JP2024012024A - water cannon system - Google Patents

Abstract

[Problem] To provide a water cannon system that can prevent people in a building from being directly hit by water even in automatic water discharge mode. [Solution] The water cannon system includes a fire detection means that searches a monitoring area set in a fire prevention object and acquires an image of the monitoring area, a fire source location identification means that identifies the fire source location from the image acquired by the fire detection means, an automatic water discharge determination means that determines whether the identified fire source location is included in a predetermined automatic water discharge target area, and a water discharge control command means that starts discharging water from the water cannon toward the fire source location when the fire source location is included in the automatic water discharge target area. [Selected Figure] Figure 2

Description

The present invention relates to water cannon systems.

Patent Document 1 describes a system that combines a scanning fire detection device and a water nozzle device as a fire detection and extinguishing system for monitoring and extinguishing fires in facilities with large spaces such as arenas and halls. . In such a fire detection and extinguishing system, a scanning type fire detection device is installed in a position where the restricted area can be seen from above, and the controlled area is scanned two-dimensionally by optical horizontal scanning and vertical scanning, and an infrared sensor is installed. When the light reception signal of the incident light exceeds the threshold level, it is determined that there is a fire source. The control device determines the coordinate position of the fire source based on the horizontal and vertical scanning angles of the fire detection device when the fire source is detected, and controls the water spray direction and water spray distance of the water spray nozzle device. For example, a water spray nozzle device is equipped with a water spray nozzle with a fixed angle of elevation that can be rotated horizontally.The water spray direction is set at the fire source by controlling the rotation of the water spray nozzle, and the water spray distance is determined by the water spray pressure supplied to the water spray nozzle. Set.

This fire detection and extinguishing system has automatic water spray mode and manual water spray mode. The automatic water spraying mode is a mode in which water spraying is automatically started when predetermined automatic water spraying conditions are satisfied, without the observer operating the manual water spraying operation switch after the water cannon gun is ready to spray water. On the other hand, the manual water spraying mode is a mode in which the lifeguard operates the manual water spraying operation switch to manually start water spraying after the water cannon is ready to spray water.

Japanese Patent Application Publication No. 10-258136

It is assumed that this fire detection and extinguishing system is installed in a facility that can accommodate spectators. In that case, if a fire breaks out in the audience seats during the automatic water spray mode, water will be sprayed automatically and there is a possibility that the water will directly hit the audience. On that point, in manual water spray mode, for example, you can start spraying water at a certain distance from the audience seats, make the audience aware of the water spray, and then direct the water spray in the direction of the fire source, allowing the water spray to hit the audience directly. This can be prevented.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a water cannon system that can prevent water from directly hitting people in a building even in automatic water spray mode.

In order to solve the above problems, a water cannon system according to the present invention includes a fire exploration means for exploring a monitoring area set in a fire prevention target and acquiring an image of the monitoring area; fire source location identifying means for identifying a fire source location from an image; automatic water spraying determining means for determining whether the identified fire source location is included in a predetermined automatic water spraying target area; Water discharge control command means for starting water discharge from a water cannon toward the fire source position when the position is included in the automatic water discharge target area.

According to the present invention, it is possible to provide a water cannon system that can prevent water from directly hitting people in the building even in the automatic water cannon mode.

FIG. 1 shows an example of the warning range of this water cannon system. FIG. 2 shows an example of a system of water cannon systems. FIG. 3 shows an example of the arrangement and protection range of the water cannon 201. FIG. 4 shows an example of the appearance of the fire detection device 203. FIG. 5 shows an example of the arrangement and warning range of the fire detection device 203. FIG. 6 shows an example of the arrangement and warning range of the fire detection device 203. FIG. 7 shows an example of the functional configuration of the water cannon/fire exploration control panel 205. FIG. 8 shows an example of the functional configuration of the water cannon central operation panel 207. FIG. 9 shows an example of an automatic mode operation sequence 900. FIG. 10 shows an example of an operation sequence 1000 in manual mode. FIG. 11 shows an example of an operation flow 1100 for normal exploration. FIG. 12 shows an example of an operational flow 1200 for fixed point exploration. FIG. 13 shows an example of an operation flow 1300 for A exploration. FIG. 14 shows an example of an operation flow 1400 for B exploration.

1. Embodiment 1-1. Configuration This embodiment is a sprinkler system (hereinafter referred to as a "water cannon system") that uses a water cannon head or the like. This water cannon system is a sprinkler system that combines a fire detection system to effectively detect fires that occur in large spaces or fire prevention objects with high ceilings, and a fire extinguishing system to effectively extinguish the fires. It is.

This water cannon system consists of a water cannon, a remote control valve, a fire pump, a fire detection device, a fire detection control panel, a water cannon/fire detection control panel, a water cannon central control panel, a water cannon field control panel, and a water cannon information processing panel. It is made up of etc.

When the fire detection device detects a fire, it moves on to the detailed task of locating the fire source, and once the fire source is determined, it selects and aims the water cannon to spray water. In the automatic mode, a timer is activated, and when the countdown ends, the corresponding remote control valve is automatically opened and the fire pump is activated to start spraying water from the water cannon.

If it is necessary to make fine adjustments to the position of the water cannon, the direction of the water cannon can be adjusted by checking and operating the image taken by the fire detection device's visible camera on the central control panel of the water cannon. It is also possible to directly confirm the fire source on-site and make adjustments by operating the water cannon field control panel.

The fire protection object of this water cannon system is a structure with a retractable roof that encloses a large space when closed. It is mainly used for baseball and can accommodate a large number of people.

