WO2008153441A1 - Electro-optical smoke fire detector - Google Patents

Electro-optical smoke fire detector Download PDF

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Publication number
WO2008153441A1
WO2008153441A1 PCT/RU2008/000315 RU2008000315W WO2008153441A1 WO 2008153441 A1 WO2008153441 A1 WO 2008153441A1 RU 2008000315 W RU2008000315 W RU 2008000315W WO 2008153441 A1 WO2008153441 A1 WO 2008153441A1
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WO
WIPO (PCT)
Prior art keywords
detector
circuit board
printed circuit
optical camera
housing
Prior art date
Application number
PCT/RU2008/000315
Other languages
French (fr)
Russian (ru)
Inventor
Valery Vasilievich Ovchinnikov
Vladimir Emelyanovich Lipov
Original Assignee
Valery Vasilievich Ovchinnikov
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valery Vasilievich Ovchinnikov filed Critical Valery Vasilievich Ovchinnikov
Publication of WO2008153441A1 publication Critical patent/WO2008153441A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • the invention relates to a fire alarm device, and in particular, to a design of fire smoke optoelectronic detectors.
  • Known fire optoelectronic detectors contain a housing fixed to the base with an optical camera that prevents the penetration of extraneous light into it and is accessible for air with smoke. Inside the camera there is a light source and a photodetector protected from it by an opaque screen. When smoke particles penetrate into the chamber, the light of the source is scattered on them, and part of this scattered light enters the photodetector, generating an electrical signal.
  • a fire smoke optical electronic detector comprises a measuring optical camera in the form of a flat cylindrical box, which is fixed with one end face on a plate connected to the ceiling of the controlled room, and its side wall is formed by a mesh for protection against insects.
  • the end wall of the measuring chamber, remote from the named plate and facing the dome of the detector, is closed with a flat bottom.
  • the location of the printed circuit board near the base made it advisable to make an electrical connection of the printed circuit board with the contact elements of the housing intended for jointing with the contacts of the base, either by soldering or using threaded connections.
  • the basis of the present invention is the task of developing such a detector design, which would reduce the cost of a fire optoelectronic detector and operating costs by reducing the number of detector parts, reducing the material consumption of parts, simplifying its assembly, maintenance and repair.
  • This goal is achieved by the fact that in a fire smoke optoelectronic detector containing a housing having a detachable connection to a base on which electrical contacts are fixed, as well as a printed circuit board with electronic circuit elements and an optical camera containing a light source and a photodetector, a circuit board is located between the case and the optical camera.
  • the housing is equipped with springs fixed in it with its central part and abutting one end against a printed circuit board, and the other end into the contacts of the base.
  • Fig. L shows a vertical section of a fire detector with diffused light.
  • the detector shown in the drawing consists of a base 1 with contacts 2, a housing 3, an optical camera 4 with a light source 5 and a photodetector 6 located inside it, separated by an opaque partition 7, a printed circuit board 8 with electronic circuit elements.
  • the electrical connection of the printed circuit board 8 with the contacts 2 of the base 1 is provided using clamping springs 9, abutting against the printed circuit board 8 at one end, and when connecting the detector housing 3 with the base 1, they make electrical contact with the contacts 2 of the base 1.
  • the springs 9 are made in the form of a saddle, which is installed (dressed) on a specially made for this partition 10 of the housing 3.
  • This optical-electronic fire detector works as follows.
  • a light source 5 based on an infrared LED emits light pulses into the space of the optical camera 4 and in standby mode does not fall on the photodetector 6.
  • the light of the source is scattered on it, and part of this scattered light enters the photodetector 6.
  • the electrical signal is amplified and processed by the elements of the electronic circuit of the printed circuit board 8.
  • the design of the detector according to the invention with a printed circuit board 8, located between the housing 3 and the optical camera 4, provides a commercial advantage of this fire smoke optical-electronic detector, which consists in reducing the cost of its manufacture and operation due to the simplification of its design and material consumption.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The invention relates to fire alarm devices, in particular, to the structural design for electro-optical smoke fire detectors. The aim of the invention is to decrease the production and operating cost of a fire detector, to simplify the structural design thereof and to reduce the material consumption by arranging a printed circuit board between a body and an optical camera.

