CN1462418A - Self-aspirating fire detection system - Google Patents
Self-aspirating fire detection system Download PDFInfo
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- CN1462418A CN1462418A CN02801569A CN02801569A CN1462418A CN 1462418 A CN1462418 A CN 1462418A CN 02801569 A CN02801569 A CN 02801569A CN 02801569 A CN02801569 A CN 02801569A CN 1462418 A CN1462418 A CN 1462418A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
- G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
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Abstract
The invention relates to a self-aspirating fire detection system and to a method for operating the same, by means of an aspirating device (1, 3, 10) for controllable aspiration of ambient air from a supervised area. Said fire detection system includes a high-sensitive optical scattered light measuring system (2, 16), with a high-energy light source (4) and one or several receiver elements (6, 8), for detecting an optical radiation, scattered on smoke particles, located in the measuring area, in one or several angles of dispersion. The receiver elements (6, 8) of the scattered light measuring system (2, 16) are connected to a microcontroller system (13) and/or a central fire alarm system (15) for data analysis and storage. According to the invention, one or several gas detectors (9) and/or a gas detector array (9) are also arranged in the fire detection system, said detectors detecting at least one fire gas type, and connected to the central or local microcontroller system (13) and/or to the central fire alarm system (15) for signal evaluation.
Description
The present invention relates to a kind of, self-priming pull station of being used for monitoring technology equipment, buildings and storehouse breaking out of fire as described in the preamble as claim 1.
For self-priming pull station, be construed as fire alarm system, this system has one or more suction tubes, and its SS takes out and is transported to the fire alarm detecting device that is used to detect different fire trouble parameters with the air sample from wanting monitored equipment or area of space.
As the suction measure that produces continuous air flow from the monitored area, often use fan or fan blower, but also can use different piston pumps or membrane pump.
Only produce under the situation of monitoring range that pettiness heat and smoke particle also arrive the fire alarm detecting device of remotely settling usually very lentamente for low-temperature burning, it is favourable adopting self-priming system.This is especially this situation in than large space and storehouse.Adopting more highly sensitive self-priming system in air-conditioning that produces part exchange of air stream and strong dilution effect and force ventilated space is very favorable for early detection.
For traditional non-self-priming system, alarm was triggered and incurs loss through delay the fire extinguishing measure of back in the moment that quite postpones, and this much bigger property and personnel's infringement can occur compared with triggering the situation of reporting to the police early.
For air-conditioning and forced draft equipment, no suction system almost can not be realized EARLY RECOGNITION because under the sort of situation since the stream condition that self changes go out present condition at fire and can produce thermal convection hardly.
Another advantage of self-priming system is, SS can be positioned at determine adventurous equipment region, as the inside of electrical control cubicles shell or EDV (electronic digit processing) equipment, so the air sample can directly be obtained and collect together from the hazardous location of specific installation object.Can detect the condition of a fire that occurs at equipment region thus early and take the suitable precautionary measures.Plan generally only using highly sensitive detecting device for self-priming system on the early stage condition of a fire identification meaning especially economically according to value set degree, fire risk and overall fire prevention.The most micro-thermal decomposition smoke particle product (cigarette ash or suspended particle) confirmed that the optical scattering light measurement system as high sensitivity detector is particularly suitable, even also can be detected.
This known system exist considerable variation scheme and mostly with LED or laser diode as the scattered light light source.Pass the volume of sample of measuring the highway section and scattering on the smoke particle that exists at this light beam by light emitted.The scattered light of non-uniform Distribution converts measurable electric signal to by one or more receiving elements (photoelectric detector) then.Wherein the size of scattered light scattering angle depends on optical wavelength, size and shape and the optical characteristics of smoke particle in the volume of sample.By the signal analysis of the receiving element that is arranged on different scattering angle, can infer the quantity of particle in the air sample.
In the volume of sample that is aspirated, detect in the current research of minimum smog aerosol, adopt the accurate measuring systems that increases high sensitivity and laser support.Therefore the superlaser ray has more accurate when smoke particle occurring and can detect the advantage of scattered light intensity better.Spectrum narrowband generation by laser is basic resulting measured value result's definition with the scattered light theory.Often increased the construction expenditure that is used for laser detection system and air sample chamber and gas delivery optimum coupling significantly for this reason.
