CN110369265B - Directional electronic control method - Google Patents
Directional electronic control method Download PDFInfo
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- CN110369265B CN110369265B CN201910296625.XA CN201910296625A CN110369265B CN 110369265 B CN110369265 B CN 110369265B CN 201910296625 A CN201910296625 A CN 201910296625A CN 110369265 B CN110369265 B CN 110369265B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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Abstract
The invention relates to a directional electronic control method, which comprises the step of using a directional electronic control system to carry out self-adaptive control on screening and separating equipment for carrying out screening and separating operation of coal blocks based on distribution density of the coal blocks in a coal pile.
Description
Technical Field
The invention relates to the field of electronic control, in particular to a directional electronic control method.
Background
The electronic control mainly refers to weak current control and strong current control, is a technical subject, can not be used for looking at specific conditions in general, is commonly used for realizing the communication between a single chip microcomputer and a computer, the computer is used as main processing equipment and is given to the single chip microcomputer for information, and the single chip microcomputer realizes the control.
The electrical control system is generally called an electrical equipment secondary control circuit, different equipment has different control circuits, and the control modes of high-voltage electrical equipment and low-voltage electrical equipment are different.
The main differences between electronic control and electrical control are: the electric control range is larger, the electronic control range is small, and generally the electric control comprises the electronic control.
Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into underground coal mines and opencast coal mines. When the coal seam is far from the ground surface, a tunnel is usually dug to the underground, so that the coal is a mineworker coal mine. When the coal seam is very close to the earth surface, the coal is generally excavated by directly stripping the earth surface, which is an open pit coal mine.
Coal mines encompass a large area above ground and below ground as well as associated facilities. Coal mines are reasonable spaces excavated by humans when excavating geological formations rich in coal and generally include roadways, wells, and mining surfaces, among others. Coal is the most predominant solid fuel, one of the flammable organic rocks. It is formed by that the flourishing plants grown in a certain geologic age are gradually piled up into a thick layer in a proper geologic environment, and are buried in the water bottom or silt, and then are subjected to the natural coalification action in a long geologic age. In the geologic periods of the world, most coal is produced in the stratums of the stone charm, the pilaster, the Jurassic and the third era, which is an important coal-forming era. The carbon content of the coal is generally 46-97%, and the coal is brown to black and has dull to metallic luster. According to the degree of coalification, coal can be classified into peat, lignite, bituminous coal and anthracite.
In the prior art, in the case of a coal pile consisting of coal blocks to be screened and separated, a control mode of a screening and separating device for performing the screening and separating operation is fixed, and the control mode completely depends on manual experience to set various working parameters, for example, the amplitude of the back-and-forth oscillation of the screening and separating device is set, so that the self-adaptive level of the screening and separating device is low.
Disclosure of Invention
The invention needs to have the following important invention points:
(1) in view of the characteristics that the coal briquette in the coal pile is denser in distribution density, the coal briquette particles are smaller, and the reciprocating oscillation amplitude required by the screening and separating equipment is smaller, the screening and separating equipment for performing the coal briquette screening and separating operation is subjected to self-adaptive control;
(2) on the basis of wavelet filtering, whether dynamic range adjustment is performed on a single channel value image or not is determined according to the content of the image to be processed, and dynamic range adjustment is not performed on other channel value images, so that the data volume of dynamic range adjustment processing is reduced.
According to an aspect of the present invention, there is provided a directional electronic control method including using a directional electronic control system to adaptively control a screening separation apparatus performing a coal cake screening separation operation based on a coal cake distribution density in a coal pile, the directional electronic control system including: the coal block detection device is connected with the equalization processing device and used for identifying each coal block target from the histogram processing image based on the coal block imaging characteristics and determining the corresponding coal block distribution density based on the number of the coal block targets in the histogram processing image; the screening and separating equipment is connected with the coal block detecting equipment and is used for determining the back-and-forth oscillation amplitude adopted by the screening and separating equipment when the screening and separating operation is executed based on the received coal block distribution density; the monitoring video recording equipment is arranged on a coal mine site and used for carrying out video recording operation on the coal pile so as to obtain and output a corresponding monitoring video recording image; the noise monitoring equipment is connected with the monitoring video recording equipment and used for receiving the monitoring video recording image and identifying various types of noise in the monitoring video recording image; the amplitude analysis equipment is connected with the noise monitoring equipment and is used for outputting the average value of the maximum amplitudes of various types of noise in the monitoring video image as a representative amplitude; the AVR32 control chip is respectively connected with the amplitude analysis equipment and the wavelet filtering equipment and is used for receiving the representative amplitude and starting the wavelet filtering equipment when the representative amplitude exceeds the limit; the AVR32 control chip is also configured to turn off the wavelet filtering device when the representative amplitude is not exceeded.