FIG. 1 shows an example of the warning range of this water cannon system. This water cannon system monitors the field portion 101 (area surrounded by a thick solid line) and the spectator seats 102 (area surrounded by a broken line) shown in the figure.

Next, FIG. 2 shows an example of a water cannon system system.
A water cannon 201 and a remote control valve 202 for controlling water discharge from the water cannon 201 are arranged in the protection range. The remote control valve 202 is installed in a water supply pipe that connects the water cannon 201 and the fire pump 211.

Further, in the protection range, a fire detection device 203, a water cannon/fire detection control panel 205, and a fire detection control panel 206 for controlling the fire detection device 203 are arranged. The fire detection device 203 is connected via a fire detection device relay panel 204 to a water cannon/fire detection control panel 205 or a fire detection control panel 206 by a signal line. The water cannon/fire detection control panel 205 is connected to the remote control valve 202 by a signal line.

Further, a water cannon field operation panel 208 for operating the water cannon 201 is arranged in the protection range. This water cannon field operation panel 208 is connected to each of the water cannon 201 and the water cannon/fire detection control panel 205 by signal lines.

A fire pump 211 and a pump control panel 212 for controlling the fire pump 211 are arranged in the pump room.

A water cannon information processing panel 209, a water cannon central operation panel 207, and a receiver 210 are arranged in the disaster prevention center. The water cannon information processing panel 209 is connected to the water cannon central operation panel 207 and the receiver 210 through signal lines. The water cannon information processing board 209 is also connected to each of the fire detection equipment relay board 204, the water cannon/fire detection control board 205, the fire detection control board 206, and the pump control board 212 through signal lines.
The main components will be explained below.

The water cannon 201 is a small movable head for spraying water over a wide area. This water cannon 201 automatically turns in the direction of the fire source based on information from the fire detection device 203, etc., and the water cannon angle and shape change in three stages (far, intermediate, and near) depending on the distance to the fire source. This allows water to be effectively sprayed against fires.

FIG. 3 shows an example of the arrangement and protection range of the water cannon 201.
The water cannons 201 are arranged at three locations: the first base side passenger seats, the third base side passenger seats, and the vicinity of the center back screen. Water from each water cannon has three patterns depending on the distance to the fire source: far 301, middle 302, and near 303.

Next, the remote control valve 202 is a valve for controlling the water cannon 201 to discharge water and stop the water discharge. When a fire occurs and a water cannon 201 is selected to spray water, the corresponding remote control valve 202 is opened by automatic control or manual operation, and the water cannon 201 starts spraying water.

The fire exploration device 203 is a fire exploration means that explores a monitoring area set as a fire prevention target and acquires an image thereof. The acquired images are transmitted to the water cannon/fire detection control panel 205 , the fire detection control panel 206 , and the water cannon information processing panel 209 via the fire detection device relay panel 204 .

FIG. 4 shows an example of the external appearance of the fire detection device 203. 4(a) shows the left side, FIG. 4(b) shows the front, and FIG. 4(c) shows the right side.
The fire detection device 203 includes an electric pan head 401 for horizontal rotation, an electric pan head 402 for vertical rotation mounted on the electric pan head 401, an infrared camera 403 attached to the rotation axis of the electric pan head 402, and It consists of a visible camera 404.

The infrared camera 403 and the visible camera 404 can be turned and raised and raised by electric pan heads 401 and 402, and can sequentially stop at 12 different monitoring positions to acquire images.

5 and 6 show an example of the arrangement and warning range of the fire detection device 203. FIG. 5 particularly shows the warning range in the first exploration mode, and FIG. 6 particularly shows the warning range in the second exploration mode.
Basically, one fire detection device 203 is installed for each water cannon 201, and specifically, it is installed in three locations: the first base side audience seats, the third base side audience seats, and the center side back screen area. It is located. However, since this alone cannot monitor the entire warning range, one additional fire detection device 203 is installed near the ceiling roof above the center back screen (hereinafter referred to as the "large window").

At this time, the fire detection device 203 on the center side is in a dormant state during normal times because the warning range is included by the fire detection devices 203 on the large window, third base side, and first base side. In addition, since it is possible to monitor most of the alert area by combining the two fire detection devices 203 on the large window and the fire detection device 203 on the 1st or 3rd base side, the remaining one is used for the area left over from fixed point detection. monitoring. In order to perform this control, two types of exploration modes (see Table 1) are defined and operated by switching them at fixed intervals using a timer.

Here, the normal exploration is an exploration method in which the fire exploration device 203 stops at fixed angle intervals, captures thermal images, and explores the entire monitoring range. The fire detection device 203 notifies the approximate location of the fire source at the timing when the fire source is found, even if the fire detection device 203 has not completed one cycle.
On the other hand, fixed point exploration is an exploration method in which the fire exploration device 203 captures a thermal image at a fixed angle. The fire search device 203 notifies the user of the approximate location of the fire source at the time it finds the fire source.

FIG. 5 described above shows the monitoring range in the first exploration mode. In the figure, a solid line 501 indicates the warning range of the fire detection device 203 on the first base side, a dashed line 502 indicates the warning range of the fire detection device 203 on the third base side, and a two-dot chain line 503 indicates the fire detection range of the fire detection device 203 on the third base side. The warning range of the exploration device 203 is shown.
On the other hand, FIG. 6 described above shows the monitoring range in the second exploration mode. In the figure, a solid line 601 indicates the warning range of the fire detection device 203 on the first base side, a dashed-dotted line 602 indicates the warning range of the fire detection device 203 on the third base side, and a two-dot chain line 603 indicates the fire detection range of the large window. The warning range of the exploration device 203 is shown.

Next, the water cannon/fire exploration control panel 205 will be explained.
The water cannon/fire detection control panel 205 controls the fire detection device 203, identifies the presence and location of a fire source from images received from the fire detection device 203, and sends information to the water cannon information processing panel 209. In addition, the water cannon/fire detection control panel 205 receives control commands from the water cannon information processing panel 209 and controls the water discharge pattern and rotation of the water cannon 201, as well as the elevation and rotation of the visible camera 404 of the fire detection device 203. do.

FIG. 7 shows an example of the functional configuration of this water cannon/fire exploration control panel 205.
The water cannon/fire exploration control panel 205 includes a normal exploration section 701, a fixed point exploration section 702, an A exploration section 703, a B exploration section 704, and a water cannon control section 705. These functions are provided by the processor executing a control program stored in memory.

First, the normal search unit 701 executes normal search. Specifically, the normal search unit 701 stops the infrared camera 403 at fixed angle intervals, captures images, and searches the entire monitoring range. At this time, the normal detection unit 701 analyzes the image acquired by the infrared camera 403 at each monitoring position, and compares the temperature at the highest temperature position with the fire determination temperature setting value. The fire determination temperature setting value referred to in this comparison process is a threshold value set in advance by the user.

The normality detection unit 701 also determines whether the above-mentioned highest temperature position is included in the mask area. The mask area referred to in this determination is an area set in advance by the user to be excluded from fire determination targets, and is set individually for each of the 12 monitoring positions. Therefore, the user can individually set areas to be excluded from fire determination targets for each of the 12 monitoring positions.

As a result of the above comparison and determination, the normality detection unit 701 determines if the temperature at the highest temperature position exceeds the fire judgment temperature setting value and the highest temperature position is not included in the mask area corresponding to the monitoring position. It is determined that there is a fire.
Detailed processing of normal exploration will be described later.

Next, fixed point exploration section 702 will be explained.
Fixed point exploration section 702 executes fixed point exploration. Specifically, in the fixed point exploration unit 702, the infrared camera 403 captures a thermal image at a fixed angle and performs exploration. At this time, the fixed point exploration unit 702 analyzes the image acquired by the infrared camera 403 at a pre-designated monitoring position, and compares the temperature at the highest temperature position with the fire determination temperature setting value. The fire determination temperature setting value referred to in this comparison process is a threshold value set in advance by the user.

The fixed point search unit 702 also determines whether the above-mentioned highest temperature position is included in the mask area. The mask area referred to in this determination is an area set in advance by the user to be excluded from fire determination targets, and is set individually for each of the 12 monitoring positions. Therefore, the user can individually set areas to be excluded from fire determination targets for each of the 12 monitoring positions.

The fixed point exploration unit 702 determines, as a result of the above comparison and determination, that the temperature at the highest temperature position exceeds the fire judgment temperature setting value, and the highest temperature position is not included in the mask area corresponding to the monitoring position. It is determined that there is a fire.
Detailed processing of fixed point exploration will be described later.

Next, the A search section 703 will be explained.
The A search unit 703 executes A search. Exploration A is an exploration performed simultaneously by three fire exploration devices 203 excluding the fire exploration device 203 that detected the fire when a fire is detected during normal exploration or fixed point exploration. Exploration A is different from normal exploration in that exploration is performed at least once for every monitoring position regardless of fire detection, whereas in normal exploration, exploration is not performed beyond the monitoring position where a fire was detected. differ.

Next, the B search section 704 will be explained.
The B search unit 704 executes the B search. This B search is a search in which the fire detection device 203 that issued the A alarm moves the fire spot to the center of the screen photographed by the infrared camera 403 to obtain more detailed positional information.

Specifically, when the normal exploration section 701, the fixed point exploration section 702, or the A exploration section 703 determines that there is a fire, the B exploration section 704 uses electric power so that the highest temperature position is approximately at the center of the screen of the infrared camera 403. Controls pan heads 401 and 402. At this time, the B exploration unit 704 determines whether the elevation angle of the electric pan head 402 to be controlled satisfies a predetermined condition. The predetermined condition taken into consideration in this determination is that the elevation angle of the electric pan head 402 is 0° (horizontal) or less. If this condition is not met, there is a high possibility that the fire source is sunlight, so the B search unit 704 cancels the fire determination made by the normal search unit 701 and the like. Therefore, false detection of fire is prevented.

After controlling the electric pan heads 401 and 402, the B exploration unit 704 acquires a plurality of images including the highest temperature position from the infrared camera 403. Then, the B search unit 704 analyzes the acquired images and identifies the maximum temperature in each image. After specifying the maximum temperature, if the specified maximum temperature is equal to or higher than the forced alarm determination temperature, the B search unit 704 corrects the maximum temperature to the forced alarm replacement temperature. The forced alarm determination temperature referred to in this correction process is a threshold value preset by the user, and is set to 400° C. in this embodiment. On the other hand, the forced alarm replacement temperature is a correction value that is preset by the user, and is set to 1000° C. in this embodiment. This forced alarm replacement temperature is set to a temperature higher than the forced alarm determination temperature.

When the forced alarm determination temperature is set to 400°C, the temperature of the flame (measured as approximately 300°C in this system) is less than 400°C, so it is not corrected to the forced alarm replacement temperature. On the other hand, since the temperature of sunlight (measured at about 600°C in this system) is 400°C or higher, it is corrected to a fixed value of forced alarm replacement temperature (1000°C). As a result of this correction, false detection of fire can be more reliably prevented in the process of comparing temperatures between images, which will be described later.

