JPH0328617A - Incinerator combustion control method - Google Patents

Abstract

PURPOSE:To attain perfect combustion of substances to be incinerator by determining an average combustion completion point from the image of a TV camera, comparing the previous position with a target position, and selecting an operation pattern based on the fuzzy theory. CONSTITUTION:A calculation circuit 34 calculates the highest brightness position or a combustion completion point from an image signal S1 transmitted from a TV camera, and further calculates an average combustion completion position, and displays the data on each indication device 33 by way of an indication control circuit 32 respectively. Then, the calculated average combustion completion position is compared with a target position preset by a setting circuit 35 and the previously calculated position with a comparison circuit 36. Based on the result of each comparison, an operation selection signal is fuzzy-inferred with a fuzzy inference circuit 37 so that a control signal may be transmitted from a signal generation circuit 38. A supply pusher, a dry stocker, a combustion stocker, and a post combustion stocker are driven based on these operation patterns. It is, therefore, possible to attain perfect combustion of substances to be incinerated.

Description

[Detailed Description of the Invention] +1+Object of the Invention [Industrial Application Field] The present invention relates to a combustion control method for an incinerator, and in particular a method for monitoring the inside of an incinerator from the front in the direction of movement of materials to be incinerated using a television camera. The actual combustion completion position is determined from the maximum brightness position or brightness distribution curve on each scanning line of the resulting video signal that is scanned vertically at multiple points in the horizontal direction, and the determined actual combustion completion positions are averaged. The average combustion completion position is compared with a preset target combustion completion position, and the average combustion completion position is compared with the previous average combustion completion position, and the comparison result of the former or the comparison result of the former and the latter is calculated. A pattern selection signal is generated by fuzzy inference according to the pattern selection += signal, an operation pattern is selected and generated as a control signal, and the operation cycle of the supply pusher and stoker is adjusted by the control signal to control the operation inside the incinerator. The present invention relates to a combustion control method for an incinerator, in which the combustion completion position of the incinerated material in the incinerator is controlled by adjusting the supply amount of the incinerated material and the amount of movement of the incinerated material in the incinerator.

[Prior Art] Conventionally, as a combustion control method for this type of incinerator, an industrial television camera or the like is used to capture the combustion state of the material to be incinerated in the incinerator as a planar distribution of voltage signals corresponding to brightness. , the average luminance is calculated by integrating the voltage signal in an arbitrary distribution in the direction of movement of the object to be incinerated, and the brightness distribution for one screen is represented as a sequence of average brightness values distributed in the direction of movement of the object to be incinerated. By setting the point where the value or rate of change in brightness reaches the specified value as the combustion completion position,
A method for controlling combustion in an incinerator has been proposed (Japanese Patent Application Laid-Open No. 107112-1983).

[Problems to be solved] However, in the conventional combustion control method for incinerators, the point where the average brightness value or the rate of change in brightness reaches a specified value is determined as the combustion completion position. It has the disadvantage of requiring an industrial TV camera, etc., and also (
iilt! There is a drawback that the air circuit is complicated, and furthermore, (
iii) There was a drawback that the combustion completion position of the material to be incinerated could not be maintained correctly, and as a result, iv) There was a drawback that complete combustion could not be achieved. Therefore, in order to eliminate these drawbacks, the present invention averages the highest brightness position on each scanning line or the actual combustion completion position determined from the brightness distribution curve by scanning the video signal in the incinerator at multiple points. The resulting average combustion completion position and the target combustion completion position are compared with each other, and the average combustion completion position and the previous average combustion completion position are compared, and the comparison result of the former or the comparison result of the former and the latter is calculated. A pattern selection signal is generated by fuzzy inference according to the pattern selection signal, an operation pattern is selected by the pattern selection signal and generated as a control signal, and the operation cycle of the supply pusher and stoker is adjusted by the control signal. The purpose of this invention is to provide a combustion control method for an incinerator that automatically controls the combustion of materials to be incinerated.

(2) Structure of the Invention E 1,000 Steps to Solve the Problem] The solution to the problem provided by the present invention is based on an operation pattern selected from the operation patterns built into the control signal generation circuit. By driving the supply pusher and the stoker in accordance with a control signal, the material to be incinerated is supplied to the incinerator and moved within the incinerator, thereby controlling the combustion completion position of the material to be incinerated in the incinerator. In the combustion control method for an incinerator, (al)
The actual combustion completion position on each scanning line is determined from the highest brightness position on each scanning line by scanning the image monitored and imaged in the first process in the vertical direction at multiple locations. or the actual combustion completion position on each scanning line from at least one of the low-luminance area, the high-luminance area, and the transition area between the low-luminance 41 area and the high-luminance area included in the luminance distribution curve on each scanning line. (C) a third step of calculating an average combustion completion position in the incinerator by averaging the actual combustion completion positions determined in the second step; A fourth step of comparing the average combustion completion position calculated in fe) with the target combustion completion position, and a fifth step of comparing the average combustion completion position calculated in the third step with the previously calculated average combustion completion position. (f) fuzzy inference of a pattern selection signal for selecting the operation pattern of the supply pusher and stoker according to the results of comparison in the fourth step or the results of comparison in the fourth and fifth steps; (gl) By selecting an operation pattern according to the touch pattern selection signal generated in the sixth step and generating it as a control signal, the position of completion of combustion of the material to be incinerated in the incinerator is determined. and a seventh step of controlling combustion in an incinerator.

