JP6731286B2 - Capping sheet damage caution point detection device, capping sheet damage caution point detection method, computer program - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technique for detecting a breakage caution point that is a possibility of breakage in a capping sheet that covers waste.

A capping sheet for covering waste is in practical use.
For example, in Fukushima Prefecture, a large amount of decontaminated material (waste) generated by decontaminating radioactive materials diffused from the Fukushima Daiichi Nuclear Power Station due to the 2011 Great East Japan Earthquake temporarily decontaminated the decontaminated material. The capping sheet is used to cover such decontaminated material, although it is placed in a temporary storage area.
The decontaminated material is placed in a temporary storage site in a state of being packed in a container made of a film material called a flexible container. However, flexible containers made of membrane material are subject to damage due to natural phenomena and birds and beasts. In such a case, the decontaminated material flows out of the flexible container. Further, when rainwater enters the flexible container, radioactive substances in the decontamination product may dissolve into the rainwater that has entered the flexible container, and may flow out of the flexible container together with the rainwater that has flowed out of the flexible container.
The capping sheet has the role of preventing the radioactive substances dissolved in rainwater from flowing out of the flexible container by preventing the decontamination product itself from flowing out of the flexible container or the rainwater entering the flexible container. There is.

The above-mentioned flexible container generally has vertical and horizontal heights of about 1 m to 1.3 m, respectively, and is quite large. Further, the flexible containers may be simply arranged in a large number vertically and horizontally in a temporary storage space, in other words, in a plane, but in many cases, they are also vertically stacked. Therefore, the capping sheet that covers such a large number of flexible containers is inevitably large.
The capping sheet is generally made by connecting sheet materials, which are formed by sandwiching a breathable waterproof film to a non-woven fabric. Since such a sheet material is generally formed as a long material having a predetermined width, its length in the length direction is large, but its length in the width direction is not so large. Therefore, it is inevitable that the capping sheet has a joint.

On the other hand, the capping sheet is easily damaged.
Since the capping sheet is used outdoors, it is exposed to wind and rain, sunlight, or changes in temperature, and may be damaged by birds and beasts. In addition, when the decontaminated material placed in the flexible container contains organic matter such as plants, the organic matter may ferment to generate heat, and the volume of the decontaminated matter decreases as a result of the progress of such fermentation. As a result, the volume of the flexible container may decrease. Since such flexible container volume reduction does not necessarily occur uniformly in each flexible container, for example, when large irregularities are formed on the upper surface of the stacked flexible containers, a large tension is applied to a part of the capping sheet. It may cause a situation where
Due to these circumstances, capping sheets, which have the fate that there are joints between sheet materials and that peeling easily occurs there, are not only that, but also tears due to tension, scratches due to surface abrasion, and penetration from the outside. There is a possibility that hole-like breakage due to piercing, hole-like breakage due to penetration from the inside, tearing due to piercing, dissolution, etc. may occur. In fact, according to the research conducted by the inventor of the present application, it has been found that the above-described damage modes are actually occurring in the field of use of the capping sheet at a rate as high as that described above.

By the way, the above-mentioned role is imposed on the capping sheet. In order for the capping sheet to continuously play such a role, the damage should be suppressed, and if there is such damage, it should be promptly grasped and repaired. is there.
Therefore, there is an urgent need to develop a technique for detecting damage to the capping sheet.
At present, detection of breakage of the capping sheet is performed visually by an operator. While the operator rides on the capping sheet, the operator visually detects the presence or absence of the damage and the position of the damage. However, such visual inspection of the capping sheet involves work at a high place because the flexible containers covered by the capping sheet may be stacked. Therefore, since it is difficult for the worker to move on the capping sheet, the work takes time and there is a problem in safety.
On the other hand, the applicant of the present application, for example, causes a drone equipped with a camera to fly over the capping sheet, and based on the image of the capping sheet taken by the camera, the so-called remote sensing technology is used to damage the capping sheet. I am doing research on the technology to detect.
However, no matter what damage detection method is used, it would be inefficient to detect damage at the same time, cost, or expense for the entire capping sheet. The present inventor believes that In other words, only the part of the capping sheet that is more likely to be damaged is inspected, or the part of the capping sheet that is more likely to be damaged is more carefully inspected than the other parts. The inventor of the present application considered that the counter effect could be maximized.
However, like the above-mentioned visual inspection, the concept of detecting a damaged portion of the capping sheet has existed up to now, but the concept of previously detecting a region of the capping sheet that is likely to be damaged has existed up to now. Absent. Therefore, naturally, there is no technology for embodying the latter concept.

An object of the present invention is to provide a technique for detecting a breakage caution point which is a possibility of breakage in a capping sheet.

In order to solve the above problems, the present inventor proposes the following invention. The invention of the present application is roughly classified into two types. One of them will be referred to as a first invention and the other will be referred to as a second invention for convenience.

According to a first aspect of the present invention, a strain gauge, which is a sensor attached to a plurality of appropriate points on the capping sheet, which senses the amount of strain of the capping sheet as a parameter and generates parameter data that is data about the parameter, Receiving means for receiving the parameter data, based on the parameter data received by the receiving means, the range of large distortion is detected in the capping sheet, and there is a high risk of damage to the capping sheet within the range. A damaged-attention-location detecting device including:
The damage caution point detection device is provided with an acceptance unit that receives parameter data from a strain gauge that generates parameter data regarding the amount of strain of the capping sheet, and the damage caution point detection device receives the parameter data from the external strain gauge. I am supposed to receive it. On the other hand, the damage caution point detection device is provided with a damage caution point detection means, and the damage caution point detection means detects a range in which the distortion is large in the capping sheet based on the parameter data, and the damage caution area is detected. It is specified as a location. The parameter data is obtained by measuring the strain of the capping sheet arranged in the part where the parameter data is generated, and the amount of the strain corresponds to the stress applied to the position of the capping sheet. ..
According to the damage caution point detection device, a range in which a large stress is applied is determined as a range in which damage is likely to occur in the capping sheet. By configuring such a damage caution location detection device using a machine, generally a computer, it is possible to identify the damage caution location while minimizing the manpower. Further, by specifying the breakage caution point by the breakage caution point detection device according to the first aspect of the invention, only the part of the capping sheet that is more likely to be damaged is inspected, or the part of the capping sheet that is more likely to be damaged. Can be inspected more carefully than other parts, and the efficiency of inspecting the damaged portion of the capping sheet is increased.

