CN201867924U - Three-wavelength infrared flame detector - Google Patents
Three-wavelength infrared flame detector Download PDFInfo
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- CN201867924U CN201867924U CN2010206077714U CN201020607771U CN201867924U CN 201867924 U CN201867924 U CN 201867924U CN 2010206077714 U CN2010206077714 U CN 2010206077714U CN 201020607771 U CN201020607771 U CN 201020607771U CN 201867924 U CN201867924 U CN 201867924U
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Abstract
The utility model relates to a three-wavelength infrared flame detector which comprises three infrared induction circuits with different wavelengths and a single chip microcomputer connected with the three infrared induction circuits, wherein the infrared induction circuits respectively comprise an infrared sensor, an impedance matching and amplifying circuit and a filter circuit, which are connected in sequence; the filter circuit is connected with the single chip microcomputer; and the three infrared induction circuits respectively comprise an infrared sensor with a wavelength of 4.3 microns, an infrared sensor with a wavelength of 3.8 microns and an infrared sensor with a wavelength of 5.0 microns. As the three-wavelength infrared flame detector adopting the structure utilizes the infrared sensor with the wavelength of 5.0 microns as a reference wavelength and large difference is brought relative to a peak wavelength of 4.3 microns, the occurrence of false alarm is reduced, the accuracy of the flame detector is improved, simultaneously the interference of the thermal radiation of low-temperature objects can be eliminated and the whole reliability of the flame detector can be enhanced.
Description
Technical field
The utility model relates to the fire fighting equipment field, and particularly the flame detector field specifically is meant a kind of three-wavelength infrared flame detector.
Background technology
Flame detector is the fire fighting equipment of using always, is used for fire alarm and starts automatic spraying device.The infrared sensor that infrared flame detector uses, it is converted into the electric signal of varying strength by the infrared energy with the radiation of different wave length naked light, infrared flame detector according to sensor to electric signal discern and whether have naked light to exist; The electric signal that infrared sensor is produced by specific circuit carries out methods processing such as impedance matching, amplification, filtering, single-chip microcomputer collects the signal of infrared sensor, in conjunction with corresponding fire software algorithm, accurately judge the generation of fire, and send fire alarm signal.
When fire took place, the infrared ray of naked light Fire Radiation mainly concentrated in the middle infrared spectrum scope.The naked light that the hydrocarbon fire is produced when taking place has its distinctive spectral characteristic.As shown in Figure 1, the energy that burning things which may cause a fire disaster discharges is across ultraviolet, visible light and electromagnetic radiation wave band such as infrared, and most of concentration of energy is in infrared band, IR radiation at different wavelengths energy difference.Near the curved convex that occurs 4.3 microns of the infrared portions partly is to be called as CO
2The CO of sympathetic response
2The atomic group luminescent spectrum, it has absolute big radiation intensity than wire or the band spectrum that other atom, molecule or group sent in the flame.Recessed part is CO near infrared portion 3.8 and 5.0 microns
2The spectrum that radiation intensity is the most weak is in order to discern the infrared radiation that hot object sends.
The another one key character of naked light flame is that its emittance has scintillation effect.Though the influence of environment around the flicker frequency wind-engaging etc., but arrive within the 30Hz scope at 0.5Hz substantially.And the infrared radiation spectrum that hot object sends both had been different from the radiation spectrum that flame sends, and did not have the blinking characteristic of flame again.
Therefore, infrared flame detector is discerned flame by energy and glitter to the characteristic wavelength infrared radiation of flame, realizes the quick response of flame, and suppresses false alarm effectively.
The general 4.3 micron wave length infrared sensors that adopt of three traditional infrared flame detectors are as main detection channels, reference wavelength is 3.8 microns infrared sensors, again because the another one crest in the flame combustion process is 2.7 microns (this crest is more much lower than 4.3 microns amplitude), so adopt 2.7 micron wave length infrared sensors as the auxiliary wavelength of surveying.Its shortcoming is: during owing to generation naked light fire, 4.3 micron infrared sensor signal is bigger than 3.8 microns infrared sensor signals, this difference of flame detector general using is as the precondition of reporting to the police, and the infrared radiation centre wavelength of cryogenic object (as human body) is about 7.5 microns, if being subjected to the heat radiation of cryogenic object, disturbs by detector, can cause 4.3 microns infrared sensor signals more many greatly, can cause the flame detector false alarm than 3.8 microns infrared sensor signals.Simultaneously, in the flame combustion process, 2.7 the peak wavelength amplitude of micron is smaller, for satisfying the accurately signal of this passage of employing of monolithic function, must improve the enlargement factor of this channel circuit, because infrared sensor is the high impedance entering apparatus, receive external interference easily, and the enlargement factor of amplifying circuit is excessive, and it is very many directly to cause signal to noise ratio (S/N ratio) to reduce, and the stability and the reliability of detector caused harm.In addition, because the peak value of the absorption spectrum of water vapor also is about 2.7 microns, when detector is subjected to the water vapor interference, water vapor can sponge the radiation of 2.7 micron wave lengths that radiate in most of flame combustion process, the signal that directly causes 2.7 microns infrared sensors of detector to receive is extremely little, the phenomenon that detector can be failed to report.
Simultaneously, traditional infrared sensor amplifying circuit generally adopts operational amplifier that the electric signal of sensor is amplified and handles, because the output impedance of infrared sensor has reached 10 than higher
5The order of magnitude, very high to the input impedance requirement of operational amplifier, operational amplifier type selecting, buying and cost have been caused many inconvenience; If the input impedance of operational amplifier is not high enough, that is to say that the input impedance of amplifier and the output impedance of sensor do not match, can cause the sensor output signal amplitude fading, the detection overall performance of the sensor of influence.Simultaneously, the output signal of infrared sensor is very little, is microvolt signal, for satisfying the sampling request of single-chip microcomputer, must amplify the millivolt signal of sensor about 2,000 times, single-chip microcomputer could correctly be sampled, excessive enlargement factor, require the noise of amplifying circuit very low, increased the design difficulty of circuit, also reduced the reliability of detector, simultaneously excessive enlargement factor, introduce noise easily, the signal to noise ratio (S/N ratio) of circuit is difficult to control like this, is unfavorable for producing and debugging.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of and can avoid failing to report the phenomenon generation as far as possible, the effective control circuit signal to noise ratio (S/N ratio) of sensor amplifying circuit, guarantee the quality of induced signal transmission, simple in structure, with low cost, and range of application three-wavelength infrared flame detector comparatively widely.
In order to realize above-mentioned purpose, three-wavelength infrared flame detector of the present utility model has following formation:
The principal feature of this three-wavelength infrared flame detector is, described three-wavelength infrared flame detector comprises surveys three road different infrared induction circuit of wavelength, and the single-chip microcomputer that is connected with described three road infrared induction circuit, described infrared induction circuit includes infrared sensor, impedance matching and amplifying circuit and filtering circuit, the output terminal of described infrared sensor is connected described single-chip microcomputer by described impedance matching with amplifying circuit in proper order with filtering circuit, described three road infrared induction circuit comprise 4.3 micron wave length infrared sensors respectively, 3.8 micron wave length infrared sensor and 5.0 micron wave length infrared sensors.
In this three-wavelength infrared flame detector, described impedance matching and amplifying circuit are second amplifying circuit, and in the described second amplifying circuit, the voltage output end of higher level's amplifying circuit connects the voltage input end of subordinate's amplifying circuit.
In this three-wavelength infrared flame detector, described second amplifying circuit is a secondary junction field effect transistor amplifying circuit, and the voltage output end of higher level's junction field effect transistor amplifying circuit connects the voltage input end of subordinate's junction field effect transistor amplifying circuit.
