CN102855726A - Visualized phase-array fire alarm system - Google Patents
Visualized phase-array fire alarm system Download PDFInfo
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- CN102855726A CN102855726A CN2012103102262A CN201210310226A CN102855726A CN 102855726 A CN102855726 A CN 102855726A CN 2012103102262 A CN2012103102262 A CN 2012103102262A CN 201210310226 A CN201210310226 A CN 201210310226A CN 102855726 A CN102855726 A CN 102855726A
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Abstract
The invention discloses a visualized phase-array fire alarm system which comprises a detection terminal and a monitoring terminal, wherein the detection terminal comprises a thermal radiation array sensor, a visible light camera, an external alarm data interface module and a signal composite processing transmission module, the monitoring terminal is composed of a data storage processor and a display or a computer with a display screen, and the detection terminal is connected to the monitoring terminal through a signal wire. The invention provides a visualized phase-array fire alarm system which is based on a complicated environment, regionally detects and displays temperature changes, regionally sets up alarm parameters, is compatible with various fire detection signal data and low in cost, and has a self-learning function; and according to the invention, the early property, visualization, intelligentization and systematization of fire alarming are realized, and the false alarm rate and cost of the system can be greatly reduced, thereby reducing the fire loss.
Description
Technical field
The present invention relates to a kind of fire alarm system, be specifically related to a kind of visual phase battle array fire alarm system, be used for the alert and fire alarm of fire early prediction in the complex environment space.
Background technology
At present, the Detection Techniques that fire alarm system commonly used adopts mainly contain cigarette sense detection, carbon monoxide detecting, flame detecting, heat detection etc., although these technology are ripe cheap, but because temperature variation that can't the noncontact detecting object, and the fire generating process is normally from temperature raises, simultaneously or progressively produce smog or naked light phenomenon, and which kind of fire process no matter, it is the fire necessary factors that temperature raises, so general Detection Techniques just can give the alarm after fire occurs, and the rate of false alarm higher reliability is lower.And no matter be flash burn, catch fire, the burning kinds such as spontaneous combustion, blast, one of necessary condition of its initiation is all relevant with suitable temperature, it is the principal element that causes fire that the point of origin temperature raises, so the temperature field around monitoring and the control fire goods is fire preventing hidden danger and responsive, the most reliable technology of fire early detection.Although the infrared thermal imaging fire detection technology is intuitive and reliable, but its high resolving power thermal imaging chip since the thermal imagery distribution signal of the infrared radiation of measured target object each several part very a little less than, lack the sort of level of visible images and stereoscopic sensation, thereby need carry out the control of some brightness of image and contrast, the actual correction with pseudo-colours describes to wait processing, treated signal is sent to the thermal imaging vision signal that the vision signal forming section is carried out data-switching and formed standard, the Infrared Thermogram that shows at last measured target by TV screen or monitor, its complicated technology causes with high costs, particularly the thermal imaging chip requires operating ambient temperature, in the higher temperatures place, for guaranteeing detection accuracy, often need to install additional the refrigerating plants such as water circulation, be the adaptation water-cooling type thermal infrared imager that (mainly for high temperature) is monitored under rugged surroundings such as " SAT-CK350-W infrared thermal imaging monitoring system ", probe is just with the casing of water collar, greatly limited the scope of its utilization, generally only be used at present in the remote specialty fire prevention of the large spaces such as the more single forest of acquisition environment and city, the display mode of simultaneously thermal imaging overlay video imaging can affect the display resolution of video greatly, has a strong impact on normally checking video image.The patent 200810171454.X infrared fire detection system of the BE Cole of Honeywell Int Inc invention, although consider that high resolving power thermal imaging chip cost is high, early fire alarming, the factor such as use in the complex environment, but should invention mate without visible images, be not easy to set at any time each ken alarm parameters and directly perceived the observation, the realization cost that its poly-lens array focusing and lens block is very high, and operational reliability is poor, is difficult to popularization in enormous quantities.
Therefore, develop with low cost, visual, intelligent, can locate, video pictures is clear, easy operating, easy to maintenance, applicable complex space, the fire alarm system that possesses the early fire detection function just seem very important.
Summary of the invention
Goal of the invention: for deficiency of the prior art, the purpose of this invention is to provide a kind of based on complex environment, the subregion is surveyed and displays temperature changes, alarm parameters is set in the subregion, compatible various fire detection signal data, the band self-learning function, visual phase battle array fire alarm system with low cost is with early stageization that realize fire alarm, visual, intelligent, systematization, also can greatly reduce rate of false alarm and the cost of system.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution used in the present invention is:
A kind of visual phase battle array fire alarm system, comprise detecting terminal and monitor terminal, its detecting terminal comprises the thermal radiation array sensor, visible light camera, the external alert data interface module, signal Combined Processing transport module, it also can be the N group that detecting terminal can be one group, monitor terminal is comprised of data transmission module and data storing processor and display unit, detecting terminal process signal wire is connected to the data transmission module of monitor terminal, and the real time temperature of search coverage shows at display with the form of numerical value array.
