JP4370660B2 - Fire monitoring system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire monitoring system, and more particularly to a fire monitoring system that senses smoke generated by a fire.
[0002]
[Prior art]
As is well known, fire monitoring has been done visually by fire guards or observers climbing up the monitoring tower until several decades ago. In this case, it is difficult to detect smoke at night, delaying dispatch, winter monitoring is difficult, fire guards or observers climbing the monitoring tower cannot participate in simultaneous dispatch, and there are problems such as requiring more staff. It was.
[0003]
Therefore, in recent years, there has been a rise in the number of buildings and the spread of telephones, and a method of waiting for a fire report has been adopted instead of visual monitoring.
[0004]
[Problems to be solved by the invention]
However, the conventional fire monitoring as described above has the following problems.
Late night fires are often delayed in detection, and in addition, reports are often delayed due to burnt telephone lines. For this reason, there is a problem that initial fire extinguishment cannot be performed for the fire that has occurred, resulting in total or fire spread.
[0005]
The present invention has been made in consideration of the above points, and an object of the present invention is to provide a fire monitoring system capable of early detection even for a fire that occurred at midnight.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following configuration.
The fire monitoring system according to claim 1, wherein a laser radar that rotates and scans detection light in the atmosphere to detect information on smoke in the atmosphere, and an image display of the information on smoke in synchronization with the rotation of the laser radar. A display bar that rotates in synchronization with the rotation of the laser radar and emits light based on the smoke information, and a display that fluoresces in response to the light emission of the display bar. And a board .
[0007]
Therefore, in the fire monitoring system of the present invention, when the detection light is irradiated to the smoke generated by the fire by rotational scanning, the laser radar receives the scattered light (or reflected light), so that information about the smoke (for example, The distance to the smoke based on the round trip time of the detection light and the smoke substance based on the wavelength of the detection light) can be obtained. The image display unit displays the smoke information at the rotational position where the laser radar detects smoke, thereby enabling early detection of smoke generation, that is, fire. Further, in the fire monitoring system of the present invention, the display bar emits light at the rotational position when the laser radar detects information related to smoke, and the display board fluoresces at the position where the display bar emits light. Therefore, even if the light emission of the display bar is instantaneous, the information on the smoke displayed on the display board is continuously displayed for a predetermined time by the afterglow, and the information on the smoke can be easily confirmed. it can. In addition, when smoke generated in one fire due to turbulence is detected at multiple locations, the smoke detected by the turbulence fluctuates when the display bar rotates and the smoke image is displayed again. Can determine the location of the fire.
[0010]
The fire monitoring system according to claim 2 is the fire monitoring system according to claim 1 , wherein a map based on the position of the laser radar is drawn on the display board.
[0011]
Therefore, in the fire monitoring system of the present invention, the position (address) where the smoke is generated can be specified.
[0012]
Fire monitoring system according to claim 3, in claim 1 or 2 fire monitoring system, wherein the image display device, and a wind vane for displaying wind direction of the air, and anemometer for displaying wind speeds of the air Is provided.
[0013]
Therefore, in the fire monitoring system of the present invention, when the fire occurrence position differs from the smoke detection position due to strong wind or the like, the fire occurrence position can be estimated from the smoke detection position, the wind direction, and the wind speed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the fire monitoring system of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a configuration diagram of a fire monitoring system according to the present invention. The fire monitoring system 1 includes a laser radar 2, an image display device 3, and a control device 4 that controls driving of the laser radar 2 and the image display device 3.
[0015]
The laser radar 2 emits laser light (detection light) into the atmosphere and receives scattered light (or reflected light) from the measurement target to measure the distance to the measurement target. The rotation drive of the motor 5 is transmitted through the gears 6 and 7 so that it can rotate around the vertical axis. The drive motor 5 is provided with a pulse generator 8 that generates a pulse signal corresponding to the rotation of the drive motor 5.
[0016]
Further, the laser radar 2 is connected to the control device 4 via a slip ring 9 so as to be capable of rotational scanning all around the vertical axis. As a laser light source, a semiconductor laser such as GaAs or a gas laser such as He—Ne can be used.
[0017]
The image display device 3 displays information detected by the laser radar 2 as an image, and has a configuration mainly including a bar-shaped display bar 10 and a substantially square-shaped display plate 11. The display bar 10 is held by a slip ring 12 so as to be rotatable along the display plate 11, and the rotation shaft 14 thereof is disposed at substantially the center of the display plate 11. The display bar 10 is connected to the control device 4 via the slip ring 12.
[0018]
Further, the length of the display bar 10 is set to about half the width of the display plate 11, and a plurality of light emitting diodes 13 are provided on the surface facing the display plate 11 along the length direction. The rotational drive of the rotary shaft 14 is transmitted from the pulse motor 17 via gears 15 and 16. The pulse motor 17 is connected to the pulse generator 8 on the laser radar 2 side, and the display bar 10 circulates in synchronization with the laser radar 2 based on the pulse signal of the pulse generator 8.
[0019]
The display board 11 is formed of a transparent glass material or the like, and a fluorescent coating is applied to the surface thereof. Further, a transparent film on which the map around the installation position of the laser radar 2 and the distance from the laser radar 2 is detachably attached is attached to the surface of the display plate 11 so that the position of the laser radar 2 can be changed. It has become. As shown in FIG. 2, the display board 11 is provided with an anemometer 18 indicating the wind direction of the atmosphere at the time of rotational scanning by the laser radar 2 and an anemometer 19 indicating the wind speed.
[0020]
The control device 4 has a laser generator, controls the driving of the laser radar 2, and controls the light emission to the light emitting diode 13 of the display bar 10 based on the information detected by the laser radar 2.
[0021]
The operation of the fire monitoring system 1 configured as described above will be described below.
Here, for example, the laser radar 2 is installed on the roof of a fire department, and the image display device 3 is installed indoors. The laser radar 2 scans the atmosphere infinitely at 4 rpm, for example, and receives the scattered light from the smoke accompanying the fire, thereby measuring the distance from the round-trip time of the laser light to the smoke and the smoke distribution state. To do. And the control apparatus 4 makes the light emitting diode 13 corresponding to the distance to smoke and smoke distribution in the display stick | rod 10 light-emit. Here, since the laser radar 2 and the display bar 10 are synchronously rotated by the drive of the pulse generator 8 and the pulse motor 17, the light emitting diode 13 can emit light in the direction of smoke detected by the laser radar 2. . If there is a time lag from the detection of the laser radar 2 to the light emission of the light emitting diode 13, the display bar 10 may be rotated with a delay corresponding to the time lag.
[0022]
Due to the light emission of the light emitting diode 13, the display board 11 fluoresces at the light emitting position, and as shown in FIG. 2, the smoke S is continuously displayed as an afterimage for a predetermined time on the map corresponding to the detected position. Thereby, the place where the smoke S is generated, that is, the place where the fire is generated can be specified.
[0023]
Here, as shown in FIG. 3 (a) due to turbulence or the like, when the smoke S partially protrudes at the scanning position R of the laser beam at the positions S1 and S2 separated from the fire point, FIG. 3 (b). As shown, three smoke S, S1, and S2 are displayed on the display board 11. In this case, although the displayed smoke S1 and S2 may be misidentified as other fires, the smoke S1 and S2 detected due to turbulence moves (or scan position R) as time passes. When the laser radar 2 and the display rod 10 are rotated to display smoke next time, the smoke S is displayed again, and the display position moves (or disappears) for the smoke S1 and S2. As a result, the smoke S can be discriminated from S1 and S2.
[0024]
Further, as shown in FIG. 4A due to strong wind or the like, when the smoke S is flown, the fire spot F and the smoke S at the scanning position R are separated from each other. In this case, as shown in FIG. 4B, smoke S is displayed on the display board 11 at a position separated from the actual fire point F by the distance L, and an error occurs. Therefore, it is preferable to make the scanning position R as low as possible to reduce the error. However, when the scanning position R cannot be lowered due to the existence of a high-rise building or the like, the wind direction and the wind speed displayed on the anemometer 18 and anemometer 19 are used. It is possible to estimate the true fire point F. In this case, the configuration may be such that the wind direction and the wind speed are automatically input to the control device 4 and the position at which the light emitting diode 13 emits light is corrected based on the wind direction and the wind speed.
[0025]
In the fire monitoring system of the present embodiment, smoke is detected by the laser radar 2 and an image is displayed by the image display device 3, so that even when a fire occurs at midnight, it can be detected early in the room. For this reason, it is possible to start fire extinguishing without waiting for a fire report, and it is possible to prevent total fire and fire spread. Further, in the fire monitoring system of the present embodiment, the laser radar 2 and the display bar 10 are connected to the control device 4 via the slip rings 9 and 12, respectively, so that infinite rotation is possible, and smoke is emitted in all directions. Detection can be performed.
[0026]
Furthermore, in this embodiment, since the display panel 11 is fluorescently coated, the position of the smoke can be easily confirmed by the afterglow even if the light emission of the light emitting diode 13 is instantaneous, and the turbulence Even if smoke generated in one fire is detected at multiple places, the afterimage of the smoke changes, making it easier to identify the fire spot. Further, in the present embodiment, since the anemometer 18 and the anemometer 19 are provided in the image display device 3, the fire spot is easily estimated even if the fire spot and the smoke detection spot are different due to strong winds or the like. be able to. Moreover, since the map is drawn on the display board 11, the smoke generation position, that is, the fire generation position can be easily specified, and the fire point can be quickly reached.
[0027]
In the above embodiment, when a high-rise building or the like impedes scanning in a specific direction, a cam is provided in the rotating part of the laser radar 2 and the elevation angle is changed in a specific direction, so that Can be rotated.
[0028]
In addition to the above, the light source of the laser radar 2 in the above embodiment is Nd: YAG or Nd glass laser, the second harmonic of these giant pulses, Q-switch ruby laser, N ₂ laser. A dye laser or the like can be used. It is also possible to detect smoke components by changing not only the distance to the smoke but also the wavelength of the laser beam. Further, the laser radar 2 can be installed on the moving vehicle 20 as shown in FIG. In this case, the fire can be easily monitored in the vehicle 20 even in a place where fire monitoring cannot be performed at all times. Furthermore, it is also possible to install the image display device 3 in the fire station and send the result detected by the laser radar 2 of the moving vehicle 20 to a remote fire station via a telephone line or the like.
[0029]
【The invention's effect】
As described above, the fire monitoring system according to claim 1 has a configuration in which the laser radar rotates and detects information related to smoke, and the image display device displays the information related to smoke in synchronization with the laser radar. ing.
With this fire monitoring system, even if a fire breaks out at midnight, it can be detected early in the room, so that it can be dispatched without waiting for a fire report and the initial fire extinguishment can be prevented. And it becomes possible to protect assets and property.
[0030]
In the fire monitoring system according to the second aspect, the image display device includes a display bar that emits light based on smoke information, and a display plate that fluoresces when the display bar emits light.
As a result, in this fire monitoring system, the position of the smoke can be easily confirmed by the afterglow even if the display bar emits light instantaneously, and the smoke generated by one fire due to turbulence etc. Even if it is detected, the effect of facilitating the identification of the fire point is obtained because the afterimage of the smoke position fluctuates.
[0031]
The fire monitoring system according to claim 3 is configured such that a map is drawn on the display board.
Thereby, in this fire monitoring system, the smoke generation position, that is, the fire generation position can be easily specified, and the effect that the fire point can be reached quickly is obtained.
[0032]
The fire monitoring system according to claim 4 is configured such that an anemometer and an anemometer are provided in the image display device.
Thereby, in this fire monitoring system, even if the fire spot and the smoke detection spot are different due to strong winds or the like, the fire spot can be easily estimated.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of the present invention, and is an external perspective view of a fire monitoring system including a laser radar and an image display device.
FIG. 2 is an external perspective view of a display board, an anemometer, and an anemometer that form the image display apparatus.
FIG. 3A is a front view in which smoke generated in a fire protrudes to a scanning position due to turbulence, and FIG. 3B is a distribution diagram of smoke displayed on the display board at this time.
4A is a front view in which smoke generated in a fire is swept away by a strong wind, and FIG. 4B is a distribution diagram of smoke displayed on the display board at this time.
FIG. 5 is a perspective view showing another embodiment of the present invention, in which a laser radar is installed in a moving vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fire monitoring system 2 Laser radar 3 Image display apparatus 10 Display bar 11 Display board 18 Anemometer 19 Anemometer

Claims (3)

A laser radar that rotates and scans detection light in the atmosphere to detect information about smoke in the atmosphere;
An image display device that displays an image of the smoke-related information in synchronization with the rotation of the laser radar ,
The image display device includes a display bar that rotates in synchronization with the rotation of the laser radar and emits light based on the information of the smoke, and a display plate that fluoresces according to light emission of the display bar. Fire monitoring system. 2. The fire monitoring system according to claim 1, wherein a map based on the position of the laser radar is drawn on the display board . The fire monitoring system according to claim 1 or 2, wherein the image display device is provided with an anemometer that displays the wind direction of the atmosphere and an anemometer that displays the wind speed of the atmosphere. Fire monitoring system.

Images