As described above, a plurality of strain gauges are attached to the capping sheet. The position with respect to the capping sheet when the strain gauge is attached to the capping sheet can be appropriately determined.
The plurality of strain gauges, for example, on a line passing through a substantially center of the capping sheet when the capping sheet is viewed in plan view, at least the substantially center of the capping sheet and the line intersect with the outer periphery of the capping sheet 2 It may be attached at or near the point. In this case, the breakage caution point detection means identifies the mutation on the line of the capping sheet from the parameter data generated by the plurality of strain gauges received via the reception means, thereby detecting the breakage caution point. May be detected. By arranging at least three strain gauges linearly, it is possible to provide a damaged portion detecting means.

The same effects as those of the device for detecting a damaged portion according to the first invention described above can be obtained by the following method.
One example of the method is a method executed by the computer of a damage caution point detection device including a computer for identifying a damage caution point having a high possibility of being damaged in a capping sheet, which is performed by the computer. A step of receiving the parameter data from a strain gauge which is a sensor attached to the capping sheet at a plurality of appropriate positions by sensing the amount of strain of the sheet as a parameter and generating parameter data which is data about the parameter. And, based on the received parameter data, a range in which the strain is large in the capping sheet is detected, and the range is specified as a breakage caution point with a high risk of breakage of the capping sheet. This is a method to detect the point where the sheet is damaged.
The same effects as those of the damage caution location detecting device according to the first aspect of the invention described above can be obtained by the following computer program.
The computer program is a computer program for causing a computer to function as a device for detecting a damaged portion of a capping sheet, wherein the computer program senses the computer by using the amount of distortion of the capping sheet as a parameter. For generating the parameter data that is data about, from the strain gauge that is a sensor attached to the capping sheet at a plurality of appropriate positions, a receiving unit that receives the parameter data, based on the parameter data received by the receiving unit. A computer program for detecting a range of large distortion in the capping sheet and for identifying the range as a damage caution point detection unit that identifies the range as a damage caution point with a high risk of damage to the capping sheet. Is.

Next, the second invention will be described.
The second invention was obtained from the following findings.
As described above, the capping sheet that covers the flexible container, whose volume may decrease, may have large irregularities on the upper surface, and if the capacity of the flexible container decreases, irregularities will occur on the capping sheet. A large tension may be partially applied to the capping sheet at a portion where the irregularities formed on the capping sheet are large, which increases the possibility of causing damage to the capping sheet.
That is, the inventor of the present application has found that by grasping the irregularities on the capping sheet, it is possible to identify a damaged portion, which has a large risk of damage to the capping sheet.

The second invention obtained from this finding is as follows.
A second invention is to receive the parameter data from a predetermined sensor that senses a predetermined parameter related to the degree of unevenness, which is the degree of unevenness of the surface of the capping sheet, and generates parameter data that is data about the parameter. Means, based on the parameter data received by the receiving means, based on the distortion range of the capping sheet, the unevenness degree detection means for detecting a distortion range in which the unevenness is large, and the distortion range of the capping sheet. Further, there is provided a damage caution point detection device including a damage caution point detection unit that specifies a damage caution point that has a high risk of damage to the capping sheet.
The damage caution point detecting device receives parameter data regarding a parameter relating to the degree of unevenness, which is the degree of unevenness of the capping sheet, from an external sensor, and the unevenness degree detection means has a large degree of unevenness based on the parameter data. The distortion range, which is the range, is detected. Further, in the damage caution point detection device, when the unevenness degree detection means detects the distortion range, the damage caution point detection means specifies the damage caution point of the capping sheet based on the distortion range. In this way, it is possible to identify the breakage caution point without measuring the strain itself occurring in the capping sheet.
By performing such processing using a machine, generally, a computer, the damage caution point detection device can specify the damage caution point with a minimum of manpower. Further, by specifying the damage cautioned point by the damage cautioned point detection device according to the second aspect of the invention, it is possible to increase the efficiency of the inspection of the damage point of the capping sheet as in the case of the first aspect of the invention. ..

A sensor used in combination with the damage caution location detecting device of the second invention senses a predetermined parameter related to the degree of unevenness, which is the degree of unevenness of the surface of the capping sheet, and generates parameter data which is data about the parameter. Anything can be done. The parameter to be sensed may be any parameter related to the degree of unevenness, and can be appropriately selected from such parameters.
The sensor is a visible light image sensor that senses the intensity of light of a specific wavelength of visible light reflected by the capping sheet as the parameter, and generates the parameter data that is data about the image of the capping sheet. May be In this case, the unevenness degree detection unit generates three-dimensional data for reproducing the three-dimensional shape of the capping sheet from the parameter data generated by the visible light image sensor received through the reception unit, and the part thereof is generated. The strain range may be detected by quantifying the unevenness of each. In this way, it is possible to specify the strain range from the three-dimensional data that specifies the shape of the capping sheet.
The sensor senses the intensity of thermal infrared light from the surface of the capping sheet as the parameter, and generates the parameter data that is data about a thermal infrared image showing the temperature of the surface of the capping sheet. It may be an infrared light image sensor. In this case, the unevenness degree detection means determines the strain range by specifying the temperature depending on the location of the capping sheet from the parameter data generated by the thermal infrared light image sensor received through the reception means. It may be adapted to detect. As described above, the unevenness of the capping sheet is caused by the volume of the flexible container being reduced due to the fermentation of the organic substances contained in the decontaminated material in the flexible container therebelow. On the other hand, the temperature rises when the organic matter ferments. Therefore, by grasping the temperature rise, it is possible to indirectly grasp the irregularities of the capping sheet, and thereby to specify the range in which the capping sheet is likely to be damaged.