Description

ПОЖАРНЫЙ ДЫМОВОЙ ОПТИКО-ЭЛЕКТРОННЫЙ FIRE SMOKE OPTICAL-ELECTRONIC
ИЗВЕЩАТЕЛЬDETECTOR
Область техникиTechnical field
Изобретение относится к устройству пожарной сигнализации, а именно к конструкции пожарных дымовых оптико-электронных извеща- телей.The invention relates to a fire alarm device, and in particular, to a design of fire smoke optoelectronic detectors.
Предшествующий уровень техникиState of the art
Известные пожарные оптико-электронные извещатели содержат закрепляемый в основании корпус с оптической камерой, препятствующей проникновению в нее постороннего света и доступной для проникновения воздуха с содержанием дыма. Внутри камеры расположены источник света и защищенный от него непрозрачным экраном фотоприемник. При проникновении в камеру частиц дыма свет источника рассеивается на них, и часть этого рассеянного света попадает на фотоприемник, вырабатывая электрический сигнал.Known fire optoelectronic detectors contain a housing fixed to the base with an optical camera that prevents the penetration of extraneous light into it and is accessible for air with smoke. Inside the camera there is a light source and a photodetector protected from it by an opaque screen. When smoke particles penetrate into the chamber, the light of the source is scattered on them, and part of this scattered light enters the photodetector, generating an electrical signal.
Известный из патента DE, 4412212 пожарный дымовой оптико- электронный извещатель содержит измерительную оптическую камеру в виде плоской цилиндрической коробки, которая одной торцевой стороной закреплена на пластине, соединенной с потолком контролируемого помещения, а ее боковая стенка образована сеткой для защиты от насекомых. Торцевая стенка измерительной камеры, удаленная от названной пластины и обращенная к куполу извещателя, закрыта плоским дном.Known from the patent DE, 4412212, a fire smoke optical electronic detector comprises a measuring optical camera in the form of a flat cylindrical box, which is fixed with one end face on a plate connected to the ceiling of the controlled room, and its side wall is formed by a mesh for protection against insects. The end wall of the measuring chamber, remote from the named plate and facing the dome of the detector, is closed with a flat bottom.
Документы (международная заявка РСТ/СН 97/00270; US, 5400014; US, 5430307; DE 3334545; Каталог изделий ИВС - Сигналспецавтоматика, г. Обнинск, 2002 г., cтp.5 "Извещатель пожарный дымовой оптико- электронный ИП 212 - 44 (ДИП - 44) раскрывают пожарный дымовой оптико-электронный извещатель, содержащий корпус, имеющий разъемное соединение с основанием, размещенные в корпусе оптическую камеру и прикрепленную к ней со стороны, обращенной к основанию, печатную плату с элементами электронной схемы.Documents (international application PCT / СН 97/00270; US, 5400014; US, 5430307; DE 3334545; Product catalog IVS - Signal special automation, Obninsk, 2002, p.5 "Optoelectronic smoke and smoke detector IP 212 - 44 (DIP - 44) open a smoke optical and electronic smoke detector containing a housing having a detachable connection to the base, an optical camera and attached to it from the side facing the base, a printed circuit board with electronic circuit elements.
Такое традиционное расположение элементов конструкции извеща- теля приводит к его удорожанию, так как усложняет его компоновку, увеличивает площадь печатной платы, требует установки дополнительной защитной крышки, закрывающей корпус с платой и оптической камерой, затрудняет сборку и разборку извещателя.Such a traditional arrangement of detector structural elements leads to its cost increase, since it complicates its layout, increases the printed circuit board area, requires the installation of an additional protective cover that covers the case with the circuit board and optical camera, and makes it difficult to assemble and disassemble the detector.
В настоящее время конструкторы во всех известных разработанных оптико-электронных извещателях располагают измерительную оптическую камеру между корпусом извещателя и печатной платой с элементами электронной схемы.Currently, designers in all known developed optoelectronic detectors have a measuring optical camera between the detector housing and the printed circuit board with electronic circuit elements.
При этом в известных конструкциях расположение печатной платы вблизи основания делало целесообразным выполнять электрическое соединение печатной платы с контактными элементами корпуса, предназначенными для сочленения с контактами основания, либо путем пайки, либо с помощью резьбовых соединений.Moreover, in known designs, the location of the printed circuit board near the base made it advisable to make an electrical connection of the printed circuit board with the contact elements of the housing intended for jointing with the contacts of the base, either by soldering or using threaded connections.
Раскрытие изобретенияDisclosure of invention