Described thermal radiation array sensor is that primary structure is the sensor that infrared photosensitive first array and lens form, the focussing force of scioptics makes the corresponding infrared radiation metering of surveying each unit area of each photosensitive unit of sensor, and be converted into electric signal, final with the medial temperature of unit area or the form of thermal exposure numerical value, process and the array demonstration for monitor terminal, its lens and visible light camera lens coupling, with the physical location of each unit detection of assurance thermal radiation sensor array and the position consistency of video image demonstration, has the characteristic with adapting to than the high workload environment temperature with low cost.
Described visible light camera can be that common camera also can be panoramic camera.
Described external alert data interface module is and to convert the systematic unity data layout to the interface arrangement of monitor terminal transmit outer alerting signal with other signal relevant with fire access such as cigarette sense, carbon monoxide, overload, short circuit, line temperature-sensitive degree, can be that access one road signal also can access N road signal, its signal can transfer to monitor terminal by one road signal wire through compound signal transmission module and vision signal and thermal radiation array sensor signal, also can independent one the tunnel transfers to monitor terminal.
Described compound signal transmission module is that the signal that possesses thermal radiation array sensor, visible light camera, external alert data interface module can be incorporated into the module that one road signal wire is transferred to the detecting terminal function after treatment.
Described data storing is processed and display unit is comprised of data storage processing device and display, the data storing processor is by single-chip microcomputer, PLC, DVR, one or more compositions in the equipment such as computing machine, mainly possesses following functions after enrolling specific software, the infrared radiation signal that each infrared photosensitive unit of thermal radiation array sensor can be detected is converted into the zone leveling temperature value or the heat radiation value carries out record, store and demonstration, the detection numerical value in each probe unit zone can be compounded in the form of unit grid array on the video image and show in real time during demonstration, the numerical value of the variation in each grid to should the zone real-time average temperature value or heat radiation value, and the detecting location of the unit area of each grid representative and coupling corresponding with the position shown in the video image, click one or several unit grid and can also derive its historical data table or transformation temperature curve, system can manually set medial temperature absolute threshold and the change threshold of each net region, surpass threshold value and can select the variation of grid cell color, the flicker of grid cell, send the pre-alarm prompting sound, system can also store and dynamically show the fire alarm of other outside access, threshold value and the warning arithmetic logic of each alerting signal that can initialization system, system can be according to the numerical value of thermal radiation array sensor signal and the outside fire alarm that accesses, comprehensively set threshold value and arithmetic logic and select pre-alarm, directly report to the police, send the actions such as fire extinguishing signal, simultaneity factor software possesses self-learning function, after system installs on the spot through the prerun in one period cycle, according to recorded data, system is by the computation model of setting in advance, temperature absolute threshold and the change threshold of each net region of automatic setting also can be adjusted pre-alarm according to the learning outcome artificial interference, report to the police, fire extinguishing waits threshold value and the arithmetic logic of action.
Principle of work:
Described visual phase battle array fire alarm system principle of work is, at first at monitor terminal with self-studying mode or the pre-alarm of artificial mode initialization system, directly report to the police, send the thermal radiation array sensor signal of the actions such as fire extinguishing signal and the threshold value of the outside fire alarm that accesses, real-time medial temperature data in each unit area that the thermal radiation array sensor will detect are sent to monitor terminal stored and showed with the form of matrix grid the regional correspondence of each probe unit on display screen real-time zone leveling Temperature numerical, the vision signal of visible light camera is sent to the monitor terminal storage and shows the video that is detected the zone by transport module after becoming consolidation form through data-switching, grid real time temperature mean value is compounded on the corresponding video pictures, the data communication device of external alert equipment is crossed the external signal interface module and the fire alarm that detects is sent to monitor terminal is stored and can show at the frame of display screen or the show bar on the corner, unusually raise when breaking through setting threshold when being detected regional somewhere portion temperature, system can be in conjunction with the data of other outside fire signal under system's automatic mode, send pre-alarm or alerting signal by predefined threshold value and arithmetic logic, also can directly command extinguishing device action fire extinguishing.Under artificial mode, reach when setting the pre-alarm threshold value when being detected unusual rising of regional somewhere portion temperature, its corresponding area grid can glimmer or change color is also sent the pre-alarm sound simultaneously, during other external interface alarm alerting signal, corresponding show bar ejects flicker or change color and sends simultaneously the pre-alarm sound on the screen, system will send alerting signal when actual state meets the alert if of default in advance, the monitor staff all can check relevant real time data at any time under the artificial mode, click grid or outside fire alarm show bar, can also derive its historical data table or change curve, in conjunction with the real-time video situation, the monitor staff can take the signal that gives the alarm, notice is checked on the spot, take the actions such as fire extinguishing measure, so not only can avoid reporting by mistake and fail to report but also can take the fire extinguishing measure in hidden danger or the commitment very first time that fire occurs.
