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JP-7854931-B2 - Fire prevention system

JP7854931B2JP 7854931 B2JP7854931 B2JP 7854931B2JP-7854931-B2

Inventors

  • 喜名 大輔
  • 西宮 立享
  • 瀬戸口 稔彦
  • 山本 研二

Assignees

  • 三菱重工業株式会社

Dates

Publication Date
20260507
Application Date
20221228

Claims (15)

  1. A first detection unit detects potential fire sources within the monitored object that show signs of fire based on first information obtained by sensing the monitored object or the space surrounding the monitored object, A second detection unit detects whether the fire source candidate detected by the first detection unit is a predetermined fire-protected object, based on the rate of change of brightness values included in the second information, which is obtained in more detail than the first information, A fire protection system is provided.
  2. An imaging unit that performs sensing by imaging the object to be monitored or the space surrounding the object to be monitored, A moving device that reduces the distance between the detector and the candidate fire source, The further comprising at least one of the following: The second information is acquired using the moving device or the telephoto function of the imaging unit. The fire prevention system according to claim 1.
  3. A fire protection device for fire protection treatment of the aforementioned fire protection target, A control device that, when the second detection unit detects that the candidate fire source is the target of the fire prevention, causes the fire prevention device to perform the fire prevention treatment, It also has the following features: The fire prevention system according to claim 1.
  4. The system further comprises an imaging unit that performs sensing by imaging the object to be monitored or the space surrounding the object to be monitored, The second information is obtained by processing the sensing results by the imaging unit to enlarge them. The fire prevention system according to claim 3.
  5. The aforementioned fire protection device includes multiple fire protection devices installed in different locations. The control device selects which of the multiple fire protection devices to use for the fire protection treatment based on the state of the fire-protected object obtained from the detection result of the second detection unit. The fire prevention system according to claim 3.
  6. The aforementioned fire protection device includes multiple fire protection devices with different fire extinguishing methods, The control device selects which of the multiple fire protection devices to use for the fire protection treatment based on the state of the fire-protected object obtained from the detection result of the second detection unit. The fire prevention system according to claim 3.
  7. The aforementioned multiple fire prevention devices include a first fire prevention device that uses a removal fire extinguishing method or a suffocation fire extinguishing method, and a second fire prevention device that uses a water spraying fire extinguishing method. The fire prevention system according to claim 6.
  8. A transport device for transporting the object to be monitored, A fire protection device that receives the object to be monitored transported by the transport device and fire-prevents the received object to be monitored, When the second detection unit detects that the candidate fire source on the transport device is the target of the fire prevention, a control device controls the transport device so that the candidate fire source moves toward the fire prevention device. It also has the following features: A fire prevention system according to any one of claims 1 to 7.
  9. When the first detection unit detects the fire source candidate, the control device continues sensing the fire source candidate being transported by the transport device. The fire prevention system according to claim 8.
  10. The transport device has a plurality of conveyors, each of which transports the object to be monitored. The fire protection device comprises a plurality of fire protection devices, each of which is arranged to be able to receive the object to be monitored, which is transported by one or more conveyors included in the plurality of conveyors. The fire prevention system according to claim 8.
  11. When the control device detects that the candidate fire source on the transport device is the fire-protected object, the control device selects a fire-protected device from among the plurality of fire-protected devices to accept the fire-protected object, based on criteria indicating the time from the detection timing to the timing of the fire outbreak. The fire prevention system according to claim 10.
  12. The control device derives the criteria based on the second information obtained with respect to the fire source candidate and the temperature trend of the monitored object predicted based on the temperature rise profile obtained in advance for each type of monitored object. The fire prevention system according to claim 11.
  13. When the control device receives the second information obtained regarding the fire source candidate, it derives the criteria using a trained model that has been trained to output the criteria, The aforementioned trained model is The temperature trend of the object to be monitored, which has been predicted in advance for each type of object to be monitored, A temperature rise profile acquired in advance for each type of object being monitored, A training step is repeatedly performed in which a training dataset containing at least one of the following is input, so that the system is trained to output the criteria corresponding to the input. The fire prevention system according to claim 12.
  14. The control device is An acquisition unit that acquires the second information at multiple points in time with respect to the aforementioned fire source candidate, An information processing unit derives at least one of the remaining time until the timing of fire occurrence for the candidate fire source and the content of fire prevention measures for the candidate fire source, based on state change information showing the time change of the state until fire occurrence, obtained by experiment or simulation for multiple ignition sources with different conditions, or a trained model trained using the state change information, and the second information at multiple time points in a time series obtained by the acquisition unit. Having, A fire prevention system according to any one of claims 3 to 7.
  15. A detection unit that detects potential fire sources within the monitored object that show signs of fire based on information obtained by sensing the monitored object or the space surrounding the monitored object, A derivation unit that derives the remaining time from the detection of the fire source candidate to the timing of fire outbreak based on the rate of change of brightness values included in the information obtained with respect to at least the fire source candidate, A fire protection system is provided.

