPC分类号： G08B29/145 ,  G08B17/107 ,  G08B21/182

摘要： The present invention is directed to reducing non-fire alarms by distinguishing between smoke caused by an actual fire and non-fire smoke generated in daily life when an event suspected to be a fire occurs. The present invention provides an apparatus and method for determining whether a fire occurs using a smoke detector, which includes a light emitter for generating multiple wavelengths, a light receiver configured to detect light scattered by particles of smoke, and a fire determiner for checking whether the strength of a signal of the detected scattered light exceeds a threshold and generating an alarm, to use characteristics of multiple wavelengths in a photoelectric fire detection apparatus. The fire determiner calculates normalized values by normalizing measured values for the scattered light, and calculates a singular value from the normalized values as a criterion for determining whether the smoke is caused by a fire or a non-fire.

公开(公告)号：US11972676B2

公开(公告)日：2024-04-30

申请号：US17529921

申请日：2021-11-18

申请人： Honeywell International Inc.

发明人： Benjamin H. Wolf ,  Hariprasad Kozhikkotakathitta Veetil ,  Himanshu Goyal

IPC分类号： G08B29/14 ,  G06F3/04817 ,  G08B17/107

CPC分类号： G08B29/145 ,  G06F3/04817 ,  G08B17/107

摘要： Devices, methods, and systems for causing a self-testing fire sensing device to initiate a fire response are described herein. One device includes a user interface, a memory, and a processor configured to execute executable instructions stored in the memory to receive, via the user interface, a selection to initiate a fire response, receive, via the user interface, a selection of a self-testing fire sensing device to initiate the fire response, transmit a command to the self-testing fire sensing device to initiate the fire response, and receive a notification of a number of output events triggered by the initiation of the fire response by the self-testing fire sensing device.

公开(公告)号：US11935380B2

公开(公告)日：2024-03-19

申请号：US18093953

申请日：2023-01-06

申请人： Honeywell International Inc.

发明人： Ronald Knox

IPC分类号： G08B17/10 ,  G08B17/107

CPC分类号： G08B17/107

摘要： Apparatuses, methods, and computer-readable media for operating a scanning smoke detector are described herein. One apparatus a laser emitter configured to emit a beam of light, a rotational component configured to rotate the emitter such that the beam periodically scans across an area, and a light receiver configured to receive a reflected portion of the beam of light and determine a presence of smoke particles in the area based on the reflected portion. The smoke detection apparatus can be configured to operate at a first power level, decrease the beam to a second power level responsive to a determination that an object in the area is in a path of the beam, and increase the beam to the first power level responsive to a determination that the object is no longer in the path of the beam.

公开(公告)号：US11854361B2

公开(公告)日：2023-12-26

申请号：US18111605

申请日：2023-02-20

申请人： PixArt Imaging Inc.

发明人： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC分类号： G08B17/10 ,  G08B17/107

CPC分类号： G08B17/107

摘要： There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.