JP6854122B2 - Fire point detector and firefighting equipment - Google Patents

Description

The present invention relates to a fire point detection device that detects and identifies the position of a fire point, which is a place where a fire occurs, preferably when a fire breaks out in a large indoor space (for example, a high ceiling) such as a large-scale facility.

Patent Document 1 discloses an automatic fire detection device that detects ignition of a monitored object or the like. This automatic fire detection device monitors fires in atriums such as buildings (large indoor spaces such as large-scale facilities) and wastes that are temporarily stored and incinerated in garbage incinerators as monitored objects. Detects ignition, etc. The automatic fire detection device processes the captured image signals obtained from the pair of infrared / visible composite cameras to detect the occurrence of fire and the occurrence of smoke. The space including the object to be monitored is divided into a plurality of detection blocks in the length direction, the width direction, and the height direction by processing the captured image signals obtained from the pair of infrared / visible composite cameras. Calculate the three-dimensional position of the fire point or smoke point.

In the conventional example shown in FIG. 9, the position of the flame 300 is measured by using a plurality of thermal cameras C. Information on the position of the flame 300 from the plurality of thermal cameras C is sent to the control unit 302 through the operation panel 301. The operation panel 301 performs a water discharge operation of the water discharge gun 303 based on the information on the position of the flame 300 in response to a command from the control unit 302.

Further, in another conventional example shown in FIG. 10, smoke 400 is measured by using a plurality of photoelectric separation detectors 500 arranged indoors. Each photoelectric separation sensor 500 has a light transmitting unit 501 and a light receiving unit 502, and the light emitted by the light transmitting unit 501 is received by the light receiving unit 502. The light transmitting unit 501 and the light receiving unit 502 are installed at positions within 1 m from the indoor wall 507, respectively, and the distance between the light transmitting unit 501 and the light receiving unit 502 from the wall 508 is 0.6 m or more and 7 m or less.

The distance between the light transmitting unit 501 and the light receiving unit 502 is 5 m to 100 m or less, which is within the range of the nominal monitoring distance. The distance between the optical axis of one set of light transmitting unit 501 and light receiving unit 502 and the optical axis of another set of light transmitting unit 501 and light receiving unit 502 is 14 m or less. The water discharge range due to the rotation of the water discharge gun 506 is between the position of the light transmitting unit 501 and the position of the light receiving unit 502.

When the light emitted by the light transmitting unit 501 is attenuated by the smoke 400 and received by the light receiving unit 502, the light receiving unit 502 sends a detection signal of the smoke 400 to the control panel 504 through the fire receiver 503. The operation panel 505 discharges the water discharge gun 506 toward the smoke 400 in response to a command from the control panel 504. The light receiving unit 502 and the fire receiver 503 are connected by a communication line. (Not shown)

JP-A-3994355

However, since the automatic fire detection device of Patent Document 1 uses a pair of infrared / visible composite cameras to detect the occurrence of a fire and the occurrence of smoke, a fire may occur in a large indoor space such as a large-scale facility. There is a problem that it is difficult to pinpoint the location of the occurrence and it hinders quick fire extinguishing activities.

Further, in the conventional example shown in FIG. 9, in order to accurately detect the position of the flame 300 in a large indoor space such as a large-scale facility, it is necessary to arrange a large number of thermal cameras C. However, each thermal camera C has a mechanical shutter and an expensive lens, and the thermal camera C is expensive.

The shutter of the thermal camera C always opens and closes for a certain period of time to compensate for the temperature inside the camera. In order to ensure that the shutter operates and the flame 300 can be detected at all times, the thermal camera C needs to be replaced every two to three years in consideration of the reliability of the shutter operation.

Therefore, maintenance and maintenance of the thermal camera C is costly, and the running cost is high. Further, since the flame 300 is detected only by the thermal camera C, when a failure occurs in the sensor or the like of the thermal camera C, the thermal camera C may not perform the detection operation, which hinders the quick fire extinguishing activity. There's a problem.

Further, in another conventional example shown in FIG. 10, since the plurality of photoelectric separation detectors 500 detect the smoke 400 by sending light only in the one-axis (one-dimensional, X-axis direction) direction, the smoke 400 is detected. The position of smoke 400 in the Y direction orthogonal to the X-axis direction is unknown. For this reason, it is difficult for the water discharge gun 506 to accurately direct the water to the position of the smoke 400, and the range of water discharged from the water discharge gun 506 becomes wide, so that the amount of water used for water discharge increases. For this reason, there is a problem that prompt fire extinguishing activities are hindered.

The present invention has been made in view of the above, and an object of the present invention is a fire point detection device capable of accurately detecting the position of a fire point, which is a place where a fire occurs, in a large indoor space such as a large-scale facility. Is to provide.

In order to achieve the above object, the fire point detection device according to claim 1 detects the fire point which is the place where the fire occurs by detecting the smoke generated by the fire generated in the indoor space. A first detection unit that irradiates light along a specific direction in the indoor space to detect the position of the smoke in the specific direction, and the identification in the indoor space. A second detection unit is provided, which irradiates light along the intersecting directions to detect the position of the smoke in the intersecting directions.

In the fire point detection device according to claim 1, the first detection unit irradiates smoke with light along a specific direction in an indoor space to detect the position of the smoke in a specific direction. 2 The detection unit irradiates smoke with light along an intersecting direction that intersects a specific direction in an indoor space, and detects the position of the smoke in the intersecting direction. Therefore, since the position of the smoke can be specified at the intersection of the specific direction and the intersection direction, the position of the fire point, which is the place where the fire occurs, can be accurately detected in a large indoor space such as a large-scale facility. ..