The same effects as those of the device for detecting a damaged portion according to the second aspect of the invention described above can be obtained by the following method.
One example of the method is a method executed by the computer of a damage caution point detection device including a computer for identifying a damage caution point having a high possibility of being damaged in a capping sheet, which is performed by the computer. A process of receiving the parameter data from a predetermined sensor that senses a predetermined parameter related to the degree of unevenness that is the degree of unevenness of the surface of the sheet and generates parameter data that is data about the parameter, and the received parameter. Of the capping sheet based on the data, the process of detecting the strain range which is the range where the unevenness is large, and based on the strain range of the capping sheet, there is a high risk of damage to the capping sheet. A method for detecting a point of caution for damage to a capping sheet, which includes a step of specifying a point.
The same effect as that of the device for detecting a damaged portion according to the second aspect of the invention described above can be obtained by the following computer program.
The computer program is a computer program for causing a computer to function as a device for detecting a damaged portion of a capping sheet, the computer program relating the computer to a degree of unevenness that is a degree of unevenness on a surface of the capping sheet. From a predetermined sensor that senses a predetermined parameter to generate parameter data that is data about the parameter, receiving means for receiving the parameter data, based on the parameter data received by the receiving means, of the capping sheet An unevenness degree detecting means for detecting a strain range having a large unevenness degree, and a damage caution point detection for specifying a damage caution point having a high possibility of damage of the capping sheet based on the distortion range of the capping sheet. It is a computer program for making it function as means.

The side view showing roughly the composition of the temporary storage place of the waste containing the capping sheet where the damage caution point is detected by the damage caution point detection device by one embodiment of the present invention. The top view which shows roughly the structure of the temporary storage space shown in FIG. FIG. 1 is a perspective view showing an external appearance of a damage attention location detection device according to an embodiment of the present invention. FIG. 4 is a hardware configuration diagram of the damage caution point detection device shown in FIG. 3. FIG. 4 is a block diagram showing functional blocks formed in the damaged portion detection device shown in FIG. 3. FIG. 4 is a plan view exemplifying a position where a strain gauge is arranged when a sensor that generates parameter data used in the damage caution point detection device shown in FIG. 3 is a strain gauge. FIG. 4 is a plan view showing a route along which a drone flies when generating the image data when the parameter data used in the damage caution point detection device shown in FIG. 3 is image data.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

In this embodiment, a capping sheet damage caution location detection device for detecting a damage caution location that is a location where breakage is likely to occur in a capping sheet used in a temporary storage place for waste will be described.
First, the structure of the temporary storage space will be briefly described.

FIG. 1 shows a schematic side view of the temporary storage space, and FIG. 2 shows a schematic plan view.
On the ground of the temporary storage place for waste, a water-blocking sheet 1 having a size corresponding to the entire area below a flexible container described below is laid. The water-blocking sheet 1 is, for example, a resin sheet having water-blocking performance. The water shield sheet 1 plays a role of preventing the outflow water leaking from the flexible container from reaching the ground. As the water-blocking sheet 1, for example, a known or well-known sheet used at a waste disposal site can be used.
A large number of flexible containers 2 are placed on the water shield sheet 1. The flexible container 2 is a container made of a film material and configured to have flexibility as a whole. The flexible container 2 may be a known one or a known one, and the flexible container 2 is not limited to this. As the flexible container 2, a highly weather resistant flexible container of Microcomputer (trademark) series manufactured and sold by Nippon Matai Co., Ltd., or The weatherproof large sandbag type container bag of the MK bag (trademark) series manufactured and sold by Morishita Chemical Co., Ltd. can be used. The flexible container 2 has a length, width, and height of about 1 m to 1.3 m. Although not limited to this, the flexible container 2 stores the decontaminated material. The decontaminated material is, for example, vegetation, earth and sand, rubble, stone, rock, etc., and these are stored individually or in a mixture in each flexible container 2. What is stored in each flexible container 2 is not necessarily the same.
The flexible containers 2 are stacked in multiple layers. Although not limited to this, of course, in this embodiment, 8×6 first-stage flexible containers 2 are arranged on the water-blocking sheet 1, and 7×5 are arranged on the first-stage flexible container 2. The second flexible containers 2 are arranged, and the 6×4 third flexible containers 2 are arranged on the second flexible container 2.
The flexible container 2 is entirely covered with a capping sheet 3. Although not limited to this, in this embodiment, the capping sheet 3 is slightly larger than the water-blocking sheet 1. That is, the edge of the capping sheet 3 surrounds the edge of the water-blocking sheet 1. The capping sheet 3 is a sheet having a water impermeability. The capping sheet 3 has a role of preventing rainwater from entering the flexible container 2 and a role of preventing the decontaminated material that has leaked from the flexible container 2 from scattering outside. The capping sheet 3 is, for example, a nonwoven fabric sandwiching a breathable waterproof film, and the thickness thereof is, for example, about 0.5 mm to 1.5 mm. Although not shown, the capping sheet 3 is configured by joining long sheet materials by, for example, heat welding which is a known or well-known method.
In addition, in the temporary storage area, rainwater disposed on the water-blocking sheet 1 and invading the capping sheet 3 and the outflow water flowing out from the flexible container 2 after the rainwater invade the flexible container 2 are discharged. Drain pipe which is a pipe for storing, a storage tank for storing rainwater discharged from the drain pipe, a weight for fixing each edge of the impermeable sheet 1 and the capping sheet 3 to the ground, and the entire temporary storage area. Although there are enclosures and the like for isolating them from the outside, these are all well known and have no relation to the invention of the present application, and therefore their illustration is omitted.

Next, a damage caution point detection device for detecting a damage caution point of the capping sheet 3 installed in the above temporary storage place will be described.
An external view of the damage caution location detecting device 100 is shown in FIG. The damage caution point detection device 100 is configured by a computer. The damage caution point detection device 100 in this embodiment is configured by a so-called notebook computer, but may be configured by a desktop computer or a tablet computer. Since the computer constituting the damage caution location detecting device 100 has no significant feature in terms of its hardware, a very general computer such as a commercially available computer, or more generally, a general computer can be used for this.