The directional electronic control method is ingenious in design and convenient to apply. Due to the fact that coal briquette particles in the coal pile are smaller and the back-and-forth oscillation amplitude required by the screening and separating equipment is smaller, the screening and separating operation of the coal briquettes is executed, and therefore the self-adaptive control level of the screening and separating equipment is improved.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a coal mining injector at a coal mine site to which a directional electronic control system according to an embodiment of the present invention is applied.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to overcome the defects, the invention builds a directional electronic control method, which comprises the step of using a directional electronic control system to carry out self-adaptive control on screening and separating equipment for carrying out the screening and separating operation of coal briquettes based on the distribution density of the coal briquettes in a coal pile. The directional electronic control system can effectively solve the corresponding technical problems.
Fig. 1 is a schematic structural view of a coal mining injector at a coal mine site to which a directional electronic control system according to an embodiment of the present invention is applied. Wherein, 1 is a shell, and 2 is a propulsion shaft.
A directional electronic control system shown according to an embodiment of the present invention includes:
the coal block detection device is connected with the equalization processing device and used for identifying each coal block target from the histogram processing image based on the coal block imaging characteristics and determining the corresponding coal block distribution density based on the number of the coal block targets in the histogram processing image;
the screening and separating equipment is connected with the coal block detecting equipment and is used for determining the back-and-forth oscillation amplitude adopted by the screening and separating equipment when the screening and separating operation is executed based on the received coal block distribution density;
the monitoring video recording equipment is arranged on a coal mine site and used for carrying out video recording operation on the coal pile so as to obtain and output a corresponding monitoring video recording image;
the noise monitoring equipment is connected with the monitoring video recording equipment and used for receiving the monitoring video recording image and identifying various types of noise in the monitoring video recording image;
the amplitude analysis equipment is connected with the noise monitoring equipment and is used for outputting the average value of the maximum amplitudes of various types of noise in the monitoring video image as a representative amplitude;
the AVR32 control chip is respectively connected with the amplitude analysis equipment and the wavelet filtering equipment and is used for receiving the representative amplitude and starting the wavelet filtering equipment when the representative amplitude exceeds the limit;
the AVR32 control chip is also used for closing the wavelet filter device when the representative amplitude value is not over-limit;
the wavelet filtering device is used for receiving the monitoring video image from the noise monitoring device when the monitoring video image is started, and performing wavelet filtering of a nearest neighbor method on the monitoring video image to obtain a corresponding wavelet filtering image;
the channel value analysis equipment is used for receiving the wavelet filtering image and analyzing the channel value of each pixel point in the wavelet filtering image so as to obtain a red channel value, a blue channel value and a green channel value of each pixel point;
the self-adaptive processing equipment is used for receiving the red channel value, the blue channel value and the green channel value of each pixel point and executing dynamic range adjustment on a green channel value image formed by the green channel values of the pixel points to obtain an adjusted green image;
the merging processing equipment is connected with the self-adaptive processing equipment and is used for merging the blue channel value image formed by the blue channel values of all the pixel points, the red channel value image formed by the red channel values of all the pixel points and the green channel value image formed by the green channel values of all the pixel points so as to obtain a real-time processing image;
the equalization processing equipment is connected with the merging processing equipment and is used for executing histogram equalization processing on the real-time processing image so as to obtain a corresponding histogram processing image;
the SDRAM storage chip is connected with the self-adaptive processing equipment and is used for receiving and storing a blue channel value image formed by blue channel values of all pixel points, a red channel value image formed by red channel values of all pixel points and a green channel value image formed by green channel values of all pixel points;
wherein the noise monitoring device and the amplitude analysis device share the same 16-bit parallel data interface;
in the screening and separating device, the denser the distribution density of the received coal blocks, the smaller the determined back-and-forth oscillation amplitude is.
