Firefighting equipment

Abstract

This system ensures that the display device of the on-site control unit, which is normally hidden when stored in the control box, is reliably displayed in an emergency, enabling screen operation. [Solution] The on-site control console 30, which operates the water cannon system that discharges firefighting water, is housed in an operation box 46 equipped with an openable and closable door 50 and includes a liquid crystal display device 60 for operating the water cannon system by touch operation on the screen. Inside the door 50, there is a tamper switch 54 for detecting the opening and closing of the door and a photodetector 56 for detecting the display state of the liquid crystal display device 60. When the inspection unit of the on-site control console 30 receives a periodic inspection signal from the central control panel, it sets the liquid crystal display device 60 to display state, provided that the tamper switch 54 detects that the door 50 is closed. If the amount of light received detected by the photodetector 56 is above a predetermined value, it sends a normal display signal to the central control panel, and if the amount of light received is below a predetermined value, it sends a display abnormality signal to the central control panel.

Description

Technical Field

[0001] The present invention relates to fire extinguishing equipment that discharges fire extinguishing water from a water discharge part to extinguish and suppress a fire when a fire occurs in a protection area.

Background Art

[0002] Conventionally, for facilities (buildings) having a large-scale space such as a stadium or an exhibition hall, and facilities (buildings) having a high ceiling such as a store or a warehouse, there is a legal obligation to install sprinkler equipment (water discharge type fire extinguishing equipment) equipped with a water discharge type head or the like. Legally, water discharge type fire extinguishing equipment is classified into water discharge type fire extinguishing equipment using a movable head and water discharge type fire extinguishing equipment using a fixed head for the water discharge type head. Among these, as water discharge type fire extinguishing equipment using a movable head, equipment combining a scanning type fire detector and a water discharge gun device (movable head) is known as a representative example (Patent Document 1).

[0003] Water discharge type fire extinguishing equipment using a water discharge gun device includes a water discharge gun device that discharges fire extinguishing water to a protection area (fire extinguishing target area) in a facility, a local control unit that controls the operation of the water discharge gun device such as water discharge and horizontal scanning, and a local operation unit that performs an operation for instructing the operation. Further, in a disaster prevention center or the like away from the protection area, a central control unit that manages and monitors all local control units and a central operation unit that can selectively operate all water discharge guns are installed.

[0004] When a fire occurs in the protection area, the fire source position (fire occurrence location) is specified based on information from the scanning type fire detector, and a fire extinguishing operation of discharging fire extinguishing water from the corresponding water discharge part toward the fire source is started by automatic control by the central control unit, or manual operation at the local operation unit or the central operation unit.

[0005] Here, the operation of the water discharge part can be performed by the local operation unit and the central operation unit. However, when a fire occurs, since the fire extinguishing activity after confirming the fire on the local (protection area) side is fundamental, the local operation unit is used more frequently than the central operation unit during a fire.

[0006] Furthermore, the on-site control unit and the central control unit are not limited to use during fires; they can also display management information such as system failure information, and are therefore frequently used during inspections and adjustments during the installation of fire extinguishing equipment.

[0007] The on-site control unit, which is primarily used in emergencies, is housed in a control box with a door. When an attendant needs to use the on-site control unit, they must unlock the door with a key, making it difficult to operate easily.

[0008] Furthermore, the on-site control unit is equipped with switches for activation and recovery, as well as switches for operation rights and display tests, and indicator lights that show the status of the fire extinguishing equipment and compartments, such as fire signals, faults like broken wires, and countdowns until activation. Some units also have a communication port for connecting to the central control unit.

[0009] In recent years, the amount of information required for displaying and operating information, such as details of the malfunction, initial settings of the control panel, and operation guidance, has increased. As a result, there is a demand for on-site control panels equipped with display devices that enable screen operation by incorporating a capacitive touch panel on an LCD display panel. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Japanese Patent Publication No. 2006-223436 [Patent Document 2] Japanese Patent Application Publication No. 5-1948 [Overview of the project] [Problems that the invention aims to solve]

[0011] Incidentally, such fire extinguishing equipment is not used on a regular basis, but only in emergencies when a fire occurs. To ensure that it does not become inoperable in the event of an emergency, the Fire Service Act mandates inspections twice a year.

[0012] However, since the operation of fire extinguishing equipment during inspections is performed by personnel from the inspection company, it is often the case that building users and managers who will need to use the equipment in an emergency have never seen or touched it.

[0013] Furthermore, if a field control unit equipped with an operable display device is installed inside the control box, the display device is normally kept in a non-display state with the LCD panel backlight turned off. During the period until the next periodic inspection, the soundness of the display device's display function cannot be confirmed, which could hinder the operation of the water discharge unit using the display device in an emergency.

[0014] The present invention aims to provide a fire extinguishing system that reliably enables screen operation in an emergency by displaying the display device of the on-site control unit, which is housed in a control box and is normally in a non-display state. [Means for solving the problem]

[0015] (Fire extinguishing equipment) The present invention A water discharge unit that sprays firefighting water, A local control unit that controls the operation of the water discharge section, A local operation unit that instructs the local control unit to operate the water discharge unit, A fire extinguishing system in which multiple on-site facilities equipped with the following features are provided for a predetermined protected area, The on-site control unit is, A control box equipped with a door that can be opened and closed, A door opening / closing detector that detects the opening and closing of a door, A display device housed in a control box, which has a screen operation function that allows the water discharge section to be operated by touch operation on the screen, and which hides the screen when the door is closed and displays the screen when the door is open, A display detection unit is provided inside the control box to detect the screen display status of the display device when the door is closed, When the inspection signal is received from the central control unit at a predetermined cycle shorter than the regular inspection period, the display device is set to the display state on the condition that the door closing is detected by the door opening / closing detector. When the predetermined screen display conditions are satisfied based on the detection result of the display detection unit, a display normal signal is transmitted to the central control unit. When the predetermined screen display conditions are not satisfied, a display abnormal signal is transmitted to the central control unit. The inspection unit is characterized by comprising

[0016] (Display device operable by screen) The display device includes a liquid crystal panel and a touch panel. The display detection unit is a light receiving element or an imaging element. When the inspection unit receives the inspection signal, it lights up the backlight of the liquid crystal panel. When the predetermined screen display conditions are satisfied based on the detection result of the light receiving element or the imaging element, a display normal signal is transmitted. When the predetermined screen display conditions are not satisfied, a display abnormal signal is transmitted.

[0017] (Display determination based on light reception amount) The light receiving element or the imaging element detects the light reception amount due to the lighting of the backlight of the liquid crystal panel. As the predetermined screen display conditions, the inspection unit determines that the display is normal when the light reception amount detected by the light receiving element or the imaging element is equal to or exceeds a predetermined value, and determines that the display is abnormal when the light reception amount is less than or below the predetermined value.

