CN102855726B - Visualize phase battle array fire alarm system - Google Patents
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- CN102855726B CN102855726B CN201210310226.2A CN201210310226A CN102855726B CN 102855726 B CN102855726 B CN 102855726B CN 201210310226 A CN201210310226 A CN 201210310226A CN 102855726 B CN102855726 B CN 102855726B
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Abstract
The invention discloses one kind visualization phase battle array fire alarm system, including detecting terminal and monitor terminal, its detecting terminal includes thermal radiation array sensor, visible light camera, external alert data interface module, signal Combined Processing transport module, monitor terminal adds display or computer with display screen to constitute by data storage processor, and detecting terminal is connected to monitor terminal by signal wire.Complex environment is based on present system provides one kind, subregion is detected and displays temperature change, subregion sets alarm parameters, compatible various fire detection signal data, band self-learning function, visualization phase battle array fire alarm system with low cost, realizes early stage of fire alarm, visualization, intellectuality, systematization and can substantially reduce the rate of false alarm and cost of system, reduction fire damage.
Description
Technical field
The present invention relates to a kind of fire alarm system, and in particular to one kind visualization phase battle array fire alarm system, for multiple
The police of fire early prediction and fire alarm in miscellaneous environment space.
Background technology
At present, the Detection Techniques that conventional fire alarm system is used mainly have cigarette sense detection, carbon monoxide detecting, flame
Detection, heat detection etc., although these technologies are ripe cheap, due to can not noncontact detecting object temperature change, it is and fiery
Calamity generating process be typically since being raised temperature, while or progressively produce smog or naked light phenomenon, and no matter which kind of fire
Process, temperature rise is fire necessary factors, so general Detection Techniques can just send alarm, and rate of false alarm after fire generation
Higher reliability is relatively low.Regardless of whether be flash burn, catch fire, spontaneous combustion, the burning species such as blast, one of its necessary condition triggered with
Appropriate temperature is relevant, and the rise of point of origin temperature is to cause the principal element of fire, so being monitored and controlled around combustibles
Temperature field is fire preventing hidden danger and fire early detection is most sensitive, most reliable technology.Infrared thermal imaging fire detection technology
Although intuitive and reliable, its high-resolution thermal imaging chip is distributed due to the thermal imagery of the infra-red radiation of measured target object each several part
Signal is very weak, lacks that level of visible images and third dimension, thus need to carry out the control of some brightness of image and contrast
The processing such as system, actual correction and pseudo-colours description, treated signal is sent to vision signal formation part progress data turn
The thermal imaging vision signal of standard is changed and is formed, the Infrared Thermogram of measured target is shown finally by TV screen or monitor,
Its complicated technology cause it is with high costs, particularly thermal imaging chip to operating ambient temperature requirement compared with higher temperatures place, being
Ensure detection accuracy, generally require to install the refrigerating plants such as water circulation additional, such as " SAT-CK350-W infrared thermal imaging monitoring systems " is
The water-cooling type thermal infrared imager being monitored in the presence of a harsh environment (mainly for high temperature) is adapted to, probe just carries the machine of water collar
Shell, greatly limit the scope of its utilization, and the large spaces such as the more single forest of detection environment and city are normally only used at present
At a distance in specialty fire prevention, while the display that the display mode of thermal imaging overlay video imaging can largely effect on video is clear
Degree, has a strong impact on and the normal of video image is checked.The patent of Honeywell Int Inc BE Coles invention
200810171454.X infrared fire detection systems, although reported in view of high-resolution thermal imaging chip cost height, fire early stage
It is alert, the factor such as use in complex environment, but the invention is matched without visible images, is not easy to set each ken alarm parameters at any time
With observation directly perceived, the cost of implementation that the focusing of its poly-lens array and lens are blocked is very high, and operational reliability is poor, it is difficult in high volume push away
Extensively.
Therefore, develop with low cost, visualization, it is intelligent, can position, video pictures are clear, easily operated, maintenance side
Just the fire alarm system for, be applicable complex space, possessing early fire detection function just seems particularly significant.
The content of the invention
Goal of the invention：For deficiency of the prior art, complex environment, subregion are based on it is an object of the invention to provide one kind
Domain is detected and displays temperature change, subregion setting alarm parameters, compatible various fire detection signal data, band self study work(
Can, visualization phase battle array fire alarm system with low cost, to realize early stage of fire alarm, visualization, intellectuality, system
Change and the rate of false alarm and cost of system can be substantially reduced.
Technical scheme：In order to realize foregoing invention purpose, the technical solution adopted by the present invention is：
One kind visualization phase battle array fire alarm system, including detecting terminal and monitor terminal, its detecting terminal include hot spoke
Penetrate sensor array, it is seen that light video camera, external alert data interface module, signal Combined Processing transport module, detecting terminal
It can also be N groups that can be one group, and monitor terminal is made up of data transmission module and data storage processor and display unit, visited
The data transmission module that terminal is connected to monitor terminal by signal wire is surveyed, the real time temperature of search coverage is with the shape of numerical value array
Formula is shown over the display.