The computer that constitutes the damage caution point detection device 100 includes an input device 101 and a display device 102.
The input device 101 is a device for making an input to the damage caution location detection device 100, and is, for example, a keyboard, a numeric keypad, a mouse, or the like. In some cases, the display device 102 can also function as the input device 101 by using a touch panel. The input device 101 can be configured by at least one of these.
The display device 102 is a monitor for displaying. The display device 102 can display a liquid crystal display or an organic EL display, for example.
The damage caution location detection device 100 includes a connection terminal (not shown). The connection terminal is, for example, a USB (Universal Serial Bus/trademark) terminal. The connection terminal receives parameter data described below from a sensor (strain gauge, digital camera, or the like) that is a device outside the damage caution location detection device 100, and corresponds to the acceptance means in the present invention. To the extent possible, the connection terminal does not have to be a USB terminal. Furthermore, the connection terminal is not limited to a wired terminal such as a USB terminal that receives data, but may be a mechanism that wirelessly receives data, such as Bluetooth. Furthermore, if the parameter data is provided to the damage caution point detection device 100 via a predetermined recording medium, the connection terminal is a device for reading the data recorded on such a recording medium. be able to. For example, if the recording medium is a DVD, the connection terminal can be replaced with a DVD reader, and if the recording medium is an SD card, the connection terminal can be replaced with an SD card reader.
In this embodiment, the connection terminal can be connected to a sensor described later, specifically, via a connection cable 100A which is a USB cable, and parameter data generated by the sensor as described below is transmitted from the sensor. , Is received via the connection cable 100A.

Next, the configuration of the damage caution point detection device 100 will be described.
The damage caution point detection device 100 includes hardware as shown in FIG. In this embodiment, the damage caution location detecting device 100 includes a CPU (Central Processing Unit) 111, a ROM (Read Only Memory) 112, a RAM (Random Access Memory) 113, an HDD (Hard disc drive) 114, an interface 115, and A bus 116 for connecting these is provided.
The CPU 111 is an arithmetic device and controls the entire damage caution location detection device 100. The CPU 111 executes various programs as described below by executing the programs.
The ROM 112 is a non-rewritable memory, and stores a program for operating the CPU 111, data required when the damage caution location detection device 100 executes the following processing, and the like.
The RAM 113 is a rewritable memory and provides a work area when the CPU 111 executes the following processing.
The HDD 114 is a recording medium that records data. The HDD 114 also records programs and data for operating the CPU 111. For example, the OS for operating the CPU 111 is recorded in the HDD 114. The program of the present invention is recorded in the ROM 112 or the HDD 114. Note that the program of the present invention may be installed in the damage caution point detection device 100 from the time of shipment of the damage caution point detection device 100. It may be installed in 100. When installed after shipment of the damage caution point detection device 100, the program of the present invention may be recorded in the damage caution position detection device 100 from a recording medium such as a CD-ROM, or from a predetermined network such as the Internet. It may be recorded in the damage caution point detection device 100 through the download. The program of the present invention may cause the CPU 111 to execute the below-described processing by itself, or may cause the CPU 111 to execute the below-described processing in cooperation with the OS and other programs. I do not care.
The interface 115 serves as a window for connecting the CPU 111, the ROM 112, the RAM 113, and the HDD 114 to the outside of the damage caution point detection device 100. The CPU 111, the ROM 112, the RAM 113, and the HDD 114 exchange data with the outside via the interface 115. You can do it. For example, the interface 115 is connected to the above-mentioned connection terminal, which is a USB terminal. This connection terminal may receive parameter data from the sensor, as described above. The parameter data received by the connection terminal is sent from the interface 115 via the bus 116 to the CPU 111, the RAM 113, the HDD 114, or the like, where the data is needed. The interface 115 is also connected to the input device 101 and receives data generated by the user operating the input device 101. The interface 115 is also connected to the display device 102 and outputs image data for displaying an image on the display device 102.

When the CPU 111 executes the program of the present invention, the controller 120, which is also a functional block, including the various functional blocks shown in FIG.
The control unit 120 executes various processes according to the present invention.
The control unit 120 includes an input unit 121, a main control unit 122, a convexity/concavity degree detection unit 123, a damage cautioned position detection unit 124, an output image generation unit 125, and an output unit 126.
The input unit 121 receives an external input to the control unit 120. The input unit 121 receives at least input data from the input device 101 and parameter data from the connection terminal. The input unit 121 determines what the received data is, and if the received data is the input data from the input device 101, the data is sent to the main control unit 122, and the received data is the parameter data. In that case, the data is sent to the unevenness degree detection unit 123 or the damage cautioned position detection unit 124, respectively. When the parameter data is generated by a strain gauge described below, the parameter is sent to the damage caution point detection unit 124 and the parameter data is transmitted to the damage caution point detection unit 124. When the data is generated by another sensor, it is sent to the unevenness degree detection unit 123, respectively.
The main control unit 122 controls the entire control unit 120, and particularly controls the unevenness degree detection unit 123 and the damaged portion detection unit 124. From the input unit 121, it is possible to input data for specifying which sensor the parameter data to be subsequently input (or currently being input) is the parameter data generated by. From the input data from the input device 101, the main control unit 122 identifies which sensor generated the parameter data that is subsequently input, and is suitable for the unevenness degree detection unit 123 or the damage caution point detection unit 124. To perform various processing. In particular, as will be described later, since the unevenness degree detection unit 123 in this embodiment can perform two types of processing in detecting the unevenness degree, the unevenness degree detection unit 123 performs the two types of processing. Which of the above is executed is controlled. It is the role of the main control unit 122 to control the unevenness degree detection unit 123 and the damaged portion detection unit 124 so that they can perform appropriate processing on the parameter data.
However, as will be described later, the parameter data to be input is not limited to one type. In that case, the unevenness degree detection unit 123 may perform two types of processing on each parameter data, or both the unevenness degree detection unit 123 and the damage cautioned position detection unit 124 may perform the processing on each parameter data. Processing may also be performed.

The unevenness degree detection unit 123 receives the parameter data generated by the sensor other than the strain gauge from the input unit 121 as described above. The unevenness degree detection unit 123 executes a process of detecting a strain range in which the unevenness degree is large in the capping sheet 3 with respect to the parameter data.
In this embodiment, although not limited to this, the unevenness degree detection unit 123 receives two types of parameter data. All of the parameter data received by the unevenness degree detection unit 123 are related to the unevenness degree, which is the degree of unevenness on the surface of the capping sheet.
Although not limited to this, in the present embodiment, one type of parameter data received by the unevenness degree detection unit 123 is a visible light image sensor (for example, a general CMOS (Complementary Metal Oxide Semiconductor Image Sensor) as a sensor. ) Or CCD (Charge-Coupled Device).) An example of a device that creates such parameter data is a digital camera equipped with a visible light image sensor as described above. The parameter in this case is the intensity of light of a specific wavelength in the visible light reflected by the capping sheet, and the parameter data created by the visible light image sensor sensing this is data about the image of the capping sheet. .. In short, one type of parameter data is image data of an image obtained by capturing the capping sheet with visible light.
Although not limited to this, in this embodiment, another type of the parameter data received by the unevenness degree detection unit 123 is made by a thermal infrared light image sensor as a sensor. An example of a device for producing such parameter data is a thermography provided with the thermal infrared light image sensor as described above. The parameter in this case is the intensity of thermal infrared light from the surface of the capping sheet, and the parameter data created by the thermal infrared light image sensor sensing this is a thermal infrared image showing the temperature of the surface of the capping sheet. Is the data. In short, the other type of parameter data is image data of an image obtained by capturing the capping sheet with thermal infrared light.
As described above, there are two types of data processing performed on the parameter data by the unevenness degree detection unit 123. The unevenness degree detection unit 123 includes a three-dimensional image processing unit 123A and a temperature image processing unit 123B. The three-dimensional image processing unit 123A and the temperature image processing unit 123B respectively perform data processing on parameter data, which is image data generated by a visible light image sensor, and the latter generate a thermal infrared light image sensor. Data processing is performed on parameter data which is image data of a thermal infrared image.

The three-dimensional image processing unit 123A is configured to generate three-dimensional data that reproduces the three-dimensional shape of the capping sheet 3 by using the image data as the parameter data. Then, by quantifying the unevenness of the surface of the three-dimensional data of the capping sheet 3, the unevenness which is the degree of the unevenness of the capping sheet 3 is large (for example, the unevenness is larger than a certain threshold value, or other than the capping sheet 3). The area where the degree of unevenness is larger than that of the portion) is detected. The range in which the degree of unevenness of the capping sheet 3 detected here is large is the strain range.
The temperature image processing unit 123B specifies the strain range in the capping sheet 3 by specifying the temperature of each part of the capping sheet 3 using the image data of the thermal infrared image as the parameter data. There is. Such a specification is possible because the volume of the flexible container 2 may decrease, but if the volume of the flexible container 2 decreases, the temperature rise due to the fermentation of the decontaminated material in the flexible container 2 prior to the decrease. This is because there is a correlation between the temperature of the surface of the capping sheet 3 and the state of the unevenness on the surface of the capping sheet 3 because it is visible. For example, the degree of unevenness of the capping sheet 3 can be obtained by considering the temperature of the surface of the capping sheet 3 as the degree of depression of the surface. More specifically, the case where the temperature of the surface of the capping sheet 3 is higher than a certain threshold value or the temperature of a certain range of the surface of the capping sheet 3 has a temperature difference larger than the surrounding temperature and a certain threshold value. The temperature image processing unit 123B can detect the range and the like as the distortion range.
As described above, the three-dimensional image processing unit 123A and the temperature image processing unit 123B detect the distortion range. The data that specifies the strain range is strain range data. The unevenness degree detection unit 123 sends the strain range data to the damage cautioned position detection unit 124.

The damage caution location detection unit 124 identifies a damage caution location in the capping sheet 3 where the risk of damage is high.
As described above, regardless of which processing is performed on the parameter data by the unevenness degree detection unit 123, the strain range data is generated and the strain range data is sent to the damage caution point detection unit 124. When receiving the distortion range data, the damage caution point detection unit 124 detects the damage caution point based on the distortion range data.
When the distortion range data is received from the unevenness degree detection unit 123, the distortion range data indicates that the unevenness degree, which is the degree of unevenness of the capping sheet 3, is large as described above. From the strain range data, the damage caution point detection unit 124 can determine a range in which a large stress is applied to the capping sheet 3. As a result, the damage caution location detection unit 124 detects the damage caution location. The data for identifying the damage cautioned point created as a result is the damage cautioned point data.

