Fire monitoring system

Abstract

To provide a fire monitoring system that assists in determining when selecting zones to be water-discharged based on videos from a monitoring camera.SOLUTION: A fire monitoring system includes: a fire detector that is installed in each detection zone set up within a tunnel; a projection device that is installed in each water discharge zone set up within the tunnel; and display control means that controls the projection device that is installed in the water discharge zone corresponding to the detection zone where the fire detector is installed, when the fire detector detects a fire, and projects an image for identifying the water discharge zone or the boundary of the water discharge zone onto a wall surface of a tunnel, a road surface, or a ceiling.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a fire monitoring system. [Background technology]

[0002] Disaster prevention systems for monitoring fires in tunnels are known. For example, the tunnel disaster prevention system described in Patent Document 1 comprises disaster prevention terminal devices, such as water spray fire extinguishing devices and fire detectors, installed in each of the multiple compartments along the tunnel's length, and a disaster prevention panel that exchanges control information with these disaster prevention terminal devices. When the disaster prevention panel of this system receives a fire signal from a fire detector and is in automatic water discharge mode, it controls the automatic water spray valve in the compartment where the fire detector that detected the fire is located, discharging water from the multiple water spray heads in that compartment. On the other hand, when the disaster prevention panel is in manual water discharge mode, it controls the automatic water spray valve in response to the observer's operation to discharge water. In this case, the tunnel disaster prevention system is equipped with an ITV camera, and the observer operates the system while viewing the video from the ITV camera. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-061400 Summary of the Invention [Problem to be solved by the invention]

[0004] When the manual water spraying mode is selected in the above system, the monitor must select the section to spray water on while watching the ITV camera footage. In this case, if a fire occurs at the border of sections, it can be difficult to determine which section the fire is in. Also, because it is an emergency, the monitor may not be able to calmly judge the section and may not be able to reliably select the appropriate section to spray water on. The present invention has been made in consideration of such circumstances, and aims to assist in making decisions when selecting a section to spray water on based on images from a surveillance camera. [Means for solving the problem]

[0005] In order to solve the above problems, the fire monitoring system of the present invention comprises a fire detector installed in each detection zone set up within the tunnel, a projection device installed in each water discharge zone set up within the tunnel, and a display control means which, when a fire is detected by the fire detector, controls the projection device installed in the water discharge zone corresponding to the detection zone in which the fire detector is installed, to project an image onto the wall, road surface or ceiling of the tunnel to enable identification of the water discharge zone or the boundary of the water discharge zone. [Effects of the Invention]

[0006] According to the present invention, it is possible to assist in making a decision when selecting a section to spray water on based on images from a surveillance camera. [Brief explanation of the drawings]

[0007] [Figure 1] Figure 1 shows an example of a fire monitoring system for a tunnel. [Figure 2] FIG. 2 shows an example of the installation of terminal equipment. [Figure 3] FIG. 3 shows an example of the installation of the projector 117. [Figure 4] FIG. 4 shows an example of the configuration of the disaster prevention receiving panel 102. [Figure 5] FIG. 5 shows an example of a fire extinguishing operation. [Figure 6] FIG. 6 shows an example of a boundary line image. [Figure 7] FIG. 7 shows another example of a boundary line image. DETAILED DESCRIPTION OF THE INVENTION

[0008] 1. Example An embodiment of the present invention will be described with reference to the drawings. 1-1.Configuration FIG. 1 shows an example of a fire monitoring system for a tunnel according to one embodiment of the present invention. The fire monitoring system 100 shown in the figure includes multiple fire detectors 101, a disaster prevention receiving panel 102, multiple automatic valve devices 103, a pump control panel 104, multiple signal converters 105, remote monitoring and control equipment 106, multiple CCTV cameras 107, a CCTV operation terminal 108, and multiple projectors 117.

[0009] Of these, multiple fire detectors 101 are installed in each detection zone set up inside the tunnel 115 along the direction of vehicle travel. Each fire detector 101 is a twin-lens type flame detector, equipped with a right flame detection section that monitors the detection zone on the right side as seen from the device, and a left flame detection section that monitors the detection zone on the left side. Each fire detector 101 is installed near the boundary of the detection zone and monitors two detection zones simultaneously. Therefore, one detection zone is monitored by two fire detectors 101 in a redundant manner. The arrows in Figure 2 indicate the monitoring directions of the fire detectors 101.