Next, the detailed structure of the directional electronic control system of the present invention will be further described.
The directional electronic control system can further comprise:
and the field dust extraction equipment is respectively connected with the currently unused suspension pins of the coal briquette detection equipment, the screening separation equipment and the equalization processing equipment so as to obtain the current dust concentration of the currently unused suspension pins of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pins of the screening separation equipment and the current dust concentration of the currently unused suspension pins of the equalization processing equipment.
The directional electronic control system can further comprise:
and the main control equipment is connected with the field dust extraction equipment and is used for receiving the current dust concentration of the currently unused suspension pins of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pins of the screening and separating equipment and the current dust concentration of the currently unused suspension pins of the equalization processing equipment, and performing weighted mean operation on the current dust concentration of the currently unused suspension pins of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pins of the screening and separating equipment and the current dust concentration of the currently unused suspension pins of the equalization processing equipment to obtain the reference pin dust concentration.
The directional electronic control system can further comprise:
and the FLASH memory is used for pre-storing three weight values of the current dust concentration of the currently unused suspension pin of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pin of the screening separation equipment and the current dust concentration of the currently unused suspension pin of the equalization processing equipment, which respectively participate in weighted mean operation.
In the directional electronic control system:
the main control device is also used for multiplying the obtained reference pin dust concentration by a balance factor to obtain the silicon wafer entity dust concentration of the coal block detection device.
The directional electronic control system can further comprise:
and the instant display equipment is connected with the main control equipment and is used for receiving the silicon wafer entity dust concentration of the coal block detection equipment and instantly displaying the character string corresponding to the silicon wafer entity dust concentration of the coal block detection equipment.
In the directional electronic control system:
in the FLASH memory, the current dust concentration of the currently unused suspension pin of the coal briquette detection device, the current dust concentration of the currently unused suspension pin of the screening separation device and the current dust concentration of the currently unused suspension pin of the equalization processing device respectively participate in the weighted average operation, and the three weight values are different in size.
In the directional electronic control system:
the FLASH memory is connected with the main control equipment and is used for pre-storing the weighing factors.
In addition, the term Wavelet (Wavelet) is a small waveform as the name implies. By "small" it is meant that he has attenuating properties; the term "wave" refers to its wave nature, the amplitude of which is in the form of an oscillation between positive and negative phases. Compared with Fourier transform, the wavelet transform is a local analysis of time (space) frequency, and the wavelet transform gradually refines signals (functions) in a multi-scale mode through telescopic translation operation, finally achieves time subdivision at high frequency and frequency subdivision at low frequency, can automatically adapt to the requirement of time-frequency signal analysis, can focus on any details of signals, solves the problem of difficulty of Fourier transform, and becomes a major breakthrough in a scientific method following the Fourier transform. Wavelet transforms have been known as "mathematical microscopes".