[0018] (Display determination based on change in light reception amount) The light receiving element or the imaging element detects the light reception amount due to the lighting of the backlight of the liquid crystal panel. As the predetermined screen display conditions, the inspection unit calculates the change between the previous light reception amount and the current light reception amount detected by the light receiving element or the imaging element. When the change in the light reception amount is within a predetermined range, it determines that the display is normal. When the change in the light reception amount is outside the predetermined range, it determines that the display is abnormal.

[0019] (Acoustic inspection) The local operation unit further includes a communication unit for communicating with the central control unit. An acoustic alarm unit that sounds an alarm sound using a call unit, An acoustic detection unit provided in an operation box that detects the alarm sound caused by the sounding of the acoustic alarm unit, and includes, When the inspection unit receives an inspection signal, it sounds the acoustic alarm unit on the condition that the door is detected to be closed by the door opening / closing detector, and transmits an acoustic normal signal when a predetermined acoustic condition is satisfied by the acoustic detection unit, and transmits an acoustic abnormal signal when the predetermined acoustic condition is not satisfied.

[0020] (Audible alarm determination by volume) The acoustic detector is a microphone, and the microphone detects the volume caused by the sounding of the acoustic alarm unit, When the inspection unit determines that the volume detected by the microphone is greater than or equal to a predetermined value or exceeds the predetermined value as a predetermined acoustic condition, it determines that the sound is normal, and when the volume is less than the predetermined value or falls below the set value, it determines that the sound is abnormal.

[0021] (Water discharge type fire extinguishing equipment) The water discharge unit includes a movable head capable of changing the water discharge range and a fixed head with a fixed water discharge range.

Effect of the invention

[0022] (Effect of fire extinguishing equipment) The present invention relates to a fire extinguishing system in which multiple field equipment units are provided in a predetermined protected area, each unit comprising a water discharge unit for discharging fire extinguishing water, a field control unit for controlling the operation of the water discharge unit, and a field operation unit for instructing the field control unit to operate the water discharge unit. The field operation unit comprises an operation box with an openable and closable door, a door open / close detector for detecting the opening and closing of the door, a display device housed in the operation box and having a screen operation function that allows the water discharge unit to be operated by touch operation on the screen, with the screen being hidden when the door is closed and the screen being displayed when the door is open, a display detection unit provided in the operation box for detecting the screen display state of the display device when the door is closed, and when an inspection signal is received from the central control unit at a predetermined interval shorter than the periodic inspection period, the display device is set to display state on the condition that the door is closed by the door open / close detector, and a predetermined screen display condition is met based on the detection result of the display detection unit. The system includes an inspection unit that sends a normal display signal to the central control unit when certain conditions are met, and a display abnormality signal to the central control unit when certain screen display conditions are not met. Therefore, even if the display device is normally housed in an operation box and is in a non-display state, an inspection operation is performed to bring the display device into a display state by sending an inspection signal from the central control unit at a predetermined interval, for example, once a day. The inspection result of whether the display is normal or abnormal can be confirmed at the monitoring center where the central control unit is located, and if the inspection result is an abnormal display, prompt repair measures can be taken to maintain the soundness of the display function of the display device at all times. In the event of a fire, the door of the operation box will open, reliably bringing the display device into a display state and enabling operation of the water discharge unit via screen operation, thereby improving the reliability of the on-site operation unit.

[0023] (Effects of a display device with screen control) Furthermore, the display device includes a liquid crystal panel and a touch panel, the display detection unit is a light-receiving element or image sensor, and the inspection unit, upon receiving an inspection signal, turns on the backlight of the liquid crystal panel, transmits a display normal signal when predetermined screen display conditions are met based on the detection result of the light-receiving element or image sensor, and transmits a display abnormal signal when the predetermined screen display conditions are not met. Thus, the display device is normally in a non-display state by turning off the backlight of the liquid crystal panel, and becomes a display state by turning on the backlight during inspection, enabling the display state or non-display state of the display device during inspection to be reliably detected by the light-receiving element or image sensor and notifying the inspection results.

[0024] (Effect of display determination based on the amount of light received) Furthermore, the light-receiving element or image sensor detects the amount of light received due to the backlight of the liquid crystal panel, and the inspection unit determines that the display is normal if the amount of light received detected by the light-receiving element or image sensor is equal to or exceeds a predetermined value, and determines that the display is abnormal if the amount of light received is less than or below a predetermined value. Therefore, during inspection, if the brightness is above a predetermined level based on the amount of light received due to the backlight of the liquid crystal panel, it is determined to be normal, while if it is below the predetermined level or no brightness is detected, it is determined to be abnormal and notified, thereby enabling the display abnormality of the display device to be quickly and reliably determined and appropriate action to be taken.

[0025] (Effect of display determination based on changes in light reception) Furthermore, the light-receiving element or image sensor detects the amount of light received due to the backlight of the liquid crystal panel, and the inspection unit determines the change between the previous amount of light received and the current amount of light received as predetermined screen display conditions. If the change in the amount of light received is within a predetermined range, it is determined that the display is normal, and if the change in the amount of light received falls outside the predetermined range, it is determined that there is a display abnormality. By determining the change between the previous amount of light received and the current amount of light received, abnormalities due to aging deterioration, such as a decrease in screen brightness, can be detected in addition to abnormalities where the display device does not turn off, making it possible to quickly and reliably detect and appropriately address the deterioration of the display function of the display device.

[0026] (Effects of acoustic inspection) Furthermore, the local control unit includes a communication unit for communicating with the central control unit, an audible alarm unit that uses the communication unit to sound an alarm, and an acoustic detection unit located inside the control box that detects the alarm sound caused by the audible alarm unit. The inspection unit, upon receiving an inspection signal, sounds the audible alarm unit based on the detection of door closure by the door opening / closing detector. The acoustic detection unit transmits an acoustic normal signal when predetermined acoustic conditions are met and an acoustic abnormal signal when the predetermined acoustic conditions are not met. Therefore, even though the audible alarm unit is normally housed in the control box, the central control unit sends an inspection signal at a predetermined interval, for example, once a day, which triggers an inspection operation to sound the audible alarm unit. The inspection result, whether it is normal or abnormal, can be confirmed at the monitoring center where the central control unit is located. If the inspection result is abnormal, prompt repair measures can be taken to maintain the soundness of the audible alarm unit's function, thereby improving the reliability of the local control unit.