Described thermal radiation array sensor is the sensor that primary structure constitutes for infrared photosensitive first array and lens, is led to
Crossing the focussing force of lens makes the infra-red radiation metering of each search coverage of each photosensitive member correspondence detection of sensor, and converts
For electric signal, finally in the form of the mean temperature of search coverage or thermal exposure numerical value, show for monitor terminal processing and array
Show, its lens is matched with visible light camera lens, to ensure the physical location of each unit detection of thermal radiation sensor array
The position consistency shown with video image, the characteristic with low cost and adaptation compared with high workload environment temperature.
Described visible light camera can be that common camera can also be panoramic camera.
Described external alert data interface module is can be by cigarette sense, carbon monoxide, overload, short circuit, line temperature-sensitive degree etc.
Other signals related to fire access and are converted into systematic unity data format transmits external alarm signal to monitor terminal
Interface arrangement, can access signal all the way to access N roads signal, its signal can by compound signal transmission module with
Vision signal and thermal radiation array sensor signal are transmitted to monitor terminal by signal wire all the way, individually can also be transmitted all the way
To monitor terminal.
Described compound signal transmission module is that possess thermal radiation array sensor, visible light camera, external alert
The signal of data interface module can be incorporated into the module that signal wire all the way is transferred to detecting terminal function after processing.
Described data storage processor and display unit is made up of data storage processor and display, at data storage
Reason device is made up of the one or more in the equipment such as single-chip microcomputer, PLC, DVR, computer, is incorporated into after specific software main
Possess following functions, the infrared radiation signal that each infrared photosensitive member of thermal radiation array sensor is detected can be converted
Recorded, stored and shown into zone leveling temperature value or heat radiation value, the detection numerical value of each search coverage during display
The numerical value correspondence phase for the change that can be combined in the form of unit grid array in display in real time on the video images, each grid
The real-time average temperature value or heat radiation value for the search coverage answered, and the detecting location of search coverage that represents of each grid with
Position shown in video image is corresponding and matching, click on one or several unit grids can also export its historical data table or
Transformation temperature curve, system can manually set the mean temperature absolute threshold and change threshold of each search coverage, more than threshold
Value can select the change of grid cell color, the flicker of grid cell, send the pre-alarm prompting sound, and system can also be stored
With the fire alarm of the other outside accesses of Dynamic Announce, it can be patrolled with the threshold value of each alarm signal of initialization system and alarm computing
Volume, the numerical value for the fire alarm that system can be accessed according to thermal radiation array sensor signal and outside, comprehensive set threshold value
With arithmetic logic selection pre-alarm, directly alarm, send fire extinguishing signal etc. and act, simultaneity factor software possesses self-learning function,
System install on the spot after by one section of cycle prerun, according to recorded data, system by the computation model being previously set,
Automatically the temperature absolute threshold and change threshold of each search coverage are set, can also be adjusted and forecast according to learning outcome artificial interference
The threshold value and arithmetic logic of the actions such as alert, alarm, fire extinguishing.
Operation principle：
Described visualization phase battle array fire alarm system operation principle is, first in monitor terminal with self-studying mode or people
The pre-alarm of work pattern initialization system, the thermal radiation array sensor signal directly alarmed, send the actions such as fire extinguishing signal and outside
The threshold value of the fire alarm of access, thermal radiation array sensor is by the real-time average temperature data in each search coverage detected
It is sent to monitor terminal storage and shows the corresponding real-time region of each search coverage in the form of matrix grid on a display screen
Mean temperature numerical value, it is seen that the vision signal of light video camera is sent to by data conversion into after unifying form by transport module
Monitor terminal is stored and shows the video in detected region, and grid real time temperature average value is compounded on corresponding video pictures,
The fire alarm detected is sent to monitor terminal storage simultaneously by the data of external alarm equipment by external signal interface module
Shown on display bar that can be on the frame of display screen or corner, when portion temperature rise extremely in detected region somewhere breaks through
During given threshold, system can combine the data of other external fire signals under system automatic mode, by threshold set in advance
Value and arithmetic logic send pre-alarm or alarm signal, can also directly command extinguishing device action fire extinguishing.In a manual mode,
When portion temperature rise extremely in detected region somewhere reaches setting pre-alarm threshold value, its corresponding area grid can flash
Or color change and the pre-alarm sound is simultaneously emitted by, it is corresponding aobvious on screen during other external interface alarm alarm signals
Show bar ejection flicker or color change and be simultaneously emitted by the pre-alarm sound, when actual state meets the alarm bar of advance default
System, which will send monitoring personnel under alarm signal, artificial mode, during part can check relevant real time data at any time, click on grid
Or outside fire alarm shows bar, its historical data table or change curve can also be exported, with reference to real-time video situation, monitor
Member can take signal an alert, notice to check on the spot, take fire suppression measures etc. to act, and so can both avoid reporting by mistake and leaking
The hidden danger or the early stage very first time that report can occur in fire again take fire suppression measures.