In the fire point detection device according to claim 2, the first detection unit is arranged in the indoor space, a plurality of light emitting units for generating infrared light as the light, and the indoor space. It is characterized by having a plurality of light receiving units that face each of the light emitting units and receive the infrared light from the light emitting unit.

In the fire point detection device according to claim 2, the light emitting unit of the first detection unit exposes infrared light to smoke, so that the infrared light received by the light receiving unit is attenuated. Therefore, the light receiving unit of the first detection unit can detect the position of smoke in a specific direction by detecting the attenuation of the received infrared light.

In the fire point detection device according to claim 3, the second detection unit is arranged in the indoor space, includes a plurality of light emitting units that generate infrared light and ultraviolet light as the light, and the indoor space. It is characterized by having at least one light receiving part which is arranged in the above and receives the infrared light and the ultraviolet light from each of the light emitting parts.

In the fire point detection device according to claim 3, the light emitting unit of the second detection unit irradiates smoke with infrared light and ultraviolet light, and the light receiving unit of the second detection unit emits infrared light passing through the smoke. However, the ultraviolet light blocked by smoke is not received or the ultraviolet light is attenuated. This makes it possible to detect the position of smoke in an intersecting direction that intersects a specific direction without being affected by disturbances such as dust.

In the fire point detection device according to claim 4, the first detection unit is arranged in the indoor space, includes a plurality of light emitting units that generate infrared light and ultraviolet light as the light, and the indoor space. It is characterized by having at least one light receiving part which is arranged in the above and receives the infrared light and the ultraviolet light from each of the light emitting parts.

In the fire point detection device according to claim 4, since a plurality of sets of the first detection unit and the second detection unit are arranged at different height directions in the indoor space, they are indoors of a large-scale facility. Even in a large space, it is not affected by disturbances such as dust at each height of the large space. Thereby, the position of the smoke in the crossing direction intersecting with the specific direction can be detected by the detection unit having the same configuration.

In the fire point detection device according to claim 5, the second detection unit is arranged in the indoor space, a plurality of light emitting units for generating infrared light as the light, and the indoor space. It is characterized by having a plurality of light receiving units that face each of the light emitting units and receive the infrared light from the light emitting unit.

In the fire point detection device according to claim 5, the first detection unit and the second detection unit include a first detection unit and a second detection unit that generate infrared light in an intersecting direction intersecting a specific direction. There is. Therefore, by detecting the attenuation of infrared light, the position of smoke in both a specific direction and an intersecting direction can be detected by a detection unit having the same simple configuration.

According to the present invention, it is possible to provide a fire point detection device capable of accurately detecting the position of a fire point, which is a place where a fire occurs, in a large indoor space such as a large-scale facility.

It is a top view which shows the preferable 1st Embodiment of the fire point detection apparatus of this invention. It is a figure which shows the example of the light emitting part and the light receiving part of the 1st detection part shown in FIG. It is a figure which shows the example of the light emitting part of the 2nd detection part and one light receiving part shown in FIG. It is a perspective view which shows the example in which a plurality of sets of fire point detection devices are arranged in the Z-axis direction which is the height direction in the indoor large space RM of a large-scale facility with a high ceiling height. It is a flow chart which shows the fire point detection operation example of a fire point detection apparatus. It is a schematic diagram which shows the example of smoke SK and flame FL. It is a figure which shows the 2nd Embodiment of this invention. It is a figure which shows the 3rd Embodiment of this invention. It is a figure which shows the conventional example. It is a figure which shows another conventional example.

Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

(First Embodiment)
FIG. 1 is a plan view showing a preferred first embodiment of the fire point detection device of the present invention.

<Overall configuration of fire point detection device 1>
The fire point detection device 1 shown in FIG. 1 is arranged in an indoor space. The fire point detection device 1 can also be called a fire point detection system or a fire alarm system. The indoor space is preferably a large indoor space R (for example, a high ceiling) of a building or structure such as a large-scale facility. Large-scale facilities having a large indoor space RM include, for example, exhibition halls, arenas, shopping centers, baseball stadiums, etc., but are not limited to the scale, use, or shape of the large-scale facilities.

When a fire FR occurs in a large indoor space RM, for example, the fire point detection device 1 crosses the position of the fire point, which is the location where the fire FR occurs, in the X-axis direction and the X-axis direction (for example). It can be accurately detected and identified (direction that is substantially parallel to the Y-axis direction, direction that is substantially parallel to the Y-axis direction, or a direction that intersects the Y-axis direction at a sharp angle). In the embodiment of the present invention, the fire point refers to the position of the flame FL below the place where the fire occurs and the smoke SK of the fire FR is generated.

In FIG. 1, the fire point detection device 1 is arranged inside a large indoor space RM that is rectangular when viewed in a plane, for example. The horizontal direction (longitudinal direction) of the indoor large space RM is the X-axis direction, and the vertical direction (short direction) of the indoor large space RM is the Y direction. The indoor large space RM has side surfaces F1 and F2 along the X-axis direction and side surfaces F3 and F4 along the Y direction.

The side surfaces F1 to F4 are a closed wall surface, a wall surface having an opening portion, a surface that is entirely open, or the like, depending on the use of a large-scale facility or the like. The shape of the indoor large space RM is not limited to the example shown in FIG. 1, and any shape can be adopted depending on the building or structure.