[0027] (Effect of sound detection based on volume) Furthermore, the acoustic detector is a microphone, which detects the volume of sound produced by the sound alarm unit. The inspection unit determines that the sound is normal if the volume detected by the microphone is above or exceeds a predetermined value, and determines that the sound is abnormal if the volume is below or below the predetermined value. Therefore, during inspection, if the sound of the sound alarm unit is above the predetermined volume, it is determined to be normal, while if it is below the predetermined volume or the sound stops, it is determined to be abnormal and a notification is sent, enabling the system to quickly and reliably determine abnormalities in the sound alarm unit and take appropriate action. [Brief explanation of the drawing]

[0028] [Figure 1] This is an explanatory diagram showing the overall configuration of a movable water-spraying type fire extinguishing system. [Figure 2] This is an explanatory diagram showing the functional configuration of a movable water-spraying type fire extinguishing system. [Figure 3] This is an explanatory diagram showing an embodiment of a control box that houses a field control console. [Figure 4] This is an explanatory diagram showing the operation display section of a local control console, including the display device. [Figure 5] This is an explanatory diagram showing the functional configuration of the on-site control console. [Figure 6] This is an explanatory diagram showing the inspection procedures for the on-site control panel of a fire extinguishing system using a time chart.

[0029] [Basic Concepts of the Embodiment] First, the basic concept of the embodiment will be explained. The embodiment generally relates to a fire extinguishing system that extinguishes and suppresses a fire by spraying fire-extinguishing water from a water discharge unit onto a predetermined protected area.

[0030] Here, "fire extinguishing equipment" in this embodiment refers to water-discharge type fire extinguishing equipment installed in facilities (buildings) with large spaces such as sports fields and exhibition halls, or facilities with high ceilings such as shops and warehouses, and includes the concept of a "fire extinguishing system."

[0031] Furthermore, the "protected area" is the area in the target facility, etc., where fire is suppressed and protected by fire extinguishing equipment, that is, the area within the water discharge range of the water discharge unit, and includes concepts such as protected compartment, fire extinguishing target area, and fire extinguishing target compartment.

[0032] In fire extinguishing systems, multiple on-site units equipped with water discharge sections, on-site control sections, and on-site operation sections are provided for each protected area. Furthermore, as long as all on-site units can protect the entire protected area, the area protected by each on-site unit may be only a portion of the protected area. For example, the protected area may be divided into multiple sections, with one on-site unit provided for each section, and a portion of the area protected by each on-site unit may overlap with the area protected by other on-site units. Note that "on-site units" refer to the equipment on the ground that is provided for the protected area in a fire extinguishing system. Equipment provided at a disaster prevention center, etc., that monitors and manages these on-site units will be called "monitoring equipment." In addition, while on-site units are equipped with water discharge sections, on-site control sections, and on-site operation sections, these are shown as functional components of the on-site unit, and they do not necessarily have to be separate. For example, the water discharge section and on-site control section may be installed together at the site.

[0033] The "water discharge unit" is a system for discharging firefighting water and is a concept that includes a "movable head" capable of changing the water discharge range and a "fixed head" with a fixed water discharge range. Furthermore, the "movable head" is a concept that includes a "water cannon device" that horizontally scans a water cannon fixed at a predetermined elevation angle and can switch the water discharge distance to at least predetermined short, medium, or long distances.

[0034] The "on-site control unit" controls the operation of the water discharge unit, while the "on-site operation unit" instructs the on-site control unit to operate the water discharge unit. Examples of operations performed by the on-site operation unit include, if the water discharge unit is a water cannon device (movable head), horizontal scanning to direct the water cannon towards the fire source, selecting the water discharge distance from a predetermined short, medium, or long distance depending on the distance to the fire source, and activating the water discharge to release firefighting water from the water discharge unit.

[0035] Furthermore, the fire extinguishing system of the embodiment is characterized by comprising an operation box, a door opening / closing detector, a display device, a display detection unit, and an inspection unit as the on-site operation unit.

[0036] Here, the "control box" refers to a storage box with a retractable door located near the water discharge section. Normally, the door is locked, but in emergencies such as a fire, an attendant can unlock it with a key and open the door, allowing them to operate the on-site control unit stored inside the control box.

[0037] Furthermore, a "door opening / closing detector" is a detector that detects the opening and closing of the door of the control box. Its structure and function are arbitrary, but for example, a detection switch that turns on when the door is closed and turns off when the door is opened may be used.

[0038] Furthermore, the "display device" is housed in the control box and has a screen operation function that allows the water discharge unit to be operated by touch operation on the screen. The screen is turned off when the door is closed and turned on when the door is open. The configuration and functions of the "display device" are arbitrary, but for example, it is a liquid crystal display device equipped with a liquid crystal panel and a touch panel. Normally, the backlight of the liquid crystal panel is turned off and the screen is turned off, and in the event of an emergency such as a fire, when the door is opened, the backlight of the liquid crystal panel is turned on and the screen can be operated. In addition to liquid crystal displays, organic EL displays, LED displays, etc. may also be used.

[0039] Furthermore, the "display detection unit" is installed inside the control box and detects the screen display state of the display device when the door is closed. Its configuration and function are arbitrary, but examples include a photodetector or an image sensor.

[0040] Furthermore, the "inspection unit" receives an inspection signal from the central control unit at a predetermined interval shorter than the regular inspection period, for example, once a day. Based on the detection result of the display detection unit, it sets the display device to display when the door is closed by the door opening / closing detector, and sends a display normal signal to the central control unit if the predetermined screen display conditions are met based on the detection result of the display detection unit. If the predetermined screen display conditions are not met, it sends a display abnormal signal to the central control unit.

[0041] Therefore, in the fire extinguishing system of this embodiment, even if the display device is normally hidden and hidden in the control box of the remote control unit, an inspection operation is performed to turn the display device to display when an inspection signal is sent from the central control unit at a predetermined interval, for example, once a day. The inspection result of whether the display is normal or abnormal can be confirmed at the monitoring center where the central control unit is installed, and if the inspection result is an abnormal display, prompt repair measures can be taken to maintain the soundness of the display function of the display device at all times. In the event of a fire, the display device can be reliably turned to display by opening the door of the control box, enabling operation of the water discharge unit via screen operation, thereby improving the reliability of the on-site control unit.

[0042] Furthermore, the "inspection unit" illuminates the backlight of the liquid crystal panel when it receives an inspection signal, transmits a display normal signal if predetermined screen display conditions are met based on the detection results of the light-receiving element or image sensor, and transmits a display abnormal signal if the predetermined screen display conditions are not met. Normally, the display device is in a non-display state by turning off the backlight of the liquid crystal panel, but during inspection, it becomes a display state by turning on the backlight. The inspection unit can notify the inspection results by reliably detecting the display state or non-display state of the display device using the light-receiving element or image sensor.