[0010] Each fire detector 101 is connected to a disaster prevention receiving panel 102 via a line, and when it detects a fire, it outputs a fire signal to the disaster prevention receiving panel 102. At that time, the output fire signal includes information identifying the direction of detection.

[0011] Disaster prevention receiving panel 102 is installed in electrical room 112 near the entrance of tunnel 115. Disaster prevention receiving panel 102 is connected to fire detector 101, signal converter 105, and pump control panel 104 via lines. When disaster prevention receiving panel 102 receives a fire signal from fire detector 101, it controls pump control panel 104 to start fire pump 113. Disaster prevention receiving panel 102 also identifies a water discharge compartment corresponding to the detection compartment where a fire has been detected, and controls signal converter 105 of the identified water discharge compartment to open the automatic valve. As a result, water is discharged in the identified water discharge compartment.

[0012] The disaster prevention receiving panel 102 is also connected to the remote monitoring and control equipment 106 via a communication network. The disaster prevention receiving panel 102 receives control signals output from the remote monitoring and control equipment 106 and controls the pump control panel 104 and the automatic valve device 103. Therefore, a supervisor operating the remote monitoring and control equipment 106 can manually control the water discharge.

[0013] The disaster prevention receiving panel 102 is also connected to a projector 117 via a line. When a fire is detected by the fire detector 101, the disaster prevention receiving panel 102 identifies a water discharge zone corresponding to the detection zone in which the detector is installed, and controls the projector 117 installed in the identified water discharge zone. This causes the projector 117 to project a boundary line image (see FIG. 6) that enables identification of the identified water discharge zone, the adjacent water discharge zone, and the boundary between the two water discharge zones. The projected image will be described in detail later.

[0014] A plurality of automatic valve devices 103 are installed in each water discharge section set up inside the tunnel 115 along the direction of vehicle travel. The primary side of each automatic valve device 103 is connected to a water supply pipe 109, and the secondary side is connected to a water spray pipe 110. A plurality of water spray heads 111 are connected to the other end of the water spray pipe 110. The plurality of water spray heads 111 are installed above the side wall of the tunnel at intervals of, for example, 5 m.

[0015] Each automatic valve device 103 is connected via a line to a corresponding signal converter 105. Each automatic valve device 103 opens and closes an automatic valve upon receiving a control signal output from the corresponding signal converter 105. When the automatic valve is opened, fire extinguishing water is supplied from the water supply pipe 109 to the water spray pipe 110.

[0016] The pump control panel 104 is installed in an electrical room 112 near the entrance of the tunnel 115. The pump control panel 104 is connected to the disaster prevention receiving panel 102 via a line. The pump control panel 104 starts or stops the fire pump 113 in response to a control signal output from the disaster prevention receiving panel 102. When the fire pump 113 starts, it pressurizes the fire water stored in the water tank 114 and supplies it to the water supply pipe 109.

[0017] A plurality of signal converters 105 are installed in each water discharge section inside the tunnel 115. Each signal converter 105 is connected via a line to the disaster prevention receiving panel 102 and the corresponding automatic valve device 103. Each signal converter 105 receives a control signal output from the disaster prevention receiving panel 102 and opens or closes the automatic valve of the corresponding automatic valve device 103.

[0018] The remote monitoring and control equipment 106 is installed in a tunnel control room 116 located away from the tunnel 115. The remote monitoring and control equipment 106 is connected to the disaster prevention receiving panel 102 via a communication network, and transmits and receives signals to and from the disaster prevention receiving panel 102. As an example, the remote monitoring and control equipment 106 outputs a signal to the disaster prevention receiving panel 102 to control the fire pump 113 or the automatic valve device 103 in response to an operation by a monitor.

[0019] A plurality of CCTV cameras 107 are installed in a tunnel 115 along the direction of vehicle travel. Each CCTV camera 107 is connected to a CCTV operation terminal 108 via a communication network, and outputs a video signal to the CCTV operation terminal 108.