The X-axis direction is the first direction, the Y-axis direction is the second direction orthogonal to the X-axis direction, and the Z-axis direction is the third direction orthogonal to the X-axis direction and the Y-axis direction.

As shown in FIG. 1, the fire point detection device 1 includes a first detection unit 10, a second detection unit 20, a plurality of cameras 30 (two cameras in the illustrated example), a control unit 100, and a fire. It has a receiver 110. The control unit 100 is electrically connected to the operation panel 120. The operation panel 120 performs a water discharge operation of the water discharge gun 130.

The first detection unit 10 has a plurality of light emitting units 10A, 10B, 10C and a plurality of light receiving units 10D, 10E, 10F. The light emitting units 10A, 10B, and 10C are arranged on the side surface F3, and the light receiving units 10D, 10E, and 10F are arranged on the side surface F4 facing the side surface F3.

The second detection unit 20 includes a plurality of light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G, and one light receiving unit 20R. The light receiving unit 20R is arranged on the side surface F1. The light emitting units 20A and 20B are arranged on the side surface F3 facing the side surface F1, the light emitting units 20C to 20E are arranged on the side surface F2, and the light emitting units 20F and 20G are arranged on the side surface F4.

The light emitting units 20A and 20B and the light emitting units 20F and 20G face each other. The light receiving unit 20R is substantially opposed to the light emitting unit 20C. The light emitting units 10A, 10B, and 10C are arranged alternately with the light emitting units 20A and 20B on the side surface F3. The light receiving units 10D, 10E, and 10F are arranged alternately with the light emitting units 20F and 20G on the side surface F4.

In FIG. 1, the first detection unit 10 and the second detection unit 20 are electrically connected to the control unit 100 and the fire receiver 110, but the electrical wiring is not shown for simplification of the drawings. doing.

As the two cameras 30, for example, a thermal camera can be used, but another type of camera may be used. Each camera 30 can rotate and move up and down. Finally, the camera 30 confirms the position of the smoke SK and the flame FL of the fire FR in the fire detection area 260 in the large indoor space RM, that is, the position of the fire point, and sends the image pickup information FN of the fire point to the control unit 100. send. The light receiving units 10D, 10E, and 10F are electrically connected to the fire receiver 110. The light receiving unit 20R is electrically connected to the fire receiver 110 via the control unit 100.

The operation panel 120 performs a water discharge operation of the water discharge gun 130 in response to a command from the control unit 100. The water discharge gun 130 can rotate left and right or move up and down to discharge water for fire extinguishing at any position in the large indoor space RM.

<First detection unit 10>
First, a specific example of the first detection unit 10 will be described with reference to FIGS. 1 and 2. FIG. 2 shows the light emitting units 10A, 10B, 10C and the light receiving units 10D, 10E, 10F of the first detection unit 10 shown in FIG.

As the first detection unit 10, a photoelectric separation type sensor can be preferably used. Each of the light emitting units 10A, 10B, and 10C of the first detection unit 10 is also referred to as a light transmitting unit and emits infrared light 250. The direction of the optical path (optical axis) of the infrared light 250 is parallel to the X-axis direction. Each of the light receiving units 10D, 10E, and 10F of the first detection unit 10 receives infrared light 250 emitted from the opposing light emitting units 10A, 10B, and 10C. When the infrared light 250 passes through the smoke SK, the amount of light of the infrared light 250 is attenuated by the smoke SK. Each of the light receiving units 10D, 10E, and 10F detects the smoke SK by changing the amount of light received by the infrared light 250 when the smoke SK blocks the light path. When the light receiving units 10D, 10E, and 10F receive the infrared light 250, a light receiving signal M corresponding to the amount of light received by the infrared light 250 is sent to the fire receiver 110 and the control unit 100.

As the first detection unit 10, for example, a photoelectric separation type sensor (NSL103EX) manufactured by Nippon Dry-Chemical Co., Ltd. can be adopted. This instrument has passed the Japanese national certification and can be installed at the installation location specified by the Fire Service Act. In addition, since this unit emits only infrared light, it can reduce power consumption and only needs to be connected to the receiver 110. Since it does not require an external power supply, construction can be simplified and installation can be performed at low cost.

The nominal monitoring distance D between the light emitting units 10A, 10B, 10C shown in FIG. 2 and the light receiving units 10D, 10E, 10F facing the light emitting units 10A, 10B, 10C, respectively, is set in a monitoring range of, for example, 5 m to 100 m. The photoelectric separation type sensor is suitable for detecting smoke SK generated in a wide space of a large indoor space RM. By adopting a synchronous method for the light emitting operation of the light emitting units 10A, 10B, 10C and the light receiving operation of the light receiving units 10D, 10E, 10F, the control unit 100 is due to a single external factor such as a flash as compared with the asynchronous method. It is possible to prevent the occurrence of non-fire alarms.

In FIG. 1, the optical paths of the light emitting units 10A, 10B, and 10C are parallel in the X-axis direction, but they may not be parallel depending on the installation environment, and the fire detection area 260 is formed by the intersection with the second detection unit 20. I just need to be able to identify it.

<Second detection unit 20>
Next, a specific example of the second detection unit 20 will be described with reference to FIGS. 1 and 3. FIG. 3 shows an example of a plurality of light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G of the second detection unit 20 shown in FIG. 1 and one light receiving unit 20R.