[0043] Furthermore, the "inspection unit" determines that the display is normal if the amount of light received by the light-receiving element or image sensor is equal to or exceeds a predetermined value, and determines that there is a display abnormality if the amount of light received is less than or below a predetermined value. During inspection, if the amount of light received due to the illumination of the LCD panel's backlight is above a predetermined brightness, it is determined to be normal. On the other hand, if the brightness is below the predetermined brightness or no brightness is detected, it is determined to be abnormal and notified, thereby enabling the display abnormality of the display device to be quickly and reliably determined and appropriate action to be taken.

[0044] Furthermore, the "inspection unit" determines the change between the previous light reception amount and the current light reception amount detected by the light receiving element or image sensor as predetermined screen display conditions. If the change in light reception amount is within a predetermined range, it determines that the display is normal, and if the change in light reception amount falls outside the predetermined range, it determines that there is a display abnormality. By determining the change between the previous light reception amount and the current light reception amount, it is possible to detect not only abnormalities where the display device does not turn off, but also abnormalities due to aging deterioration such as a decrease in screen brightness. This makes it possible to quickly and reliably detect and appropriately address the deterioration of the display function of the display device.

[0045] Furthermore, the "local operation unit" includes a communication unit for communicating with the central control unit, an audible alarm unit that uses the communication unit to sound an alarm, and an acoustic detection unit located inside the control box that detects the alarm sound caused by the audible alarm unit. In this case, when the "inspection unit" receives an inspection signal, it sounds the audible alarm unit on the condition that the door is closed by the door opening / closing detector, and the acoustic detection unit transmits an acoustic normal signal when predetermined acoustic conditions are met, and transmits an acoustic abnormal signal when predetermined acoustic conditions are not met.

[0046] Therefore, even if the audible alarm unit is normally housed in the control box, an inspection operation is performed by sending an inspection signal from the central control unit at a predetermined interval, for example, once a day, which causes the audible alarm unit to sound. The inspection result, whether it is normal or abnormal, can be confirmed at the monitoring center located in the central control unit, and if the inspection result is abnormal, prompt repair measures can be taken to maintain the sounding function of the audible alarm unit at all times, thereby improving the reliability of the on-site control unit.

[0047] Furthermore, the "acoustic detector" is a microphone that detects the volume of sound produced by the sound alarm unit. The "inspection unit" determines that the sound is normal if the volume detected by the microphone is above or exceeds a predetermined value, and determines that there is an acoustic abnormality if the volume is below or below the predetermined value. During inspection, if the sound of the sound alarm unit is above the predetermined volume, it is determined to be normal, while if it is below the predetermined volume or the sound stops, it is determined to be abnormal and notified, thereby enabling quick and reliable detection of abnormalities in the sound alarm unit and allowing for appropriate countermeasures.

[0048] The following describes a specific embodiment. In the specific embodiment shown below, the fire extinguishing equipment is a "movable water-discharge type fire extinguishing equipment," the "water discharge unit" is a "water cannon device," the "on-site operation unit" is an "on-site operation console," the "on-site control unit" is a "water cannon control panel," the "central operation unit" is a "central operation console," the "central control unit" is a "central control panel," the "door opening / closing detector" is a "tamper switch," the "display device" is a "liquid crystal display device," and the "light-receiving element" is a "photodetector."

[0049] [Specific details of the embodiment] We will now explain the fire extinguishing equipment in more detail. The information will be divided as follows: a. Mobile water-spraying fire extinguishing equipment a1. Overall configuration of the equipment a2. Water discharge operation of fire extinguishing equipment b. On-site control console b1. Structure of the control box housing the on-site control console b2. Operation display unit of the on-site control console b3. Functional configuration of the on-site control console b4. Inspection of the liquid crystal display device b5. Inspection of the acoustic alarm unit c. Inspection and operation of the on-site control console d. Modified forms of the present invention

[0050] [a. Mobile water-spraying fire extinguishing equipment] This section describes a movable water-discharge type fire extinguishing system equipped with a movable head. This description will refer to Figure 1, which shows the overall configuration of the movable water-discharge type fire extinguishing system, and Figure 2, which shows the functional configuration of the movable water-discharge type fire extinguishing system.

[0051] (a1. Overall configuration of the equipment) First, let's explain the overall configuration of the fire extinguishing system. As shown in Figure 1, in this embodiment, the movable water-discharge type fire extinguishing system designates a predetermined area of ​​a large-space facility such as an indoor sports arena, a dome-shaped sports arena, or an exhibition hall as the protected area (area to be extinguished) 11. On the protected area 11 side, as on-site equipment, for example, two water cannon devices 12(12-1), 12(12-2), water cannon control panels 28(28-1), 28(28-2), and on-site operation consoles 30(30-1), 30(30-2) are installed. The water cannon devices 12(12-1), 12(12-2) and on-site operation consoles 30(30-1), 30(30-2) are connected to the water cannon control panels 28(28-1), 28(28-2). In addition, a scanning fire detector 10 is installed on the protected area 11 side. Here, water cannon devices 12(12-1) and 12(12-2) are examples of medium-sized water cannon devices equipped with a medium-throw nozzle that has a maximum water discharge distance of approximately 70m.

[0052] Furthermore, the water cannon control panels 28(28-1), 28(28-2) and the scanning fire detector 10 are connected to the central control panel 15 of the monitoring equipment installed in the disaster prevention center 14. A central control console 16 is provided for the central control panel 15, and as shown in Figure 2, the central control console 16 is equipped with a monitor 43, a printer 44, and a communication unit 45, etc. The communication unit 45 enables communication based on call notifications with the communication units 78 provided in the on-site control consoles 30(30-1), 30(30-2).

[0053] Furthermore, a photoelectric separate-type detector 32 is installed on the side of the protected area 11. The photoelectric separate-type detector 32 has a light-emitting unit 3210 and a light-receiving unit 3212 positioned opposite each other at a predetermined monitoring distance, and detects smoke based on the dimming of light caused by the smoke.

[0054] The photoelectric separate-type detector 32 is connected via a detector line to the fire alarm receiving panel 34 installed in the disaster prevention center 14, and the fire alarm receiving panel 34 is connected to the central control panel 15 via a relay signal line. The fire alarm receiving panel 34 also monitors for fires in the protected area 11 using the photoelectric separate-type detector 32, and outputs a relay signal to the central control panel 15 when it receives a fire detection signal from a detector that has detected a fire.

