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JPS5960120A - Detecting method of burning-out point - Google Patents

Detecting method of burning-out point

Info

Publication number
JPS5960120A
JPS5960120A JP57170515A JP17051582A JPS5960120A JP S5960120 A JPS5960120 A JP S5960120A JP 57170515 A JP57170515 A JP 57170515A JP 17051582 A JP17051582 A JP 17051582A JP S5960120 A JPS5960120 A JP S5960120A
Authority
JP
Japan
Prior art keywords
brightness
burning
combustion
out point
picture
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.)
Pending
Application number
JP57170515A
Other languages
Japanese (ja)
Inventor
Takashi Onishi
大西 巍
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP57170515A priority Critical patent/JPS5960120A/en
Publication of JPS5960120A publication Critical patent/JPS5960120A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00Flame sensors
    • F23N2229/20Camera viewing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00Applications
    • F23N2241/18Incinerating apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Incineration Of Waste (AREA)

Abstract

PURPOSE:To enable grasping of a reliable combustion condition through detection of a burning-out point, by a method wherein a burning way is decided based on not only the magnitude of brightness but also dispersion thereof. CONSTITUTION:A burning-out point is detected through utilization of the fact that a range under combustion on a furnace floor within a furnace, an ash bed part, and a burning-out point being a boundary therebetween can be sorted based on the average of brightness of a picture photographed by an industrial television camera 10 installed to a window 9 formed in the rear wall on the ash discharge port side of a combustion furnace and on a basis of dispersion of timing brightness and brightness on a plane. Namely, a burning-out point and other combustion conditions are converted into a numerical value by displaying a picture on an ITV monitor 11 and operating the brightness and unevenness of the picture by means of a picture processing arithmetic unit 12. The result is outputted from an output part 13 comprising an alarm, a control device and the like.

Description

【発明の詳細な説明】 本発明は、燃焼炉内の炉床−Lの燃え切り点を正確かつ
自動的に検出する方法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for accurately and automatically detecting the burnout point of a hearth-L in a combustion furnace.

ごみ焼却炉の燃焼状態を観測する方法としては、]=業
用テレヒ(1’r v )で炉内の映像を撮影して1画
面−Fで燃え切り点(炉内における炉床−Vの燃焼中の
領域と燃え尽きて灰となった灰層部との境界の位置)の
位置や変化を人間が目視したり1画面の輝度の大小をマ
イコン等により画像処理するなどの方法が先に提案され
ている。しかし人間によるITVの常時監視はかなりの
重労働であり、また輝度の大小から判断する方法では、
ITVカメラの視野に灰層の盛り上りがあると燃え切り
点を誤判断する恐れがある。
The method of observing the combustion state of a garbage incinerator is to take an image of the inside of the incinerator using a commercial television (1'rv), and on one screen -F, the burnout point (of the hearth -V in the incinerator) is recorded. Methods were first proposed in which humans visually observed the position and changes in the boundary between the burning area and the ash layer that burned out and turned into ash, and the brightness of one screen was image-processed using a microcomputer, etc. has been done. However, constant human monitoring of the ITV is quite a difficult task, and the method of judging based on the brightness level is
If there is a bulge in the ash layer in the field of view of the ITV camera, there is a risk of misjudging the burnout point.

このことを図面により具体的に説明する。第1図はごみ
焼却炉内の燃焼状況を示し、第2図はITVに映った炉
内の画面を示す。第1,2図において、lはごみ焼却炉
の煙道、2は火床。
This will be explained in detail with reference to the drawings. Fig. 1 shows the combustion situation inside the waste incinerator, and Fig. 2 shows the screen inside the incinerator as shown on the ITV. In Figures 1 and 2, l is the flue of the garbage incinerator, and 2 is the fire bed.

3はストーカ、4は炉内の映像を撮影する工業用テレビ
、5は火灸、6はごみの移動方向を示す矢印、7は燃焼
中のごみ、8はごみが燃えきった後の灰層である。
3 is a stoker, 4 is an industrial television that records images inside the furnace, 5 is a moxibustion device, 6 is an arrow indicating the direction of garbage movement, 7 is burning garbage, and 8 is an ash layer after the garbage is completely burned. It is.

第2図に示すように、灰の山が燃え切り点Qを遮ぎるよ
うになると、燃え切り点Qを灰層の頂点P又はP′と誤
判断するようになる。
As shown in FIG. 2, when the pile of ash begins to block the burnout point Q, the burnout point Q is mistakenly judged to be the top P or P' of the ash layer.

本発明は、上記欠点を解消し、ごみ焼却炉等において炉
内の燃え切り点を正確かつ確実に自動的に検1」1する
方法を提案するもので、テレビカメラで撮影された燃焼
炉内の燃焼状況を示す画面を細分し、その細分された領
域毎の空間的又は時間的平均輝度及び空間的又は時間的
輝度バラツキを算出し、これらの算出値から燃え切り点
を検出することを特徴とする燃え切り点検出方法を提供
する。
The present invention solves the above-mentioned drawbacks and proposes a method for accurately and reliably automatically detecting the burnout point in a waste incinerator or the like. It is characterized by subdividing the screen showing the combustion status of the subdivided area, calculating the spatial or temporal average brightness and spatial or temporal brightness variation for each subdivided area, and detecting the burnout point from these calculated values. A burnout point detection method is provided.