The light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G simultaneously generate infrared light 200 and ultraviolet light 210. One light receiving unit 20R receives infrared light 200 and ultraviolet light 210 from each light emitting unit 20A, 20B, 20C, 20D, 20E, 20F, 20G. As the second detection unit 20, for example, an open area smoke imaging detection device (OSID: Open-Area Smoke Imaging Detection) manufactured by Extralis can be adopted.

As shown in FIG. 1, the directions in which the infrared light 200 and the ultraviolet light 210 are emitted from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G toward one light receiving unit 20R are , The X-axis direction is the direction of intersection. For example, the directions in which the infrared light 200 and the ultraviolet light 210 are irradiated from the light emitting unit 20C toward the light receiving unit 20R are substantially parallel to the Y-axis direction. The direction of irradiation from each of the other light emitting units 20A, 20B, 20D, 20E, 20F, 20G toward one light receiving unit 20R is a direction intersecting the X-axis direction and with respect to the Y-axis direction. Each has a different angle.

If the second detection unit 20 has at least one light receiving unit 20R, it can receive light from a plurality of light emitting units 20A and 20G, so that the second detection unit 20 can be used inexpensively for a long period of time.

As a structural example of the light receiving unit 20R, the light receiving unit 20R has one light receiving sensor, and this one light receiving sensor can be used from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G. The incoming infrared light 200 and ultraviolet light 210 are received in a time-division manner with a time lag. As a result, the infrared light 200 and the ultraviolet light 210 from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be received in a timely manner, so that even if there are a plurality of light emitting units 20A to 20G. , At least one light receiving unit 20R is required. At this time, if the emission timing of the infrared light and the ultraviolet light of the light emitting unit and the reception timing of the light receiving sensor are synchronized, more accurate detection becomes possible.

Alternatively, as another structural example of the light receiving unit 20R, the light receiving unit 20R optically separates the infrared light 200 and the ultraviolet light 210 from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G. It has a light receiving window for receiving light. As a result, the infrared light 200 and the ultraviolet light 210 that simultaneously come from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be optically separated and received. As a result, the infrared light 200 and the ultraviolet light 210 from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be optically separated and simultaneously received, so that there are a plurality of light emitting units 20A to 20G. However, only one light receiving unit 20R is required.

Alternatively, as another structural example of the light receiving unit 20R, the light receiving unit 20R emits infrared light 200 and ultraviolet light 210 from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G, and infrared light. An image sensor in which pixels having a filter that transmits light and pixels having a filter that transmits ultraviolet light are alternately integrated receive optical light separately. As a result, the infrared light 200 and the ultraviolet light 210 that simultaneously come from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be optically separated and received. As a result, the infrared light 200 and the ultraviolet light 210 from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be optically separated and simultaneously received, so that there are a plurality of light emitting units 20A to 20G. However, only one light receiving unit 20R is required. At this time, the filter may be a dielectric multilayer film or a dye filter.

Alternatively, as another structural example of the light receiving unit 20R, the light receiving unit 20R transmits infrared light 200 and ultraviolet light 210 from each light emitting unit 20A, 20B, 20C, 20D, 20E, 20F, 20G to infrared light. The spread angle and the spread angle of the ultraviolet light are made different, and the light is received by different pixels of the image sensor. For example, when the spread angle of infrared light is small and the spread angle of ultraviolet light is larger than that of infrared light, the image sensor receives both infrared light and ultraviolet light at the pixels near the center of the light emitting part, but the center. Peripheral pixels in the vicinity receive ultraviolet light. The amount of infrared light can be calculated by subtracting the amount of light received by the peripheral pixels from the pixel near the center. Thereby, the light amounts of the infrared light 200 and the ultraviolet light 210 simultaneously coming from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be separated. As a result, the infrared light 200 and the ultraviolet light 210 from the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G can be separately received at the same time, so that even if there are a plurality of light emitting units 20A to 20G, at least Only one light receiving unit 20R is required.

As illustrated in FIG. 3A, when smoke SK is generated between the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G of the second detection unit 20 and one light receiving unit 20R, The infrared light 200 passes through the smoke SK and is received by the light receiving unit 20R, but the ultraviolet light 210 is scattered by the smoke SK and does not pass through, and is not received by the light receiving unit 20R, or is scattered and passes while being attenuated. The light receiving unit 20R receives light. In other words, in the light receiving unit 20R, the infrared ray 200 can receive a strong light, and the ultraviolet ray 210 can receive a weak light or cannot receive a light at all. As a result, the control unit 100 can recognize by receiving the detection signal T from the light receiving unit 20R and can determine that smoke SK is generated.

3 (B) and 3 (C) show comparative examples. As illustrated in FIG. 3B, it is assumed that dust DT, not smoke, is present between the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G of the second detection unit 20 and the light receiving unit 20R. , Infrared light 200 and ultraviolet light 210 are both attenuated by the dust DT. Therefore, the attenuated infrared light 200 and the attenuated ultraviolet light 210 are received by the light receiving unit 20R. As a result, the control unit 100 can determine that dust DT is generated by receiving the detection signal T1 from the light receiving unit 20R.

Further, as illustrated in FIG. 3C, an object OB such as metal is formed between the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G of the second detection unit 20 and the light receiving unit 20R. If there is, the infrared light 200 and the ultraviolet light 210 are both shielded and do not pass through at all, so that the infrared light 200 and the ultraviolet light 210 are not received at all by the light receiving unit 20R. As a result, the control unit 100 can determine that there is an object OB by receiving the detection signal T2 from the light receiving unit 20R.

As described above, when smoke SK is generated between the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G of the second detection unit 20 and the light receiving unit 20R, the second detection unit 20 shown in FIG. 1 The light receiving unit 20R can notify the fire receiver 110 that smoke SK has been detected through the control unit 100.