After the temperature correction described above, the B exploration unit 704 compares the correction values between the plurality of images described above. As a result of this comparison, if the temperature difference is less than or equal to the predetermined threshold, the B exploration section 704 cancels the fire determination made by the normal exploration section 701 and the like. This is because the fact that there is no or small temperature difference between images means that the fire source represented by those images is likely to be sunlight or its metallic reflection, rather than a flame whose temperature fluctuates. In this way, by canceling the fire determination when the temperature difference is less than or equal to a predetermined threshold value, false detection of fire can be prevented.

On the other hand, if the temperature difference exceeds the predetermined threshold as a result of the above comparison, the B search unit 704 identifies the fire source position from the image including the above maximum temperature position acquired from the infrared camera 403.

To summarize the above, the B exploration section 704 can detect multiple occurrences when a fire is determined by the normal exploration section 701 or the like, and the predetermined condition that the elevation angle of the electric pan head 402 is 0° (horizontal) or less is met. When the temperature difference between the images exceeds a predetermined threshold, the fire source position is identified from the image including the above-mentioned highest temperature position acquired from the infrared camera 403.
Note that more detailed processing of the B search will be described later.

Next, the water cannon control section 705 will be explained.
The water cannon control unit 705 receives a water cannon control command transmitted from the water cannon central operation panel 207 and controls the water cannon 201 to face the fire source.

Next, the fire exploration control panel 206 will be explained.
The fire detection control panel 206 is obtained by removing the water cannon control section 705 from the water cannon/fire detection control panel 205, and is installed in relation to the large window fire detection device 203 described above.

The water cannon central operation panel 207 is for overall management of the water cannon system. This water cannon central operation panel 207 displays images captured by the visible camera 404 of the fire detection device 203 on a TV monitor when a fire occurs, and also displays various information and operating status sent from the water cannon information processing panel 209. Displayed on the LCD monitor and operation unit. The operation unit can control and switch the visible camera 404 and the water cannon 201, perform water spraying operations, and the like.

FIG. 8 shows an example of the functional configuration of this water cannon central operation panel 207.
The water cannon central operation panel 207 includes a water cannon control command section 801, an automatic water discharge determination section 802, a water cannon control command section 803, and a notification section 804. These functions are provided by the processor executing a control program stored in memory.

First, when the water cannon central operation panel 207 receives the B alarm transmitted from the water cannon information processing panel 209, the water cannon control command unit 801 transmits a water cannon control command to the water cannon/fire detection control panel 205. do. The transmitted water cannon control command instructs the water cannon 201 to be controlled so as to face the fire source.

The automatic water spray determination unit 802 determines whether the fire source position specified by the water cannon/fire detection control panel 205 or the fire detection control panel 206 is included in the automatic water spray target area. The automatic water spraying target area referred to in this determination process is an area set in advance by the user, and is an area to be automatically sprayed with water. In this embodiment, the audience seats are not included in this automatic water spray target area.

When the fire source position specified by the water cannon/fire detection control panel 205 or the like is included in the automatic water spray target area, the water cannon control command unit 803 automatically starts water spray from the water cannon 201 to the fire source position. let

If the fire source location identified by the water cannon/fire detection control panel 205 or the like is not included in the automatic water spray target area, the notification unit 804 prompts the user to manually spray water (in other words) instead of the automatic water spray described above. and notify users that water will not be sprayed automatically).
Here, as described above, in this embodiment, the automatic water spray target area does not include the audience seats. Therefore, when the fire source is located in the audience seats, automatic water spraying is not performed, and manual water spraying is performed instead. If you use manual water spraying, you can prevent the water from directly hitting the audience by starting the water spraying at a certain distance from the audience seats, making the audience aware of the water spraying, and then directing the water toward the fire source. can.

Next, the water cannon field operation panel 208 will be explained.
The water cannon field operation panel 208 is installed close to the water cannon 201 in order to directly operate the water cannon 201 while checking the fire situation on site. Even in the unlikely event that a system failure occurs in the control system from the water cannon central operation panel 207 and the water cannon information processing panel 209, manual operation from the water cannon local operation panel 208 is possible.

The water cannon information processing panel 209 collects fire source location information from the water cannon/fire detection control panel 205 and the fire detection control panel 206, determines the fire source location, receives video signals from the visible camera 404, and controls the camera. conduct. In addition, the water cannon information processing panel 209 issues control commands, alarms, and displays to various devices in cooperation with the water cannon central operation panel 207 and the water cannon local operation panel 208.

Receiver 210 is a fire receiver installed as automatic fire alarm equipment. This receiver 210 displays and warns water discharge, automatic/manual status, system abnormality, and the like.

1-2. Operation The water cannon system has an operation management system that monitors and operates the water cannon central operation panel 207 installed in the disaster prevention center, and when a fire occurs, initial fire extinguishing activities are carried out quickly according to a predetermined operation flow. The predetermined operation flow includes fire detection by fire exploration, and fire detection by fire exploration has an automatic mode and a manual mode. The automatic mode and manual mode will be explained below.

1-2-1. Automatic Mode FIG. 9 shows an example of an operating sequence 900 for automatic mode.
First, the water cannon/fire exploration control panel 205A always executes normal exploration or fixed point exploration (step 901). When a fire is detected as a result of normal exploration or fixed point exploration, the water cannon/fire exploration control panel 205A notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of the fire and the approximate location of the fire source (step 902 ). When the water cannon information processing panel 209 receives this search result, it notifies the water cannon central operation panel 207 of an A warning (step 903). When the water cannon central operation panel 207 receives this A alarm, it displays the A alarm on the LCD monitor.