[Operation] The combustion control method for an incinerator according to the present invention includes driving a supply pusher and a stoker in accordance with a control signal whose content is an operation pattern selected from among operation patterns built into a control signal generation circuit. In a combustion control method for an incinerator, the combustion control method for an incinerator comprises controlling the combustion completion position of the incinerated material in the incinerator by supplying the incinerated material to the incinerator and moving it within the incinerator. A first step of monitoring the inside of the incinerator, and (b
) By scanning the image obtained by monitoring in the first step in the vertical direction at multiple locations, the actual combustion completion position on each scanning line is determined from the highest brightness position on each scanning line, or the actual combustion completion position on each scanning line is determined. A second method for determining the actual combustion completion position on each scanning line from at least one of the transition region between the low luminance region, the high luminance region, the low luminance n region, and the high luminance region included in the luminance distribution curve. (c) a third step of calculating the average combustion completion position in the incinerator by averaging the actual combustion completion positions determined in the second step; A fourth step of comparing the combustion completion position and the target combustion completion position, and a fifth step of comparing the average combustion completion position calculated in the third step with the previously calculated average combustion completion position. A pattern selection signal is generated by fuzzy reasoning to select the operation pattern of the supply pusher and the stoker according to the results of the comparison in the fourth step or the results of the comparison in the fourth and fifth steps. Step 6 and a seventh step of controlling the combustion completion position of the material to be incinerated in the incinerator by selecting an operation pattern according to the pattern selection signal generated in the sixth step of IgJ and generating it as a control signal. Fi) It has the function of automatically controlling the combustion completion position of the incinerated material in the incinerator, and furthermore, the function of achieving complete combustion of the incinerated material. This also serves to reduce the need for high-sensitivity television cameras or complicated electrical circuits.

[Example] Next, the method for controlling combustion in an incinerator according to the present invention will be specifically explained by citing preferred examples thereof. However, the examples described below are described to facilitate or accelerate understanding of the present invention, and are not described to limit the present invention. In other words,
Each member disclosed in the examples described below is
This invention includes all design changes and equivalent substitutions that fall within the spirit and technical scope of the invention. FIG. 1 is a cross-sectional view showing a part of an incinerator in which combustion control is performed according to an embodiment of the incinerator combustion control method according to the present invention.

FIG. 2 is a block circuit diagram showing a control circuit for executing combustion control of the incinerator shown in FIG. 1 according to an embodiment of the present invention.

FIG. 3 is a first operational diagram for explaining the operation of the block circuit diagram shown in FIG. 2. FIG.

FIG. 4 is a second operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG. 2.

FIG. 5 is a third operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG. 2.

FIG. 6 (at to (cl) is a fourth operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG. 2,
In each case, the average combustion completion position P is the target combustion completion position Q.
The number of memberships of a triangle created corresponding to the positional relationship f. A fuzzy set F consisting of ~, fs, and a triangular membership function g++~+gs created corresponding to the positional relationship that the current average combustion completion position P has with the previous average combustion completion position P0. A fuzzy set G and a fuzzy set H consisting of triangular membership functions hl, ~, hs created in response to changing the operation patterns of the supply pusher and the stoker are exemplarily shown. FIG. 7 (at~+dl is a fifth operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG. 2,
Figure 6 (al~(cl) fuzzy sets F, G, H
This example shows how to use fuzzy inference to change the operation pattern of the supply pusher and stoker. FIG. 8 is a sixth operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG. membership function h+, ~, ha
The fuzzy set H consisting of is illustratively shown. First, with reference to FIGS. 1 to 5, an embodiment of the combustion control method for an incinerator according to the present invention will be described in detail while explaining the configuration of an apparatus for carrying out the method. 1O is an incinerator in which combustion control is executed by the combustion control method according to the present invention, in which the supply pusher IIA is intermittently directed in eight arrow directions by a drive device 11B such as a hydraulic cylinder in accordance with a control signal S6 to be described later. While driving, the material to be incinerated (for example, garbage; this case will be described below) l2 supplied in the direction of arrow B via the supply path l1 is caused to fall and be supplied onto the drying stoker l3.

The drying stoker 13 has a movable element 13B with respect to a stator 13A.
is intermittently operated in the direction of arrow C by a drive device l4 such as a hydraulic cylinder in accordance with a control signal S, which will be described later, thereby drying the dust l2 and burning the combustion gas l5.
Move it as shown by arrow K toward . In the combustion stoker 15, the movable element 15B is intermittently operated with respect to the stator 15A in the direction of arrow D according to a control signal S6, which will be described later, by a drive device l6 such as a hydraulic cylinder, thereby performing after-combustion while burning the waste l2. Move it towards Stalker 17.

The after-combustion stoker 17 is connected to the movable element 17 with respect to the stator 17A.
B is intermittently operated in the direction of arrow E by a drive device l8 such as a hydraulic cylinder in accordance with a control signal S6, which will be described later.
After the ash that was not burned up above is completely burned, it is moved toward the ash fall port 19. The ash that has reached the ash drop port l9 is dropped in the direction of arrow F and is processed by a subsequent ash processing device (not shown).