FIG. 4 shows an example in which a plurality of sets of fire point detection devices 1 are arranged in the Z-axis direction, which is the height direction, in the indoor large space RM of a large-scale facility having a high ceiling height.

As illustrated in FIG. 4, the plurality of fire point detection devices 1 are arranged at arbitrary positions in the indoor large space RM of a large-scale facility having a high ceiling height with respect to the Z-axis direction, which is the height direction. There is. The first detection unit 10 and the second detection unit 20 of the set of fire point detection devices 1 are arranged in a large indoor space RM. Further, the first detection unit 10 and the second detection unit 20 of another set of fire point detection devices 1 may be arranged in a large indoor space RM.

As a result, the plurality of fire point detection devices 1 can be installed in the indoor large space RM at intervals related to the required Z-axis direction as necessary depending on the size of the indoor large space RM and the use of the large-scale facility. Can be placed in. Therefore, even in a large indoor space RM with a large ceiling height, the fire point can be reliably detected by detecting the position of the smoke SK, which leads to a quick fire extinguishing activity.

<Example of fire point detection operation of fire point detection device 1>
Next, an example of the fire point detection operation of 1 of the above-mentioned fire point detection device will be described with reference to FIGS. 1, 5, and 6.

FIG. 5 is a flow chart showing an example of a fire point detection operation of the fire point detection device 1. FIG. 6 is a front view showing an example of smoke FR smoke SK and flame FL.

As shown in FIG. 6, the fire point refers to the position of the flame FL below the place where the fire FR is generated and where the smoke SK of the fire FR is generated.

In step S1 of FIG. 5, when smoke FR smoke SK and flame FL as shown in FIG. 6 are generated, the first detection unit 10 detects the smoke SK first, and then the second detection unit 20 detects the smoke SK. If it is detected, the process proceeds to step S2.

In step S2, in the X-axis direction shown in FIG. 1, the first detection unit 10 detects the position of the smoke SK to detect a fire. That is, as shown in FIG. 1, when, for example, a fire FR occurs in the fire detection area 260 near the side surface F2 and the side surface F4, for example, smoke SK emits infrared light 250 emitted by the light emitting unit 10C of the first detection unit 10. Block. Therefore, in the light receiving unit 10F facing the light emitting unit 10C, the light receiving amount of the infrared light 250 changes, so that the position of the smoke SK (the position in the Y-axis direction) is detected. When the light receiving unit 10F receives the infrared light 250, the infrared light 250 sends a light receiving signal M corresponding to the reduced light receiving amount to the fire receiver 110 and the control unit 100. As a result, the first detection unit 10 detects the fire.

Further, in step S3 shown in FIG. 5, in the Y-axis direction, the second detection unit 20 detects smoke SK to issue a fire alarm. That is, as shown in FIG. 1, for example, when the infrared light 200 and the ultraviolet light 210 emitted by the light emitting unit 20F reach the smoke SK, the infrared light 200 passes through the smoke SK and is received by the light receiving unit 20R. The light 210 is shielded by the smoke SK and does not receive light to the light receiving unit 20R, or is scattered and attenuated by the smoke SK and receives light by the light receiving unit 20R. The light receiving unit 20R sends the detection signal T to the fire receiver 110 and the control unit 100. As a result, the fire receiver 110 issues a fire alarm.

Next, in step S4 of FIG. 5, the control unit 100 shown in FIG. 1 received the light receiving signal M from the light receiving unit 10F of the first detection unit 10, and the detection signal from the light receiving unit 20R of the second detection unit 20. After receiving T, the control unit 100 determines that the position of the smoke FR smoke SK shown in FIG. 1 is the fire detection area 260 located near the side surface F2 and the side surface F4, and determines that the fire FR smoke. It is determined that there is a flame FL, which is a fire point, at a position below the SK.

Then, in step S5, the control unit 100 causes the camera 30 to rotate and move up and down, detects the fire FR as an image toward the fire FR in the fire detection area 260, and controls the image pickup information FN to the control unit 100. The control unit 100 finally confirms the position of the fire point by sending to.

In step S6, the control unit 100 gives a command to the operation panel 120 of FIG. 1 based on the obtained accurate position of the fire point, and turns and moves the water discharge gun 130 up and down to move the water discharge gun 130 in the direction of the water discharge gun 130. To extinguish the fire FR by accurately discharging water at a predetermined pressure toward the smoke SK and the flame FL of the fire FR in the fire detection area 260. As a result, the water discharge gun 130 can extinguish the fire FR accurately and quickly with a small amount of water without waste, so that the fire FR can be extinguished quickly. If there is a discrepancy between the detection result of the smoke FR position by the first detection unit 10 and the detection result of the smoke FR position by the second detection unit 20, the control unit 100 gives a fire alarm and the camera 30 notifies the fire. After confirming the fire FR, the direction of the water discharge gun 130 is controlled to extinguish the fire FR.

On the other hand, steps S7 and S8 shown in FIG. 5 show a case where the steps S2 and S3 are detected in the reverse procedure. When the second detection unit 20 detects the smoke SK first and then the first detection unit 20 detects the smoke SK, the process proceeds from step S1 to step S7.

