JPH10115095A - Washing method for aluminum temporary scaffolding board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing method through which the dirtiness of an aluminum temporary scaffolding board is comprehended one by one and a washing work can be rationally carried out according to the dirtiness. SOLUTION: In a washing method for an aluminum temporary scaffolding board 1, the image of an aluminum temporary scaffolding board 1 photographed with a videocamera takes in an image input section 21, and its binary processing is carried out by a personal computer 22 to extract the part of a hole 3 from the whole of the scaffolding board 1 for computing the area of the part of the hole 3, and concerning a part except the hole 3, the binary processing is carried out by the personal computer 22 to extract a dirty part for computing the area of the dirty part. Thus, the area of the hole part, the area of the dirty part and the total area of the image which are computed in the above way are used to compute the extent of the dirtiness of the temporary scaffolding board, and the carry speed of a roller conveyer 4 is adjusted according to the computed degree of the dirtiness so that the feed speed of the scaffolding board 1 passing through under a washing nozzle 30 may be slower in proportion to the extent of the dirtiness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cleaning an aluminum temporary scaffold plate for rationally cleaning an aluminum temporary scaffold plate according to the degree of contamination.

[0002]

2. Description of the Related Art Generally, a scaffold is assembled at a construction site or the like as a passage for construction or a temporary floor for work.

Conventionally, a so-called aluminum temporary scaffold made of an aluminum alloy is often used as a temporary scaffold used for a work floor of the scaffold for the purpose of reuse. That is,
The aluminum temporary scaffold, which is a temporary equipment used once, is removed from the concrete and then used at the next site. However, if the concrete adhering to the scaffold is not sufficiently removed, a washing operation for removing the concrete must be performed.

Conventionally, for this cleaning operation, a cleaning device that performs cleaning by a water jet while feeding an aluminum temporary scaffold plate has been used, and the feeding speed of the scaffold plate at that time can be adjusted in two stages. I have. According to this cleaning device, the cleaning operation can be automated, and a large amount of scaffold plates can be cleaned and mass-controlled.

[0005]

However, the temporary aluminum scaffolds have different amounts of dirt and deposits. In the conventional cleaning device, the feed speed of the scaffold plate at the time of cleaning can be adjusted in two stages, but the scaffold plate cannot be cleaned according to the degree of dirt of each scaffold plate. The degree of stain removal on the plate tended to depend on the condition of the stain before washing. In other words, scaffolds that are heavily contaminated require re-cleaning due to insufficient cleaning, and scaffolds that are less contaminated require excessive cleaning due to excessive water, power, and time required for cleaning work. There was a problem that it was wasted.

Therefore, an object of the present invention is to solve the above-mentioned problems, to grasp the degree of contamination of each aluminum temporary scaffold, and to perform a reasonable washing operation accordingly. Another object of the present invention is to provide a cleaning method.

[0007]

In order to achieve the above object, a method for cleaning an aluminum temporary scaffold according to claim 1 comprises the following steps a to e.

[0008] a. The image of the aluminum temporary scaffold taken by the camera is taken in by the image input section, and b. The image processing section performs binarization processing, thereby extracting the hole portion from the entire scaffold board, C. For the part other than the hole, the image processing unit performs a binarization process to extract the dirt part and calculate the area of the dirt part. D. The hole calculated above The degree of dirt is calculated using the area of the part, the area of the dirt part, and the entire area of the image. E. According to the degree of dirt calculated above, the cleaning nozzle is slowed down as the degree of dirt increases. Adjust the feed speed of the scaffold passing below.

In the method for cleaning a temporary aluminum scaffold according to the second aspect, the step e is changed so that the number of operation of the cleaning nozzles increases as the degree of contamination increases.

Further, in the method of cleaning an aluminum temporary scaffold according to claim 3, when the number of operations of the cleaning nozzle is increased as the degree of contamination is increased, the distance from the cleaning nozzle to the scaffold is reduced. Conversely, when reducing the number of operations of the washing nozzle as the degree of contamination becomes smaller, the distance from the washing nozzle to the scaffold is increased.