20. ~, 22 are under-furnace chutes, which are disposed directly below the drying stoker 13, the combustion stoker 15, and the after-combustion stoker 17, and collect the ash that has fallen from the drying stoker 13, the combustion stoker 15, and the after-combustion stoker 17. The ash is collected and sent out in the directions of arrows G, H, and I, respectively, and supplied to a subsequent ash processing device (not shown). 20A, . . . , 22A are combustion air supply ports, and are connected to the under-furnace chute 20. ~, 22, and supplies an appropriate amount of combustion air from a combustion air supply source (not shown) to the under-furnace chute 20, ~, 22, and in turn, the drying stoker 13 and the combustion stoker l5. and the waste 12 on the after-combustion stoker 17.

Reference numeral 23 denotes an exhaust gas guide passage, which is opened above the drying stoker l3 of the incinerator lO.
The exhaust gas generated by combustion of the waste 12 on the post-combustion stoker 17 is guided in the direction of arrow J. A burner device 25 is arranged near the after-combustion stoker 17, and ignites the waste 12 supplied onto the drying stoker 13 or the after-combustion stoker 17 when the incinerator 1O is started. A control circuit for controlling the combustion of the incinerator (1) monitors the inside of the incinerator from the opposite side of the supply path (for example, the inclined furnace wall located above the after-combustion stoker I7). It includes a 3L television camera. The television camera 3l is connected to a display control circuit 32 as desired, and the monitored content (ie, video signal S.) is displayed on a display device 33. 34 is a combustion completion position calculation circuit connected to the television camera 3l, which analyzes the video signal S1 given from the television camera 3l to calculate the position of the combustion completion point (that is, the combustion completion position) P. The calculation of the combustion completion position P in the combustion completion position calculation circuit 34 is executed, for example, in the following manner. In other words, the combustion completion position calculation circuit 34
While using the SI, the field of view of the television camera 3l is scanned vertically at multiple locations (eight locations for convenience) at predetermined intervals, and each scanning line L+. ~． After selecting the maximum brightness position on L8, the actual combustion completion position P is determined by subtracting a predetermined value determined in advance through a trial run.
1~. P, and this is the signal S. The combustion completion position calculation circuit 34 similarly outputs the image No. 8 S.
, within the field of view of the TV camera 3L? Scanning is performed in the vertical direction at a plurality of locations (here, 8 locations for convenience) at regular intervals, and each scan}J+t. ．． +. ~, L. Obtain the brightness distribution curves I1~, Is for the area, and calculate its low brightness region (i.e. combustion completed region and eventually ash region), high brightness region (i.e. combustion region and eventually flame region), and transition region between the low brightness region and the high brightness region. From at least 61 of them, the actual combustion completion positions P, . . . P. is calculated and output as a signal S1. Specifically, the combustion completion position calculation circuit 34 calculates the scanning lines I, 1 . ~． L, upper distance 11
A brightness distribution curve I, which shows the relationship between 1fl and brightness I,
~,I. shape (see Figure 4; x = 1.~.8
), (Ll low luminance region IXL to transition region Ix
The point at which the transition to t (that is, the rising point PXL) is defined as the actual combustion completion position P, . P6 or fi
The point of transition from the high-intensity region I to the transition region IXT (
In other words, the falling point p. ．． ) as the actual combustion completion position P
1. ~, P6, or fiii) Transition region I. The inflection point Px■ existing at T is the actual combustion completion position P+, ~, p. Alternatively, (the intersection PLT of the asymptote xL of the ivl low luminance region IXL and the tangent xT at the inflection point PXT existing in the transition region IXT is calculated as the actual combustion completion position P1, ~.P. Alternatively, the intersection point PHT of the asymptotic!
l Bisector point of both intersections P LT + P HT ( P LT
+ P H7) / 2 as the actual combustion completion position p, ~,
Pa, and (vii) These calculation results P
XL. PXH. PMT. PLT. PHT.
(PLT+PHT)/2 is corrected by adding or subtracting a predetermined value predetermined by a trial run to obtain the actual combustion completion position fl P + , ~, P. and output these as signals SI. The signal S1 is given to the display control circuit 32 as desired, and indicates the actual combustion completion positions P1 to . Pa
is each scan ML, . ~． L. display device 33 for each
is displayed as ゜゛X'' on the surface 33^ (see Figure 3).
．． In addition, the combustion completion position calculation circuit 34 outputs the signal S? The actual combustion completion position P. ~, Pa is averaged to calculate an average combustion completion position P, and output as another signal S2.
The redemption code S2 is the signal S! Similarly to ``, it is given to the display control circuit 32 as desired, and the average combustion completion position P, which is the content thereof, is displayed by a broken line on the display surface 33A of the display device 33 (see FIG. 3).