本発明方法においては、炉内炉床」二の燃焼中の領域、
灰層部及びこれらの境界である燃え切り点が、テレビカ
メラで撮影された画面の輝度の平均及び時間的及び平面
上での輝度の分散(バラツキ)により区分できることを
利用して燃え切り点を検知する。
In the method of the present invention, the combustion zone of the furnace hearth,
The burnout point is determined by using the fact that the ash layer and the burnout point, which is the boundary between these areas, can be divided by the average brightness of the screen photographed by a TV camera and the temporal and planar brightness dispersion (variation). Detect.

以下本発明方法を一実施例を参照して詳細に説明する。The method of the present invention will be explained in detail below with reference to one embodiment.

第3図において、 10はρりえばごみ焼却炉等の燃焼
炉の灰υF出口側の後壁に設けられた窓9に設置11さ
れた]二業用テ1/ヒカメラ(、ITV)、+1は1.
 T Vモニタ、12は画像処理演算装置、 18はそ
の出力部で、出力部13はコントローラ、警報装置等に
接続されている。なお第1図と同一符号を付したものは
同一のものを示すので説明を省略する。
In Figure 3, 10 is a window 9 installed in the rear wall on the ash υF exit side of a combustion furnace such as a garbage incinerator. is 1.
A TV monitor, 12 an image processing arithmetic unit, 18 an output section thereof, and an output section 13 connected to a controller, an alarm device, etc. Components with the same reference numerals as in FIG. 1 indicate the same components, and therefore their explanation will be omitted.

このような装置において、ITVモニタ11に画面表示
し2画像処理演算装置12でこの画面の輝度とそのバラ
ツキを演算して燃え切り点など燃焼状況を数値化する。
In such a device, a screen is displayed on an ITV monitor 11, and a two-image processing arithmetic unit 12 calculates the brightness of this screen and its dispersion to quantify combustion conditions such as the burnout point.

これをアラームや制御機器等で構成される出力部18に
より出力する。
This is outputted by an output unit 18 consisting of an alarm, control equipment, etc.

本方法の特長である画像処理演算装置12における作用
を説明する。画面上の明るさく輝度)を順次第4図の画
面のX、y方向について走査14シ量子化する。これを
一定時間間隔毎にテークを採取して1時系列信号x +
、 7(11を得る。ここで1画面上の小区分Sを選び
、この中での輝度X1. +(t) (’ +  rは
s内の要素番号。【は(1o〜I o+ nΔto)内
での0回のサンプリンク時間)について。
The operation of the image processing arithmetic unit 12, which is a feature of this method, will be explained. The brightness on the screen is sequentially scanned and quantized in the X and Y directions of the screen shown in FIG. Takes of this are collected at regular time intervals to create one time series signal x +
, 7 (obtains 11. Now select a subdivision S on one screen and find the brightness in it X1. + (t) (' + r is the element number in s. [is (1o ~ I o + nΔto) Regarding the sample link time (0 times within).

空間的平均 xs   (s内の翳 J全体での平均輝
度) 時間的=1’均 ” +++(1(s内の特定の翳 ]
に対する時間平均輝度) 及び 空間的バラツキS、\ (各時間における位置によるバ
ラツキ) 時間的バラツキST  (各位置島、)における時間的
なバラツキ) を計算する。通常SA 、 57は平均値からの差の2
乗jll方和をとる。一方実際の焼却炉内での燃え方を
艮(観察すると、゛時間”を燃焼の113定数より十分
小さくとると次のとおりとなる。
Spatial average xs (Average brightness of all shadows in s) Temporal = 1' average ” +++ (1 (specific shadow in s)
(temporal average brightness for each position island) and spatial variation S, (variation due to position at each time) and temporal variation ST (temporal variation at each position island). Usually SA, 57 is the difference from the average value of 2
Take the sum of the squares. On the other hand, if we observe how it burns in an actual incinerator, if we take the ``time'' to be sufficiently smaller than the 113 constant of combustion, the result is as follows.

a、燃焼ラーン・・・輝度が大で、比較的安定。a. Combustion learn...High brightness and relatively stable.

1)、燃え切り点・・・輝度が明−暗の境があり時間と
位置によるゆらぎが大。
1) Burnout point: The brightness has a boundary between light and dark, and it fluctuates greatly depending on time and position.

C1灰 層 部・・・輝度が小で時間的・位置的に安定
C1 gray layer: low brightness and stable in terms of time and position.

従って、−に記の現象は2次のように対応する。Therefore, the phenomenon described in - corresponds to the second order.

aてはXs + X i、i(Qが大+SA、STが比
較的小。
a is Xs + X i, i (Q is large + SA, ST is relatively small.

bでは乙、ζ徊が大または中+SA、STが大。In b, B, ζ wander is large or medium + SA, ST is large.

Cでは乙、双肩が小+SA、STが小。In C, Otsu, double shoulders are small + SA, ST is small.

即ち+  Xs l xi +(tl、SA + 57
等を各区分で演算することにより燃焼状況が判断できる
。上述した判断の例を第4図に示す。
That is, + Xs l xi + (tl, SA + 57
The combustion status can be determined by calculating the following for each category. An example of the above-mentioned judgment is shown in FIG.

本発明方法は、以」二の様に燃え方を輝度の大小のみな
らず、その分散(バラツキ)と合せて判断することによ
って燃え切り点を検知するもので、従来の輝度の大小の
みによる方法に発生する誤判断を防止でき正確に燃焼状
況を把握することができる。
The method of the present invention detects the burnout point by determining the burnout not only in terms of the magnitude of brightness, but also in conjunction with its dispersion (variation), as described below, compared to the conventional method based only on the magnitude of brightness. It is possible to prevent misjudgments that occur during combustion and accurately grasp the combustion situation.

なお9本発明方法は1例えばごみ焼却炉の燃焼9石炭ス
トーカ炉の燃焼等の監視、自動制御等に適用される。
Note that the method of the present invention is applied to, for example, monitoring and automatic control of combustion in garbage incinerators, combustion in coal stoker furnaces, etc.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図及び第2図は先に提案された燃え切り点検出方法
を示し、このうち第1図は概要説明図、第2図はITV
に映った炉内画面を示す説明図、第8図及び第4図は本
発明方法の−実施例を示す概要説明図及び作用説明図で
ある。 1・・・煙道、2・・・火床、3・・・ストーカ、4.
10・・・TTVカメラ、11・・・ITVモニタ、1
2・・・画像処理演算装置、 18・・・出力部。
Figures 1 and 2 show the previously proposed burnout point detection method, of which Figure 1 is an overview diagram and Figure 2 is an ITV
FIG. 8 and FIG. 4 are explanatory diagrams showing the in-furnace screen shown in FIG. 1... flue, 2... grate, 3... stoker, 4.
10...TTV camera, 11...ITV monitor, 1
2... Image processing arithmetic device, 18... Output unit.

Claims (1)

【特許請求の範囲】[Claims] テレビカメラで撮影された燃焼炉内の燃焼状況を示す画
面を細分し、その細分された領域毎の空間的又は時間的
平均輝度及び空間的又は時間的輝度バラツキを算出し、
これらの算出値から燃え切り点を検出することを特徴と
する燃え切り点検出方法。
A screen showing the combustion situation in the combustion furnace photographed by a television camera is subdivided, and the spatial or temporal average brightness and spatial or temporal brightness variation for each subdivided area are calculated,
A burnout point detection method characterized by detecting a burnout point from these calculated values.
JP57170515A 1982-09-29 1982-09-29 Detecting method of burning-out point Pending JPS5960120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57170515A JPS5960120A (en) 1982-09-29 1982-09-29 Detecting method of burning-out point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57170515A JPS5960120A (en) 1982-09-29 1982-09-29 Detecting method of burning-out point

Publications (1)

Publication Number Publication Date
JPS5960120A true JPS5960120A (en) 1984-04-06

Family

ID=15906370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57170515A Pending JPS5960120A (en) 1982-09-29 1982-09-29 Detecting method of burning-out point

Country Status (1)

Country Link
JP (1) JPS5960120A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63273716A (en) * 1987-04-30 1988-11-10 Ebara Infilco Co Ltd Combustion control method of incinerator
JPS6467523A (en) * 1987-09-08 1989-03-14 Nihon Cement Method of detecting burn-off point of incinerator by processing picture
JPH01277118A (en) * 1988-04-27 1989-11-07 Nippon Cement Co Ltd Completely burning point inspection method of incinerator by image processing
AT512353A1 (en) * 2012-01-11 2013-07-15 Siemens Ag Oesterreich METHOD FOR CONTROLLING A COMBUSTION AND / OR GASING DEVICE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63273716A (en) * 1987-04-30 1988-11-10 Ebara Infilco Co Ltd Combustion control method of incinerator
JPH0333963B2 (en) * 1987-04-30 1991-05-21 Ebara Infilco
JPS6467523A (en) * 1987-09-08 1989-03-14 Nihon Cement Method of detecting burn-off point of incinerator by processing picture
JPH01277118A (en) * 1988-04-27 1989-11-07 Nippon Cement Co Ltd Completely burning point inspection method of incinerator by image processing
AT512353A1 (en) * 2012-01-11 2013-07-15 Siemens Ag Oesterreich METHOD FOR CONTROLLING A COMBUSTION AND / OR GASING DEVICE

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