JP7470023B2 - Fire Suppression System - Google Patents

Description

The present invention relates to a fire extinguishing system.

Conventionally, water-discharge head sprinkler systems have been known as sprinkler systems installed in high ceiling areas such as atriums and exhibition halls. For example, Patent Document 1 describes a water-discharge head sprinkler system that includes multiple movable heads installed in a protected area, a central control panel that activates the movable heads in response to a fire signal to search for the fire source and instruct water discharge, and an on-site control panel for manually and remotely operating the movable heads.

JP 2013-230409 A

Conventional on-site operation panels had to be installed in a position where the movable head they were operating could be seen. This is because the user of the on-site operation panel had to operate it while looking at the movable head they were operating. As a result, conventional on-site operation panels had the problem that the locations where they could be installed were limited.

The present invention was made in consideration of these circumstances, and aims to improve the flexibility of on-site control panel installation.

In order to solve the above problems, the fire extinguishing system of the present invention is a fire extinguishing system comprising a fire extinguishing device, a local control panel for instructing the discharge of water from the fire extinguishing device, and a portable local operation unit that can be freely connected to the local control panel so as to be able to communicate with the local control panel and has a display unit and an operation unit, wherein the local control panel acquires status information of the fire extinguishing device, the local operation unit acquires the status information from the local control panel and displays it on the display unit, and when a user operates the operation unit to control the discharge of water from the fire extinguishing device, the local operation unit outputs an operation signal representing the operation to the local control panel, and the local control panel instructs the discharge of water from the fire extinguishing device in response to the output operation signal.

In a preferred embodiment, the device further includes a central operation panel communicatively connected to the fire extinguishing device, the local operation unit is freely connectable to the central operation panel so as to be communicatively connected to the central operation panel, and the central operation panel performs an operation test of the local operation unit while the local operation unit is connected to the device itself, and displays the results of the operation test on the display unit of the device itself.

In a further preferred embodiment, the central operation panel stores partition information that associates the fire extinguishing device with the partition in which the fire extinguishing device is set, and outputs the partition information to the local operation unit and stores it while the local operation unit is connected to the central operation panel.

The present invention allows for greater freedom in the installation of on-site control panels.

Block diagram showing the configuration of a fire extinguishing system 1 A block diagram showing an example of the internal configuration of the central operation panel 3. A diagram showing an example of an inspection screen FIG. 13 is a diagram showing the operation of the nozzle unit 4 when a fire occurs. A block diagram showing an example of the internal configuration of a local control panel 5. FIG. 2 is a diagram showing an example of the appearance of a local operation unit 6. FIG. 2 is a block diagram showing an example of the internal configuration of the local operation unit 6. FIG. 13 is a diagram showing an example of a nozzle selection screen. FIG. 13 is a diagram showing an example of a status display screen of the nozzle unit 4. FIG. 13 is a diagram showing an example of an operation screen. FIG. 11 is a diagram showing another example of the operation screen. An example of a recovery screen A diagram showing an example of a test screen. FIG. 1 shows a first transmission mode. FIG. 2 shows a second transmission mode. Sequence diagram showing automatic fire extinguishing mode Sequence diagram showing manual extinguishing mode Another sequence diagram showing the manual extinguishing mode Sequence diagram showing water discharge stop and recovery operations Another sequence diagram showing water discharge stop and recovery operations FIG. 1 shows a configuration of a fire extinguishing system 10. A block diagram showing an example of the internal configuration of a sprinkler control panel 14. FIG. 13 is a diagram showing an example of a display operation panel 143. A block diagram showing an example of the internal configuration of a local control panel 15. FIG. 2 is a block diagram showing an example of the internal configuration of a local operation unit 16. FIG. 13 is a diagram showing an example of a display operation panel 163. Sequence diagram showing automatic water discharge mode Sequence diagram showing automatic water discharge mode Sequence diagram showing manual water discharge mode Sequence diagram showing manual water discharge mode

1. First embodiment 1-1. Configuration A fire extinguishing system 1 according to a first embodiment of the present invention will be described with reference to the drawings.
A fire extinguishing system 1 according to this embodiment is a sprinkler system such as a water-discharging head installed in a high ceiling portion of a building B. Fig. 1 is a block diagram showing the configuration of this fire extinguishing system 1. The fire extinguishing system 1 shown in the figure includes an automatic fire alarm system 2, a central operation panel 3, a plurality of nozzle units 4, a local control panel 5, and a local operation unit 6. Each component will be described below.

1-1-1. Automatic fire alarm system 2
The automatic fire alarm system 2 comprises a number of sensors installed in the high ceiling of building B, and an R-type fire receiver installed in the disaster prevention center of building B (both not shown). The sensors are, for example, smoke detectors or flame detectors, and transmit analog values indicating the measured physical quantities to the fire receiver. When the physical quantity measured by the detector exceeds a predetermined threshold and the duration of this measurement exceeds a predetermined time, the fire receiver transmits a sensor alarm signal to the central operation panel 3. This sensor alarm signal includes information indicating the fire compartment of the sensor that triggered the alarm.

1-1-2. Central Operation Panel 3
The central operation panel 3 is a device for automatically or manually remotely controlling the nozzle unit 4. This central operation panel 3 is installed in the disaster prevention center of the building B and is connected to a fire receiver via a signal line L1. 2 is a block diagram showing an example of the internal configuration of the central operation panel 3. The central operation panel 3 shown in the figure includes a control unit 31, a storage unit 32, a display unit 33, an operation unit 34, and Equipped with a communication unit 35.

The control unit 31 is composed of a processor and a memory, and various functions are realized by the processor executing programs stored in the memory. The realized functions include a nozzle control unit 311, a nozzle information management unit 312, a test unit 313, a display control unit 314, a partition information management unit 315, and a partition information synchronization unit 316.

Of these, the nozzle control unit 311 controls the nozzle unit 4 in response to a detector alarm signal sent from the fire receiver or in response to operations by center personnel.

The nozzle information management unit 312 acquires and manages nozzle information from each nozzle unit 4 to support operations by center personnel. The nozzle information referred to here specifically refers to the status information of the nozzle unit 4, operation authority information, and local independent information. Of these, the local independent information is information that indicates whether the local control panel 5 is in a state in which it does not accept control from the central operation panel 3 (in other words, in a local independent state). When a nozzle unit 4 in a local independent state is spraying water, the spraying of water from other nozzle units 4 is restricted.

Next, the test unit 313 periodically performs an operation test on the local operation unit 6 connected to the central operation panel 3. The operation test referred to here is a test to check the communication status of the local operation unit 6. The test unit 313 sends a status check command to the local operation unit 6, and judges it to be normal if a response is received, and judges it to be abnormal if no response is received. By periodically performing the operation test in this way, it is possible to prevent a situation in which the local operation unit 6 cannot be used when it is actually needed.

The display control unit 314 generates an operation screen for the central operation panel 3 and displays it on the display unit 33. The displayed screen includes an inspection screen. This inspection screen shows the results of an operational test of the local operation unit 6. Figure 3 shows an example of this inspection screen. The inspection screen shown in the figure shows that the communication status of the local operation unit 6A is normal, and that the communication status of the local operation unit 6B is abnormal.

The area information management unit 315 manages area information to support operations by center personnel. Area information here refers to information that associates identification information of a protected area with identification information of the nozzle unit 4 set in that protected area. This area information is edited on the surface of the central operation panel 3 or on a PC connected to the central operation panel 3.

The partition information synchronization unit 316 synchronizes the partition information stored in the local operation unit 6 with the partition information stored in the central operation panel 3. This synchronization process is executed when the central operation panel 3 is started up and when the partition information is updated in the central operation panel 3. This synchronization process makes it possible to keep the partition information stored in the local operation unit 6 up to date.

