JPH0650521A - Burn-out level detecting method - Google Patents

Abstract

PURPOSE:To judge a burn-out level correctly with the same sense as recognition by the visual sense of a man. CONSTITUTION:A burn-out level is detected by a method wherein the inside of an incinerator is photographed by a color television camera 2, a color image signal, obtained from the color television camera 2, is separated into color primaries of red, green and blue colors by a color primaries separating circuit 3, the strengths of respective colors are provided with values to classify them into a plurality of preset colors with respect to the ratio of strengths of color primaries and a provided value is determined either preset color of a combustion area 9 or a non-combustion area 10 a photographed color corresponds whereby a position whereat the change of colors from the combustion area 9 to the non-combustion area 10 can be detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically detecting a burnout level on a stalker in an incinerator.

[0002]

2. Description of the Related Art In the operation of a refuse incinerator, it is an important operation factor to carry out complete incineration without leaving unburned components. In order to prevent unburning, conventionally, the inside of the furnace is directly viewed, or the inside of the furnace is imaged with a TV camera to constantly monitor the position of the burnout level so that the burnout level is always a position where no burnout occurs. I was operating. In recent years, there is a method of inputting image information obtained by imaging the inside of a furnace with a television camera to a computer to calculate the burnout level, and taking appropriate action by the operator based on the position to prevent unburned fuel. Has been done.

[0003]

However, it is difficult to perform direct visual observation of the inside of the furnace and continuous monitoring of the image inside the furnace by the television camera, and it is difficult to carry out the luminance signal and the single signal used in the image information. In the signal processing of one color wavelength, information different from the image information visually recognized by the human eye can be obtained.Therefore, when the operator performs the same operation as the visual operation based on this information, appropriate measures must be taken. There was a drawback that it was not done.

An object of the present invention is to accurately detect the burn-out level with the same feeling as human visual recognition.

[0005]

The burn-out level detecting method of the present invention is to image the inside of an incinerator with a color television camera,
A color image signal obtained from the color television camera is separated into three primary color signals of red, green, and blue by a three-primary color separation circuit, which is multi-valued with respect to the intensity of each color to obtain a ratio of the intensity of the three primary colors. On the other hand, it is classified into any of a plurality of preset colors, and it is determined which of the colors of the preset combustion area and the non-combustion area corresponds to the color change from the combustion area to the non-combustion area. It is characterized in that the position where it occurs is detected.

[0006]

According to the present invention, an image of the combustion portion in the furnace is imaged by a color television camera, and all or part of the color image signal is separated from the color image signal into three primary color signals of red, green and blue. , The color intensity of each color is multi-valued and classified into multiple colors to make the image inside the incinerator an approximate color image, and to detect the color change based on this image information. Thus, it is possible to accurately and easily detect the burn-out level, which is the boundary line between the combustion region and the non-combustion region.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is garbage 7 and grate 8
The waste incinerator to be burned above is provided with an industrial color television camera 2 on the outlet side of the waste incinerator 1, and about 1/3 of the inside of the furnace is centered on the post-combustion stalker in the furnace.
Image. The industrial color television camera 2 captures the image inside the furnace as signals of the three primary colors, synthesizes these signals, and outputs them as image signals. This image signal is an analog signal, and a color image similar to that in the furnace can be reproduced on the monitoring color television 6.

This image signal is separated into three primary color signals by the three primary color separation circuit 3, and is converted by the computer 4 into a multivalued signal corresponding to the strength of each of the three primary colors. In this conversion, for example, a signal of 256 stages is A / D converted and further converted into a multilevel signal of a desired stage. The multi-valued signal is converted into, for example, a signal of three levels of 0, 1, and 2, and the image signal is classified into any of a plurality of colors set in advance for the ratio of the strengths of the three primary colors. It is possible to use a part of the image signal at a proper interval (for example, every 8 dots) without using the entire image signal. The change in color due to the combination of the three primary colors is as shown in FIG. 3, but it is desirable that the plurality of colors adopted here take into consideration not only the difference in hue but also the difference in lightness. Is desirable.

The 16 colors are, for example, bright white, slightly dark white, gray, black, bright red, slightly dark red, bright green, slightly dark green, bright blue, slightly dark blue, bright yellow, slightly dark yellow, bright light blue, There are 16 colors: slightly dark blue, light purple, and slightly dark purple.