The defective of high sensitivity system is to have the danger of the false alarm owing to producing unexpected non-important condition of a fire parameter (as smoke from cigarette) or interference or illusion parameter occur on detecting device, as thin dust or water vapour.For detection system, often be difficult to determine interference volume, and will distinguish non-important particle in the detection volume of detected smoke particle in order to discern the condition of a fire.
Therefore in fireproofing technique, carry out a large amount of control, disturb or the illusion parameter to distinguish, thereby get rid of wrong report as far as possible.The optical scattering light measurement system can be especially need not addition thereto ground, have advantage ground and be used for the place that those only calculate with small interference or illusion parameter area.These places are the process units of air-conditioning and clean area, EDV equipment, semiconductor and biology and telecommunications and communicator especially.Can find out obviously that from the above mentioned for to condition of a fire EARLY RECOGNITION, always require to have responsive detection system, and the influence of interference and illusion parameter can increase, this is conflicting.
A kind of method and a kind of device of discerning the condition of a fire according to the principle of suction air sample that detects airflow described in DE 19605637 C1.From the room air of monitored hazardous location or cooling air, take out representational share and be transported to the detecting device of identification condition of a fire parameter by two suction tube systems.
An important prerequisite discerning the condition of a fire early is to be identified in the suction tube system to disturb unexpectedly, for example by the obstruction of evaluation SS or the interruption of suction tube system.At this, continuously certain volume of air is transported to the warning chamber and plays an important role.In order to achieve this end, suggestion is respectively used an airflow sensor for two suction tubes, and its output signal is used for compensation and monitoring airflow.As the measure of another reliable detection condition of a fire parameter, suggestion is provided with second detecting device in the second warning chamber of alarm.But but be not described in detail for its mode or application.
The purpose to the research of self-priming pull station that great majority are at present known is, is implemented in the formation stage EARLY RECOGNITION condition of a fire reliably just.
On suction system or susceptibility (action threshold value), many improvement have been carried out at used (optics) detecting device for this reason.For the susceptibility of improving detecting device and make and disturb or the influence of illusion parameter is very small has proposed multiple different suggestion.
By the known fire alarm system of DE4231088 A1, this system comprises a smoke-detectors according to the work of scattered light principle, and its scattered light receiver can be positioned at different scattering angle.To advise in order obtaining to be arranged in the exact image of volume of sample particle, the optical scattering light measurement system additionally to be equipped with the polarization ratio of polarization filtering mirror and definite scattered light.Infer definite smog type according to the clear and definite correlativity between polarization ratio and the scattering angle then.Stored the threshold value figure of different smog types by the test experiments that catches fire in database, the result with these figures and scattered light and Polarization Detection compares then.Then according to the indication that relatively draws fire type of two smog figures.
In this known pull station, distinguish reliably for the interference that how will always exist and illusion parameter with as the smoke particle that condition of a fire parameter occurs and also not add explanation.
Therefore, known defect by prior art proposes purpose of the present invention,, provides a kind of pull station that is, even this pull station also can detect the condition of a fire in time in the situation that interference or illusion parameter occur, and distinguishes reliably for the condition of a fire and the unessential condition of a fire parameter of ignition process.Can produce different alarm level corresponding to the condition of a fire according to pull station of the present invention in addition, its allows to adopt stepless elasticity fire extinguishing measure.Can when improving system sensitivity, realize minimizing of wrong report frequency at this.
According to the present invention, this purpose realizes by the feature of first claim.
Provide of the present invention other in the dependent claims and have the expansion structure of advantage.
Replenish high sensitivity optical scattering light measurement system according to the present invention's suggestion by the one or more gas sensors of additional arrangement or a gas sensor array, and the logical operation that the measured value of each detecting device is produced alarm level.Not only scattered light measuring system but also gas sensor all are connected with microprocessor system and/or fire alarm center on signalling technique at this.The invention still further relates to a kind of method of moving this pull station, the method is characterized in that, according to being arranged on the detected measurement parameter of receiving element in the different scattering angle of optical scattering light measurement system and forming summation signals by additional gas sensor and/or the detected measurement parameter of gas sensor array that is provided with.In the particularly advantageous structure of the present invention, the receiving element of scattered light measuring system is arranged on forward and scattering direction backward is interior and its signal Processing is set like this, promptly, characteristic parameter for the particle in certain volume of sample, as grain color, size and concentration, can by be captured in simultaneously forward with the back scattering angle scope in detected signal determine.
Gather simultaneously and handle that the light ray of scattering is a particular importance under the different angles by measuring system and reception-microprocessor system.Only the distribution of particles that is engraved in when certain in the volume of sample just can be described exactly by gathering simultaneously with handling from the scattered light signal of different scattered light angles, this is that its parameter constantly changes according to the aspirator through flow velocity because there is not static numerical value in volume of sample.
In another favourable expansion structure of the present invention, in according to self-priming pull station of the present invention, multi-form fire detector can also be set, as temperature alarm or Tobacco pipe with ion generator fog siren, and on signalling technique, be connected with microprocessor system and/or fire alarm center.At this, in the suction streams that preferably detecting device and gas sensor directly is arranged in aspirator, also it can be arranged in the bypass of suction tube.
According to the present invention, the measurement parameter of being gathered in volume of sample by above-mentioned fire detector also can add in the signal Processing of pull station, and passes through correspondingly weighting of assessment algorithm (Bewertungsalgorithmen) by means of the numerical value of storing in database.
According to of the present invention, be used for detecting the fire fog particle, be combined in that pull station is used to detect burning gases has many advantages or/and the high sensitivity optical scattering light measurement system of the gas sensor of special burning hidden danger gas and/or gas sensor array is compared with known systems.In the fired state that carries out, when rising, temperature increased the perfect combustion product, as CO
2And H
2Dispersing of O and soot particulates and smog aerosol can be inferred different sizes and the smoke particle that distributes very exactly by high sensitivity scattered light measuring system.
To this, gas sensor not only can additionally detect the parameter that the condition of a fire takes place early, and can check measurement result with weight scattered light system by the measurement parameter of gas sensor or gas sensor array.As known, the additional gas sensor that is provided with is particularly suitable for detecting reliably the burning gases that just produce when taking fire, as CO, H
2, CH
4And the saturated and unsaturated hydrocarbon and the sulfide of long-chain.By each combustion parameter is carried out computing and logical process, can earlier reliably report to the police than at present known self-priming system.But have only when meet or exceed the optical scattering light measurement system definite threshold value signal evaluation (Signalauswertung) but, just produce the grade of reporting to the police when simultaneously gas sensor also detects burning gases with different pre-adjustment.The broadband gas analysis that sensor by adopting a plurality of detection gas with various types or sensor array can be realized institute's suction air sample.Another improvement of gas detection can realize by the burning estimated by sensing range or the knowledge of cryogenic gas type.
Other of cable shaft or instrument and equipment hollow with intermediate space in the cable, the joint that extend and to be connected be the most frequent reason that produces fire therein.
Overheated (the engbegrenzte Ueberhitzung) of most of narrow limits may cause low-temperature burning, wherein special material, gaseous product (pyrolysis gas) is released under various concentration as HCL.The gas sensor that uses in pull station can be selected from a large amount of different measuring sensors (gas sensor) according to the gas that will be examined and determine, and can detect the very gas concentration in the ppb scope of pettiness on the measuring technique.As detecting smoke particle, in gas sensor, obtain (condition of a fire test) and the corresponding condition of a fire figure of electricity storage by the optical scattering optical detection system.
The database of Bao Cuning is for example in the memory block of microprocessor system automatic coding and the measurement parameter use that records for actual of data as a comparison like this.Therefore, by according to the different Fire Alarms of pull station of the present invention to measured measurement parameter compare with weight can be early and discern the condition of a fire reliably.Because the false alarm that interference or illusion signal cause can farthest be excluded.If the data of fire alarm recognition device or a plurality of this devices are by a central monitoring unit, preferred fire alarm center, handle, then by inquiring that periodically each fire detector can also accurately characterize condition of a fire process in time and condition of a fire process analysis procedure analysis is provided.This point can very practicably be used to pass to countermeasure and be used for definite grading forewarning system time corresponding to hazard level.Within the scope of the invention, described pull station can not have the operation of self-suction system ground yet.Therefore can be arranged on ventilation shaft or similar place fully according to pull station of the present invention with the through-flow air-flow of certain flow rate.Sample obtains then and for example can realize by the perforate of corresponding size on the pull station shell.
By means of accompanying drawing and an embodiment other details of the present invention is described now.
In the accompanying drawing:
Fig. 1 is according to the pull station with suction tube of the present invention,
Fig. 2 is the signal processing flow figure of scattered light measuring system and the additional detecting device that is provided with,
Fig. 3 is the block scheme that each system of pull station forms.
Fig. 1 illustrates according to pull station 2 of the present invention, and it is connected with the equipment or the area of space of possible breaking out of fire that will be monitored by suction tube 1.
A plurality of suction tubes with a plurality of SSs also can be set in another form of implementation, and perhaps suction tube can be made of flexible flexible pipe, and its perforate is from unapproachable equipment region suction air.
By air exhauster 3 with adjustable constant flow rate suction air sample and be transported to the measuring chamber (volume of sample) of pull station 2 continuously.Under the situation of considering the maximum permission handover time, it is long that the suction pipe network for example can be designed into 200m.Compare by the flow velocity of pneumatic sensor 10 measurement institute suction airs and with the theoretical value that is provided.When exceeding deviation, trigger fault alarm.
At this, light source 4, receiving element 6,8 and focus lamp 5,7 are isolated with the smog gas sample volume that is aspirated by glass shielding (Plexiglasabschirmung) (not shown) respectively.For the use zone that is used to have higher air speed,, also can adopt so-called bypass technology as use zone for exhaust or air-conditioning duct.At this, from passage that will be monitored, take out the air sample constantly and can also gas sensor 9 can be set there by the measuring chamber conveying of scattered light measuring system by piping system.
In canonical measure structure shown in Figure 1, highly sensitive smoke particle measuring system 16 shields with the right angle setting and by above-mentioned glass with respect to airflow.Measuring system is by the high energy narrow-band light source, opposed collection of rays device and each are collected and 5,7 of focus lamps are formed with it, narrow-band light source preferably has the laser diode 4 that is used for producing the band collimating mirror of scattered light intensity on the smoke particle of collimation focus, and focus lamp arrives the scattered light imaging in the segment angle of affiliated space on each receiving element 6,8 (fluorescence detector).In order accurately to analyze, it is as much as possible little that detection volume will keep, and basically in the scioptics system focus xsect volume of the diameter of laser beam on this collimation focus determine.At this, receiving element 6,8 and collection and focus lamp 5,7 are set like this, make from forwards to detected with the scattered light rays of backward directions space segment angle.
Forward and the light of scattering backward on receiving element, produce one with the proportional electric signal of the scattered light intensity that is received, this signal is handled and is stored in microprocessor linked system 13 of institute and/or fire alarm center 15.
The measured value that obtains according to this measuring principle on ratio corresponding to smoke particle concentration, but also corresponding to particle characteristics, as shape, color and size.In a kind of favourable condition of a fire recognition system form of implementation, high energy light source (for example laser diode) is controlled by pulse-excited circuit, the serviceable life that this improves light source with several times ground.
Have only in the time of will carrying out new scattered light measurement, the light pulse of modulation is just triggered by control electronics 13.According to the present invention, one or more gas sensors 9 or a gas sensor array of being made up of a plurality of gas sensors are arranged on suction streams or bypass the inside, and are connected with microprocessor system 13 and/or fire alarm center 15 by signal conductor.At this, can use different gas alarms or gas sensor array, detect burning gases different, that characterize incipient fire generation state.The gas that this burning gases produce especially in early days is as CO, H
2, CH
4And the saturated and unsaturated hydrocarbon and the sulfide of long-chain, but also may be the gas (as HCL) that special disaster hidden-trouble is arranged, for example the gas that produces in thermal decomposition of PVC can detect reliably by using special gas sensor.Can carry out the logical process and the computing of scattered light signal by the measured value of gas sensor according to intelligent condition of a fire identification of the present invention.According to the present invention, in order to carry out the signal Processing of scattered light signal and other detector signal, and, also can use one or more microprocessors as the computing unit that disperses according to the analysis criterion that is adopted.
Each method step that is used for fire recognition device signal Processing shown in Figure 2.
The direction of light and the intensity that scatter on the particle according to the Mie scattering light theory (Mie-Streulicht-Theorie) that is applied to the scattered light measuring system depend on coating of particles, color and size and optical wavelength.If known optical wavelength, luminous power and scattering angle are set and measured scattered light intensity is carried out logical operation, then can infer characteristic and the distribution (concentration) of smoke particle in volume of sample by corresponding receiving element.More accurate conclusion obtains by the scattered light intensity measurement more than two scattering angle 17,18,19.According to the present invention, to forwards measuring synchronously and analyze and produce a good operational conclusion that is used for determining the condition of a fire to the light component 17 of scattering and the light component 18 of scattering backward.Verified in giving embodiment, the required fan-shaped scattering angle numerical value of respectively measuring passage to being about 20 ° ± 4 °, and is 160 ° ± 4 ° in backward directions forwards in the reality.Other scattered light pick-up unit (receiving element) is preferably disposed in the angular range of intensity acute variation between 5 ° to 45 °.Can obtain one or more intensive parameters then by the vector of the scattered light intensity relevant and determine one or more particle characteristics parameters by the logarithmic relationship of the scattered light intensity relevant with angle with angle.After gathering the numerical value of each scattered light intensity by different space angle 17,18,19, it is a characteristic vector (for example according to size, color and refractive index classification) that these numerical value are standardized in next method step 20.The comparing data of in smog aerosol database 21, storing calculating smog characteristic allowable.22 will become smog-synchronization parameters by the comparing data logical operation of 20 characteristic vectors that obtained and storage in 21 then.Smog-the scattered light intensity of high-sensitivity measurement circuit 23 is assessed by the measurement parameter that is obtained by gas sensor 24 in method step 27.
Additionally also can assess the measurement parameter of the smoke transducer of selecting (Tobacco pipe with ion generator fog siren or optical smoke alarm) 25 and/or the temperature alarm 26 of selection.The assessment of each measurement parameter and mutual relationship realizes that by means of algorithm and comparative analysis algorithm and comparative analysis can utilize the data of check fire in the database 28.
Other method regulation, the summation signals that will be obtained by method step 27 and the threshold value of predistortion parameterization compare, and corresponding result is transported to warning level 29 corresponding to controller and display.Also additionally regulation selects individual monitor or single controller 30 in the special parameter warning level to compare with corresponding certain threshold level.For example CO reports to the police and just can be triggered when surpassing maximum concentration, and disregards other measurement parameter.For scattered light measuring system 16, also can establish a selected warning level individual monitor or a single controller.
Fig. 3 illustrates the block diagram of system according to fire alarm installation of the present invention.Two highly sensitive metering circuits 32 and 33 are handled respectively by receiving element 6,8 scattered signals that provided.By the control of laser pumping circuit 34 pulse forms ground, wherein pulse is provided by microprocessor system 13 laser diode as light source.What have advantage is that diode laser only constantly is energized in measurement, thus the serviceable life of several times prolongation laser instrument.Gas sensor 35 is connected with microprocessor system 13 by the A/D conversion equally with the temperature sensor of selecting 37.Sample-and-hold circuit 36 particular importances, this circuit can realize the synchronous acquisition of scattered light measured value by the trigger pulse of microprocessor system.Thus, can access about the smog concentration of aerosol that in volume of sample, comprised and the accurate information of characteristic according to the present invention, especially the further processing of selection can make to(for) the statistical conclusions of the appearance characteristic (Auftrittsverhalten) of the particle characteristic parameter of determining.Microprocessor system 13 execution analysis algorithms are also assessed gas and aerosol background that scattered light is measured the communication of loop, storage data and result, the control demonstration fixed according to incident and peripheral cell, execution and attachable peripherals 38 and the compensation sensitive scattered light loop relevant with environment drift about (Aerosolhintergrunddrift).
Reference numeral table 1 has the beam dump of the beam dump of aspirator 2 pull station 3 air exhausters, 4 high energy narrow-band light source (for example laser diode) 5 first scattered light measuring circuits of suction tube and focus lamp 6 first-scattering angle receiving elements (detector) 7 second scattered light measuring circuits and focus lamp 8 second angle of scattering receiving element (detector) 9 gas sensors or sensor array 10 pneumatic sensors, 11 temperature alarms or heat sensor 12 Tobacco pipe with ion generator fog sirens or optical smoke alarm 13 microprocessor systems (to be used for measuring control, data analysis and storage) 14 demonstration and control module (relays, LCD, LED) 15 fire alarm centers (building Host Technology equipment, dispatching desk-PC)
Fire alarm recognition device signal processing flow figure mark illustrates the smog that the standardization 21 smoke particle databases (allowing the comparing data of the smog characteristic known) 22 of scattered light intensity 20 feature vector values of scattered light intensity 19 scattering angle α n of the scattered light intensity 18 scattering angle α 2 of 16 high sensitivity smoke particle scattered light measuring systems, 17 scattering angle α 1 are processed into smog characteristic strength value 23 high-sensitivity measurement loops 16 by 21 feature vector and appearance characteristic in time-scattered light intensity 24 gas sensing devices (the gas sensing device catches fire) or sensor array (for example CO sensor) 25 selectable Smoke Detection device (ion smog detectors, the optical smoke detector) 26 selectable temperature alarming devices (temperature sensor) 27 by 29 and temporal correlation be cumulative signal with scattered light and gas sensing device strength assessment, the threshold value that the measurement parameter 28 that also can select to consider temperature alarming device 26 and Smoke Detection device 25 is assessed computing 29 cumulative signals and predistortion parameter by the test ignition database library of knowing is relatively, control also shows that relevant alarm level 30 is according to the selective single demonstration of alarm level of each characteristic value that relatively draws of each threshold value or control the selective single demonstration of alarm level or the control of the early stage alarm of 31 high sensitivity scattered light measuring systems
33 back scattering angle scope high-sensitivity measurement loops, description of symbols 32 forescatering angular region high-sensitivity measurement loops, the 34 laser pumping circuit of the block diagram of system among Fig. 3 only pass through μ P pulsed operation 35 gas sensor measuring circuit 36 sample-and-hold circuits, 37 selectable temperature and/or Smoke Sensor measuring circuit 38 periphery configures and control module (configuration and monitoring PC, fire alarm and fire extinguishing control centre) in Measuring Time
Claims
(according to the modification of the 19th of treaty)
1. be used to monitor and catch fire and/or the equipment of explosion danger and the self-priming pull station of buildings, comprise an aspirator (1 that is used for controllably from the monitored area draws ambient air, 3,10), the scattered light measuring system (2 of a highly sensitive optics, 16), this system has a high energy light source (4) and at least two receiving elements (6,8), described receiving element is used to detect with one or more scattering angle and is scattered in illumination rays on the smoke particle that is positioned at measured zone, the receiving element (6 of scattered light measuring system (2) wherein, 8) be connected with microprocessor system (13) and/or fire alarm center (15) and carry out data analysis and storage, it is characterized in that
-one or more gas sensors (9) and/or a gas sensor array (9) additionally are set, they detect a kind of gas type that catches fire at least,
-and the microprocessor system (13) of same and central authorities or dispersion on signalling technique and/or fire alarm center (15) be connected and carry out signal Processing,
At least two receiving elements (6 of-scattered light measuring system (2), 8) be provided with in such a way with respect to sample stream measurement volumes from suction tube (1), promptly, can detect simultaneously in the forescatering angular region and the back scattering angle scope in, be scattered in the illumination rays on the smoke particle, and the measured value that obtains simultaneously can be treated as the measurement parameter that characterizes smoke agent in the measurement volumes in microprocessor system (13) or fire alarm center (15)
-carry out the selection of the alarm level that will control according to one or more measurement parameters, and can adjust according to the actual conditions of locality, monitored area or special application target.
2. pull station as claimed in claim 1, it is characterized in that, described one or more gas sensor (9) is arranged in the airflow of suction tube (1) or is arranged in the shunt valve, and take the photograph the spectrum meter or thermocolour transfers sensor to constitute by electrochemical gas sensor, semiconductor gas sensor, ion migration, be used for detecting catch fire gas such as CO, H
2, CH
4, and the saturated and unsaturated hydrocarbon and the sulfide of long-chain or the gas such as the HCL of special disaster hidden-trouble are arranged, wherein said sensor has different measurement ranges for different and/or identical gas type.
3. pull station as claimed in claim 2, it is characterized in that, other fire detectors (11 according to the work of different measuring principle are set, 12), for example Tobacco pipe with ion generator fog siren (12) or optical smoke alarm (12) (preferably have and sensitive different wavelength, the range of sensitivity or the measuring principles of scattered light system) and/or temperature alarm (11), they are connected with microprocessor system (13) and/or fire alarm center (15) on signalling technique equally, so that the measuring-signal that obtains in volume of sample is assessed.
4. operation is as the method for each described pull station in the claim 1 to 3, it is characterized in that, will be at the scattered light receiver (17 of scattered light measuring system (16), 18,19) scattered light signal that takes place one by one on is transferred to microprocessor system (13), and to sensor array provided by one or more additional gas sensors (9) or one, and the measured value that is transferred to microcontroller (13) equally carries out common processing simultaneously and obtains a summation signals (27), then the threshold value (29) of summation signals that will produce like this and predistortion parameter storage compares, and result relatively constitutes the triggering alerting signal or/and the judgement basis of alarm level.
5. method as claimed in claim 4 is characterized in that, is also included within the assessment of summation signals (27) by the additional Fire Alarm (11,12) that is provided with, the measurement parameter that produces as Tobacco pipe with ion generator fog siren (12) and/or temperature alarm (11).
6. method as claimed in claim 5 is characterized in that, the assessment of each detectors measure value is become a kind of fire process analysis by logical operation, and its result for example shows on (15,38).
7. as each described method in the claim 5 to 6, it is characterized in that, from each Fire Alarm (11,12,24,25,26), the cumulative signal of scattered light measuring system (13) and summation signals (27), the selection of the alarm level that realization will be controlled, and can adjust according to the actual conditions of locality, monitored area or special application target.
Claims (9)
1. be used to monitor and catch fire and/or the equipment of explosion danger and the self-priming pull station of buildings, comprise an aspirator (1 that is used for controllably from the monitored area draws ambient air, 3,10), the scattered light measuring system (2 of a highly sensitive optics, 16), this system has a high energy light source (4) and one or more receiving element (6,8), described receiving element is used to detect with one or more scattering angle and is scattered in illumination rays on the smoke particle that is positioned at measured zone, the receiving element (6 of scattered light measuring system (2) wherein, 8) be connected with microprocessor system (13) and/or fire alarm center (15) and carry out data analysis and storage, it is characterized in that, one or more gas sensors (9) and/or a gas sensor array (9) additionally are set, they detect a kind of gas type that catches fire at least, and the microprocessor system (13) of same and central authorities or dispersion on signalling technique and/or fire alarm center (15) are connected and carry out signal Processing.
2. pull station as claimed in claim 1, it is characterized in that, described one or more gas sensor (9) is arranged in the airflow of suction tube (1) or is arranged in the shunt valve, and take the photograph the spectrum meter or thermocolour transfers sensor to constitute by electrochemical gas sensor, semiconductor gas sensor, ion migration, be used for detecting catch fire gas such as CO, H
2, CH
4, and the saturated and unsaturated hydrocarbon and the sulfide of long-chain or the gas such as the HCL of special disaster hidden-trouble are arranged, wherein said sensor has different measurement ranges for different and/or identical gas type.
3. pull station as claimed in claim 1 or 2, it is characterized in that, the scattered light measuring system (2) of described optics has at least two receiving elements (6,8), they are provided with in such a way with respect to the sample stream measurement volumes from suction tube (1), promptly, can detect simultaneously in the forescatering angular region and the back scattering angle scope in, be scattered in the illumination rays on the smoke particle, and the measured value that obtains simultaneously can be treated as the measurement parameter that characterizes smoke agent in the measurement volumes in microprocessor system (13) or fire alarm center (15).
4. pull station as claimed in claim 3, it is characterized in that, other fire detectors (11 according to the work of different measuring principle are set, 12), for example Tobacco pipe with ion generator fog siren (12) or optical smoke alarm (12) (preferably have and sensitive different wavelength, the range of sensitivity or the measuring principles of scattered light system) and/or temperature alarm (11), they are connected with microprocessor system (13) and/or fire alarm center (15) on signalling technique equally, so that the measuring-signal that obtains in volume of sample is assessed.
5. operation is as the method for each described pull station in the claim 1 to 4, it is characterized in that, will be at the scattered light receiver (17 of scattered light measuring system (16), 18,19) scattered light signal that takes place one by one on is transferred to microprocessor system (13), and to sensor array provided by one or more additional gas sensors (9) or one, and the measured value that is transferred to microcontroller (13) equally carries out common processing simultaneously and obtains a summation signals (27), then the threshold value (29) of summation signals that will produce like this and predistortion parameter storage compares, and result relatively constitutes the triggering alerting signal or/and the judgement basis of alarm level.
6. method as claimed in claim 5 is characterized in that, is also included within the assessment of summation signals (27) by the additional Fire Alarm (11,12) that is provided with, the measurement parameter that produces as Tobacco pipe with ion generator fog siren (12) and/or temperature alarm (11).
7. method as claimed in claim 6 is characterized in that, the measurement parameter for the Fire Alarm of assessing by different additional settings (24,25,26) is provided is undertaken by the assessment operator that relatively is stored in the database (28).
8. as each described method in the claim 5 to 7, it is characterized in that, from each Fire Alarm (11,12,24,25,26), the cumulative signal of scattered light measuring system (13) and summation signals (27), the selection of the alarm level that realization will be controlled, and can adjust according to the actual conditions of locality, monitored area or special application target.
9. method as claimed in claim 8 is characterized in that, the assessment of each detectors measure value is become a kind of fire process analysis by logical operation, and its result for example shows on (15,38).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10124280A DE10124280A1 (en) | 2001-05-23 | 2001-05-23 | Self-priming fire alarm system |
| DE10124280.8 | 2001-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1462418A true CN1462418A (en) | 2003-12-17 |
Family
ID=7685294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02801569A Pending CN1462418A (en) | 2001-05-23 | 2002-04-15 | Self-aspirating fire detection system |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1389331B1 (en) |
| CN (1) | CN1462418A (en) |
| AT (1) | ATE292316T1 (en) |
| DE (2) | DE10124280A1 (en) |
| ES (1) | ES2239232T3 (en) |
| WO (1) | WO2002095705A1 (en) |
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| CN103026393A (en) * | 2010-08-11 | 2013-04-03 | 西门子公司 | Evaluating scattered-light signals in an optical hazard detector and outputting a dust/steam warning or a fire alarm |
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| CN109283108A (en) * | 2018-08-30 | 2019-01-29 | 安徽乐锦记食品有限公司 | A kind of bread processing anomaly alarming device |
| CN109983515A (en) * | 2016-11-11 | 2019-07-05 | 开利公司 | Detection based on high sensitivity optical fiber |
| CN112313720A (en) * | 2018-06-19 | 2021-02-02 | 瓦格纳集团责任有限公司 | Scattered light detector and aspirated fire detection system with scattered light detector |
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| AUPS056002A0 (en) * | 2002-02-15 | 2002-03-07 | Vision Products Pty Ltd | Improved smoke detector unit |
| DE10300848B4 (en) * | 2003-01-10 | 2005-02-17 | Hekatron Vertriebs Gmbh | Fire switch for ventilation systems |
| DE10344188B3 (en) * | 2003-09-22 | 2005-05-25 | Minimax Gmbh & Co. Kg | Device for fire, smoke and function monitoring of rotor blades in wind turbines and wind energy plant |
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| DE59106772D1 (en) * | 1991-08-14 | 1995-11-30 | Siemens Ag | Gas sensor array for the detection of individual gas components in a gas mixture. |
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- 2001-05-23 DE DE10124280A patent/DE10124280A1/en not_active Withdrawn
-
2002
- 2002-04-15 WO PCT/DE2002/001385 patent/WO2002095705A1/en active IP Right Grant
- 2002-04-15 DE DE50202632T patent/DE50202632D1/en not_active Expired - Lifetime
- 2002-04-15 EP EP02737792A patent/EP1389331B1/en not_active Expired - Lifetime
- 2002-04-15 ES ES02737792T patent/ES2239232T3/en not_active Expired - Lifetime
- 2002-04-15 CN CN02801569A patent/CN1462418A/en active Pending
- 2002-04-15 AT AT02737792T patent/ATE292316T1/en active
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| CN103026393A (en) * | 2010-08-11 | 2013-04-03 | 西门子公司 | Evaluating scattered-light signals in an optical hazard detector and outputting a dust/steam warning or a fire alarm |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1389331B1 (en) | 2005-03-30 |
| DE50202632D1 (en) | 2005-05-04 |
| DE10124280A1 (en) | 2002-12-12 |
| ES2239232T3 (en) | 2005-09-16 |
| WO2002095705A1 (en) | 2002-11-28 |
| ATE292316T1 (en) | 2005-04-15 |
| WO2002095705B1 (en) | 2003-03-20 |
| EP1389331A1 (en) | 2004-02-18 |
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