CN104096334B - Fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof - Google Patents
Fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof Download PDFInfo
- Publication number
- CN104096334B CN104096334B CN201410343238.4A CN201410343238A CN104096334B CN 104096334 B CN104096334 B CN 104096334B CN 201410343238 A CN201410343238 A CN 201410343238A CN 104096334 B CN104096334 B CN 104096334B
- Authority
- CN
- China
- Prior art keywords
- jet
- drop point
- water monitor
- fire water
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The open a kind of fire water monitor jet fiber waveguide drop point brightness enhancing structures of the present invention and brightness enhancement thereof, it is applied to fire-fighting domain.Wherein fire water monitor jet fiber waveguide drop point brightness enhancement is by making the drop point of jet particularly jet brighter relative to surrounding, can be in fire control system based on machine vision, increase the gray scale of hydrographic(al) map picture and background image, improve the accuracy of identification of water channel, so that the image procossing of jet drop point is big for convenience.It is to requiring that fire water monitor jet drop point brightness is significantly greater than surrounding, there is significant application value the application scenario being easy to Computer Image Processing or naked eyes identification, including have the indoor large space fire water monitor of automatic control function or Non-follow control function, field large space fire water monitor at night, need work in the case of night or light are bad maritime patrol ship law enforcement water cannon and various police anti-riot water cannons etc..
Description
Technical field:
The present invention relates to a kind of fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof, its application
In fire-fighting domain.
Background technology:
In November, 2002, the model of SKLFS (Chinese University of Science and Technology) is tieed up clear academician et al. and is proposed
A kind of fire remotely controlled for large space is searched for and fire extinguishing system automatically, it uses one piece of ccd video camera and adopts
Collection photo site, then by computer vision analysis process realize monitoring and fire extinguishing (Tao Chen, Hongyong Yuan*,
Guofeng Su,Weicheng Fan.An automatic fire searching and suppressionsystem for large
spaces[J].Fire Safety Journal 39(2004)297–307).In January, 2010, Nanjing Aero-Space University large
Scholar postgraduate Chen Jing proposes a kind of fire water monitor automatic positioning method based on image procossing, and the method is by fluidics diagram
The process in real time of picture judges the gap of jet drop point and burning things which may cause a fire disaster point, and adjusts according to the two relative position in the picture
The spray angle of water cannon, with reach optimal extinguishing effect (Chen Jing, Zhao Min. the segmentation of fire water monitor jet path image
With recognizer research. electronics technology, 2010 (3)).2012, foreign study scholar ElhamMahdipour,
ChitraDadkhah has looked back 2000-2010 and has carried out this fire detection technology within 10 years, sums up computer vision
There is in auto fire-detection very important effect (ElhamMahdipour, ChitraDadkhah.Automatic fire
detection based on soft computingtechniques:review from 2000to 2010.Springer
Science+Business Media B.V.2012)。
The method utilizing computer vision can realize the accurate control of fire water monitor water-drop point, especially by image procossing
Method, the when of considering ignition point position and jet drop point site, by water-drop point with target relative to position
Identify, adjust control angle and the control parameter of fire water monitor further, it is possible to achieve fire water monitor is accurately put out a fire, equally
Explosion prevention function of enforcing the law accurately can also be realized.In the middle of this class system, fire water monitor water-drop point position quickly effectively
Identify and directly influence being precisely controlled of fire water monitor.Owing to water itself is colourless transparent liquid, with the aberration of background often
Less obvious, particularly under the occasion that light is bad, it is difficult to the most effectively identify.After adding its scattering, shape is changeable,
Therefore, in the fire control system using computer vision, being identified as in order to fire water monitor is accurately controlled of correlation fall point
One of difficult point of system.If able to by technological means strengthen jet in the picture with the aberration of background, be beneficial to jet
Identification with jet drop point.
Summary of the invention:
The present invention provides a kind of fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof, and it improves
The recognizability of jet water channel particularly jet drop point, provides guarantee for fire-fighting system closed loop control.
The present invention adopts the following technical scheme that a kind of fire water monitor jet fiber waveguide drop point brightness enhancing structures, and it includes peace
Encapsulation is located on fire fighting hydraulic giant and is positioned at the jet blast ring near spout, equipped with some in described jet blast ring
LED, the outer of described jet blast ring protrude from fire water monitor spout and and spout between form a return flume.
Further, offering bellmouth on the shower nozzle of described fire water monitor, the one end open of described bellmouth is at shower nozzle
On inwall, other end opening is on shower nozzle outer wall, and described bellmouth does not contacts with LED.
Further, at described jet blast ring outer, it is provided with drying pin.
Further, near described fire water monitor spout, offer inclined hole, the one end open of described inclined hole on shower nozzle inwall,
Other end opening is on shower nozzle outer wall, and in described inclined hole, embedment has optical fiber, described LED to be right against on shower nozzle outer wall
Inclined hole opening.
Further, described some LED are arranged in jet blast ring inner ring, and its be high-brightness light emitting diode or
Color light-emitting diode.
Further, described jet blast ring uses engagement thread to be fastened on the shower nozzle of fire water monitor, or uses taper
Mode is stuck on the shower nozzle of fire water monitor and fastens with trip bolt.
The material of the most described jet blast ring is rustless steel, copper or aluminium alloy.
The present invention also adopts the following technical scheme that the brightness of a kind of fire water monitor jet fiber waveguide drop point brightness enhancing structures increases
Strong method, it comprises the steps:
(1). during the ejection of fire water monitor jet, the cavity air between spout and jet blast ring is carried over, and jet sheds
Foam is filled in cavity, forms cascade between jet blast ring extension and jet；
(2). lightening LED lamp, major part light enters jet along cascade, the waveguide of fluidic vectoring thrust arrives jet
Drop point, forms bright drop point water mark, and the minute bubbles of jet, case of bending make part light scatter when jet is propagated
Come so that the water column that fluidic vectoring thrust is the brightest；
(3). utilize video camera or industrial camera as sensor, by Computer Image Processing and machine vision skill
Art, identifies the jet drop point of fire water monitor, analyzes the position deviation between jet drop point and ignition point, revises fire water monitor
Spray angle, it is achieved put out a fire accurately.
There is advantages that
(1). the jet fiber waveguide drop point brightness enhancement that the present invention proposes so that the jet of fire water monitor becomes
With light-source brightness and the bright hot spot of Color control, Computer Image Processing or some complicated rings of naked eyes identification can be facilitated
Fire water monitor jet drop point in the case of border or light more weak (such as night)；
(2). by installing jet blast ring at fire fighting hydraulic giant, it is also possible to combine and bury optical fiber underground, by suitably
Light angle so that optical fiber occurs total reflection phenomenon the most in the jet, some non-ideal factors of jet light path shine into
Scattering the feature of jet can also be made to become apparent from, be conducive to jet path and jet pick-up point are accurately identified；
(3). utilize computer image processing technology, be acquired processing, due to jet to the image at jet and fire point
In with light path, jet path brightness with surrounding contrast substantially, and has a bright hot spot at jet end,
It is assured that jet drop point site by simple image procossing；
(4). jet blast ring is easy for installation, the hydrodynamic characteristic of jet will not be brought any impact；
(5). for complicated background, it is also possible to by changing the color of light source, make jet and background be distinguished.
Accompanying drawing illustrates:
The refraction schematic diagram of Fig. 1 light.
Fig. 2 is the jet blast ring schematic diagram being mounted with LED, and wherein Fig. 2 (a) is right view, and Fig. 2 (b) is
A-A to profile.
Fig. 3 is the jet blast ring schematic diagram of shower nozzle band bellmouth, and wherein Fig. 3 (a) is front view, and Fig. 3 (b) is
A-A to profile, Fig. 3 (c) is right view, Fig. 3 (d) be B-B to profile.
Fig. 4 is the jet blast ring schematic diagram of band drying pin, and wherein Fig. 4 (a) is front view, and Fig. 4 (b) is A-A
To profile, Fig. 4 (c) is right view, Fig. 4 (d) be B-B to profile.
Fig. 5 is the fluid jet nozzle schematic diagram of band optical fiber, and wherein Fig. 5 (a) is front view, and Fig. 5 (b) is right view,
Fig. 5 (c) be A-A to profile.
Fig. 6 is that light occurs to be totally reflected to form hot spot schematic diagram at end in the jet.
Fig. 7 is that light is refracted in air via jet.
Fig. 8 is that fire water monitor current branching diagram occurs.
Wherein:
1-jet blast ring；2-LED lamp；3-return flume；4-bellmouth；5-drying pin；6-optical fiber.
Detailed description of the invention:
Total reflection: when light is entered optically thinner medium by optically denser medium, normal to be left reflects, as shown in Figure 1.Work as angle of incidence
When α increases to certain situation (θ), fringence is carried out along surface, i.e. refraction angle is 90 °, and this incidence angle θ is the most critical
Angle.If angle of incidence is more than critical angle, then without refraction, whole light all return optically denser medium, and this phenomenon is referred to as total reflection.