Beneficial effect：The system possesses advantages below compared with existing invention：
1st, the use of infrared array sensor overcomes thermal imaging chip environmental temperature more than nominal operating temperature (usually
30 DEG C) afterwards precision drastically decline the shortcoming high with cost so that cost of the present invention than low ten times of thermal imaging fire detecting system with
On, while can worked in the case of cooling system need not be used in the environment of more than 50 DEG C, secondary system exploitation letter
It is single, it is practical, it is applied widely, it is easy to large-scale promotion to use.
2nd, all standing subregion temperature change is detected, and causes system to possess pole early fire detection with reference to miscellaneous cause signal
Function, combustion phases can be detected at the beginning of electrical heating or object, can be prevented trouble before it happens, be substantially reduced fire damage.
3rd, visualization, intellectuality, fire location and reason can be judged rapidly, it is to avoid report and fail to report police by mistake, be easy to rapid
Take appropriate measures, convenient operating maintenance.
4th, self study setting, the setting of subregion threshold value, artificial interference set-up function, make system flexibly convenient, Applicable temperature
Change is big, the larger complicated place of the temperature difference between object, saves the installation and debugging time.
5th, system compatibility is strong, and temperature value Overlapping display overcomes the compound display of thermal imaging to the clear of original video pictures
The influence of degree, the function that can facilitate on the basis of former video monitoring system not rewiring transformation can form the system again may be used
To retain original video monitoring function, investment reduction.
Brief description of the drawings
Fig. 1 is embodiment (one) structural schematic block diagram；
Fig. 2 is embodiment (two) structural schematic block diagram；
Fig. 3 is embodiment (one) and embodiment (two) work-based logic schematic block diagram.
Embodiment
Two exemplary embodiments of the present invention are further explained with reference to specific accompanying drawing.
Embodiment (one) is a kind of visualization phase battle array fire based on coaxial cable signal transmssion line and analog video camera
Calamity warning system, including N groups (determining particular number depending on field requirement) detecting terminal and monitor terminal, as shown in figure 1, every group of spy
Surveying terminal includes thermal radiation array sensor, it is seen that light video camera, external alert data interface module, the transmission of signal Combined Processing
Module, monitor terminal is made up of signal transmission module, DVR, single-chip microcomputer, display, and every group of detecting terminal is by coaxial
Wired signal transmission line connects monitor terminal.
Visible light camera described in embodiment (one) is analog video camera, and visual angle is 60 °.
Thermal radiation array sensor described in embodiment (one) selects one group of HTPA-16X16-L3 far infrared sensing
Device, visual angle be 60.8 ° match with camera angles, for meet 3 × 4 scale visual monitored pictures all standing can only handle with
Display 12 row signal corresponding with video with 16 rows.
External alert data interface module described in embodiment (one), including Smoke Detector signal input port, switching value
Signal revolution word signaling module, signal output port composition, its input port are connected with switching value Smoke Detector, its output port
It is connected with signal Combined Processing transport module.
Signal Combined Processing transport module and signal transmission module described in embodiment (one) is using global high performance analog
Mixed signal semiconductor is designed and the SLOC coaxial cables composite video of manufacture leading manufacturer Intersil exploitations transmits solution party
Case, it can simulate CVBS videos and numeral IP signals by a coaxial cable simultaneous transmission.SLOC schemes are based on by one
The modem PHY chip TW3801 of SLOC technologies and a receiver modem PHY chip based on SLOC
TW3811 is constituted.SLOC technologies make full use of mounted coaxial cable infrastructure and support the IP functions of networking, TW3801
The modem PHY subsystems being a highly integrated with TW3811, are adjusted including an AFE(analog front end) (AFE), a numeral
Modulator-demodulator and two ethernet medium interfaces (MII).Analog video signal that TW3801 is received, thermal radiation array sensing
Device data signal, converted cigarette sense alarm number signal be combined into one to one one by coaxial cable transmit it is proprietary defeated
Go out signal, it is then carried out reciprocity decoding by TW3811 from the signal received based on SLOC technology modems PHYIC, thus
The data signal and cigarette sense alarm signal that the analog video signal of analog video camera and thermal radiation array can be sensed are sent to
Monitor terminal.
Monitor terminal described in embodiment (one) is recorded by receiver modem PHY chip TW3811, single-chip microcomputer, hard disk
Camera, display composition, single-chip microcomputer are used as the upper of conventional DVR compatible can generally to use the DVR of model
Position machine connection DVR and display, while also integrated following functions, can be by each red of thermal radiation array sensor
The infrared radiation signal that outer photosensitive member is detected is converted into zone leveling temperature value, and in the corresponding grid cell lattice of display screen
Interior display, and be compounded in by actual detection position on corresponding video image, its historical data can be exported by clicking on any one lattice
Table and transformation temperature curve, can manually set the mean temperature absolute threshold of each search coverage, and grid is selected more than threshold value
Cell colors fade to peony with temperature rise by pale red and send the pre-alarm prompting sound, can store and Dynamic Announce
The cigarette sense fire alarm of outside access, the threshold value and actuation of an alarm logic of each alarm signal of initialization system as shown in Figure 3 can be with
According to the numerical value of thermal radiation array sensor signal and the cigarette sense fire alarm of outside access, patrolled by the threshold value and computing of setting
Volume, the output pre-alarm sound, external warning device directly alarm, send the actions such as fire extinguishing signal.System is provided simultaneously with self study
Function, system install on the spot after by one section of cycle prerun, according to recorded data, system is according to the meter being previously set
Model is calculated, the temperature absolute threshold and change threshold of each search coverage are set automatically, also can be according to learning outcome artificial interference
Adjust the threshold value and arithmetic logic of the actions such as pre-alarm, alarm, fire extinguishing.
Visualization phase battle array fire alarm system workflow described in embodiment (one) is as follows, first in monitor terminal with certainly
Mode of learning or the pre-alarm of artificial mode initialization system, the thermal radiation array sensing directly alarmed, send the actions such as fire extinguishing signal
The threshold value of device signal and the cigarette sense fire alarm of outside access, thermal radiation array sensor is detected in the domain of region Nei Ge dot matrix areas
Real-time average temperature data be sent to monitor terminal storage and on a display screen in the form of matrix grid show each detect
The corresponding zone leveling Temperature numerical of search coverage, it is seen that the vision signal of light video camera is sent to DVR and stores and lead to
The video that single-chip microcomputer shows detected region is crossed, the grid temperature averages handled by single-chip microcomputer are compounded in corresponding video and drawn
On face, the detectable signal of external alert data-interface is sent to single-chip microcomputer storage and processing and on the frame of display screen or corner
Display bar on directly display, when detected region somewhere portion temperature extremely raise when, in automatic mode, system can be tied
Outside cigarette sense alarm signal is closed, pre-alarm or alarm signal are sent by threshold value set in advance and arithmetic logic, can also be direct
Command extinguishing device action fire extinguishing.It is alarm first threshold point, 60 that specifically we, which can set a certain 40 DEG C of search coverage temperature,
It is the second alarm threshold value point when DEG C being, 90 DEG C are the 3rd alarm threshold value point, to avoid light from opening caused transient temperature rise
Cause wrong report, while the region where light fixture is set as into light fixture pattern, i.e. temperature change threshold value are set to 30 milliseconds of drastic changes of having to go to the toilet
Change and be no more than more than 10 DEG CJi Gai areas and temperature in the case of 70 °, do not responded, orientate as normally, any pre-alarm is not sent
And alert data.When a certain grid temperature anomaly in detected region is increased to 40 DEG C, if cigarette sense does not send alarm signal, its
Corresponding area grid square frame color is changed into pale red and is simultaneously emitted by the pre-alarm buzzer sound, points out observation, if
Now outside cigarette sense interface also receives corresponding cigarette sense alarm indication bar on alarm signal, screen and will flashed simultaneously, is now
System will be sent can interrupt alarm signal under the formal fire alarm sound, artificial mode after observation video excludes emergency
Number.If its exterior cigarette sense interface is to alarm signal, and regional temperature is within 40 DEG C, corresponding cigarette sense report on screen
Alert display bar, which will flash and send buzzer sound sound, reminds monitoring personnel to note observation actual displayed temperature variations and real-time
Video image, if it find that disaster hidden-trouble can send alarm signal manually, can notify inspection in the case of disaster hidden-trouble is excluded
Repair system equipment.When a certain grid temperature anomaly in detected region is increased to 60 DEG C, its corresponding area grid square frame color
It is changed into red, even if cigarette sense does not send alarm signal, now the external warning device of startup is also sent formal fire alarm by system
Alarm signal can be interrupted after observation video excludes emergency under the sound, artificial mode, if now outside cigarette sense connects
Mouth, which also receives system under alarm signal, artificial mode, will send formal fire alarm, formal except sending in automatic mode
Outside fire alarm, system will send extinguishing action signal and start self-extinguishing program to fire extinguishing system.When detected region is a certain
When grid temperature anomaly is increased to 90 DEG C, even if cigarette sense does not send alarm signal, now system will also send formal fire alarm
The sound, in automatic mode in addition to sending formal fire alarm, system will send extinguishing action signal and start to fire extinguishing system
Self-extinguishing program.
Monitoring personnel can check relevant real time data at any time under any circumstance, click on grid or outside fire alarm
Bar is shown, its historical data table or change curve can also be exported, with reference to real-time video situation, monitoring personnel can be taken and send
Alarm signal, notice are checked, take fire suppression measures etc. to act on the spot, so can not only avoid reporting by mistake and failing to report but also can be in fire
The hidden danger of generation or the early stage very first time take fire suppression measures.
Embodiment (two) is a kind of visualization phase battle array fire alarm based on networking signal transmssion line and IP video frequency pick-up heads
System, including N groups (determining particular number depending on field requirement) detecting terminal and monitor terminal, as shown in Fig. 2 every group of detecting terminal
Including thermal radiation array sensor, it is seen that light video camera, external alert data interface module, signal Combined Processing transport module,
Monitor terminal is made up of main frame, display, network signal transport module, and every group of detecting terminal is transmitted by network signal
Line is connected to the network signal transport module of monitoring terminal.
Visible light camera described in embodiment (two) is IP video cameras, and visual angle is 40 ° or so.
Thermal radiation array sensor described in embodiment (two) selects 2 groups of 16X4 MLX90620 far infrared sensors,
Visual angle is 40 ° × 15 °, and two groups are arranged above and below, and are matched with camera angles, is covered entirely while meeting 3 × 4 scale visual monitored pictures
Lid, MLX90620 far infrared sensors possess High Speed I 2C compatible with digital interface, and the synchronization for using tape control unit is touched
Hair pattern.
External alert data interface module described in embodiment (two) is the 8 tunnel interface modules with address code, wherein all the way
For switching value interface, five tunnels are analog quantity interface, and RS232, RS485 digital signal interface are each all the way, and it can compatible common mark
Accurate detection output signal, can be by such as cigarette sense, carbonomonoxide concentration, combustable gas concentration, overload, short circuit, line temperature-sensitive
The outside output signal related to fire such as degree accesses and be converted into the IP data signals with address code directly to be connected by netting twine
Vision signal, infrared array sensor signal are transmitted to prison in the lump to monitor terminal or by signal Combined Processing transport module
Control terminal.
Signal Combined Processing transport module described in embodiment (two) has collection IP vision signals, I2C infrared signals, outer
Portion's alarm IP signals and the module for being converted into unified IP signal formats output, including IP video signal collectives interface,
The infrared array signal acquisition interfaces of I2C, external alert IP signal acquisitions interface and IP signal output interfaces.
Main frame and display described in embodiment (two), the information possessed in itself except computer, the storage of image
Deposit, handle, showing etc. outside function, following functions are also equipped with after being incorporated into special software, thermal radiation array sensor is each red
The infrared radiation signal that outer photosensitive member is detected is converted into zone leveling temperature value, and shows in the corresponding grid of display screen
Show, its historical data table and transformation temperature curve can be exported by clicking on any one lattice, can manually set each search coverage
Mean temperature absolute threshold, becomes pale red more than threshold value selection grid cell color and sends the pre-alarm prompting sound, can be with
The fire alarm of access outside storage and Dynamic Announce, referring to Fig. 3, the threshold value and actuation of an alarm of each alarm signal of initialization system
Logic, system can be according to the cigarette sense of thermal radiation array sensor signal and outside access, carbon monoxide, fuel gas, electrically
The numerical value of the fire alarms such as fire alarm, buzzer pre-alarm, external warning device are exported by the threshold value and arithmetic logic of setting
Directly alarm, send the fire extinguishing action such as signal, system is provided simultaneously with self-learning function, system install on the spot after by one section of cycle
Prerun, according to recorded data, system sets the temperature of each search coverage automatically by the computation model being previously set
Absolute threshold and change threshold, can also be adjusted according to learning outcome artificial interference pre-alarm, alarm, the threshold value of the action such as fire extinguishing and
Arithmetic logic.
Visualization phase battle array fire alarm system workflow described in embodiment (two) is as follows, first in monitor terminal with certainly
Mode of learning or the pre-alarm of artificial mode initialization system, the thermal radiation array sensing directly alarmed, send the actions such as fire extinguishing signal
The threshold value of device signal and each fire alarm of outside access, thermal radiation array sensor will in real time be put down in the search coverage detected
Equal temperature data, which is sent to monitor terminal storage and is combined on a display screen in the form of matrix grid, is shown in corresponding video
On picture, the detectable signal of external alert data-interface is sent to monitor terminal storage and frame that can be in display screen or corner
On display bar on show, when the abnormal rise of detected region somewhere portion temperature under system automatic mode, system can be with
With reference to the fire alarm of outside access, pre-alarm or alarm signal are sent by threshold value set in advance and arithmetic logic, can also
Directly commander's extinguishing device action fire extinguishing.
The system embodiment (two) is used for example in certain Engine Room, its outside fire alarm has, all the way SD6600 types
Analog quantity photoelectric smoke detector is the principle that scatters smog using infrared light beam to carry out the detection of smokescope,
Smokescope information is constantly converted into analog signalses and is sent to alarm controller by detector, and alarm controller is to passing
The defeated detection data come carries out calculating analysis, exports the parameters such as rate of change, the intensity of smokescope, and do not have in smoke density
Actuation of an alarm signal is sent before the light extinction rate for having more than every meter 2%, all the way using diesel oil volatile matter as main detected object can
Combustion gas bulk concentration analog quantity alarm signal, carbonomonoxide concentration analog quantity alarm signal all the way, all the way current electrical fire monitor
RS232 digital alarm device signals, export digital alarm signal and the monitoring datas, Er Luguan such as electric leakage, overload, short circuit, phase shortage
Key location contacts formula temperature sensor analog signal, exports cabin temperature of key part signal.It is that system is installed and set first,
Start self-learning function after system installation, light fixture is fully open, after being used 1 day with ship, each probe unit of data display is visited
Region maximum average temperature is surveyed from 26 DEG C to 70 DEG C, for conventional contactless temperature sensing fire alarm probe, ship
Code requirement is that air themperature is not acted when being less than 54 DEG C, and temperature when temperature is raised with no more than 1 DEG C speed per minute
It should be acted before more than 78 DEG C, that is to say, that be traditional temperature-sensing probe, in the case of the overwhelming majority, due to fire generating unit
Position heat is slowly to be conducted by air to probe, so alert if can be just met only when fire really occurs sends report
Alert signal, with reference to specification, we are on the basis of each unit search coverage mean temperature of actual detection, it is contemplated that detectable signal is
Air themperature around object average surface temperature in itself rather than system detecting terminal, in terms of temperature rise absolute value I
Unified each search coverage of initialization system to exceed fiducial temperature 30% be alarm first threshold point, be the more than fiducial temperature 60%
2 alarm threshold value points, are the 3rd alarm threshold value point more than fiducial temperature 100%, in terms of temperature increase rate, we are set in
Temperature increase rate (steeply rises interference) on the premise of being less than 5 DEG C per second to avoid light fixture from opening bulb temperature, temperature rise
Speed is per minute to be more than 1 DEG C for the first alarm threshold value, is the second alarm threshold value more than 5 DEG C, is the 3rd alarm threshold value more than 10 DEG C.
SD6600 pattern analog quantity photoelectric smokes are set, signal is the first alarm threshold value, 2% dim light in the light extinction rate of every meter 1% of smoke density
It is the second alarm threshold value when rate or photoelectric smoke send actuation of an alarm signal in itself, is the 3rd alarm threshold value when 3%, sets flammable
The alarm threshold value of gas concentration sensor first is 100ppm, and the second alarming value is 1000ppm, and the 3rd alarm threshold value is 4000ppm,
Carbonomonoxide concentration analog sensor the first alarm threshold value of signal is set as 50ppm, the second alarm threshold value alarming value is
200ppm, the 3rd alarm threshold value is 1000ppm.Electrical fire monitoring RS232 digital alarm signals, by genuine setting value, its is defeated
Go out the digital alarm signals such as electric leakage, overload, short circuit, phase shortage and be accordingly to be regarded as the first alarm threshold value, two road key position contact temperatures
Sensor analog signals set the first alarm threshold value as 50 DEG C, and the second alarm threshold value is 80 DEG C, and the 3rd alarm threshold value is 130
℃.The pre-alarm condition of initialization system is either signal more than the first alarm threshold value；Initialization system alert if is more than one
More than the second alarm threshold value, more than one other signal exceedes signal more than more than first alarm threshold value, or four signal value simultaneously
First given threshold, or more than one signal is more than the 3rd alarm threshold value；Initialization system sends extinguishing action signal conditioning to appoint
More than one other signal is super more than more than second alarm threshold value, or five signal value simultaneously more than the 3rd alarm threshold value for one signal
Cross the second alarm threshold value.
To help the working condition and advantage that further understand embodiment (two), occur with reference to several frequently seen fire
Process and detection alarm situation are described further.