1-1-3. Nozzle unit 4
Next, the nozzle unit 4 will be described.
The nozzle unit 4 is a fire extinguishing device installed in the high ceiling of the building B, and specifically, is a movable head. As shown in FIG. 1, the nozzle unit 4 is communicatively connected to the central operation panel 3 via a loop-shaped wiring L2. The nozzle unit 4 is also communicatively connected to the local control panel 5 via a loop-shaped wiring L3. In other words, the nozzle unit 4 is not individually connected to the central operation panel 3 and the local control panel 5. Therefore, the number of wires connected to the central operation panel 3 and the local control panel 5 is reduced compared to the case where they are individually connected.

This nozzle unit 4 comprises a water discharge unit 41, a sensing unit 42, a control unit 43 and a signal relay unit 44 (for the water discharge unit 41 and the sensing unit 42, see Figure 4. For the control unit 43 and the signal relay unit 44, they are not shown).

The water discharge section 41 is a combination nozzle with three types of heads, long-distance, medium-distance, and short-distance, integrated into one structure.

The sensing unit 42 is equipped with an infrared linear sensor 421 and a flame detector 422. Of these, the infrared linear sensor 421 detects high temperature points within the alert area and detects their direction. On the other hand, the flame detector 422 is an infrared three-wavelength flame detector, and detects the source of fire in the direction detected by the infrared linear sensor 421.

The control unit 43 receives signals from the central operation panel 3 and the local control panel 5, and controls the water discharge unit 41 and the detection unit 42 in response to the received signals. In addition, it manages the status information, operation authority information, and local independent information of the nozzle unit 4 in response to the received signals. Of this information, the states represented by the status information include storage, fire source search in progress, fire source confirmed, water discharge, abnormality, and contamination. Of these states, abnormality refers to a power supply abnormality, rotation abnormality, detection abnormality, or communication abnormality. Contamination refers to contamination of the light receiving window of the detection unit 42.

The signal relay unit 44 relays signals exchanged between other nozzle units 4 and the central operation panel 3 or the local control panel 5.

FIG. 4 is a diagram showing the operation of this nozzle unit 4 in the event of a fire.
The nozzle unit 4 is normally stored in a state embedded in the wall (FIG. 4(a)). When an exploration start signal is input from the central operation panel 3 in this state, the nozzle unit 4 is activated, and the water discharge unit 41 and the detection unit 42 start rotating together (FIG. 4(b)). After the rotation starts, the infrared linear sensor 421 searches for a high-temperature point in the warning area and detects its direction (FIG. 4(c)). When the direction of the high-temperature point is detected, the front of the flame detector 422 is directed toward the detected direction, and the flame detector 422 detects the fire source F in that direction (FIG. 4(d)). When the fire source F is detected, the control unit 43 transmits a fire source position signal indicating the rotation angle to the central operation panel 3. After transmitting the fire position signal, the nozzle outlet of the water discharge unit 41 is directed toward the detected fire source F, and the nozzle unit 4 is in a standby state in this state (FIG. 4(e)). After that, when a water discharge start signal is transmitted from the central operation panel 3 to the nozzle unit 4, the water discharge unit 41 discharges water toward the fire source F.

1-1-4. Local control panel 5
Next, the local control panel 5 will be described.
The local control panel 5 is a device for manually and remotely controlling the nozzle unit 4. This local control panel 5 is installed in the protected area in which the nozzle unit 4 is installed. A portable local operation unit 6 is detachably connected to this local control panel 5. This local operation unit 6 has a touch screen 62 as described below, and the local control panel 5 is operated using this local operation unit 6. Therefore, the local control panel 5 does not need to have a display unit and an operation unit. Therefore, the local control panel 5 can be made smaller than conventional local operation panels.

In addition, the local operation unit 6 is portable and connected to the local control panel 5 via a cable. Therefore, a user of the local operation unit 6 can operate the control panel at a location away from the local control panel 5. For example, the user can move to a location where the nozzle unit 4 is visible and operate the local control panel 5. Therefore, unlike conventional local operation panels, the local control panel 5 does not need to be installed in a location where the nozzle unit 4 is visible. In other words, the local control panel 5 has a high degree of freedom in installation. Also, since the local control panel 5 can be installed in an inconspicuous location, for example, there is no need to take care in manufacturing it to match the color of the wall at the installation location.

Next, the internal configuration of the local control panel 5 will be described.
5 is a block diagram showing an example of the internal configuration of the on-site control panel 5. The on-site control panel 5 shown in the figure includes a control unit 51, a storage unit 52, and a communication unit 53. Of these, the control unit 51 is composed of a processor and a memory, and various functions are realized by the processor executing a program stored in the memory. The realized functions include a nozzle information management unit 511, a nozzle information output unit 512, and a nozzle control unit 513.

The nozzle information management unit 511 acquires and manages nozzle information from each nozzle unit 4 to support operations by center personnel. As described above, the nozzle information referred to here is the status information of the nozzle unit 4, the operating authority information, and the local independent information.

The nozzle information output unit 512 outputs the nozzle information stored in the local control panel 5 to the local operation unit 6.

The nozzle control unit 513 controls the nozzle unit 4 in response to an operation signal input from the local operation unit 6.

1-1-5. Local operation unit 6
Next, the local operation unit 6 will be described.
The local operation unit 6 is a portable information processing device used to operate the local control panel 5. FIG. 6 is a diagram showing an example of the appearance of the local operation unit 6. The local operation unit 6 shown in the figure includes a substantially rectangular parallelepiped housing 61, a touch screen 62 and a call switch 63 arranged on the front side of the housing 61, and a jack 64 and a terminal 65 arranged on the bottom side of the housing 61. Among them, the call switch 63 is a switch for starting a call with the central operation panel 3. A call with the central operation panel 3 is made via a communication line (not shown) connecting the central operation panel 3 and the local control panel 5. The jack 64 is a socket into which a terminal of a headset for calling is inserted. The terminal 65 is a device for communication connection with the local control panel 5 and the central operation panel 3 via a cable (or via a cable and a connector box). The local operation unit 6 is detachably connected to the local control panel 5 and the central operation panel 3 via the terminal 65. The local operation unit 6 is normally connected to the central operation panel 3, and when in use, it is detached from the central operation panel 3, brought to the site, and connected to the local control panel 5.

Figure 7 is a block diagram showing an example of the internal configuration of the local operation unit 6. The local operation unit 6 shown in the figure includes a touch screen 62, a control unit 66, a storage unit 67, and a communication unit 68. Of these, the control unit 66 is composed of a processor and memory, and various functions are realized by the processor executing programs stored in the memory. The realized functions include a nozzle information acquisition unit 661, a display control unit 662, and an operation signal output unit 663.

The nozzle information acquisition unit 661 acquires nozzle information from the local control panel 5. This nozzle information is acquired when the local operation unit 6 is connected to the local control panel 5 and started up, and when the nozzle information is updated in the local control panel 5.

The display control unit 662 generates an operation screen for the local control panel 5 based on the nozzle information acquired by the nozzle information acquisition unit 661 and the partition information stored in the storage unit 67. The display control unit 662 then displays the generated operation screen on the touch screen 62.

When an operation is input to the touch screen 62, the operation signal output unit 663 outputs a signal representing the input operation to the local control panel 5.

Next, the operation screen generated by the display control unit 662 will be described. FIG. 8 is a diagram showing an example of a nozzle selection screen. The nozzle selection screen shown in the figure is a screen for selecting the nozzle unit 4 to be controlled. This screen shows the name and installation area of each nozzle unit 4 connected to the local control panel 5. In addition, the state of each nozzle unit 4 is shown in different colors. According to this screen, "SR-01" and "SR-06" are in a confirmed fire source state, "SR-03" is in a local single state, "SR-10" is spraying water, "SR-14" is in an abnormal or soiled state, and the others are in a stored state. Center personnel refer to this screen to select the nozzle unit 4 to be controlled. The selection operation is performed, for example, by touching the location on the screen where each "name of nozzle unit 4 (SR-**)" is displayed.