[0055] Furthermore, the fire pump room is equipped with fire pump equipment 18, which includes a pump 20, a water source tank 22, and a pump control panel 24. The pump control panel 24 is connected to the central control panel 15. The pump 20 is controlled by the pump control panel 24, with its suction side connected to the water source tank 22 and its discharge side connected to a fire extinguishing pipe 26. The fire extinguishing pipe 26 is connected to the water cannon device 12 via a simultaneous release valve and an inspection valve, which function as valves to control the water discharge pressure.

[0056] Furthermore, in this embodiment, dedicated ITV cameras 36(36-1) and 36(36-2) for monitoring the firefighting operation by the water cannon system 12, and monitoring ITV cameras 38(38-1) and 38(38-2) for monitoring the protected area 11 are installed. The ITV cameras 36(36-1) and 36(36-2) can be remotely controlled from the disaster prevention center 14 to freely control their direction and zoom, allowing the disaster prevention center 14 to monitor the water discharge operation by the water cannon system 12 against fires occurring in the protected area 11.

[0057] The surveillance ITV cameras 38(38-1) and 38(38-2) are fixedly installed in the protected area 11, allowing the situation in the protected area 11 to be monitored on a fixed screen. The ITV cameras 36(36-1) and 36(36-2) and the surveillance ITV cameras 38(38-1) and 38(38-2) are connected to the ITV control device 40 on the disaster prevention center 14 side, allowing the necessary images to be displayed on the ITV monitor 42 by selecting any camera. Furthermore, the ITV control device 40 is connected to the central control panel 15 and, upon receiving directional data output from the fire source position coordinates calculated by the central control panel 1, can automatically control the ITV cameras 36(36-1) and 36(36-2) to point towards the fire source. Furthermore, if there is no need to distinguish between the water cannon devices 12(12-1) and 12(12-2) and the on-site control consoles 30(30-1) and 30(30-2), they may be referred to simply as water cannon device 12 and on-site control console 30.

[0058] (a2. Water discharge operation of fire extinguishing equipment) Next, the water discharge operation of the fire extinguishing equipment will be explained. When the central control panel 15 receives a fire detection signal from the scanning fire detector 10 while the automatic mode is set, it displays the fire location (fire source location) on the central control console 16 and outputs an alarm. At the same time, it transmits water discharge setting information, including the horizontal rotation angle and water discharge pressure (target value) corresponding to the fire source location, to the water cannon control panel 28 (28-1) connected to the water cannon device 12 (12-1), for example. The central control panel 15 also outputs a pump start signal to the pump control panel 24 of the fire extinguishing pump equipment 18 shown in Figure 1, to start the pump 20 and supply pressurized fire extinguishing water to the fire extinguishing pipe 26.

[0059] Here, the water discharge distance (range) of the water cannon device 12(12-1) is set in three stages, for example, long, medium, and short, and a water discharge pressure (target value) corresponding to each distance stage is set. In this embodiment, the water cannon device 12(12-1) allows for two pressure settings for the water discharge distance, long and medium, and for the short distance, a deflector is placed at the discharge port of the water nozzle while maintaining the water discharge pressure of the medium distance to form a short-range water discharge pattern. The water cannon device 12(12-2) is similar in this respect.

[0060] The water cannon control panel 28(28-1) rotates the water cannon device 12(12-1) horizontally to the horizontal rotation angle specified in the water discharge setting information received from the central control panel 15, directing the water nozzle towards the fire source. After a predetermined countdown by the timer prepares for water discharge, the water cannon device 12(12-1) begins to discharge water. The simultaneous release valve is pressure-controlled to achieve the water discharge pressure (target value) specified in the water discharge setting information received from the central control panel 15, thereby adjusting the water discharge pressure to a long-range or medium-range distance from the fire source. In the case of short distances, the water discharge pressure is adjusted to a medium-range distance, and a deflector is placed at the water outlet of the water nozzle to form a short-range water discharge pattern and discharge water.

[0061] Furthermore, water can be discharged from the water cannon device 12(12-1) by manual operation from the field control console 30(30-1) connected to the water cannon control panel 28(28-1). In this case, the field control console 30(30-1) performs an operation to acquire control rights from the central control console 16. Upon acquiring control rights, the central control panel 15 is deactivated from automatic mode and switched to manual mode, enabling manual operation of the water cannon device 12(12-1) by the field control console 30(30-1).

[0062] To discharge water manually, the water cannon device 12(12-1) is rotated horizontally at the on-site control panel 30(30-1) to direct the nozzle towards the fire source, the discharge distance is selected from, for example, long, medium, or short, and the water discharge is initiated. As a result, the water cannon control panel 28(28-1) controls the pressure of the simultaneous release valve to achieve the water discharge pressure (target value) set for the selected long or medium distance, and for short distances, the pressure is adjusted to the water discharge pressure corresponding to the medium distance, and a deflector is placed at the water outlet of the nozzle to form a short-range discharge pattern, and the fire extinguishing water is discharged from the water cannon device 12(12-1) towards the fire source. In addition, in manual mode, it is also possible to acquire control rights at the central control panel 16 and manually select either the water cannon device 12(12-1) or 12(12-2) to discharge water by operating the central control panel 16.

[0063] [b. On-site control console] Next, the on-site control console will be described. In this description, refer to Figure 3, which shows an embodiment of the control box housing the on-site control console. Figure 3(A) shows a top view, Figure 3(B) shows a front view, and Figure 3(C) shows a right side view.

[0064] In the explanation of Figure 3, the X, Y, and Z directions are mutually orthogonal. Specifically, when viewing the control box from the front, the left-right direction is the X direction, the up-down direction is the Y direction, and the front-back direction is the Z direction. Furthermore, in the X direction, the +X side is the right side and the -X side is the left side; in the Y direction, the +Y side is the top and the -Y side is the bottom; and in the Z direction, the +Z side is the front and the -Z side is the rear. This is the same for the X, Y, and Z directions in Figure 4, which shows the on-site control console housed in the control box.

[0065] (b1. Structure of the control box housing the on-site control console) The control box housing the on-site control console will now be described. As shown in Figure 3, a control box 46 is installed at a designated location within the facility surrounding the protective area 11 from which the water cannon system 12 can be seen, and the on-site control console 30 is housed inside the control box 46.

[0066] The control box 46 has a box-shaped housing 48 with an open front, and a door 50 is provided on the front opening frame 51, which opens and closes, for example, by a hinge 53 at the right end. The housing 48, door 50, and frame 51 are made by sheet metal processing or the like. Inside the housing 48, the field control console 30 is mounted and fixed by mounting members 55.

[0067] (b2. Operation display unit on the on-site control console) Next, the operation display unit of the on-site control console will be described. For this description, please refer to Figure 4, which shows the operation display unit of the on-site control console, including the display device.