In step S7, in the Y-axis direction, the second detection unit 20 detects smoke SK to issue a fire alarm. That is, as shown in FIG. 1, for example, when the infrared light 200 and the ultraviolet light 210 emitted by the light emitting unit 20F reach the smoke SK, the infrared light 200 passes through the smoke SK and is received by the light receiving unit 20R. The light 210 is shielded by the smoke SK and does not receive light to the light receiving unit 20R, or is scattered and attenuated by the smoke SK and receives light by the light receiving unit 20R. The light receiving unit 20R sends the detection signal T to the fire receiver 110 and the control unit 100. As a result, the fire receiver 110 issues a fire alarm.

Next, in step S8, in the X-axis direction shown in FIG. 1, the first detection unit 10 detects the position of the smoke SK to detect the fire. That is, as shown in FIG. 1, when, for example, a fire FR occurs in the fire detection area 260 near the side surface F2 and the side surface F4, for example, smoke SK emits infrared light 250 emitted by the light emitting unit 10C of the first detection unit 10. Block. Therefore, in the light receiving unit 10F facing the light emitting unit 10C, the light receiving amount of the infrared light 250 changes, so that the position of the smoke SK (the position in the Y-axis direction) is detected. When the light receiving unit 10F receives the infrared light 250, the infrared light 250 sends a light receiving signal M corresponding to the reduced light receiving amount to the fire receiver 110 and the control unit 100. As a result, the first detection unit 10 detects the fire.

By following step S8, step S4, step S5, and step S6 described above, in step S6, the control unit 100 commands the operation panel 120 of FIG. 1 based on the obtained accurate position of the fire point. By turning and moving the water discharge gun 130 up and down, water is accurately discharged toward the smoke SK and flame FL of the fire FR in the fire detection area 260 to extinguish the fire. As a result, the water discharge gun 130 can extinguish the fire FR accurately and quickly with a small amount of water, so that the fire extinguishing activity can be performed quickly.

In FIG. 5, when the camera 30 is not arranged, the water discharge gun 130 can extinguish the fire FR accurately and quickly with a small amount of water by moving from step S4 to step S6.

The fire point detection device 1 of the first embodiment of the present invention described above detects the position of the smoke SK of the fire FR in the X-axis direction and the Y-axis direction in a large indoor space RM such as a large-scale facility. , The exact position of the fire point can be detected.

Next, another embodiment of the present invention will be described in sequence. When the elements of another embodiment of the present invention described below are substantially the same as the corresponding elements of the first embodiment described above, the same reference numerals are given and the description thereof will be omitted.

(Second Embodiment)
FIG. 7 shows a second embodiment of the present invention.

The fire point detection device 1B of the second embodiment shown in FIG. 7 is different from the fire point detection device 1 of the first embodiment shown in FIG. 1 in that the configuration of the first detection unit 10 is the configuration of the second detection unit 20. The point is that the first detection unit 10'is replaced with. The second detection unit 20 includes light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G, and a plurality of light receiving units 20R as light receiving units. The first detection unit 10'has a light emitting unit 20A', 20B', 20C', 20D', 20E', 20F', 20G', and a light receiving unit 20T as a plurality of light receiving units. The two light receiving units 20R and 20T are arranged apart from each other on the side surface F1.

The light emitting units 20A, 20B, 20C, 20D, 20E, 20F, 20G are directed toward the light receiving unit 20R, and the light emitting units 20A', 20B', 20C', 20D', 20E', 20F', 20G'are directed toward the light receiving unit 20R. Infrared light 200 and ultraviolet light 210 are generated toward 20T, respectively. As a result, the light receiving units 20R and 20T allow the control unit 100 to detect the position of the smoke SK of the fire FR using infrared light 200 and ultraviolet light 210. At this time, the arrangement of the light receiving units 20R and 20T can be summarized on the side surface F1, the configuration of the fire point detection device 1B can be simplified, the construction can be simplified, and the installation can be performed at low cost.

Depending on the situation of the installation location, the light emitting units 20G'and 20F' may be installed on the wall surfaces F2 and F3, and the light receiving unit 20T may be installed on the wall surface F4. In this case, since the intersection of the emitted light of each infrared light 200 and the ultraviolet light 210 can be brought close to a right angle, the accuracy of the smoke detection position can be improved.

Further, in FIG. 7, the light emitting units of the first detection unit 10'and the second detection unit 20 are installed at the same location, but the light emitting units may be installed at different positions, not limited to the description in FIG.

(Third Embodiment)
FIG. 8 shows a third embodiment of the present invention.

The fire point detection device 1A of the third embodiment shown in FIG. 8 is different from the fire point detection device 1 of the first embodiment shown in FIG. 1 in that the configuration of the second detection unit 20 is the configuration of the first detection unit 10. The number of arrangements of the plurality of light emitting units and the number of arrangements of the light receiving units are increased in that the second detection unit 20'is replaced with.

The first detection unit 10 has a plurality of light emitting units 10G, 10H, 10I as the second detection unit 20'in addition to the plurality of light emitting units 10A, 10B, 10C, and the plurality of light receiving units 10D, 10E, 10F. In addition, it has a plurality of light receiving units 10J, 10K, 10L as the second detection unit 20'.

In the arrangement example shown in FIG. 8, the added light emitting units 10G, 10H, 10I are arranged on the side surface F2, and the added light receiving units 10J, 10K, 10L are arranged on the side surface F1. The added light emitting units 10G, 10H, 10I and the added light receiving units 10J, 10K, 10L are arranged so as to face each other. The infrared light 250 emitted by the added light emitting units 10G, 10H, and 10I is parallel to the Y-axis direction, and is orthogonal to the infrared light 250 emitted by the light emitting units 10A, 10B, and 10C. As a result, the number of infrared lights 250 parallel to the Y-axis direction is provided, and the receiver 110 detects the position of the smoke SK of the fire FR in the direction intersecting the X-axis direction using the infrared light 250. it can.