In each of the above-described cleaning methods, the degree of contamination of the aluminum temporary scaffold is quantitatively and objectively calculated as a degree of contamination by image processing, and cleaning is directly performed using the quantitatively obtained calculation result. It is possible to control the feed speed of the scaffold plate below the nozzle and control the number of operations of the washing nozzle. In particular, when controlling the number of operations of the cleaning nozzles, by adjusting the distance from the cleaning nozzles to the scaffold as described above, the cleaning area covered by the cleaning nozzles is kept constant regardless of the number of operating nozzles. It is possible to appropriately adjust the cleaning operation such as keeping the temperature. And, as the degree of contamination is larger, the feed speed is slowed down, and the number of operations of the washing nozzle is increased,
Since the washing operation is controlled, the scaffold can be washed finely for each scaffold according to the degree of contamination. as a result,
Regardless of the degree of contamination before washing, all scaffolds that have been washed will be almost equally cleaned. Therefore, it is necessary to re-clean the scaffold plate with heavy dirt, and prevent excessive scrubbing with scaffold plate with less dirt, saving water volume, energy and time. Cleaning work can be performed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a so-called aluminum temporary scaffold made of an aluminum alloy,
Are formed with a large number of holes 3 at predetermined intervals. The aluminum temporary scaffold plate 1 is placed on the rollers 5 of the roller conveyor 4 as transport means, and is first sent to the inspection section and then to the washing section. Reference numeral 6 denotes a roller conveyor control panel for controlling the transport speed of the roller conveyor 4,
The transport speed of the roller conveyor 4 is adjusted based on a feed speed command from the roller conveyor control panel 6.

Reference numeral 10 denotes a commercially available 8 mm video camera as an imaging device installed in the inspection unit, which is arranged to image an area A which is a part of the surface of the aluminum temporary scaffold 1 illuminated by the lighting fixture 11. Have been. The video camera 10 may be either analog or digital.

Reference numeral 20 denotes an image processing device, which is an image input unit 21 including a frame memory for writing image data for each screen and then displaying the image data on a display device, and a personal computer (personal computer) as an image processing unit for performing image processing. ) 22 and a display device 23 for displaying images and interacting with the personal computer 22.

A plurality of water jet cleaning nozzles 30 are provided downstream of the inspection section in the conveying direction of the roller conveyor 4 to constitute a cleaning section.

FIG. 2 shows the degree of contamination of concrete calculated by image processing, and based on this, the aluminum temporary scaffold 1
1 shows a flowchart of a cleaning method for cleaning a substrate.

This embodiment is basically a video camera 1
The image of the aluminum temporary scaffold 1 taken at 0
1, the computer 22 performs a binarization process, thereby extracting the hole 3 from the entire scaffold 1, calculating the area Sa of the hole 3, and calculating the area Sa other than the hole 3. The dirt portion is extracted by performing binarization processing on the personal computer 22, and the area Sb of the dirt portion is calculated. The area Sa of the hole portion, the area Sb of the dirt portion, and the total area of the image are calculated. Using Sc and the degree of contamination C
The transport speed of the roller conveyor 4 is adjusted according to the magnitude of the contamination degree C calculated as described above, so that the larger the contamination degree C, the slower the feed speed of the scaffold plate 1 passing below the washing nozzle 30. It is supposed to.

First, the surface 2 of the aluminum temporary scaffold 1
Is captured by the video camera 10 for the area A (step S0), and the video signal of the monochrome analog image is
Image processing device 2 including image input unit 21 and personal computer 22
Enter 0. That is, the image of the aluminum temporary scaffolding board 1 captured by the video camera 10 is taken into the image input unit 21 of the image processing device 20 in the size of the area A. In the case of this embodiment, the image input unit 21 converts the received analog image into 256-level (8-bit) gradations for each pixel (white / black degree (white: “255”, black: “0”)). (See FIG. 3)
1).

The image is divided into the holes 3 of the scaffold 1 and other parts. First, to extract the portion of hole 3, 2
Of the 56 steps, a predetermined threshold value α, here the threshold value α = “33”, is subjected to binarization processing (hole portion: black). If it is small, the hole is set to "black" (step S2). FIG. 4 shows a binarized image obtained by this.

Filter processing is performed to remove salt and pepper noise in the image of FIG. 4 (step S 3). The filtered image is shown in FIG. By this filtering process, as shown in the figure, the hole portion is sharp, and the noise in other portions is eliminated.

Here, the area Sa of the hole is calculated (step S 4).

