EP0130307A2 - Mit Abtastelement ausgestatteter Branddetektor - Google Patents

Mit Abtastelement ausgestatteter Branddetektor Download PDF

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Publication number
EP0130307A2
EP0130307A2 EP84104862A EP84104862A EP0130307A2 EP 0130307 A2 EP0130307 A2 EP 0130307A2 EP 84104862 A EP84104862 A EP 84104862A EP 84104862 A EP84104862 A EP 84104862A EP 0130307 A2 EP0130307 A2 EP 0130307A2
Authority
EP
European Patent Office
Prior art keywords
time
sensor
output level
fire detector
output
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
Application number
EP84104862A
Other languages
English (en)
French (fr)
Other versions
EP0130307A3 (en
EP0130307B1 (de
Inventor
Yoshiaki C/O Nohmi Bosai Kogyo Co. Ltd. Okayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo Co Ltd
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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Priority to AT84104862T priority Critical patent/ATE76211T1/de
Publication of EP0130307A2 publication Critical patent/EP0130307A2/de
Publication of EP0130307A3 publication Critical patent/EP0130307A3/en
Application granted granted Critical
Publication of EP0130307B1 publication Critical patent/EP0130307B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • This invention relates to a fire detector which is equipped with a sensor detecting physical quantity of heat, light or smoke and which, in particular, stores the time when the fire detector has operated and the output of the sensor at that time so that these stored data may be indicated whenever required later.
  • the conventional fire detector of this kind continuously supervises changes in output level of the above sensor and operates when the predetermined basic level is exceeded. Therefore, even though one can know by operation of the fire detector that the output level has exceeded the basic level, it is not possible to know later the actual output level at that time or the operating time of the detector. Therefore, it has been impossible to clear up the cause of the false alarm if produced by the fire detector.
  • this invention offers a fire detector which is equipped means to store the time when the fire detector has operated and the output level of the sensor at that time, and to indicate the stored time and output level at any time so that these stored data may be confirmed later whenever necessary.
  • the switch SW 1 , resistor R 2 and input terminal TN 1 are provided to clear the RAM8 by operation of the switch or external apparatus.
  • the switch SW 2 , resistor R z and input terminal IN 2 , the switch SW 3 , resistor R 3 and input terminal IN 3 , and the switch SW 4 , resistor R4 and input terminal IN 4 are provided to switch the indication of the first indicating part 5 from the time to the output level of the sensor 1 by operation of the respective switch or external apparatus, and to cause the second indicating part 6 to indicate the time when the fire detector operated and the output level of the sensor 1 at that time.
  • the output terminals OUT 1 ⁇ OUT 4 are used for transmitting the time and output level signal to the external apparatus corresponding to the first indicating part 5 and second indicating part 6.
  • the output of the sensor 1 is always amplified by the amplifier 2, and the analogue signal indicating the output level is converted to a digital signal by the A - D converter, which is then sent to the CFU9.
  • the ROM7 stores the basic level for comparison with the output level of the sensor 1. As the CPU9 starts operating (step 1), the RAMS in which past data have been stored is cleared (step 3) if the switch SW 1 for clearing the RAM8 is set in the ON position (step 2).
  • step 2 In case the switch SW 1 is set in the OFF position (step 2), it is judged that there is no need of clearing the RAM8, and with the signals from the clock part 4 and A - D converter 3 the present time and output level of the sensor 1 are read in (stops 4 and 5) respectively. Then, a discrimination is made as to whether the switch SW 2 used for indicating the output level of the sensor 1 on the first indicating part 5 is set in the ON position (step 6). Nevertheless, since the switch SW 2 is normally set in the OFF position, the first indicating part 5 indicates the present time (step 7). And the output level of the sensor 1 which has been read in at the above step 5 is compared with the basic level stored in the ROM7 (step 9).
  • a discrimination is made as to whether the second indicating part 6 is giving the past indication (indication given at the time of the previous operation) (step 10). If yes, the second indicating part 6 is cleared (step 11). In the both cases a discrimination is made as to whether the switches SW3 and SW 4 which cause the second indicating part 6 to indicate the operating time and the output level of the sensor 1 at that time are set in the ON position (step 12). Nevertheless, as the switches SW3 and SW 4 are normally set in the OFF position, the operation goes back to the above step 2 and repeatedly follows the above steps.
  • step 9 if the output level exceeds the basic level (step 9), the fire detector produces a fire alarm (step 13), which is transmitted to a control panel which is not shown in the figure. And the time and the output level of the sensor 1 at this time is written in and stored in the RAM8 (step 14), and the operations after the step 2 are repeated.
  • step 6 By switching on the switch SW 2 for output level indication (step 6) it is possible to cause the first indicating part 5 to indicate the present output in place of the indicated time (step 8) so that changes in output level of the sensor 1 may be checked whenever necessary.
  • the switches SW 3 and SW 4 should be set in the ON position (step 12). Then, the operating time stored in the RAMS is read out (step 15) and indicated on the second indicating part 6 (step 16). Furthermore the output level of the sensor 1 at the above operating time is read out (step 17) and indicated on the second indicating part 6 together with the above operating time (step 18).
  • the above has described the operating procedure by means of the switches SW 1 ⁇ SW 4 . It is also possible to remotely cause the above operation to be performed by operating external apparatus which constitute operating means and are connected to the input terminals IN 1 ⁇ IN4. Furthermore it is possible to connect external apparatus which constitute indicating means to the output terminals OUT 1 ⁇ OUT 4 so that the above mentioned various indications may be given on these indicating means together with or in place of the indications given by the first and second indication means.
  • the first indicating part 5 is so devised that time alone is indicated at all times and the output level can be indicated whenever necessary by operation of the switch SW 2 , other indicating methods may also be adopted, e.g. simultaneous indication of both time and the output level, a choise of which should be made properly.
  • the fire detector according to this invention is equipped with a sensor which detects physical quantity of heat, light or smoke, and means to store the time and output level of the sensor when the fire detector operated and to indicate the stored time and output level at any time. Therefore it is possible to confirm the time when the fire detector operated and the above mentioned physical quantity at that time whenever necessity arises later. This feature is particularly advantageous in case the fire detector falsely operated, and makes possible to clear up the cause. As described above, this invention offers a fire detector having such advantages that have never been realized in the conventional detectors.
  • Figure 1 is a block diagram of an embodiment according to this invention.
  • Figure 2 is a flow chart to illustrate operation of CPU9.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Paper (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP84104862A 1983-06-03 1984-04-30 Mit Abtastelement ausgestatteter Branddetektor Expired - Lifetime EP0130307B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104862T ATE76211T1 (de) 1983-06-03 1984-04-30 Mit abtastelement ausgestatteter branddetektor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP98058/83 1983-06-03
JP58098058A JPS59223896A (ja) 1983-06-03 1983-06-03 センサを備えた火災感知器

Publications (3)

Publication Number Publication Date
EP0130307A2 true EP0130307A2 (de) 1985-01-09
EP0130307A3 EP0130307A3 (en) 1987-07-29
EP0130307B1 EP0130307B1 (de) 1992-05-13

Family

ID=14209704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104862A Expired - Lifetime EP0130307B1 (de) 1983-06-03 1984-04-30 Mit Abtastelement ausgestatteter Branddetektor

Country Status (8)

Country Link
EP (1) EP0130307B1 (de)
JP (1) JPS59223896A (de)
AT (1) ATE76211T1 (de)
DE (1) DE3485713D1 (de)
DK (1) DK166109C (de)
ES (1) ES8504398A1 (de)
FI (1) FI842160A (de)
NO (1) NO842183L (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396966A1 (de) * 1989-05-08 1990-11-14 Santa Barbara Research Center Tragbares Datenerfassungssystem für die Messwerte von Strahlungsdetektoren
GB2255216A (en) * 1991-04-03 1992-10-28 Virtual Logic Limited Elapsed event display
DE4402007A1 (de) * 1993-01-22 1994-07-28 Vaillant Joh Gmbh & Co Stelleinrichtung
AT398847B (de) * 1993-01-22 1995-02-27 Vaillant Gmbh Stelleinrichtung
GB2344175A (en) * 1998-11-30 2000-05-31 Hochiki Co A detected information display system in a fire detection system
GB2348531A (en) * 1999-02-17 2000-10-04 Bambour Olubukola Omoyiola Forest fire detector unit
GB2514669A (en) * 2013-04-17 2014-12-03 Honeywell Int Inc A system and method for storing and monitoring events at security devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6473494A (en) * 1987-09-16 1989-03-17 Nittan Co Ltd Fire alarm system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623087A (en) * 1968-11-21 1971-11-23 Mosler Safe Co Alarm monitoring system
US3665399A (en) * 1969-09-24 1972-05-23 Worthington Corp Monitoring and display system for multi-stage compressor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5476832A (en) * 1977-11-28 1979-06-19 Fujimoto Seiyaku Kk Composition for hard capsule of niphedipine having good effluent ratio
JPS55166794A (en) * 1979-06-13 1980-12-26 Toshiba Electric Equip Fire sensor
JPS6024996B2 (ja) * 1980-09-30 1985-06-15 ホーチキ株式会社 火災検出装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623087A (en) * 1968-11-21 1971-11-23 Mosler Safe Co Alarm monitoring system
US3665399A (en) * 1969-09-24 1972-05-23 Worthington Corp Monitoring and display system for multi-stage compressor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396966A1 (de) * 1989-05-08 1990-11-14 Santa Barbara Research Center Tragbares Datenerfassungssystem für die Messwerte von Strahlungsdetektoren
GB2255216A (en) * 1991-04-03 1992-10-28 Virtual Logic Limited Elapsed event display
GB2255216B (en) * 1991-04-03 1994-07-27 Virtual Logic Limited Elapsed event display
DE4402007A1 (de) * 1993-01-22 1994-07-28 Vaillant Joh Gmbh & Co Stelleinrichtung
AT398847B (de) * 1993-01-22 1995-02-27 Vaillant Gmbh Stelleinrichtung
DE4402007C2 (de) * 1993-01-22 2000-09-14 Vaillant Joh Gmbh & Co Stelleinrichtung
GB2344175A (en) * 1998-11-30 2000-05-31 Hochiki Co A detected information display system in a fire detection system
GB2348531A (en) * 1999-02-17 2000-10-04 Bambour Olubukola Omoyiola Forest fire detector unit
GB2514669A (en) * 2013-04-17 2014-12-03 Honeywell Int Inc A system and method for storing and monitoring events at security devices
GB2514669B (en) * 2013-04-17 2018-02-14 Honeywell Int Inc System and method for storing and monitoring events at security devices

Also Published As

Publication number Publication date
DK274284D0 (da) 1984-06-01
EP0130307A3 (en) 1987-07-29
DE3485713D1 (de) 1992-06-17
ES533356A0 (es) 1985-04-01
FI842160A (fi) 1984-12-04
NO842183L (no) 1984-12-04
JPS59223896A (ja) 1984-12-15
EP0130307B1 (de) 1992-05-13
FI842160A0 (fi) 1984-05-30
DK274284A (da) 1984-12-04
DK166109B (da) 1993-03-08
ES8504398A1 (es) 1985-04-01
ATE76211T1 (de) 1992-05-15
DK166109C (da) 1993-07-19

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