High temperature portion visualization system

Abstract

To provide a high temperature portion visualization system for preventing occurrence of a fire by facilitating specification of a high temperature portion on a surface of a high temperature detection object.SOLUTION: A high temperature portion visualization system (100) includes a temperature detection unit (10) that detects a high temperature portion on a surface of a high temperature detection object, and a marking unit (20) that attaches a mark for indicating a position of the high temperature portion to the surface of the high temperature detection object when the high temperature portion is detected by the temperature detection unit (10).SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a high-temperature portion visualization system that identifies a high-temperature portion on the surface of an object to be detected for high temperature and visualizes the identified high-temperature portion. [Background technology]

[0002] For example, in various facilities such as factories and logistics centers, it is common to use conveyors such as belt conveyors to transport objects sequentially to their destinations. An example of such a facility is a waste incineration plant.

[0003] At waste disposal plants, waste collected by waste collection trucks is placed on the conveyor belt, transported to a waste pit, and dumped there. Non-combustible materials and recyclable waste are removed from the waste being transported by the conveyor belt, and the remaining combustible waste is transported to the waste pit.

[0004] The collected garbage may contain highly flammable items such as lithium-ion batteries and gas canisters for portable stoves, which can overheat and catch fire.

[0005] Furthermore, when an object being transported by a belt conveyor catches fire, there is a fire extinguishing system for extinguishing the burning object (see, for example, Patent Document 1) as follows: The fire extinguishing system according to Patent Document 1 sprays a foam fire extinguishing liquid or the like from a fire extinguishing agent spraying nozzle located above the belt conveyor when a powdered nitroso compound being transported by the belt conveyor catches fire for some reason. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-5998 [Non-patent literature]

[0007] [Non-Patent Document 1] Takashi Mukai and two others, "Thermal Runaway Mechanism and High Safety Technology of Lithium-ion Batteries" (https: / / www.jstage.jst.go.jp / article / sfj / 70 / 6 / 70_301 / _pdf) Summary of the Invention [Problem to be solved by the invention]

[0008] Conventionally, temperature sensors are used to sense waste on a conveyor belt, and if abnormally hot waste is detected, the conveyor belt is stopped and workers manually search for the object that is generating abnormal heat.

[0009] It is easy to find an object that has already caught fire and is emitting flames or smoke, but it is difficult to visually find an object that is emitting abnormal heat before it catches fire.

[0010] In Patent Document 1, foam fire extinguishing liquid or the like is sprayed over the entire conveyance path of the belt conveyor, and the location where the abnormal heat is occurring is not identified.

[0011] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a high-temperature portion visualization system that prevents the occurrence of fires by making it easier to identify high-temperature portions on the surface of an object to be detected for high temperatures. [Means for solving the problem]

[0012] The high-temperature portion visualization system according to the present disclosure includes a temperature detection unit that detects high-temperature portions on the surface of an object to be detected as a high-temperature detection target, and a marking unit that, when a high-temperature portion is detected by the temperature detection unit, marks the surface of the object to be detected as a high-temperature portion to indicate the position of the high-temperature portion. [Effects of the Invention]

[0013] According to the present disclosure, a high-temperature portion visualization system can be obtained that prevents the occurrence of fires by making it easier to identify high-temperature portions on the surface of an object to be detected for high temperatures. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a diagram illustrating a configuration example of a high-temperature portion visualization system according to a first embodiment of the present disclosure. [Figure 2] 2 is a diagram showing an aspect of the operation of the high-temperature portion visualization system shown in FIG. 1. FIG. [Figure 3] 2 is a flowchart showing an example of the operation of the system control unit shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, preferred embodiments of the high temperature portion visualization system of the present disclosure will be described with reference to the drawings. The high-temperature portion visualization system according to the present disclosure senses the surface of an object to be detected as a high temperature using a temperature sensor such as an infrared sensor, and when an abnormally hot surface portion is detected, a mark is attached to indicate the location, thereby visualizing the high-temperature portion so that it can be easily seen.

[0016] Embodiment 1 FIG. 1 is a diagram illustrating a configuration example of a high-temperature portion visualization system according to a first embodiment of the present disclosure.

[0017] The high-temperature portion visualization system 100 shown in FIG. 1 is assumed to be installed in a waste incineration plant, as an example.

[0018] In the waste disposal plant, garbage 81 collected by a garbage collection truck is temporarily placed on the conveying surface 51 of the belt conveyor 50, and is continuously transported as a collection of garbage to the garbage pit 60 by the belt conveyor 50.

