Fire spread prevention system

Abstract

To obtain a fire spread prevention system capable of flexibly identifying fireproof curtains to be actuated so as to perform actuation control.SOLUTION: A fire spread prevention system (100) includes: a fire detection section (10) for detecting occurrence of a fire in a parking lot (500); a plurality of fireproof curtains (50) arranged in the parking lot (500); and a control section (40) for actuating the fireproof curtains (50). When the fire detection section (10) detects the occurrence of a fire in the parking lot (500), the control section (40) identifies the fireproof curtains (50) as actuation object curtains based on a fire occurrence place, so as to actuate the identified actuation object curtains.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present disclosure relates to a system for preventing the spread of a fire that breaks out in a parking lot. [Background technology]

[0002] When a fire breaks out, it is important to carry out initial firefighting activities and take fire prevention measures to prevent the flames from spreading.

[0003] In particular, in multi-story parking lots and mechanical parking lots with elevators attached to shopping malls, public facilities, apartment buildings, etc., vehicles are densely packed together, so if one vehicle catches fire, it is easy for the fire to spread to other vehicles.

[0004] The following technology has been disclosed as a technique for preventing the spread of fire in parking lots (see, for example, Patent Document 1). The fire extinguishing system in Patent Document 1 installs lowering fire curtains at the front, rear, left, and right positions of each parking space where vehicles are parked in a mechanical parking lot. When a fire is detected by a fire detector, the fire curtains are lowered to seal off the area, thereby preventing the fire from spreading. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 6-210017 Summary of the Invention [Problem to be solved by the invention]

[0006] In Patent Document 1, fire curtains are activated only in the parking space where the fire has occurred, but it is expected that the spread of fire can be prevented more effectively by identifying and activating the fire curtains that need to be activated depending on the situation within the parking lot.

[0007] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a fire spread prevention system that can more flexibly identify and activate the fire curtains that should be activated depending on the fire detection situation and parking situation within the parking lot. [Means for solving the problem]

[0008] The fire prevention system disclosed herein comprises a fire detection unit that detects the occurrence of a fire in a parking lot, a plurality of fire curtains installed in the parking lot, and a control unit that activates the fire curtains.When the fire detection unit detects that a fire has occurred in the parking lot, the control unit identifies a fire curtain to be activated from among the plurality of fire curtains based on the location of the fire, and activates the identified fire curtain to be activated. [Effects of the Invention]

[0009] According to the present disclosure, a fire spread prevention system can be obtained that can more flexibly identify and activate the fire curtains that should be activated depending on the fire detection situation and parking situation within the parking lot. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a front view showing a parking space in a parking lot according to a first embodiment of the present disclosure, and showing an example of the arrangement of fire curtains. FIG. [Figure 2] FIG. 2 is a plan view of the front view shown in FIG. 1 as viewed from above. [Figure 3] 1 is a block diagram illustrating a configuration example of a fire spread prevention system according to a first embodiment of the present disclosure. [Figure 4] 1 is a plan view showing the entire floor of a parking lot according to a first embodiment of the present disclosure. [Figure 5] 4 is a diagram showing a data table held by the control unit shown in FIG. 3. FIG. [Figure 6] 4 is a flowchart showing an example of an operation performed by the control unit shown in FIG. 3. [Figure 7]4 is a plan view showing a first example of operation control by the control unit shown in FIG. 3. FIG. [Figure 8] 4 is a plan view showing a second example of operation control by the control unit shown in FIG. 3. FIG. [Figure 9] 4 is a plan view showing a third example of operation control by the control unit shown in FIG. 3. FIG. [Figure 10] 3. FIG. 9 is a plan view showing a fourth example of operation control by the control unit shown in FIG. [Figure 11] 3. FIG. 9 is a plan view showing a fifth example of operation control by the control unit shown in FIG. [Figure 12] 3. FIG. 9 is a plan view showing a sixth example of operation control by the control unit shown in FIG. [Figure 13] 13 is a diagram illustrating the details of a method for generating a fire spread prevention section shown in FIGS. 11 and 12. FIG. [Figure 14] 4 is a plan view showing an example of operation control by the control unit shown in FIG. 3 taking into consideration north wind. [Figure 15] FIG. 4 is a plan view showing an example of operation control by the control unit shown in FIG. 3 taking into consideration an easterly wind. [Figure 16] 2 is a diagram illustrating a small window provided in the fire curtain shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, preferred embodiments of the fire spread prevention system of the present disclosure will be described with reference to the drawings. The fire prevention system disclosed herein has the technical feature of using fire curtains to prevent the spread of a fire that has broken out in a parking lot by detecting the parking space in which a vehicle is parked, and based on this detection result, identifying and activating the fire curtain that should be activated.

[0012] Embodiment 1 Fig. 1 is a front view showing a parking space in a parking lot according to a first embodiment of the present disclosure and illustrating an example of the arrangement of fire curtains, and Fig. 2 is a plan view of the front view shown in Fig. 1 as viewed from above.

[0013] The fire curtain 50 in the first embodiment is provided on the ceiling of a parking lot 500. Here, in the first embodiment, the parking lot 500 is a parking lot attached to a large commercial facility, an entertainment facility, or the like.

[0014] The fire curtain 50 is a flame-retardant scroll curtain that descends in the event of a fire in the parking lot 500 to prevent the fire from spreading to the vehicles 200. If a vehicle 200 is on fire, the fire curtain 50 confines the vehicle 200 to prevent the fire from spreading to other vehicles 200.

[0015] In the first embodiment, a fire curtain 50 is provided for each parking space 300. Although the parking space 300 is a space for parking one vehicle 200, the present invention is not limited to this, and a space that can accommodate multiple vehicles may be defined as a parking space 300. Furthermore, the fire curtain 50 may be provided on a passageway within the parking lot 500 through which vehicles pass.

[0016] The fire curtain 50 is installed to surround the parking space 300 from the front, back, left and right. In addition, the fire curtain 50 is installed so that each of the front, back, left and right sides can be operated independently to separate the parking space 300, for example, to separate only the front or only the left side.

[0017] 3 is a block diagram showing a configuration example of fire spread prevention system 100 according to the first embodiment of the present disclosure. Fire spread prevention system 100 includes fire detection unit 10, parked vehicle detection unit 20, wind direction detection unit 30, control unit 40, the above-mentioned plurality of fire curtains 50, and a plurality of wind blocking curtains 51.

[0018] The fire detection unit 10 detects a fire that has occurred in the parking lot 500 so that the location of the fire can be identified. The fire detection unit 10 may be, for example, a smoke detector or a flame detector installed at various locations in the parking lot 500. The fire detection unit 10 may also be a device that acquires video from surveillance cameras installed at various locations in the parking lot 500 and uses this video to detect the occurrence of a fire.

[0019] The parked vehicle detection unit 20 detects whether or not a vehicle 200 is parked in each parking space 300 in the parking lot 500. The parked vehicle detection unit 20 can be, for example, one that detects the presence or absence of a vehicle 200 using infrared rays or ultrasonic waves, or one that detects the presence or absence of a vehicle 200 by performing image processing on an image from a camera.

[0020] In the first embodiment, fire and parking are detected for each parking space 300 for one vehicle, but a configuration in which detection is performed for multiple parking spaces 300 at once is also acceptable. Although a parked vehicle detection unit 20 is installed in large parking lots, the present invention is also applicable to small parking lots that do not have a parked vehicle detection unit 20. In this case, the control panel 40 controls the fire curtain 50 based on information on the location of the fire obtained from the fire detection unit 10.

[0021] The wind direction detection unit 30 is a wind vane that detects the wind direction. The wind direction detection unit 30 is installed in a place where outside air is circulating, and a wind vane that can measure wind speed may be used.

[0022] Wind blocking curtain 51 is a fire curtain installed to surround the entire floor of parking lot 500. Wind blocking curtain 51 is a flame-retardant scroll curtain similar to fire blocking curtain 50 shown in Figures 1 and 2. In the event of a fire breaking out in parking lot 500, wind blocking curtain 51 will descend according to the wind direction.

[0023] It is not necessary to surround the entire floor, and if one side of the parking lot 500 is walled, it is possible not to install wind-blocking curtains 51 on that side.

[0024] The control unit 40 is a fire receiver, a computer system, or the like, and is a device that controls the entire fire spread prevention system 100 in an integrated manner.

[0025] In the first embodiment, when the fire detection unit 10 detects that a fire has broken out in the parking lot 500, the control unit 40 identifies a fire curtain 50 to be activated from among the plurality of fire curtains 50 based on the location of the fire and the detection result by the parked vehicle detection unit 20. Then, the control unit 40 activates the identified fire curtain 50.

[0026] Furthermore, the control unit 40 identifies the fire curtains 50 and wind curtains 51 to be activated from among the plurality of fire curtains 50, based on the location of the fire and the wind direction detected by the wind direction detection unit 30. Then, the control unit 40 activates the identified fire curtains 50 and wind curtains 51.

[0027] The specific contents of the control by the control unit 40 will be described later.

[0028] 3, fire extinguishing equipment such as sprinklers may be included in fire spread prevention system 100. Such fire extinguishing equipment may be installed in various locations in parking lot 500 and managed by fire spread prevention system 100.

[0029] 4 is a plan view showing the entire floor of parking lot 500 according to the first embodiment of the present disclosure. In the following, for the sake of simplicity, it is assumed that parking lot 500 is built so that each of its four sides faces the correct direction, east, west, north, and south. In addition, in FIG. 4, the top of the page faces north.

[0030] In FIG. 4, parking lot 500 is provided with parking spaces 300 in five rows in the east-west direction and four rows in the north-south direction.