Beneficial effect: compare native system with existing invention and possess following advantage:
1, the use of infrared Array sensor has overcome thermal imaging chip environments temperature above the rapid decline of precision after the nominal operation temperature (being generally 30 ℃) and the high shortcoming of cost, so that cost of the present invention is lower more than ten times than thermal imaging fire detecting system, simultaneously do not needing to use in the situation of cooling system and can work surpassing under 50 ℃ the environment, the secondary system exploitation is simple, practical, applied widely, be convenient to large-scale promotion and use.
2, all standing subregion temperature variation is surveyed, and, can be detected at electrical heating or the first combustion phases of object so that system possesses utmost point early fire detection function in conjunction with the miscellaneous cause signal, can prevent trouble before it happens, and greatly reduces fire damage.
3, visual, intelligent, can judge rapidly fire location and reason, avoid wrong report and fail to report the police, be convenient to take appropriate measures rapidly convenient operating maintenance.
4, self study setting, subregion Threshold, artificial interference set-up function make system convenient flexibly, and Applicable temperature changes greatly, the temperature difference complicated place greatly between object, the saving Installation and Debugging time.
5, system compatibility is strong, the temperature value Overlapping display has overcome the impact of the compound demonstration of thermal imaging on the sharpness of original video pictures, can be conveniently not rewiring transformation can form native system on former video monitoring system basis function can keep original video monitoring function again, save investment.
Description of drawings
Fig. 1 is embodiment () structural representation block diagram;
Fig. 2 is embodiment (two) structural representation block diagram;
Fig. 3 is embodiment () and embodiment (two) work-based logic schematic block diagram.
Embodiment
Below in conjunction with concrete accompanying drawing two exemplary embodiments of the present invention are further explained.
Embodiment (one) is a kind of visual mutually battle array fire alarm system based on concentric cable signal transmssion line and analog video camera, comprise N group (determining concrete quantity depending on field requirement) detecting terminal and monitor terminal, as shown in Figure 1, every group of detecting terminal comprises the thermal radiation array sensor, visible light camera, the external alert data interface module, signal Combined Processing transport module, monitor terminal is comprised of signal transmission module, DVR, single-chip microcomputer, display, and every group of detecting terminal connects monitor terminal through the concentric cable signal transmssion line.
The described visible light camera of embodiment () is analog video camera, and the visual angle is 60 °.
The described thermal radiation array sensor of embodiment () is selected the far infrared sensor of one group of HTPA-16X16-L3, the visual angle be 60.8 ° with video camera visual angle coupling, for all standing of satisfying 3 * 4 ratio video monitoring pictures can only process and show with 16 row in 12 row signals corresponding with video.
The described external alert data interface module of embodiment (), comprise that Smoke Detector signal input port, switching value signal revolution word signaling module, signal output port form, its input port is connected with the switching value Smoke Detector, and its output port is connected with signal Combined Processing transport module.
Embodiment (one) described signal Combined Processing transport module and signal transmission module adopt the SLOC concentric cable composite video Transmission of the global high performance analog mixed signal semiconductor Design and manufacture Intersil of leading manufacturer exploitation, and it can be by a coaxial cable while transportation simulator CVBS video and digital IP signal.The SLOC scheme is comprised of modulator-demodular unit PHY chip TW3801 and the receiver modulator-demodular unit PHY chip TW3811 based on SLOC based on the SLOC technology.The SLOC technology takes full advantage of mounted concentric cable infrastructure and supports the IP function of networking, TW3801 and TW3811 are highly integrated modulator-demodular unit PHY subsystems, comprising an AFE (analog front end) (AFE), digital modems and two ethernet medium interfaces (MII).TW3801 is with its analog video signal of receiving, thermal radiation array sensor digital signal, be combined into one to one one by the proprietary output signal of concentric cable transmission through the cigarette sense warning digital signal of conversion, TW3811 then carries out the equity decoding with it from the signal of receiving based on SLOC technology modulator-demodular unit PHYIC, so just the analog video signal of analog video camera and digital signal and the cigarette sense alerting signal of thermal radiation array sensing can be sent to monitor terminal.