Figure 9 is a diagram showing an example of a status display screen for a selected nozzle unit 4. The status display screen shown in the figure includes tabs T1 to T4. Tab T1 is a button for instructing a transition to the status display screen, tab T2 is a button for instructing a transition to the operation screen, tab T3 is a button for instructing a transition to the recovery screen, and tab T4 is a button for instructing a transition to the test screen.

In addition, the status display screen shown in the figure includes an abnormality light Lp1 and a fire light Lp2. Of these, the abnormality light Lp1 turns on when the nozzle unit 4 is in an abnormal state, and the fire light Lp2 turns on when a detector alarm signal is input from the fire receiver. According to the screen, "SR-06" is not in an abnormal state, and a fire is occurring.

In addition, the screen shows the status of the nozzle. According to the screen, "SR-06" is confirmed to be the source of fire.

In addition, the screen includes an operation authority indicator light B1 and an operation authority button B2. Of these, the operation authority indicator light B1 lights up when the central operation panel 3 acquires operation authority, and goes out when the local control panel 5 acquires operation authority or when the operation authority is released. On the other hand, the operation authority button B2 is a button for causing the local control panel 5 to acquire operation authority.

In addition, the screen includes an operation screen button B3 and a nozzle selection screen button B4. The operation screen button B3 is a button for instructing the transition to the operation screen, and the nozzle selection screen button B4 is a button for instructing the transition to the nozzle selection screen.

Next, the operation screen will be described.
10 is a diagram showing an example of an operation screen. The operation screen shown in the figure includes the above-mentioned tabs T1 to T4, the abnormal light Lp1, and the fire light Lp2. In addition, the screen includes a water discharge preparation button B5. This water discharge preparation button B5 is a button for instructing water discharge preparation. On the screen, the water discharge preparation button B5 is in an unselected state.

In addition, the screen includes arrow buttons B6 to B9. These arrow buttons B6 to B9 are buttons for instructing the rotation of the water discharge section 41 of the nozzle unit 4. Of these buttons, arrow button B6 is a button for instructing a slow left turn, arrow button B7 is a button for instructing a high-speed left turn, arrow button B8 is a button for instructing a slow right turn, and arrow button B9 is a button for instructing a high-speed right turn. On the screen, the water discharge preparation button B5 has not been selected and water discharge preparation has not been completed, so these arrow buttons B6 to B9 are grayed out.

In addition, the screen includes a nozzle image P1. This nozzle image P1 is an image that indicates whether or not the nozzle unit 4 is in a stored state. According to the screen, "SR-06" is in a stored state. By looking at this nozzle image P1, center personnel can know whether or not the nozzle unit 4 is in a stored state.

In addition, the screen includes an indicator image P2. This indicator image P2 is an image that indicates the rotation angle of the water discharge section 41 of the nozzle unit 4. On the screen, the "SR-06" is in the stored state, so the bar P21 is not displayed.

In addition, the screen includes a start water discharge button B10 and a stop water discharge button B11. The start water discharge button B10 is a button for instructing the user to start discharging water, and the stop water discharge button B11 is a button for instructing the user to stop discharging water. On the screen, the start water discharge button B10 is grayed out because the preparation for water discharge button B5 has not been selected and preparation for water discharge has not been completed.

Figure 11 is a diagram showing another example of the operation screen. In the operation screen shown in the figure, the water discharge preparation button B5 has been selected, and water discharge preparation is complete. Therefore, the arrow buttons B6 to B9 and the water discharge start button B10 are selectable on the screen. In addition, on the screen, as shown in the nozzle image P1, "SR-06" is in a non-stored state. Therefore, a bar P21 is displayed on the indicator image P2. On the screen, this bar P21 is located in the center, which indicates that the water discharge section 41 of the nozzle unit 4 is facing forward. Note that this bar P21 moves left when the water discharge section 41 turns left, and moves right when it turns right.

Next, the restoration screen will be described.
12 is a diagram showing an example of a recovery screen. The recovery screen shown in the figure includes the above-mentioned tabs T1 to T4, the abnormal light Lp1, the fire light Lp2, and the nozzle selection screen button B4. In addition, the screen includes a recovery button B12 and an execute button B13. The recovery button B12 is a button for instructing the recovery of the nozzle unit 4, and the execute button B13 is a button for instructing the nozzle unit 4 to change to a local independent state.

Next, the test screen will be described.
13 is a diagram showing an example of a test screen. The test screen shown in the figure includes the above-mentioned tabs T1 to T4, the abnormal light Lp1, the fire light Lp2, and a nozzle selection screen button B4. In addition, the screen includes an execute button B14. This execute button B14 is a button for instructing a self-check test of the nozzle unit 4.

1-2. Operation The following describes the operation of the fire extinguishing system 1. Specifically, the following describes communication operation, fire extinguishing operation, and water discharge stop/recovery operation.

1-2-1. Communication Operation The central operation panel 3 and the local control panel 5 communicate with each nozzle unit 4 by a polling method. The polling method here refers to a communication method in which a master device periodically inquires of multiple slave devices about the presence or absence of a data transmission request. When communicating by this polling method, the central operation panel 3 and the local control panel 5 alternate between a first transmission mode and a second transmission mode for each polling. Fig. 14 is a diagram showing the first transmission mode, and Fig. 15 is a diagram showing the second transmission mode. In both figures, the control panel 7 refers to the central operation panel 3 and the local control panel 5.

In the first transmission mode shown in FIG. 14, the control board 7 transmits a signal in a clockwise route (see arrow A1). In response, each nozzle unit 4 transmits a signal in a counterclockwise route (see arrow A2). On the other hand, in the second transmission mode shown in FIG. 15, the control board 7 transmits a signal in a counterclockwise route (see arrow A3). In response, each nozzle unit 4 transmits a signal in a clockwise route (see arrow A4). In this way, by changing the signal transmission route for each polling, communication between the control board 7 and each nozzle unit 4 is possible even if a communication failure occurs in part of the network. For example, if the wiring between the control board 7 and the nozzle unit 4a is broken, the control board 7 cannot communicate with each nozzle unit 4 in the first transmission mode, but can communicate with each nozzle unit 4 in the second transmission mode.

When an event such as a command to start an exploration or a command to discharge water occurs, the control panel 7 stores the event in an event list. If an event exists in the event list, the control panel 7 interrupts the normal polling cycle once every two cycles to poll for the event. On the other hand, if no event exists in the event list, the control panel 7 polls each nozzle unit 4 to check its status. This polling checks the status of each nozzle unit 4 and where the operating authority is located.

1-2-2. Fire-extinguishing operation Next, the fire-extinguishing operation will be described. Specifically, the automatic fire-extinguishing mode and the manual fire-extinguishing mode will be described. Here, the automatic fire-extinguishing mode is a fire-extinguishing mode in which a series of operations from fire detection to water discharge are performed automatically. In contrast, the manual fire-extinguishing mode is a fire-extinguishing mode in which operations from fire detection to selection of the nozzle unit 4 most suitable for water discharge are performed automatically, and water discharge is started in response to operation of the central operation panel 3 or the local operation unit 6. These two fire-extinguishing modes can be switched by operating the central operation panel 3 on its panel.