On the other hand, the portion other than the hole is binarized by dividing the portion into a portion where the concrete is attached and a portion where the aluminum alloy is exposed without the attachment of the concrete (aluminum portion). The area Sb of the portion is calculated. First, in order to extract a dirty portion, binarization processing is performed using a predetermined threshold value β, here, the threshold value β = “130” (step S5). That is, "black" smaller than the stain portion extraction threshold value β is determined as a stain portion to which concrete is attached (step S6), and "white" larger than the threshold value β is an exposed background portion of the aluminum alloy. That is, it is classified as an aluminum part (step S7). FIG. 6 shows the image after the binarization processing.

Next, a portion determined as “black”, that is, a stain portion is selected (step S 6), and an area Sb of the stain portion is calculated (step S 8).

The total area of the image of the area A, which is known in advance, is taken as Sc (Step S10), and the following equation is obtained from the total area Sc of this image, the area Sa of the hole portion, and the area Sb of the dirt portion. To obtain the contamination degree C (step S9).

Soil degree C = ｛1− (soil area Sb)
/ (Total area Sc−hole area Sa)｝ x100 The degree of contamination C obtained above is compared with the discrimination value γ (steps S11 to S13), and the degree of contamination is classified according to the comparison result. In this example, the degree of dirt is classified into three levels: low dirt degree (dirt degree 1), normal dirt degree (dirt degree 2), and high dirt degree (dirt degree 3). Then, the image processing stain degree classification result is output to the roller conveyor control panel 6.

FIGS. 7 to 10 show grayscale images (FIG. 7) of the scaffold 1 corresponding to each of the dirt levels 1, 2, and 3; binarized images obtained by extracting holes (FIG. 8); An image (FIG. 9) and a binarized image (FIG. 10) obtained by extracting a dirt portion are illustrated. The calculation example of each degree of contamination will be described. The total area Sc of the image in the area A is taken as the number of pixels of the captured image 480 * 640 = 3
Assuming that 07200, in the above example, the number of pixels of the area Sa of the hole portion is “18107” at each of the dirt levels 1, 2, and 3.
, "17316", and "21347", and the number of pixels of the area Sb of the dirty portion is "286727", "256547", and "21347", respectively.
3347 ", and from the above equation, each degree of contamination C is
0.8%, 11.5% and 25.4% are obtained.

The roller conveyer control panel 6 sets the feed speed of the roller conveyer 4 in accordance with the image processing dirt degree classification result sent thereto. The feed speed of the scaffold plate 1 passing under the washing nozzle 30 decreases as the dirt degree increases. To adjust. That is, an intermediate feed speed (feed speed 2) is commanded in the case of a normal dirt degree (dirt degree 2), and a higher feed rate (feed rate 3) in the case of a small dirt degree (dirt degree 1). Command,
If the degree of dirt is large (dirty degree 3), a slower feed speed (feed speed 1) is commanded (steps S14 to S16).

According to the above-described cleaning method, it is possible to quantitatively classify and clean the state of dirt on each of the aluminum temporary scaffolds 1 by image processing. Further, since the determination result of the contamination is quantitative, it can be directly fed back to the feed speed control of the water jet cleaning. By changing the feed speed, that is, the washing speed, the scaffold plate 1 can be washed according to the degree of dirt.

In the above-described embodiment, the feed speed of the aluminum temporary scaffold plate 1 is adjusted according to the calculated degree of dirt so that the greater the degree of dirt, the longer the cleaning time. But,
According to the calculated degree of dirt, the amount of water jetted from the cleaning nozzles 30 is adjusted to increase the cleaning power as the degree of dirt is increased. For example, the number of nozzles 30 to be used among the plurality of cleaning nozzles 30 is adjusted. Can be controlled. By the way, if the number of operations of the cleaning nozzle 30 is simply reduced, there is a possibility that a portion where the scaffold plate 1 cannot be cleaned in a streak shape may occur. At this time, if the number of operations of the cleaning nozzles 30 is simply increased, the cleaning areas of the adjacent cleaning nozzles 30 overlap each other, and the cleaning efficiency is reduced. Therefore, when the number of operations of the cleaning nozzles 30 is reduced due to a low degree of contamination, the separation distance H (see FIG. 1) from the cleaning nozzles 30 to the scaffold 1 is increased so that each cleaning nozzle 30 is covered. What is necessary is just to widen the washing area to be performed. By adjusting the separation distance H between the washing nozzle 30 and the scaffold plate 1 in this manner, it is possible to adjust the washing operation such as keeping the washing area covered by the washing nozzle 30 constant regardless of the number of working nozzles. Can be done properly. When the number of operating nozzles is reduced, the number of operating nozzles in the transport direction of the roller conveyor 4, that is, the number of operating nozzles in the direction perpendicular to the longitudinal direction of the scaffold plate 1 is reduced. May be slid in the width direction of the roller conveyor 4.