The described monitor terminal of embodiment () is by receiver modulator-demodular unit PHY chip TW3811, single-chip microcomputer, DVR, display forms, single-chip microcomputer be can be compatible usually with the DVR of model, host computer as DVR commonly used connects DVR and display, integrated following functions also simultaneously, the infrared radiation signal that each infrared photosensitive unit of thermal radiation array sensor can be detected is converted into the zone leveling temperature value, and in grid cell lattice corresponding to display screen, show, and be compounded in by the actual detection position on the video image of correspondence, click any lattice and can derive its historical data table and transformation temperature curve, can manually set the medial temperature absolute threshold of each net region, surpassing threshold value selects the grid cell color to be faded to peony with the temperature rising and sent the pre-alarm prompting sound by pale red, can store and dynamically show the cigarette sense fire alarm of outside access, the as shown in Figure 3 threshold value of each alerting signal of initialization system and actuation of an alarm logic, can be according to the numerical value of thermal radiation array sensor signal and the outside cigarette sense fire alarm that accesses, by threshold value and the arithmetic logic set, the output pre-alarm sound, external panalarm is directly reported to the police, send the actions such as fire extinguishing signal.System possesses self-learning function simultaneously, after system installs on the spot through the prerun in one period cycle, according to recorded data, system is according to the computation model of setting in advance, temperature absolute threshold and the change threshold of each net region of automatic setting also can be adjusted threshold value and the arithmetic logic that pre-alarm, warning, fire extinguishing etc. are moved according to the learning outcome artificial interference.
The described visual phase battle array fire alarm system workflow of embodiment () is as follows, at first at monitor terminal with self-studying mode or the pre-alarm of artificial mode initialization system, directly report to the police, send the thermal radiation array sensor signal of the actions such as fire extinguishing signal and the threshold value of the outside cigarette sense fire alarm that accesses, the thermal radiation array sensor detect in the zone that the real-time medial temperature data in each dot matrix area territory are sent to that monitor terminal stores and on display screen the form with matrix grid show each zone leveling Temperature numerical corresponding to detection net region, the vision signal of visible light camera is sent to the DVR storage and is detected the video in zone by the single-chip microcomputer demonstration, the grid temperature-averaging value of processing through single-chip microcomputer is compounded on the corresponding video pictures, the detectable signal of external alert data-interface is sent to the single-chip microcomputer Storage and Processing and directly shows on the frame of display screen or the show bar on the corner, when being detected regional somewhere portion temperature and unusually raising, under automatic mode, system can be in conjunction with outside cigarette sense alerting signal, send pre-alarm or alerting signal by predefined threshold value and arithmetic logic, also can directly command extinguishing device action fire extinguishing.Specifically we can set 40 ℃ of a certain search coverage temperature and are warning first threshold point, 60 ℃ for the time be the second warning threshold point, 90 ℃ is the 3rd alarm threshold value point, cause wrong report for avoiding light to open caused moment temperature rise, zone with the light fixture place is set as the light fixture pattern simultaneously, and namely the temperature variation threshold value is made as 30 milliseconds of drastic changeizations of having to go to the toilet and surpasses in the situation that 10 ℃ and this district and temperature be no more than 70 °, does not respond, orientate as normally, do not send any pre-alarm and alert data.When being detected regional a certain grid temperature anomaly and being elevated to 40 ℃, if alerting signal is not sent in the cigarette sense, its corresponding area grid square frame color becomes pale red and sends simultaneously the pre-alarm hummer sound, point out observation, if this moment, outside cigarette sense interface also received alerting signal simultaneously, cigarette sense alarm indication bar corresponding on the screen will glimmer, and system will send the formal fire alarm sound this moment, can interrupt alerting signal through observing after video is got rid of emergency condition under the artificial mode.If system's outside cigarette sense interface receives alerting signal, and regional temperature is in 40 ℃, corresponding cigarette sense alarm indication bar will glimmer and send buzzer sound and ring the prompting monitor staff and note observing actual displayed temperature variations and real time video image on the screen, if find that disaster hidden-trouble can manually send alerting signal, in eliminating disaster hidden-trouble situation, can notify examination and repair system equipment.When being detected regional a certain grid temperature anomaly and being elevated to 60 ℃, its corresponding area grid square frame color becomes redness, even alerting signal is not sent in the cigarette sense, system also will start external panalarm and send the formal fire alarm sound this moment, after getting rid of emergency condition, video can interrupt alerting signal through observing under the artificial mode, if this moment, outside cigarette sense interface also received alerting signal, system will send formal fire alarm under the artificial mode, except sending formal fire alarm, system will send the fire extinguishing actuating signal and start the self-extinguishing program to fire extinguishing system under automatic mode.When being detected regional a certain grid temperature anomaly and being elevated to 90 ℃, even alerting signal is not sent in the cigarette sense, system also will send the formal fire alarm sound this moment, except sending formal fire alarm, system will send the fire extinguishing actuating signal and start the self-extinguishing program to fire extinguishing system under automatic mode.
