Furnace hearth flame detecting method based on intelligent-control computer vision technology

Abstract

The invention discloses a furnace hearth flame detecting method based on an intelligent-control computer vision technology. The furnace hearth flame detecting method comprises the following steps of: using a CCD (Charge Coupled Device) camera to take a picture for furnace hearth flame by an optical fibre image sensor, and transmitting the taken image information signal to a real-time signal processor; using a wavelet packet arithmetic to perform de-noising processing to the signal of the image information in the real-time signal processor; and using a BP (Back Propagation) neural network module to detect and distinguish the de-noised image information. The computer vision technology based on the wavelet packet and the BP neural network is applied to the image information analysis and treatment of the power plant furnace hearth flame, so that the intelligent treatment of the power plant furnace hearth flame information can be achieved, and the signal noises in background flame can be effectively removed to acquire a more real and accurate signal; the combustion condition of each combustor can be relatively grasped in a quantitative manner to keep the best combustion condition of a boiler, so that the safe and high-efficient operation of the device is achieved.

Description

technical field [0001] The invention relates to a method for detecting and analyzing a furnace flame in a power plant by using computer vision technology, in particular to a furnace flame detection method based on the computer vision technology of wavelet packets and BP neural network. Background technique [0002] The stable combustion of boilers in power plants is crucial to the safety of generating sets and the adequate supply of electricity. With the diversification of fuel and combustion methods of large-scale units, it is particularly important to monitor the combustion system, that is, the flame detection of the boiler furnace, during the start-up and shutdown of the boiler and the handling of accidents. [0003] The flame detection of pulverized coal boiler in power plant is an important measure to improve the safety and economy of power plant operation. At present, the flame detectors widely used in power plants in our country belong to the infrared type, the visib...

AI Technical Summary

Problems solved by technology

The field of view of this type of flame detector is small, and when the coal type changes or the load changes cause the ignition position to drift, it will seriously affect the detection effect of the furnace flame

And this kind of flame detector can only give the switching signal of whether there is flame, and cannot further judge the state of flame burning

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