1-2-2-1 Automatic Fire Extinguishing Mode Fig. 16 is a sequence diagram showing the automatic fire extinguishing mode.
When the central operation panel 3 receives a detector alarm signal from the fire receiver (step Sa1), it identifies the nozzle unit 4 installed in the alert zone of the detector that has triggered the alarm (step Sa2). Then, it transmits a search start signal to the identified nozzle unit 4 (step Sa3). At that time, if the central operation panel 3 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If confirmation is still not possible after the retry, it continues from the next polling cycle onwards.

When the nozzle unit 4 receives the search start signal, it starts searching for a fire source (step Sa4). In addition, it updates its own status information from "storage" to "search". Then, if a fire source is detected as a result of the fire source search (step Sa5), it transmits a fire source position signal indicating the rotation angle at the time of fire source detection to the central operation panel 3 (step Sa6). In addition, it updates its own status information from "search" to "determined".

When the central operation panel 3 receives fire source location signals from all nozzle units 4 in the fire compartment, or when a predetermined time has elapsed since receiving the first fire source location signal, it selects the nozzle unit 4 best suited for water discharge based on the received fire source location signal (step Sa7). For the method of selecting the nozzle unit 4 at this time, see, for example, JP 2000-093540 A. When the central operation panel 3 selects the nozzle unit 4 best suited for water discharge, it starts a fire pump (not shown) (step Sa8). In addition, it sends a water discharge start signal to the selected nozzle unit 4 (step Sa9). At this time, if the central operation panel 3 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If it still cannot confirm after the retry, it continues from the next polling cycle onwards.

When the nozzle unit 4 receives the water discharge start signal, it transfers the signal to the local control panel 5 (step Sa10). When the local control panel 5 receives the water discharge start signal, it opens the start valve (not shown) corresponding to the nozzle unit 4 (step Sa11). As a result, water is discharged from the nozzle unit 4 to the fire source.

After the start valve is opened, when the local control panel 5 receives an ON signal from a pressure switch (not shown) installed on the secondary side of the start valve (step Sa12), it transmits a water discharge signal indicating that water discharge has started to the nozzle unit 4 (step Sa13). When the nozzle unit 4 receives this water discharge, it updates its own status information from "Determined" to "Water Discharge" (step Sa14).
This concludes the description of the automatic fire extinguishing mode.

1-2-2-2. Manual extinguishing mode Fig. 17 is a sequence diagram showing the manual extinguishing mode. In the manual extinguishing mode shown in the figure, it is assumed that water discharge is started in response to the operation of the central operation panel 3.

After the central operation panel 3 selects the nozzle unit 4 best suited for water discharge (step Sa7), and the central staff performs an operation to obtain the operation authority (step Sb1), the central operation panel 3 sends an operation request signal to the nozzle unit 4 (step Sb2). If the central operation panel 3 does not receive an ACK from the nozzle unit 4, it performs a retry. If the ACK is still not received after the retry, it ends the operation. When the nozzle unit 4 receives the operation request signal, it updates its own operation authority information to the "central operation panel" (step Sb3). This update of the operation authority information is also reflected in the operation authority information stored in the central operation panel 3 through status confirmation. As a result, the central operation panel 3 becomes capable of performing the water discharge preparation operation.

After that, when the central operator performs a water discharge preparation operation (step Sb4), the central operation panel 3 sends a water discharge preparation signal to the nozzle unit 4 (step Sb5). At that time, if the central operation panel 3 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If it still cannot confirm after the retry, it ends the operation. When the nozzle unit 4 receives the water discharge preparation signal, it updates its own status information from "confirmed" to "prepared" (step Sb6). This update of the status information is also reflected in the status information stored in the central operation panel 3 through the status confirmation. As a result, the central operation panel 3 becomes capable of performing rotation and water discharge operations.

After that, when a rotation operation is performed by the center staff (step Sb7), the central operation panel 3 transmits a rotation signal to the nozzle unit 4 (step Sb8). When the nozzle unit 4 receives this rotation signal, it rotates the water discharge unit 41 in the direction indicated by the signal (step Sb9).

After that, when the central personnel performs the water discharge operation (step Sb10), the central operation panel 3 starts the fire pump (step Sb11). In addition, it sends a water discharge start signal to the nozzle unit 4 (step Sb12). At that time, if the central operation panel 3 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If confirmation is still not received after the retry, the operation ends.

When the nozzle unit 4 receives the water discharge start signal, it transfers the signal to the local control panel 5 (step Sb13). When the local control panel 5 receives the water discharge start signal, it opens the start valve corresponding to the nozzle unit 4 (step Sb14). As a result, water is discharged from the nozzle unit 4 toward the fire source.

After the start valve is opened, when the local control panel 5 receives an ON signal from a pressure switch installed on the secondary side of the start valve (step Sb15), it transmits a water discharge signal indicating that water discharge has started to the nozzle unit 4 (step Sb16). When the nozzle unit 4 receives this water discharge signal, it updates its own status information from "Determined" to "Water Discharge" (step Sb17).
This concludes the description of the manual extinguishing mode.

Next, FIG. 18 is another sequence diagram showing the manual fire extinguishing mode. In the manual fire extinguishing mode shown in the figure, it is assumed that water discharge is started in response to the operation of the local operation unit 6 connected to the local control panel 5.

After the nozzle unit 4 best suited for water discharge is selected on the central operation panel 3 (step Sa7), the center personnel performs an operation to obtain operation authority on the local operation unit 6 (step Sc1), and the local control panel 5 sends an operation request signal to the nozzle unit 4 (step Sc2). At that time, if the local control panel 5 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If it still cannot be confirmed after the retry, it ends the operation. When the nozzle unit 4 receives the operation request signal, it updates its own operation authority information to the "local control panel" (step Sc3). This update of the operation authority information is also reflected in the operation authority information stored in the local control panel 5 through status confirmation. As a result, the local operation unit 6 becomes able to perform water discharge preparation operations.

After that, when the center personnel performs a water discharge preparation operation on the local operation unit 6 (step Sc4), the local control panel 5 sends a water discharge preparation signal to the nozzle unit 4 (step Sc5). At that time, if the local control panel 5 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If it still cannot confirm after the retry, it ends the operation. When the nozzle unit 4 receives the water discharge preparation signal, it updates its own status information from "confirmed" to "prepared" (step Sc6). This update of the status information is also reflected in the status information stored in the local control panel 5 through the status confirmation. As a result, the local operation unit 6 becomes capable of rotation and water discharge operations.

After that, when the center personnel performs a rotation operation on the local operation unit 6 (step Sc7), the local control panel 5 sends a rotation signal to the nozzle unit 4 (step Sc8). When the nozzle unit 4 receives this rotation signal, it rotates the water discharge section 41 in the direction indicated by the signal (step Sc9).

After that, when the center staff performs a water discharge operation on the local operation unit 6 (step Sc10), the local control panel 5 sends a water discharge request signal to the nozzle unit 4 (step Sc11). At that time, if the local control panel 5 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If confirmation is still not possible after the retry, the operation is terminated.

When the nozzle unit 4 receives the water-discharge request signal, it transfers the signal to the central operation panel 3 (step Sc12). When the central operation panel 3 receives this water-discharge request signal, it starts the fire pump (step Sc13). In addition, it sends a water-discharge start signal to the nozzle unit 4 (step Sc14). When the nozzle unit 4 receives this water-discharge start signal, it transfers the signal to the local control panel 5 (step Sc15). When the local control panel 5 receives this water-discharge start signal, it opens the start valve corresponding to the nozzle unit 4 (step Sc16). As a result, water is discharged from the nozzle unit 4 to the fire source.

After the start valve is opened, when the local control panel 5 receives an ON signal from a pressure switch installed on the secondary side of the start valve (step Sc17), it sends a water discharge signal indicating that water discharge has started to the nozzle unit 4 (step Sc18). When the nozzle unit 4 receives this water discharge signal, it updates its own status information from "Determined" to "Water Discharge" (step Sc19).
This concludes the description of the manual extinguishing mode.