Under any circumstance the monitor staff all can check relevant real time data at any time, click grid or outside fire alarm show bar, can also derive its historical data table or change curve, in conjunction with the real-time video situation, the action such as fire extinguishing measure is checked, taked to monitor staff's can take to give the alarm signal, notice on the spot, so not only can avoid reporting by mistake and failing to report but also can take the fire extinguishing measure in hidden danger or the commitment very first time of fire generation.
Embodiment (two) is a kind of visual mutually battle array fire alarm system based on networking signal transmssion line and IP video frequency pick-up head, comprise N group (determining concrete quantity depending on field requirement) detecting terminal and monitor terminal, as shown in Figure 2, every group of detecting terminal comprises the thermal radiation array sensor, visible light camera, the external alert data interface module, signal Combined Processing transport module, monitor terminal is by main frame, display, the network signal transport module forms, and every group of detecting terminal is connected to the network signal transport module of monitoring terminal through the network signal transmission line.
The described visible light camera of embodiment (two) is the IP video camera, and the visual angle is about 40 °.
The described thermal radiation array sensor of embodiment (two) is selected the MLX90620 far infrared sensor of 2 groups of 16X4, the visual angle is 40 ° * 15 °, two groups are arranged above and below, mate with the video camera visual angle, satisfy simultaneously 3 * 4 ratio video monitoring picture all standings, MLX90620 far infrared sensor has High Speed I 2C compatible with digital interface, employing be the synchronization trigger mode of tape control unit.
The described external alert data interface module of embodiment (two) is 8 tunnel interface modules with address code, wherein one the tunnel is the switching value interface, five the tunnel is the analog quantity interface, RS232, the RS485 digital signal interface each one the tunnel, it can compatible common standard the detection output signal, can be with such as the cigarette sense, carbonomonoxide concentration, combustable gas concentration, overload, short circuit, the output signal access that the outsides such as line temperature-sensitive degree are relevant with fire and the IP digital signal that converts to address code directly are connected to monitor terminal or pass through signal Combined Processing transport module with vision signal by netting twine, infrared Array sensor signal transfers to monitor terminal in the lump.
The described signal Combined Processing of embodiment (two) transport module has and gathers IP vision signal, I2C infrared signal, external alert IP signal and convert them the module of unified IP signal format output to, comprises IP video signal collective interface, the infrared array signals collecting of I2C interface, external alert IP signals collecting interface and IP signal output interface.
The described main frame of embodiment (two) and display, the information that possesses except computing machine itself, the storage of image, process, outside the functions such as demonstration, also possesses following functions after enrolling special software, the infrared radiation signal that each infrared photosensitive unit of thermal radiation array sensor is detected is converted into the zone leveling temperature value, and in grid corresponding to display screen, show, click any lattice and can derive its historical data table and transformation temperature curve, can manually set the medial temperature absolute threshold of each net region, surpassing threshold value selection grid cell color becomes pale red and sends the pre-alarm prompting sound, can store and dynamically show the fire alarm of outside access, referring to Fig. 3, the threshold value of each alerting signal of initialization system and actuation of an alarm logic, system can be according to the cigarette sense of thermal radiation array sensor signal and outside access, carbon monoxide, inflammable gas, the numerical value of the fire alarms such as electric fire alarm, by the threshold value of setting and the pre-alarm of arithmetic logic output buzzer, external panalarm is directly reported to the police, send the actions such as fire extinguishing signal, system possesses self-learning function simultaneously, after system installs on the spot through the prerun in one period cycle, according to recorded data, system is by the computation model of setting in advance, temperature absolute threshold and the change threshold of each net region of automatic setting also can be adjusted pre-alarm according to the learning outcome artificial interference, report to the police, fire extinguishing waits threshold value and the arithmetic logic of action.
The described visual phase battle array fire alarm system workflow of embodiment (two) is as follows, at first at monitor terminal with self-studying mode or the pre-alarm of artificial mode initialization system, directly report to the police, send the thermal radiation array sensor signal of the actions such as fire extinguishing signal and the threshold value of outside each fire alarm that accesses, the thermal radiation array sensor with in the unit area of detecting in real time the medial temperature data be sent to that monitor terminal stores and on the display screen with the form of matrix grid compound being presented on the corresponding video pictures, the detectable signal of external alert data-interface is sent to monitor terminal and stores also and can show at the frame of display screen or the show bar on the corner, when being detected regional somewhere portion temperature and unusually raising under system's automatic mode, system can be in conjunction with the fire alarm of outside access, send pre-alarm or alerting signal by predefined threshold value and arithmetic logic, also can directly command extinguishing device action fire extinguishing.