Description

This disclosure relates to a fire prevention system. Patent Document 1 discloses a waste treatment facility comprising a crusher for crushing waste, a conveyor for transporting the crushed waste, and a chute for guiding the waste from downstream of the conveyor to the next process. The fire prevention device of this waste treatment facility includes a blocking means that blocks the passage of the chute based on a signal from a fire and/or explosion detection means provided on the conveyor, and a watering means that fills the blocked chute with water. Patent Document 2 discloses a monitoring system that transmits image data output from an infrared camera to a receiving terminal connected to a network. The receiving terminal includes a fire detection means for detecting a fire from the transmitted image data, and a display means for displaying the fire information detected by the fire detection means. Japanese Patent Publication No. 2015-6649Japanese Patent Publication No. 2009-100198 This is a schematic diagram of a fire prevention system according to the first embodiment of this disclosure.This is a functional block diagram of a control device according to the first embodiment of this disclosure.This flowchart shows an example of the operation of the control device according to the first embodiment of this disclosure.This is a schematic diagram of a fire prevention system according to the second embodiment of this disclosure.This is a perspective view showing a part of the transport device and a chute section according to the second embodiment of this disclosure.This is a functional block diagram of a control device according to the second embodiment of this disclosure.This figure illustrates the tracking imaging of the imaging unit by the adjustment unit according to the second embodiment of this disclosure.This graph shows the relationship between the field of view of the imaging unit and the temperature of the detected object being monitored according to the second embodiment of this disclosure.This diagram shows the fire prevention equipment at the destination of a candidate fire source according to the second embodiment of this disclosure, corresponding to its position on the conveyor.A flowchart illustrating an example of the operation of a control device according to the second embodiment of this disclosure.This figure shows the state of the object being monitored on the transport device according to the fourth embodiment of this disclosure.This diagram schematically shows the situation when an ignition source is included in the object to be monitored on the transport device according to the fourth embodiment of this disclosure.This diagram illustrates the changes in the state of potential ignition sources over time, based on the location of the ignition source.This diagram shows the correspondence between the time axis and surface temperature (a), and the correspondence between the time axis and the heat generation rate (b), for each type of monitored object (i to iii) that includes an ignition source.This is a functional block diagram of a control device according to the fourth embodiment of this disclosure.This flowchart shows an example of the operation of the control device according to the fourth embodiment of this disclosure.This is a schematic diagram of a fire protection system according to another embodiment of the present disclosure.This is a hardware configuration diagram showing the configuration of a computer according to the embodiments of this disclosure. The following describes the configuration for implementing the fire protection system 100, referring to the attached drawings. <First embodiment of the fire prevention system> The fire prevention system 100 is a system that operates in a waste treatment plant that processes, for example, municipal solid waste or industrial waste. The fire prevention system 100 prevents fires from occurring in the materials being processed in the waste treatment plant. In this specification, the materials being processed in the waste treatment plant are referred to as "monitored materials T". As shown in Figure 1, the fire prevention system 100 includes, for example, an imaging unit 1, a mobile device 2, a detector 3, a fire prevention device 4, and a control device 5. (Imaging Department) The imaging unit 1 is a camera that captures an overall image of the surface of the object to be monitored T stored in a predetermined space from above in the vertical direction Dv. Hereinafter, the predetermined space in which the object to be monitored T is stored will be referred to as the "storage space R1". The imaging unit 1 generates a visible light image of the surface of the object to be monitored T stored in the storage space R1 and transmits the generated visible light image to the control device 5 described later. Note that the imaging unit 1 may be a camera that generates infrared or ultraviolet images instead of visible light images. (Mobile device) Th