By the way, the "averaging" operation for calculating the average combustion completion position P is not particularly limited, so for example (distance between it combustion completion position P+.~P. and the target combustion completion position Q) After adding all of the above, the combustion completion position Pl
＋〜． An averaging operation in which the average value obtained by dividing by the total number of P6 is set as the average combustion completion position P, (ii) combustion completion position f! !
P + , ~, P. After removing the maximum and minimum distances between the distances Q and the target combustion completion position Q, the average value obtained by operating the above fil term is defined as the average combustion completion position i1! Averaging operation with P, (iii combustion completion position P
．． ~, an averaging operation in which the average value obtained by selecting the intermediate distance between P6 and the target combustion completion position Q is set as the average combustion completion position P; (iv) combustion completion position Pl. ~,
An averaging operation in which the average value obtained by applying a predetermined weight to the distance between P8 and the target combustion completion position Q and then aggregating the above fil term is set as the average combustion completion position P, or H combustion completion Position P1. ~． The average value obtained by calculating the center of gravity of the area surrounded by the line segment connecting P8 sequentially and the straight line indicating the target combustion completion position Q is the average combustion completion position P.
It is sufficient to use an averaging operation adopted as desired from well-known averaging operations such as the averaging operation for Reference numeral 35 denotes a setting circuit for setting a target combustion completion position Q within the incinerator wearout, and outputs the set target combustion completion position Q as a signal S. The signal S, can be sent to the display control circuit 3 as desired.
2 is given, and the content is the target combustion completion rank! t
Q is displayed as a solid line on the display surface 33A of the display device 33 (see FIG. 3). 36 is a combustion completion position calculation circuit 34 and a setting circuit 35
A comparison circuit connected to the signal S, compares the signal S, and the signal S8, and determines that the average combustion completion position P, which is the content of the signal S, is at a predetermined position with respect to the target combustion completion position Q, which is the content of the signal S, It is determined whether there is a relationship and output as a comparison signal S4. Here, the predetermined positional relationship means that the average combustion completion position P is greatly separated from the target completion position Q, for example, on the negative side (here, upper millimeter; the same applies hereinafter) (see "a" in Fig. 5). "exist", "exist a little apart on the negative side (see "b" and "d" in Figure 5)", or "almost coincident (see "e to h" in Figure 5)"゜゜, or there is a large distance on the “positive side (lower side here; the same applies hereafter)”
Positional relationships made using fuzzy expressions such as ``existing with a slight distance on the positive side (see ``i''``j'' in Figure 5)'' (see ``b'' in Figure 5) In addition, the comparison circuit 36 determines whether the current average combustion completion position P1 is in a predetermined positional relationship with the average combustion start position Pa of the interval, and outputs another comparison signal S4.・The predetermined positional relationship is the current average combustion completion position 1ff.
ip, from the previous average combustion completion position P0, for example,
“A large shift toward the negative direction (i.e. upward) (“C” in Figure 5)
(refer to), "moved a little to the negative side (see ゜゜d"g"h" in Figure 5), "almost no change", "below the positive side" Fuzzy expressions such as "moving slightly to the positive side (see "f" and "J" in Figure 5)" or "moving significantly to the positive side (see "e" and "i" in Figure 5)" (This case will be explained below). 37 is a fuzzy inference circuit connected to the comparison circuit 36, which outputs the comparison signal s4. The supply pusher IIA and the stokers (i.e., the drying stoker I3, the combustion stoker It outputs a pattern selection signal S for selecting the operation pattern (that is, the stoker control pattern l PT ) of the stoker 15 and the post-combustion stoker 17).

That is, the fuzzy inference circuit 37 uses the comparison signal S4. S4
According to the contents of , the fuzzy rule Rll in Table 1
A related one is selected from "a" to "j", fuzzy inference is executed as described later, and the result is outputted as a pattern selection signal Ss. 38 is a control signal generation circuit connected to the fuzzy inference circuit 37. The fuzzy inference circuit 37 selects a suitable operation pattern from several built-in operation patterns PT according to the contents of the generated pattern selection signal S, and selects a control compensation signal S. As for the drive unit 11B of the supply pusher IIA, the drive unit 16 of the drying stoker l5, and the drive unit of the afterburning stoker l7 i! ! 18. Therefore, the control signal S6 is the pattern selection signal S. In Table 2, the content is a new operation pattern obtained by changing the number of operation pattern PT, and the supply pusher IIA and the stoker (i.e. drying stoker 13, combustion stoker 15 and after-combustion stoker 17) ), in other words, the content of changing the operation cycle of the supply pusher IIA and the stoker (i.e. drying stoker 13, combustion stoker 15 and after-combustion stoker !71)
It has the content of changing the number of strokes per operation reference time. For this reason, the drive devices 11B14, 16.
18 is a control signal S. Depending on the content of the supply pusher II
The number of strokes per operation standard time of A, the drying stoker 1, the first force 13, the combustion stoker 15, and the after-combustion stoker 17 is changed.

The combustion completion position P of the garbage 12 is thereby changed so as to approach the target combustion completion position ffQ.

15 tablespoons of milk, 2 h5, and further referring to Figures 1 to 7 fa) to (c),
An embodiment of the combustion control method for an incinerator according to the present invention will be described in detail while explaining the operation of the apparatus for carrying out the method. +) Number of strokes per operation reference time The drying stoker 13, combustion stoker 15, and after-combustion stoker 17 of the incinerator are controlled by the drive device 14, respectively, according to the control signal S6.
, 16. 18, the supply pusher 11A is operated intermittently in the directions of arrows C, D, and E by the control signal S.18. By intermittent operation in the direction of the arrow 8 according to the arrow B, the garbage) 12 is fed into the incinerator from the supply 'i8ll as shown by the arrow B. In conjunction with this, a combustion air supply device (not shown) is connected to the combustion air supply port 20A. ~, incinerator l via 22A etc.
Start supplying an appropriate amount of air into the O. When the garbage 12 is moved in the direction of arrow K on the drying stoker 13 and the combustion stoker 15 and reaches a predetermined position,
The garbage 12 is ignited by the burner device 25. The garbage 12 starts to burn and mainly becomes a combustion stoker.
Continue burning on 5. By the way, the garbage 12 is also burned on the drying stoker 13, and the after-burning stoker 17
It's burning above. The exhaust gas generated by the combustion of the garbage 12 on the drying stoker 13, the combustion stoker 15, or the post-combustion stoker 17 flows through the exhaust gas guide passage 23.
is guided in the direction of arrow J through the dust collector (not shown).
After being processed, etc., it is discharged outside the incinerator.