The application of wavelet analysis is closely coupled with the theoretical study of wavelet analysis. He has achieved remarkable achievements in the field of the scientific and technical information industry. Electronic information technology is an important area of six high and new technologies, and its important aspect is image and signal processing. Nowadays, signal processing has become an important part of the modern scientific and technical work, and the purpose of signal processing is: accurate analysis, diagnosis, encoding compression and quantization, fast transfer or storage, accurate reconstruction (or recovery). From a mathematical point of view, the signal and image processing can be considered as signal processing (the image can be considered as a two-dimensional signal) together, and can be attributed to the signal processing problem in many applications of many analyses in wavelet analysis. For signals whose properties are stable and invariant over time, the ideal tool for processing remains fourier analysis. However, most of the signals in practical applications are unstable, and a tool particularly suitable for unstable signals is wavelet analysis.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. A directional electronic control method comprising using a directional electronic control system to adaptively control a screening separation apparatus that performs a coal block screening separation operation based on a coal block distribution density in a coal pile, the directional electronic control system comprising:
the coal block detection device is connected with the equalization processing device and used for identifying each coal block target from the histogram processing image based on the coal block imaging characteristics and determining the corresponding coal block distribution density based on the number of the coal block targets in the histogram processing image;
the screening and separating equipment is connected with the coal block detecting equipment and is used for determining the back-and-forth oscillation amplitude adopted by the screening and separating equipment when the screening and separating operation is executed based on the received coal block distribution density;
the monitoring video recording equipment is arranged on a coal mine site and used for carrying out video recording operation on the coal pile so as to obtain and output a corresponding monitoring video recording image;
the noise monitoring equipment is connected with the monitoring video recording equipment and used for receiving the monitoring video recording image and identifying various types of noise in the monitoring video recording image;
the amplitude analysis equipment is connected with the noise monitoring equipment and is used for outputting the average value of the maximum amplitudes of various types of noise in the monitoring video image as a representative amplitude;
the AVR32 control chip is respectively connected with the amplitude analysis equipment and the wavelet filtering equipment and is used for receiving the representative amplitude and starting the wavelet filtering equipment when the representative amplitude exceeds the limit;
the AVR32 control chip is also used for closing the wavelet filter device when the representative amplitude value is not over-limit;
the wavelet filtering device is used for receiving the monitoring video image from the noise monitoring device when the monitoring video image is started, and performing wavelet filtering of a nearest neighbor method on the monitoring video image to obtain a corresponding wavelet filtering image;
the channel value analysis equipment is used for receiving the wavelet filtering image and analyzing the channel value of each pixel point in the wavelet filtering image so as to obtain a red channel value, a blue channel value and a green channel value of each pixel point;
the self-adaptive processing equipment is used for receiving the red channel value, the blue channel value and the green channel value of each pixel point and executing dynamic range adjustment on a green channel value image formed by the green channel values of the pixel points to obtain an adjusted green image;
the merging processing equipment is connected with the self-adaptive processing equipment and is used for merging the blue channel value image formed by the blue channel values of all the pixel points, the red channel value image formed by the red channel values of all the pixel points and the green channel value image formed by the green channel values of all the pixel points so as to obtain a real-time processing image;
the equalization processing equipment is connected with the merging processing equipment and is used for executing histogram equalization processing on the real-time processing image so as to obtain a corresponding histogram processing image;
the SDRAM storage chip is connected with the self-adaptive processing equipment and is used for receiving and storing a blue channel value image formed by blue channel values of all pixel points, a red channel value image formed by red channel values of all pixel points and a green channel value image formed by green channel values of all pixel points;
wherein the noise monitoring device and the amplitude analysis device share the same 16-bit parallel data interface;
in the screening and separating device, the denser the distribution density of the received coal blocks, the smaller the determined back-and-forth oscillation amplitude is.
2. The method of claim 1, wherein the system further comprises:
and the field dust extraction equipment is respectively connected with the currently unused suspension pins of the coal briquette detection equipment, the screening separation equipment and the equalization processing equipment so as to obtain the current dust concentration of the currently unused suspension pins of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pins of the screening separation equipment and the current dust concentration of the currently unused suspension pins of the equalization processing equipment.
3. The method of claim 2, wherein the system further comprises:
and the main control equipment is connected with the field dust extraction equipment and is used for receiving the current dust concentration of the currently unused suspension pins of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pins of the screening and separating equipment and the current dust concentration of the currently unused suspension pins of the equalization processing equipment, and performing weighted mean operation on the current dust concentration of the currently unused suspension pins of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pins of the screening and separating equipment and the current dust concentration of the currently unused suspension pins of the equalization processing equipment to obtain the reference pin dust concentration.
4. The method of claim 3, wherein the system further comprises:
and the FLASH memory is used for pre-storing three weight values of the current dust concentration of the currently unused suspension pin of the coal briquette detection equipment, the current dust concentration of the currently unused suspension pin of the screening separation equipment and the current dust concentration of the currently unused suspension pin of the equalization processing equipment, which respectively participate in weighted mean operation.
5. The method of claim 4, wherein:
the main control device is also used for multiplying the obtained reference pin dust concentration by a balance factor to obtain the silicon wafer entity dust concentration of the coal block detection device.
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