The first embodiment, the second embodiment, and the third embodiment can be combined.

As described above, the fire point detection device 1 (1A, 1B) of the embodiment of the present invention detects the smoke SK generated by the fire generated in the indoor space to detect the fire point which is the place where the fire occurs. To detect.

The fire point detection device 1 (1A, 1B) irradiates light (for example, infrared light 250) along the X-axis direction as a specific direction in an indoor space (for example, a large space RM) to specify a specific direction. The intersection direction (in the Y-axis direction and the Y-axis direction) where the first detection unit 10 for detecting the position of the smoke SK in the X-axis direction as the direction intersects with the X-axis direction as a specific direction in the indoor space. Irradiating light (for example, infrared light 200 and ultraviolet light 210) along a direction that is almost parallel or intersecting at a sharp angle (angle less than 90 degrees) in the Y-axis direction, and the direction of intersection. A second detection unit 20 for detecting the position of the smoke SK is provided.

As a result, the first detection unit 10 irradiates the smoke SK with light 250 along the X-axis direction as a specific direction in the large space RM as an indoor space, and the X-axis direction as a specific direction. Detects the position of smoke SK. Moreover, the second detection unit 20 smokes light (for example, infrared light 200 and ultraviolet light 210) along the intersecting direction intersecting the X-axis direction as a specific direction in the large space RM as an indoor space. The position of the smoke SK in the intersecting direction is detected by irradiating the SK.

Therefore, it is possible to identify that the position of the smoke SK is at the intersection of the crossing direction in which the specific direction and the X-axis direction as the specific direction intersect, so that a fire can occur in a large indoor space such as a large-scale facility. The position of the fire point, which is the place where the smoke occurs, can be detected accurately.

As illustrated in FIG. 2, the first detection unit 10 is arranged in a large space RM as an indoor space, and has a plurality of light emitting units 10A, 10B, 10C that generate infrared light 250 as light, and indoors. A plurality of light receiving units 10D, 10E, 10F arranged in a large space RM as a space, facing each light emitting unit 10A, 10B, 10C, and receiving infrared light 250 from the light emitting units 10A, 10B, 10C. Has.

As a result, the light emitting units 10A, 10B, and 10C of the first detection unit 10 irradiate the smoke SK with the infrared light 250, so that the infrared light 250 received by the light receiving units 10D, 10E, and 10F is attenuated. Therefore, the light receiving units 10A, 10B, and 10C of the first detection unit 10 can detect the position of the smoke SK in the X-axis direction as a specific direction by detecting the attenuation of the received infrared light 250.

Further, as illustrated in FIG. 3, the second detection unit 20 is arranged in a large space RM as an indoor space, and a plurality of light emitting units 20A to 20G that generate infrared light 200 and ultraviolet light 210 as light are generated. And at least one light receiving unit 20R which is arranged in a large space RM as an indoor space and receives infrared light 200 and ultraviolet light 210 from each light emitting unit 20A to 20G.

As a result, the light emitting units 20A to 20G of the second detection unit 20 expose the infrared light 200 and the ultraviolet light 210 to the smoke SK, and the light receiving unit 20R of the second detection unit 20 is the infrared light passing through the smoke SK. The light 200 can be received, but the ultraviolet light 210 blocked by the smoke SK is not received or the ultraviolet light is attenuated. As a result, the position of the smoke SK in the crossing direction intersecting the X-axis direction as a specific direction can be detected without being affected by disturbance such as dust.

Since the first detection unit 10 and the second detection unit 20 use different types of sensors, the system becomes a redundant system against failures of sensors and communication lines, and the system stability is high.

As illustrated in FIG. 4, the pair of the first detection unit 10 and the second detection unit 20 is arranged in a large space RM as an indoor space. The first detection unit 10 and the second detection unit 20, or the light emitting unit and the light receiving unit of each detection unit may be arranged at different height directions in a large space RM as an indoor space.

As a result, the first detection unit 10 and the second detection unit 20 are arranged at different height directions in the indoor space, so that even in a large indoor space of a large-scale facility, the large space can be used. At each height position, the position of the smoke SK can be specified for both the X-axis direction as a specific direction and the intersection direction where the X-axis direction as a specific direction intersects. The position of can be detected accurately.

As illustrated in FIG. 7, the second detection unit 20 is arranged in a large space RM as an indoor space, and includes a plurality of light emitting units 20A to 20G that generate infrared light 200 and ultraviolet light 210 as light. It is arranged in a large space RM as an indoor space, and has an infrared light 200 from each light emitting unit 20A to 20G and a light receiving unit 20R that receives ultraviolet light 210. The first detection unit 10'is arranged in a large space RM as an indoor space, and is arranged in an indoor space with a plurality of light emitting units 20A' to 20G' that generate infrared light 200 and ultraviolet light 210 as light. Another light receiving unit 20T that receives the infrared light 200 and the ultraviolet light 210 in the intersecting direction intersecting the Y-axis direction as a specific direction is added.

As a result, in addition to the Y-axis direction as a specific direction, the light receiving unit 20T of the first detection unit 10'detects the attenuation of the received infrared light 200 and the ultraviolet light 210 also in the crossing direction. , The position of the smoke SK in both the X-axis direction and the crossing direction as a specific direction can be accurately detected.