On the other hand, the ash generated by the combustion of the garbage 12 on the drying stoker 13, the combustion stoker 15, or the post-combustion stoker 17 is deposited at the ash fall port 19 as shown by the arrow F.
be dropped against.

The combustion of the garbage 12 in the incinerator IO is monitored by a television camera 3l, and the monitoring results, that is, the contents of the video code S1, are displayed on the display surface 33A of the display device 33 via the display control circuit 32 as desired. (3rd
(see figure). That is, on the display surface 33A of the display device 33, the flame 26 inside the incinerator is displayed as desired.

Incidentally, on the display surface 33A of the display device 33, if there are flames 26 of the same brightness within the field of view of the television camera 3l, the closer they are, the higher the brightness will be displayed. Video of the monitoring results of TV camera 31 (21 'IW No.S
is given to the combustion completion position calculation circuit 34, and is used to scan the incinerator in the vertical direction. That is, the combustion completion position fW calculating circuit 34 calculates the scanning line L+.
~, Ls, and then subtracting a predetermined value determined in advance through a trial run from the highest brightness position to determine the actual combustion completion position P1~. Pa
is determined and output as a signal S2I.

Further, the combustion completion position calculation circuit 34 similarly calculates the scanning lines L1 to 8 located at a plurality of positions at predetermined intervals, for example, eight positions at equal intervals.
, Ls on the brightness distribution curve I. ~I. Find the low brightness region (i.e. combustion completed region and ash ftJl region),
Actual combustion completion positions P, . ~．
P8 is calculated, and this is the signal S? Output as . Specifically, the combustion completion position calculation circuit 34 calculates the scanning lines L1 to L1 to
L. A brightness distribution curve h. ~． The shape of Is (see Figure 4; x=1,
~, 8), calculate the point (i.e. rising point PXL) from the (il low brightness region IXL to the transition region IX?) as the actual combustion completion position P1~.P., or (
ii) A point that transitions from the high-intensity region Ie to the transition region IXT {that is, a falling point p. ．． ) is calculated as the actual combustion completion position P1~, Pa, or (iii transition region r
Inflection point p existing at xt xt is the actual combustion completion position P
．． ~． P. or fiv) low brightness area ■x
Asymptote XL of L and transition region tlN. Inflection point P that exists in ■
The intersection point PLT of xy with the tangent line XT is the actual combustion completion position P1~. Calculate Pa or tvt high brightness area b
The intersection point PH7 between the asymptotic cotton xH of liIXD and the tangent X at the inflection point PxT existing in the transition region 1xt is defined as the actual combustion completion position P. ~． P6 or fvi) Bisector point of both intersections P LT + P HT (pL a + P . .
)/2 as the actual combustion completion position P1~. P. or (vtil These calculation results P XLI P
XHI P XT+PLT. P'ry. (P
L? + Pht) / 2 is corrected by adding or subtracting a predetermined value determined in advance through a trial run to determine the actual combustion completion position P1~. P, and output these as signals SI. The content of the signal S1°, that is, the actual combustion completion position P. ~． If desired, Pa is displayed as an "X" on the display surface 33A of the display device 33 via the display control circuit 32 (see FIG. 3). In addition, the combustion completion position calculation circuit 34 calculates the actual combustion completion position P1. ~, P. is averaged to calculate the average combustion completion position P, which is then used as the signal S. Bind and output. That is, the combustion completion position calculation circuit 34 calculates the position of the combustion completion position S. The actual combustion completion position P1, which is the content of °. P. are sequentially stored by the above-mentioned appropriate averaging operation, and when the scanning of the scanning lines L1 to Ls is completed, the average combustion completion position P is calculated by averaging, and the signal S. Close and output. The content of the signal S8, that is, the average combustion completion position P can be determined by the display control circuit 3 as desired.
2 on the display surface 33A of the display device 33 (see FIG. 3). The setting circuit 35 outputs a target combustion completion position Q, which is stored in advance as a desired combustion completion position in the incinerator lO, by a signal S.
, is output as . The content of No. 8 Ss, that is, the target combustion completion position Q, is displayed as seed on the display surface 33A of the display device 33 by the display control circuit 32 as desired (see FIG. 3). Signal Sz. Ss is provided to the comparison circuit 36 and is used to compare the average combustion completion position P and the target combustion completion position Q. That is, the comparison circuit 36, on the display surface 33A of the display device 33,
For example, if the average combustion completion position P is "largely spaced apart on the negative side (that is, upward) (see "a" in Figure 5)" or "slightly spaced away on the negative side (see "a" in Figure 5)"
(see “b” and “d” in the figure), “almost coincident (see “e” to “h” in Figure 5), or “largely spaced on the positive side (i.e., lower measurement)” (see “e” to “h” in Figure 5). (see "b" in the figure)" or "slightly spaced to the positive side (see "1" in figure 5).
It is determined whether ""j')" is performed and output as a comparison signal S4.