1-2-3. Water discharge stop and recovery operation Next, the water discharge stop and recovery operation will be described. Figure 19 is a sequence diagram showing the water discharge stop and recovery operation. The operation shown in the figure assumes a case where water discharge is stopped and restored in response to the operation of the central operation panel 3.

When a water-discharge stop operation is performed by a center staff member (step Sd1), the central operation panel 3 sends a water-discharge stop signal to the nozzle unit 4 (step Sd2). At that time, if the central operation panel 3 does not confirm an ACK from the nozzle unit 4, it performs a retry. If it still cannot confirm after the retry, it ends the operation. When the nozzle unit 4 receives the water-discharge stop signal, it transfers the signal to the local control panel 5 (step Sd3). When the local control panel 5 receives this water-discharge stop signal, it closes the start valve corresponding to the nozzle unit 4 (step Sd4). As a result, water discharge from the nozzle unit 4 stops.

After the start valve is closed, when the local control panel 5 receives an OFF signal from the pressure switch installed on the secondary side of the start valve (step Sd5), it sends a stop signal indicating that water discharge has stopped to the nozzle unit 4 (step Sd6). When the nozzle unit 4 receives this stop signal, it updates its own status information from "water discharge" to "confirmed" (step Sd7).

After that, when the central operation panel 3 performs a full recovery operation by the center personnel (step Sd8), it sends an operation request signal to the nozzle unit 4 (step Sd9). At that time, if the central operation panel 3 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If it cannot confirm even after the retry, it ends the operation. When the nozzle unit 4 receives the operation request signal, it updates its own operation authority information to "open" (step Sd10). "Open" here means that the operation authority does not exist in either the central operation panel 3 or the local control panel 5. In addition, the nozzle unit 4 executes a recovery operation (step Sd11), and when the recovery operation is completed, it updates its own status information from "confirmed" to "stored".

Thereafter, when the center personnel performs a pump stop operation on the fire pump panel (not shown), the central operation panel 3 turns off the fire pump operation display (step Sd12).
This concludes the explanation of how water discharge is stopped and restored.

Next, FIG. 20 is another sequence diagram showing the water discharge stop and recovery operations. The operations shown in the figure assume that water discharge is stopped and restored in response to the operation of the local operation unit 6 connected to the local control panel 5.

When the center personnel performs a water discharge stop operation on the local operation unit 6 (step Se1), the local control panel 5 sends a water discharge stop request signal to the nozzle unit 4 (step Se2). At that time, if the local control panel 5 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If it cannot confirm even after the retry, it ends the operation. When the nozzle unit 4 receives the water discharge stop request signal, it transfers the signal to the central operation panel 3 (step Se3). When the central operation panel 3 receives the water discharge stop request signal, it transmits a water discharge stop signal to the nozzle unit 4 (step Se4). When the nozzle unit 4 receives the water discharge stop signal, it transfers the signal to the local control panel 5 (step Se5). When the local control panel 5 receives the water discharge stop signal, it closes the start valve corresponding to the nozzle unit 4 (step Se6). As a result, water discharge from the nozzle unit 4 stops.

After the start valve is closed, when the local control panel 5 receives an OFF signal from the pressure switch installed on the secondary side of the start valve (step Se7), it sends a stop signal indicating that water discharge has stopped to the nozzle unit 4 (step Se8). When the nozzle unit 4 receives this stop signal, it updates its own status information from "water discharge" to "confirmed" (step Se9).

After that, when a recovery operation is performed on the local operation unit 6 by the center staff (step Se10), the local control panel 5 sends an operation request signal to the nozzle unit 4 (step Se11). At that time, if the local control panel 5 cannot confirm an ACK from the nozzle unit 4, it performs a retry. If confirmation is still not possible after the retry, it terminates the operation. When the nozzle unit 4 receives the operation request signal, it updates its own operation right information to "released" (step Se12). In addition, it executes a recovery operation (step Se13), and when the recovery operation is completed, it updates its own status information from "confirmed" to "stored".

Thereafter, when the center personnel performs the pump stop operation on the fire pump panel, the central operation panel 3 turns off the fire pump operation display (step Se14).
This concludes the explanation of how water discharge is stopped and restored.
In the above water-discharge stop and recovery operations, the central operation panel 3 outputs a water-discharge stop signal, but the nozzle unit 4 may output the water-discharge stop signal instead of the central operation panel 3. In that case, the nozzle unit 4 receives a water-discharge stop request signal transmitted from the local control panel 5 and transmits a water-discharge stop signal to the local control panel 5.

2. Modifications of the First Embodiment The above-described first embodiment may be modified as follows. Note that the following modifications may be combined with each other.

2-1. Modification 1
As described above, the sensing section 42 of the nozzle unit 4 is composed of the infrared linear sensor 421 and the flame detector 422. However, this configuration is merely an example. It may be composed of another sensor as long as it is capable of detecting and detecting a fire source.

2-2. Modification 2
An auxiliary sensor may be included in the fire extinguishing system 1. The auxiliary sensor here refers to a terminal device equipped with the sensing unit 42, the control unit 43, and the signal relay unit 44 of the nozzle unit 4. In other words, it refers to a nozzle unit 4 without the water discharge unit 41. This auxiliary sensor is installed in the high ceiling part of the building B.

The auxiliary sensor, like the nozzle unit 4, is communicatively connected to the central operation panel 3 via loop-shaped wiring L2. In addition, it is communicatively connected to the local control panel 5 via loop-shaped wiring L3.

This auxiliary sensor operates in the automatic extinguishing mode as follows.
First, when the central operation panel 3 receives a detector alarm signal from the fire receiver, it identifies the nozzle units 4 and auxiliary sensors installed within the alert zone of the detector that has triggered the alarm, and then transmits a search start signal to the identified nozzle units 4 and auxiliary sensors.

When the auxiliary sensor receives this search start signal, it starts searching for the fire source. Then, if the search finds a fire source, it sends a fire source position signal to the central operation panel 3, indicating the rotation angle at the time the fire source was detected.

When the central control panel 3 receives fire source position signals from all nozzle units 4 and auxiliary sensors in the fire compartment, or when a predetermined time has elapsed since receiving the first fire source position signal, it selects the nozzle unit 4 best suited for spraying water based on the received fire source position signal. In this way, the fire source position signal transmitted from the auxiliary sensor is referenced to select the nozzle unit 4 best suited for spraying water.

2-3. Modification 3
The local operation unit 6 includes a touch screen 62 as a display unit and an operation unit. In other words, the local operation unit 6 includes a display and a touch panel. Instead of the touch panel, another operation unit such as hard keys may be included.

2-4. Modification 4
The detector of the automatic fire alarm system 2 is not limited to an analog type, and may be a detector with a fixed sensitivity. Also, the fire receiver is not limited to an R type, and may be a P type.

2-5. Modification 5
The local operation unit 6 may be communicatively connected to the local control panel 5 wirelessly rather than by wire.

3. Second embodiment 3-1. Configuration A fire extinguishing system 10 according to a second embodiment of the present invention will be described with reference to the drawings.
The fire extinguishing system 10 according to this embodiment is a sprinkler system including a water-discharging head, similar to the fire extinguishing system 1 according to the first embodiment. However, unlike the first embodiment, a fixed head is used as the fire extinguishing device.

Figure 21 shows the configuration of this fire extinguishing system 10. The fire extinguishing system 10 shown in the figure is installed in a building C that has three protected compartments.