[0020] The CCTV operation terminal 108 is installed in the tunnel control room 116. The CCTV operation terminal 108 has a display that displays the camera images output from each connected CCTV camera 107. By viewing this camera image, a monitor can visually confirm the situation inside the tunnel 115. Therefore, if a fire breaks out in the tunnel 115, the monitor can confirm the status of the fire through the camera image. In this case, the monitor can determine the water spray area to be targeted based on the camera image, and operate the remote monitoring and control equipment 106 to spray water on that area.

[0021] Multiple projectors 117 are installed in the tunnel 115 for each water discharge compartment. Each projector 117 is an optical projection device for projecting an image onto the wall of the tunnel 115. Each projector 117 is connected to the disaster prevention receiving panel 102 via a line and projects a boundary line image onto the wall of the tunnel 115 in response to a control signal output from the disaster prevention receiving panel 102. The projected boundary line image is an image that enables identification of the water discharge compartment in which the projector 117 is installed, the adjacent water discharge compartment, and the boundary between the two water discharge compartments (see FIG. 6). Here, the image that enables identification of the water discharge compartment is an image that displays identification information for the water discharge compartment. A monitor operating the remote monitoring and control equipment 106 can easily determine which water discharge compartment the fire source belongs to by viewing this projected image through camera footage. This effect is particularly noticeable when a fire occurs at the boundary between compartments.

[0022] Next, an example of installation of terminal devices such as the fire detector 101 will be described with reference to Fig. 2. Fig. 2 is a diagram showing an example of installation of terminal devices such as the fire detector 101. The tunnel 115 shown in the figure has multiple zones A to Z. In this example, the ranges of the detection zone and the water discharge zone overlap, and for example, zone A serves as both a detection zone and a water discharge zone.

[0023] In this tunnel 115, multiple fire detectors 101 are installed near the boundaries of the detection zones. One detection zone is monitored by two fire detectors 101 in an overlapping manner. The arrows in Figure 2 indicate the monitoring directions of the fire detectors 101.

[0024] Additionally, multiple CCTV cameras 107 are installed in this tunnel 115. Each CCTV camera 107 is installed on the wall opposite the fire detector 101, and the shooting range of each CCTV camera 107 includes the wall on the fire detector 101 side.

[0025] Additionally, multiple projectors 117 are installed in this tunnel 115. Each projector 117 is installed near the boundary of the water discharge section. Each projector 117 is installed on the wall opposite the fire detector 101, and is installed facing the wall on the detector side. The projected image of each projector 117 is included in the shooting range of the CCTV camera 107. Therefore, a monitor in the tunnel control room 116 can visually confirm the projected image of the projector 117 through the camera image.

[0026] An example of installation of the projector 117 will be further described with reference to Fig. 3. Fig. 3 is a diagram showing an example of installation of the projector 117. In the installation example shown in the figure, the projector 117 is installed above the wall surface of the tunnel 115. The projector 117 projects an image 301 (see FIG. 6) onto the wall surface on the opposite side.

[0027] Next, the disaster prevention receiving panel 102 will be described in more detail with reference to Fig. 4. Fig. 4 is a diagram showing an example of the configuration of the disaster prevention receiving panel 102. The disaster prevention receiving panel 102 includes a main storage device 401 such as a RAM, an auxiliary storage device 402 such as a HDD, a processor 403 such as a CPU, an input / output interface 404, and a communication interface 405 such as a network card.

[0028] The disaster prevention receiving panel 102 also includes a display 406, an operation unit 407, and a speaker 408. These devices are each connected to the input / output interface 404.

[0029] The main memory device 401 described above stores various programs. These programs can be distributed via non-transitory storage media or networks such as the Internet. When the processor 403 executes these programs, various functions are realized. The realized functions include a water discharge compartment identification unit 411, a pump control unit 412, an automatic valve control unit 413, and a display control unit 414. Each function will be described below.

[0030] The water discharge compartment identification unit 411 receives a fire signal output from the fire detector 101 and identifies the water discharge compartment corresponding to the detection compartment in which the detector is installed. At that time, the water discharge compartment identification unit 411 identifies the water discharge compartment by referring to terminal device information and water discharge pattern information, which will be described later.