The water cannon/fire exploration control panel 205A executes exploration B after transmitting the aforementioned exploration results (step 904). When a fire is detected as a result of exploration B, the water cannon/fire exploration control panel 205A notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of the fire and the detailed location of the fire source (step 905). When the water cannon information processing panel 209 receives this search result, it notifies the water cannon central operation panel 207 of a B warning (step 906). When the water cannon central operation panel 207 receives this B alarm, it displays a fire message on the LCD monitor and TV monitor. The water cannon central operation panel 207 also transfers information to the receiver 210 via the water cannon information processing panel 209.

In addition, the water cannon central operation panel 207 selects the water cannon 201 and water spray pattern (step 907). The water cannon central operation panel 207 then transmits a water cannon control command to the water cannon/fire detection control panel 205A via the water cannon information processing panel 209 (step 908). When the water cannon/fire exploration control panel 205A receives this water cannon control command, it controls the water cannon 201A based on this command (step 909). As a result of this control, the water cannon 201A is directed toward the fire source.

After transmitting the water cannon control command, the water cannon central operation panel 207 determines whether the detailed position of the fire source is included in the automatic water cannon area (step 910). As a result of this determination, if the detailed fire source position is included in the automatic water spray area, the water cannon central operation panel 207 waits until it receives the B alarm from the second water cannon/fire exploration control panel 205. On the other hand, as a result of this determination, if the detailed location of the fire source is not included in the automatic water spray area, the water cannon central control panel 207 displays a message on the LCD monitor saying "This is not an automatic water spray area. Check the scene. Please carry out appropriate initial fire extinguishing.'' is displayed. Then, the water cannon central operation panel 207 does not execute steps after step 918, which will be described later.

Here, as described above, in this embodiment, the automatic water spray target area does not include the audience seats. Therefore, when the fire source is located in the audience seats, automatic water spraying is not performed, but manual water spraying is performed instead. If you use manual water spraying, you can prevent the water from directly hitting the audience by starting the water spraying at a certain distance from the audience seats, making the audience aware of the water spraying, and then directing the water toward the source of the fire. can.
Note that instead of manual water spraying, firefighting activities may be performed using other firefighting equipment (for example, indoor fire hydrants).

Note that the above-mentioned prompting for manual water spraying using the water cannon central operation panel 207 is not limited to displaying a message, and may be performed by audio output.

After notifying the above-mentioned B alarm, the water cannon information processing panel 209 transmits an A exploration start command to all other water cannon/fire exploration control panels 205 and fire exploration control panels 206 (step 911). In the following explanation, a case will be described in which the water cannon/fire exploration control panel 205B receives this A exploration start command.

When the water cannon/fire exploration control panel 205B receives the A exploration start command, it executes the A exploration (step 912). When a fire is detected as a result of exploration A, the water cannon/fire exploration control panel 205B notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of the fire and the approximate location of the fire source (step 913). When the water cannon information processing panel 209 receives this search result, it notifies the water cannon central operation panel 207 of the A warning (step 914).

The water cannon/fire exploration control panel 205B executes exploration B after transmitting the above exploration results (step 915). When a fire is detected as a result of exploration B, the water cannon/fire exploration control panel 205B notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of the fire and the detailed location of the fire source (step 916). When the water cannon information processing panel 209 receives this search result, it notifies the water cannon central operation panel 207 of a B warning (step 917).

When the water cannon central operation panel 207 receives this B alarm, it starts a countdown using a 15 second timer (step 918). When the count value becomes zero, the water cannon central operation panel 207 transmits a pump activation command to the water cannon information processing panel 209 (step 919). When the water cannon information processing panel 209 receives this pump activation command, it activates the fire pump 211 (step 920).

The water cannon central operation panel 207 also transmits a remote control valve opening command to the water cannon information processing panel 209 (step 921). When the water cannon information processing panel 209 receives this remote control valve opening command, it opens the remote control valve 202A for the water cannon 201A (step 922). As a result, water is sprayed from the water cannon 201A toward the fire source.

When the fire is extinguished as a result of water spraying and a recovery operation is performed on the water cannon central operation panel 207, the fire pump 211 is stopped.
The above is an explanation of the automatic mode.

1-2-2. Manual Mode FIG. 10 shows an example of an operating sequence 1000 in manual mode.
The operation sequence of the manual mode is common to the operation sequence of the automatic mode from step 901 to step 917. Description of these steps will be omitted.

After receiving the second B alarm, the water cannon central operation panel 207 remains on standby without starting the countdown. On the water cannon central operation panel 207 in this state, when the center personnel who has confirmed a fire operates the water cannon key (step 1001), the water cannon central operation panel 207 sends a pump activation command to the water cannon information processing panel 209. (Step 1002). When the water cannon information processing panel 209 receives this pump activation command, it activates the fire pump 211 (step 1003).

The water cannon central operation panel 207 also transmits a remote control valve opening command to the water cannon information processing panel 209 (step 1004). When the water cannon information processing panel 209 receives this remote control valve opening command, it opens the remote control valve 202A for the water cannon 201A (step 1005). As a result, water is sprayed from the water cannon 201A toward the fire source.

Another method of discharging water is a method of discharging water using the water cannon field operation panel 208. In this case, center personnel rush to the site and confirm the fire. The center personnel then operates the water cannon field operation panel 208A for operating the water cannon 201A to obtain operating authority. Then, the center staff performs a rotation operation of the water cannon 201A, selects a water spray pattern, and operates a water spray key (step 1006). In response to this operation, the water cannon field operation panel 208A transmits a pump activation command to the water cannon information processing panel 209 (step 1007). When the water cannon information processing panel 209 receives this pump activation command, it activates the fire pump 211 (step 1008).