[0030]

As described above, according to the method for cleaning an aluminum temporary scaffold plate of the present invention, the degree of contamination of the aluminum temporary scaffold plate is quantitatively and objectively calculated as a degree of contamination by image processing. The feed speed control of the scaffold plate below the washing nozzle and the operation number control of the washing nozzle can be executed as it is using the calculation result obtained in step (1). In particular, when controlling the number of operations of the cleaning nozzles, by adjusting the distance from the cleaning nozzles to the scaffold as described above, the cleaning area covered by the cleaning nozzles is kept constant regardless of the number of operating nozzles. Adjustment of the cleaning operation such as maintenance can be appropriately performed. Since the cleaning operation is controlled so that the feed rate becomes slower and the number of operations of the cleaning nozzles increases as the degree of dirt increases, the scaffold can be finely cleaned for each scaffold according to the degree of dirt. As a result, irrespective of the degree of dirt before the washing, all the scaffolds that have been washed are almost equally cleaned. Therefore, it is necessary to re-clean the scaffold plate with heavy dirt, and prevent excessive scrubbing with scaffold plate with less dirt, saving water volume, energy and time. Cleaning work can be performed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a method for cleaning an aluminum temporary scaffold according to the present invention.

FIG. 2 is a flowchart illustrating an embodiment of the method for cleaning an aluminum temporary scaffold according to the present invention.

FIG. 3 is a diagram showing a grayscale image obtained by digitizing the black and white degree of a captured image in 256 gradations.

FIG. 4 is a diagram showing an image obtained by binarizing the grayscale image of FIG. 3 with a predetermined threshold α and extracting a hole portion;

FIG. 5 is a diagram showing an image obtained by filtering the image of FIG. 4 to remove salt and pepper noise.

6 is a diagram showing an image obtained by binarizing the grayscale image of FIG. 3 with a predetermined threshold value β and extracting a stain portion.

FIG. 7 is a diagram showing an example of a grayscale image of a scaffold plate of each degree of contamination.

FIG. 8 is a diagram illustrating an example of an image obtained by binarizing an image of a scaffold plate of each degree of contamination and extracting a hole portion.

FIG. 9 is a diagram illustrating an example of an image in which binarized images of a scaffold having different degrees of contamination are subjected to a filtering process to remove salt and pepper noise.

FIG. 10 is a diagram showing an example of an image obtained by binarizing an image of a scaffold plate of each degree of dirt and extracting a dirt portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aluminum temporary scaffold board 4 Roller conveyor 6 Roller conveyor control panel 10 Video camera 20 Image processing device 21 Image input part 22 Personal computer 23 Display device 30 Cleaning nozzle

Claims (3)

[Claims] 1. An image of an aluminum temporary scaffold taken by a camera is captured by an image input unit, and a binarization process is performed by an image processing unit to extract a hole portion from the entire scaffold plate, and to calculate an area of the hole portion. The image processing unit performs a binarization process on the portion other than the hole to extract the dirt portion, calculate the area of the dirt portion, and calculate the area of the hole portion calculated above and the dirt portion. Using the area of the image and the total area of the image, the degree of dirt is calculated, and according to the degree of dirt calculated as described above, the feed of the scaffold plate passing below the cleaning nozzle is delayed as the degree of dirt increases. A method for cleaning a temporary aluminum scaffold plate, wherein the speed is adjusted. 2. Instead of increasing or decreasing the feed speed of the scaffold passing below the washing nozzle so as to be slower as the degree of contamination is larger, the number of operations of the washing nozzle is increased as the degree of contamination is larger. The method for cleaning a temporary aluminum scaffold according to claim 1, characterized in that: 3. When increasing the number of operations of the cleaning nozzle as the degree of contamination increases, the distance from the cleaning nozzle to the scaffold plate is reduced, and conversely, the number of operations of the cleaning nozzle decreases as the degree of contamination decreases. 3. The method for cleaning a temporary aluminum scaffold according to claim 2, wherein the distance from the cleaning nozzle to the scaffold is increased when the number of the scaffolds is reduced.