[0031] Pump control unit 412 outputs a control signal to pump control panel 104. Specifically, pump control unit 412 receives a fire signal output from fire detector 101 and outputs a start signal to pump control panel 104. Pump control panel 104 starts fire pump 113 upon receiving this start signal.

[0032] The pump control unit 412 outputs a start signal to the pump control panel 104 when a start operation is performed on the operation unit 407 or when a start signal is received from the remote monitoring and control equipment 106 .

[0033] Furthermore, when a stop operation is performed on the operation unit 407 or when a stop signal is received from the remote monitoring and control equipment 106, the pump control unit 412 outputs a stop signal to the pump control panel 104. Upon receiving this stop signal, the pump control panel 104 stops the fire pump 113.

[0034] The automatic valve control unit 413 outputs a control signal for the automatic valve device 103 to the signal converter 105. Specifically, the automatic valve control unit 413 receives a fire signal output from the fire detector 101 and outputs an open control signal for the automatic valve device 103 to the signal converter 105 of the water discharge compartment identified by the water discharge compartment identification unit 411. The signal converter 105 receives this open control signal and opens the automatic valve of the corresponding automatic valve device 103.

[0035] In addition, the automatic valve control unit 413 outputs an open control signal for the automatic valve device 103 to a manually specified signal converter 105 when an open control operation is performed on the operation unit 407 or when an open control signal is received from the remote monitoring and control equipment 106.

[0036] Furthermore, when a close control operation is performed on the operation unit 407 or when a close control signal is received from the remote monitoring and control equipment 106, the automatic valve control unit 413 outputs a close control signal for the automatic valve device 103 to a manually specified signal converter 105. Upon receiving this close control signal, the signal converter 105 closes the automatic valve of the corresponding automatic valve device 103.

[0037] The display control unit 414 outputs a control signal to the projector 117. Specifically, the display control unit 414 receives a fire signal output from the fire detector 101 and outputs an activation signal to the projector 117 of the water discharge section identified by the water discharge section identification unit 411. The output activation signal includes data of a projection image. In response to this activation signal, the projector 117 projects a boundary line image (see FIG. 6 ) onto the wall surface of the tunnel 115.

[0038] In addition, the display control unit 414 outputs a start-up signal to a manually specified projector 117 when a start-up operation is performed on the operation unit 407 or when a start-up signal is received from the remote monitoring and control equipment 106.

[0039] Furthermore, when a stop operation is performed on the operation unit 407 or when a stop signal is received from the remote monitoring and control equipment 106, the display control unit 414 outputs a stop signal to the manually specified projector 117. Upon receiving this start signal, the projector 117 stops projecting the boundary line image.

[0040] Next, the auxiliary storage device 402 will be described. The auxiliary storage device 402 stores terminal device information 421 and water discharge pattern information 422. Of these, the terminal device information 421 is information that indicates the installation areas of the fire detector 101, the automatic valve device 103, and the projector 117. For the fire detector 101, this information indicates the detection area for each of the left and right detection units, and for the automatic valve device 103 and the projector 117, it indicates the water discharge area. This information is set by the user of the disaster prevention receiving panel 102. The above-mentioned water discharge area identification unit 411 refers to this terminal device information 421 to identify the installation area of ​​each terminal device.

[0041] On the other hand, the water discharge pattern information 422 is information indicating the correspondence between the detection compartment and the water discharge compartment. This water discharge pattern information 422 is set by the user of the disaster prevention receiving panel 102. The water discharge compartment identification unit 411 refers to this water discharge pattern information 422 to identify the water discharge compartment that corresponds to the detection compartment in which the fire was detected.

[0042] 1-2.Operation Next, the fire extinguishing operation of the fire monitoring system 100 will be described with reference to Fig. 5. Fig. 5 is a sequence diagram showing an example of the fire extinguishing operation.

[0043] First, when a vehicle fire breaks out in tunnel 115 and is detected by fire detector 101 (step 501), the detector outputs a fire signal to disaster prevention receiving panel 102 (step 502). Pump control unit 412 of disaster prevention receiving panel 102 receives this fire signal and outputs an activation signal to pump control panel 104 (step 503). Pump control panel 104 receives this activation signal and activates fire pump 113 (step 504). When fire pump 113 is activated, it pressurizes fire-fighting water stored in water tank 114 and supplies it to water supply piping 109.

[0044] Furthermore, the water discharge compartment identification unit 411 of the disaster prevention receiving panel 102 receives the fire signal and identifies the water discharge compartment corresponding to the detection compartment where the fire was detected (step 505). Next, the automatic valve control unit 413 of the disaster prevention receiving panel 102 outputs an open control signal for the automatic valve device 103 to the signal converter 105 of the water discharge compartment identified by the water discharge compartment identification unit 411 (step 506). In response to this open control signal, the signal converter 105 opens the automatic valve of the corresponding automatic valve device 103 (step 507). As a result, dispersed water discharge is performed from the water spray heads 111 installed in the identified water discharge compartment, thereby suppressing the fire and preventing the fire from spreading.

[0045] Furthermore, the display control unit 414 of the disaster prevention receiving panel 102 outputs an activation signal to the projector 117 of the water discharge area identified by the water discharge area identification unit 411 (step 508). Upon receiving this activation signal, the projector 117 projects a boundary line image onto the wall surface of the tunnel 115 (step 509).

[0046] 6 shows an example of the boundary line image, which are boundary line images 601 and 602. The boundary line images 601 and 602 are projected onto a wall surface 609 of the tunnel 115. Boundary line image 601 is an image showing the boundary line between water discharge section A and water discharge section B. This boundary line image 601 shows identification information 603 of water discharge section B, which is the target of water discharge, identification information 604 of water discharge section A adjacent to water discharge section B, and boundary line 605 between water discharge sections B and A, which is sandwiched between the identification information 603 and 604. This boundary line image 601 is projected by projector 117 installed near the boundary between water discharge sections B and A.

[0047] On the other hand, boundary line image 602 is an image showing the boundary line between water discharge section B and water discharge section C. This boundary line image 602 shows identification information 606 of water discharge section B, which is the target of water discharge, identification information 607 of water discharge section C adjacent to water discharge section B, and boundary line 608 between water discharge sections B and C, sandwiched between the identification information 606 and 607. This boundary line image 602 is projected by projector 117 installed near the boundary between water discharge sections B and C.

[0048] The boundary line images 601 and 602 are projected by separate projectors 117 when the water discharge section B is identified as the water discharge target in step 505 above.

[0049] A monitor operating the remote monitoring and control equipment 106 can easily determine whether the fire source is contained in the compartment to be sprayed with water by viewing these projected images through the camera video. If the monitor confirms that the fire source is not contained in the compartment to be sprayed with water but is contained in an adjacent compartment, the monitor can manually operate the remote monitoring and control equipment 106 to designate the adjacent compartment as the target for spraying with water.

[0050] Returning to the description of the fire extinguishing operation 500. After step 509 is executed, when a fire signal output from another fire detector 101 is received by the disaster prevention receiving panel 102, steps 505 to 509 are executed for that fire signal. Steps 505 to 509 are executed every time the disaster prevention receiving panel 102 receives a fire signal from a new fire detector 101. This concludes the description of the fire extinguishing operation 500.

[0051] When the fire is extinguished after the execution of the fire extinguishing operation 500 described above, the supervisor in the tunnel control room 116 manually performs recovery operations. Specifically, the supervisor operates the remote monitoring and control equipment 106 to stop the fire pump 113, close the automatic valve device 103, and stop the projection of the projector 117.

[0052] 2. Variations The above embodiment may be modified as follows: The following modifications may be combined with each other. (1) Display of boundary lines In the above embodiment, the boundary lines are shown as solid lines in the boundary line image (see FIG. 6). However, as long as the boundary of the water discharge section can be identified, it may be shown as other lines (for example, dashed lines or wavy lines).

[0053] (2) Display of identification information In the above embodiment, the identification information of the water discharge section is shown in alphabetical order in the boundary line image (see FIG. 6). However, alphabetical order is merely an example of the identification information, and the identification information may be expressed as a number, symbol, or section name.

