• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    OPTICALLY REDUNDANT FIRE DETECTOR FOR FALSE ALARM REJECTION. A system for confirming the detection of a fire using a plurality of flame radiation sensors, or each equipped with a radiation detector and an optical filter having a spectral transmission characteristic in which at least one optical filter is redundant with at least one other optics filter. The result is a system that has operationally redundant sensors. In use, in case a fire is detected by one of the redundant sensors without including the redundant radiation sensor in the fire detection calculation, then a fire detection algorithm can switch to the other operationally redundant sensor to verify that the confirmation of a fire. Due to the spatial separation and, if the object is small and narrow, a different result that will be obtained with the redundant detector being used in the calculation compared to the primary detector that is associated with the redundant detector.
    公开号:BR112012033698B1
    申请号:R112012033698-3
    申请日:2011-06-23
    公开日:2021-04-20
    发明作者:Johnathan Samuel Harchanko
    申请人:Tyco Fire Products Lp；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    The present invention is generally directed to a system and method for confirming the detection of a fire in a monitored region. More particularly, the present invention is directed to a fire detection system including an operationally redundant and logical flame sensor to discriminate between a fire event and a false fire event in a monitored region. Background technique
    Optical fire detection systems including multiple flame sensors are known in the art. Exemplary systems are described in US patents nos. 6,518,574, 5,373,159, 5,311,167, 5,995,008 and 5,497,003. flame sensors in such systems are typically equipped with a radiation detector and a unique optical filter ranging from ultraviolet to infrared to allow measurement of the spectral content of objects in the field of view (FOV) of the flame sensor. By judiciously choosing the type of radiation detector, eg a Geiger-Mueller, a silicon, a pyroelectric, etc., in combination with the appropriately specified optical filter for each radiation detector and electronically combining the output signals from the radiation sensors. flames, a flame can be discriminated from other innocuous sources. Thus, based on the emissive characteristics of a flame and the predicted false fire alarm sources, for example, a radiant heater, cigarette, cigar, etc., in a monitored region a fire detection system can be developed by selecting the proper combination of radiation detectors and optical filters so that the predicted false alarm sources do not cause a false alarm. In fire detection systems of this type, a fire alarm condition is identified and reported by the system when the sensed radiation source appears to be spectrally similar to a flame as defined by the system designer and determined by the designer's choice of radiation detectors , optical filters and electronic combination of the signals resulting from the radiation detectors.
    A disadvantage of optical fire detection systems of this type is manifested when a spatially small radiation source is placed in close proximity to the flame sensors. This is because there is an inherent spatial disparity between multiple flame sensors. This spatial disparity often results from the use of discrete radiation detectors and can be directly measurable as a physical distance. Alternatively, this spatial disparity can result from the use of refractive, diffractive, or reflective optical elements.
    In particular, the radiation detector of each flame sensor has its own field of view that may not significantly overlap that of the adjacent radiation detector until an object is several inches away from the radiation detector. If the spatially small radiation source is placed closer to the common field range of radiation detectors, that is, the range over which the radiation detectors' FOV overlap, a significant chance exists that a detector will observe more of the radiation detector's source. than any other radiation detector. As a result, the radiation detector that has observed more of the radiation will have a chance to collect more radiation from the radiation source depending on the spectral characteristics of the radiation source and the optical filter associated with that specific radiation detector. Consequently, the electronic output of the flame sensor including that specific radiation detector could be skewed relative to other flame sensors. Once received and analyzed, the information transmitted in the electronic output of that flame sensor could cause the fire detection system to trigger a false alarm. Disclosure of the invention
    The present invention is directed to a system for confirming the detection of a fire using a fire detection system having a plurality of flame sensors each equipped with a radiation detector and an optical filter having a spectral transmission characteristic in which at least one optical filter is redundant for at least one other optical filter. The present invention is further directed to a method for testing the condition in which a spatially small radiation source is in close proximity to a flame detector so that the detector's multiple radiation sensors each visualize different spatial extents of the object in a way. that a false alarm is avoided. As such, the present invention is particularly suited to detecting fires where low false alarm rates are required and the distance and size of the fire varies over a wide range.
    According to one aspect of the invention there is disclosed a system for discriminating between a fire event and a false fire event. The system includes a first radiation detection structure configured to transmit a first signal and an operationally redundant second radiation detection structure to the first radiation detection structure and configured to transmit a second signal. A computer-based processor is provided to receive and analyze the first signal and at least one other signal to produce a first output, and compare the first output to a predetermined fire condition to determine whether the first output indicates a fire. The computer-based process is further configured to receive and analyze the second signal and at least one other signal to produce a second output, and compare the first output with the second output. In the event that the first exit and second exit meet a predetermined criterion for fire similarity or presence, a fire alarm command signal is transmitted to a fire extinguishing system to extinguish the fire. However, if the first and second outputs are not sufficiently similar or do not meet the predetermined fire presence criteria, the system will not transmit the fire alarm command signal even if the first output indicates the presence of a fire event.
    According to another aspect of the invention, a method for discriminating between a fire event and a false fire event in a monitored region is disclosed. The method includes positioning a plurality of flame sensors in the monitored region, wherein the plurality of flame sensors includes at least a first radiation sensor and a second radiation sensor that is operationally redundant to the first radiation sensor. Upon detection by the plurality of radiation sensors of a potential fire event, the plurality of flame sensors transmit signals to a computer-based processor. The processor calculates a first output and a second output based on the signals. The first output is calculated using a first signal transmitted by the first sensor absent a second signal transmitted by the second sensor. The second output is calculated using the second signal absent from the first signal. In the event that the first output indicates a fire event, the first output and second output are compared to each other for similarity. If the first and second outputs are not sufficiently similar, the first output is ignored and no fire alarm command is transmitted to a fire extinguishing system. On the other hand, if the first output indicates a fire event and the first and second outputs are sufficiently similar, the fire alarm command is sent to the fire extinguishing system, and the fire is extinguished.