The three primary colors are represented by three levels of 0, 1 and 2, respectively, and when all the combinations are taken, the following 27
However, among these, clear color, gray, dark yellow,
As for dark blue and dark purple, if a plurality of combinations are included and they are expressed as one color, the above 16 colors are obtained. This color is determined in consideration of the color of the burning dust and the color perceived by the human eye. Note that it is desirable to use a color that can be displayed on a computer for determining this color.

Red Green Blue Red Green Blue Red Green Blue * 2 1 2 Clear color * 2 0 0 Bright red 0 1 1 Dark water color * 2 2 1 Clear color 1 0 0 Dark red 0 1 2 Dark water color * 2 2 2 Clear Color * 0 2 0 Light green 0 2 1 Dark light blue * 1 2 2 Dark white 0 1 0 Dark green * 0 2 2 Light light blue * 1 1 1 Gray * 0 0 2 Light blue * 2 0 2 Light purple * 1 1 2 Gray 0 0 1 Dark blue 1 0 1 Dark purple * 1 2 1 Gray * 2 2 0 Light yellow 1 0 2 Dark purple * 2 1 1 Gray 2 1 0 Dark yellow 2 0 1 Dark purple 0 0 0 Black 1 1 0 Dark yellow 1 2 0 dark yellow

In this way, the combination of the ratios of the three primary colors is stored in advance in the storage unit of the computer in association with a plurality of colors, and this is compared with the image signal,
Each of the image signals can be classified into, for example, the above 16 colors, and if necessary, converted into an analog image signal, and the image signals shown in FIG.
As shown in Fig. 1, 1 that is close to the image signal on the monitor screen 5
6 color images can be displayed. In FIG. 5, 11 is a boundary line between the burning region (flame part) 9 and the non-burning region (ash part) 10 of the dust.

The boundary line at which the burning part of the dust changes from the burning region 9 to the non-burning region 10 is the burn-out level. In this section, the above 16 colors are preset to the colors of the burning region 9 and the non-burning region 10. Setting is performed by dividing into and, and it is performed by determining which color the image signal corresponds to.

The color of the combustion region 9 is white, dark white, gray, light red, light green, light blue, light yellow among the above 16 colors.
Light blue, light purple (marked with * in the above table),
The other colors are the colors of the non-burning area 10. That is, regarding the color of the combustion region 9, one of the three primary colors is a bright color (displayed by 2 in the above-described three-step display), and the sum of the three primary colors is 4 or more in principle.

It is desirable to sequentially scan from the screen and set the position at which the combustion region 9 finally changes to the non-combustion region 10 as the burn-out level. Further, it is also possible to sequentially scan from the bottom of the screen and set the position at which the non-combustion region 10 first changes to the combustion region 9 as the burn-out level. If the first or last changed position is only one point, the burn-out level may not be set, and if it becomes two or more specific points, the burn-out level may be set. it can.

[0016]

As is apparent from the above description, the present invention divides each part in the incinerator into a plurality of colors and automatically detects the burnout level based on the colors, so that the same accuracy as visual inspection can be obtained. Can judge.

[Brief description of drawings]

FIG. 1 is a schematic diagram for explaining a burn-out level detecting method of the present invention.

FIG. 2 is a diagram showing a screen of a computer monitor in the embodiment of the present invention.

FIG. 3 is a diagram showing a relationship between three primary colors and other colors.

[Explanation of symbols]

 1 Incinerator 2 Industrial color TV camera 3 Three primary color separation circuit 4 Computer 5 Computer monitor 6 Image monitor TV 7 Garbage 8 Grate 9 Burning area 10 Non-burning area 11 Boundary line between burning and non-burning area

Claims (1)

[Claims] 1. An incinerator is imaged by a color television camera, and a color image signal obtained from the color television camera is separated into three primary color signals of red, green, and blue by a three-primary-color separation circuit. The intensity is multi-valued, and the intensity ratio of the three primary colors is classified into any one of a plurality of preset colors, and corresponds to any of the preset combustion region and non-combustion region colors. The burn-out level detecting method is characterized in that the position where the color change from the burning region to the non-burning region is detected is detected.