A smoke detector 11 is installed in each protected section of the building C. This smoke detector 11 is connected via a signal line to a fire receiver 12 installed in a disaster prevention center. This smoke detector 11 transmits a fire signal to the fire receiver 12 when it detects a fire.
The fire receiver 12 is connected via a signal line to a water sprinkler control panel 14 installed in a disaster prevention center, and upon receiving a fire signal, transfers the signal to the water sprinkler control panel 14. The water sprinkler control panel 14 is connected via a signal line to a remote control valve 18, and is a device for automatically or manually controlling the remote control valve 18.

Furthermore, a flame detector 13 is installed in each protected area of building C. This flame detector 13 is connected to the water sprinkler control panel 14 via a signal line. When this flame detector 13 detects a fire, it sends a fire signal to the water sprinkler control panel 14.

An on-site control panel 15 is installed in a position overlooking each of the protected areas of building C. This on-site control panel 15 is connected to the sprinkler control panel 14 via a signal line. This on-site control panel 15 is a device for manually controlling the remote control valve 18. A portable on-site operation unit 16 is detachably connected to this on-site control panel 15. This on-site operation unit 16 is an information processing device used to operate the on-site control panel 15.

Furthermore, a fixed head 17 is installed in each protected section of building C. This fixed head 17 is connected to the secondary side of a remotely operated valve 18 via piping. The primary side of the remotely operated valve 18 is connected to a pressurized water supply device 19 installed in the fire pump room via piping. This pressurized water supply device 19 is controlled by a pump control panel 20, which is connected to the sprinkler control panel 14 via a signal line.
The sprinkler control panel 14, the local control panel 15 and the local operation unit 16 will be described in more detail below.

3-1-1. Sprinkler control panel 14
Fig. 22 is a block diagram showing an example of the internal configuration of sprinkle control panel 14. Sprinkle control panel 14 shown in the figure includes control unit 141, storage unit 142, display operation panel 143, and communication unit 144. Of these components, display operation panel 143 will first be described.

Figure 23 is a diagram showing an example of the display operation panel 143. The display operation panel 143 shown in the figure is equipped with a fire light Lp3. This fire light Lp3 is an indicator light that turns on when a fire occurs. The display operation panel 143 also has a district light for each protected area. This district light is an indicator light for showing the status of a fire, and is composed of three indicator lights: a division light Lp4, a self-fire alarm light Lp5, and a dedicated fire extinguishing light Lp6.

The display operation panel 143 also includes a key switch Sw1. This key switch Sw1 is a switch for switching the water discharge mode between an automatic water discharge mode and a manual water discharge mode. Here, the automatic water discharge mode is a fire extinguishing mode in which a series of operations from fire detection to water discharge are performed automatically, while the manual water discharge mode is a fire extinguishing mode in which fire detection and the issuance of an alarm are performed automatically, and water discharge is initiated in response to the operation of the water discharge control panel 14 or the local operation unit 16.

The display operation panel 143 also includes a water discharge mode indicator light Lp7. This water discharge mode indicator light Lp7 is an indicator light for showing the selected water discharge mode. The display operation panel 143 also includes an audio stop switch Sw2. This audio stop switch Sw2 is a switch for stopping the sound of the fire alarm of the water sprinkler control panel 14.

The display operation panel 143 also includes a timer operation light Lp8. This timer operation light Lp8 is an indicator light that flashes from when a fire is confirmed until water discharge starts. The display operation panel 143 also includes a remaining time indicator D. This remaining time indicator D displays the time remaining from when a fire is confirmed until water discharge starts.

The display operation panel 143 also has a water discharge section selection switch Sw3 for each protected section. This water discharge section selection switch Sw3 is a switch for selecting a water discharge section. The display operation panel 143 also has a water discharge start switch Sw4, a water discharge light Lp9, and a water discharge stop switch Sw5. Of these, the water discharge start switch Sw4 is a switch for instructing the start of water discharge, the water discharge light Lp9 is an indicator light that turns on while water is being discharged, and the water discharge stop switch Sw5 is a switch for instructing the stop of water discharge.

The display operation panel 143 also includes a recovery switch Sw6. This recovery switch Sw6 is a switch for recovering the fire extinguishing system 10.

Next, the control unit 141 will be described.
The control unit 141 is composed of a processor and a memory, and various functions are realized by the processor executing programs stored in the memory. The realized functions include a water discharge control unit 1411, a display control unit 1412, and a signal transmission unit 1413, as shown in Fig. 22.

Of these, the water discharge control unit 1411 controls the discharge of water from the fixed head 17 in response to fire signals received from the fire receiver 12 and flame detector 13, or in response to operations by disaster prevention personnel.

The display control unit 1412 controls the display of the display operation panel 143 in response to fire signals received from the fire receiver 12 and the flame detector 13, or in response to operations by disaster prevention personnel.

The signal transmission unit 1413 transmits a display control signal to the local control panel 15 in response to a fire signal received from the fire receiver 12 and the flame detector 13, or in response to an operation by disaster prevention personnel. The transmitted display control signal is a signal for controlling the display of the display operation panel 163 of the local operation unit 16.

3-1-2. On-site control panel 15
As described above, the portable local operation unit 16 can be detachably connected to the local control panel 15. The portable local operation unit 16 is provided with a display operation panel 163 as described below, and the local control panel 15 is operated using this display operation panel 163. Therefore, the local control panel 15 does not need to be provided with a display operation panel. Therefore, the local control panel 15 can be made smaller than conventional local operation panels.

In addition, the local operation unit 16 is portable and connected to the local control panel 15 via a cable. Therefore, a user of the local operation unit 16 can operate the control panel at a location away from the local control panel 15. For example, the user can move to a location where the fixed head 17 is visible and operate the local control panel 15. Therefore, unlike conventional local operation panels, the local control panel 15 does not need to be installed in a location where the fixed head 17 is visible. In other words, the local control panel 15 has a high degree of freedom in installation. Also, since the local control panel 15 can be installed in an inconspicuous location, for example, there is no need to take care in manufacturing it to match the color of the wall at the installation location.

Next, the internal configuration of the local control panel 15 will be described.
Fig. 24 is a block diagram showing an example of the internal configuration of the on-site control panel 15. The on-site control panel 15 shown in the figure includes a control unit 151, a storage unit 152, and a communication unit 153. Of these, the control unit 151 is composed of a processor and a memory, and various functions are realized by the processor executing a program stored in the memory. The realized functions include a display control information management unit 1511, a display control information output unit 1512, and a signal transmission unit 1513.

The display control information management unit 1511 manages the display control information according to the display control signal received from the watering control panel 14. The managed display control information is information for controlling the display of the display operation panel 163 of the local operation unit 16. Specifically, it is a flag that indicates the on/off state of each indicator light.

The display control signal received by the display control information management unit 1511 includes a signal for controlling the water discharge lamp Lp17, which will be described later. There are two types of signals: a signal to instruct the water discharge lamp Lp17 to be turned on, and a signal to instruct the water discharge lamp Lp17 to be turned off. The former signal is sent from the water spray control panel 14 when the water discharge from the fixed head 17 starts, and the latter signal is sent from the water spray control panel 14 when the water discharge from the fixed head 17 stops. Therefore, these two signals can be said to be information that represents the water discharge state of the fixed head 17. When the display control information management unit 1511 receives the former signal of these two signals, it sets the water discharge lamp flag to on, and when it receives the latter signal, it sets the same flag to off. In this way, the flag is set according to the type of signal, so the water discharge lamp flag can also be said to be information that represents the water discharge state of the fixed head 17.

The display control information output unit 1512 outputs the display control information stored in the local control panel 15 to the local operation unit 16.

The signal transmission unit 1513 transmits a control signal to the watering control panel 14 in response to an operation signal input from the local operation unit 16.

3-1-3. Local operation unit 16
The local operation unit 16 has a substantially rectangular parallelepiped housing and a terminal arranged on the bottom surface of the housing (both not shown). The terminal is a device for communication connection with the local control panel 15 and the watering control panel 14 via a cable (or via a cable and a connector box). The local operation unit 16 is detachably connected to the local control panel 15 and the watering control panel 14 via the terminal. The local operation unit 16 is normally connected to the watering control panel 14, and when in use, it is removed from the watering control panel 14, brought to the site, and connected to the local control panel 15.

Figure 25 is a block diagram showing an example of the internal configuration of the local operation unit 16. The local operation unit 16 shown in the figure includes a control unit 161, a storage unit 162, a display operation panel 163, and a communication unit 164. Of these components, the display operation panel 163 will be described first.

Figure 26 is a diagram showing an example of the display operation panel 163. The display operation panel 163 shown in the figure is equipped with a fire light Lp10. This fire light Lp10 is an indicator light that turns on when a fire occurs. The display operation panel 163 also has a district light for each protected area. This district light is an indicator light that shows the status of a fire, and is composed of three indicator lights: a division light Lp11, a self-fire alarm light Lp12, and a dedicated fire extinguishing light Lp13.

The display/operation panel 163 also includes a key switch Sw7. This key switch Sw7 is a switch for selecting whether or not operation on the panel is possible. The display/operation panel 163 also includes an operation possible/not possible indicator light. This operation possible/not possible indicator light is an indicator light for showing whether or not operation on the panel is possible, and is composed of two indicator lights, an operation possible light Lp14 and an operation impossible light Lp15.

The display operation panel 163 also includes a timer operation light Lp16. This timer operation light Lp16 is an indicator light that flashes from when a fire is confirmed until water discharge starts. The display operation panel 163 also includes a timer stop switch Sw8. This timer stop switch Sw8 is a switch for stopping the countdown of the water discharge start timer.

The display operation panel 163 also has a water discharge section selection switch Sw9 for each protected section. This water discharge section selection switch Sw9 is a switch for selecting a water discharge section. The display operation panel 163 also has a water discharge start switch Sw10, a water discharge light Lp17, and a water discharge stop switch Sw11. Of these, the water discharge start switch Sw10 is a switch for instructing the start of water discharge, the water discharge light Lp17 is an indicator light that turns on while water is being discharged, and the water discharge stop switch Sw11 is a switch for instructing the stop of water discharge.

Next, the control unit 161 will be described.
The control unit 161 is composed of a processor and a memory, and various functions are realized by the processor executing a program stored in the memory. The realized functions include a display control information acquisition unit 1611, a display control unit 1612, and an operation signal output unit 1613, as shown in Fig. 25 .

The display control information acquisition unit 1611 acquires display control information from the local control panel 15. This display control information is acquired when the local operation unit 16 is connected to the local control panel 15 and started up, and when the display control information is updated in the local control panel 15.

The display control unit 1612 controls the display of the display operation panel 163 based on the display control information acquired by the display control information acquisition unit 1611.

When the display operation panel 163 is operated, the operation signal output unit 1613 outputs a signal representing the operation to the local control panel 15.

3-2. Operation The following describes the fire extinguishing operation of the fire extinguishing system 10. Specifically, the automatic water-discharge mode and the manual water-discharge mode will be described.

3-2-1 Automatic Water Discharge Mode Figures 27 and 28 are sequence diagrams showing the automatic water discharge mode.
When a fire breaks out in the building C and the smoke detector 11 detects the fire, it transmits a fire signal to the fire receiver 12. When the fire receiver 12 receives the fire signal, it transfers it to the water sprinkler control panel 14. Upon receiving the transfer (step Sf1), the water sprinkler control panel 14 turns on the automatic fire alarm light Lp5 of the protected section where the fire has occurred (step Sf2). In addition, it transmits an automatic fire alarm light on signal to the local control panel 15 (step Sf3). When the local control panel 15 receives the automatic fire alarm light on signal, it sets the automatic fire alarm light flag of the protected section where the fire has occurred to ON (step Sf4). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns on the automatic fire alarm light Lp12 of the protected section where the fire has occurred.

After that, when the flame detector 13 detects the fire, the flame detector 13 sends a fire signal to the water sprinkler control panel 14. When the water sprinkler control panel 14 receives the fire signal (step Sf5), it turns on the fire extinguishing light Lp6 in the protected area where the fire occurred (step Sf6). In addition, it sends a fire extinguishing light on signal to the local control panel 15 (step Sf7). When the local control panel 15 receives the fire extinguishing light on signal, it sets the fire extinguishing light flag of the protected area where the fire occurred to on (step Sf8). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns on the fire extinguishing light Lp13 in the protected area where the fire occurred.

When the water sprinkler control panel 14 determines that the smoke detector 11 and the flame detector 13 installed in the same protected area have been activated, it concludes that a fire has occurred (step Sf9). Then, it turns on the compartment light Lp4 and the fire light Lp3 of the protected area where the fire has occurred (step Sf10). In addition, it starts the countdown of the water discharge start timer (step Sf11), blinks the timer operation light Lp8, and displays the remaining time on the remaining time display D (step Sf12). Furthermore, it transmits a signal to turn on the compartment lights, etc. to the local control panel 15 (step Sf13). When the local control panel 15 receives the signal to turn on the compartment light flag, fire light flag, timer operation light flag, and operable light flag of the protected area where the fire has occurred (step Sf14). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns on the partition light Lp11 of the protected area where the fire has occurred, the fire light Lp10, and the operable light Lp14, and blinks the timer operation light Lp16.

After that, when the countdown of the water discharge start timer ends (step Sf15), the water discharge control panel 14 opens the remote control valve 18 of the protected area where the fire occurred and sends a pump start signal to the pump control panel 20 (step Sf16). As a result, water is discharged from the fixed head 17 in the protected area where the fire occurred. When the water discharge control panel 14 receives an ON signal from a pressure switch (not shown) as a result of this water discharge, it turns on the water discharge light Lp9 (step Sf17). In addition, it sends a water discharge light turn-on signal to the local control panel 15 (step Sf18). When the local control panel 15 receives the water discharge light turn-on signal, it sets the water discharge light flag to ON and sets the timer operation light flag to OFF (step Sf19). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns on the water discharge light Lp17 and turns off the timer operation light Lp16.

After that, when the disaster prevention personnel confirms that the fire has been extinguished and presses the water discharge stop switch Sw5 of the water discharge control panel 14 (step Sf20), the water discharge control panel 14 closes the remote control valve 18 opened in step Sf16 (step Sf21). As a result, the water discharge from the fixed head 17 stops. When the water discharge result, the water discharge control panel 14 receives an OFF signal from the pressure switch, it turns off the water discharge light Lp9 (step Sf22). In addition, it sends a water discharge light turn-off signal to the local control panel 15 (step Sf23). When the local control panel 15 receives the water discharge light turn-off signal, it sets the water discharge light flag to OFF (step Sf24). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns off the water discharge light Lp17.

After that, when the disaster prevention personnel presses the recovery switch Sw6 of the water sprinkler control panel 14 (step Sf25), the water sprinkler control panel 14 turns off the partition lights Lp4, the fire alarm lights Lp5, and the fire extinguishing lights Lp6 of all the protected sections (step Sf26). In addition, it transmits a partition light etc. turn-off signal to the local control panel 15 (step Sf27). When the local control panel 15 receives the partition light etc. turn-off signal, it sets the partition light flag, the fire alarm light flag, and the fire extinguishing lights flag of all the protected sections to off (step Sf28). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns off the partition lights Lp11, the fire alarm lights Lp12, and the fire extinguishing lights Lp13 of all the protected sections.
The above is a description of the automatic water discharge mode.

In the above-mentioned automatic water discharge mode, if disaster prevention personnel check the site and determine that it is not a fire alarm, the countdown of the water discharge start timer may be stopped. There are two methods for stopping the countdown: operating the key switch Sw1 on the water discharge control panel 14 to switch the water discharge mode to the manual water discharge mode, or pressing the timer stop switch Sw8 on the local operation unit 16. In the latter of these two methods, when the timer stop switch Sw8 on the local operation unit 16 is pressed, the local control panel 15 sends a timer stop signal to the water discharge control panel 14. When the water discharge control panel 14 receives the timer stop signal, it stops the countdown.

In the above explanation, the water discharge stop command is given using the water discharge control panel 14, but the local operation unit 16 may be used instead of the water discharge control panel 14 to give the command to stop water discharge. In this case, the disaster prevention personnel presses the water discharge stop switch Sw11 of the local operation unit 16. In response to this command, the local control panel 15 sends a water discharge stop signal to the water discharge control panel 14. When the water discharge control panel 14 receives the water discharge stop signal, it closes the remote control valve 18 that was opened in step Sf16. As a result, water discharge from the fixed head 17 stops.

29 and 30 are sequence diagrams showing the manual water-discharge mode. Of the steps shown in these figures, steps Sf1 to Sf10 are common to the automatic water-discharge mode, so their description will be omitted.

After executing step Sf10, the sprinkler control panel 14 sends a signal to turn on the partition lights, etc. to the local control panel 15 (step Sg1). When the local control panel 15 receives the signal to turn on the partition lights, etc., it sets the partition light flag, fire light flag, and operable light flag of the protected section where the fire has occurred to on (step Sg2). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns on the partition light Lp11, fire light Lp10, and operable light Lp14 of the protected section where the fire has occurred.

After that, when disaster prevention personnel confirm the occurrence of a fire by checking the site, they instruct manual water discharge. Specifically, on the water discharge control panel 14, the water discharge section selection switch Sw3 of the protected section where the fire occurred is pressed, and then the water discharge start switch Sw4 is pressed. When the water discharge control panel 14 receives these operations (step Sg3), it opens the remote control valve 18 of the selected protected section and transmits a pump start signal to the pump control panel 20 (step Sg4). As a result, water is discharged from the fixed head 17 in the selected protected section. When the water discharge results in the water discharge and the water discharge control panel 14 receives an ON signal from a pressure switch (not shown), it turns on the water discharge light Lp9 (step Sg5). In addition, it transmits a water discharge light ON signal to the local control panel 15 (step Sg6). When the local control panel 15 receives the water discharge light ON signal, it sets the water discharge light flag to ON (step Sg7). As a result, when the local operation unit 16 is connected to this local control panel 15, the local operation unit 16 turns on the water discharge light Lp17.

The subsequent steps Sf20 to Sf28 are common to the automatic water discharge mode, and therefore their explanation will be omitted.
The above is a description of the manual water discharge mode.

In the above explanation, manual water discharge is commanded using the water spray control panel 14, but manual water discharge may be commanded using the local operation unit 16 instead of the water spray control panel 14. In this case, the disaster prevention personnel presses the water discharge section selection switch Sw9 of the protected section where the fire has occurred on the local operation unit 16, and then presses the water discharge start switch Sw10. In response to these operations, the local control panel 15 sends a water discharge start signal to the water spray control panel 14. Upon receiving the water discharge start signal, the water spray control panel 14 opens the remote control valve 18 of the selected protected section and sends a pump start signal to the pump control panel 20. As a result, water is discharged from the fixed head 17 in the selected protected section.

In the above explanation, manual water discharge is instructed after a fire is confirmed, but if disaster prevention personnel discover a fire before the fire is confirmed, manual water discharge may be instructed before the fire is confirmed. However, if such an instruction is given using the local operation unit 16, it is necessary to operate the key switch Sw7 to enable operation on the panel of the local operation unit 16 before issuing the instruction to manually discharge water.

4. Modifications of the Second Embodiment The above-described second embodiment may be modified as follows. Note that the following modifications may be combined with each other.

4-1. Modification 1
The local operation unit 16 includes a display/operation panel 163 as a display section and an operation section. However, instead of the display/operation panel 163, a touch screen may be included.

4-2. Modification 2
The local operation unit 16 may be communicatively connected to the local control panel 15 wirelessly rather than by wire.

1...fire extinguishing system, 2...automatic fire alarm equipment, 3...central operation panel, 4...nozzle unit, 5...local control panel, 6...local operation unit, 7...control panel, 10...fire extinguishing system, 11...smoke detector, 12...fire receiver, 13...flame detector, 14...sprinkler control panel, 15...local control panel, 16...local operation unit, 17...fixed head, 18...remote control valve, 19...pressurized water supply device, 20...pump control panel, 31... Control unit, 32...storage unit, 33...display unit, 34...operation unit, 35...communication unit, 41...water discharge unit, 42...sensing unit, 43...control unit, 44...signal relay unit, 51...control unit, 52...storage unit, 53...communication unit, 61...casing, 62...touch screen, 63...talk switch, 64...jack, 65...terminal, 66...control unit, 67...storage unit, 68...communication unit, 141...control unit, 142...storage unit, 143...display operation panel 144...communication unit, 151...control unit, 152...storage unit, 153...communication unit, 161...control unit, 162...storage unit, 163...display operation panel, 164...communication unit, 311...nozzle control unit, 312...nozzle information management unit, 313...test unit, 314...display control unit, 315...zone information management unit, 316...zone information synchronization unit, 421...infrared linear sensor, 422...flame detector, 511...nozzle information management unit, 512...Nozzle information output unit, 513...Nozzle control unit, 661...Nozzle information acquisition unit, 662...Display control unit, 663...Operation signal output unit, 1411...Water discharge control unit, 1412...Display control unit, 1413...Signal transmission unit, 1511...Display control information management unit, 1512...Display control information output unit, 1513...Signal transmission unit, 1611...Display control information acquisition unit, 1612...Display control unit, 1613...Operation signal output unit

Claims (2)

Fire extinguishing equipment;
an on-site control panel for instructing the discharge of water from the fire extinguishing device;
A portable local operation unit that is connectable to the local control panel so as to be able to communicate with the local control panel and has a display unit and an operation unit;
A central operation panel communicatively connected to the fire extinguishing device ;
Equipped with
The on-site control panel acquires status information of the fire extinguishing device,
The local operation unit acquires the status information from the local control panel and displays it on the display unit,
When a user operates the operation section to control the discharge of water from the fire extinguishing apparatus, the local operation unit outputs an operation signal representing the operation to the local control panel;
The on-site control panel instructs the fire extinguishing device to discharge water in response to the output operation signal,
The local operation unit is communicatively connectable to the central operation panel;
The central operation panel performs a test to confirm the communication state of the local operation unit, and displays the result of the test on the display unit of the central operation panel.
Fire extinguishing system. Fire extinguishing equipment;
an on-site control panel for instructing the discharge of water from the fire extinguishing device;
A portable local operation unit that is connectable to the local control panel so as to be able to communicate with the local control panel and has a display unit and an operation unit;
A central operation panel communicatively connected to the fire extinguishing device;
Equipped with
The on-site control panel acquires status information of the fire extinguishing device,
The local operation unit acquires the status information from the local control panel and displays it on the display unit,
When a user operates the operation section to control the discharge of water from the fire extinguishing apparatus, the local operation unit outputs an operation signal representing the operation to the local control panel;
The on-site control panel instructs the fire extinguishing device to discharge water in response to the output operation signal,
The central operation panel stores area information in which the fire extinguishing device is associated with the area in which the fire extinguishing device is set , and outputs the area information to the local operation unit for storage .
Fire extinguishing system.

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