JP2013122624A5 - - Google Patents

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JP2013122624A5
JP2013122624A5 JP2011269823A JP2011269823A JP2013122624A5 JP 2013122624 A5 JP2013122624 A5 JP 2013122624A5 JP 2011269823 A JP2011269823 A JP 2011269823A JP 2011269823 A JP2011269823 A JP 2011269823A JP 2013122624 A5 JP2013122624 A5 JP 2013122624A5
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vehicle
fire
smoke detection
smoke
observation
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JP2011269823A
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JP2013122624A (en
JP5697587B2 (en
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観測領域設定部20は、異常走行車両判定部3で登録された火災車両候補8に対して車両位置を基に煙の検出手法を選択し、煙を観測する観測領域を設定する。煙検出部21は、観測領域設定部20で選択された煙の検出手法を用いて観測領域を通過する煙を検出する。 The observation region setting unit 20 selects a smoke detection method based on the vehicle position 9 for the fire vehicle candidate 8 registered by the abnormal traveling vehicle determination unit 3, and sets an observation region for observing smoke. The smoke detection unit 21 detects smoke passing through the observation region using the smoke detection method selected by the observation region setting unit 20.

次に,観測領域の形状及び煙検出手法の決定方法を図2及び図6に基づいて説明する。画像中に火災車両候補8が出現すると、図6のマップを参照し、車両位置がマップ上のどの領域に含まれるかを識別する。図6は、例として路面を観測領域が右壁面上に設定される領域22、路面を含む領域23、左壁面上に設定される領域24の3つに分割しており、それぞれの領域22、23、24に対して異なる観測領域の形状及び煙検出手法の組み合わせを割り当てている。このとき、図2の火災車両候補8は図6のマップ上では領域22に含まれるので、領域22に割り当てられている観測領域の形状及び煙検出手法を選択し、以後の煙検出処理を行なう。 Next, a method for determining the shape of the observation region and the smoke detection method will be described with reference to FIGS. When the fire vehicle candidate 8 appears in the image, the map shown in FIG. 6 is referred to and the region on the map where the vehicle position 9 is included is identified. FIG. 6 shows an example in which the road surface is divided into three areas, an area 22 where the observation area is set on the right wall surface, an area 23 including the road surface, and an area 24 set on the left wall surface. 23 and 24 are assigned different combinations of observation area shapes and smoke detection methods. At this time, since the candidate fire vehicle 8 in FIG. 2 is included in the region 22 on the map in FIG. 6, the shape of the observation region assigned to the region 22 and the smoke detection method are selected, and the subsequent smoke detection processing is performed. .

次に、観測タイミングの制御方法を図5及び図7に基づいて説明する。火災車両候補検出機能部6で火災車両候補が登録された場合にのみ煙検出処理を開始し、先ず煙検出処理回数のカウンタを初期化する(ステップS10)。 Next, an observation timing control method will be described with reference to FIGS. Smoke detection processing is started only when a fire vehicle candidate is registered by the fire vehicle candidate detection function unit 6 , and first, a counter of the number of times of smoke detection processing is initialized (step S10).

そこで、実施の形態3では画像中に渋滞が発生しているか否かを判定し、渋滞が発生している場合に観測領域を限定して煙検出することで計算コストの増大を抑制する。なお、図8〜図10において、上記実施の形態1あるいは実施の形態2と同様の部分は同一符号を付して説明を省略する。 Therefore, in the third embodiment, it is determined whether or not there is a traffic jam in the image, and when the traffic jam occurs, the smoke is detected by limiting the observation area, thereby suppressing an increase in calculation cost. 8 to 10, the same parts as those in the first embodiment or the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

次に、画像を複数個のブロックに分割し、そのうち1つのブロックにて、ブロック内に存在する火災車両候補に対し観測領域を設定する。図9(b)では、例として画像を路面後方ブロック32、路面中間ブロック33、路面前方ブロック34の3つに分割しており、例えば路面中間ブロック33の場合に、ブロック内の2台の車両が火災車両候補であれば、それぞれに対し煙検出処理を行なう。なお、画像の分割方法はシーン毎に背景やカメラのアングル等から決定する。 Next, the image is divided into a plurality of blocks, and in one of the blocks, an observation area is set for a candidate for a fire vehicle existing in the block. In FIG. 9B, as an example, the image is divided into a road surface rear block 32, a road surface intermediate block 33, and a road surface front block 34. For example, in the case of the road surface intermediate block 33, two vehicles in the block If is a fire vehicle candidate, smoke detection processing is performed for each. The image division method is determined for each scene from the background, camera angle, and the like.

上記各実施の形態においては、カメラ1台からの映像を分析することで火災車両候補を検出しているが、車両火災の前兆及び影響は、隣接するカメラの撮影領域まで及ぶことが考えられる。例えば図12に示すような車両火災発生のシーンでは、火災車両40の周辺で交通が麻痺し、火災車両40の周辺のカメラ42で渋滞を観測することが考えられる。このような交通麻痺の状況下では、火災車両40の周辺で玉突き事故等を誘発する恐れがある。また、火災車両40が発する煙がカメラ41の撮影範囲に流入する可能性もある。このような場合、カメラ41での火災車両検出情報をカメラ42用の隣接車両火災検出装置に通知することで、この通知に応じて適した動作に切り替えることができるため、煙の検出漏れを抑制することができる。 In each of the embodiments described above, a fire vehicle candidate is detected by analyzing an image from one camera. However, it is conceivable that the signs and effects of a vehicle fire extend to the shooting area of an adjacent camera. For example, in a vehicle fire occurrence scene as shown in FIG. 12, it is conceivable that traffic is paralyzed around the fire vehicle 40 and traffic congestion is observed with the camera 42 around the fire vehicle 40. Under such a traffic paralysis situation, there is a risk of causing a ball hitting accident or the like around the fire vehicle 40. In addition, smoke generated by the fire vehicle 40 may flow into the shooting range of the camera 41 . In such a case, notification of fire vehicle detection information from the camera 41 is notified to the adjacent vehicle fire detection device for the camera 42, so that the operation can be switched to a suitable operation in accordance with this notification, so that smoke detection omission is suppressed. can do.

JP2011269823A 2011-12-09 2011-12-09 Vehicle fire detection device Active JP5697587B2 (en)

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JP2013122624A5 true JP2013122624A5 (en) 2014-03-20
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JP6620888B2 (en) * 2015-11-20 2019-12-18 富士通株式会社 Smoke detection apparatus, method and image processing apparatus
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JP2018151751A (en) * 2017-03-10 2018-09-27 大日本印刷株式会社 Fire detection device and fire detection system
JP7433102B2 (en) 2020-03-25 2024-02-19 三菱電機株式会社 fire detection system
CN114358663B (en) * 2022-03-17 2022-05-13 西华大学 Artificial intelligence-based electric automobile post-fire accident comprehensive judgment method

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JP3481397B2 (en) * 1996-07-29 2003-12-22 能美防災株式会社 Fire detector
JP2000137877A (en) * 1998-11-04 2000-05-16 Mitsubishi Electric Corp Fire detecting device
JP3909634B2 (en) * 1999-05-18 2007-04-25 小糸工業株式会社 Fire occurrence position detection device
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JP3436519B2 (en) * 2000-09-21 2003-08-11 国際航業株式会社 Observation system for plumes
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