Coal quality detection device based on combination of machine vision and multispectrum

Abstract

The invention discloses a coal quality detection device based on combination of machine vision and multispectrum, which relates to the field of automatic coal detection and is characterized by comprising a coal conveying mechanism, a sample coal collecting mechanism, a sample coal conveying mechanism and a coal quality detection assembly, the sample coal collecting mechanism periodically collects coal from the coal conveying mechanism, and the coal is conveyed to the detection assembly through the sample coal conveying mechanism; according to the invention, the integrated operation from sample pretreatment to detection analysis is realized, the detection efficiency is improved, and meanwhile, the equipment occupied space and the operation complexity are reduced; according to the invention, operations such as sampling, conveying, positioning and detection of coal samples can be automatically completed, manual intervention is reduced, the stability and reliability of a detection result are improved, and meanwhile, the labor cost is saved; according to the method, the appearance characteristics and chemical component information of the coal can be obtained at the same time, compared with a single detection technology, more comprehensive and more accurate coal quality data can be provided, and more powerful support is provided for quality control and optimal utilization of the coal.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic online detection of coal, and in particular relates to a coal quality detection device based on the combination of machine vision and multi-spectrum. Background Art

[0002] In the coal industry, coal quality testing is a key link in ensuring coal quality and optimizing coal utilization efficiency. Traditional coal quality testing mainly relies on chemical analysis methods. Although these methods can provide relatively accurate results, they have many problems, such as long testing time, complex operation, high cost, and possible environmental pollution. Therefore, the development of more efficient and environmentally friendly coal quality testing technology has become an important demand of the coal industry.

[0003] At present, most of the mechanical devices used in the field of coal detection have single functions, mainly focusing on pre-processing links such as sampling, crushing, and grinding, or only used for transporting and sorting coal. Although these devices have improved the detection efficiency to a certain extent, they cannot directly analyze the coal quality and still need to rely on subsequent chemical analysis or spectral analysis equipment. In addition, the existing mechanical devices still have deficiencies in terms of automation, detection accuracy and comprehensiveness, and it is difficult to meet the coal industry's needs for fast, accurate and comprehensive detection.

[0004] With the rapid development of machine vision technology and multi-spectral technology, combining these advanced detection technologies with mechanical devices to develop an integrated coal quality detection device has become a new trend in the development of coal industry technology. Machine vision technology can quickly obtain the appearance characteristics of coal, such as color, texture and particle size; multi-spectral technology can deeply detect the chemical composition of coal, such as ash, sulfur, volatile matter and calorific value. By integrating these technologies with mechanical devices, not only can comprehensive, rapid and non-destructive detection of coal quality be achieved, but also the automation and efficiency of the detection process can be improved.

[0005] Although the application prospects of machine vision and multi-spectral technology in coal quality detection are broad, there is currently a lack of an efficient mechanical device that integrates these technologies in the market. Most of the existing detection equipment has a single function and it is difficult to meet the coal industry's demand for intelligent and automated detection. Therefore, the development of a coal quality detection mechanical device based on machine vision and multi-spectral technology can not only improve detection efficiency and accuracy, but also promote the intelligent development of the coal industry, which has important practical significance. Summary of the invention

[0006] In order to solve the problems existing in the existing coal detection devices, the purpose of the present invention is to design a coal quality detection device based on the combination of machine vision and multi-spectrum, which efficiently integrates machine vision technology and multi-spectrum technology to improve the efficiency and accuracy of coal quality detection.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a coal quality detection device based on the combination of machine vision and multi-spectrum, including a coal conveying mechanism, a coal sample collection mechanism, a coal sample conveying mechanism, and a coal quality detection component.

[0008] The coal conveying mechanism includes a support frame, a side support plate, a roller, a roller motor, and a belt. The side support plate, the roller, and the belt are installed above the support frame. Both ends of the roller are vertically installed on the side support plate. The belt fits tightly with the roller. Driven by the roller motor, the belt always rotates around the roller to transport coal.

[0009] The sample coal collection mechanism includes a coal mining plate, a coal mining support frame, a coal mining plate motor, a motor bracket, and a coal receiving trough. The coal mining support frame is installed on two side support plates in the coal conveying mechanism. A total of two coal mining support frames are installed, which are divided into left and right sides. Both ends of the coal mining plate are installed on the shaft holes at the cross beams of the two coal mining support frames, and rotate around the hole shafts at the cross beams of the left and right coal mining support frames. The motor bracket is connected to the cross beam of the right coal mining support frame, the coal mining plate motor is fixed on the motor bracket, and the output shaft of the coal mining plate motor is connected to the right shaft of the coal mining plate. One end of the coal receiving trough is connected to the side support plate in the coal conveying mechanism, and the other end is connected to the sample coal conveying mechanism.

[0010] The sample coal conveying mechanism includes a coal crusher and a sample coal conveyor belt. The coal crusher further crushes the coal from the coal receiving trough into a size suitable for detection. One end of the sample coal conveyor belt is located below the coal crusher and is used to convey the crushed coal sample to the bottom of the various detection devices in the coal quality detection assembly.

[0011] The coal quality detection component includes a support plate, image analysis detection equipment, near-infrared spectroscopy (NIRS) detection equipment, X-ray fluorescence spectroscopy (XRF) detection equipment, and laser induced breakdown spectroscopy (LIBS) detection equipment. All four detection devices are located above the support plate.

[0012] Furthermore, the coal conveying mechanism and the sample coal conveying mechanism are both provided with receiving boxes at the ends thereof for receiving the coal and the sample coal.

[0013] Furthermore, when the coal conveying mechanism is working, the belt continuously drives the coal to move forward and ensures that there is always coal on the belt.

[0014] Furthermore, the coal sample collection mechanism works periodically, and the coal mining plate, driven by the coal mining plate motor, periodically collects the coal on the belt of the coal conveying mechanism.

[0015] Furthermore, the coal crusher of the coal sample conveying mechanism can adjust the size of coal crushing according to actual detection requirements.

[0016] Furthermore, the support plate in the coal quality detection assembly is located above the coal sample conveyor belt in the coal sample conveying mechanism.

[0017] Furthermore, the various detection devices in the coal quality detection assembly are, from near to far relative to the coal crusher, image analysis detection equipment, near infrared spectroscopy (NIRS) detection equipment, X-ray fluorescence spectroscopy (XRF) detection equipment, and laser induced breakdown spectroscopy (LIBS) detection equipment.

[0018] Furthermore, various testing equipment are equipped with cameras, which use machine vision to assist the corresponding testing equipment in accurately locating coal samples.

[0019] Furthermore, the image analysis detection equipment is used to detect non-coal components such as impurities and rocks in coal samples.

[0020] Furthermore, the multi-spectral detection equipment is used to detect various chemical components of coal in the coal sample.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention integrates a machine vision module and a multispectral detection module into a mechanical device, realizing an integrated operation from sample pretreatment to detection and analysis, improving detection efficiency while reducing equipment footprint and operational complexity.

[0023] (2) The present invention, through mechanical automation design, can automatically complete the sampling, transportation, positioning and detection of coal samples, thereby reducing human intervention, improving the stability and reliability of the detection results, and saving labor costs.

[0024] (3) The present invention combines machine vision and multi-spectral technology to simultaneously obtain the appearance characteristics and chemical composition information of coal. Compared with a single detection technology, it can provide more comprehensive and accurate coal quality data, providing more powerful support for coal quality control and optimal utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a front view of a coal quality detection device based on machine vision and multi-spectrum provided in Example 1 of the present invention.

[0027] Figure 2 It is an isometric view of a coal quality detection device based on machine vision and multi-spectrum provided in Example 1 of the present invention.

[0028] Figure 3 It is a left view of a coal quality detection device based on machine vision and multi-spectrum provided in Example 1 of the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of a coal mining plate of a coal quality detection device based on the combination of machine vision and multi-spectrum provided in Example 1 of the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of a coal crusher of a coal quality detection device based on machine vision and multi-spectrum provided in Example 1 of the present invention.

[0031] Figure 6 It is an isometric view of a coal crusher of a coal quality detection device based on machine vision and multi-spectrum provided in Example 1 of the present invention.

[0032] In the figure:

[0033] 1-ground; 2-roller; 3-belt; 4-coal mining plate motor; 5-motor support plate; 6-coal mining plate; 7-coal mining support frame; 8-coal receiving chute; 9-coal receiving box I; 10-coal crusher; 11-baffle; 12-sample coal conveyor belt; 13-image analysis detection equipment; 14-near infrared spectroscopy (NIRS) detection equipment; 15-X-ray fluorescence spectroscopy (XRF) detection equipment; 16-laser induced breakdown spectroscopy (LIBS) detection equipment; 17-coal receiving box II; 18-crusher motor; 19-side support plate; 20-aluminum profile I; 21-aluminum profile II; 22-aluminum profile III; 23-support plate. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] In the absence of conflict, the embodiments in this application and the features in the embodiments may be combined with each other.