[0054] (3) Display mode of boundary line image In the above embodiment, the boundary line image is an image projected showing the identification information of two adjacent water discharge compartments and the boundary line between the two water discharge compartments (see FIG. 6). However, the boundary line image is not limited to this, as long as it is an image that can determine whether or not a fire source is included in a water discharge compartment. For example, the boundary line may be omitted from the boundary line image. Even if the boundary line is omitted, as long as the identification information of the two adjacent water discharge compartments is shown, it is possible to roughly determine whether or not the fire source is included in the water discharge compartment based on the positional relationship between the fire source and the identification information. For example, using the example of FIG. 6, if the fire source is located to the left of the identification information "A" in the boundary line image 601, it can be determined that the fire source is not included in the compartment to be water discharged, and if the fire source is located to the right of the identification information "B," it can be determined that the fire source is included in the compartment to be water discharged.

[0055] As another example, the identification information of the water discharge compartments that are not the target of water discharge may be omitted from the boundary line image. For example, in the example of Figure 6, the identification information "A" may be omitted from the boundary line image 601. Even if the identification information of the water discharge compartment that is not the target of water discharge is omitted, it is possible to determine whether the fire source is included in the water discharge compartment as long as the identification information of the water discharge compartment that is the target of water discharge is shown. Furthermore, by looking at the identification information "B," it is easy to guess that the adjacent water discharge compartment is "A."

[0056] As another example, the boundary image may show only the boundary lines. Even if elements other than the boundary lines are omitted, by checking the positional relationship between the two boundary lines of the compartment to be water-sprayed and the fire source, it is possible to determine whether the fire source is included in the compartment to be water-sprayed.

[0057] (4) Projection location In the above embodiment, the boundary line image is projected onto the wall surface of the tunnel 115 (see FIG. 6). However, the boundary line image may be projected onto a location other than the wall surface as long as it is within the shooting range of the CCTV camera 107. For example, the boundary line image may be projected onto the road surface or ceiling of the tunnel 115.

[0058] (5)Functional layout In the above embodiment, the disaster prevention receiving panel 102 is equipped with the display control unit 414. However, other devices may also be equipped with this function. For example, the remote monitoring and control equipment 106 may be equipped with this function. Alternatively, other information processing devices that are directly or indirectly connected to the disaster prevention receiving panel 102 for communication may be equipped with this function.

[0059] (6) Projection control target In the above embodiment, a boundary line image is projected onto the projectors 117 of the section that is the target of water spraying. For example, in the example shown in FIG. 6, boundary line images 601 and 602 are projected onto the two projectors 117 that correspond to section B that is the target of water spraying. In addition to this, a boundary line image may be projected onto the projectors 117 of the section adjacent to the target of water spraying. For example, in the example shown in FIG. 6, a boundary line image may be projected onto the projector 117 that corresponds to section C that is the target of water spraying. Note that this projection process is controlled by the display control unit 414 of the disaster prevention receiving panel 102.

[0060] FIG. 7 is a diagram showing another example of the boundary line image. In addition to boundary line images 601 and 602, a boundary line image 701 is projected onto the wall surface 609 of the tunnel 115 shown in the figure. This boundary line image 701 is an image that shows the boundary line between water discharge section C and water discharge section D. This boundary line image 701 shows identification information 702 of water discharge section C that is adjacent to the water discharge target, identification information 703 of water discharge section D that is adjacent to water discharge section C, and a boundary line 704 between water discharge sections C and D that is sandwiched between the identification information 702 and 703. This boundary line image 701 is projected by a projector 117 that is installed near the boundary between water discharge sections C and D.

[0061] By projecting the boundary line image 701 in this manner, even if the identification information "B" and "C" on the boundary line image 602 cannot be identified due to smoke, the observer can infer that the boundary line 608 on the boundary line image 602 is the boundary line between sections "B" and "C" by checking the identification information "C" and "D" on the boundary line image 701.

[0062] As another modification, boundary line images may be projected not only by the projector 117 in the section to be sprayed with water, but also by all the projectors 117 in the tunnel 115 .

