Water discharge device

Abstract

To shorten the time required for processing to specify a fire source position by using a sensor in a water discharge device equipped with the sensor that rotates in two axial directions.SOLUTION: A water discharge device 30 includes a sensor part 33, a water discharge nozzle 34, a rotation driving part 35, and an elevation driving part 36. The sensor part 33 includes an infrared camera 331 and an infrared sensor 332 which are used to specify a fire source position within a monitoring area. The water discharge nozzle 34 rotates in the rotation direction around a rotation axis and can discharge water towards the fire source position across a range in the elevation direction. The rotation driving part 35 rotates the sensor part 33 in the rotation direction around the rotation axis along with the water discharge nozzle 34. The elevation driving part 36 rotates the sensor part 33 in the elevation direction around the elevation axis independently of the water discharge nozzle 34.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a water discharge device. [Background technology]

[0002] 2. Description of the Related Art There is known a fire extinguishing device in which a rotary head having a nozzle for discharging a fire extinguishing liquid is rotated in two axial directions (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-5217 A Summary of the Invention [Problem to be solved by the invention]

[0004] Because the water-discharging nozzle is heavy, for example, when a sensor used to identify the location of a fire source is rotated in an elevation direction together with the water-discharging nozzle, the rotation speed becomes slow, and as a result, the process of identifying the location of the fire source takes time.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a technology for shortening the time required for processing to identify the location of a fire source using a sensor in a water-discharging device having a sensor that rotates in two axial directions. [Means for solving the problem]

[0006] In order to solve the above problems, a water-discharging device according to a first aspect of the present disclosure includes a sensor unit and a water-discharging nozzle. The sensor unit includes a sensor used to identify a fire source position within a monitoring area. The water-discharging nozzle rotates in a rotational direction about a rotation axis and can discharge water in a range extending in a depression / elevation direction toward the fire source position. The sensor unit rotates in the rotational direction together with the water-discharging nozzle about the rotation axis and rotates in the depression / elevation direction independently of the water-discharging nozzle about the elevation axis. Effect of the Invention

[0007] According to the present disclosure, in a water-discharging device having a sensor that rotates in two axial directions, the time required for processing to identify the location of a fire source using this sensor can be shortened. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of a configuration of a water discharge system according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of the configuration of a water discharge device. [Diagram 3] FIG. 2 is a front view of the water-discharging device with the water-discharging nozzle facing forward. [Figure 4] FIG. 2 is a plan view of the water-discharging device with the water-discharging nozzle facing forward. [Diagram 5] FIG. 2 is a front view of the water-discharging device with the sensor unit facing forward. [Figure 6] FIG. 2 is a side view of the water-discharging device with the sensor unit facing forward. [Figure 7] FIG. 2 is a plan view of the water-discharging device with the sensor unit facing forward. [Figure 8] FIG. 11 is a diagram showing an example of water discharge by a water discharge device. [Figure 9] FIG. [Figure 10] 10 is a cross-sectional view of the sensor portion taken along line AA' in FIG. [Figure 11] 10 is a flowchart showing the operation of the water discharge device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (A: Embodiment) (A-1: Water discharge system configuration) FIG. 1 is a diagram showing an example of the configuration of a water discharge system 1 according to this embodiment. When a fire occurs in a monitoring area, the water discharge system 1 detects the flame and discharges water toward the fire source. As shown in FIG. 1, the water discharge system 1 includes a fire detector 10, a fire receiver 15, a central control panel 20, a local control panel 25, and a water discharge device 30. The fire detector 10 is connected to the fire receiver 15 via a signal line. The fire receiver 15 and the central control panel 20 are connected via a signal line. The central control panel 20 and the water discharge device 30 are loop-connected via a signal line. Similarly, the local control panel 25 and the water discharge device 30 are loop-connected via a signal line. Note that, although FIG. 1 shows one each of the fire detector 10, the fire receiver 15, the local control panel 25, and the water discharge device 30, a plurality of each of these devices may be provided.

[0010] The fire detector 10 detects a fire occurring in the monitoring area. An example of the fire detector 10 is a smoke detector that detects smoke. When the fire detector 10 detects a fire, it transmits a fire signal to the fire receiver 15. When the fire receiver 15 receives the fire signal from the fire detector 10, it transmits a fire report signal to the central control panel 20. If a transmitter is connected to the fire receiver 15, the fire report signal may be transmitted from the fire receiver 15 to the central control panel 20 in response to pressing a push button on the transmitter. The central control panel 20 controls each device included in the water discharge system 1. When the central control panel 20 receives the fire report signal from the fire receiver 15, it activates the water discharge device 30 to identify the location of the fire source.

[0011] When the water-discharging system 1 includes a plurality of water-discharging devices 30, the central control panel 20, upon receiving location information of the fire source from any of the water-discharging devices 30, selects the water-discharging device 30 that is closest to the fire source among the plurality of water-discharging devices 30, and instructs the local control panel 25 to discharge water from the selected water-discharging device 30. The local control panel 25, in accordance with the instruction from the central control panel 20, causes the water-discharging device 30 that is closest to the fire source to discharge water toward the fire source location. The water-discharging device 30 identifies the fire source location under the control of the central control panel 20, and transmits location information of the fire source to the central control panel 20. The water-discharging device 30 also discharges water toward the fire source location under the control of the local control panel 25.

[0012] (A-1-1: Electrical configuration of the water discharge device) 2 is a diagram showing an example of the electrical configuration of the water-discharging device 30. The water-discharging device 30 includes a control unit 31, a communication unit 32, a sensor unit 33, a water-discharging nozzle 34, a rotation drive unit 35, and a depression / elevation drive unit 36. Each unit of the water-discharging device 30 is connected by a bus.

[0013] The control unit 31 controls each part of the water discharge device 30. The control unit 31 is composed of a memory and a processor. The memory includes, for example, a RAM and an EEPROM, and stores a program for realizing the functions of the water discharge device 30. The processor includes, for example, one or more CPUs, and executes the program stored in the memory. At least a part of the control unit 31 may be included in the sensor unit 33.

[0014] In this embodiment, the processor of the control unit 31 executes a fire source search process and a flame detection process by operating according to a program stored in the memory. The fire source search process is a process for identifying a high-temperature part in an infrared image of a monitoring area as a heat source, i.e., a fire source. The flame detection process is a process for determining whether or not the fire source identified in the fire source search process is a flame.

[0015] The communication unit 32 transmits and receives various signals to and from the central control panel 20 and the local control panel 25, i.e., communicates with the central control panel 20 and the local control panel 25.

[0016] The sensor unit 33 rotates in two axial directions, a rotation direction and a tilt direction, and performs an operation for detecting a fire source and determining the fire source position. The rotation direction is also called the left-right direction and is a substantially horizontal direction. On the other hand, the tilt direction is also called the up-down direction and is a substantially vertical direction. The rotation direction and the tilt direction are perpendicular to each other. The sensor unit 33 has an infrared camera 331 and an infrared sensor 332.

[0017] The infrared camera 331 captures infrared images while rotating in a rotation direction and a pitch direction. In the fire source search process, the fire source is identified based on the infrared image of the monitoring area captured by the infrared camera 331.

[0018] The infrared sensor 332 has, for example, a pyroelectric element 332d, and detects a flame by sensing light emitted from the flame. The infrared sensor 332 may be a two-wavelength infrared sensor. In the flame detection process, it is determined whether or not the fire source identified in the fire source search process is a flame based on the output of the infrared sensor 332.

[0019] When the fire source is determined by the sensor unit 33, the water-discharging nozzle 34 rotates in the swiveling direction to face the direction of the fire source under the control of the control unit 31. The water-discharging nozzle 34 discharges water toward the fire source in accordance with the control of the on-site control panel 25 under the control of the control unit 31. In other words, the control unit 31 controls the water discharge of the water-discharging nozzle 34.

[0020] The swivel drive unit 35 rotates the sensor unit 33 and the water-discharging nozzle 34 in the swivel direction around the swivel axis AX1 under the control of the control unit 31. The swivel drive unit 35 includes, for example, a motor, a motor driver, and an encoder. The motor rotates the sensor unit 33 and the water-discharging nozzle 34 in the swivel direction under the control of the motor driver. That is, in this embodiment, both the sensor unit 33 and the water-discharging nozzle 34 rotate in the swivel direction. The motor driver controls the motor under the control of the control unit 31. The encoder detects the swivel angle. The control unit 31 controls the motor driver in accordance with the swivel angle detected by the encoder, thereby controlling the swivel drive unit 35.

[0021] The elevation / depression drive unit 36 ​​rotates the sensor unit 33 in the elevation / depression direction about the elevation axis AX2 under the control of the control unit 31. That is, in this embodiment, the sensor unit 33 rotates in the elevation / depression direction independently of the water-discharging nozzle 34. The elevation / depression drive unit 36 ​​includes, for example, a motor, a motor driver, and an encoder. The motor rotates the sensor unit 33 in the elevation / depression direction under the control of the motor driver. The motor driver controls the motor under the control of the control unit 31. The encoder detects the elevation / depression angle. The control unit 31 controls the motor driver in accordance with the elevation / depression angle detected by the encoder, thereby controlling the elevation / depression drive unit 36.

[0022] (A-1-2: Structure of the water discharge device) 3 to 7 are diagrams showing an example of the appearance of the water-discharging device 30. In FIG. 3 to FIG. 7, the Z axis is a vertical coordinate axis. In FIG. 3 to FIG. 7, the Y axis and the X axis are coordinate axes that are mutually orthogonal and perpendicular to the Z axis, that is, coordinate axes that are parallel to the bottom surface of the monitoring area. In this embodiment, the direction of the Y axis is referred to as the front direction. FIG. 3 is a front view of the water-discharging device 30 in a state where the water-discharging nozzle 34 faces the front. FIG. 4 is a plan view of the water-discharging device 30 in a state where the water-discharging nozzle 34 faces the front. The state where the water-discharging nozzle 34 faces the front means a state where the water-discharging nozzle 34 is aligned with the Y axis. FIG. 5 is a front view of the water-discharging device 30 in a state where the sensor unit 33 faces the front. FIG. 6 is a side view of the water-discharging device 30 in a state where the sensor unit 33 faces the front. FIG. 7 is a plan view of the water-discharging device 30 in a state where the sensor unit 33 faces the front. The state where the sensor unit 33 faces forward means that the normal to the sensor surface of the sensor unit 33 is aligned along the Y axis.

[0023] 3, 5, and 6, the space within the housing of the water-discharging device 30 is divided into storage spaces SP3, SP2, and SP1 along the vertical direction. Storage space SP1 is located above storage space SP2 in the vertical direction, and storage space SP3 is located below storage space SP2 in the vertical direction. Storage space SP1 accommodates a control unit 31, a communication unit 32, and a swivel drive unit 35. Storage space SP2 accommodates a sensor unit 33, a water-discharging nozzle 34, and a tilt drive unit 36. Incidentally, storage space SP1 is not shown in FIGS. 4 and 7.

[0024] (A-1-3: Water discharge nozzle structure) The water-discharging nozzle 34 rotates in a rotation direction D1 in Fig. 4 around a rotation axis AX1. In this embodiment, the rotation direction D1 is the direction of rotation in a plane perpendicular to the Z axis (hereinafter referred to as the XY plane). As shown in Figs. 3 and 4, the water-discharging nozzle 34 is a cylindrical member, and on the side surface of the water-discharging nozzle 34, nozzles 341a, 341b, 341c, and 341d are arranged side by side in the elevation direction.

[0025] Fig. 8 is a diagram showing how water is discharged by the water-discharging device 30. In this embodiment, water is discharged in a band along the elevation / depression direction D2 as shown in Fig. 8 by discharging water from each of the nozzles 341a, 341b, 341c, and 341d that are lined up on the side of the water-discharging nozzle 34. In Fig. 8, the band-shaped discharge of water from the water-discharging nozzle 34 is represented by dotted hatching. Because the water-discharging nozzle 34 discharges water in a band along the elevation / depression direction D2, water can be discharged over a range in the elevation / depression direction (i.e., a range extending in the elevation / depression direction D2) without rotating the water-discharging nozzle 34 in the elevation / depression direction D2. It should be noted that the water-discharging nozzle 34 does not necessarily have to discharge water in a band. For example, the monitoring area may be divided along the Y direction into a near range close to the water-discharging device 30 and a far range far from the water-discharging device 30, and the water-discharging nozzle 34 may discharge water into either the near range or the far range that includes the fire source position. The near range and the far range may partially overlap. Even with this configuration, the water-discharging nozzle 34 can discharge water over a range in the elevation and depression directions.

[0026] (A-1-4: Structure of the sensor part) The sensor unit 33 is disposed on the pivot axis AX1 of the water-discharging nozzle 34. The water-discharging nozzle 34 and the sensor unit 33 are disposed at a distance from each other along the pivot direction D1. This is to prevent the sensor unit 33 from being splashed by water discharged from the water-discharging nozzle 34. In this embodiment, the axial direction C1 of the cylindrical water-discharging nozzle 34 and the front direction C2 of the sensor unit 33 form an angle of 120 degrees, but the angle between the water-discharging nozzle 34 and the sensor unit 33 is not limited to 120 degrees. The sensor unit 33 rotates in the elevation direction D2 shown in FIG. 6 around the elevation axis AX2.

[0027] The water-discharging device 30 includes a control unit 31, a communication unit 32, a sensor unit 33, a water-discharging nozzle 34, a swivel drive unit 35, and a tilt drive unit 36, as well as adjustment units 37a and 37b and a reference plate 38. The adjustment units 37a and 37b are used to adjust the inclination of the sensor unit 33, more precisely, the inclination of the water-discharging device 30 including the sensor unit 33. The reference plate 38 is used as a location for installing a spirit level used when adjusting the inclination of the sensor unit 33. The reference plate 38 is fixed to the swivel axis AX1.

[0028] When installing the water-discharging device 30, a worker who installs the water-discharging device 30 places a spirit level on the reference plate 38 to ensure that the device is level. Specifically, the worker inserts bolts into holes provided in the adjustment units 37a and 37b and tightens or loosens them to adjust the horizontal inclination of the sensor unit 33 so that the sensor unit 33 is level. When adjusting the horizontal inclination of the sensor unit 33, the worker may rotate the sensor unit 33 in the rotation direction D1 to ensure that the sensor unit 33 is level at multiple positions.

[0029] Conventionally, when installing a water discharger, a level was placed on the top plate of the water discharger housing to ensure it was level, but this method may result in the sensor unit not being level. If the sensor unit is not level, the accuracy of identifying the fire source position decreases. According to this embodiment, the decrease in accuracy of identifying the fire source position caused by the horizontal inclination of the sensor unit 33 is avoided.

[0030] (A-1-5: Structure inside the sensor unit) FIG. 9 is a front view of the sensor unit 33, and FIG. 10 is a cross-sectional view of the sensor unit 33 taken along line AA′ in FIG. 9. The sensor unit 33 includes an infrared camera 331, an infrared sensor 332, and a housing 333 housing the infrared camera 331 and the infrared sensor 332. The wiring inside the housing 333 of the sensor unit 33 is covered with a ferrite core to prevent electromagnetic noise from the wiring. The infrared camera 331 and the infrared sensor 332 are housed in one housing 333 because housing each in a separate housing would make the sensor unit 33 heavy and slow down the rotation speed of the sensor unit 33. The housing 333 has a lid that covers the front of the sensor unit 33, but the lid is not shown in FIG. 9.

[0031] 9, the infrared camera 331 and the infrared sensor 332 are arranged side by side along the Z axis, i.e., along the elevation direction D2. More specifically, the infrared camera 331 is arranged above the elevation axis AX2 in the Z axis direction. By arranging the infrared camera 331 above the elevation axis AX2 in the Z axis direction, the housing of the water discharge device 30 is unlikely to enter the shooting range even when the infrared camera 331 is pointed downward. The infrared sensor 332 is arranged below the elevation axis AX2 in the Z axis direction, i.e., below the infrared camera 331.

[0032] A transmission part 331a is provided on the front side of the infrared camera 331. A transmission part 332b is provided on the front side of the infrared sensor 332. Each of the transmission parts 331a and 332b is composed of a hole through which light enters and an optical filter that transmits infrared light from the light that passes through the hole. The hole is formed in the lid of the housing 333. The transmission part 331a is, for example, a silicon window, and the transmission part 332b is, for example, a sapphire window. In this embodiment, the infrared camera 331 and the infrared sensor 332 each have a different transmission part. If the transmission part 331a and the transmission part 332b are made into one transmission part, the transmission part needs to be made large, and since it is necessary to transmit all of the wavelength bands suitable for the infrared camera 331 and the infrared sensor 332, noise increases. Therefore, the transmission part 331a of the infrared camera 331 and the transmission part 332b of the infrared sensor 332 are provided separately.

[0033] (A-1-6: Infrared camera configuration) The infrared camera 331 includes an adjustment plate 331b, a lens 331c, an imaging element 331d, and a metal housing that houses the imaging element 331d. The imaging element 331d is housed in a metal housing to prevent electromagnetic noise from entering through the transmission portion 331a. The adjustment plate 331b is used to attach the infrared camera 331 to the housing 333 of the sensor unit 33. The adjustment plate 331b also serves to block light L2 so that the light L2 that has passed through the transmission portion 332b does not enter the imaging element 331d of the infrared camera 331. This prevents the light L2 that has passed through the transmission portion 332b from entering the imaging element 331d of the infrared camera 331, and as a result, a decrease in the accuracy of the fire source search process performed using the infrared camera 331 is avoided.

[0034] (A-1-7: Configuration of infrared sensor) The infrared sensor 332 includes a shield case 332a, a view limiting section 332c, and a pyroelectric element 332d. The shield case 332a is a metal housing that houses the pyroelectric element 332d. The reason why the pyroelectric element 332d is housed in the shield case 332a is to prevent electromagnetic noise from entering through the transmission section 332b. The view limiting section 332c limits the view of the pyroelectric element 332d. The view of the infrared sensor 332 is narrower than that of the infrared camera 331 to reduce false detection due to the incidence of light other than light emitted from the flame. The view limiting section 332c also serves to block the light L1 so that the light L1 transmitted through the transmission section 331a does not enter the pyroelectric element 332d of the infrared sensor 332. This prevents the light L1 transmitted through the transmitting portion 331a from being incident on the pyroelectric element 332d of the infrared sensor 332, and as a result, a decrease in the accuracy of the flame detection process performed using the infrared sensor 332 is avoided.

[0035] (A-2: Operation of the water discharge system) 11 is a diagram showing an example of the operation of the water-discharging device 30. When the central control panel 20 receives a fire notification signal from the fire receiver 15, it transmits an activation signal to the water-discharging device 30. When the activation signal is received from the central control panel 20, the control unit 31 starts searching for a fire source using the sensor unit 33 (starts scanning).

[0036] When searching for a fire source is started, first, the control unit 31 rotates the sensor unit 33 in the rotation direction D1 by a predetermined angle, for example, 60 degrees, using the rotation drive unit 35. At this time, the elevation angle of the sensor unit 33 is fixed to an angle at which the entire bottom surface of the monitoring area can be photographed. The infrared camera 331 included in the sensor unit 33 photographs an infrared image of the monitoring area at each predetermined angle. The control unit 31 identifies a high temperature part in the infrared image as the approximate location of the fire source (pre-scan).

[0037] When the predetermined angle is 60 degrees, the sensor unit 33 first captures an infrared image of the range R1 of the monitoring area shown in FIG. 11 using the infrared camera 331 according to the control of the control unit 31. Then, the rotation drive unit 35 rotates the sensor unit 33 by a predetermined angle in the rotation direction D1 according to the control of the control unit 31. The sensor unit 33 captures an infrared image of the range R2 of the monitoring area using the infrared camera 331 according to the control of the control unit 31. Then, the rotation drive unit 35 rotates the sensor unit 33 by a predetermined angle in the rotation direction D1 according to the control of the control unit 31. The sensor unit 33 captures an infrared image of the range R3 of the monitoring area using the infrared camera 331 according to the control of the control unit 31. The control unit 31 analyzes the infrared images of the ranges R1 to R3 of the monitoring area captured by the infrared camera 331. In the example shown in FIG. 11, the range R2 includes a fire source, so the infrared image of the range R2 includes a high-temperature part. Therefore, the control unit 31 identifies the high temperature portion in the infrared image of the range R2 as the approximate location of the heat source.

[0038] When the pre-scan is completed, the control unit 31 rotates the sensor unit 33 in the elevation direction D2 using the elevation drive unit 36, and identifies the heat source position in the elevation direction D2 using the infrared camera 331 (detailed elevation / depression angle scan).

[0039] Specifically, in the elevation / depression detailed scan, the elevation driver 36 rotates the sensor unit 33 in the elevation / depression direction D2 by a predetermined angle in the elevation / depression angle range where the sensor unit 33 faces the vicinity of the heat source position under the control of the controller 31. This predetermined angle is smaller than the predetermined angle used in the pre-scan. At this time, the rotation angle of the sensor unit 33 is fixed to an angle facing the direction around the heat source position under the control of the controller 31. The infrared camera 331 rotates in the elevation / depression direction D2 and captures an infrared image at each predetermined angle under the control of the controller 31. The controller 31 analyzes the infrared image captured by the infrared camera 331 and identifies the heat source position in the elevation / depression direction D2 from the analysis result of the infrared image. The heat source position in the elevation / depression direction D2 identified by this elevation / depression detailed scan is more accurate than the heat source position identified by the above-mentioned pre-scan.

[0040] Next, the control unit 31 rotates the sensor unit 33 in the rotation direction D1 using the rotation drive unit 35, and identifies the heat source position in more detail in the rotation direction D1 using the infrared camera 331 (rotation angle detailed scan).

[0041] Specifically, in the swivel angle detailed scan, the swivel drive unit 35 rotates the sensor unit 33 in the swivel direction D1 by a predetermined angle in the range of the swivel angle in which the sensor unit 33 faces the vicinity of the heat source position, according to the control of the control unit 31. This predetermined angle is smaller than the predetermined angle used in the prescan. In other words, in the swivel angle detailed scan, the heat source position is searched for more precisely than in the prescan described above. At this time, the elevation / depression angle of the sensor unit 33 is fixed to an angle that faces the direction of the heat source position identified in the elevation / depression detailed scan. The infrared camera 331 rotates in the swivel direction D1 and captures an infrared image at each predetermined angle according to the control of the control unit 31. The control unit 31 analyzes the infrared image captured by the infrared camera 331 and identifies the heat source position in the swivel direction D1 from the analysis result of the infrared image. The heat source position in the swivel direction D1 identified in the swivel angle detailed scan is more accurate than the heat source position identified in the prescan described above.

[0042] When the elevation / detailed scan and the rotation angle detailed scan are completed, the control unit 31 rotates the sensor unit 33 in the rotation direction D1 and the elevation direction D2 by the rotation drive unit 35 and the elevation drive unit 36 ​​so that the front of the infrared sensor 332 faces the direction of the heat source position identified in the elevation / detailed scan and the rotation angle detailed scan (adjusting the direction of the infrared sensor). The front of the infrared sensor 332 faces the direction of the fire source position in the elevation direction D2 means that the line passing through the center of the sensor surface of the infrared sensor 332 and the fire source position is perpendicular to the sensor surface. The infrared sensor 332 detects the flame from the heat source position in front. In this way, the accuracy of the flame detection process is improved by detecting the flame after facing the front of the infrared sensor 332 in the elevation direction D2 toward the fire source position.

[0043] Next, the control unit 31 judges whether or not there is a flame based on the detection result by the infrared sensor 332 (flame presence / absence judgment). When the control unit 31 judges that there is a flame, the communication unit 32 transmits position information of the fire source to the central control panel 20 (position information transmission). As this position information, the rotation angle and elevation angle of the heat source position identified in the detailed depression / elevation angle scan and detailed rotation angle scan are used.

