KR20180059612A - Image apparatus for fire detection - Google Patents

Abstract

The present invention relates to an image apparatus for fire detection. According to an embodiment of the present invention, the image apparatus for fire detection includes: an RGB camera for detecting an RGB image of an object; a thermal imaging camera for detecting a thermal image for the object; a radar for measuring a distance and a direction to the object; a controller for controlling operations of the RGB camera, the thermal imaging camera, and the radar; and a housing which encloses the RGB camera, the thermal imaging camera, the radar, and the controller to protect the same from a heat source. The housing includes a transparent window for securing a view of the RGB camera and the thermal imaging camera on one side of the housing facing a viewing direction of the RGB camera and the thermal imaging camera. It is possible to provide an image apparatus with heat and fire resistance.

Description

[0001] The present invention relates to an image apparatus for fire detection,

And more particularly to a fire detection apparatus for extending a visible range in a fire environment.

Disasters can be classified into natural disasters and human disasters depending on the cause of the disasters. The frequency of natural disasters caused by global climate change is increasing, and the risk of human disasters such as urbanization is increasing along with changes in social structure In fact. The damage caused by such natural disasters and human disasters is rapidly increasing. In particular, except for road traffic, the damage caused by fire and property damage are serious.

The damage caused by the fire is caused by the inhalation and burn of the fire smoke, and the sensor, the fire suppression and the fire assistant robot are being developed in order to overcome these causes. Various sensors are used to detect fire in smoke environment and to recognize internal environment are the most important equipment for fire suppression. Since the fire smoke may vary depending on the type of combustible material, the temperature of the smoke, and the density of the smoke, it is urgent to develop a sensor capable of overcoming various fire situations.

Most of the sensors for detecting the fire scene have wavelengths that can be detected and there is no problem in the normal environment, but it is difficult to guarantee the performance in extreme environments such as fire smoke, dust, and fog. In other words, there are a variety of sensors operating in the microwave band from the ultra-short wavelength X-ray to the long wavelength, but the development of a sensor that always responds to unpredictable characteristics of the fire smoke is insufficient.

Firefighting crew members are often delayed in their on-site input and search for the needy, due to the difficulty of securing visibility due to the initial deep smoke fire at various disaster sites accompanied by flames. Especially, if the visibility is not secured due to the heavy fire smoke, it is difficult for the victims to find the victim, and the fire brigade loses its position and threatens the life of the rescuer as well as the victim.

Therefore, heat resistance and fire resistance sensors are required to solve such problems. Protecting the sensors included in robots and machinery is one of the most important issues in the harsh outside environment, especially in extreme high temperature environment. Recently, electric system such as Peltier device is used, but these systems have advantages of small size and light weight But it has a disadvantage that it is difficult to use when the external environment is 100 ° C or more as well as the energy efficiency is low due to the high price, high power consumption, and the like. In addition, in order to protect the sensor in a high temperature environment, a water-cooled or air-cooled cooling system may be mounted on the sensor. However, since the water-cooled type or air-cooled type system is installed, the manufacturing cost of the sensor for detecting fire is increased and the volume is increased have.

SUMMARY OF THE INVENTION The present invention is directed to a fire detection apparatus having fire resistance and fire resistance capable of being utilized in a fire environment in a fire environment and capable of optimizing visualization performance.

According to an aspect of the present invention, there is provided an image sensing apparatus for detecting fire, comprising: an RGB camera for detecting an RGB image of an object; A thermal imaging camera for detecting a thermal image for the object; A radar for measuring distance and direction to the object; A controller for controlling operations of the RGB camera, the thermal imaging camera, and the radar; And a housing that surrounds the RGB camera, the thermal image camera, the radar, and the controller to protect the controller from a heat source, the housing being configured to cover the RGB camera and the thermal image camera, And a transparent window for securing a view of the thermal imaging camera.

The housing includes an inner housing member and an outer housing member, and includes a heat insulating material between the inner housing member and the outer housing member.

The heat insulating material includes at least one of an airgel insulation material and a vacuum insulation material.