On the other hand, when the above-mentioned sensor is a strain gauge and the parameter data generated by the strain gauge is input to the input unit 121, the parameter data specifies the breakage caution point in the capping sheet 3 based on the parameter data. It is supposed to do.
The strain gauges are attached to the capping sheet 3 at a plurality of locations. The parameter data is sent from the plurality of strain gauges to the damaged portion detecting device 100.
Here, the strain gauge is generally provided with a thin insulator attached to the surface of the object of which strain is to be measured, and a thin metal resistor provided on the insulator, The strain generated in the object is measured by electrically measuring the change in the resistance value of the resistor caused by the deformation of the resistor together with the insulator when is deformed. Although such strain gauges are known or well known and are commercially available, the strain gauges in this embodiment may be ordinary ones. As the strain gauge, for example, a strain gauge which is a waterproof gauge of the WF (trademark) series manufactured and sold by Tokyo Sokki Kenkyusho Co., Ltd. can be used.
As described above, there are a plurality of strain gauges. It may be attached at an appropriate position on the capping sheet 3. For example, the plurality of strain gauges may be arranged so as to be arranged on a predetermined straight line passing over the capping sheet 3. FIG. 6(A) shows a state in which a plurality of strain gauges 500 are arranged on a straight line passing through substantially the center of the capping sheet 3. At this time, the strain gauge 500 is arranged at least in the approximate center of the capping sheet 3 and in the vicinity of the portion where the straight line intersects the edge of the capping sheet 3. The “substantial center” of the capping sheet 3 has a meaning around the center of the capping sheet 3. For example, if the capping sheet 3 has a rectangular shape in a plan view, the length of the short side from the center of the capping sheet 3 is long. When it is located within the range of 10% of the height, it can be said to be “substantially the center”. The meaning of "near" of a portion where a straight line intersects with the edge of the capping sheet 3 is also the same. For example, if the capping sheet 3 is a rectangle when viewed in plan, the length of the short side from the edge of the capping sheet 3 When it is located within the range of the length of 10%, it can be said to be “near”. Alternatively, the strain gauge 500 can be arranged as shown in FIGS. 6(B) and 6(C). The former shows a case where the strain gauges 500 are arranged on two straight lines arranged in a cross shape that respectively pass through substantially the center of the capping sheet 3. In this example, although not necessarily limited to this, the strain gauge 500 is arranged on two straight lines at least in the approximate center of the capping sheet 3 and near the portion where the two straight lines intersect the edge of the capping sheet 3. It In the latter case, the strain gauges 500 are arranged on the capping sheet 3 in a grid pattern. The strain gauges 500 are each connected to the damage caution location detecting device 100 via the connection cable 100A, but the connection cable 100A is not shown in FIG.
The parameter data generated by the plurality of strain gauges 500 becomes data on the amount of strain at the position of the strain gauge 500 of the capping sheet 3. Upon receiving such parameter data, the damage caution point detection unit 124 has a range in which the amount of distortion indicated by the parameter data in the capping sheet 3 is large (for example, the amount of distortion is larger than a certain threshold value, or other areas of the capping sheet 3). The range where the amount of strain is larger than the part) is detected as the damage caution point. The data for identifying the damage cautioned point created as a result is the damage cautioned point data.

In any case, when the damage caution point data is generated, the damage caution point detection unit 124 sends the damage caution point data to the output image generation unit 125.
Upon receiving the damage caution point data from the damage caution point detection unit 124, the output image generation unit 125 generates output image data, which is data about the output image, based on the damage caution point data. The output image data is image data for displaying the output image on the display device 102. As will be described later, an image indicating where on the capping sheet 3 the breakage caution point exists is displayed on the display device 102. That is, the output image is an image indicating where on the capping sheet 3 the breakage caution location exists.
The output image data is sent from the output image generation unit 125 to the output unit 126.

The output unit 126 outputs the output image data to the outside of the control unit 120. The output unit 126 outputs the output image data from the output image generation unit 125 to the display device 102 or the HDD 114.
When receiving the output image data, the display device 102 displays the output image based on the output image data. When the HDD 114 receives the output image data, it records it. The output image data recorded in the HDD 114 is used to display the output image on the display device 102 later. However, the output image data recorded in the HDD 114 is not limited to the display device 102 of the damage caution point detection device 100, and the output image data is received by wired or wireless communication, or the output image data is portable. It is also possible to display the output image on a display device in another device (for example, a computer) received via the recording medium of.

Next, a method for detecting a damaged portion of the capping sheet 3 in the temporary storage space by the damaged portion detecting device 100 described above and an operation of the damaged portion detecting device 100 will be described.

In order to detect a damaged portion of the capping sheet 3 with the damaged portion detecting device 100, the sensor generates parameter data. The method of generating the parameter data when the sensor is the strain gauge 500 is as described above.
On the other hand, when the sensor is a visible light image sensor or a thermal infrared light image sensor, the parameter data is generated as follows.
The parameter data can be obtained by, for example, capturing an image of the entire capping sheet 3 (preferably the entire image), for example, from above the capping sheet 3.
Here, the parameter data is, for example, from a turret or the like on which the entire capping sheet 3 in the temporary storage space can be looked down from above (it may be plural places), a digital camera including a visible light image sensor, or a thermal red sensor. It is also possible to take an image with a thermography including an external light image sensor. On the other hand, in order to image the entire capping sheet 3 from directly above, for example, under the same conditions, it is convenient to use a device capable of flying over the capping sheet 3. In this embodiment, a digital camera or a thermography (both of which may be mounted on one drone) mounted on a known or known drone is used to image the entire capping sheet 3 in the temporary storage space. I have decided. The drone may be commercially available, for example, an appropriate drone manufactured and sold by amuse oneself.
For the drone, for example, it is possible to select one that can fly by automatic piloting on a course scheduled above the capping sheet 3 (for example, about 10 to 30 m above the ground) by pre-programming. It is convenient. However, the drone may be one that can be manually operated, or one that can be automatically piloted, such as one that can be manually piloted in the event of an unforeseen event. May be.
In this case, the digital camera or thermography must have the necessary resolution, be able to output the parameter data, and be of a weight and size that can be mounted on the drone, and be usable outdoors. Is added. However, since such a request is not so special, a commercially available digital camera or thermography is sufficient. For example, the digital camera can be one of the uncooled infrared sensors and modules manufactured and sold by NEC Corporation. Further, the thermography may be a CPA-T1000 series (trademark) HD (high definition) image quality thermal image camera manufactured and sold by CHINO CORPORATION.

In this embodiment, while the drone is flying at an appropriate height of 10 m to 30 m from the ground, image data (image data of a normal image by visible light or thermal infrared light) is displayed on a digital camera or thermography mounted on the drone. Image data of the thermal infrared image) is generated. Although not limited to this, in this embodiment the drone is self-piloted.
The route along which the drone flies is preferably such that the entire capping sheet 3 can be imaged by a digital camera mounted on the drone or thermography. For example, the drone can move over the capping sheet 3. Can be something. Although not limited to this, in this embodiment, it is as shown by an arrow in FIG. 7. The drone in this embodiment is capable of taking an image of the entire area of the capping sheet 3 by flying in a zigzag manner on the capping sheet 3.
In FIG. 7, there are 24 rectangular ranges of the same size and shape, which are labeled with (1) to (24). The digital camera or thermography mounted on the drone captures a still image in each range labeled with (1) to (24), or captures a moving image in which at least those ranges are captured. The camera is adjusted in advance by a known method or a known method so that such image capturing can be performed. By taking such an image, the camera generates the parameter data which is the image data for the entire range of the above (1) to (24).