[0019] Workers are stationed on one or both sides of the width of the belt conveyor 50, and perform the separation work by removing non-combustible materials and recyclable waste from the waste 81. Any combustible waste remaining after the separation work is then dropped into the waste pit 60, where it is temporarily stored until it is incinerated.

[0020] The width of the belt conveyor 50 is set to a size that allows the waste 81 to be spread out fairly uniformly and is easy for workers to work with, for example, about 700 mm to 800 mm.

[0021] In FIG. 1, the high temperature portion visualization system 100 includes a temperature detection unit 10, a marking unit 20, a system control unit 31, and a transport control unit 32.

[0022] The temperature detection unit 10 is an infrared sensor that remotely senses the temperature on the surface of the waste 81 placed on the belt conveyor 50. The temperature detection unit 10 is installed directly above the transport surface 51 of the belt conveyor 50, and performs sensing in the xy plane.

[0023] The marking unit 20 is a unit that marks a part of the surface of the waste 81 placed on the belt conveyor 50 with a colored mark.

[0024] The marking unit 20 is loaded with paint bullets 21, and an ejection port for ejecting the paint bullets 21 is provided at a position facing the conveying surface 51 of the belt conveyor 50. The marking unit 20 ejects the paint bullets 21 from the ejection port to partially color the surface of the waste 81 being conveyed.

[0025] Here, the diameter of the coloring by the paint bullets 21 is set to, for example, about 10 cm to 15 cm in order to ensure sufficient visibility.

[0026] The temperature detection unit 10 and the marking unit 20 are installed along the conveying direction of the belt conveyor 50. The marking unit 20 is installed downstream of the temperature detection unit 10 in the conveying direction of the belt conveyor 50.

[0027] The system control unit 31 is a unit for comprehensively controlling the entire high temperature portion visualization system 100. The transport control unit 32 is a unit for directly controlling the operation or stopping of the belt conveyor 50. In the first embodiment, the transport control unit 32 can stop the belt conveyor 50 in response to a stop command from the system control unit 31.

[0028] FIG. 2 is a diagram showing an aspect of the operation of the high temperature section visualization system 100 shown in FIG.

[0029] 2, it is assumed that an abnormally heated lithium ion battery 82 is mixed in with the dust 81. It is also assumed that a high temperature portion is exposed to the surface of the dust 81 due to thermal conduction.

[0030] When such dust 81 is transported by the belt conveyor 50 and reaches the detection position of the temperature detection unit 10, the temperature detection unit 10 detects a high temperature portion that appears on the surface of the dust 81.

[0031] When a high temperature portion is detected by the temperature detection unit 10, the system control unit 31 outputs a marking command to the marking unit 20. Upon receiving the marking command from the system control unit 31, the marking unit 20 fires a paint bullet 21.

[0032] This action causes the paint bullets 21 to land on the surface of the dust 81, forming marks M on the surface of the dust 81 that indicate the positions of the high-temperature portions.

[0033] Even if the lithium ion battery 82 has not yet ignited, the worker can use the position of the mark M to find the lithium ion battery 82 that is generating abnormal heat.

[0034] Furthermore, the system control unit 31 stops the belt conveyor 50 by outputting a stop command to the transport control unit 32. This makes it possible to prevent the abnormally hot lithium ion battery 82 from being dropped into the garbage pit 60.

[0035] FIG. 3 is a flowchart showing an example of the operation of the system control unit 31 shown in FIG.

[0036] In step S101, the system control unit 31 acquires the detected temperature from the temperature detection unit 10. Here, an image showing the temperature distribution is acquired as the detected temperature.

[0037] Then, in step S102, the system control unit 31 determines whether or not a high-temperature area whose temperature is equal to or higher than a set temperature has been detected in the temperature distribution image. This set temperature is a preset threshold value that indicates a temperature at which abnormal heat generation can be determined. Note that the set temperature may change dynamically depending on whether the ambient temperature is high or low.

[0038] Alternatively, the set temperature may be dynamically changed in conjunction with the type and material of the dust 81, which is the object of high temperature detection. For example, as described in Non-Patent Document 1, a mechanism is known in which the electrolyte and graphite-based negative electrode react at temperatures above 80°C, causing a chain reaction within the battery that ultimately leads to abnormal heat generation. By setting the set temperature to 80°C, it is possible to detect a lithium-ion battery in the early stages of abnormal heat generation from the temperature distribution image.