In this three-wavelength infrared flame detector, also include the output follow circuit between the described secondary junction field effect transistor amplifying circuit, the voltage input end of described output follow circuit connects the voltage output end of described higher level's junction field effect transistor amplifying circuit, and the voltage output end of described output follow circuit connects the voltage input end of described subordinate junction field effect transistor amplifying circuit.
In this three-wavelength infrared flame detector, described filtering circuit is multistage low-pass filter circuit.Described each rank low-pass filter circuit all has the low-pass filter that cutoff frequency is 30Hz.
In this three-wavelength infrared flame detector, described single-chip microcomputer is 32 high-speed microprocessors, and described 32 high-speed microprocessors have three tunnel 16 analog to digital converters.The input end of described three tunnel 16 analog to digital converters connects the output terminal of described three road infrared induction circuit respectively.
Adopted the three-wavelength infrared flame detector of this utility model, because its three road infrared inductions circuit comprises 4.3 micron wave length infrared sensors, 3.8 micron wave length infrared sensors and 5.0 micron wave length infrared sensors respectively.It utilizes 5.0 micron wave length infrared sensors as the reference wavelength, this wavelength is the valley of the infrared radiation wavelength in the flame combustion process, it has very big drop for 4.3 microns with respect to peak wavelength, thereby can reduce the generation of wrong report, improves the degree of accuracy of flame detector; Simultaneously, it can carry out filtering to the background signal as 4.3 micron wave length infrared sensors of main detector passage, get rid of the cryogenic object heat radiation and disturb, thereby guarantee that detector energy correct detection to the cryogenic object thermal radiation signal, promotes the global reliability of this three-wavelength infrared flame detector.
Description of drawings
Fig. 1 is the hydrocarbon combustion spectral radiance map.
Fig. 2 is the structural representation of three-wavelength infrared flame detector of the present utility model.
Fig. 3 is an infrared sensor internal circuit configuration synoptic diagram in the three-wavelength infrared flame detector of the present utility model.
Fig. 4 is an infrared sensor circuit module structural representation in the three-wavelength infrared flame detector of the present utility model.
Fig. 5 is the electrical block diagram of three-wavelength infrared flame detector middle impedance coupling of the present utility model and amplifying circuit.
Fig. 6 is the electrical block diagram of output follow circuit in impedance matching in the three-wavelength infrared flame detector of the present utility model and the amplifying circuit.
Fig. 7 is the electrical block diagram of multistage low-pass filter circuit in the three-wavelength infrared flame detector of the present utility model.
Fig. 8 is the electrical block diagram of single-chip microcomputer in the three-wavelength infrared flame detector of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 2ly, be the structural representation of wavelength infrared flame detector of the present utility model.
This three-wavelength infrared flame detector comprises surveys three road different infrared induction circuit of wavelength, and the single-chip microcomputer that is connected with described three road infrared induction circuit, described infrared induction circuit includes infrared sensor, impedance matching and amplifying circuit and filtering circuit, the output terminal of described infrared sensor is connected described single-chip microcomputer by described impedance matching with amplifying circuit in proper order with filtering circuit, described three road infrared induction circuit comprise 4.3 micron wave length infrared sensors respectively, 3.8 micron wave length infrared sensor and 5.0 micron wave length infrared sensors.In this embodiment, described single-chip microcomputer is 32 high-speed microprocessors, and described 32 high-speed microprocessors have three tunnel 16 analog to digital converters, and the input end of described three tunnel 16 analog to digital converters connects the output terminal of described three road infrared induction circuit respectively.
In a kind of more preferably embodiment, described impedance matching and amplifying circuit are second amplifying circuit, and in the described second amplifying circuit, the voltage output end of higher level's amplifying circuit connects the voltage input end of subordinate's amplifying circuit.
In a kind of preferred embodiment, described second amplifying circuit is a secondary junction field effect transistor amplifying circuit, and the voltage output end of higher level's junction field effect transistor amplifying circuit connects the voltage input end of subordinate's junction field effect transistor amplifying circuit.