В основу настоящего изобретения поставлена задача разработки такой конструкции извещателя, которая обеспечила бы снижение стоимости пожарного оптико-электронного извещателя и эксплуатационных затрат за счет уменьшения количества деталей извещателя, снижения материалоемкости деталей, упрощения его сборки, обслуживания и ремонта. Поставленная цель достигается тем, что в пожарном дымовом оптико- электронном извещателе, содержащем корпус, имеющий разъемное соединение с основанием, на котором закреплены электрические контакты, а также размещенные в корпусе печатную плату с элементами электронной схемы и оптическую камеру, содержащую источник света и фотоприемник, печатная плата расположена между корпусом и оптической камерой.The basis of the present invention is the task of developing such a detector design, which would reduce the cost of a fire optoelectronic detector and operating costs by reducing the number of detector parts, reducing the material consumption of parts, simplifying its assembly, maintenance and repair. This goal is achieved by the fact that in a fire smoke optoelectronic detector containing a housing having a detachable connection to a base on which electrical contacts are fixed, as well as a printed circuit board with electronic circuit elements and an optical camera containing a light source and a photodetector, a circuit board is located between the case and the optical camera.
Предпочтительна конструкция извещателя, в которой корпус снабжен пружинами, закрепленными в нем своей центральной частью и упирающимися одним концом в печатную плату, а другим концом в контакты основания.The preferred design of the detector, in which the housing is equipped with springs fixed in it with its central part and abutting one end against a printed circuit board, and the other end into the contacts of the base.
При такой конструкции извещателя нет необходимости применять крышку корпуса для защиты печатной платы с элементами электронной схемы, так как ее роль выполняет оптическая камера, все элементы конструкции могут быть выполнены более компактными, упрощается сборка и разборка извещателя.With such a detector design, there is no need to use a housing cover to protect a printed circuit board with electronic circuit elements, since its role is played by an optical camera, all structural elements can be made more compact, and the assembly and disassembly of the detector is simplified.
Сущность данного пожарного оптико-электронного извещателя поясняется графическим материалом, представленным на фиг.l, где изображено вертикальное сечение пожарного извещателя с рассеянным светом.The essence of this fire optoelectronic detector is illustrated by the graphic material shown in Fig. L, which shows a vertical section of a fire detector with diffused light.
Показанный на чертеже извещатель состоит из основания 1 с контактами 2, корпуса 3, оптической камеры 4 с размещенными внутри нее источником света 5 и фотоприемником 6, разделенными непрозрачной перегородкой 7, печатной платы 8 с элементами электронной схемы. Для упрощения сборки и разборки извещателя электрическое соединение печатной платы 8 с контактами 2 основания 1 обеспечивается с помощью прижимных пружин 9, упирающихся одним концом в печатную плату 8, а при сочленении корпуса 3 извещателя с основанием 1 вступающих в электрический контакт с контактами 2 основания 1. Центральная часть пружин 9 выполнена в виде седла, которое установлено (одето) на специально для этого выполненной перегородке 10 корпуса 3.The detector shown in the drawing consists of a base 1 with contacts 2, a housing 3, an optical camera 4 with a light source 5 and a photodetector 6 located inside it, separated by an opaque partition 7, a printed circuit board 8 with electronic circuit elements. To simplify the assembly and disassembly of the detector, the electrical connection of the printed circuit board 8 with the contacts 2 of the base 1 is provided using clamping springs 9, abutting against the printed circuit board 8 at one end, and when connecting the detector housing 3 with the base 1, they make electrical contact with the contacts 2 of the base 1. central part the springs 9 are made in the form of a saddle, which is installed (dressed) on a specially made for this partition 10 of the housing 3.
Данный пожарный оптико-электронный извещатель работает следующим образом. Источник света 5 на основе инфракрасного светодиода излучает импульсы света в пространство оптической камеры 4 и в дежурном режиме не попадает на фотоприемник 6. При проникновении дыма в оптическую камеру 4 свет источника рассеивается на нем, и часть этого рассеянного света попадает на фотоприемник 6. Выработанный фотоприемником электрический сигнал усиливается и обрабатывается элементами электронной схемы печатной платы 8.This optical-electronic fire detector works as follows. A light source 5 based on an infrared LED emits light pulses into the space of the optical camera 4 and in standby mode does not fall on the photodetector 6. When smoke enters the optical camera 4, the light of the source is scattered on it, and part of this scattered light enters the photodetector 6. Generated by the photodetector the electrical signal is amplified and processed by the elements of the electronic circuit of the printed circuit board 8.
Промышленная применимостьIndustrial applicability
Выполнение конструкции извещателя согласно изобретению с печатной платой 8, расположенной между корпусом 3 и оптической камерой 4, обеспечивает коммерческое преимущество данного пожарного дымового оптико-электронного извещателя, состоящее в снижении стоимости его изготовления и эксплуатации за счет упрощения его конструкции и снижения материалоемкости. The design of the detector according to the invention with a printed circuit board 8, located between the housing 3 and the optical camera 4, provides a commercial advantage of this fire smoke optical-electronic detector, which consists in reducing the cost of its manufacture and operation due to the simplification of its design and material consumption.