A blow fan mounted on the outside of the housing and rotating to generate an air flow; A fan cover spaced a predetermined distance in front of the blow fan to protect the blow fan from the heat source; And a motor mounted inside the housing to drive the blow fan.

And the blow fan is coated with an airgel heat insulating material.

The housing further includes a window frame member for guiding the air flow to a rim of the transparent window.

In order to allow the air flow to advance toward the front of the transparent window, the window frame member further includes an air passage slit through which the air flow generated by the blow fan can be introduced.

According to the present invention, the image processing sensor of the fire scene is protected by the housing having the heat resistance and the refractory function, so that the image device having the effective performance even in the fire scene can be realized.

In addition, by allowing the airflow to be directed toward the front of the imaging device, it is possible to secure a sufficient visible distance for image acquisition at the fire scene.

1 is an exploded perspective view of a fire detection imaging apparatus according to an embodiment of the present invention.
2A and 2B are enlarged perspective views illustrating an RGB camera, a thermal image camera, a radar, and a controller among the fire detection imaging apparatus shown in FIG.
3A is a perspective view illustrating the overall appearance of the housing of the fire detection imaging apparatus shown in FIG.
3B is a side cross-sectional view of the fire detection imaging apparatus shown in FIG.
4 is a front view of the fire detection apparatus shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the following embodiments. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an," and "the" include plural forms unless the context clearly dictates otherwise. Also, " comprise " and / or " comprising " as used herein specify the presence of stated shapes, numbers, steps, operations, elements, elements, and / , But does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups. As used herein, the term " and / or " includes any and all combinations of any of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, regions and / or regions, it should be understood that these elements, components, regions, layers and / Do. These terms do not imply any particular order, top, bottom, or top row, and are used only to distinguish one member, region, or region from another member, region, or region. Thus, the first member, region or region described below may refer to a second member, region or region without departing from the teachings of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, embodiments of the present invention should not be construed as limited to any particular shape of the regions illustrated herein, but should include variations in shape resulting from, for example, manufacture.

1 is an exploded perspective view of a fire detection imaging apparatus according to an embodiment of the present invention. Referring to FIG. 1, a fire detection imaging apparatus includes an RGB camera 100, a thermal imaging camera 110, a radar 120, a controller 130, and a housing. The detailed contents of each component shown in FIG. 1 will be described later with reference to the drawings.

2A and 2B are enlarged perspective views illustrating an RGB camera 100, a thermal image camera 110, a radar 120, and a controller 130 in the fire detection imaging apparatus shown in FIG.

The RGB camera 100 detects an RGB image for an object. That is, the RGB camera 100 is a camera that expresses an RGB image of an object based on a combination of R, G, and B reference colors. To this end, the RGB camera 100 may include an image sensor that recognizes the R, G, and B reference colors for the object. The RGB camera 100 may also include an image processing processor for processing an RGB image according to a combination of R, G, and B reference colors recognized by the image sensor, Can be detected.

The RGB camera 100 of the present invention can improve the RGB image of an object (for example, combustible material) considering the degree of saturation of the image sensor. In addition, the RGB camera 100 may reflect the smoke reduction algorithm in the RGB image. Also, the RGB camera 100 may reflect a time-based smoke reduction algorithm that takes into account the amount of image motion.

The thermal camera 110 detects a thermal image for the object. The thermal camera 110 may be at least one, and preferably two or more stereo cameras. The thermal camera 110 may be a thermal image preprocessing technique, such as a thermal image dynamic range compression technique and a thermal image contrast enhancement algorithm technique for a high temperature environment. In addition, the thermal camera 110 can be applied to a depth extraction technique of a thermal stereo module or a disparity extraction technique for a high temperature / high temperature environment.

The radar 120 measures the distance and direction to the object. The radar 120 can measure the direction and the distance of the object by measuring the time until the time of receiving the reflected wave by using the directivity of the radio wave. For this purpose, the radar 120 may include a transmitter, a receiver, an antenna, and a transceiver.