In a kind of further preferred embodiment, also include the output follow circuit between the described secondary junction field effect transistor amplifying circuit, the voltage input end of described output follow circuit connects the voltage output end of described higher level's junction field effect transistor amplifying circuit, and the voltage output end of described output follow circuit connects the voltage input end of described subordinate junction field effect transistor amplifying circuit.
More preferably in the embodiment, described filtering circuit is multistage low-pass filter circuit at another kind, and described each rank low-pass filter circuit all has the low-pass filter that cutoff frequency is 30Hz.
In actual applications, three-wavelength infrared flame detector of the present utility model adopts the circuit modular design, to reduce the process Installation requirement of product, makes the detector anti-electromagnetic interference capability strong, the reliability height.
Three-wavelength infrared flame detector of the present utility model comprises the infrared sensor circuit module, infrared sensor impedance matching and amplifying circuit module and one-chip computer module.
Wherein, as shown in Figure 3, infrared sensor generally uses the lithium tantalate thin slice as sensitive unit, is the capacitive signals source, and its dc impedance is 10
13The Europe order of magnitude.Low noise J field effect transistor is generally used in the output of infrared sensor, and the sampling resistor order of magnitude of sensitive unit is 2 * 10
11About Europe, this sampling resistor also can be used as the biasing resistor of F field effect transistor simultaneously, and Cd is that the sensitive unit of lithium tantalate, G are that F field effect transistor, Ri are sensitive first sampling resistor.
Because of distributed capacitance parasitic in the junction capacity of J field effect transistor and the sensor, make the input end of J field effect transistor have a non-physical equivalent input capacitance Ci, form one with biasing resistor and reached second RC capacity time constant of level, therefore, the design of matching stage circuit should reduce the numerical value of Ci as far as possible, so must add the numerical value that a boostrap circuit unit reduces Ci as far as possible in the circuit, wherein boostrap circuit is to utilize feedback to make the two ends of input resistance be approximately equipotential, reduce to ask for electric current, thereby improve input impedance to input circuit, reduce the circuit of input capacitance Ci.
As shown in Figure 4, use the SST201 technotron in this infrared sensor circuit module, the output of infrared sensor is fed back to the input end of effect duct ligation type field effect transistor, when infrared ray sensor receives flare up fire, signal feedback is to the input end of technotron, and the field effect transistor technotron is forced to draw high the anode voltage of infrared ray sensor, thereby has reduced the input circuit of next stage is asked for electric current, improve input impedance, reduced input capacitance.
In the three-wavelength infrared sensor in the utility model, only use 4.3 microns infrared sensors as the main detector wavelength, give up the auxiliary detector wavelength, the specific aim of detector is just very strong like this, the main basis for estimation of utilizing the primary radiation peak wavelength of Fire Radiation frequency spectrum whether to exist as flame.Simultaneously, utilize 3.8 microns infrared sensors as one of them reference wavelength, this wavelength infrared sensor fundamental purpose, the one, this wavelength is that the infrared radiation wavelength in the flame combustion process is a valley, relative peak has very big drop for 4.3 microns; The 2nd, utilize this wavelength to carry out the filtering high temp objects and disturb, guarantee that detector energy correct detection is to the high temp objects thermal radiation signal, by software mode, can be used as main detector passage 4.3 for the background signal of sensor carries out filtering, get rid of the high temp objects heat radiation and disturb.Utilize 5.0 microns infrared sensors as the another one reference wavelength, this wavelength infrared sensor fundamental purpose, the one, this wavelength is that the infrared radiation wavelength in the flame combustion process is a valley, relative peak has very big drop for 4.3 microns; The 2nd, utilize this wavelength to carry out the filtering cryogenic object and disturb, guarantee that detector energy correct detection is to the cryogenic object thermal radiation signal, by software mode, can be used as main detector passage 4.3 for the background signal of sensor carries out filtering row, remove the cryogenic object heat radiation and disturb.By these two reference wavelengths, in conjunction with the main detector wavelength, the occasion that detector can be adapted to exist the different temperatures infrared radiation to disturb has improved adaptability, stability and the reliability of product.
The wavelength of these three passage infrared sensors of the present utility model all relatively closes on, make when detector is received same temperature infrared radiation, the signal response amplitude basically identical of triple channel infrared sensor, circuit design can three tunnel parameter unanimities, reduce the design risk, brought a lot of facilities for simultaneously production and debugging.
The output impedance of infrared sensor has reached 10 than higher
5The order of magnitude, the input impedance of pair amplifier requires very high, if the input impedance of amplifier is not high enough, that is to say that the input impedance of amplifier and the output impedance of sensor do not match, can cause the sensor output signal amplitude fading, the detection overall performance of the sensor of influence.
Therefore, in infrared sensor impedance matching and amplifying circuit module, sensor impedance matching circuit employing ultra-low noise J field effect transistor is mated and is amplified, and the J field effect transistor has the input impedance height (can reach 10
8And the low-down characteristics of noise the order of magnitude).As shown in Figure 5, the J field effect transistor amplification circuit has been used in design of the present utility model, and has adopted the two-stage amplification, the degenerative mode of inter-stage, the enlargement factor of stabilizing amplifier (about 220 times) strengthens the frequency response characteristic of amplifying circuit, thereby has improved the stability and the reliability of circuit.Because the output impedance of field effect transistor amplification circuit than higher, amplifying the terminal follower output design of adopting, has reduced the output impedance of amplifier, has reduced requirement for the next stage Design of Amplifier.The structure of output follow circuit as shown in Figure 6.Before single-chip microcomputer was sampled to sensor signal, the utility model also designed and has used multiple order low pass filter as shown in Figure 7, and the cutoff frequency F0 of described low-pass filter is 30Hz, and the effect of signals of the non-pyric factor of filtering improves reliability of products.
One-chip computer module of the present utility model has used 32 bit data to handle special-purpose single-chip microcomputer MSP430FE4793.Its running frequency height, arithmetic capability and processing power are strong; And can embed the operation multiple task operating system, realize synchronized sampling and Synchronization Analysis, strengthen the stability and the reliability of product the three-way sensor signal.As shown in Figure 8, this single-chip microcomputer carries three paths of independent 16 A/D analog to digital converters at a high speed, resolution can reach 65536, the input voltage range of this three tunnel independence A/D converter is ± 0.6V simultaneously, the relative amplifying circuit of full scale output 5V, enlargement factor is little about 8 times, only need to amplify about 250 times just enough, reduce Design of Amplifier difficulty and cost to a great extent, simultaneously the signal to noise ratio (S/N ratio) that reduces amplifying circuit has been brought very big benefit.
Adopted the three-wavelength infrared flame detector of this utility model, because its three road infrared inductions circuit comprises 4.3 micron wave length infrared sensors, 3.8 micron wave length infrared sensors and 5.0 micron wave length infrared sensors respectively.It utilizes 5.0 micron wave length infrared sensors as the reference wavelength, this wavelength is the valley of the infrared radiation wavelength in the flame combustion process, it has very big drop for 4.3 microns with respect to peak wavelength, thereby can reduce the generation of wrong report, improves the degree of accuracy of flame detector; Simultaneously, it can carry out filtering to the background signal as 4.3 micron wave length infrared sensors of main detector passage, get rid of the cryogenic object heat radiation and disturb, thereby guarantee that detector energy correct detection to the cryogenic object thermal radiation signal, promotes the global reliability of this three-wavelength infrared flame detector.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (8)
1. three-wavelength infrared flame detector, it is characterized in that, described three-wavelength infrared flame detector comprises surveys three road different infrared induction circuit of wavelength, and the single-chip microcomputer that is connected with described three road infrared induction circuit, described infrared induction circuit includes infrared sensor, impedance matching and amplifying circuit and filtering circuit, the output terminal of described infrared sensor is connected described single-chip microcomputer by described impedance matching with amplifying circuit in proper order with filtering circuit, described three road infrared induction circuit comprise 4.3 micron wave length infrared sensors respectively, 3.8 micron wave length infrared sensor and 5.0 micron wave length infrared sensors.
2. three-wavelength infrared flame detector according to claim 1, it is characterized in that, described impedance matching and amplifying circuit are second amplifying circuit, and in the described second amplifying circuit, the voltage output end of higher level's amplifying circuit connects the voltage input end of subordinate's amplifying circuit.
3. three-wavelength infrared flame detector according to claim 2, it is characterized in that, described second amplifying circuit is a secondary junction field effect transistor amplifying circuit, and the voltage output end of higher level's junction field effect transistor amplifying circuit connects the voltage input end of subordinate's junction field effect transistor amplifying circuit.
4. three-wavelength infrared flame detector according to claim 3, it is characterized in that, also include the output follow circuit between the described secondary junction field effect transistor amplifying circuit, the voltage input end of described output follow circuit connects the voltage output end of described higher level's junction field effect transistor amplifying circuit, and the voltage output end of described output follow circuit connects the voltage input end of described subordinate junction field effect transistor amplifying circuit.
5. three-wavelength infrared flame detector according to claim 1 is characterized in that, described filtering circuit is multistage low-pass filter circuit.
6. three-wavelength infrared flame detector according to claim 5 is characterized in that, described each rank low-pass filter circuit all has the low-pass filter that cutoff frequency is 30Hz.
7. three-wavelength infrared flame detector according to claim 1 is characterized in that, described single-chip microcomputer is 32 high-speed microprocessors, and described 32 high-speed microprocessors have three tunnel 16 analog to digital converters.
8. three-wavelength infrared flame detector according to claim 7 is characterized in that, the input end of described three tunnel 16 analog to digital converters connects the output terminal of described three road infrared induction circuit respectively.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048050A (en) * | 2012-07-30 | 2013-04-17 | 中国科学院自动化研究所 | Radiation temperature measurement method and instrument for measuring real temperature of target |
| CN105354974A (en) * | 2015-11-30 | 2016-02-24 | 无锡拓能自动化科技有限公司 | Flame detection method based on three-wavelength infrared flame detector |
| CN105513261A (en) * | 2015-11-30 | 2016-04-20 | 无锡拓能自动化科技有限公司 | Three-wavelength infrared flame detector |
| CN106768330A (en) * | 2016-12-16 | 2017-05-31 | 君都智能科技(上海)有限公司 | A kind of flame detecting device based on spectrum |
| CN108010254A (en) * | 2017-11-28 | 2018-05-08 | 无锡职业技术学院 | One kind is based on four wave band infrared flame detectors and its flame identification algorithm |
| CN108765863A (en) * | 2018-09-06 | 2018-11-06 | 无锡圣敏传感科技股份有限公司 | A kind of flame detector and flame detecting alarm system |
| CN108806165A (en) * | 2018-08-15 | 2018-11-13 | 重庆英卡电子有限公司 | Photo taking type flame detection system and its control method |
| CN108961647A (en) * | 2018-08-15 | 2018-12-07 | 重庆英卡电子有限公司 | Photo taking type flame detector and its control method |
| CN108986379A (en) * | 2018-08-15 | 2018-12-11 | 重庆英卡电子有限公司 | Flame detector and its control method with infrared photography |
| CN109060148A (en) * | 2018-08-15 | 2018-12-21 | 重庆英卡电子有限公司 | Flame detector and its control method |
| CN111123423A (en) * | 2020-03-27 | 2020-05-08 | 上海翼捷工业安全设备股份有限公司 | Double-channel infrared filter combination for flame detection and preparation method and application thereof |
| CN111862522A (en) * | 2020-05-29 | 2020-10-30 | 安徽皖讯智能科技有限公司 | 3-infrared-based composite fire detection algorithm |
| CN113313903A (en) * | 2021-04-06 | 2021-08-27 | 中国船舶重工集团公司第七0三研究所 | Multi-parameter data fusion fire judgment method |
| TWI765190B (en) * | 2019-11-12 | 2022-05-21 | 宏力實業股份有限公司 | flame detection method |
| CN115346344A (en) * | 2022-07-06 | 2022-11-15 | 岭东核电有限公司 | Monitoring method, equipment and storage medium for radioactive pollution |
| CN115762042A (en) * | 2022-12-23 | 2023-03-07 | 青鸟消防股份有限公司 | Flame detection method and flame detector for infrared sensor |
| CN120823680A (en) * | 2025-07-11 | 2025-10-21 | 河南中安电子探测技术有限公司 | A flame recognition method and flame detector based on multi-band infrared signal fusion |
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- 2010-11-15 CN CN2010206077714U patent/CN201867924U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048050A (en) * | 2012-07-30 | 2013-04-17 | 中国科学院自动化研究所 | Radiation temperature measurement method and instrument for measuring real temperature of target |
| CN105354974A (en) * | 2015-11-30 | 2016-02-24 | 无锡拓能自动化科技有限公司 | Flame detection method based on three-wavelength infrared flame detector |
| CN105513261A (en) * | 2015-11-30 | 2016-04-20 | 无锡拓能自动化科技有限公司 | Three-wavelength infrared flame detector |
| CN106768330A (en) * | 2016-12-16 | 2017-05-31 | 君都智能科技(上海)有限公司 | A kind of flame detecting device based on spectrum |
| CN108010254A (en) * | 2017-11-28 | 2018-05-08 | 无锡职业技术学院 | One kind is based on four wave band infrared flame detectors and its flame identification algorithm |
| CN108986379A (en) * | 2018-08-15 | 2018-12-11 | 重庆英卡电子有限公司 | Flame detector and its control method with infrared photography |
| CN108806165A (en) * | 2018-08-15 | 2018-11-13 | 重庆英卡电子有限公司 | Photo taking type flame detection system and its control method |
| CN108961647A (en) * | 2018-08-15 | 2018-12-07 | 重庆英卡电子有限公司 | Photo taking type flame detector and its control method |
| CN109060148A (en) * | 2018-08-15 | 2018-12-21 | 重庆英卡电子有限公司 | Flame detector and its control method |
| CN108765863A (en) * | 2018-09-06 | 2018-11-06 | 无锡圣敏传感科技股份有限公司 | A kind of flame detector and flame detecting alarm system |
| TWI765190B (en) * | 2019-11-12 | 2022-05-21 | 宏力實業股份有限公司 | flame detection method |
| CN111123423A (en) * | 2020-03-27 | 2020-05-08 | 上海翼捷工业安全设备股份有限公司 | Double-channel infrared filter combination for flame detection and preparation method and application thereof |
| CN111123423B (en) * | 2020-03-27 | 2020-06-23 | 上海翼捷工业安全设备股份有限公司 | Double-channel infrared filter combination for flame detection and preparation method and application thereof |
| CN111862522A (en) * | 2020-05-29 | 2020-10-30 | 安徽皖讯智能科技有限公司 | 3-infrared-based composite fire detection algorithm |
| CN113313903A (en) * | 2021-04-06 | 2021-08-27 | 中国船舶重工集团公司第七0三研究所 | Multi-parameter data fusion fire judgment method |
| CN115346344A (en) * | 2022-07-06 | 2022-11-15 | 岭东核电有限公司 | Monitoring method, equipment and storage medium for radioactive pollution |
| CN115762042A (en) * | 2022-12-23 | 2023-03-07 | 青鸟消防股份有限公司 | Flame detection method and flame detector for infrared sensor |
| CN120823680A (en) * | 2025-07-11 | 2025-10-21 | 河南中安电子探测技术有限公司 | A flame recognition method and flame detector based on multi-band infrared signal fusion |
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