The disaster hidden-trouble stage：In addition to flash burn and blast, the generation of general fire has a temperature to be stepped up to one
Definite value and the combustibles that ignite lead to the process of big fire, this temperature rise but the actual process for triggering fire we can claim
For disaster hidden-trouble process, and this process is to be easy to be detected by infrared array sensor and cause detected territory element grid
Temperature numerical increases to over first threshold extremely, and now its corresponding area grid cell colors is changed into pale red and sent out simultaneously
Go out the pre-alarm buzzer sound, point out, if glowing will pass with a certain amount of smog, now cigarette sense and carbon monoxide
The concentration signal that sensor is detected will quickly reach the first alarm threshold value, and system display interface can appliance for releasing single smoke sense or an oxidation
Carbon sensor exceedes the related real time data of first threshold and sends pre-alarm buzzing prompt tone, and such situation may determine that substantially
Existing disaster hidden-trouble is present, and hidden danger can be eliminated by taking immediate steps.Smokeless temperature anomaly rise disaster hidden-trouble is electric mostly
Heating process caused by failure, if electric fault occurs for related electric equipment, automatic spring is shown electricity by system display interface
Real time data and the trouble point alarm signals such as electric leakage, overload, short circuit, the phase shortage of the output of gas fire hazard monitoring RS232 digital alarms equipment
Number, and pre-alarm buzzing prompt tone is sent, now if grid cell Temperature numerical increases to over first threshold extremely, substantially
It can also judge that existing disaster hidden-trouble is present, electric fault cause and faulty line should be judged according to equipment alarm signal immediately,
And the abnormal raised position of combination temperature, hidden danger can be eliminated by excluding electric fault.The fire that flash burn and blast trigger often develops
Very fast consequence is also than more serious, but such fire generally occurs in the place for having fuel gas (including combustible volatile), and only
Flash burn or blast can just be caused when fuel gas reaches that any point temperature reaches flash-point in finite concentration and environment and cause by having
Fire, so system display interface automatic spring fuel gas is dense when combustable gas concentration sensor reaches the first alarm threshold value
The related real time data of degree simultaneously sends pre-alarm buzzing prompt tone, and now combustable gas concentration may be from the pole for occurring flash burn or blast
Limit concentration differs greatly, but must also cause enough attention, should pay close attention to search coverage temperature rising condition and be particularly most
High-temperature region is to prevent temperature rise from causing flash burn and blast, while checking that fire hazard monitoring RS232 digital alarms equipment is exported
Real time data and the alarm signal such as electric leakage, overload, short circuit, phase shortage, it is to avoid electric arc or electric spark cause fire, lead to simultaneously
Cross video and checked whether personnel at the scene, related personnel should be notified to stop all and may trigger sudden strain of a muscle immediately at the scene if any personnel
Combustion or explosive fire accident behavior, then by regulation dispatch officers search reason remove a hidden danger, if now there is other alarm signals to reach
First alarm threshold value should notify Field Force to withdraw immediately, then take corresponding measure to remove a hidden danger.When any of the above-described situation occurs,
Duty personnel can observe video using every signal data is transferred, and notice scene is checked etc., and measure ascertains the reason, it is determined that
Exclude after disaster hidden-trouble, pre-alarm signal can be eliminated with hand-reset, reset that follow-up supervention goes out pre-alarm signal can be manual
The related grid mean temperature benchmark of adjustment is to reasonable value, or the other detectable signal first thresholds of adjustment setting are to reasonable value, but not
The 25% of former setting value must be exceeded, still pre-alarm should be overhauled to system and sensor after adjustment setting.Due to implementing
Example (two) is all relatively low in the setting of the first alarm threshold value of pre-alarm stage each road signal, and the precision of IR array detectors reaches
To ± 1 DEG C, temperature anomaly regional location is again very clear on video, and in conjunction with other external alarm signals, duty personnel can
To judge hidden danger position and reason rapidly, be easy to rapid disposal, thus can exclude substantially glow, electric heat, flash burn, blast
The disaster hidden-trouble Deng caused by, so the system not only be able to can just be forecast in the pole early stage of fire, it might even be possible to hidden in fire
Suffering from the stage just can be found that and prevents, without sending formal alarm signal.
I.e. warning stage fire stage of development：Fire typically can significantly rise when occurring with local temperature, greatly
The phenomenons such as the rising of smog and carbonomonoxide concentration are measured, alert and if calculating logic with reference to set by related specifications are implemented
Example (two) described in fire alarm system, not only can be promptly and accurately send fire alarm signal, be also equipped with advantages below, by
The signal exported in use sensor is generally continuous digital quantity and analog signalses, normally due to caused by sensor degradation
No signal failure is easy to by computer diagnostic, the setting of relatively low the first alarm threshold value so that system generally the forecast stage just
It can be found that the signal drift failure of sensor, is calculated and arbitration functions with reference to intelligent logical, it can avoid occurring rank in fire
The wrong report of section is not reported.