[0031] Each parking space 300 is assigned a parking number for management by the control unit 40. As shown in Fig. 4, the parking number is composed of two numbers separated by a hyphen symbol "-". The number before the hyphen symbol indicates the north-south position from north to south, and the number after the hyphen symbol indicates the east-west position from west to east, and the number after the hyphen symbol indicates the east-west position from west to east, and the number after the hyphen symbol indicates the east-west position from west to east, and the number after the hyphen symbol indicates the east-west position from west to east, and the number after the hyphen symbol indicates the east-west position from west to east, and the number after the hyphen symbol indicates the east-west position from west to east, and the number after the hyphen symbol indicates the east-south ....

[0032] The parking numbers are configured so that the parking space 300 at the top left is the starting parking number (1-1).

[0033] The fire curtains 50 surrounding each parking space 300 from the front, back, left, and right are also assigned symbols for easy identification. Here, the fire curtain 50 on the north side of the parking space 300 is referred to as fire curtain 50N, and the fire curtain 50 on the east side is referred to as fire curtain 50E. Furthermore, the fire curtain 50 on the south side of the parking space 300 is referred to as fire curtain 50S, and the fire curtain 50 on the west side is referred to as fire curtain 50W. Note that in FIG. 4, only some of the fire curtains 50 are assigned symbols.

[0034] For example, the fire curtain 50S in the parking space 300 with the parking number (1-1) is shared with the parking space 300 with the parking number (2-1) adjacent to it on the south side. In this way, the fire curtain 50 is shared with the adjacent parking spaces 300.

[0035] For this reason, for example, the fire curtain 50S for parking number (1-1) and the fire curtain 50N for parking number (2-1) are the same fire curtain 50. For the same reason, the fire curtain 50E for parking number (1-1) and the fire curtain 50W for parking number (1-2) are also the same fire curtain 50. In this way, in the description of the first embodiment, two reference symbols may be assigned to the same fire curtain 50.

[0036] Like the fire curtains 50, the wind curtains 51 are also assigned symbols corresponding to the north, south, east, and west directions. In the first embodiment, the wind curtain 51 on the north side of the parking lot 500 is referred to as wind curtain 51N, and the wind curtain 51 on the east side is referred to as wind curtain 51E. Furthermore, the wind curtain 51 on the south side of the parking lot 500 is referred to as wind curtain 51S, and the wind curtain 51 on the west side is referred to as wind curtain 51W.

[0037] FIG. 5 is a diagram showing a data table held by the control unit 40 shown in FIG.

[0038] As shown in the data table 41 of FIG. 5, the control unit 40 stores the fields "parking number," "group," and "exit-side fire curtain" in association with each other.

[0039] Here, as explained with reference to FIG. 4, the "parking number" field stores two numbers separated by a hyphen.

[0040] The "Group" field stores identification information for each group when the parking spaces 300 are grouped. This "Group" field can be rewritten as desired by the administrator. How to use the "Group" field will be described later.

[0041] The "exit side fire curtain" field stores information specifying the fire curtain 50 located on the exit side of the vehicle 200.

[0042] For example, in the parking space 300 with parking number (1-3) shown in Figure 4, the vehicle 200 enters and parks from the north side, and also exits from the north side. Therefore, the code for 50N, which is located on the north side of the parking space 300, is stored in the "exit side fire curtain" field for parking number (1-3).

[0043] As another example, in parking space 300 with parking number (4-2), vehicle 200 enters and parks from the south side, and also exits from the south side. Therefore, the code for 50S, which is located on the south side of parking space 300, is stored in the "exit side fire curtain" field for parking number (4-2).

[0044] In this way, the field of "exiting fire curtain" shown in FIG. 5 represents the fire curtain 50 located on the exit side of the vehicle 200.

[0045] Next, the specific contents of the control by the control unit 40 will be explained.

[0046] FIG. 6 is a flowchart showing an example of the operation of the control unit 40 shown in FIG.

[0047] In step S101, the control unit 40 determines whether or not a fire has occurred within the parking lot 500.

[0048] When the fire detection unit 10 is a sensor such as a smoke sensor or a flame sensor, the control unit 40 receives an address assigned to the sensor that detected the smoke or flame. When the control unit 40 receives this address, it determines that a fire has occurred.

[0049] The control unit 40 may also receive a fire occurrence signal from a device that determines whether or not a fire has occurred from video footage from a surveillance camera, or may acquire video footage from a surveillance camera and determine for itself whether or not a fire has occurred.

[0050] The control unit 40 repeats the process of step S101 until it determines that a fire has occurred. On the other hand, if it determines that a fire has occurred, the control unit 40 identifies the location of the fire in step S102.

[0051] If the fire detection unit 10 is a detector such as a smoke detector or a flame detector, the control unit 40 identifies the location of the detector that detected the smoke or flame as the location of the fire. The location of the fire may also be identified based on video footage from a surveillance camera.