[0068] As shown in Figure 4, the field control console 30 housed in the control box 46 has a liquid crystal display device 60 positioned on the upper right side of its front. The liquid crystal display device 60 has a structure in which a capacitive transparent touch panel is positioned in front of the liquid crystal panel, and displays images of the display buttons and operation buttons necessary for operating the water cannon device 12, enabling operation and control of the corresponding water cannon device 12 by touching the operation buttons.

[0069] The liquid crystal display device 60 is normally in a non-display state when the door 50 of the control box 46 is closed, by turning off the backlight of the liquid crystal panel. However, when the door 50 is opened and the screen is touched, the backlight of the liquid crystal panel turns on and the display becomes active. Also, when operations on the on-site control console 30 (30-1) are finished, operating the erase button located on the screen turns off the backlight of the liquid crystal panel and the display becomes non-display.

[0070] The display buttons and operation buttons on the liquid crystal display device 60 are optional, but in this embodiment, the display buttons and operation buttons are arranged separately for the operation display unit 62, the operation rights setting unit 64, the water discharge mode setting unit 65, the range selection unit 66, and the nozzle rotation operation unit 68.

[0071] The operation display unit 62 shows "fire light" and "water discharge light" from left to right, followed by "power light," "water discharge preparation light," and "pump operation light."

[0072] The control rights setting unit 64 is equipped with a control rights acquisition button 6410. When the control rights acquisition button 6410 is operated, control rights for the water cannon device 12 are set for the on-site control console 30. The control rights setting unit 64 is also equipped with a "central light" and "other on-site lights" that indicate the location where control rights are set. When the "central light" is lit, the central control console 16 has control rights, and when the "other on-site lights" are lit, another on-site control console has control rights. When control rights are acquired by operating the control rights acquisition button 6410, the "central light" and "other on-site lights" turn off, and the control rights acquisition button 6410 changes to a predetermined display color.

[0073] The water discharge mode setting unit 65 is equipped with an "automatic mode setting button" and a "manual mode setting button." After acquiring control rights by operating the control rights acquisition button 6410, the user can operate either the "automatic mode setting button" or the "manual mode setting button" to operate the water cannon device 12 according to its automatic or manual mode.

[0074] The range selection unit 66 is equipped with a downward-pointing triangle mark. By manipulating the triangle mark, one of the options "long," "medium," or "short" will be displayed, for example, "long," allowing the user to select the desired range.

[0075] The nozzle rotation control unit 68 displays a "nozzle rotation meter" at the top center of the water discharge control screen, indicating the rotation direction as "nozzle rotation." The "nozzle rotation meter" has an arc-shaped scale between the "left limit" and the "right limit," with the water discharge nozzle displayed as the pointer. The pointer of the water discharge nozzle also displays a number, for example "990," which indicates the current number of steps when the water discharge nozzle is rotated horizontally by the stepping motor from the left limit to the right limit.

[0076] Below the "Nozzle Swivel Meter," there are swivel control buttons labeled "Left High Speed," "Left Low Speed," "Right Low Speed," and "Right High Speed" to set the swivel direction and speed. While any of the swivel control buttons is pressed, the water spray nozzle will swivel horizontally in the selected direction and at the selected speed, and will stop at that position when the button is released.

[0077] Below the liquid crystal display device 60, a water discharge control unit 70 is positioned as an operation panel composed of physical electrical components. The water discharge control unit 70 includes a key switch 72 and an emergency stop switch 74 as important operating components for water discharge operation, as well as a pump test button 75 and a call button 76.

[0078] The key switch 72 has a "normal position" on the center (left side) and an "activate" position on the right side, and the water discharge is activated by inserting the operation key into the keyhole and turning it. The emergency stop switch 74 is a push-button switch that uses an illuminated switch that lights up red, and by pressing it during the countdown of the timer indicating that water discharge preparation is underway due to the operation of the key switch 72, the water discharge preparation operation is stopped and the water discharge is canceled. The "water discharge light" on the operation display unit 62 lights up during water discharge, and the "water discharge preparation light" lights up or flashes while the timer is counting down for 30 seconds after the water discharge is activated by the key switch 72.

[0079] A telephone unit 78 is provided on the left side of the local control console 30. The telephone unit 78 is a removable handset, and when the handset is removed and the call button 76 is operated, a call is made to the telephone unit 45 located on the central control console 16 shown in Figure 2, enabling communication between the local control console 30 and the central control console 16.

[0080] Furthermore, an acoustic hole 80 is formed on the upper left side of the communication unit 78, and a speaker that functions as an acoustic alarm unit is placed inside, and a ringtone is output when a call is made on the communication unit 45 located on the central control console 16. In addition to the calltone, the speaker also outputs alarm sounds, alarm messages, and, if necessary, voice guidance for operation in the event of an abnormality or malfunction during water discharge operation.

[0081] (b3. Functional configuration of the on-site control console) Next, we will explain the functional configuration of the on-site control console. In this explanation, please refer to Figure 5, which shows the functional configuration of the on-site control console, in addition to the control box containing the on-site control console shown in Figure 3.

[0082] As shown in Figure 5, the field control console 30 is equipped with a field control unit 82. The field control unit 82 is a computer circuit equipped with a CPU, memory, and various input / output ports, and the functions of the field control unit 82 are realized by the execution of a program by the CPU.

[0083] In this embodiment, the field control unit 82 is equipped with the function of an inspection unit 84. When the inspection unit 84 receives an inspection instruction signal transmitted at a predetermined interval, for example, once a day, from the inspection instruction unit 90 located in the central control panel 15 shown in Figure 2 via the water cannon control panel 28, the inspection unit 84 performs an inspection operation of the acoustic alarm unit, which consists of a liquid crystal display device 60 and the speaker 7810 of the communication unit 78. The liquid crystal display device 60 consists of a liquid crystal panel 6010 and a capacitive transparent touch panel 6012.

[0084] (b4. Inspection of the liquid crystal display device) Next, the inspection of the liquid crystal display device will be described. To inspect the liquid crystal display device 60, the on-site control console 30 is equipped with a tamper switch 54 and a photodetector (PD) 56. As shown in Figure 3, the tamper switch 54 is, for example, mounted and fixed to the housing 48 on the back side of the upper right corner of the door 50. It is turned on when the switch knob is pressed in when the door 50 is in the closed position, and when the door 50 is opened, the pressure on the switch knob is released and it switches to the off position.

[0085] Here, the control box 46 normally has its door 50 locked in the closed position by the door locking device 52. When operating the on-site control console 30, the door locking device 52 is unlocked using a door key to open the door 50. The door key used to lock and unlock the door locking device 52 is also used to operate the key switch 72 of the water discharge control unit 70 shown in Figure 4.