In other words, the comparison signal S, indicates that the average combustion completion position P is higher than the target combustion completion position flIQ in the moving direction of the dust l2,
``A big retreat (see ``'a'' in Figure 5! (See “e” to “h” in the diagram)
“Are you doing it? Great progress (see “b” in Figure 5)”
or moving forward a little (゜゛i in Figure 5)
j″)”. In addition, the comparison circuit 36 compares the current average combustion completion position P+ or the intertemporal 10-yen combustion completion position Pa with, for example, the
In other words, it moves significantly toward the negative side (see “C” in Figure 5).”
``Move a little upwards (゛d'' g in Figure 5)
``h'')'', ``almost no change'', or ``moved significantly downward (i.e., positive side)'' (see ``e'' in Figure 5).
(See “i”)” or “moved a little to the lower measurement (see “f” “j” in Figure 5)”.
Output as comparison signal S4'. Comparison signal s. , s. ” is the fuzzy inference circuit 37
is given to S, and is used to generate the pattern selection signal S,. That is, the fuzzy inference circuit 37 receives the comparison signal s. , s. ” is as shown in the condition section of Table 1 corresponding to FIG.
, the combustion stoker l5, and the post-combustion stoker 17), fuzzy inference is executed in the manner described below in order to generate a pattern selection signal S1 for changing the operation pattern PT of the combustion stoker 15 and the post-combustion stoker 17). The fuzzy inference result is output as a pattern selection signal S6 and is applied to the control signal generation circuit 38. The control m signal generation circuit 38 selects the currently selected operation pattern PT. according to the content of the pattern selection signal S6. For example, ゛'
8'i to new operation pattern PTI (for example "l"
) to change the operation pattern PT. Control signal generation circuit 3
8 generates a control compensation signal S6 according to the selected new operation pattern PT, and drives the drive device 1 of the supply pusher 11^.
1B and dry stoker l3 drive system i! i14, the drive unit l6 of the combustion stoker l5, and the drive unit 18 of the afterburning stoker l7. Drive devices 11B, 14, 16. 18 is operated according to the content of the control signal S6, and the supply pusher l.
The operation pattern PT f of the IA, drying stoker l3, combustion stoker l5, and post-combustion stoker l7 (and thus the number of strokes per operation reference time) is changed, and the operation cycle is adjusted. Therefore, the combustion completion position P of the dust 12 is changed so as to approach the target combustion completion position Q, or more precisely, to approach the vicinity of the Megura combustion completion position Q [Q-Δ, Q+Δ1]. Here, △ indicates small detachment.

By repeating the above operations, the average combustion completion position P in the incinerator 10 can be substantially maintained at the target combustion completion position flIQ, and as a result, the garbage 12 can be substantially moved to the desired target position in the incinerator IO. Stable combustion can be achieved at the combustion completion position Q. In addition, Figures 1 to 7f
In order to further deepen the understanding of the embodiment of the combustion control method for an incinerator according to the present invention, we will add details regarding the fuzzy inference in particular, with reference to al~(c). A comparison signal S. ．． S. When ° is given, the fuzzy inference circuit 37 calculates a fuzzy set F regarding the relationship between the current average combustion completion position P1 and the target combustion completion position Q (i.e., a fuzzy set regarding the comparison signal S), and the current average combustion completion position Using a fuzzy set G regarding the relationship between P1 and the previous average combustion completion position P0 (that is, a fuzzy set regarding the comparison signal S4°) and a fuzzy set H regarding changes in the operating pattern PT, fuzzy inference is executed as follows, for example. be done.

The fuzzy set F indicates whether the average combustion completion position P is "largely away from the target combustion completion position Q" toward the negative side (see "a" in Figure 5), or "slightly away from the negative side (see Figure 5"). “b”
(refer to “d”) or “nearly match” (see “e” in Figure 5).
(see "~"h)" or "slightly away from the positive side (
Triangles are created corresponding to whether the triangles are extending (see "i" ゜ "j" in Figure 5) or are "separated greatly to the positive side (see 'b" in Figure 5). The fuzzy set G contains the membership functions f+, ~, fs.
(See "C" in Figure 5)" 5 "Moved a little to the negative side (see "d", "g" and "h' in Figure 5)", or "Almost no change", or "Positive side" Move a little further to (
(see "f゜゜゛j" in Figure 5) 7 or has moved significantly to the correct measurement (see "e"゛1 in Figure 5)
Membership functions g1 of the triangles created corresponding to the positions of the triangles. ~, gi.

The fuzzy set H is the number of the operation pattern PT of the supply pusher IIA and the stoker (i.e., the drying stoker 13, the combustion stoker 15, and the after-combustion stoker 17+).
Do you want to “decrease a lot” or “decrease a little”?
Leave it unchanged, increase it a little, or
The triangular membership number h1~.!] is created in response to a large increase in the number of triangular memberships.

Since it would be very complicated to generalize and explain fuzzy inference, we will explain here that the previous average combustion completion position P0 is -1.2 m from the target combustion completion position Q, and this time The average combustion completion position P1 is from the target combustion completion position Q to -I. Let us consider the case where the distance is 8 m.
I will explain this.

The fuzzy intervals involved at this time are shown in Figure 6fa)(b+
As is clear from Table 1, since ``a'', ``c'' and ゜d'' are shown in Table 1, the fuzzy inference circuit 37 performs the inference operation as follows.

Regarding the fuzzy rule "a", the fuzzy inference circuit 37 (i) As is clear from the condition part of Table 1, in the fuzzy set F of FIG.
corresponds, so the current average combustion completion position P l ( =
−1.8 m ), and then calculate the function value f for (i
As is clear from the conclusion part of Table I, Figure 6 (C)
Since the membership function h1 corresponds to the fuzzy set H of the function value f. For the function value h++(=Lt
) is calculated.

Fuzzy reasoning episode i again! 11137 is fuzzy rule C
”, [i) Is it clear from the condition part of Table 1?
Since the membership function f2 corresponds to the fuzzy set F of Fig. 6 Cal, the current average combustion completion position @ P
+ (= 1.8 m), the function value f■
(11) As is clear from the condition part of Table 1, the membership function g2 corresponds to the fuzzy set G in Figure 6 fb), so the previous average combustion completion position Pa (= 1.2 m ) to the current average combustion completion position Pi (=-1.8m) △P(=-0.6
Calculate the function value g++ for m), and further [jii) As is clear from the conclusion part of Table 1, the membership function hs corresponds to the fuzzy set H in Figure 6 (cl), and the function value g+J : Since the function value f. is small, the function fah..* (= t'
! ．． ) is calculated. Furthermore, regarding the fuzzy rule "d", the fuzzy inference circuit 37 (1) As is clear from the condition part of Table I, the membership function f2 corresponds to the fuzzy set F in FIG. Function value f for average combustion completion position P+ (= 1.8rr+). (11) As is clear from the condition part of Table 1, since the membership number g2 corresponds to the fuzzy set G in FIG. 6(b), the previous average combustion completion position P. Calculate the current average combustion completion position P+ (= 1.8m) from (=-1..2m), and further fi
iii As is clear from the conclusion part of Table 1, Figure 6 fc
) in the fuzzy set H of me? Since the function value ga+ is larger than the function value f2N, the function value h■ (=f■) is calculated for the function value f2■.

Therefore, the fuzzy inference circuit 37 calculates the fuzzy set 1I
Regarding the membership function h++'' as shown in (Figure 7a) where the height of the membership function h1 is replaced by h. according to the function value h. found for the fuzzy rule H11''a''. Figure 7(b) shows that the height of the membership function 1h+ is changed to h+z according to the function value hrz obtained for the (l1) fuzzy rule "C".
Create a membership function h + 2'' as shown in
In addition, create a membership function h2゜ as shown in Figure 7(b) by replacing the height of the membership number h2 with h■ according to the function value h found for the fuzzy rule "d" (iii). After that, the membership functions h 1 1”, h + as shown by diagonal lines in Fig. 7(c)
z'. The center of gravity M is calculated for the area surrounded by the champion of "h a".The fuzzy inference circuit 37 calculates the abscissa of the center of gravity M as -6.75, and then rounds it to -6.75.
7 and convert it into an integer, and use this as the amount of change in the operating pattern PT.
(In other words, the change value of the operating pattern PT number; absolute value)
Infer N.

The change amount N=-7 of the operating pattern PT is outputted from the fuzzy inference circuit 37 as a pattern selection signal S8, and
It is applied to the signal generation circuit 38 and is used to generate the control signal S6. That is, the control signal generation circuit 38 selects the currently selected operation pattern PTo (for example, "8") according to the content of the pattern selection signal S,
) to create a new operation pattern PT. (for example, "l"). The control signal generation circuit 38 generates the selected new operation pattern PT. generates control signal S6 in response to supply pusher IIA and stoker
(Drying stoker 13, combustion stoker! 5 and after-combustion stoker 171 drive device 1lb. 14, 16. 1
8 as described above, the number of strokes per operation reference time is changed. Although the above description has been made regarding the case where the display control circuit 32 and the display circuit 33 are provided, the present invention is not limited to this, but also applies to the case where these circuits are removed. It also includes. Furthermore, although the shapes of the membership functions of the fuzzy sets F, G, and H are all triangular in shape, the present invention is not limited to this;
! ii. It also includes cases where the shape is a desired shape such as a rate density distribution curve shape. Furthermore, although the case where there are five membership functions belonging to a fuzzy set has been described, the present invention is not limited to this, and an appropriate number may be selected as desired.

Furthermore, although a case has been described in which fuzzy inference is executed by the maximum-minimum (MAX-νIN) method, the present invention is not limited to this, and can be performed using the direct product method, flff
It also includes cases where it is executed by a desired inference method such as the boundary product method or the intense product method.

In addition, a fuzzy set H is prepared for the amount of change (absolute value) N of the operating pattern PT (see FIG. 6 (cl) and Table 2), but the present invention is not limited to this. As shown in Fig. 8, a fuzzy set H consisting of triangular membership functions h1, . This also includes the case where the operating pattern PT to be changed is determined using Table 3 when N is obtained.Incidentally, Table 3 may be created separately based on the operating experience of the incinerator.