[0052] In step S103, the control unit 40 determines, based on the detection result detected by the parked vehicle detection unit 20, the parking space 300 with the parking number in which the vehicle 200 is parked.

[0053] In step S104, the control unit 40 identifies the fire curtain 50 to be activated. Here, the control unit 40 identifies the fire curtain 50 to be activated based on the location of the fire and the parking number of the parking space 300 where the vehicle is currently parked.

[0054] The method of identification in step S104 will be described later. The fire curtain 50 identified here is referred to as the "curtain to be activated."

[0055] Then, in step S105, the control unit 40 activates the identified curtain to be activated.

[0056] In step S106, the control unit 40 receives a wind direction detection signal from the wind direction detection unit 30 to identify the current wind direction. In step S107, the control unit 40 identifies the fire curtain 50 to be activated as a target curtain for activation based on the location of the fire and the identified wind direction. In step S108, the control unit 40 activates the target curtain for activation identified in step S107 in addition to the fire curtain 50 activated in step S105, and then ends the series of processes.

[0057] Next, a method for identifying the curtains to be activated in step S104 will be described with reference to Figures 7 to 12. In the following figures, the fire curtains 50 to be activated, i.e., the curtains to be activated, are indicated by hatching, and the fire curtains 50 that will not be activated are indicated by dashed lines.

[0058] In the following description, it is assumed that a fire breaks out in parking space 300 with parking number (3-3) when vehicle 200 is not parked therein.

[0059] FIG. 7 is a plan view showing a first example of operation control by the control unit 40 shown in FIG.

[0060] The control unit 40 first generates a section for preventing the spread of a fire detected by the fire detection unit 10. This section is called a "fire spread prevention section." Then, the control unit 40 specifies the fire curtains 50 to be activated so that the fire spread prevention section is formed by each fire curtain 50.

[0061] In the example of Figure 7, the control unit 40 generates a fire spread prevention section to surround only the parking space 300 with parking number (3-3) where the fire has broken out. Then, the control unit 40 identifies the fire curtains 50N, 50W, 50S, and 50E surrounding the parking space with parking number (3-3) as curtains to be activated so that the fire spread prevention section is formed. Then, the control unit 40 activates the curtains to be activated to separate the parking space 300 with parking number (3-3) from the surrounding area.

[0062] The control unit 40 can identify the parking space 300 where the fire is occurring based on the information from the fire detection unit 10. Therefore, the control unit 40 can generate the fire spread prevention section shown in FIG.

[0063] FIG. 8 is a plan view showing a second example of operation control by the control unit 40 shown in FIG.

[0064] As shown in the example of Fig. 7, the control unit 40 first creates a fire spread prevention section to surround only the parking space 300 with parking number (3-3) where the fire has broken out. In addition, in the example of Fig. 8, if there is no parked vehicle in the parking space 300 with parking number (3-4) adjacent to the fire spread prevention section, the control unit 40 controls the fire curtain 50E on the side of the parking space 300 not to close. This ensures space for firefighting operations.

[0065] The control unit 40 can identify the parking space 300 where a fire is occurring based on information from the fire detection unit 10. The control unit 40 can also identify the parking space 300 where a vehicle is currently parked based on the detection result of the parked vehicle detection unit 20. This allows the control unit 40 to generate the fire spread prevention zone shown in FIG.

[0066] FIG. 9 is a plan view showing a third example of operation control by the control unit 40 shown in FIG.

[0067] 7 and 8, the control unit 40 generates a fire spread prevention section so as to surround the location where the fire has occurred with the fire curtain 50. In contrast to this, as shown in FIG. 9, a fire spread prevention section may be generated so as to surround the parking space 300 in which the vehicle 200 is parked.

[0068] The control unit 40 can identify the parking space 300 where the vehicle is currently parked based on the detection result of the parked vehicle detection unit 20. Therefore, the control unit 40 can generate the fire spread prevention section shown in FIG.

[0069] FIG. 10 is a plan view showing a fourth example of operation control by the control unit 40 shown in FIG.

[0070] 9, when the fire curtain 50 surrounds the parking space 300 on all four sides, it will hinder the evacuation of the vehicle 200 parked in the parking space 300. For this reason, in the example of FIG. 10, the fire curtain 50 on the exit side is controlled not to be closed.

[0071] The control unit 40 can identify the parking space 300 where a vehicle is currently parked based on the detection result of the parked vehicle detection unit 20. Furthermore, the control unit 40 can identify the fire curtain 50 on the exit side of the parking space 300 where a vehicle is currently parked by referring to the data table 41 in Fig. 4. This allows the control unit 40 to generate the fire spread prevention section shown in Fig. 10.

[0072] In addition, if people are allowed to evacuate by car in the event of a fire, there is a concern that congestion may occur at the exit, so it may also be effective to actively lower the fire curtain 50 on the exit side to prevent vehicles 200 from moving.

[0073] Fig. 11 is a plan view showing a fifth example of operation control by the control unit 40 shown in Fig. 3. In the example of Fig. 11, fire spread prevention compartments are generated in group units.

[0074] The control unit 40 can identify the parking space 300 in which the fire has occurred based on the information from the fire detection unit 10. Furthermore, the control unit 40 can identify the parking numbers of the parking spaces 300 that belong to the same group as the parking space 300 in which the fire has occurred by referring to the data table 41 in Fig. 5 .

[0075] As in the example of Figure 11, when a fire breaks out in parking space 300 with parking number (3-3), control unit 40 refers to data table 41 in Figure 5 to identify that parking number (3-3) belongs to group E. Then, control unit 40 refers to data table 41 to identify parking numbers (3-4), (4-3), and (4-4) that belong to the same group E.

[0076] The control unit 40 generates the fire spread prevention section so as to include the parking space 300 of each identified parking number. Therefore, the control unit 40 can generate the fire spread prevention section shown in FIG.

[0077] 11, the parking spaces 300 are grouped to form a single block, but this is not limiting. For example, the parking spaces 300 may be grouped in any manner, such as grouping parking spaces 300 that are far apart from each other into the same group.

[0078] Furthermore, by allocating each parking space 300 so that it belongs to a different group, a fire spread prevention section such as that shown in FIG. 7 can be generated by the control method described in FIG.

[0079] Furthermore, in generating the fire spread prevention section shown in Fig. 11, the control unit 40 can specify only the outer frame surrounding the section as the curtain to be activated. In other words, the fire curtain 50 inside the fire spread prevention section, such as the fire curtain 50 between parking spaces (3-3) and (3-4), is not set as a target for activation. Details of this generation method will be described later with reference to Fig. 13.

[0080] FIG. 12 is a plan view showing a sixth example of operation control by the control unit 40 shown in FIG.

[0081] 11, parking spaces 300 belonging to the same group are uniformly included in a fire prevention section and separated from the surrounding area. Therefore, if a parked vehicle 200A is present in the generated fire prevention section, the vehicle 200A will be trapped inside.

[0082] To prevent this, as shown in Figure 12, if a parking space 300 in which a vehicle is parked is included within the generated fire spread prevention area, the control unit 40 excludes the parking space 300 from the fire spread prevention area.

[0083] The control unit 40 can identify the parking space 300 where a vehicle is currently parked based on the detection result of the parked vehicle detection unit 20. For this reason, the control unit 40 first generates a fire spread prevention area using the method described in Fig. 11, and then excludes the parking space 300 where a vehicle is currently parked from the generated fire spread prevention area. This allows the control unit 40 to generate the fire spread prevention area shown in Fig. 12.

[0084] FIG. 13 is a diagram illustrating the details of the method for generating the fire spread prevention compartment shown in FIGS.

[0085] 11 and 12, the control unit 40 determines how many times the same fire curtain 50 has been selected. If the same fire curtain 50 has been selected an odd number of times, the control unit 40 sets the fire curtain 50 as an activation target curtain that constitutes the fire spread prevention compartment. If the same fire curtain 50 has been selected an even number of times, the control unit 40 does not set the fire curtain 50 as an activation target curtain that constitutes the fire spread prevention compartment.

[0086] The process will be explained step by step with reference to Figure 13. First, in Figure 13(A), the control unit 40 selects the fire curtains 50N, 50W, 50S, and 50E of the parking lot number (3-3) where the fire is occurring as the curtains to be activated. At this point, the fire curtains 50N, 50W, 50S, and 50E of the parking lot number (3-3) are all selected for the first time.

[0087] Then, the control unit 40 refers to the data table 41 in Fig. 5. As a result, the control unit 40 acquires (3-4), (4-3), and (4-4) as parking numbers that belong to the same group E as the parking number (3-3).

[0088] Next, in FIG. 13(B), the control unit 40 selects the fire curtains 50N, 50W, 50S, and 50E for the parking number (3-4) to include the parking space 300 for the parking number (3-4) belonging to group E in the fire spread prevention area.

[0089] In this case, the fire curtain 50W for parking number (3-4) is the same fire curtain 50 as the fire curtain 50E for parking number (3-3), so this fire curtain 50 is selected for the second time. Therefore, the control unit 40 excludes the fire curtain 50W for parking number (3-4) from the activation targets, as it has been selected an even number of times.

[0090] On the other hand, the other fire curtains 50N, 50S, and 50E of the parking number (3-4) are all selected for the first time, which is an odd number of times, so the control unit 40 leaves them as targets for activation.

[0091] Next, in FIG. 13(C), the control unit 40 selects the fire curtains 50N, 50W, 50S, and 50E for the parking number (4-3) to include the parking space 300 for the parking number (4-3) belonging to group E in the fire spread prevention area.

[0092] In this case, the fire curtain 50N of the parking number (4-3) is the same as the fire curtain 50S of the parking number (3-3), so this fire curtain 50 is selected for the second time. Therefore, the control unit 40 excludes the fire curtain 50N of the parking number (4-3) from the activation targets, as it has been selected an even number of times.

[0093] On the other hand, the other fire curtains 50W, 50S, and 50E of the parking number (4-3) are all selected for the first time, which is an odd number of times, so the control unit 40 leaves them as targets for activation.

[0094] The same method is used for the last parking space number (4-4). That is, in Figure 13(D), fire curtains 50N, 50W, 50S, and 50E for parking space number (4-4) are selected, but fire curtains 50N and 50W for parking space number (4-4) are selected for the second time. Therefore, fire curtains 50N and 50W for parking space number (4-4) are excluded from the activation targets.

[0095] On the other hand, the other fire curtains 50S and 50E of the parking number (4-4) are both selected for the first time, which is an odd number of times, so the control unit 40 leaves them as targets for activation.

[0096] Based on the explanation so far, the fire spread prevention section shown in FIG. 11 is generated.

[0097] Next, the control unit 40 can determine that the vehicle 200A is present in the parking space 300 with the parking number (4-4) based on the detection result of the parked vehicle detection unit 20. In this case, the control unit 40 selects the fire curtains 50N, 50W, 50S, and 50E with the parking number (4-4) that are currently parked in FIG. 13(E).

[0098] As a result, the fire curtains 50S and 50E of the parking number (4-4) are excluded from the activation targets because they are selected for the second time and therefore are an even-numbered selection.

[0099] On the other hand, the fire curtains 50N and 50W of parking number (4-4) have been selected a total of three times. Therefore, the control unit 40 considers that these have been selected an odd number of times and adds the fire curtains 50N and 50W of parking number (4-4) to the list of fire curtains to be activated.

[0100] Based on the explanation so far, the fire spread prevention compartment shown in FIG. 12 is formed.

[0101] In this way, the control unit 40 can generate the fire spread prevention zones shown in Figures 11 and 12 by determining whether the same fire curtain 50 has been selected an odd number of times or an even number of times.

[0102] Note that the logic described in FIG. 13 is merely an example, and other logic may be used. Furthermore, the fire curtain 50 that forms the outer frame of each area may be stored as data, and when surrounding the same area, the data may be used to identify curtains to be activated. In this case, curtains to be activated that form fire spread prevention zones are identified so as not to surround areas where no fire has occurred and where vehicles are parked. Furthermore, all patterns of fire spread prevention zones may be defined in advance depending on the location of a fire within the area and the parking position of the vehicle 200.

[0103] Next, step S107 in FIG. 6, that is, a method for identifying the curtain to be activated based on the location of the fire and the wind direction, will be described.

[0104] In the first embodiment, windshield curtain 51 located upwind of the fire location is activated to prevent the flames from being fanned by the wind and spreading. Control unit 40 also uses fire curtain 50 located upwind of the fire location as a windshield curtain. Below, we will explain the case where a north wind is blowing and the case where an east wind is blowing when a fire breaks out, as examples.

[0105] Fig. 14 is a plan view showing an example of operation control that takes into account north winds by the control unit 40 shown in Fig. 3. In the example of Fig. 14, it is assumed that a fire has broken out in the parking space 300 with the parking number (3-3), and that the parking space 300 with the parking number (3-3) is already surrounded by the fire curtain 50.

[0106] When the wind direction detection unit 30 detects that a north wind is blowing, the control unit 40 identifies all wind blocking curtains 51N located upwind of the parking space 300 with the parking number (3-3) as curtains to be activated.

[0107] Furthermore, when the wind is blowing from the north or south, the control unit 40 identifies the parking number that is the target of activation of the fire curtain 50 by comparing the number before the hyphen symbol of the parking number.

[0108] In the example of Fig. 14, since a fire has broken out in parking lot number (3-3), the control unit 40 first acquires the number "3" before the hyphen symbol in that parking lot number. Then, since a north wind is blowing, the control unit 40 targets parking lots numbers (1-m) and (2-n) whose number before the hyphen symbol is smaller than "3" as activation targets. Here, m = 1 to 5, and n = 1 to 5.

[0109] Then, the control unit 40 selects all of the fire curtains 50N, which are assigned the north symbol, from among the fire curtains 50 with parking numbers (1-m) and (2-n).

[0110] The control unit 40 can identify the selected fire curtain 50N as the curtain to be activated. Note that for a parking space 300 where a vehicle 200 is currently parked, the fire curtain 50 on the exit side may not be activated so that the vehicle 200 can easily evacuate. The example in Figure 14 illustrates this state.

[0111] FIG. 15 is a plan view showing an example of operation control by the control unit 40 shown in FIG. 3 taking into consideration the easterly wind.

[0112] When wind direction detection unit 30 detects that an east wind is blowing, control unit 40 activates all wind blocking curtains 51E located upwind of parking space 300 with parking number (3-3).