The extinguishing action stage：Due to Prospect of Marine Fire Protection system it is intrinsic the characteristics of, fire alarm signal occur when be directed to fire alarm
Startup naval vessel automatic fire extinguishing system in generation cabin can lead cabin and damage and bring huge economic loss, and the damage in important cabin
The paralysis of whole ship control system or dynamical system is frequently can lead to, out of hand or power ship will at sea face
Bigger danger, therefore traditional ship fire hazard monitoring system is when sending fire alarm signal, it is more due to reporting by mistake, it can not perceive again
Typically do not start automatic fire extinguishing system immediately with when assessing on real-time live state, naval vessel and occurring alarm of fire, receive fire alarm
During signal, commanding generally first can the scene of dispatching officers check, but because naval vessel passage complexity is very long, wait the relevant personnel to return to report
Situation takes measures again, it will usually because the time delay cause fire spread expand even generation can not put out a fire to save life and property it is serious after
Really, in the present embodiment, because commanding can be with real time inspection video and alarm region temperature and other alarm real time datas
Comprehensive descision is carried out, so most appropriate measure can be taken to avoid spreading for fire in the very first time, at utmost by fire
Caused loss is preferably minimized.Simultaneously in naval vessel activation system fire-extinguishing apparatus, often to close fire and occur cabin, due to reality
The system discovery fire applied described in (two) is more early, in fire extinguishing procedure often detecting devices can also normal work, now command
Personnel can observe the actual effect of fire extinguishing by monitor terminal, even if fire occurs cabin detecting terminal and damaged completely, may be used also
Cabin is closed on to grasp fire in time by other detecting terminals and whether spread to, facilitates decision-making whether to take and further arranges
Apply, it is to avoid excessively fire extinguishing or inappropriate instruction of abandoning ship, the naval vessel loss caused by fire extinguishing procedure work is preferably minimized degree.
Claims (5)
1. a kind of fire alarm system, and in particular to one kind visualization phase battle array fire alarm system, in complex environment space
The police of fire early prediction and fire alarm, it is characterized in that system includes detecting terminal and monitor terminal, its detecting terminal includes
Thermal radiation array sensor, it is seen that light video camera, external alert data interface module, signal Combined Processing transport module, detection
It can also be N groups that terminal, which can be one group, and monitor terminal is by data transmission module and data storage processor and display unit group
Into detecting terminal is connected to the data transmission module of monitor terminal by signal wire, and the real time temperature of search coverage is arranged with numerical value
The form of battle array is shown over the display；
Described data storage processor and display unit is made up of data storage processor and display, data storage processor
It is made up of, mainly possesses after being incorporated into specific software the one or more in single-chip microcomputer, PLC, DVR, computer equipment
The infrared radiation signal that each infrared photosensitive member of thermal radiation array sensor is detected, can be converted into each by following functions
The average temperature value or heat radiation value of search coverage recorded, stored and shown, the detection of each search coverage during display
Numerical value can be combined on the video images the numerical value pair of the change in display in real time, each grid in the form of unit numerical value array
Answer the real-time average temperature value or heat radiation value of corresponding search coverage, and the detection position of the search coverage of each grid representative
And matching corresponding with the position shown in video image is put, its historical data can also be exported by clicking on one or several unit grids
Table or transformation temperature curve, system can manually set the mean temperature absolute threshold and change threshold of each search coverage, surpass
The change of grid cell color, the flicker of grid cell can be selected, send the pre-alarm prompting sound by crossing threshold value, and system can be with
The fire alarm of access outside storage and Dynamic Announce, can be patrolled with the threshold value of each alarm signal of initialization system and alarm computing
Volume, the numerical value for the fire alarm that system can be accessed according to thermal radiation array sensor signal and outside, comprehensive set threshold value
With arithmetic logic selection pre-alarm, directly alarm, send fire extinguishing signalizing activity, simultaneity factor software possesses self-learning function, is
By the prerun in one section of cycle after system installation on the spot, according to recorded data, system is by the computation model being previously set, certainly
The temperature absolute threshold and change threshold of the dynamic each search coverage of setting, can also adjust according to learning outcome artificial interference and forecast
Alert, alarm, the threshold value of extinguishing action and arithmetic logic.
2. fire alarm system according to claim 1, it is characterised in that thermal radiation array sensor is that primary structure is
The sensor of infrared photosensitive first array and lens composition, each photosensitive member correspondence for making sensor by the focussing force of lens is visited
The infra-red radiation metering of each search coverage is surveyed, and is converted into electric signal, finally with the mean temperature of search coverage or heat radiation
The form of numerical quantity, shows, its lens is matched with visible light camera lens for monitoring terminal processes and array, to ensure
The position consistency that the physical location of each search coverage detection of thermal radiation sensor array is shown with video image.
3. fire alarm system according to claim 1, it is characterised in that visible light camera can be common camera
It can also be panoramic camera.
4. fire alarm system according to claim 1, it is characterised in that external alert data interface module is can be by
Cigarette sense, carbon monoxide, overload, short circuit, line sense temperature signal access and are converted into systematic unity data format and passed to monitor terminal
The interface arrangement of defeated external alarm signal, can access signal all the way to access N roads signal, its signal can be by multiple
Signal transmission module is closed to transmit to monitor terminal by signal wire all the way with vision signal and thermal radiation array sensor signal,
Individually it can transmit all the way to monitor terminal.
5. fire alarm system according to claim 1, it is characterised in that compound signal transmission module is that possess hot spoke
Penetrating sensor array, visible light camera, the signal of external alert data interface module can be incorporated into after processing and believe all the way
Number line is transferred to the module of detecting terminal function.
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