[0039] If no high temperature part is detected in step S102, the system control unit 31 returns the process to step S101. On the other hand, if a high temperature part is detected, the system control unit 31 advances the process to step S103.

[0040] In step S103, the system control unit 31 outputs a marking command to the marking unit 20 at a predetermined design timing. Here, the design timing is determined based on the transport speed of the belt conveyor 50, the distance between the temperature detection unit 10 and the marking unit 20, the height distance from the marking unit 20 to the transport surface 51 of the belt conveyor 50, the estimated height thickness of the dust 81, the injection speed of the paint bullets 21, etc.

[0041] Then, in step S104, the system control unit 31 outputs a stop command to the transfer control unit 32, thereby stopping the belt conveyor 50.

[0042] In addition, when the remaining distance to the garbage pit 60 is short during transport by the belt conveyor 50, it is necessary to stop the belt conveyor 50 quickly to prevent the garbage from being dropped into the garbage pit 60. In such a case, the order of steps S103 and S104 may be reversed, and the belt conveyor 50 may be stopped first. In this case, the above design timing is determined taking into consideration the deceleration speed of the belt conveyor 50.

[0043] In the first embodiment, when a high temperature portion is detected, a configuration is adopted in which paint is applied by firing paint bullets 21 so that marking can be performed quickly. On the other hand, if time constraints do not need to be taken into consideration, it is also possible to adopt a method in which paint is dripped or a method in which paint is applied by bringing marking portion 20 into direct contact with the surface of garbage 81.

[0044] In addition to the method of shooting paint bullets 21 as in the first embodiment, a method of shooting paint by using high-pressure air by using an air purge may also be used. Also, colored fire-extinguishing paint, paint bullets containing colored fire-extinguishing paint, etc. may also be used.

[0045] The color to be applied may also be switched depending on the surface temperature of the high-temperature detection object detected by the temperature detection unit 10. In this case, multiple ejection ports are provided in the marking unit 20, and paint bullets 21 of different colors are loaded into each ejection port. The system control unit 31 then selects from which ejection port to eject paint bullets 21 depending on the temperature detected by the temperature detection unit 10.

[0046] In addition to marking by color, marking using, for example, a laser pointer may be used. In this case, since the high temperature part moves due to the transport on the belt conveyor 50, a mechanism for tracking this may be provided.

[0047] Furthermore, in the first embodiment, the high-temperature portion visualization system 100 has been described as being installed in a waste incineration plant, but its use is not limited to this. For example, the high-temperature portion visualization system 100 may be used in a steel mill where combustible materials such as coal are transported on a conveyor belt, or in a manufacturing plant where highly flammable chemicals are packed in containers and transported on a conveyor belt. In such cases, it would be difficult to simply color the area, so marking using a laser pointer may be used.

[0048] In the first embodiment, the high temperature detection object is a collection of garbage continuously transported by the belt conveyor 50. However, as described above, the high temperature detection object may be an object other than garbage, such as a combustible material such as coal, or a drug.

[0049] That is, any configuration in which a plurality of objects are arranged in succession can be used as the object for high temperature detection.

[0050] Furthermore, in the first embodiment, the belt conveyor 50 is given as an example of the conveying unit, but it may also be a bucket conveyor that has multiple buckets connected in a ring shape to convey objects horizontally or vertically. It may also be a screw conveyor that conveys objects by rotating a spiral member about its axis. In addition to these, the conveying unit may be any unit that can convey objects to a destination.

[0051] In the first embodiment, the high temperature detection object is moved using the belt conveyor 50. Alternatively, the high temperature detection object may be stationary, and the set of the temperature detection unit 10 and the marking unit 20 may be moved along the arrangement direction of the high temperature detection object. In addition, both the set of the temperature detection unit 10 and the marking unit 20 and the high temperature detection object may be moved close to each other on the same axis.

[0052] For example, it is possible to provide a configuration without the system control unit 31 by providing the marking unit 20 with a small-scale unit equivalent to the system control unit 31. That is, the minimum configuration of the high temperature area visualization system 100 according to the first embodiment is sufficient to include the temperature detection unit 10 and the marking unit 20.

[0053] The high temperature portion visualization system 100 has the following features and can achieve the following effects.