[0113] Furthermore, when the wind is blowing from the east or west, the control unit 40 identifies the parking number that is the target of activation of the fire curtain 50 by comparing the numbers after the hyphen sign of the parking number.

[0114] In the example of Fig. 15, since a fire has broken out in parking lot number (3-3), the control unit 40 first acquires the number "3" after the hyphen sign of that parking lot number. Then, since an east wind is blowing, the control unit 40 targets parking lots numbers (m-4) and (n-5) whose numbers after the hyphen sign are greater than "3". Here, m = 1 to 5, and n = 1 to 5.

[0115] Then, the control unit 40 selects all of the fire curtains 50E assigned with the east symbol from among the fire curtains 50 with parking numbers (m-4) and (m-5).

[0116] The control unit 40 can specify the selected fire curtain 50E as the curtain to be activated. The example of Fig. 15 illustrates this state.

[0117] Here, we have used examples where the wind is blowing from the north and east, but the same method can be used for other winds such as south and west. When the wind is blowing from the south, parking numbers (4-m) and (5-n) with a number before the hyphen greater than "3" should be activated. When the wind is blowing from the west, parking numbers (1-m) and (2-n) with a number after the hyphen less than "3" should be activated.

[0118] FIG. 16 is a diagram illustrating a small window provided in the fire curtain 50 shown in FIG.

[0119] 16, a small window 52 is provided in the center of the fire curtain 50. Such a small window 52 functions as an entrance for the fire-fighting drone.

[0120] The position of the small window 52 does not have to be in the center of the fire curtain 50. For example, the small window 52 may be provided in the lower part of the fire curtain 50, and a small, remotely controlled mobile vehicle may enter through this small window 52 to carry out firefighting activities.

[0121] 16. Also, a small window similar to the small window 52 shown in FIG.

[0122] In addition, the fire curtain 50 and the wind-blocking curtain 51 may be partially or entirely transparent so that the inside of the fire-prevention compartment can be seen from the outside.

[0123] In addition, in large facilities where certain floors of a building are used as multi-story parking garages, the ventilation equipment exhaust vents may be located inside the parking garage. If a fire breaks out in such a parking garage, the exhaust from the vents can easily spread the fire.

[0124] To cope with such a situation, a wind-blocking curtain 51 may be provided at the exhaust port, and in the event of a fire, the control unit 40 may activate the wind-blocking curtain 51 to block the exhaust port. This will cut off the influence of the exhaust air from the exhaust port and prevent the fire from spreading.

[0125] In addition, the portions of the parking lot 500 that are open to the outside are identified, and the necessary number of wind-blocking curtains 51 are installed in those portions. Then, in the event of a fire, the control unit 40 may activate the wind-blocking curtains 51 to block the inflow of fresh outside air.

[0126] It is also possible to generate fire prevention zones that surround the location of the fire in multiple layers, such as double or triple layers, around the location of the fire. In the first embodiment, the parking numbers are configured to identify the location of each parking space 300. Therefore, by identifying the parking space 300 where the fire occurred, it is also possible to identify the parking space numbers one or two spaces away from there. By applying this, it is also possible to generate fire prevention zones that surround the location of the fire in multiple layers.

[0127] Alternatively, in order to create a multiple-enclosure fire prevention compartment, the fire curtains 50 to be activated for each location of a fire may be specified in advance and stored as data in the control unit 40.

[0128] The features of such a fire spread prevention system 100 can be summarized as follows: the system has the following configuration and can achieve the following effects.

[0129] The fire spread prevention system 100 includes a fire detection unit 10 that detects the occurrence of a fire in a parking lot 500, and a plurality of fire curtains 50 installed in the parking lot 500. The fire spread prevention system 100 also includes a parked vehicle detection unit 20 that detects for each parking space 300 in the parking lot 500 whether a vehicle 200 is parked in that parking space 300, and a control unit 40 that activates the fire curtains 50.

[0130] When the fire detection unit 10 detects that a fire has broken out in the parking lot 500, the control unit 40 identifies a fire curtain 50 to be activated from among the multiple fire curtains 50 as a curtain to be activated, based on the location of the fire and the detection result by the parked vehicle detection unit 20. The control unit 40 then activates the identified curtain to be activated.

[0131] Therefore, the fire spread prevention system 100 can more flexibly identify and control the operation of the fire curtains 50 that should be activated depending on the fire detection situation and parking situation in the parking lot. Furthermore, since the fire spread prevention system 100 takes into account the detection results by the parked vehicle detection unit 20, it can take measures to prevent the fire spread so as not to damage parked vehicles 200.

[0132] Furthermore, when a fire extinguishing agent is sprayed during firefighting activities, the agent scatters around. To address this issue, the fire curtain 50 can be used to block off the area where the fire has started from the surrounding area, thereby preventing the agent from scattering around.

[0133] Furthermore, the spraying of the fire extinguishing agent will fan the flames, causing them to scatter to the surrounding vehicles 200, but this can be prevented by blocking them from the surroundings with the fire curtain 50.

[0134] The fire curtains 50 are provided to surround each parking space 300 from the front, back, left and right, and can be operated independently to separate the parking spaces 300. The control unit 40 also generates a fire prevention section to prevent the spread of a fire detected by the fire detection unit 10, and activates the fire curtains 50 so that the fire prevention section is formed by each of the fire curtains 50.

[0135] This allows the fire spread prevention system 100 to identify the fire curtains 50 that should be activated in units of front, back, left and right of the parking space 300, and allows the fire curtains 50 to form fire spread prevention zones.

[0136] Furthermore, by forming a large fire prevention compartment, even in situations where the location of the fire cannot be identified in local units such as 300 parking spaces, the flames can be more reliably contained within the fire curtain 50. In addition, smoke can be contained within the fire prevention compartment, preventing the smoke from spreading.

[0137] Furthermore, the control unit 40 determines whether or not a vehicle 200 is parked in a parking space 300 adjacent to the fire spread prevention section based on the detection result of the parked vehicle detection unit 20. If the control unit 40 determines that a vehicle 200 is not parked, the control unit 40 controls the fire curtain 50 so that the side of the parking space 300 is not partitioned off.

[0138] This allows a route to the location of the fire to be secured, which in turn ensures a working space for firefighting operations and makes it easier to carry out firefighting operations.

[0139] Furthermore, the control unit 40 specifies a curtain to be activated from among the plurality of fire curtains 50 so as to surround the location of the fire in multiple layers.

[0140] By surrounding the fire area in multiple layers in this way, the supply of oxygen can be cut off, preventing the fire from spreading and also suppressing the escape of smoke.

[0141] The fire spread prevention system 100 further includes a wind direction detection unit 30 that detects the wind direction. The control unit 40 then identifies a target fire curtain to be activated from among the plurality of fire curtains 50 based on the location of the fire and the wind direction detected by the wind direction detection unit 30.

[0142] This allows measures to be taken to prevent the spread of fire, taking into account the wind direction.

[0143] Furthermore, the control unit 40 identifies the fire curtain 50 located on the upwind side of the location of the fire as the curtain to be activated.

[0144] This will help prevent the spread of fire from upwind to downwind.

[0145] The fire curtain 50 is also provided with a small window 52 that can be opened and closed, thereby ensuring an entrance for autonomous flying objects and traveling objects.

[0146] In addition, at least a part of the fire curtain 50 is transparent. This allows the viewer to see the situation on the other side of the fire curtain 50 even when separated by the fire curtain 50. [Explanation of symbols]

[0147] 10 Fire detection unit, 20 Parked vehicle detection unit, 30 Wind direction detection unit, 40 Control unit, 41 Data table, 50, 50E, 50N, 50S, 50W Fire curtains, 51, 51E, 51N, 51S, 51W Wind blocking curtains, 52 Small window, 100 Fire spread prevention system, 200 Vehicle, 300 Parking space, 500 Parking lot.

Claims

1. a fire detection unit that detects the occurrence of a fire in the parking lot; a plurality of fire curtains provided in the parking lot; a control unit that activates the fire curtain; Equipped with The control unit When the fire detection unit detects that a fire has occurred in the parking lot, Identifying a fire curtain to be activated from among the plurality of fire curtains as an activation target curtain based on the location of the fire; activating the identified curtain to be activated; Fire prevention system.

2. The fire curtains are installed so as to surround each parking space in the parking lot from the front, back, left and right, and are installed so that each of the front, back, left and right can be operated individually to separate the parking space, the control unit generates a fire spread prevention section for preventing the spread of a fire detected by the fire detection unit, and activates the fire curtains so that the fire spread prevention section is formed by each of the fire curtains; The fire spread prevention system according to claim 1 .

3. a parked vehicle detection unit that detects whether a vehicle is parked in each parking space of the parking lot; The control unit determines whether a vehicle is parked in a parking space adjacent to the fire spread prevention section based on the detection result of the parked vehicle detection unit, and if it determines that a vehicle is not parked, controls the fire curtain not to separate the side of the parking space. The fire spread prevention system according to claim 2 .

4. The control unit specifies the activation target curtain from among the plurality of fire curtains so as to surround the location of the fire in multiple layers. The fire spread prevention system according to claim 1 or 2.

5. Further provided is a wind direction detection unit that detects the wind direction, The control unit further identifies the activation target curtain from among the plurality of fire curtains based on the location of the fire and the wind direction detected by the wind direction detection unit. The fire spread prevention system according to claim 1 or 2.

6. The fire curtain is provided with a small window that can be opened and closed. The fire spread prevention system according to claim 1 or 2.

7. At least a portion of the fire curtain is transparent; The fire spread prevention system according to claim 1 or 2.

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