STEPHEN JOHNSON
Accountancy in Andover, MA
License number
Massachusetts 27221
Issued Date
Jan 19, 2010
Expiration Date
Jun 30, 2017
Type
Certified Public Accountant
Address
Address
Andover, MA 01810
Professional information
Integrated Imaging Sensor/Neural Network Controller For Combustion Systems
US Patent:
5249954, Oct 5, 1993
Filed:
Jul 7, 1992
Appl. No.:
7/909911
Inventors:
Mark G. Allen - Boston MA
Charles T. Butler - Reston VA
Stephen A. Johnson - Andover MA
Edmund Y. Lo - Westford MA
Farla M. Russo - Brookline MA
Charles T. Butler - Reston VA
Stephen A. Johnson - Andover MA
Edmund Y. Lo - Westford MA
Farla M. Russo - Brookline MA
Assignee:
Electric Power Research Institute, Inc. - Palo Alto CA
International Classification:
F23H 526
US Classification:
431 14
Abstract:
Disclosed is an integrated imaging sensor/neural network controller for combustion control systems. The controller uses electronic imaging sensing of chemiluminescence from a combustion system, combined with neural network image processing, to sensitively identify and control a complex combustion system. The imaging system used is not adversely affected by the normal emissions variations caused by changes in burner load and flame position. By incorporating neural networks to learn emission patterns associated with combustor performance, control using image technology is fast enough to be used in a real time, closed loop control system. This advance in sensing and control strategy allows use of the spatial distribution of important parameters in the combustion system in identifying the overall operation condition of a given combustor and in formulating a control response accorded to a pre-determined control model.
Apparatus For Combustion, Pollution And Chemical Process Control
US Patent:
5275553, Jan 4, 1994
Filed:
May 11, 1992
Appl. No.:
7/881181
Inventors:
Michael B. Frish - Andover MA
Joseph Morency - Salem MA
Stephen A. Johnson - Andover MA
Arthur A. Boni - Andover MA
Joseph Morency - Salem MA
Stephen A. Johnson - Andover MA
Arthur A. Boni - Andover MA
Assignee:
PSI Environmental Instruments Corp. - Andover MA
International Classification:
F23N 500
US Classification:
431 76
Abstract:
Disclosed is a system for regulating the efficiency of a combustion process by detecting radiant energy emitted from ash particles entrained in the gas stream exiting the combustion chamber of a boiler or incinerator. The intensity of selected wavelengths of light emitted from the particles is indicative of the temperature of the particles. The change in the intensities of the selected wavelengths of light, and thus of the temperature of the gas stream at the furnace exit, is monitored, and a feedback control mechanism is used to regulate one or more combustion, pollution control, or heat transfer parameters thereby maximizing the thermal efficiency of the combustion process in the boiler or incinerator.
Apparatus For Combustion, Pollution And Chemical Process Control
US Patent:
5112215, May 12, 1992
Filed:
Jun 20, 1991
Appl. No.:
7/724540
Inventors:
Michael B. Frish - Andover MA
Joseph Morency - Salem MA
Stephen A. Johnson - Andover MA
Arthur A. Boni - Andover MA
Joseph Morency - Salem MA
Stephen A. Johnson - Andover MA
Arthur A. Boni - Andover MA
Assignee:
Physical Sciences, Inc. - Andover MA
International Classification:
F23J 700
US Classification:
431 3
Abstract:
Disclosed is a system for regulating the efficiency of a combustion process by detecting radiant energy emitted from ash particles entrained in the gas stream exiting the combustion chamber of a boiler or incinerator. The intensity of selected wavelengths of light emitted from the particles is indicative of the temperature of the particles. The change in the intensities of the selected wavelengths of light, and thus of the temperature of the gas stream at the furnace exit, is monitored, and a feedback control mechanism is used to regulate one or more combustion, pollution control, or heat transfer parameters thereby maximizing the thermal efficiency of the combustion process in the boiler or incinerator.