[0086] The photodetector 56 functions as a light-receiving element for detecting the amount of light received in the display state during inspection of the liquid crystal display device 60, and outputs a light-receiving signal corresponding to the light-receiving level of the liquid crystal display device 60. As shown in Figure 3, the photodetector 56 is located inside the door 50 located on the front of the liquid crystal display device 60 shown in Figure 4.

[0087] Alternatively, instead of the photodetector 56, a small camera unit equipped with an image sensor that functions as an image sensor, such as those used in mobile terminals, may be placed. If the camera unit is placed on the back of the door 50, even if it is difficult to form an image of the screen due to the short distance to the screen of the liquid crystal display device 60, it is possible to detect the brightness of the screen, i.e., the amount of light received, and output a light-receiving signal with a light-receiving level corresponding to the brightness of the liquid crystal display device 60, similar to the photodetector 56.

[0088] When the door 50 of the control box 46 is closed, the liquid crystal display device 60 is in a non-display state by turning off the backlight provided in the liquid crystal panel 6010. However, the screen signal from the local control unit 82 is always supplied to the liquid crystal display device 60, and no image is displayed due to the backlight being off.

[0089] The inspection unit 84 of the local control unit 82, upon receiving an inspection signal from the central control panel 15 at a predetermined interval shorter than the twice-yearly periodic inspection interval, for example, once a day, and upon detecting the closing of the door 50 by turning on the tamper switch 54, turns on the backlight of the liquid crystal panel 6010 to display the liquid crystal display device 60 for a predetermined period of time. Based on the received light signal corresponding to the brightness of the display screen output from the photodetector 56, it sends a display normal signal to the central control panel 15 if the predetermined screen display conditions are met, and sends a display abnormal signal to the central control panel 15 to notify it if the predetermined screen display conditions are not met.

[0090] The predetermined screen display conditions determined by the inspection unit 84 are arbitrary, but for example, if the received light signal from the photodetector 56 is equal to or greater than a predetermined value or exceeds a predetermined value, the display is determined to be normal, and if the received light signal is less than or less than a predetermined value, the display is determined to be abnormal.

[0091] Furthermore, as another example of the predetermined screen display conditions determined by the inspection unit 84, the change between the previously received light signal and the current received light signal detected by the photodetector 56 may be determined, and if the change in the received light signal is within a predetermined range, the display may be determined to be normal, and if the change in the received light signal is outside the predetermined range, the display may be determined to be abnormal. In this case, in addition to abnormalities such as the liquid crystal display device 60 not displaying, abnormalities due to aging deterioration such as a decrease in screen brightness can also be determined.

[0092] (b5. Inspection of the audible alarm unit) Furthermore, a microphone 58 is provided on the on-site control console 30 for inspecting the audible alarm unit, which is powered by a speaker 7810 located in the communication unit 78. The microphone 58 is positioned inside the door 50, which is located in front of the acoustic hole 80 shown in Figure 4.

[0093] The inspection unit 84 of the local control unit 82, upon receiving an inspection signal from the central control panel 15 at a predetermined interval, for example, once a day, and upon detecting the closing of the door 50 by turning on the tamper switch 54, activates the speaker 7810 to output a predetermined alarm sound for a predetermined time. Based on the volume signal output from the microphone 58, the inspection unit 84 determines that the sound is normal if the volume signal detected by the microphone 58 is equal to or exceeds a predetermined value, and sends a normal sound signal to the central control panel 15. If the volume signal is less than or below a predetermined value, it determines that there is an abnormal sound and sends an abnormal sound signal to the central control panel 15 to provide notification.

[0094] [c. Inspection and operation of the on-site control console] Next, we will explain the inspection procedure for the on-site control panel. For this explanation, please refer to Figure 6, which shows the inspection procedure for the on-site control panel of the fire extinguishing system in a time chart.

[0095] As shown in Figure 6, when the central control panel 15 determines, for example, the timing for inspecting the on-site control console 30 once a day using the inspection instruction unit 90 (Yes in step S1), it sends an inspection instruction signal to, for example, the on-site control console 30 (30-1) (step S2).

[0096] The inspection unit 84 located in the field control unit 82 of the field control console 30 (30-1), which has detected the reception of an inspection instruction signal from the central control panel 15 (step S3), reads the switch signal from the tamper switch 54 located in the control box 46 (step S4), and if the switch signal is ON, it determines that the door 50 is closed (Yes in step S5), and turns on the backlight of the liquid crystal panel 6010 in the liquid crystal display device 60 for a predetermined time to set it to display state (step S6).

[0097] On the other hand, if the switch signal from the tamper switch 54 is off, it is determined that the door 50 is open (No. in step S5). In this case, the door 50 is opened and the on-site control console 30 (30-1) is in use (operating), so no inspection is performed, and the system waits for the next inspection instruction signal to be received (step S3).

[0098] Next, the inspection unit 84 reads the light received signal from the photodetector 56 located inside the door 50 (step S7), and if the predetermined display conditions are met, for example, if the level of the light received signal is above a predetermined value, it confirms that the liquid crystal display device 60 is displaying normally (Yes in step S8), and the inspection result indicates that the display is normal (step S9).

[0099] On the other hand, if the light signal read by the inspection unit 84 from the photodetector 56 does not satisfy the predetermined display conditions, for example, if the level of the light signal is below a predetermined value, the liquid crystal display device 60 is checked for an abnormal display (No. in step S8), and the display abnormality is retained as the inspection result (step S10).

[0100] Next, the inspection unit 84, as part of the inspection of the audible alarm unit, sounds an audible signal for a predetermined time so that a predetermined alarm sound is emitted from the speaker 7810 provided in the communication unit 78 (step S11), reads the audible signal from the microphone 58 located inside the door 50 (step S12), and if the predetermined acoustic conditions are met, for example, if the level of the acoustic signal is above a predetermined value, confirms that the audible alarm unit, including the speaker 7810, is functioning normally (Yes in step S13), and maintains that the acoustics are normal as an inspection result (step S14).

[0101] On the other hand, if the acoustic signal read from the microphone 58 by the inspection unit 84 does not satisfy the predetermined acoustic conditions, for example, if the level of the acoustic signal is below a predetermined value, the acoustic alarm unit is checked for abnormality (No. in step S13), and the acoustic abnormality is retained as the inspection result (step S15).

[0102] Next, the inspection unit 84 transmits the inspection results, such as whether the display is normal or abnormal, and whether the audible alarm is normal or abnormal, to the central control panel 15 (step S16), and the central control panel 15 receives the inspection results and notifies the central control panel (step S17).

