Signal processing system for combustion diagnostics
December 27, 2015. Estimated 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.Patent ReferencesFlame monitoring apparatus Flame monitoring system Dual detector flame sensor Method and apparatus for monitoring flame condition Flame detector for use with a burner Method of detecting a fire of open uncontrolled flames Flame detector using a discrete fourier transform to process amplitude samples from a flame signal Digital controller component failure detection for gas appliance ignition function Burner flame sensing system and method Flame monitoring apparatus and method having a second signal processing means for detecting a frequency higher in range than the previously detected frequencies InventorAssigneeApplicationNo. 580422 filed on 12/27/1995US Classes:700/274, Control of combustion or heating apparatus (e.g., kiln, furnace, autoclave, burner, combusion system)340/578, By radiant energy431/12, Controlling or proportioning feed431/79, Photoelectric sensor702/77, Using Fourier method702/183Diagnostic analysisExaminersPrimary: Voeltz, Emanuel T.Assistant: Bui, Bryan Attorney, Agent or FirmForeign Patent References
International ClassesG08B 017/12F23N 005/08 AbstractA signal processing method and apparatus for analyzing operation of a combustion burner. Responsive to a signal produced by a flame sensor which monitors a burner flame, a fluctuational component of the signal is converted into an extremum function having a floating extremum point with a frequency coordinate which varies in the frequency domain with changes in combustion conditions. A current extremum value of the extremum function is calculated. Then, in relation to the current extremum value, a value of at least one parameter of the extremum function is calculated, such function being related to the combustion characteristic. The apparatus comprises a processor and memory coupled thereto, the memory having stored therein a plurality of instructions which, when executed by the processor, cause the processor to perform the aforementioned operations.Field of SearchCONDITION RESPONSIVE INDICATING SYSTEMFlame Specific condition By radiant energy Controlling or proportioning feed By combustion or combustion zone sensor Combustion product composition sensor Of shutdown by response to sensed combustion failure or overheat By electrical control circuit Photoelectric sensor Flame light source | |