In addition, the 15 types of operation patterns PT, ~PT+s shown in Table 2 as operation patterns PT are used in the control signal generation circuit 38.
Although only the case where it is built in has been described, the present invention
The present invention is not limited to this, and includes the case where another type of operation pattern is built into the control signal generation circuit 38. In addition, the present invention provides an operating pattern PT as shown in FIG.
Change It (relative value eg percentage) of fuzzy set H with respect to N 1! Prepare and use fuzzy reasoning
C change! (Relative value) When N is obtained, the operation pattern PT to be changed is calculated by multiplying the total number of operation patterns PT in a decreasing direction or an increasing direction. Specifically, the present invention is based on the membership function h shown in FIG.
+. ~． Using hs, perform fuzzy inference according to the procedure shown in Figure 7(a) to fdl, and set the amount of change to -67.
．． After calculating 5%, the currently selected operation pattern PT. f, for example, "8") and the operation pattern with the lowest number (here, "1") is regarded as -1.00%, and a new operation pattern PT.f corresponding to the change amount -67.5% is created. 8 + (8-1) X -0.675 = 8 -4.7
25=3. This also includes the case where 275 = 3 is calculated. Issuing an alarm without changing the operating pattern (3)
) Effects of the Invention As is clear from the above, the combustion control method for an incinerator according to the present invention supplies a control signal according to an operation pattern selected from among the operation patterns built into the control signal generation circuit. An incinerator that controls the combustion completion position of the incinerated material in the incinerator by driving the pusher and the stoker to supply the incinerated material to the incinerator and move it within the incinerator. In the combustion control method, fa) a first step of monitoring the inside of the incinerator with a television camera, and (b) scanning the images obtained by monitoring in the first step in the vertical direction at multiple locations, Determine the actual combustion completion position from the maximum brightness position on each scanning line, or between the low brightness area and high brightness area included in the brightness distribution curve on each scanning line, and between the low brightness area and the high brightness area. a second step of determining the actual combustion completion position on each scanning line from at least one of the transition regions; a third step of calculating the average combustion completion position; a 44th/) step of comparing the average combustion completion position calculated in the fdl third step with the target combustion completion position; and a 44th/) step of comparing the average combustion completion position calculated in the fdl third step; a fifth step of comparing the combustion completion position and the previously calculated average combustion completion position, and if) supply according to the comparison results in the fourth step or the comparison results in the fourth and fifth steps; a sixth step of generating a butterfly selection signal for selecting an operation pattern of the pusher and the stoker by fuzzy reasoning, and (f + selecting an operation pattern according to the pattern selection signal generated in the sixth step) and a seventh step of controlling the combustion completion position of the incineration material in the incinerator by causing the combustion of the incineration material to occur as follows. It has the effect of being able to control automatically, and in turn, it has the effect of achieving (if) complete combustion of the material to be incinerated, and also has the effect of reducing the need for highly sensitive television cameras or complicated electric circuits.

The second operation explanatory diagram, FIG. 5, is the third operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG.
Figures (al~tel are the fourth operation explanatory diagrams for explaining the operation of the block circuit diagram shown in Figure 2, Figure 7 (al~tel)
(d) is a fifth operation explanatory diagram for explaining the operation of the block circuit diagram 2 shown in FIG. 2, and FIG. 8 is a sixth operation explanatory diagram for explaining the operation of the block circuit diagram shown in FIG. FIG.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a part of an incinerator in which combustion control is executed by an embodiment of the combustion control method for an incinerator according to the present invention, and FIG. 3 is a block circuit diagram showing a control circuit for executing combustion control of the incinerator shown in FIG. The figure is used to explain the operation of the block circuit diagram shown in Figure 2.
・・・・・・・・・・・・・・・・Supply path 11A...
・・・・・・・・・・・・Supply pusher l2・・・・・・
・・・・・・・・・・Garbage l3・・・・・・・・・・・・・
...Dry stoker 14, 16. 18...
・・・・・・Drive device l5・・・・・・・・・・・・・・・
・・・Combustion stoker 17・・・・・・・・・・・・・・・
・・Post-combustion stoker l9・・・・・・・・・・・・・・
・・Ash fall port 20, 21. 22・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・KD be under-furnace chute 20</i>A, 21 “A”, 22A (“combustion air supply port 23”)”” (3)” ...Exhaust gas guide passage 25...Burner device 26...Flame 3...・・・・・・・・・・・・・・・Control circuit 3l・
・・・・・・・・・・・・・・・TV camera 32...
......Display control circuit 33...
......Display device 33A...
・・・・・・Display surface 34・・・・・・・・・・・・
... Combustion completion position calculation circuit 35 ...
......Setting circuit 36...
... Comparison circuit 37 ...... Fuzzy inference circuit 38 ......
Control signal generation circuit Fig. 4 -10 -5 0 +5 +10 Fig. 8 -6.75

Claims (1)

[Claims] The material to be incinerated is delivered to the incinerator by driving the supply pusher and the stoker in accordance with a control signal whose content is an operation pattern selected from among the operation patterns built into the control signal generation circuit. In the combustion control method for an incinerator, the combustion control method for an incinerator comprises controlling the combustion completion position of the incineration material in the incinerator by supplying the material and moving it within the incinerator, comprising: (a) a first method of monitoring the inside of the incinerator with a television camera; (b) By scanning the image obtained by monitoring in the first step in the vertical direction at multiple locations, the actual combustion completion position on each scanning line is determined from the highest brightness position on each scanning line. Or, the actual combustion completion position on each scanning line is determined from at least one of the low-intensity area, the high-intensity area, and the transition area between the low-intensity area and the high-intensity area included in the brightness distribution curve on each scanning line. (c) a third step of calculating an average combustion completion position in the incinerator by averaging the actual combustion completion positions determined in the second step; (d) a third A fourth step of comparing the average combustion completion position calculated in the process with the target combustion completion position, and (e) comparing the average combustion completion position calculated in the third process with the previously calculated average combustion completion position. (f) a pattern selection signal for selecting the operation pattern of the supply pusher and the stoker according to the results of comparison in the fourth step or the results of comparison in the fourth and fifth steps; (g) Selecting an operation pattern according to the pattern selection signal generated in the sixth step and generating it as a control signal to control the combustion of the incinerated material in the incinerator. A combustion control method for an incinerator, comprising a seventh step of controlling a completion position.