[0044] The central control panel 20 selects the water-discharging device 30 closest to the fire source position based on the position information, and transmits a water-discharging signal to the local control panel 25 via the water-discharging device 30 to instruct the water-discharging device 30 to discharge water toward the fire source position. The control unit 31 of the water-discharging device 30 that relayed the water-discharging signal causes the turning drive unit 35 to rotate the water-discharging nozzle 34 in the turning direction D1 so that it faces the direction of the fire source position. The local control panel 25 controls the valve of the water-discharging nozzle 34 of the selected water-discharging device 30 to start discharging water toward the fire source position.

[0045] As described above, in the water-discharging device 30 of this embodiment, the water-discharging nozzle 34 does not rotate in the elevation / depression direction D2, and the sensor unit 33 rotates in the elevation / depression direction D2 independently of the water-discharging nozzle 34. Therefore, according to the water-discharging device 30, the rotation speed of the sensor unit 33 in the elevation / depression direction D2 is increased compared to when the sensor unit 33 is rotated in the elevation / depression direction D2 together with the water-discharging nozzle 34, and as a result, the time required to identify the position of the fire source is shortened.

[0046] (B: Modified Example) The above is a description of the embodiment, but the contents of this embodiment may be modified as follows. In addition, the following modifications may be combined. (1) A shielding plate may be provided between infrared camera 331 and infrared sensor 332 inside the housing of sensor unit 33. This shielding plate may block light that has passed through a transmitting portion of one of infrared camera 331 and infrared sensor 332 from entering the other.

[0047] (2) The sensor unit 33 does not have to include both the infrared sensor 332 and the infrared camera 331. The sensor unit 33 may include either the infrared sensor 332 or the infrared camera 331.

[0048] (3) The fire source detection sensor does not have to be an infrared camera. For example, the fire source detection sensor may be an infrared linear sensor. The flame detection sensor does not have to be an infrared sensor. The flame detection sensor may be a three-wavelength flame detector.

[0049] (4) The fire source detection sensor and the flame detection sensor do not necessarily have to be housed in a single housing. The fire source detection sensor and the flame detection sensor may be housed in separate housings and fixed to the pivot axis AX1 of the water-discharging nozzle 34. [Explanation of symbols]

[0050] 1: Water discharge system, 10: Fire detector, 15: Fire receiver, 20: Central control panel, 25: Local control panel, 30: Water discharge device, 31: Control unit, 32: Communication unit, 33: Sensor unit, 34: Water discharge nozzle, 35: Rotation drive unit, 36: Elevation drive unit, 331: Infrared camera, 332: Infrared sensor.

Claims

1. A sensor unit including a sensor used to identify a fire source position within a monitoring area; a water discharge nozzle that rotates in a rotation direction around a rotation axis and can discharge water in a range extending in a downward and upward direction toward the fire source position, The sensor unit rotates in the rotation direction together with the water-discharging nozzle around the rotation axis, and rotates in the elevation direction independently of the water-discharging nozzle around the elevation axis. Water spray device.

2. the sensor unit includes an infrared camera and an infrared sensor, The infrared camera and the infrared sensor are housed in a single housing. The water discharge device according to claim 1 .

3. The infrared camera is disposed above the elevation axis. The water discharge device according to claim 2.

4. The infrared camera and the infrared sensor are arranged side by side along the elevation direction, After the fire source search is performed using the infrared camera, the infrared camera and the infrared sensor are rotated in the elevation direction so that the front of the infrared sensor faces the direction of the fire source position, and then flame detection is performed using the infrared sensor. The water discharge device according to claim 2.

5. the housing housing the infrared camera and the infrared sensor has a transmission portion corresponding to the infrared camera and a transmission portion corresponding to the infrared sensor, a member that blocks light that passes through a transmission portion corresponding to one of the infrared camera and the infrared sensor and enters the other of the infrared camera and the infrared sensor is provided in the housing that houses the infrared camera and the infrared sensor; The water discharge device according to claim 2.

Images