When the drone is caused to fly along the route shown in FIG. 7 and the digital camera or thermography mounted on the drone is to generate the parameter data, the digital camera or thermography mounted on the drone is damaged using the connection cable 100A. It connects to the detection device 100 and sends the parameter data to the damage cautioned position detection device 100.
As described above, the parameter data may be sent to the damage caution point detection device 100 by wireless transmission instead of such wired transmission, or the damage caution point may be transmitted via a portable recording medium. It may be passed to the detection device 100. In this embodiment, the parameter data is passed from the digital camera or the thermograph to the damage caution point detection device 100 via the connection cable 100A and the connection terminal. Note that this circumstance is the same when the sensor is the strain gauge 500. When the sensor is the strain gauge 500, and when a portable recording medium is not used for passing the parameter data from the strain gauge 500 to the damage caution location detecting device 100, the parameter data is transmitted between the two. May be always performed in real time, or may be performed at regular intervals.

In any case of the above three types of parameter data, the parameter data is sent from the connection terminal to the input unit 121 of the control unit 120.
Around the same time, the operator of the damaged portion detecting device 100 operates the input device 101 to input information for identifying or selecting whether the parameter data is one of the above three types. The information is sent from the input unit 121 to the main control unit 122. The main control unit 122 controls the unevenness degree detection unit 123 or the damage cautioned position detection unit 124 based on the information. Specifically, when the input parameter data is generated by the strain gauge 500 of the above-mentioned three types of parameter data, the main control unit 122 instructs the damage caution point detection unit 124 to It gives an instruction to process the received parameter data. On the other hand, when the input parameter data is generated by the visible light image sensor of the digital camera, the three-dimensional image processing unit 123A instructs the unevenness degree detection unit 123 to process the parameter data. .. Further, when the input parameter data is generated by the thermal infrared image sensor of thermography, the unevenness degree detection unit 123 is instructed to process the parameter data by the temperature image processing unit 123B. .. In this way, the main control unit 122 controls the unevenness degree detection unit 123 and the damage cautioned portion detection unit 124.

It is assumed that the input parameter data is image data generated by the visible light image sensor.
In this case, the parameter data is sent from the input unit 121 to the unevenness degree detection unit 123. When the parameter data is still image data, the following processing is performed on the parameter data for the images in the ranges (1) to (24) in FIG. 7. When the parameter data is moving image data, an image as a still image in each range of (1) to (24) in FIG. 7 is extracted from the moving image data by, for example, a capture process, and the 24 images are extracted. The following processing is performed on the parameter data of. Note that the process of generating still image data from moving image data (generally, a process of extracting an appropriate frame) is performed by the unevenness degree detection unit 123 in this embodiment. It may be performed by the input unit 121.
For 24 pieces of image data, the three-dimensional image processing unit 123A generates three-dimensional data that reproduces the three-dimensional shape of the capping sheet 3. The generation of such three-dimensional data may be performed by a known method or a known method, and this is also the case in this embodiment. Then, by quantifying the unevenness of the surface of the three-dimensional data of the capping sheet 3, the unevenness which is the degree of the unevenness of the capping sheet 3 is large (for example, the unevenness is larger than a certain threshold value, or other than the capping sheet 3). A range whose degree of unevenness is larger than that of the portion) is detected, and strain range data for the strain range is generated.
It is assumed that the input parameter data is image data for a thermal infrared image generated by the infrared light image sensor. Also in this case, 24 pieces of image data are prepared as described above. Then, the temperature image processing unit 123B executes the following processing on the 24 pieces of image data. The temperature image processing unit 123 specifies the temperature range of each part of the capping sheet 3 by using the image data of the thermal infrared image as the parameter data, thereby specifying the strain range of the capping sheet 3. In this embodiment, the degree of unevenness of the capping sheet 3 is obtained by considering the temperature of the surface of the capping sheet 3 as the degree of depression of the surface. More specifically, the case where the temperature of the surface of the capping sheet 3 is higher than a certain threshold value or the temperature of a certain range of the surface of the capping sheet 3 has a temperature difference larger than the surrounding temperature and a certain threshold value. The temperature image processing unit 123B detects the range as a distortion range. As a result, strain range data for the strain range is generated.
In any case, the generated strain range data is sent from the unevenness degree detection unit 123 to the damage cautioned position detection unit 124.

When the distortion range data is generated and sent to the damage caution point detection unit 124, the damage caution point detection unit 124 detects the damage caution point based on the distortion range data.
As described above, the strain range data indicates that the degree of unevenness, which is the degree of unevenness of the capping sheet 3, is large. The breakage caution point detection unit 124 determines a range where a large stress is applied to the capping sheet 3 from the strain range data. As a result, the damage caution location detecting unit 124 detects the damage caution location and generates the damage caution location data which is the data for identifying the damage caution location.

On the other hand, when the parameter data is generated by the strain gauge 500, the parameter data is directly sent from the input unit 121 to the damage caution point detection unit 124. In this case, the damage caution point detection unit 124 detects the damage caution point based on the parameter data.
As described above, the strain gauges 500 are attached to the capping sheet 3 at a plurality of locations. The parameter data sent from the plurality of strain gauges 500 to the damaged portion detecting section 124 are data on the amount of strain of the capping sheet 3 at the portion where the strain gauges 500 are attached. The parameter data corresponds to the stress applied to the capping sheet 3 at the position where the strain gauge 500 is located, and directly corresponds to the likelihood of breakage of the capping sheet 3. The breakage caution point detection unit 124 has a range in which the amount of strain indicated by the parameter data in the capping sheet 3 is large (for example, the amount of strain is larger than a certain threshold, or the amount of strain is larger than that of other portions of the capping sheet 3). (Large range) is detected as a damage caution point, and damage caution point data is generated.