    According to yet another aspect of the invention, there is disclosed a method of fabricating a system for discriminating between a fire event and a false fire event. The method includes operatively coupling a plurality of radiation sensors to a computer-based processor, and configuring a first radiation sensor of the plurality of radiation sensors to be operationally redundant to a second radiation sensor of the plurality of radiation sensors. The method further includes configuring the computer-based processor to receive and analyze signals generated by the plurality of radiation sensors upon thereby detecting a potential fire event, calculating a first output using a first signal transmitted by the first sensor absent a second signal transmitted by the second sensor, and calculate a second output using the second signal absent from the first signal. The processor is further configured to transmit a fire alarm command signal to a fire extinguishing system when the first output and the second output meet a predetermined criterion for similarity or a predetermined fire presence criterion. Brief description of the drawings
    Figure 1 is a partial sectional view of the fields of view of a prior art fire detection system having multiple flame sensors.
    Figure 2 illustrates a schematic block diagram of an optical detector apparatus for detecting the presence of fire in accordance with a preferred embodiment of the present invention.
    Figure 3 is a plan view of the optical detector apparatus of Figure 2.
    Figure 4 is a partial sectional view of the fields of view of the flame sensors of the optical detector apparatus of Figure 2.
    Figure 5 is a flowchart of data representing the process by which the optical detector apparatus of Figure 2 detects the presence of fire. Best way to carry out the invention
    A process and system for detecting sparks, flames or fire in accordance with a preferred embodiment of the present invention is described herein. It should be noted that the terms "fire sensor", "flame sensor" and "radiation sensor" are used interchangeably in this text and refer generically to any sensor for detecting sparks, flames or fires, including explosive or fire type fires. fireballs and other dangerous heat-energy phenomena.
    A problem addressed by the present invention is that fire detection systems often produce inconsistent results for fires occurring at different points in the fields of view of the radiation detectors of the system's flame sensors. This problem stems from interference filters employed as radiation detectors to transmit radiation in the desired spectral ranges. The pass ranges of interference filters vary with the angle at which radiation from a fire is incident on the filter. As a result, the amount of radiation sensed is dependent on the angle of incidence, and, as a result, a specific flame sensor may not be as effective in detecting a fire when the fire is positioned off-axis from the radiation detector of the flame sensor. Thus, optical flame detection systems using multiple radiation sensors including ultraviolet, visible and infrared radiation detectors, each equipped with unique optical filters to measure the spectral signature of objects in the field of view, work well at distances where the fields of vision. individual views overlap. However, at close range, the fields of view do not overlap and one radiation detector can see more of the object than another.
    To illustrate this phenomenon, in Figure 1 a partial sectional view of the fields of view of a prior art flame detection system 10 is shown at short distance. The short distance is somewhere between 0 and 6 inches depending on how close the sensors are to each other. the flame detection system 10 includes three unique radiation sensors 11, 13 and 15 that are configured to detect radiation in the ultraviolet, visible and infrared portions of the electromagnetic spectrum, respectively. At short distance, sensors 11, 13 and 15 have respective fields of view 17, 19 and 21. In this range, when an object 3, such as a cigarette, is located in fields of view 17, 19 and 21, object 23 can be more fully sensed by one sensor than another. Specifically, for example, in Figure 1, object 23 is located entirely in the field of view 17 of the sensor 11, but only partially located in the fields of view 19 and 21 of the sensors 13 and 15. This tilts the output of the sensor 11 relative to to sensors 13 and 15 since sensor 11 perceives object 23 as having a greater intensity than is perceived by sensors 13 and 15. Thus, although the same object would not signal a false alarm in longer ranges where all sensors radiation detectors can see the entire object in their radiation detectors' fields of view, in narrower ranges the output of some sensors would be slanted to the point where the object appears to be a fire.
    To solve this problem, the present invention is based on adding an operationally redundant flame sensor to the sensor group so that if a fire is detected without including the operationally redundant radiation sensor in the calculation, the algorithm can switch to the operationally redundant sensor. redundant to verify confirmation of a fire. Due to the spatial separation of the operationally redundant sensor and the simulated sensor, and if the object is small and close, a different result will be obtained with the operationally redundant sensor being used in the calculation compared to the primary sensor that is associated with or simulated by the sensor operationally redundant. Here, by "operationally redundant sensor", "operationally redundant flame sensor" and "operationally redundant radiation sensor" is meant a sensor that operates substantially similar to another sensor in the flame detection system, as an exact copy or through handling the sensor material, sensor temperature, sensor wavelength filter, sensor preamp, sampling engine (if so equipped), and/or the software algorithm (if so equipped), so that it could be used as an effective replacement for the other sensor, ie the simulated sensor. Thus, the operationally redundant sensor may be identical in function and structure to the simulated sensor, or it may have a different detector material and a different filter as long as it is substantially similar in performance to the simulated sensor. For example, many detector materials overlap when considering their spectral response so that a silicon photodetector - a visible spectrum sensor - equipped with a unique optical filter, and a thermopile detector - an infrared spectrum sensor - equipped with its own Unique optical filter could be configured through preamps, software gains and calibration to run substantially similar to each other.
    Referring to Figure 2, there is shown a schematic block diagram of a flame detection apparatus 100 in accordance with a currently preferred embodiment of the present invention. Apparatus 100 includes a plurality of optical flame sensors 101, 103, 105 and 107, all of which are coupled to an analog-to-digital converter, or ADC, 109 which is further coupled to a processor 111 for processing in accordance with a detection algorithm executed by a computer program stored in computer readable media accessible by the processor 111. The processor 111 is responsive to an input/output device 113, which may include a key pad, a display, aural indicators, such as a or more speakers, and visual indicators such as light emitting diodes or the like. A temperature sensor 115 can also be included to indicate ambient temperature values for calibration purposes. Sensors 101, 103, 105 and 107 can be configured with a dedicated amplifier to boost signal strength, as well as a transparent protective cover 117.
    Optical sensors 101, 103, 105 and 107 each include a respective radiation detector 119 which may be selected, for example, from a Geiger-Mueller radiation detector, a silicon radiation detector, a pyroelectric radiation detector, a thermopile detector , a lead sulfide detector, a lead selenide detector, an indium antimonide detector, etc. based on the emissive characteristics of a flame, the type of radiation detector 119, and the predicted false fire alarm sources, an appropriately specified optical filter 121 is combined with each radiation detector 119. of radiation detector, each radiation detector 119 of sensors 101, 103, 105 and 107 can be combined with an optical filter 121 selected from an ultraviolet range spectrum filter, a far range infrared spectrum filter, a spectrum filter a water band or a carbon dioxide band spectrum filter, preferably sensors 101, 103 and 105 are configured to detect radiation in the ultraviolet, visible and infrared portions of the electromagnetic spectrum, respectively. Sensor 107 is the operationally redundant sensor.
    Referring to Figure 3, the flame detection apparatus 100 includes a dedicated housing 123, such as a TO-5 electronics package, in which sensors 101, 103, 105 and 107 are housed. To create a large spatial disparity for the operationally redundant sensor 107 and the simulated sensor in the housing 123, the operationally redundant sensor is located farther away from the simulated radiation detector, which in the present embodiment is shown in Figure 3 as the sensor 101, than of sensors 103 and 105. By locating sensor 107 further away from sensor 101 than sensors 103 and 105, the FOV of sensor 107 in close fix overlaps the FOV of sensor 101 smaller than the FOVs of sensors 103 and 105.
    To illustrate the spatial disparity of the operationally redundant sensor 107 and simulated sensor 101 relative to sensors 103 and 105, a partial sectional view of the fields of view of sensors 101, 103, 105 and 107 of the detection apparatus is shown in Figure 4 flame 100. At short distance, sensors 101, 103, 105 and 107 have respective fields of view 125, 127, 129 and 131. Due to the placement of sensor 107 away from sensor 101 relative to sensors 103 and 105, FOV 131 overlaps less than FOV 125 than FOVs 127 and 129 of sensors 103 and 105. Thus, when an object 133, such as a cigarette, is located in the fields of view 125, 127, 129 and 131 in this range, the object 133 is less likely of being observed integrally by the two sensors 101 and 107 than being observed integrally by sensor 101 and sensor 103 or 105.
    Specifically, for example, in Figure 4, object 133 is located entirely in field of view 125 of simulated sensor 101 and field of view 129 of sensor 105, but only in fields of view 127 of sensor 103. In this case, sensors 101 and 105 will signal to information processor 111 that it is tilted relative to sensor 103 since sensor 103 only observes a portion of object 133 while sensors 101 and 105 observe object 133 in full. This misinformation can cause the processor 111 to trigger a false alarm. However, by allowing processor 111 to analyze a second set of signals transmitted by sensor 103, 105, and 107, processor 111 can determine whether object 23 is an effective fire event, or just a small radiation source that is not needed. extinguishing by comparing the first output of processor 111 with its second output or comparing the two outputs of processor with a predetermined flame presence criterion. Thus, as explained in more detail below, by providing operationally redundant sensor 106 and positioning it that way with respect to sensors 101, 103 and 105, the detection algorithm performed by processor 111 is allowed to receive data about object 133 of the sensors spatially separated 101 and 107 which, due to their separation, are better situated to provide the processor 111 with contradictory data about the object 133 than if the sensor 107 were located closer to the sensor 101 than the sensors 103 and 105.
    The detection algorithm performed by the computer program of the present invention is substantially the same as the detection algorithm in current fire detection systems with the exception that when a flame is detected, the algorithm of the flame detection apparatus 100 performs the two calculations. times, once including only the signals from sensors 101, 103 and 105 and once again including only the signals from sensors 103, 105 and 107. More particularly, with reference to Figure 5, the algorithm of the flame detection apparatus 100 receives and analyzes signals transmitted by sensors 101, 103 and 105 only. Based on these signals, the algorithm calculates a first output and compares the output with a predetermined flame presence criterion to determine if the first exit meets the predetermined flame presence criterion to indicate a flame event. When no flame event is indicated by the first output of the algorithm, no instructions are sent to the fire extinguishing system instructing the fire extinguishing system to fire. However, if the first output of the algorithm meets the predetermined flame presence criterion, the flame detection apparatus algorithm 100 is configured to receive and analyze the signals transmitted by sensors 103, 105 and 107 only, based on these signals, the algorithm calculates a second output and compares the output with the predetermined flame presence criterion to determine if the second output meets the predetermined flame presence criterion to indicate a fire event. When no fire event is indicated by the second output of the algorithm, no instruction is sent to the fire extinguishing system instructing the fire extinguishing system to fire. Only when the second output of the algorithm indicates a fire event does the algorithm cause instructions to be sent to the fire extinguishing system instructing the fire extinguishing system to fire.
    In an alternative embodiment, instead of comparing the first and second outputs with a predetermined fire presence criterion, the first output of the algorithm is compared with the second output of the algorithm. In this case, the second output of the algorithm must be comprised in a predetermined percentage, for example, 5%, of the first output for an alarm to be reported to the fire extinguishing system. Otherwise, no instructions are sent to the extinguishing system. This allows for the fact that some algorithms have a range in which the algorithm output is set to fire. Examples
    A fire detection system having an operationally redundant flame sensor is described where the redundant flame sensor is structurally different from, but substantially similar in performance to, the flame sensor it simulates. In particular, the fire detection system includes three optical flame sensors. One of these sensors is chosen to be simulated by a fourth optical flame sensor. In theory, any one of the three flame sensors could be chosen to be simulated. However, it is preferred that the flame sensor which generally has the highest signal to noise ratio is simulated. This flame sensor can be simulated using various approaches that are functionally different and then implementing some form of compensation to make the operationally redundant flame sensor operate in a substantially similar mode to the flame sensor chosen for simulation.
    Thus, a Geiger-Mueller sensor and a UV intensified silicon sensor, or a Selenide-lead sensor and a thermopile sensor could be made operationally redundant using filters and/or electronic circuits and/or software algorithms that correct any operational differences. Although the specific performance of the two flame sensors is somewhat different in terms of their detection capability (D*), signal-to-noise ratio, and equivalent noise power, the two would operate on the same wavelength and provide almost the same output in the presence of a flame when used with corrective filters, circuits and/or algorithms.
    Having given an example of two operationally redundant flame sensors that are functionally different, examples of how flame sensors could be used to reject a false alarm are provided. In the first method, one operationally redundant flame sensor is considered to be the primary flame sensor while the other is considered to be the secondary sensor. Assuming multiple sensors, flame presence criteria are calculated without using the operationally redundant secondary flame sensor. If the criteria is met, the criteria is calculated a second time without using the operationally redundant primary flame sensor, replacing the secondary flame sensor for the primary flame sensor. If the flame presence criteria are confirmed in both cases, a fire alarm is announced.
    In the second method, calculations for flame presence criteria are performed using the primary operationally redundant flame sensor. Rather than going through the same calculations a second time, the operationally redundant primary and secondary flame sensors are simply compared to each other. a second flame presence criterion is computed, which can be a simple ratio between the operationally redundant primary and secondary flame sensors, and if the second flame presence criterion is met subsequent to the first flame presence criterion then a fire is announced. In both methods, any filters, circuit 5 and/or corrective algorithms are assumed to be in place so the exact correction method is not important.
    As will be apparent to a person skilled in the art, various modifications can be made within the scope of the aforementioned description. Such modifications being within the ability of a person skilled in the art form part of the present invention and are covered by the claims below.
    权利要求:
    Claims (21)
    [0001]
    1. System for discriminating between a fire event and a false fire event, characterized in that it comprises a first radiation detection structure having a first field of view and configured to transmit a first signal that is generated in response to the detection of a potential fire event by the first radiation detection structure, a second radiation detection structure having a second field of view and being operationally redundant to the first radiation detection structure and configured to transmit a second signal that is generated in response to detection of a potential fire event by the second radiation detection structure, and an electronic assembly configured to (i) receive the first signal and at least one other signal generated in response to detection of a potential fire event and calculate a first output based on it, (ii) determine if the first output meets a first pressure criterion. predetermined flame factor to indicate a fire event, (iii) receive the second signal and calculate a second output based on the second signal and at least one other signal, (iv) determine whether the second output meets a second flame presence criterion predetermined to indicate a fire event, and (v) transmit a fire alarm command signal to a fire extinguishing system when both the first output meets the first predetermined flame presence criterion and the second output meets the second criterion of predetermined flame presence, wherein the first field of view and the second field of view overlap and the first radiation sensing structure and the second radiation sensing structure are supported within a dedicated housing.
    [0002]
    2. Flame detection system, according to claim 1, characterized in that the electronic assembly is additionally configured to refrain from transmitting the fire alarm command signal to the fire extinguishing system when the first output meets the first default flame presence criterion, but the second output does not meet the second flame presence criterion.
    [0003]
    3. Flame detection system according to claim 1, characterized in that it further comprises a third radiation detection structure configured to transmit a third signal generated in response to the detection of the potential fire event by the third detection structure of radiation, wherein at least one other signal includes the third signal and the third radiation detection structure is operably different from the first radiation detection structure.
    [0004]
    4. Flame detection system according to claim 3, characterized in that it further comprises a fourth radiation detection structure configured to transmit a fourth signal generated in response to the detection of the potential fire event by the fourth detection structure of radiation, wherein at least one other signal includes the fourth signal and the fourth radiation detecting structure is operably different from the first radiation detecting structure and third radiation detecting structure.
    [0005]
    5. Flame detection system according to claim 4, characterized in that each of the first, second, third and fourth radiation detection structures is selected from the group consisting of an ultraviolet band spectrum sensor, a visible range spectrum sensor, a near range infrared spectrum sensor, a mid range infrared spectrum sensor, a far range infrared spectrum sensor, a water range spectrum sensor and a water range spectrum sensor carbon dioxide.
    [0006]
    6. Flame detection system according to claim 3, characterized in that the first, second and third radiation detection structures are housed in the dedicated housing and the first radiation detection structure is positioned closer to the third structure of radiation detection than to the second radiation detection structure.
    [0007]
    7. Flame detection system according to claim 4, characterized in that the first, second, third and fourth radiation detection structures are housed in the dedicated housing and the first radiation detection structure is positioned closer to the third and fourth radiation detection structures than to the second radiation detection structure.
    [0008]
    8. Flame detection system, according to claim 1, characterized in that the first and second predetermined flame presence criteria are essentially the same.
    [0009]
    9. Flame detection system, according to claim 3, characterized by the fact that the third radiation detection structure has a third field of view that overlaps the first field of view and the second field of view.
    [0010]
    10. A flame detection system according to claim 4, characterized in that the fourth radiation detection structure includes a fourth field of view that overlaps the first field of view, the second field of view and the third field of view. eyesight.
    [0011]
    11. Method for discriminating between a fire event and a false fire event in a monitored region, characterized by the fact that it comprises: positioning a plurality of flame sensors in the monitored region, where the plurality of flame sensors is supported in one dedicated housing and includes a first flame sensor, a second flame sensor that is operationally redundant with respect to the first flame sensor, and a third flame sensor that is operationally different from the first flame sensor, the first flame sensor having a first flame sensor. field of view that overlaps a second field of view of the second flame sensor and a third field of view of the third flame sensor that overlaps the first field of view and the second field of view, transmit signals from the plurality of flame sensors. flame to an electronic assembly after detection by the plurality of flame sensors of a potential fire event, and calculating a first output eu a second output based on the signals, wherein the first output is calculated using a first signal transmitted by the first flame sensor and a third signal transmitted by the third flame sensor absent a second signal transmitted by the second flame sensor, and the second output is calculated using the second signal and the third signal missing from the first signal, and refraining from transmitting the fire alarm command signal to a fire extinguishing system when the first output meets and the second output fails to meet the set of fire criteria presence of predetermined flame.
    [0012]
    12. Method according to claim 11, characterized in that the first output and the second output are calculated using essentially the same algorithm.
    [0013]
    13. Method according to claim 11, characterized in that it further comprises transmitting a fire alarm command signal to a fire extinguishing system when both the first output and the second output meet the set of criteria of predetermined flame presence.
    [0014]
    14. Method according to claim 11, characterized in that the monitored region is the passenger compartment of a motor vehicle.
    [0015]
    15. Method according to claim 11, characterized in that the plurality of flame sensors is selected from the group consisting of an ultraviolet range spectrum sensor, a visible range spectrum sensor, an infrared spectrum sensor range sensor, a mid range infrared spectrum sensor, a far range infrared spectrum sensor, a water range spectrum sensor and a carbon dioxide range spectrum sensor.
    [0016]
    16. The method of claim 11, further comprising arranging the plurality of flame sensors so that the first flame sensor is spaced farther from the second flame sensor than is spaced from the third flame sensor. flames.
    [0017]
    17. Method according to claim 11, characterized in that the plurality of flame sensors includes a visible range spectrum sensor, an infrared range spectrum sensor, and an ultraviolet range spectrum sensor and the second Flame sensor is selected from the group consisting of a visible range spectrum sensor, an infrared range spectrum sensor and an ultraviolet range spectrum sensor.
    [0018]
    18. Method according to claim 11, characterized in that it further comprises transmitting a fire alarm to a fire extinguishing system when the second output is comprised in a predetermined range of the first output.
    [0019]
    19. Method of fabricating a system for discriminating between a fire event and a false fire event, characterized in that it comprises operatively coupling a plurality of flame sensors to an electronic assembly, configuring a first sensor of the plurality of fire sensors. flame to be operationally redundant to a second sensor of the plurality of flame sensors, configuring a third sensor of the plurality of flame sensors to be operationally different from the first sensor, and configuring the electronic assembly to (i) receive and analyze signals generated by the plurality of flame sensors upon detection thereby of a potential fire event, (ii) calculate a first output using a first signal transmitted by the first sensor and a third signal transmitted by the third sensor absent a second signal transmitted by the second sensor, (iii ) calculate a second output using the second signal and the third missing signal o first signal, (iii) transmit the fire alarm command signal to a fire extinguishing system when the first output and the second output indicate a flame event, and (iv) refrain from transmitting a fire alarm command signal. fire to a fire extinguishing system when the first output indicates a fire event and the second output does not, wherein the first sensor has a first field of view that overlaps a second field of view of the second sensor and the first sensor , the second sensor and the third sensor are supported within a dedicated housing.
    [0020]
    20. Method according to claim 19, characterized in that the plurality of flame sensors further includes a fourth sensor, being operationally different from the first sensor and the third sensor.
    [0021]
    21. Method according to claim 19, characterized in that it further comprises positioning the plurality of radiation detectors in a monitored region.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012033698B1|2021-04-20|optically redundant fire detector for false alarm rejection
    JP2013530474A5|2016-06-30|
    ES2243027T3|2005-11-16|FIRE DETECTOR.
    GB2444664A|2008-06-11|Fire detection
    BR112012000661B1|2020-01-14|flame detection apparatus
    WO2017136517A1|2017-08-10|Multi-band heat flux gauge
    CN102999993A|2013-03-27|Flame detector using optical sensing
    US10539458B2|2020-01-21|Optical flame detector
    CN109564717B|2021-06-15|Smoke detection method
    KR101497539B1|2015-03-02|Smoke detector with dual optical chambers
    CA2626753C|2016-12-06|A method for detecting a fire condition in a monitored region
    KR20200019532A|2020-02-24|INFRARED RAY FLARE SENSOR DETECTING NORMAL FIRE AND FIRE OF Li-ION BATTERY
    US9733129B1|2017-08-15|Multispectral band sensor
    WO2014020361A1|2014-02-06|Flame detector
    JP2003263688A|2003-09-19|Flame sensor
    KR20150027421A|2015-03-12|detecting apparatus for heat and gas concentration distribution and method for detecting thereof
    KR20170004039U|2017-11-29|Apparatus for thermal imaging overlay monitoring
    JP2010262422A|2010-11-18|Infrared abnormality detection device
    US11062586B2|2021-07-13|Method of monitoring health of protective cover of detection device
    US9410845B1|2016-08-09|Laser detecting screen
    JP2020160021A|2020-10-01|Flame detector
    JP2021089537A|2021-06-10|Fire detection system
    JP6482912B2|2019-03-13|Infrared detector, radiation thermometer and human body detector
    JPH10302178A|1998-11-13|Fire sensor and fire sensing method
    同族专利:
    公开号 | 公开日
    JP6061848B2|2017-01-18|
    AU2011280059A1|2013-01-24|
    JP2013530474A|2013-07-25|
    EP2589033A4|2015-12-23|
    AU2011280059B2|2013-08-22|
    EP2589033A2|2013-05-08|
    EP3608889A1|2020-02-12|
    IL223847A|2016-12-29|
    MX2013000131A|2013-06-03|
    WO2012012083A2|2012-01-26|
    CN103098106A|2013-05-08|
    CL2012003731A1|2013-10-11|
    CA2804051C|2016-08-02|
    US8547238B2|2013-10-01|
    BR112012033698A2|2016-12-06|
    KR20130143545A|2013-12-31|
    US20120001760A1|2012-01-05|
    CA2804051A1|2012-01-26|
    WO2012012083A3|2012-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3255352A|1962-09-06|1966-06-07|William H Johnston Lab Inc|Radioactive method of detection of hidden explosives|
    US3741309A|1971-01-04|1973-06-26|Graviner Colnbrook Ltd|Automatic fire extinguisher systems|
    JPS5745326B2|1976-06-17|1982-09-27|
    US4097851A|1976-07-19|1978-06-27|Pittway Corporation|Sensitivity compensated fire detector|
    US8581688B2|2002-06-11|2013-11-12|Intelligent Technologies International, Inc.|Coastal monitoring techniques|
    JPH0244385B2|1983-04-08|1990-10-03|Nohmi Bosai Kogyo Co Ltd|
    DE3318974C2|1983-05-25|1985-10-17|Preussag AG Bauwesen, 3005 Hemmingen|Flame detector|
    US4691196A|1984-03-23|1987-09-01|Santa Barbara Research Center|Dual spectrum frequency responding fire sensor|
    JPS61150096A|1984-12-25|1986-07-08|Nittan Co Ltd|Fire alarm|
    JPH0719315B2|1985-04-09|1995-03-06|ホーチキ株式会社|Fire alarm|
    JPH0378679B2|1985-07-18|1991-12-16|Hochiki Co|
    US4701624A|1985-10-31|1987-10-20|Santa Barbara Research Center|Fire sensor system utilizing optical fibers for remote sensing|
    JPH0560639B2|1986-05-19|1993-09-02|Hiromitsu Ishii|
    US4963856A|1987-04-03|1990-10-16|Mazda Motor Corporation|Theft deterrent system|
    US4764758A|1987-07-01|1988-08-16|Environment/One Corporation|Incipient fire detector II|
    US4965453A|1987-09-17|1990-10-23|Honeywell, Inc.|Multiple aperture ir sensor|
    US4866420A|1988-04-26|1989-09-12|Systron Donner Corp.|Method of detecting a fire of open uncontrolled flames|
    CN2045869U|1988-07-06|1989-10-11|施天禄|Automatic surveying, alarming and fire-extinguishing device for fire in room|
    US5237512A|1988-12-02|1993-08-17|Detector Electronics Corporation|Signal recognition and classification for identifying a fire|
    US5153563A|1989-08-23|1992-10-06|Nippon Mining Co., Ltd.|Fire sensing system, process for sensing fire and environment monitor|
    US7580782B2|1995-10-30|2009-08-25|Automotive Technologies International, Inc.|Vehicular electronic system with crash sensors and occupant protection systems|
    US5311167A|1991-08-14|1994-05-10|Armtec Industries Inc.|UV/IR fire detector with dual wavelength sensing IR channel|
    US7663502B2|1992-05-05|2010-02-16|Intelligent Technologies International, Inc.|Asset system control arrangement and method|
    US7880594B2|2000-09-08|2011-02-01|Automotive Technologies International, Inc.|Switch assemblies and method for controlling vehicular components|
    US20070205881A1|2000-09-08|2007-09-06|Automotive Technologies International, Inc.|Energy Harvesting Systems and Methods for Vehicles|
    US7421321B2|1995-06-07|2008-09-02|Automotive Technologies International, Inc.|System for obtaining vehicular information|
    US7603894B2|2000-09-08|2009-10-20|Automotive Technologies International, Inc.|Self-powered tire monitoring system|
    US7889096B2|2000-09-08|2011-02-15|Automotive Technologies International, Inc.|Vehicular component control using wireless switch assemblies|
    US6738697B2|1995-06-07|2004-05-18|Automotive Technologies International Inc.|Telematics system for vehicle diagnostics|
    US7760080B2|2000-09-08|2010-07-20|Automotive Technologies International, Inc.|Tire monitoring with passive and active modes|
    US7082359B2|1995-06-07|2006-07-25|Automotive Technologies International, Inc.|Vehicular information and monitoring system and methods|
    US8169311B1|1999-12-15|2012-05-01|Automotive Technologies International, Inc.|Wireless transmission system for vehicular component control and monitoring|
    US20070126561A1|2000-09-08|2007-06-07|Automotive Technologies International, Inc.|Integrated Keyless Entry System and Vehicle Component Monitoring|
    US7313467B2|2000-09-08|2007-12-25|Automotive Technologies International Inc.|System and method for in-vehicle communications|
    US7911324B2|2001-02-16|2011-03-22|Automotive Technologies International, Inc.|Method and system for obtaining information about RFID-equipped objects|
    US7786864B1|2000-09-08|2010-08-31|Automotive Technologies International, Inc.|Vehicular RFID and sensor assemblies|
    US5373159A|1992-09-08|1994-12-13|Spectronix Ltd.|Method for detecting a fire condition|
    US5592147A|1993-06-14|1997-01-07|Wong; Jacob Y.|False alarm resistant fire detector with improved performance|
    JPH076278A|1993-06-18|1995-01-10|Matsushita Electric Works Ltd|Automatic fire alarm system|
    US5696503A|1993-07-23|1997-12-09|Condition Monitoring Systems, Inc.|Wide area traffic surveillance using a multisensor tracking system|
    GB2281615B|1993-09-03|1997-05-21|Thorn Security|Detecting the presence of a fire|
    US5552763A|1993-11-10|1996-09-03|Simplex Time Recorder Company|Fire alarm system with sensitivity adjustment|
    DE69418977T2|1993-12-02|1999-12-30|Nohmi Bosai Ltd|Fire alarm system|
    US5486811A|1994-02-09|1996-01-23|The United States Of America As Represented By The Secretary Of The Navy|Fire detection and extinguishment system|