For example in certain Engine Room, use native system embodiment (two), its outside fire alarm has, one road SD6600 type simulated amount photoelectric smoke detector is to utilize infrared light beam the principle of smog scattering to be carried out the detection of smokescope, detector constantly is converted into smokescope information analog signals and is sent to alarm controller, alarm controller carries out computational analysis to the detection data that transmits, the rate of change of output smokescope, the parameters such as intensity, and before not surpassing every meter 2% light extinction rate at smoke density, send the actuation of an alarm signal, one road combustable gas concentration analog quantity alerting signal take the diesel oil volatile matter as main detected object, one tunnel carbonomonoxide concentration analog quantity alerting signal, one road current electrical fire monitoring RS232 digital alarm device signal, the output electric leakage, overload, short circuit, digital alarm signal and the monitor datas such as phase shortage, two road key position contact type temperature sensor simulating signals, output cabin temperature of key part signal.At first be that system installs and sets, start self-learning function after system's installation, light fixture is all opened, after using 1 day with ship, data show that each probe unit net region maximum average temperature does not wait from 26 ℃ to 70 ℃, for the contactless temperature sensing fire alarm probe of tradition, it is when temperature is not more than 1 ℃ of speed rising with per minute that ship specification requires, when being lower than 54 ℃, air themperature do not do action, and temperature namely should be moved before surpassing 78 ℃, that is to say it is traditional temperature-sensing probe, in the overwhelming majority situation, because fire happening part heat is slowly to conduct to probe by air, so only have and when fire really occurs, just can satisfy alert and if send alerting signal, with reference to standard, we are take each unit grid zone leveling temperature of actual detection as benchmark, consider that detectable signal is average surface temperature rather than system's detecting terminal ambient air temperature of object itself, in that we unify each net region of initialization system and surpass reference temperature 30% and be warning first threshold point aspect the temperature rising absolute value, surpassing reference temperature 60% is the second warning threshold point, surpassing reference temperature 100% is the 3rd alarm threshold value point, aspect temperature increase rate, we are set under the prerequisite of temperature increase rate less than 5 ℃ of per seconds (opening the bulb temperature interference of sharply rising for avoiding light fixture), the temperature increase rate per minute is the first alarm threshold value greater than 1 ℃, greater than 5 ℃ be the second alarm threshold value, be the 3rd alarm threshold value greater than 10 ℃.Set SD6600 type simulated amount photoelectric smoke, signal is the first alarm threshold value at the light extinction rate of every meter 1% of smoke density, it is the second alarm threshold value when 2% light extinction rate or photoelectric smoke itself send the actuation of an alarm signal, it is the 3rd alarm threshold value in the time of 3%, setting combustable gas concentration sensor the first alarm threshold value is 100ppm, the second alarming value is 1000ppm, the 3rd alarm threshold value is 4000ppm, setting carbonomonoxide concentration analog sensor signal the first alarm threshold value is 50ppm, the second warning Threshold Alerts value is 200ppm, and the 3rd alarm threshold value is 1000ppm.Electric fire disaster monitoring RS232 digital alarm signal, by former factory setting value, the digital alarm signals such as its output electric leakage, overload, short circuit, phase shortage all are considered as the first alarm threshold value, it is 50 ℃ that two road key position contact type temperature sensor simulating signals are all set the first alarm threshold value, the second alarm threshold value is 80 ℃, and the 3rd alarm threshold value is 130 ℃.The pre-alarm condition of initialization system is that arbitrary signal surpasses the first alarm threshold value; The initialization system alert if be an above signal surpass the second alarm threshold value simultaneously more than one other signal surpass the first alarm threshold value, or four above signal values surpass the first setting threshold, or an above signal surpasses the 3rd alarm threshold value; Initialization system send fire extinguishing actuating signal condition be arbitrary signal surpass the 3rd alarm threshold value simultaneously more than one other signal surpass the second alarm threshold value, or five above signal values surpass the second alarm threshold value.
For helping further to understand duty and the advantage of embodiment (two), do further introduction below in conjunction with several frequently seen fire generating process and detection alarm situation.
The disaster hidden-trouble stage: except flash burn and blast, the generation of general fire has a temperature progressively to be elevated to certain value and the fire goods that ignite lead to the process of big fire, this temperature raise but not the process of actual initiation fire we can be called the disaster hidden-trouble process, and this process is easy to be surveyed by infrared Array sensor and cause that being detected unusual rising of territory element grid Temperature numerical surpasses first threshold, its corresponding area grid cell colors became pale red and sent simultaneously the pre-alarm hummer sound this moment, point out, a certain amount of smog will be followed if glow, the concentration signal that cigarette sense this moment and carbon monoxide transducer detect will reach the first alarm threshold value very soon, system's display interface meeting appliance for releasing single smoke sense or carbon monoxide transducer surpass the relevant real time data of first threshold and send pre-alarm buzzing prompt tone, this type of situation can judge that substantially existing disaster hidden-trouble exists, and takes immediate steps and can eliminate hidden danger.Smokeless temperature anomaly rising disaster hidden-trouble is the heating process that electric fault causes mostly, if related electric equipment generation electric fault, system's display interface shows automatic spring the electric leakage of electric fire disaster monitoring RS232 digital alarm equipment output, overload, short circuit, real time data and the trouble spot alerting signals such as phase shortage, and send pre-alarm buzzing prompt tone, if there be this moment unusual rising of grid cell Temperature numerical to surpass first threshold, substantially also can judge that existing disaster hidden-trouble exists, should judge electric fault cause and faulty line according to the equipment alarm signal immediately, and in conjunction with the temperature anomaly raised position, get rid of electric fault and can eliminate hidden danger.It is also more serious that the fire that flash burn and blast cause often develops very fast consequence, but this type of fire usually occurs in the inflammable gas place of (comprising combustible volatile), and only have when inflammable gas reaches and just can cause flash burn or blast when any point temperature reaches flash-point in finite concentration and the environment and cause fire, so relevant real time data of system's display interface automatic spring combustable gas concentration and send pre-alarm buzzing prompt tone when the combustable gas concentration sensor reaches the first alarm threshold value, this moment, combustable gas concentration may differ greatly from the limiting concentration that flash burn or blast occur, but also must cause enough attention, should pay close attention to net region temperature rising situation particularly highest temperature region cause flash burn and blast to prevent that temperature from raising, check simultaneously the electric leakage of fire hazard monitoring RS232 digital alarm equipment output, overload, short circuit, real time data and the alerting signals such as phase shortage, avoid electric arc or electric spark to cause fire to occur, look into the personnel of seeing if there is at the scene by video simultaneously, should notify immediately at the scene the related personnel to stop the behavior that all may cause flash burn or explosive fire accident if any personnel, then dispatching officers in accordance with regulations to search reason removes a hidden danger, should notify immediately the field staff to withdraw, take again corresponding measure to remove a hidden danger if having other alerting signal to reach the first alarm threshold value this moment.When above-mentioned arbitrary situation occurs, the duty personnel all can adopt and transfer every signal data, observe video, the notice scene checks etc. that measure ascertains the reason, after determining to get rid of disaster hidden-trouble, can eliminate the pre-alarm signal by hand-reset, the follow-up supervention that resets goes out can the manual setting relevant grid medial temperature benchmark of pre-alarm signal to reasonable value, or adjust and set other detectable signal first threshold to reasonable value, but must not surpass 25% of former setting value, still answering system and the sensor of pre-alarm overhauled after adjustment was set.Because embodiment (two) is lower in the setting of the first alarm threshold value of each road signal of pre-alarm stage, and the precision of IR array detectors reaches ± 1 ℃, temperature anomaly regional location another order on video is clear, again in conjunction with other external alarm signal, the duty personnel can judge rapidly hidden danger position and reason, be convenient to rapid disposal, glow so substantially can get rid of, electric heating, flash burn, the disaster hidden-trouble that blast etc. causes, so native system not only can just can forecast at fire extremely in early days, even can just can find and prevent in the disaster hidden-trouble stage, and do not need to send formal alerting signal.
Warning stage is the fire stage of development namely: generally can follow local temperature significantly to rise when fire occurs, the phenomenons such as rising of a large amount of smog and carbonomonoxide concentration, the alert and if the computational logic that set in conjunction with related specifications, the described fire alarm system of embodiment (two), not only can promptly and accurately send fire alarm signal, also possesses following advantage, owing to adopt the signal of sensor output mostly to be continuous digital quantity and analog signals, generally owing to damaging the no signal fault that causes, sensor is easy to by computer diagnostic, the setting of the first lower alarm threshold value, so that system just can find the signal drift fault of sensor usually in the forecast stage, combined with intelligent logical calculated and arbitration functions can be avoided in the wrong report of fire stage of development or do not report.
Fire extinguishing action phase: because the intrinsic characteristics of Prospect of Marine Fire Protection system; for fire alarm startup naval vessel, cabin automatic fire extinguishing system occuring when fire alarm signal occurs can lead the cabin damage and bring huge economic loss; and the damage in important cabin tends to cause the paralysis of whole ship control system or power system; boats and ships out of hand or power will face larger danger at sea; when therefore traditional boats and ships fire hazard monitoring system sends fire alarm signal; because wrong report is more; again can't perception and the real-time presence states of assessment; generally do not start immediately automatic fire extinguishing system on the naval vessel during breaking out of fire alarm; when receiving fire alarm; the commanding can check at the scene of dispatching officers first usually; but because naval vessel passage complexity is very long; return to report the developments Deng the relevant personnel and take measures again; usually can be because the delay of time causes fire spread to enlarge even produces the serious consequence that can't put out a fire to save life and property; in the present embodiment; since the commanding can the real time inspection video and alarm region temperature and other warning real time data comprehensively judge; so can take the most appropriate measure to avoid spreading of fire in the very first time, the loss that at utmost fire is caused drops to minimum.Simultaneously when naval vessel start-up system fire-protection equipment, often to seal fire the cabin occurs, owing to implement (two) described system discovery fire early, often detecting devices can also work in fire extinguishing procedure, this moment, the commanding can observe by monitor terminal the actual effect of fire extinguishing, damage fully even the cabin detecting terminal fire breaks out, whether can also in time grasp fire by other detecting terminal spreads to and closes on the cabin, whether convenient decision-making takes further measure, avoid excessively fire extinguishing or inappropriate abandoned ship instruction, the naval vessel loss that fire extinguishing procedure is done to cause drops to minimum level.