Assuming that optically denser medium refractive index is n1, optically thinner medium refractive index is n2, then critical angle is calculated as follows:
Sin θ=n2/n1
θ=arc sin (n2/n1)
Particularly working as n2=1, during n1=1.3, light is from water-jet to critical angle θ=55.9 ° during air, and spy is not in critical angle herein
Different explanation refers both to this angle.
When there is total reflection in light, it is necessary to 2 conditions below meeting:
1. light incides its interface with optically thinner medium from optically denser medium；
2. angle of incidence is more than or equal to critical angle.
Fire water monitor jet fiber waveguide drop point brightness enhancing structures of the present invention is by the becket near fire water monitor spout
The sheathed jet blast ring 1 of upper installation, equipped with some LED 2 in this jet blast ring 1, outside jet blast ring 1
Along protruding slightly the spout of fire water monitor, and and spout between form a return flume 3, jet blast ring 1 will not offset
Anti-water cannon jet has any impact, as shown in Figure 2,3, 4, the radiation direction of wherein LED 2 injection and shower nozzle water
Stream vertical direction φ is more than critical angle.
The most some LED 2 are arranged in jet blast ring inner ring, and it is high-brightness light emitting diode or colorful light-emitting two
Pole is managed.Jet blast ring can use engagement thread to be fastened on the spout of fire water monitor, it would however also be possible to employ pyramidal fashion card
On the spout of fire water monitor, then fasten with trip bolt.The material of jet blast ring can be rustless steel, copper or aluminum
Alloy etc..
The outer of jet blast ring to protrude spout slightly, but can not touch jet when jet sprays, this be in order to
Ensure that the jet blast ring hydrodynamic characteristic not on jet brings any impact.Spout and jet blast ring during jet ejection
Between cavity air be carried over, this foam that jet is shed is filled in cavity, in jet blast ring extension and penetrating
Forming cascade between stream, this is to ensure that jet becomes the key of fiber waveguide.Bellmouth can be beaten on the shower nozzle of fire water monitor
4, such as Fig. 3, during jet ejection, under the effect of the pressure, there is water poured in by bellmouth and be full of return flume, it is ensured that light
Source enters jet by the water of return flume.Can also process drying pin 5 on jet blast ring, such as Fig. 4, jet sprays
Time, drying pin just contacts with jet outer, and the water scraped goes out interruption-forming cascade at jet blast ring.
When fire water monitor has jet to spray, jet blast ring forms in return flume negative pressure, by using bellmouth or dialling
Liquid drugs injection so that form cascade between return flume outlet and jet.When LED is lighted, major part light just can edge
This cascade and enter jet, the waveguide of fluidic vectoring thrust arrive the drop point of jet, form bright drop point water mark.
As it is shown in figure 5, by opening inclined hole near spray outlet, inclined hole one end open is at shower nozzle inwall, other end opening
At shower nozzle outer wall, being embedded in inclined hole by optical fiber, two ends polish, and after the installation of jet blast ring, LED is just to shower nozzle outer wall
Fiber entrance, light can enter jet by optical fiber.
Jet should keep column structure not break up as far as possible, and jet column is structure-preserved the best, jet drop point brightening effect
The best.LED lighting mode can all be lighted, and can partly light, and can light continuously, can light with pulse；
The LED that can utilize colour changes the color of jet, makes jet and background be distinguished.Arteries and veins can be used if desired
The working method of punching makes jet have higher brightness in moment, does not the most affect the identification to fire point.
When light is propagated along with jet, owing to the refractive index of water and air is different, there is the reasons such as bubble in jet water column,
Can form a jet path having obvious luminance difference with surrounding:
(1). owing to the refractive index (about 1.3) of water is more than the refractive index (about 1) of air, LED is launched
Light can occur refraction effect at the intersection of water Yu air, and when angle of incidence reaches critical angle, light is totally reflected, this
Sample one, light path together can penetrate along with current, when jet is close to time complete, and total reflection will pass through whole jet, therefore
Around being less subject to the impact of illumination, the major part of incident illumination penetrates in jet pick-up point, thus near the drop point of jet
Form a water mark having the biggest luminance difference with surrounding, as shown in Figure 6, it is easy at naked eyes or computer picture
Reason identifies this position, and this provides conveniently for controlling fire water monitor.