The water cannon field operation panel 208A also transmits a remote control valve opening command to the water cannon information processing panel 209 (step 1009). When the water cannon information processing panel 209 receives this remote control valve opening command, it opens the remote control valve 202A for the water cannon 201A (step 1010). As a result, water is sprayed from the water cannon 201A toward the fire source.

When the fire is extinguished as a result of water spraying and a recovery operation is performed on the water cannon central control panel 207, the fire pump 211 is stopped.
The above is an explanation of the manual mode.

1-2-3. Normal Exploration FIG. 11 shows an example of an operational flow 1100 for normal exploration. The normal search shown in the figure is executed by the normal search section 701 of the water cannon/fire search control panel 205 or the fire search control panel 206.

The normal detection unit 701 moves the infrared camera 403 of the fire detection device 203 to one of the 12 monitoring positions (step 1101). In addition, the normality detection unit 701 acquires mask data corresponding to the monitoring position of the movement destination (step 1102). The normal exploration unit 701 then acquires a thermal image captured by the infrared camera 403 that has moved to the monitoring position (step 1103).

After acquiring the thermal image, the normal search unit 701 analyzes the acquired thermal image and extracts the pixel with the highest temperature (step 1104). At this time, the normal search unit 701 extracts the highest temperature pixel for each of the four areas formed by dividing the thermal image into four areas in the vertical direction. However, the normal search unit 701 does not extract pixels from the mask area indicated by the acquired mask data.

After extracting pixels from each area, the normal search unit 701 performs distance conversion on the maximum temperature of each pixel (step 1105). Specifically, the normality detection unit 701 multiplies the maximum temperature of each pixel by a correction coefficient according to the corresponding area. For example, the normality detection unit 701 multiplies the maximum temperature of a pixel in the first area by a correction coefficient corresponding to the first area.

After converting the distance, the normal exploration unit 701 compares the calculated converted value with the fire determination temperature setting value (step 1106). As a result of this comparison, if any of the converted values is less than or equal to the fire determination temperature setting value (NO in step 1106), the normality detection unit 701 returns to step 1101 and moves the infrared camera 403 to the next monitoring position. On the other hand, as a result of this comparison, if any of the converted values exceeds the fire judgment temperature setting value (YES in step 1106), the normality detection section 701 next selects a converted value that exceeds the fire judgment temperature setting value. The number of pixels it has is compared with the set number (step 1107).

As a result of this comparison, if the number of pixels is less than the set number (NO in step 1107), the normal search unit 701 returns to step 1101 and moves the infrared camera 403 to the next monitoring position. On the other hand, as a result of this comparison, if the number of pixels is equal to or greater than the set number (YES in step 1107), the normal search unit 701 calculates the approximate position of the fire source (step 1108). At this time, the normal search unit 701 calculates the approximate position of the fire source from the rotation angle and depression angle of the infrared camera 403 and the acquired image.

After calculating the approximate location of the fire source, the normal exploration unit 701 notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of a fire and the approximate location of the fire source (step 1109).
The above is an explanation of normal exploration.

1-2-4. Fixed Point Search FIG. 12 shows an example of an operational flow 1200 for fixed point search. The fixed point search shown in the figure is executed by the fixed point search section 702 of the water cannon/fire search control panel 205 or the fire search control panel 206.

The fixed point exploration unit 702 moves the infrared camera 403 of the fire exploration device 203 to a prespecified monitoring position (step 1201). In addition, the fixed point exploration unit 702 acquires mask data corresponding to the monitoring position of the movement destination (step 1202). The fixed point exploration unit 702 then acquires a thermal image captured by the infrared camera 403 that has moved to the monitoring position (step 1203).

After acquiring the thermal image, the fixed point exploration unit 702 analyzes the acquired thermal image and extracts the pixel with the highest temperature (step 1204). At this time, the fixed point search unit 702 extracts the highest temperature pixel for each of the four areas formed by dividing the thermal image into four areas in the vertical direction. However, the fixed point search unit 702 does not extract pixels from the mask area indicated by the acquired mask data.

After extracting pixels from each area, the fixed point search unit 702 performs distance conversion on the maximum temperature of each pixel (step 1205). Specifically, the fixed point search unit 702 multiplies the maximum temperature of each pixel by a correction coefficient according to the corresponding area.

After converting the distance, the fixed point exploration unit 702 compares the calculated converted value with the fire determination temperature setting value (step 1206). As a result of this comparison, if any of the converted values is the fire determination temperature set value (NO in step 1206), the fixed point exploration unit 702 returns to step 1203 and acquires the next thermal image. On the other hand, as a result of this comparison, if any of the converted values exceeds the fire judgment temperature set value (YES in step 1206), the fixed point exploration section 702 next selects a converted value that exceeds the fire judgment temperature set value. The number of pixels it has is compared with the set number (step 1207).

As a result of this comparison, if the number of pixels is less than the set number (NO in step 1207), the fixed point exploration unit 702 returns to step 1203 and acquires the next thermal image. On the other hand, as a result of this comparison, if the number of pixels is equal to or greater than the set number (YES in step 1207), the fixed point search unit 702 calculates the approximate position of the fire source (step 1208). At this time, the fixed point exploration unit 702 calculates the approximate position of the fire source from the rotation angle and depression angle of the infrared camera 403 and the acquired image.

After calculating the approximate location of the fire source, the fixed point exploration unit 702 notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of a fire and the approximate location of the fire source (step 1209).
The above is an explanation of fixed point exploration.

1-2-5. A Exploration FIG. 13 shows an example of an operational flow 1300 for A Exploration. The A search shown in the figure is executed by the A search section 703 of the water cannon/fire search control panel 205 or the fire search control panel 206.

The A search differs in the execution entity, but in terms of the process itself, it shares steps 1101 to 1109 with the normal search. Since these steps have already been explained, their explanation will be omitted here.

In exploration A, unlike normal exploration, all monitoring positions are surveyed at least once, regardless of fire detection. Therefore, the A search includes steps 1301 and 1302.

In step 1301, the A search unit 703 determines whether the infrared camera 403 has gone around the monitoring position. As a result of this determination, if the infrared camera 403 has not gone around the monitoring position (NO in step 1301), the A exploration unit 703 returns to step 1101 and moves the infrared camera 403 to the next monitoring position. On the other hand, as a result of this determination, if the infrared camera 403 has made one round of the monitoring position (YES in step 1301), the A exploration unit 703 next determines whether or not a fire source candidate exists (step 1302). .

Specifically, the A search unit 703 determines whether or not the determination in step 1107 is "YES" while the infrared camera 403 makes one round of the monitoring position. As a result of this determination, if the determination is not "YES" (NO in step 1302), the A exploration unit 703 returns to step 1101 and moves the infrared camera 403 to the next monitoring position. On the other hand, if the result of this determination is "YES" (YES in step 1302), the A exploration unit 703 calculates the approximate position of the fire source (step 1108). At this time, the A search unit 703 calculates the approximate position of the fire source from the rotation angle and depression angle of the infrared camera 403 and the acquired image.

After calculating the approximate location of the fire source, the A exploration unit 703 notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of a fire and the approximate location of the fire source (step 1109).
The above is an explanation of A exploration.

1-2-6. B Exploration FIG. 14 shows an example of an operational flow 1400 for B Exploration. The B search shown in the figure is executed by the B search section 704 of the water cannon/fire search control panel 205 or the fire search control panel 206.

The B exploration unit 704 determines the movement angle (swivel angle and depression angle) of the infrared camera 403 so that the fire source is approximately at the center of the screen, based on the approximate fire source position obtained in the normal exploration, fixed point exploration, or A exploration. Calculate (step 1401). After calculating the movement angle, the B exploration unit 704 determines whether the calculated depression angle is less than or equal to 0 degrees (step 1402). As a result of this determination, if the calculated depression angle is greater than 0 degrees (NO in step 1402), there is a high possibility that the fire source is sunlight, so the B exploration unit 704 ends the B exploration. Therefore, false detection of fire is prevented. On the other hand, if the calculated depression angle is 0° (horizontal) or less (YES in step 1402), the B exploration unit 704 moves the infrared camera 403 so that the fire source is approximately at the center of the screen (step 1403). ).

After moving the infrared camera 403, the B exploration unit 704 acquires a plurality of thermal images captured by the infrared camera 403 (step 1404). After acquiring the thermal images, the B search unit 704 analyzes the acquired thermal images and extracts the highest temperature pixel in each thermal image (step 1405). Then, the B search unit 704 performs distance conversion on the extracted maximum temperature of each pixel (step 1406). Specifically, the B search unit 704 calculates a correction value by applying the maximum temperature of each pixel to a predetermined correction formula. However, at this time, if the maximum temperature is equal to or higher than the forced alarm determination temperature (400°C), the B exploration unit 704 replaces it with the forced alarm replacement temperature (1000°C) instead of applying the above correction formula. . As a result of this correction, false detection of fire can be more reliably prevented in step 1408, which will be described later.

After distance conversion, the B search unit 704 counts the number of pixels in each thermal image for which the correction value exceeds the fire determination temperature setting value (step 1407). As a result of this counting, if the number of pixels counted in all thermal images is less than the set number (NO in step 1407), the B search unit 704 ends the B search. On the other hand, as a result of this counting, if the number of pixels counted in any of the thermal images is equal to or greater than the set number (YES in step 1407), the B search unit 704 next calculates the highest temperature among the plurality of thermal images. The correction values are compared (step 1408).

As a result of this comparison, if the difference between the maximum and minimum correction values is less than or equal to the predetermined threshold (NO in step 1408), the B exploration unit 704 ends the B exploration. This is because the fact that there is no or small temperature difference between images means that the fire source represented by those images is likely to be sunlight or its metallic reflection, rather than a flame whose temperature fluctuates. In this way, by canceling the fire determination when the temperature difference is less than or equal to a predetermined threshold value, false detection of fire can be prevented.
After the B search is completed, the A search is executed again.

On the other hand, as a result of this comparison, if the difference between the maximum and minimum correction values exceeds a predetermined threshold (YES in step 1408), the B exploration unit 704 calculates the detailed fire source position (step 1409). At this time, the B exploration unit 704 calculates the detailed position of the fire source from the rotation angle and depression angle of the infrared camera 403 and the acquired image.

After calculating the detailed location of the fire source, the B exploration unit 704 notifies the water cannon information processing panel 209 of the exploration results indicating the occurrence of a fire and the detailed location of the fire source (step 1410).
The above is an explanation of exploration B.

2. Modifications The above embodiment may be modified as follows. The following variants may be combined with each other.
(1) In the above embodiment, a baseball stadium is assumed as the fire prevention object. However, the fire prevention target is not limited to a baseball field, and may be any other facility that can accommodate spectators.

(2) In the above normal exploration and A exploration, 12 monitoring positions are assumed, but the number of monitoring positions may be changed as appropriate depending on the fire prevention target and the number of fire detection devices 203 to be installed. .

(3) In the B search described above, if the condition that the elevation angle of the electric pan head 402 is 0° (horizontal) or less is not satisfied, the fire determination by the normal search unit 701 and the like is canceled. However, this condition is just an example, and the threshold value of the elevation angle may be changed as appropriate depending on the fire prevention target.

(4) In the above exploration B, the forced alarm determination temperature is assumed to be 400°C, and the forced alarm replacement temperature is assumed to be 1000°C. However, these values are just examples, and may be changed as appropriate depending on the assumed false detection target and the specifications of the device.

(5) In the B exploration described above, the maximum temperature correction value is compared between multiple thermal images, and if the difference between the maximum and minimum correction values is less than a predetermined threshold, the normal exploration unit 701 etc. The fire judgment has been canceled. Instead of this determination method, if the maximum temperature correction values match among a plurality of thermal images, the fire determination by the normal exploration unit 701 or the like may be canceled. In other words, if the difference in correction values between the plurality of thermal images is less than or equal to zero, the fire determination by the normal search unit 701 or the like may be canceled.

(6) In the above embodiment, the water cannon/fire exploration control panel 205 has the functions shown in FIG. 7, and the water cannon central operation panel 207 has the functions shown in FIG. However, such a functional arrangement is just an example, and some or all of the functions of the water cannon/fire exploration control panel 205 and the water cannon central operation panel 207 may be distributed to other devices.

Note that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the embodiments described above are described in detail to explain the present invention in an easy-to-understand manner, and the present invention is not necessarily limited to having all the configurations described. Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add, delete, or replace a part of the configuration of each embodiment with other configurations.

Further, each of the above-mentioned configurations, functions, processing units, processing means, etc. may be partially or entirely realized in hardware by designing, for example, an integrated circuit. Further, each of the above-mentioned configurations, functions, etc. may be realized by software by a processor interpreting and executing a program for realizing each function. Information such as programs, tables, files, etc. that implement each function can be stored in a memory, a recording device such as a hard disk, an SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.

Further, the control lines and information lines are shown to be necessary for explanation purposes, and not all control lines and information lines are necessarily shown in the product. In reality, almost all components may be considered to be interconnected.
Note that the above-described embodiments disclose at least the configuration described in the claims.

DESCRIPTION OF SYMBOLS 101...Field part, 102...Spectator seat, 201...Water cannon, 202...Remote control valve, 203...Fire detection device, 204...Fire detection device relay board, 205...Water cannon/fire detection control panel, 206...Fire detection control Panel, 207...Water cannon central operation panel, 208...Water cannon field operation panel, 209...Water cannon information processing panel, 210...Receiver, 211...Fire pump, 212...Pump control panel,
401, 402...Electric camera head, 403...Infrared camera, 404...Visible camera, 701...Normal exploration section, 702...Fixed point exploration section, 703...A exploration section, 704...B exploration section, 705...Water cannon control section, 801 ...Water cannon control command unit, 802...Automatic water discharge determination unit, 803...Water cannon control command unit, 804...Notification unit

Claims (7)

fire exploration means for exploring a monitoring area set as a fire prevention target and acquiring an image of the monitoring area;
a fire source position identifying means for identifying the fire source position from the image acquired by the fire exploration means;
automatic water spray determination means for determining whether the identified fire source position is included in a predetermined automatic water spray target area;
A water cannon system comprising: water discharge control command means for starting water discharge from a water cannon to the fire source position when the fire source position is included in the automatic water discharge target area. Claim 1, further comprising notification means for notifying the user that automatic water spraying will not be performed instead of the water spraying when the fire source position is not included in the automatic water spraying target area. The water cannon system described in. The fire prevention object is a facility that can accommodate spectators,
The water cannon system according to claim 1 or 2, wherein the automatic water cannon target area does not include audience seats. The fire exploration means is an infrared camera attached to an electric pan head so as to be able to rotate and raise and lower, and is equipped with an infrared camera that sequentially stops at a plurality of monitoring positions to acquire images,
A mask area is set for each of the plurality of monitoring positions,
Analyzing the image acquired by the infrared camera at the first monitoring position, the temperature at the highest temperature position exceeds a predetermined threshold, and the highest temperature position corresponds to the first monitoring position. Further comprising a fire determination means for determining a fire when the mask area is not included,
The fire source position specifying means specifies the fire source position from an image acquired by the fire exploration means that includes the highest temperature position when a fire is determined by the fire determination means. The water cannon system according to claim 1 or 2, characterized in that: further comprising a pan head control means for controlling the electric pan head so that the highest temperature position is approximately at the center of the screen of the infrared camera when the fire determination means determines that there is a fire;
The fire source position specifying means specifies the fire source position from an image including the highest temperature position when the controlled elevation angle of the electric pan head satisfies a predetermined condition. 4. The water cannon system according to item 4. 5. The fire source position specifying means specifies the fire source position from an image including the highest temperature position when the elevation angle of the controlled electric pan head is below horizontal. The water cannon system described in . Further comprising temperature correction means for correcting the temperature to a predetermined temperature higher than the temperature when the temperature indicated by the image including the maximum temperature position is equal to or higher than a predetermined threshold;
The fire source position specifying means compares the corrected temperature between a plurality of images, and when the temperature difference exceeds a predetermined threshold value, specifies the fire source position from the image including the highest temperature position. The water cannon system according to claim 5, characterized in that:

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