Claims (6)
1. fire alarm system, be specifically related to a kind of visual phase battle array fire alarm system, be used for the alert and fire alarm of fire early prediction in the complex environment space, it is characterized in that system comprises detecting terminal and monitor terminal, its detecting terminal comprises the thermal radiation array sensor, visible light camera, the external alert data interface module, signal Combined Processing transport module, it also can be the N group that detecting terminal can be one group, monitor terminal is comprised of data transmission module and data storing processor and display unit, detecting terminal process signal wire is connected to the data transmission module of monitor terminal, and the real time temperature of search coverage shows at display with the form of numerical value array.
2. warning system according to claim 1 is characterized in that the thermal radiation array sensor is that primary structure is the sensor that infrared photosensitive first array and lens form, the focussing force of scioptics makes the corresponding infrared radiation metering of surveying each unit area of each photosensitive unit of sensor, and be converted into electric signal, final with the medial temperature of unit area or the form of thermal exposure numerical value, show for monitoring terminal processes and array, its lens and visible light camera lens coupling, with the physical location of each unit detection of assurance thermal radiation sensor array and the position consistency of video image demonstration, has the characteristic with adapting to than the high workload environment temperature with low cost.
3. warning system according to claim 1 is characterized in that visible light camera can be that common camera also can be panoramic camera.
4. warning system according to claim 1 is characterized in that the external alert data interface module is and to convert the systematic unity data layout to the interface arrangement of monitor terminal transmit outer alerting signal with other signal relevant with fire access such as cigarette sense, carbon monoxide, overload, short circuit, line temperature-sensitive degree, can be that access one road signal also can access N road signal, its signal can transfer to monitor terminal by one road signal wire through compound signal transmission module and vision signal and thermal radiation array sensor signal, also can independent one the tunnel transfers to monitor terminal.
5. warning system according to claim 1 is characterized in that the compound signal transmission module is that the signal that possesses thermal radiation array sensor, visible light camera, external alert data interface module can be incorporated into the module that one road signal wire is transferred to the detecting terminal function after treatment.
6. warning system according to claim 1 is characterized in that described data storing is processed and display unit is comprised of data storage processing device and display, the data storing processor is by single-chip microcomputer, PLC, DVR, one or more compositions in the equipment such as computing machine, mainly possesses following functions after enrolling specific software, average temperature value or heat radiation value that the infrared radiation signal that each infrared photosensitive unit of thermal radiation array sensor can be detected is converted into each unit area carry out record, store and demonstration, the detection numerical value in each probe unit zone can be compounded in the form of unit numerical value array on the video image and show in real time during demonstration, the numerical value of the variation in each grid to should the zone real-time average temperature value or heat radiation value, and the detecting location of the unit area of each grid representative and coupling corresponding with the position shown in the video image, click one or several unit grid and can also derive its historical data table or transformation temperature curve, system can manually set medial temperature absolute threshold and the change threshold of each net region, surpass threshold value and can select the variation of grid cell color, the flicker of grid cell, send the pre-alarm prompting sound, system can also store and dynamically show the fire alarm of other outside access, threshold value and the warning arithmetic logic of each alerting signal that can initialization system, system can be according to the numerical value of thermal radiation array sensor signal and the outside fire alarm that accesses, comprehensively set threshold value and arithmetic logic and select pre-alarm, directly report to the police, send the actions such as fire extinguishing signal, simultaneity factor software possesses self-learning function, after system installs on the spot through the prerun in one period cycle, according to recorded data, system is by the computation model of setting in advance, temperature absolute threshold and the change threshold of each net region of automatic setting also can be adjusted pre-alarm according to the learning outcome artificial interference, report to the police, fire extinguishing waits threshold value and the arithmetic logic of action.
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| TR01 | Transfer of patent right |
Effective date of registration: 20200707 Address after: 212000 Research and Development Zone, 99 Dingmao Chuqiao Road, Zhenjiang New District, Jiangsu Province, 32 Patentee after: JIANGSU HONGRAN INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: Two road 212009 Zhenjiang city in Jiangsu Province Economic Development Zone No. 21 South Patentee before: Zhu Qing |