(2). during jet ejection, it is arranged on the light that the LED at shower nozzle sends and does not ensures that all of light can be sent out
Raw total reflection effect, wherein some light can directly reflect, as shown in Figure 7.Additionally, due to jet path has
Certain radian, occurs the light being totally reflected also due to be unsatisfactory for the condition of critical angle and directly roll over during transmission
Shoot out.
(3). the water quality ejected not is the purest, and the inside can be mingled with other materials or form blister, light
Scattering phenomenon can occur after running into these materials or blister in transmitting procedure, be then passed in surrounding.
(4). jet, in transmitting procedure, is not preferable column shape, still has some current in marginal portion and divides
, the light of fractional transmission can scatter out as shown in Figure 8.
In sum, due to the relation between jet blast ring and fire water monitor spout, jet, on the one hand by major part light
Constraint in the jet, makes ambient background be less subject to illumination effect, and the state such as the minute bubbles of jet, bending makes again part
Light scatters out when jet is propagated so that the water column that fluidic vectoring thrust is the brightest, facilitates the identification of jet；At jet
Pick-up point, the light of total reflection here penetrates, and forms a very prominent speck, and jet and surrounding are obvious
Distinguishing, this is for automatically controlling or Artificial Control fire water monitor is the most highly beneficial.
In the control system of fire water monitor, it is possible to use video camera or industrial camera are as sensor, by calculating
Machine image procossing and machine vision technique, identify the jet drop point of the fire water monitor that feature is clearly demarcated easily, analyzes jet and falls
Position deviation between point and ignition point, revises the spray angle of fire water monitor, it is achieved put out a fire accurately.
The jet fiber waveguide drop point brightness enhancement that the present invention proposes, is not that simple light illuminates jet, but allows
The drop point of jet particularly jet is brighter relative to surrounding, can be at fire control system based on machine vision
In, increasing the gray scale of hydrographic(al) map picture and background image, improve the accuracy of identification of water channel, this allows for the image of jet drop point
Process the most for convenience.This technology can also be used for fire department in the wild, in marine fire-fighting and law-enforcing work.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, some improvement can also be made under the premise without departing from the principles of the invention, these improvement also should be regarded as the present invention's
Protection domain.
Claims (8)
1. a fire water monitor jet fiber waveguide drop point brightness enhancing structures, it is characterised in that: include that installation is sheathed on fire-fighting
On water cannon shower nozzle and be positioned at jet blast ring (1) near spout, equipped with some LED in described jet blast ring (1)
Lamp (2), the outer of described jet blast ring (1) protrude from fire water monitor spout and and spout between form a backwater
Groove (3).
2. fire water monitor jet fiber waveguide drop point brightness enhancing structures as claimed in claim 1, it is characterised in that: in institute
State and on the shower nozzle of fire water monitor, offer bellmouth (4), the one end open of described bellmouth (4) on shower nozzle inwall,
Other end opening is on shower nozzle outer wall, and described bellmouth (4) does not contacts with LED (2).
3. fire water monitor jet fiber waveguide drop point brightness enhancing structures as claimed in claim 1 or 2, it is characterised in that:
It is provided with drying pin (5) at described jet blast ring (1) outer.
4. fire water monitor jet fiber waveguide drop point brightness enhancing structures as claimed in claim 1, it is characterised in that: described
Offering inclined hole near fire water monitor spout, the one end open of described inclined hole is on shower nozzle inwall, and other end opening is at shower nozzle
On outer wall, in described inclined hole, embedment has optical fiber (6), described LED (2) to be right against the inclined hole opening on shower nozzle outer wall.
5. fire water monitor jet fiber waveguide drop point brightness enhancing structures as claimed in claim 4, it is characterised in that: described
Some LED (2) are arranged in jet blast ring (1) inner ring, and it is high-brightness light emitting diode or colorful light-emitting
Diode.
6. fire water monitor jet fiber waveguide drop point brightness enhancing structures as claimed in claim 5, it is characterised in that: described
Jet blast ring (1) uses engagement thread to be fastened on the shower nozzle of fire water monitor, or uses pyramidal fashion to be stuck in fire-fighting
Fasten with trip bolt again on the shower nozzle of water cannon.
7. fire water monitor jet fiber waveguide drop point brightness enhancing structures as claimed in claim 6, it is characterised in that: described
The material of jet blast ring (1) is rustless steel, copper or aluminium alloy.