[0103] Once the inspection operation of the on-site control console 30(30-1) is completed, the central control panel 15 sends an inspection instruction signal to the on-site control console 30(30-2), and similarly inspects the liquid crystal display device and the audible alarm unit and reports the inspection results.

[0104] [d. Variations of the present invention] Modifications of the fire extinguishing system according to the present invention will now be described. In addition to the embodiments described above, the fire extinguishing system of the present invention includes the following modifications.

[0105] (Variable head and fixed head) In the above embodiment, a medium-sized water cannon system equipped with a medium-range nozzle that has a maximum water discharge distance of approximately 70m is used as an example of a water cannon system with a variable head. However, this also includes a large-scale water cannon system equipped with a long-range nozzle that has a maximum water discharge distance of approximately 90m, or a small-scale water cannon system equipped with a short-range nozzle that has a maximum water discharge distance of approximately 40m.

[0106] Furthermore, although the above embodiment took a movable water-discharge type fire extinguishing system equipped with a water cannon device as an example, the same can be applied to the on-site control panel of a fixed water-discharge type fire extinguishing system equipped with a fixed head. The fixed water-discharge type fire extinguishing system protects the high ceilings of general buildings such as shops and warehouses, and side wall type heads are installed in the protected area, and ceiling type heads are installed in the protected area, and the on-site control unit is equipped with an control box, a door opening / closing detector, a display device, a display detection unit and an inspection unit.

[0107] Furthermore, while the above embodiment involves inspecting the LCD display device and the audible alarm unit of the on-site control console in a single, continuous inspection command, it is not limited to this configuration, and the inspections may be performed individually. For example, the highly important display device may be inspected once a day, while the less important audible alarm unit may be inspected once a week, for instance.

[0108] (others) Furthermore, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the above embodiments. [Explanation of Symbols]

[0109] 10: Scanning fire detector 11:Protection area 12(12-1), 12(12-2): Water cannon system 14: Surveillance Center 15: Central control panel 16: Central Control Console 18: Fire pump equipment 20: Pump 22: Water source tank 24: Pump control panel 26: Fire extinguishing piping 28(28-1), 28(28-2): Water cannon control panel 30(30-1), 30(30-2): On-site control console 32: Photoelectric separation type sensor 3210: Light-emitting part 3212: Light receiving part 34: Fire alarm receiving panel 36(36-1), 36(36-2): ITV camera 38(38-1), 38(38-2): Surveillance ITV camera 40: ITV control unit 42: ITV Monitor 44: Printer 45,78: Call section 46:Operation box 48: Cabinet 50: Door 52: Door locking device 54: Tamper switch 56: Photo Detector 58: Mike 60: Liquid crystal display device 6010: LCD panel 6012: Touch panel 62: Operation display section 64: Control Rights Setting Unit 65: Water discharge mode setting section 66: Range Selection Section 68: Nozzle rotation control unit 70: Water discharge operation section 72: Key Switch 74: Emergency Stop Switch 75: Pump test button 76: Call button 7810: Speaker 80: Acoustic hole 82: Local Control Unit 84: Inspection Department 90: Inspection instruction unit

Claims

1. A water discharge unit that sprays firefighting water, A local control unit that controls the operation of the water discharge unit, A field operation unit that instructs the field control unit to operate the water discharge unit, A fire extinguishing system in which multiple on-site facilities equipped with the following features are provided for a predetermined protected area, The aforementioned on-site operation unit is, A control box equipped with a door that can be opened and closed, A door opening / closing detector for detecting the opening and closing of the aforementioned door, A display device housed in the control box has a screen operation function that allows the water discharge unit to be operated by touch operation on the screen, and the screen is hidden when the door is closed and displayed when the door is open. A display detection unit is provided inside the control box and detects the screen display state of the display device when the door is closed. An inspection unit, upon receiving an inspection signal from the central control unit at a predetermined interval shorter than the periodic inspection period, sets the display device to display state based on the detection of the door closing by the door opening / closing detector, transmits a display normal signal to the central control unit if predetermined screen display conditions are met based on the detection result of the display detection unit, and transmits a display abnormal signal to the central control unit if the predetermined screen display conditions are not met. A fire extinguishing system characterized by being equipped with the following features.

2. The fire extinguishing system according to claim 1, The aforementioned display device comprises a liquid crystal panel and a touch panel, The display detection unit is a light-receiving element or an image sensor, The fire extinguishing system is characterized in that, upon receiving the inspection signal, the inspection unit turns on the backlight of the liquid crystal panel, transmits a display normal signal when the predetermined screen display conditions are met based on the detection result of the light receiving element or the image sensor, and transmits a display abnormal signal when the predetermined screen display conditions are not met.

3. The fire extinguishing system according to claim 2, The light-receiving element or the image sensor detects the amount of light received due to the backlight of the liquid crystal panel being lit. The inspection unit is characterized in that, as a predetermined screen display condition, it determines that the display is normal when the amount of light received by the light receiving element or image sensor is equal to or exceeds a predetermined value, and determines that the display is abnormal when the amount of light received is less than or falls below a predetermined value.

4. The fire extinguishing system according to claim 2, The light-receiving element or the image sensor detects the amount of light received due to the backlight of the liquid crystal panel being lit. The inspection unit is characterized in that, as a predetermined screen display condition, it determines the change between the previous light amount detected by the light receiving element or image sensor and the current light amount, determines that the display is normal if the change in the light amount is within a predetermined range, and determines that the display is abnormal if the change in the light amount is outside the predetermined range.

5. The fire extinguishing system according to claim 1, The aforementioned on-site operating unit further, A communication device for communicating with the aforementioned central control unit, An acoustic alarm unit that sounds an alarm using the aforementioned communication device, A sound detection unit is provided inside the control box to detect the alarm sound caused by the sounding of the audible alarm unit, Equipped with, The fire extinguishing system is characterized in that, upon receiving the inspection signal, the inspection unit sounds the audible alarm unit on the condition that the door is closed by the door opening / closing detector, transmits an audible normal signal when predetermined acoustic conditions are met by the acoustic detection unit, and transmits an audible abnormal signal when the predetermined acoustic conditions are not met.

6. The fire extinguishing equipment according to claim 5, The aforementioned acoustic detector is a microphone, and the microphone detects the volume of sound produced by the sound alarm unit. The inspection unit is characterized in that, as a predetermined acoustic condition, it determines that the sound is normal when the volume detected by the microphone is equal to or greater than a predetermined value or exceeds the predetermined value, and determines that the sound is abnormal when the volume is less than the predetermined value or falls below the predetermined value.

7. The fire extinguishing system according to claim 1, The fire extinguishing system is characterized in that the water discharge section includes a movable head capable of changing the water discharge range and a fixed head with a fixed water discharge range.

Images