The fire point detection device of this example is composed of at least two light receiving parts for a large number of light emitting parts, and the configuration including the light receiving parts can be simplified, the installation can be simplified, and the system can be simplified.

As illustrated in FIG. 8, the first detection unit 10 is the second detection unit 20'which is arranged in an indoor space and generates infrared light 250 in an intersecting direction intersecting the X-axis direction as a specific direction. A plurality of light emitting units 10G, 10H, 10I and a light receiving unit of the second detection unit 20'arranged in an indoor space and receiving infrared light 250 from the light emitting units 10G, 10H, 10I of the second detection unit 20', respectively. 10J, 10K, 10L are added.

As a result, in addition to the X-axis direction as a specific direction, the light receiving units 10J, 10K, and 10L of the second detection unit 20'detect the attenuation of the received infrared light 250 also in the crossing direction. , The position of the smoke SK in both the X-axis direction and the crossing direction as a specific direction can be accurately detected.

Therefore, by detecting the attenuation of infrared light not only in a specific direction but also in the crossing direction, the position of smoke in both the specific direction and the crossing direction can be detected by a detection unit having the same configuration. .. The fire point detector of this example is composed only of a normal photoelectric separation type sensor, and the system can be simplified.

Although the present invention has been described above with reference to embodiments, each embodiment is an example, and the scope of the invention described in the claims can be variously changed without departing from the gist of the invention. ..

For example, in the illustrated example, a plurality of cameras 130 such as a thermal camera for final confirmation are used, but the present invention is not limited to this, and other types of cameras such as a visible camera may be used, or one camera may be used. Camera 130 may be used.

In the illustrated example, the light emitting units 20A, 20B, 20C, 20D, 20E, 20F, and 20G of the second detection unit 20 generate both infrared light 200 and ultraviolet light 210, but are not limited to this. Only 200 may be generated, or only the ultraviolet light 210 may be generated. Further, even if a bandpass filter made of a dielectric multilayer film of infrared light and ultraviolet light is provided on the light receiving surfaces of the light receiving units 20R and 20T to suppress and block light in the visible light region, the influence of ambient light can be suppressed. good.

The number and position of the light emitting unit and the light receiving unit of the first detection unit 10 and the number and position of the light emitting unit and the light receiving unit of the second detection unit 20 are not limited to the illustrated examples, and the size of the indoor space is large. It can be arbitrarily selected according to the shape of the sheath, the use of the indoor space, and the like.

In the arrangement example of the fire point detection device 1 shown in FIG. 4, two or more sets of fire point detection devices 1 can be arranged at intervals along the horizontal direction and the height direction in a large indoor space RM. ..

1 Fire point detection device 1A Fire point detection device 1B Fire point detection device 10 1st detection unit 10A, 10B, 10C, 10G, 10H, 10I Light emitting unit 10D, 10E, 10F, 10J, 10K, 10L of the 1st detection unit 1 Light receiving part of detection unit 20 2nd detection part 20A to 20G Light emitting part of 2nd detection part 20R, 20T Light receiving part of 2nd detection part 200 Infrared light 210 Ultraviolet light 250 Infrared light 260 Fire detection area RM Large indoor Space FR Fire SK Smoke FL Flame

Claims (4)

It is a fire point detection device that detects the fire point that is the location of the fire by detecting the smoke generated by the fire that occurs in the indoor space.
A first detection unit that irradiates light along a specific direction in the indoor space to detect the position of the smoke in the specific direction.
A second detection unit that irradiates light along an intersection direction that intersects the specific direction in the indoor space to detect the position of the smoke in the intersection direction, and a second detection unit.
With
The first detection unit
A plurality of light emitting units arranged in the indoor space to generate infrared light as the light, and
A plurality of light receiving units arranged in the indoor space, facing each of the plurality of light emitting units, and receiving the infrared light from the light emitting unit, and a plurality of light receiving units.
Have,
The second detection unit
A plurality of light emitting units arranged in the indoor space to generate infrared light and ultraviolet light as the light, and
A light receiving unit arranged in the indoor space and receiving the infrared light and the ultraviolet light from the plurality of light emitting units, and a light receiving unit.
A fire point detection device characterized by having. It is a fire point detection device that detects the fire point that is the location of the fire by detecting the smoke generated by the fire that occurs in the indoor space.
A first detection unit that irradiates light along a specific direction in the indoor space to detect the position of the smoke in the specific direction.
A second detection unit that irradiates light along an intersection direction that intersects the specific direction in the indoor space to detect the position of the smoke in the intersection direction, and a second detection unit.
With
The first detection unit
A plurality of light emitting units arranged in the indoor space to generate infrared light and ultraviolet light as the light, and
A light receiving unit arranged in the indoor space and receiving the infrared light and the ultraviolet light from the plurality of light emitting units, and a light receiving unit.
Have,
The second detection unit
A plurality of light emitting units arranged in the indoor space to generate infrared light as the light, and
A plurality of light receiving units arranged in the indoor space, facing each of the plurality of light emitting units, and receiving the infrared light from the light emitting unit, and a plurality of light receiving units.
A fire point detection device characterized by having. The fire point detection device according to claim 1 or 2,
A control unit that controls the water discharge gun based on the position information of the fire point specified by the fire point detection device, and
Firefighting equipment characterized by having. When there is a discrepancy between the detection result by the first detection unit and the detection result by the second detection unit, the control unit determines the water discharge direction of the water discharge gun based on the confirmation result by the camera installed indoors. The firefighting equipment according to claim 3.

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