US4737844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the generation of real-time control parameters for smoke-generating combustion processes by means of a video camera
Assignee: Afora Oy
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Filing: 1987-01-27
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Granted: 1988-04-12
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Expires: 2007-01-27
Abstract
Abstract A method for generating real-time control parameters by a video camera for smoke-generating combustion reactions is disclosed. In accordance with the method, a video camera is used for obtaining a video signal, which is digitized and filtered temporally and spatially. The digitized video signal is divided on the basis of its signal level distribution into signal subareas to reduce the quantity of processed information. The picture elements belonging to the same subarea are combined into contiguous image areas representing a certain signal level, the subareas are combined into an integrated image, subsequent images are averaged to eliminate random disturbance, and the averaged image is displayed on a display device. This method facilitates the real-time monitoring of a combustion process.
Inventors
- 👤 Pekka Kohola
- 👤 Reijo Lilja
- 👤 Martin Ollus
- 👤 Petri Tanskanen
- 👤 Raimo Sutinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:41
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N2229/00; F23N2229/20; F23N2241/00; F23N2241/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A method for generating real-time control parameters by means of a video camera for smoke-generating combustion processes with the method based on generating a video signal by means of a video camera; digitizing the video signal; and filtering the digitized video signal temporarally and spatially; characterized by the following: dividing the digitized video signal on the basis of its signal level distribution into signal subareas in order to reduce the quantity of information to be handled; combining the picture elements belong to the same subarea into contiguous image areas, each of which corresponds to a certain signal level; combining the subareas into an integrated image; averaging the subsequent images so as to eliminate the effect of random disturbances; and displaying the average image on a display device.
Claim 2
Independent Claim
127 words
A method for generating real-time control parameters by means of a video camera for smoke-generating combustion processes with the method based on generating a video signal by means of a video camera; digitizing the video signal; and filtering the digitized video signal temporarally and spatially; characterized by the following: dividing the digitized video signal on the basis of its signal level distribution into signal subareas in order to reduce the quantity of information to be handled; combining the picture elements belong to the same subarea into contiguous image areas, each of which corresponds to a certain signal level; combining the subareas into an integrated image; averaging the subsequent images so as to eliminate the effect of random disturbances; and displaying the average image on a display device.
Claim 3
Dependent Claim
16 words
The method as claimed in claim 1 further including the step of controlling a stoker boiler.
Claim 4
Dependent Claim
17 words
The method as claimed in claim 1 further including the step of controlling a soda recovery boiler.
Claim 5
Dependent Claim
43 words
The method as claimed in claim 1 further including the step of dividing the digitized video signal into subareas so that the characterizing variables of the signal distributions of the video signal are used for defining the signal subareas representing the combustion process.
Claim 6
Dependent Claim
43 words
The method as claimed in claim 2 further including the step of dividing the digitized video signal into subareas so that the characterizing variables of the signal distributions of the video signal are used for defining the signal subareas representing the combustion process.
Claim 7
Dependent Claim
43 words
The method as claimed in claim 3 further including the step of dividing the digitized video signal into subareas so that the characterizing variables of the signal distributions of the video signal are used for defining the signal subareas representing the combustion process.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |