Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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US Patent 6261086 - Flame detector based on real-time high-order statistics
US Patent Issued on July 17, 2001
Estimated Patent Expiration Date:
May 5, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
May 5, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method, and a system for implementing the method, for detecting whether a flame is an on state or alternatively is in an off state. The method includes (i) detecting the flame and generating therefrom a flame signal capturing one or more attributes of the flame; (ii) using a high-order cumulant-to-moment formula to determine high-order cumulants for a random variable process representation of the flame signal; and (iii) determining whether the flame is on or off using the high-order cumulants. The method includes the step of applying the high-order cumulant-to-moment formula in a self-learning algorithm to determine flame-on high-order cumulants and flame-off high-order cumulants for the flame. Step (iii) includes comparing the high-order cumulants to the flame-on high-order cumulants and the flame-off high-order cumulants to determine whether the status of the flame is on or off.Other References
| InventorAssigneeApplicationNo. 565484 filed on 05/05/2000US Classes:431/79, Photoelectric sensor250/554, Flame light source340/578By radiant energyField of Search431/79, Photoelectric sensor431/14, Correlated with action of condition responsive burner control431/75, By combustion or combustion zone sensor431/78, By electrical control circuit431/77, Of shutdown by response to sensed combustion failure or overheat342/90, Automatic target detection342/22, TRANSMISSION THROUGH MEDIA OTHER THAN AIR OR FREE SPACE340/578, By radiant energy340/577, Flame340/579, By ionization or conductivity250/554Flame light sourceExaminersPrimary: Lateef, Marvin M.Assistant: Cocks, Josiah C. Attorney, Agent or FirmUS Patent References3940753, Detection of presence or absence of flamesIssued on: 02/24/1976 Inventor: Muller4280184, Burner flame detection Issued on: 07/21/1981 Inventor: Weiner , et al.4322723, Fault detection in a flame scanner Issued on: 03/30/1982 Inventor: Chase4370557, Dual detector flame sensor Issued on: 01/25/1983 Inventor: Axmark , et al.4553031, Optical fire or explosion detection system and method Issued on: 11/12/1985 Inventor: Cholin , et al.4665390, Fire sensor statistical discriminator Issued on: 05/12/1987 Inventor: Kern , et al.4750142, Flame detector Issued on: 06/07/1988 Inventor: Akiba , et al.4783592, Real time adaptive round discrimination fire sensor Issued on: 11/08/1988 Inventor: Snider , et al.4800285, Flame detecting arrangement for detecting a flame through horizontal and vertical scanning of a supervisory region by using a photodetector Issued on: 01/24/1989 Inventor: Akiba , et al.4904986, IR flame amplifier Issued on: 02/27/1990 Inventor: Pinckaers5073769, Flame detector using a discrete fourier transform to process amplitude samples from a flame signal Issued on: 12/17/1991 Inventor: Kompelien5077550, Burner flame sensing system and method Issued on: 12/31/1991 Inventor: Cormier5091890, Method of extracting target range and Doppler information from a Doppler-spread signal Issued on: 02/25/1992 Inventor: Dwyer5126721, Flame quality monitor system for fixed firing rate oil burners Issued on: 06/30/1992 Inventor: Butcher, et al.5337053, Method and apparatus for classifying targets Issued on: 08/09/1994 Inventor: Dwyer5495112, Flame detector self diagnostic system employing a modulated optical signal in composite with a flame detection signal Issued on: 02/27/1996 Inventor: Maloney, et al.5497004, Ultraviolet sensor Issued on: 03/05/1996 Inventor: Rudolph, et al.5547369, Camera, spectrum analysis system, and combustion evaluation apparatus employing them Issued on: 08/20/1996 Inventor: Sohma, et al.5993194Automatically optimized combustion control Issued on: 11/30/1999 Inventor: Lemelson, et al. Foreign Patent References
International ClassF23N 005/08 |