[0054] The high-temperature portion visualization system 100 includes a temperature detection unit 10 that detects high-temperature portions on the surface of an object to be detected as a high-temperature. The high-temperature portion visualization system 100 also includes a marking unit 20 that, when a high-temperature portion is detected by the temperature detection unit 10, marks the object to be detected as a high-temperature portion with a mark M to indicate the position of the high-temperature portion.

[0055] Therefore, by visualizing high temperature areas so that they are easy to see, it is possible to easily identify areas where abnormal heat is being generated, thereby providing a high temperature area visualization system 100 that prevents the occurrence of fires.

[0056] Furthermore, when the object for high temperature detection is being transported by the transport unit, the temperature detection unit 10 detects a high temperature part on the surface of the object for high temperature detection being transported by the transport unit. When the temperature detection unit 10 detects a high temperature part, the marking unit 20 marks a mark M on the surface of the object for high temperature detection to indicate the position of the high temperature part.

[0057] This allows high temperature areas to be identified and marked while the object is being transported to the desired location.

[0058] The marking unit 20 also applies a mark M to the object for high temperature detection by partially coloring it. This visualization by coloring the object allows the mark M to continue to indicate the position of the high temperature area without quickly disappearing, making it easy to identify the high temperature area.

[0059] The marking unit 20 also applies partial coloring to the object to be detected for high temperature by firing paint bullets 21. This allows marking to be performed quickly after a high temperature area is detected.

[0060] The apparatus further includes a transport control unit 32 that stops the transport unit when a high-temperature portion is detected by the temperature detection unit 10. This makes it possible to prevent the high-temperature portion from reaching the destination location.

[0061] The temperature detection unit 10 and the marking unit 20 are installed along the conveying direction of the conveying unit, and the marking unit 20 is installed downstream of the temperature detection unit 10 in the conveying direction.

[0062] By arranging the materials in this order, the high temperature portions can be appropriately identified and marked according to the transport by the transport section.

[0063] The transport unit is a belt conveyor 50 installed in a waste incineration plant, which transports high temperature detection objects to a garbage pit 60. The high temperature detection objects are a collection of garbage placed on a transport surface 51 of the belt conveyor 50 and continuously transported by the belt conveyor 50.

[0064] This makes it possible to provide a high-temperature portion visualization system 100 that is specialized for use in waste incineration plants.

[0065] Furthermore, the marking section 3 is colored in a different color depending on the temperature detected by the temperature detection section 10. This also makes it possible to visualize the heat generation temperature. [Explanation of symbols]

[0066] 10 temperature detection unit, 20 marking unit, 21 paint bullet, 31 system control unit, 32 transport control unit, 50 belt conveyor (transport unit), 51 transport surface, 60 garbage pit, 81 garbage (high temperature detection object), 82 lithium ion battery, 100 high temperature part visualization system, M marker.

Claims

1. a temperature detection unit that detects a high temperature portion on the surface of the object to be detected; a marking unit that, when the high temperature portion is detected by the temperature detection unit, marks the surface of the high temperature detection object with a mark to indicate the position of the high temperature portion; A high temperature section visualization system.

2. Further, a transport unit that transports the high temperature detection object is provided. the temperature detection unit detects the high-temperature portion on the surface of the high-temperature detection object being transported by the transport unit, When the high temperature portion is detected by the temperature detection portion, the marking portion marks the mark for indicating the position of the high temperature portion on the surface of the high temperature detection object. The hot spot visualization system according to claim 1 .

3. The marking unit marks the high temperature detection object by partially coloring the object. The high-temperature portion visualization system according to claim 1 or 2.

4. 4. The high-temperature portion visualization system according to claim 3, wherein the marking unit performs the partial coloring by injecting paint bullets at the object for high temperature detection.

5. a conveyance control unit that stops the conveyance unit when the high-temperature portion is detected by the temperature detection unit; The hot spot visualization system according to claim 2 .

6. the temperature detection unit and the marking unit are installed along the conveying direction of the conveying unit, The marking unit is disposed downstream of the temperature detection unit in the conveying direction. The hot spot visualization system according to claim 2 .

7. The transport unit is a belt conveyor provided in a waste disposal plant that transports the high temperature detection object to a garbage pit, The high temperature detection object is a collection of garbage placed on the conveying surface of the belt conveyor and continuously conveyed by the belt conveyor. The hot spot visualization system according to claim 2 .

8. The marking portion is colored in a different color depending on the temperature detected by the temperature detection portion. The high temperature portion visualization system according to claim 3 .

Images