Claims

ФОРМУЛА ИЗОБРЕТЕНИЯ CLAIM
1. Пожарный дымовой оптико-электронный извещатель, содержащий корпус, имеющий разъемное соединение с основанием, на котором закреплены электрические контакты, а также размещенные в корпусе печатную плату с элементами электронной схемы и оптическую камеру, содержащую источник света и фотоприемник, характеризующийся тем, что печатная плата расположена между корпусом и оптической камерой.1. Fire smoke optoelectronic detector comprising a housing having a detachable connection to a base on which electrical contacts are fixed, as well as a printed circuit board with electronic circuit elements and an optical camera containing a light source and a photodetector, characterized in that the printed the board is located between the case and the optical camera.
2. Устройство по п.l, характеризующееся тем, что корпус снабжен пружинами, закрепленными в нем своей центральной частью и упирающимися одним концом в печатную плату, а другим концом в электрические контакты основания. 2. The device according to claim 1, characterized in that the housing is equipped with springs fixed in it with its central part and abutting one end against a printed circuit board and the other end against the electrical contacts of the base.
PCT/RU2008/000315 2007-06-15 2008-05-20 Electro-optical smoke fire detector WO2008153441A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2007122290/09A RU2340947C2 (en) 2007-06-15 2007-06-15 Fire fighting smoke optic-electronic detector
RU2007122290 2007-06-15

Publications (1)

Publication Number Publication Date
WO2008153441A1 true WO2008153441A1 (en) 2008-12-18

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PCT/RU2008/000315 WO2008153441A1 (en) 2007-06-15 2008-05-20 Electro-optical smoke fire detector

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IL (1) IL186816A0 (en)
RU (1) RU2340947C2 (en)
WO (1) WO2008153441A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106454261A (en) * 2016-11-09 2017-02-22 合肥万顺信息科技有限公司 Fire management method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557658A (en) * 1978-06-30 1980-01-19 Matsushita Electric Works Ltd Photo-electric type smoke detector
US4539556A (en) * 1983-04-15 1985-09-03 Pittway Corporation Combustion products detector with accelerated test
GB2172701A (en) * 1985-03-20 1986-09-24 Nittan Co Ltd Smoke detector
GB2296985A (en) * 1995-01-14 1996-07-17 Russell John Payne Lost pet alerting device
RU2189080C2 (en) * 1996-07-22 2002-09-10 Сименс Билдинг Технолоджиз, Аг Smoke alarm
RU2267813C2 (en) * 2003-02-21 2006-01-10 Валерий Васильевич Овчинников Optical smoke-sensitive alarm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557658A (en) * 1978-06-30 1980-01-19 Matsushita Electric Works Ltd Photo-electric type smoke detector
US4539556A (en) * 1983-04-15 1985-09-03 Pittway Corporation Combustion products detector with accelerated test
GB2172701A (en) * 1985-03-20 1986-09-24 Nittan Co Ltd Smoke detector
GB2296985A (en) * 1995-01-14 1996-07-17 Russell John Payne Lost pet alerting device
RU2189080C2 (en) * 1996-07-22 2002-09-10 Сименс Билдинг Технолоджиз, Аг Smoke alarm
RU2267813C2 (en) * 2003-02-21 2006-01-10 Валерий Васильевич Овчинников Optical smoke-sensitive alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106454261A (en) * 2016-11-09 2017-02-22 合肥万顺信息科技有限公司 Fire management method

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RU2007122290A (en) 2007-12-10
IL186816A0 (en) 2008-02-09
RU2340947C2 (en) 2008-12-10

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