    US7408453B2|2001-02-16|2008-08-05|Automotive Technologies International, Inc.|Wheel-mounted tire pumping and energy generating system and method|
    US7920102B2|1999-12-15|2011-04-05|Automotive Technologies International, Inc.|Vehicular heads-up display system|
    US5497003A|1995-02-15|1996-03-05|Servo Corporation Of America|Pyroelectric detector array with optical filter elements|
    US5691703A|1995-06-07|1997-11-25|Hughes Associates, Inc.|Multi-signature fire detector|
    US5949235A|1995-06-22|1999-09-07|Fire Sentry Corporation|System and method for detection and control of ungrounded parts in a production coating line|
    US5625342A|1995-11-06|1997-04-29|The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration|Plural-wavelength flame detector that discriminates between direct and reflected radiation|
    AU1755597A|1996-01-29|1997-08-20|Engelhard Sensor Technologies, Inc.|Method for dynamically adjusting fire detection criteria|
    US5945924A|1996-01-29|1999-08-31|Marman; Douglas H.|Fire and smoke detection and control system|
    US5691704A|1996-01-29|1997-11-25|Engelhard Sensor Technologies, Inc.|Practical and improved fire detector|
    US5767776A|1996-01-29|1998-06-16|Engelhard Sensor Technologies, Inc.|Fire detector|
    US6064064A|1996-03-01|2000-05-16|Fire Sentry Corporation|Fire detector|
    US6518574B1|1996-03-01|2003-02-11|Fire Sentry Corporation|Fire detector with multiple sensors|
    US6507023B1|1996-07-31|2003-01-14|Fire Sentry Corporation|Fire detector with electronic frequency analysis|
    US6078050A|1996-03-01|2000-06-20|Fire Sentry Corporation|Fire detector with event recordation|
    US6057549A|1996-07-31|2000-05-02|Fire Sentry Corporation|Fire detector with multi-level response|
    US6153881A|1996-07-31|2000-11-28|Fire Sentry Corporation|Fire detector and housing|
    US6046452A|1996-03-01|2000-04-04|Fire Sentry Systems, Inc.|Process and system for flame detection|
    US6135760A|1996-06-19|2000-10-24|Meggitt Avionics, Inc.|Method and apparatus for characterizing a combustion flame|
    US6071114A|1996-06-19|2000-06-06|Meggitt Avionics, Inc.|Method and apparatus for characterizing a combustion flame|
    US5850182A|1997-01-07|1998-12-15|Detector Electronics Corporation|Dual wavelength fire detection method and apparatus|
    JPH10253398A|1997-03-11|1998-09-25|Nikon Corp|Rotary encoder|
    US5995008A|1997-05-07|1999-11-30|Detector Electronics Corporation|Fire detection method and apparatus using overlapping spectral bands|
    US5804825A|1997-05-07|1998-09-08|Detector Electronics Corporation|Fire detector having wide-range sensitivity|
    US6147598A|1997-07-03|2000-11-14|Trimble Navigation Limited|Vehicle theft system including a handheld computing device|
    US5838242A|1997-10-10|1998-11-17|Whittaker Corporation|Fire detection system using modulation ratiometrics|
    US5936531A|1998-03-06|1999-08-10|Powers; Frank A.|Electrical fire sensing and prevention/extinguishing system|
    US6150659A|1998-04-10|2000-11-21|General Monitors, Incorporated|Digital multi-frequency infrared flame detector|
    AU768582B2|1998-06-02|2003-12-18|Hochiki Kabushiki Kaisha|Flame detection device and flame detection method|
    JP3313663B2|1999-05-14|2002-08-12|国際技術開発株式会社|Flame detector|
    US6917288B2|1999-09-01|2005-07-12|Nettalon Security Systems, Inc.|Method and apparatus for remotely monitoring a site|
    US6166647A|2000-01-18|2000-12-26|Jaesent Inc.|Fire detector|
    US6448888B1|2000-05-16|2002-09-10|Sylvia Horner|Carbon monoxide sensor for vehicle compartment|
    US6727511B2|2000-11-22|2004-04-27|The Johns Hopkins University|Sensor array system for object position detection|
    DE10109362A1|2001-02-27|2002-09-19|Bosch Gmbh Robert|Fire detection procedures|
    JP2003121257A|2001-10-17|2003-04-23|Hatsuta Seisakusho Co Ltd|Flame detector|
    US6788198B2|2002-03-12|2004-09-07|Bob F. Harshaw|System for verifying detection of a fire event condition|
    US7245315B2|2002-05-20|2007-07-17|Simmonds Precision Products, Inc.|Distinguishing between fire and non-fire conditions using cameras|
    US7068177B2|2002-09-19|2006-06-27|Honeywell International, Inc.|Multi-sensor device and methods for fire detection|
    US7009497B2|2003-03-21|2006-03-07|Hds Acquisition Company|Method of distinguishing the presence of a single versus multiple persons|
    US6866102B2|2003-04-28|2005-03-15|Lenuel Boyce|Electrical fire extinguishing system|
    US7154400B2|2003-06-27|2006-12-26|The United States Of America As Represented By The Secretary Of The Navy|Fire detection method|
    JP3964845B2|2003-09-12|2007-08-22|東京瓦斯株式会社|Alarm|
    US7119697B2|2004-03-05|2006-10-10|Detector Electronics Corporation|Hydrogen fire detection system & method|
    US7684029B2|2004-10-29|2010-03-23|Avago Technologies General Ip Pte. Ltd.|Method and apparatus for identifying a sensed light environment|
    US7327247B2|2004-11-23|2008-02-05|Honeywell International, Inc.|Fire detection system and method using multiple sensors|
    US20060176169A1|2004-12-17|2006-08-10|The Regents Of The University Of California|System for sensing environmental conditions|
    US8138478B2|2005-03-21|2012-03-20|Visonic Ltd.|Passive infra-red detectors|
    JP2007008392A|2005-07-01|2007-01-18|Denso Corp|Occupant protecting system|
    US7542522B2|2005-09-20|2009-06-02|Intel Corporation|Device, system and method of wireless signal detection|
    KR101008897B1|2005-10-10|2011-01-17|고견채|a fire detector and system for detecting fire using the same|
    US20080030352A1|2006-02-27|2008-02-07|Thorn Security Limited|Methods and systems for gas detection|
    US7541938B1|2006-03-29|2009-06-02|Darell Eugene Engelhaupt|Optical flame detection system and method|
    US20080036593A1|2006-08-04|2008-02-14|The Government Of The Us, As Represented By The Secretary Of The Navy|Volume sensor: data fusion-based, multi-sensor system for advanced damage control|
    US7642924B2|2007-03-02|2010-01-05|Walter Kidde Portable Equipment, Inc.|Alarm with CO and smoke sensors|
    US7638770B2|2007-03-22|2009-12-29|Spectronix Ltd.|Method for detecting a fire condition in a monitored region|
    US7991187B2|2007-08-29|2011-08-02|Billy Hou|Intelligent image smoke/flame sensor and detection system|
    DE102008028134A1|2008-06-13|2009-12-17|Fogtec Brandschutz Gmbh & Co. Kg|Fire detection in rail vehicles|
    US7786877B2|2008-06-20|2010-08-31|Billy Hou|Multi-wavelength video image fire detecting system|
    GB2461917A|2008-07-18|2010-01-20|Gm Global Tech Operations Inc|Integrated sensor assembly for vehicle containing plurality of sensor types and theft deterrent LED|
    US7969296B1|2008-08-01|2011-06-28|Williams-Pyro, Inc.|Method and system for fire detection|
    US8284065B2|2008-10-03|2012-10-09|Universal Security Instruments, Inc.|Dynamic alarm sensitivity adjustment and auto-calibrating smoke detection|
    US8766807B2|2008-10-03|2014-07-01|Universal Security Instruments, Inc.|Dynamic alarm sensitivity adjustment and auto-calibrating smoke detection|
    US20110304728A1|2010-06-11|2011-12-15|Owrutsky Jeffrey C|Video-Enhanced Optical Detector|
    US8547238B2|2010-06-30|2013-10-01|Knowflame, Inc.|Optically redundant fire detector for false alarm rejection|
    US8077046B1|2010-10-08|2011-12-13|Airware, Inc.|False alarm resistant and fast responding fire detector|WO2011100225A1|2010-02-09|2011-08-18|Conocophillips Company|Automated flare control|
    US8547238B2|2010-06-30|2013-10-01|Knowflame, Inc.|Optically redundant fire detector for false alarm rejection|
    GB201213835D0|2012-08-03|2012-09-19|Patol Ltd|Detector|
    EP3084738B1|2013-12-17|2021-06-16|Tyco Fire Products LP|System and method for detecting fire location|
    US9449485B2|2014-09-03|2016-09-20|Honeywell International Inc.|Flame detector having visible light related processing circuits and infrared related circuits respectively coupled to photodiodes to establish instantaneous dc related signal changes and peak-to-peak ac signals over a predetermined time interval|
    US10450956B2|2014-10-21|2019-10-22|United Technologies Corporation|Additive manufactured ducted heat exchanger system with additively manufactured fairing|
    WO2016061686A1|2014-10-23|2016-04-28|Q-Links Home Automation Inc.|Method and system for home automation via thermostat|
    WO2016101065A1|2014-12-23|2016-06-30|Q-Links Home Automation Inc.|Method and system for determination of false alarm|
    EP3073458A1|2015-03-23|2016-09-28|Siemens Schweiz AG|Fire alarm with a light scattering assembly in the region of a smoke entry opening for contamination monitoring|
    JP6547427B2|2015-06-05|2019-07-24|富士通株式会社|Fire detection device, fire detection system, fire detection method, and fire detection program|
    US10126165B2|2015-07-28|2018-11-13|Carrier Corporation|Radiation sensors|
    US9865766B2|2015-07-28|2018-01-09|Carrier Corporation|Ultraviolet photodetectors and methods of making ultraviolet photodetectors|
    US9806125B2|2015-07-28|2017-10-31|Carrier Corporation|Compositionally graded photodetectors|
    US9928727B2|2015-07-28|2018-03-27|Carrier Corporation|Flame detectors|
    CN108369764B|2015-10-16|2020-04-07|霍尼韦尔国际公司|Method and system for adjusting a field of view of a flame detector|
    ITUB20155886A1|2015-11-25|2017-05-25|A M General Contractor S P A|Infrared radiation fire detector with compound function for confined space.|
    US10600057B2|2016-02-10|2020-03-24|Kenexis Consulting Corporation|Evaluating a placement of optical fire detector based on a plume model|
    KR102053988B1|2016-09-21|2019-12-09|주식회사 엘지화학|Energy storage system and method of fire managing for the energy storage system|
    KR101817730B1|2017-05-11|2018-01-11|주식회사 아이알티코리아|Fire detection device having a plurality of sensor groups for preventing false alarm|
    IT201700053602A1|2017-05-17|2018-11-17|Marco Pruneri|EQUIPMENT FOR MONITORING ATMOSPHERIC CHARACTERISTICS AND FIRE DETECTION|
    CN107941338A|2017-11-24|2018-04-20|上海曜成电子科技有限公司|A kind of flame detection device, system and method|
    CN108230637B|2017-12-29|2020-11-17|深圳市泛海三江科技发展有限公司|Fire-fighting fire alarm method and system|
    CN111521071A|2020-04-28|2020-08-11|北华航天工业学院|Signal fire extinguishing bomb for fire scene detection|
    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-22| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-11-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-04-06| B25A| Requested transfer of rights approved|Owner name: TYCO FIRE PRODUCTS LP (US) |
    2021-04-20| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/06/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/827,757|2010-06-30|
    US12/827,757|US8547238B2|2010-06-30|2010-06-30|Optically redundant fire detector for false alarm rejection|
    PCT/US2011/041627|WO2012012083A2|2010-06-30|2011-06-23|Optically redundant fire detector for false alarm rejection|
    [返回顶部]