In any case, the damage caution point detection unit 124 sends the generated damage caution point data to the output image generation unit 125.
Upon receiving the damage caution point data from the damage caution point detection unit 124, the output image generation unit 125 generates output image data that is data about the output image based on the damage caution point data. As described above, the output image data is image data for displaying the output image on the display device 102.
The output image data is sent from the output image generation unit 125 to the output unit 126.

The output unit 126 outputs the output image data to the display device 102 or the HDD 114. In this embodiment, output image data is output to both of them.
Upon receiving the output image data, the display device 102 displays the output image based on the output image data. As a result, the operator of the damage caution location detection device 100 can confirm the damage caution location on the capping sheet 3 from the image displayed on the display device 102.
Further, when the output image data is sent to the HDD 114, the HDD 114 records it. The recorded output image data is used for an appropriate purpose such as to display the output image on the display device 102 later or to display the output image on the display device of another computer.

1 Water-impervious sheet 2 Flexible container 3 Capping sheet 100 Damage caution point detection device 120 Control section 121 Input section 122 Main control section 123 Concavity/convexity detection section 123A Three-dimensional image processing section 123B Temperature image processing section 124 Damage caution point detection section 125 Output Image generation unit 126 Output unit

Claims (7)

Receiving the parameter data from a strain gauge that is a sensor attached to the capping sheet at a plurality of appropriate positions to sense the amount of strain of the capping sheet as a parameter and generate parameter data that is data about the parameter. Reception means,
Based on the parameter data received by the receiving means, a range in which the distortion is large among the capping sheets is detected, and a damage caution point detection means for specifying the range as a damage caution point with a high possibility of damage of the capping sheet, ,
A damage caution point detection device that is equipped with. A plurality of the strain gauges, on a line passing through a substantially center of the capping sheet in a plan view of the capping sheet, at least the substantially center of the capping sheet, and two points where the line intersects with the outer periphery of the capping sheet. It is attached to and near
The damage caution location detection unit detects the damage caution location by specifying a mutation on the line of the capping sheet from the parameter data generated by the plurality of strain gauges received via the reception unit. Like this,
The device for detecting a damaged portion according to claim 1. A method executed by the computer of a damage caution point detection device including a computer for identifying a damage caution point having a high risk of damage in the capping sheet,
The computer executes,
Receiving the parameter data from a strain gauge that is a sensor attached to the capping sheet at a plurality of appropriate positions to sense the amount of strain of the capping sheet as a parameter and generate parameter data that is data about the parameter. Process and
Based on the received parameter data, of the capping sheet, a range in which the strain is large is detected, and a process of specifying the range as a damage caution point with a high risk of damage to the capping sheet,
A method for detecting caution points in a capping sheet, which includes a. A computer program for causing a computer to function as a device for detecting a damaged portion of a capping sheet,
The computer program stores the computer,
Receiving the parameter data from a strain gauge that is a sensor attached to the capping sheet at a plurality of appropriate positions to sense the amount of strain of the capping sheet as a parameter and generate parameter data that is data about the parameter. Receptionist,
Based on the parameter data received by the receiving means, of the capping sheet, detects a range where the distortion is large, damage caution point detection means for specifying the range as a damage caution point with a high possibility of damage of the capping sheet,
A computer program that is intended to function as. From a predetermined sensor that senses a predetermined parameter related to the degree of unevenness that is the degree of unevenness of the surface of the capping sheet to generate parameter data that is data about the parameter, a receiving unit that receives the parameter data,
Based on the parameter data received by the receiving unit, of the capping sheet, the unevenness degree detection unit for detecting a strain range which is a range in which the unevenness degree is large,
Based on the distortion range of the capping sheet, damage caution point detection means for specifying a damage caution point with a high possibility of damage of the capping sheet,
A damage caution point detection device comprising:
The sensor is a visible light image sensor that senses the intensity of light of a specific wavelength of visible light reflected by the capping sheet as the parameter, and generates the parameter data that is data about the image of the capping sheet. And
The unevenness degree detecting unit generates three-dimensional data that reproduces the three-dimensional shape of the capping sheet from the parameter data generated by the visible light image sensor received through the receiving unit, and the unevenness of each part is generated. By quantifying, the strain range is detected.
Damage caution point detection device. A method executed by the computer of a damage caution point detection device including a computer for identifying a damage caution point having a high risk of damage in the capping sheet,
The computer executes,
This is to detect a predetermined parameter related to the degree of unevenness which is the degree of unevenness of the surface of the capping sheet , and to generate parameter data which is data about the parameter , and to specify the visible light reflected by the capping sheet. A step of receiving the parameter data from a predetermined sensor that is a visible light image sensor that senses the intensity of light of the wavelength as the parameter, and generates the parameter data that is the data about the image of the capping sheet ,
Based on the received parameter data, of the capping sheet, a step of detecting a strain range in which the degree of unevenness is large,
Based on the distortion range of the capping sheet, a process of identifying a damage caution point where there is a high possibility of damage of the capping sheet,
A method for detecting caution points in a capping sheet, which includes a. A computer program for causing a computer to function as a device for detecting a damaged portion of a capping sheet,
The computer program stores the computer,
This is to detect a predetermined parameter related to the degree of unevenness which is the degree of unevenness of the surface of the capping sheet , and to generate parameter data which is data about the parameter , and to specify the visible light reflected by the capping sheet. Detecting the intensity of light of the wavelength as the parameter, from a predetermined sensor that is a visible light image sensor that generates the parameter data that is data about the image of the capping sheet, a receiving unit that receives the parameter data,
Based on the parameter data received by the receiving unit, of the capping sheet, the unevenness degree detecting unit for detecting a strain range in which the unevenness degree is large,
Based on the distortion range of the capping sheet, damage caution point detection means for specifying a damage caution point with a high possibility of damage of the capping sheet,
Der intended to function as is,
The unevenness degree detecting unit generates three-dimensional data that reproduces the three-dimensional shape of the capping sheet from the parameter data generated by the visible light image sensor received through the receiving unit, and the unevenness of each part is generated. By quantifying, the strain range is detected.
Computer program.

Images