8. the brightness enhancement of a fire water monitor jet fiber waveguide drop point brightness enhancing structures, it is characterised in that: include
Following steps:
(1). during the ejection of fire water monitor jet, the cavity air between spout and jet blast ring is carried over, and jet sheds
Foam is filled in cavity, forms cascade between jet blast ring extension and jet；
(2). lightening LED lamp, major part light enters jet along cascade, the waveguide of fluidic vectoring thrust arrives jet
Drop point, forms bright drop point water mark, and the minute bubbles of jet, case of bending make part light scatter when jet is propagated
Come so that the water column that fluidic vectoring thrust is the brightest；
(3). utilize video camera or industrial camera as sensor, by Computer Image Processing and machine vision skill
Art, identifies the jet drop point of fire water monitor, analyzes the position deviation between jet drop point and ignition point, revises fire water monitor
Spray angle, it is achieved put out a fire accurately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343238.4A CN104096334B (en) | 2014-07-17 | 2014-07-17 | Fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343238.4A CN104096334B (en) | 2014-07-17 | 2014-07-17 | Fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104096334A CN104096334A (en) | 2014-10-15 |
| CN104096334B true CN104096334B (en) | 2016-08-24 |
Family
ID=51665119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410343238.4A Expired - Fee Related CN104096334B (en) | 2014-07-17 | 2014-07-17 | Fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104096334B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973231B (en) * | 2015-06-25 | 2017-06-30 | 南京航空航天大学 | Water cannon jet water channel infra-red radiation strengthening system and its course of work |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2431344A (en) * | 2005-10-19 | 2007-04-25 | Kidde Ip Holdings Ltd | Fire extinguishers |
| CN2843534Y (en) * | 2005-12-13 | 2006-12-06 | 江苏大学 | Light fireproof water syringe |
| CN101574567B (en) * | 2009-06-08 | 2011-08-31 | 南京航空航天大学 | Computer vision technique based method and system for detecting and extinguishing fire disaster intelligently |
| CN101574566B (en) * | 2009-06-08 | 2011-07-27 | 南京航空航天大学 | Monocular vision technique based fire monitor control method for adjusting relative positions of fire point and water-drop point |
| CN201894790U (en) * | 2010-11-25 | 2011-07-13 | 西安新竹防灾救生设备有限公司 | Firefighting device with position indicating function |
| JP5705628B2 (en) * | 2011-04-18 | 2015-04-22 | 能美防災株式会社 | Fire extinguishing equipment |
| CN103768748B (en) * | 2013-12-27 | 2016-05-04 | 合肥科大立安安全技术股份有限公司 | Automatically the jet angle of pitch computational methods of track and localization jet extinguishing device |
-
2014
- 2014-07-17 CN CN201410343238.4A patent/CN104096334B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104096334A (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10846890B2 (en) | Weapon targeting system | |
| CN104096334B (en) | Fire water monitor jet fiber waveguide drop point brightness enhancing structures and brightness enhancement thereof | |
| CN106793428B (en) | A kind of deep-sea means of illumination and system based on non homogen field | |
| JPS6069498A (en) | Sighting system | |
| US8550649B2 (en) | Stereoscopic illumination system for retroreflective materials | |
| US20180347948A1 (en) | Targeting system | |
| US20150059225A1 (en) | Sighting Device and Method | |
| US11859947B2 (en) | Targeting system | |
| WO2012121735A1 (en) | Apparatus and method of targeting small weapons | |
| SG10201707102RA (en) | Optical inspecting apparatus with an optical screening device | |
| US10545330B2 (en) | Inspection assembly | |
| US10006740B1 (en) | Sight assembly for firearms | |
| US9797572B2 (en) | Two way omnidirectional lens | |
| RU2671926C1 (en) | Glide path fire system providing visual and optical night time landing of helicopter to ship in night vision goggles | |
| CN207006046U (en) | A kind of flashlight lens group | |
| KR20160073698A (en) | Marine transportation including water cannon apparatus | |
| CN104973231B (en) | Water cannon jet water channel infra-red radiation strengthening system and its course of work | |
| CN209250744U (en) | Structure improved viewer and the medical instrument for having the viewer | |
| CN205560458U (en) | Statue of buddha lighting device | |
| RU2309363C2 (en) | Method for adapting camouflage of objectives | |
| KR20160004392U (en) | Marine transportation including water cannon apparatus | |
| CN206331763U (en) | A kind of waterproof energy-saving master is passively light emitting directory board used | |
| CN103133935B (en) | A kind of airport runway center line lamp | |
| KR880004149Y1 (en) | Laying apparatus of the fire for day and night | |
| TWM516844U (en) | Fiber-optic type luminous buoy for shrimp fishing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20190717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |