JPH0496U - - Google Patents
Info
- Publication number
- JPH0496U JPH0496U JP3946390U JP3946390U JPH0496U JP H0496 U JPH0496 U JP H0496U JP 3946390 U JP3946390 U JP 3946390U JP 3946390 U JP3946390 U JP 3946390U JP H0496 U JPH0496 U JP H0496U
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- infrared sensor
- fire
- bandpass filter
- light source
- 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
Links
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案の一実施例に係るシステム全体
の構成図、第２図は上記実施例に於ける赤外線セ
ンサの代表的な検出波形例を示す図である。
１……ボイラ壁、２……重油配管、３……赤外
線センサ、４……信号処理回路、４ａ……フイル
タ（バンドパスフイルタ）、５……赤外線センサ
視角、６……外光、７……照明、８……赤外光源
、９……反射板、１０……基準赤外光。
FIG. 1 is a block diagram of the entire system according to an embodiment of the present invention, and FIG. 2 is a diagram showing a typical example of detected waveforms of an infrared sensor in the above embodiment. 1... Boiler wall, 2... Heavy oil piping, 3... Infrared sensor, 4... Signal processing circuit, 4a... Filter (band pass filter), 5... Infrared sensor viewing angle, 6... Outside light, 7... ...Illumination, 8...Infrared light source, 9...Reflector, 10...Reference infrared light.
Claims (1)
強度をもとに火災を検出するシステムに於いて、
上記赤外線センサの視野内に赤外光を放射する赤
外光源と、同光源からの赤外光を受けその反射光
を上記赤外線センサに入射する反射板と、上記赤
外線センサの受光信号から特定低周波帯を除いた
信号成分を除去するバンドパスフイルタとを設け
、上記バンドパスフイルタを経た赤外線センサの
出力波形から火災要因を判別することを特徴とす
る火災検出システム。 In a system that detects fire based on the intensity of infrared rays from an object obtained by an infrared sensor,
an infrared light source that emits infrared light within the field of view of the infrared sensor; a reflector that receives the infrared light from the light source and makes the reflected light enter the infrared sensor; A fire detection system comprising: a bandpass filter for removing signal components other than a frequency band; and determining the cause of the fire from the output waveform of an infrared sensor that has passed through the bandpass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946390U JP2531468Y2 (en) | 1990-04-16 | 1990-04-16 | Fire detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946390U JP2531468Y2 (en) | 1990-04-16 | 1990-04-16 | Fire detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0496U true JPH0496U (en) | 1992-01-06 |
| JP2531468Y2 JP2531468Y2 (en) | 1997-04-02 |
Family
ID=31548394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3946390U Expired - Lifetime JP2531468Y2 (en) | 1990-04-16 | 1990-04-16 | Fire detection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531468Y2 (en) |
-
1990
- 1990-04-16 JP JP3946390U patent/JP2531468Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2531468Y2 (en) | 1997-04-02 |
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