The controller 130 controls the operation of the RGB camera 100, the thermal imaging camera 110, and the radar 120. The controller 130 can control the synchronization of data received from the RGB camera 100, the thermal imaging camera 110, and the radar 120. [ The controller 130 may store the DB data of the RGB image and the thermal image in a memory (not shown) for quantifying the visual distance according to the temperature / smoke through the numerical simulation of the fire simulation test. In addition, the controller 130 may store radar measurement distance and accuracy DB data in a memory. In addition, the controller 130 may apply a spatial calibration algorithm that reflects the lens distortion characteristics of the RGB camera 100 or the thermal imaging camera 110. That is, the controller 130 may reflect the stereo camera calibration algorithm of the outermost weighting technique that reflects the lens characteristics.

In addition, the controller 130 may apply a time synchronization technique of an RGB camera, a thermal camera, or a radar. In other words, the controller 130 can integrate time characteristics of individual sensors through application of a time stamp and a synchronization technique, thereby realizing time synchronization. To this end, the controller 130 may configure the integration of the integrated data between the sensors and the protocol.

In addition, the controller 130 may employ advanced radar filtering techniques. That is, it may reflect the motion-amount-based time-laminar filter construction technique of the radar 120, and may operate by reflecting the radar object minimum segment narrowing improvement algorithm based on the object characteristic. The data for the radar 120 can be filtered.

In addition, the controller 130 may perform a data correction operation reflecting the propagation characteristics and the indoor spatial characteristics of the radar 120. That is, the controller 130 can correct the data reflecting the fire environment-based propagation reflection characteristic according to the object (for example, combustible material). In addition, the controller 130 can apply the technology for improving the accuracy of the textureless area stereo matching in order to improve the accuracy of the thermal camera and speed up the depth extraction, and realize the stereo matching speeding through the parallel processing.

FIG. 3A is a perspective view illustrating the overall appearance of the housing 200 of the fire detection imaging apparatus shown in FIG. 1, and FIG. 3B is a side cross-sectional view of the fire detection imaging apparatus shown in FIG.

The housing 200 surrounds the RGB camera 100, the thermal imaging camera 110, the radar 120, and the controller 130 for protection from a heat source. 1, the housing 200 includes an outer housing member 202, a thermal insulator 204, an inner housing member 206, an inner housing front cover 208, a lower plate 210, a plate support 212, The spacer 214, the middle plate 216, the outer housing rear cover 218, the rear thermal insulator 220, the inner housing rear cover 222, the top plate 224, the transparent window 226, 228, and a window insulator 230.

3B, the housing 200 includes an outer housing member 202 and an inner housing member 206 and includes a heat insulating material 204 between the outer housing member 202 and the inner housing member 206 . The inner housing member 206 is a plate-shaped member formed on the inner side to surround the RGB camera 100, the thermal image camera 110, the radar 120, and the controller 130. On the other hand, the outer housing member 202 is a plate-shaped member formed on the outer side to surround the inner housing member 206. The outer housing member 202 and the inner housing member 206 may be made of a material having high heat resistance and fire resistance, and may be made of, for example, a high heat resistant polymer material, a metal material, or the like.

The heat insulating material 204 may include airgel insulation, vacuum insulation, and the like. The airgel insulation has a pore structure of airgel-like airgel, which is composed of mostly gas, so that the pore size is smaller than the average air movement radius, so that the thermal diffusion due to convection can be minimized. Therefore, the airgel thermal insulator can be used as a material having extremely low thermal conductivity. Vacuum insulation consists of insulation material of fumed silica in the core and sheath material to maintain vacuum in the outside of the core. Vacuum heat insulators are vacuum-treated inside and can have excellent heat insulation performance because they have very low thermal conductivity.

The housing 200 includes a transparent window 226 for securing the view of the RGB camera 100 and the thermal camera 110 to one side of the housing 200 facing the RGB camera 100 and the thermal imaging camera 110 in the viewing direction, . ≪ / RTI >

The transparent window 226 may be a glass material or a synthetic material having excellent heat resistance and fire resistance. The transparent window 226 may be provided in the housing 200 at a position spaced apart from the lenses of the RGB camera 100 and the thermal camera 110. The RGB camera 100 and the thermal imaging camera 110 can take a front view through a transparent window. The shape of the transparent window 226 may be rectangular, circular, or elliptical. However, the shape of the transparent window 226 is merely exemplary, but is not limited thereto.

The rim of the transparent window 226 may be provided with a window frame member 320. The window frame member 320 may protrude outwardly of the housing 200 from the rim of the transparent window 226. The window frame member 320 may guide the air flow generated by the blow fan 310 driven by the motor 300 to be described below toward the forward direction of the transparent window 226. [

The motor 300 is mounted inside the housing 200 to drive the blow fan 310. The motor 300 is operated by being supplied with power, and the provided power may include a DC power source or an AC power source. In addition, the motor 300 may use a power source provided through a battery, or may be operated by receiving a commercial power source (100 [V] or 220 [V]).

The blow fan 310 is mounted on the outside of the housing 200 and rotates to generate an air flow. At this time, the blow fan 310 may be coated with airgel insulation to protect it from a heat source.

The fan cover 330 is spaced a predetermined distance from the front of the blow fan 310 to protect the blow fan from the heat source. The fan cover 330 has a shape that surrounds the blow fan 310, and the side surface of the fan cover 330 may have a structure that is opened for the inflow of air from the outside. Further, one side (for example, lower surface) of the side surface of the fan cover 330 has a structure in contact with the side surface of the window frame member 320. At this time, the window frame member 320 may include an air passage slit 322 so that the air flow generated by the blow fan 310 can be introduced.

4 is a front view of the fire detection apparatus shown in FIG. 4, the airflow generated by the rotation of the blow fan 310 is obstructed by the inner surface of the fan cover 330 to move in a downward direction of the fan cover 330, The air flows in the forward direction of the window frame member 320 through the air passage slit 322 as the lower portion has a structure that communicates with the air passage slit 322 of the window frame member 320. [ Air curtains are formed due to the forward air flow of the window frame member 320 so that the field of view of the fire detection imaging device can be ensured even in the presence of the fire at the fire scene.

As described above, a specific embodiment of the fire detection apparatus according to the embodiment of the present invention has been described. However, it is apparent that various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be construed as being limited to the embodiments described, but should be determined by equivalents to the appended claims, as well as the following claims. It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: RGB camera
110: Thermal camera
120: Radar
130: controller
200: Housing

Claims (7)

An RGB camera for detecting an RGB image of an object;
A thermal imaging camera for detecting a thermal image for the object;
A radar for measuring distance and direction to the object;
A controller for controlling operations of the RGB camera, the thermal imaging camera, and the radar; And
And a housing enclosing the RGB camera, the thermal imaging camera, the radar, and the controller to protect them from a heat source,
Wherein the housing includes a transparent window for securing a view of the RGB camera and the thermal image camera on one side of the housing facing the viewing direction of the RGB camera and the thermal image camera. The method according to claim 1,
The housing includes:
An imaging device for fire detection, comprising an inner housing member and an outer housing member, the insulation member including an insulation between the inner housing member and the outer housing member. 3. The method of claim 2,
Wherein the thermal insulation material comprises at least one of an airgel insulation material and a vacuum insulation material. The method according to claim 1,
A blow fan mounted on the outside of the housing and rotating to generate an air flow;
A fan cover spaced a predetermined distance in front of the blow fan to protect the blow fan from the heat source; And
And a motor mounted inside the housing to drive the blow fan. 5. The method of claim 4,
Wherein the blow fan is coated with an airgel insulation material. 5. The method of claim 4,
Wherein the housing further comprises a window frame member for directing the air flow to a rim of the transparent window. The method according to claim 6,
Wherein the window frame member further comprises an air passage slit through which the air flow generated by the blow fan can be introduced, so that the air flow advances toward the front of the transparent window .

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