[0063] (7) Border image color In the above embodiment, the display control unit 414 may project the boundary line image using a color according to the order of projection. For example, the first projector 117 may be made to project a red boundary line image, and the second projector 117 may be made to project a blue boundary line image. By changing the color of the boundary line image according to the order of projection in this way, the observer can understand the order of projection (in other words, the order of fire detection) just by looking at the boundary line image.

[0064] As another example, the display control unit 414 may project a boundary line image using a color that corresponds to the amount of time that has passed since the occurrence of a fire. For example, after the occurrence of a fire, the projector 117 that projects within a predetermined time may be made to project a red boundary line image, and the projector 117 that projects after the predetermined time has passed may be made to project a blue boundary line image. By changing the color of the boundary line image in this way according to the passage of time, the observer can understand the speed of projection (in other words, the speed of fire detection) simply by looking at the boundary line image.

[0065] As yet another example, the display control unit 414 may project the boundary line image using a color that corresponds to the time that has elapsed since the start of projection. For example, the display control unit 414 may cause the projector 117 to project a red boundary line image at the start of projection, and may cause the projector 117 to project a blue boundary line image after a predetermined time has elapsed since the start of projection. By changing the color of the boundary line image in this way as time elapses, the observer can know the time that has elapsed since the start of projection simply by looking at the boundary line image.

[0066] (8) Location of CCTV camera 107 In the above embodiment, the CCTV camera 107 is installed on the wall opposite the fire detector 101. However, this installation method is merely an example, and the CCTV camera 107 may be installed on the wall on the same side as the fire detector 101. In that case, the projector 117 is also installed on the wall on the same side as the fire detector 101 so that the projected image is included in the shooting range of the CCTV camera 107.

[0067] (9) Other variations The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, or to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

[0068] Furthermore, the above-described configurations, functions, processing units, processing means, etc. may be partially or entirely implemented in hardware, for example, by designing them as integrated circuits. The above-described configurations, functions, etc. may also be implemented in software, with a processor interpreting and executing a program that implements each function. Information such as the programs, tables, and files that implement each function can be stored in a memory, a recording device such as a hard disk or SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.

[0069] In addition, the control lines and information lines shown are those that are considered necessary for the explanation, and do not necessarily show all the control lines and information lines in the product. In reality, it can be assumed that almost all components are interconnected. The above-described embodiments disclose at least the configurations described in the claims. [Explanation of symbols]

[0070] 100...fire monitoring system, 101...fire detector, 102...disaster prevention receiving panel, 103...automatic valve device, 104...pump control panel, 105...signal converter, 106...remote monitoring and control equipment, 107...CCTV camera, 108...CCTV operation terminal, 109...water supply pipe, 110...water spray pipe, 111...water spray head, 112...electrical room, 113...fire pump, 114...water tank, 115...tunnel, 116...tunnel control room, 117...projector, 301...image, 601, 602...boundary line image, 603, 604, 606, 607...identification information, 605, 608...boundary line, 609...wall, 701...boundary line image, 702, 703...identification information, 704...boundary line

Claims

1. Fire detectors are installed in each detection zone within the tunnel, a projection device installed in each water discharge section set up in the tunnel; a display control means for controlling a projection device installed in a water discharge section corresponding to the detection section in which the fire detector is installed when a fire is detected by the fire detector, and for projecting an image onto the wall, road surface or ceiling of the tunnel to make the water discharge section or the boundary of the water discharge section identifiable; A fire monitoring system equipped with:

2. The fire monitoring system according to claim 1 , wherein the image indicates identification information of the water discharge compartment.

3. The fire monitoring system according to claim 1, wherein the image indicates identification information of the water discharge compartment and identification information of a water discharge compartment adjacent to the water discharge compartment.

4. 2. The fire monitoring system according to claim 1, wherein the display control means further controls a projection device adjacent to the projection device to project an image indicating identification information of the water discharge section in which the adjacent projection device is installed onto a wall, road surface or ceiling of the tunnel.

5. 2. The fire monitoring system according to claim 1, wherein the display control means projects the image using a color according to the time that has elapsed since the occurrence of the fire or the start of projection, or the order of projection.

Images