[0038] Example 1

[0039] In a typical embodiment of the present invention, Figure 1-Figure 6 As shown, a coal quality detection device based on the combination of machine vision and multi-spectrum is given.

[0040] like Figure 1 , 2 As shown, the coal quality detection device based on the combination of machine vision and multi-spectrum includes a coal conveying mechanism, a coal sample collection mechanism, a coal sample conveying mechanism, and a coal quality detection component.

[0041] The coal conveying mechanism includes an aluminum profile I 20, an aluminum profile II 21, an aluminum profile III 22, a side support plate 19, a roller 2, and a belt 3; two aluminum profiles I 20, three aluminum profiles II 21, and six aluminum profiles III 22 are welded to form a support frame; two side support plates 19, two rollers 2, and the belt 3 are installed above the support frame, and both ends of the rollers 2 are vertically installed on the side support plates 19, and the side support plates 19 are vertically installed relative to the ground 1, and the belt 3 is tightly fitted with the rollers 2; when the coal conveying mechanism is working, the belt 3 always rotates around the rollers 2 to transport coal, and the coal receiving box I 9 is located at the end of the coal conveying mechanism to receive coal dropped from the belt 3.

[0042] The sample coal collection mechanism includes a coal mining plate 6, a coal mining support frame 7, a coal mining plate motor 4, a motor bracket 5, and a coal receiving trough 8; the coal mining support frame 7 is installed on two side support plates 19 in the coal conveying mechanism, and two coal mining support frames 7 are installed in total, divided into left and right sides, and both ends of the coal mining plate 6 are installed on the axial holes at the cross beams of the two coal mining support frames 7. The coal mining plate 6 rotates around the hole axes at the cross beams of the left and right coal mining support frames 7. The motor bracket 5 is connected to the cross beam of the right coal mining support frame 7, and the coal mining plate motor 4 is fixed on the motor bracket 5. The output shaft of the coal mining plate motor 4 is connected to the right side shaft of the coal mining plate 6. One end of the coal receiving trough 8 is connected to the side support plate 2 in the coal conveying mechanism, and the other end is connected to the coal crusher 10 in the sample coal conveying mechanism.

[0043] The sample coal conveying mechanism includes a coal crusher 10, a baffle 11, a crusher motor 18, and a sample coal conveyor belt 12; the coal crusher 10, driven by the crusher motor 18, further crushes the coal from the coal receiving trough 8 to a size suitable for detection, and the baffle 11 prevents the coal from splashing everywhere during the crushing process. One end of the sample coal conveyor belt 12 is located below the coal crusher 10, and is used to transport the crushed coal samples to the bottom of the four detection devices in the coal quality detection assembly. The coal receiving box II17 is located at the end of the sample coal conveying mechanism, and is used to receive coal samples dropped from the sample coal conveyor belt 12.

[0044] It should be noted that in this embodiment, since the main structures of the coal conveying mechanism and the coal sample conveying mechanism are similar and are common knowledge in the field, not all parts constituting the coal conveying mechanism and the coal sample conveying mechanism are listed, which does not affect the demonstration and explanation of this embodiment.

[0045] The coal quality detection assembly includes a support plate 23, an image analysis detection device 13, a near-infrared spectroscopy (NIRS) detection device 14, an X-ray fluorescence spectroscopy (XRF) detection device 15, and a laser induced breakdown spectroscopy (LIBS) detection device 16; the support plate 23 is located above the coal sample conveyor belt 12 in the coal sample conveying mechanism, and the four detection devices are all installed above the support plate 23.

[0046] In this embodiment, when the coal conveying mechanism is working, the belt 3 continuously drives the coal to move forward and ensures that there is always coal on the belt 3.

[0047] In this embodiment, if Figure 3 , 4 As shown, the coal sample collection mechanism works periodically, and the coal mining plate 6 is driven by the coal mining plate motor 4 to periodically collect the coal on the belt 3 of the coal conveying mechanism.

[0048] In this embodiment, if Figure 5 , 6 As shown, the coal crusher 10 can adjust the size of coal crushing by replacing the toothed disc.

[0049] In this embodiment, the four detection devices in the coal quality detection assembly are, from near to far relative to the coal crusher 10, an image analysis detection device 13, a near-infrared spectroscopy (NIRS) detection device 14, an X-ray fluorescence spectroscopy (XRF) detection device 15, and a laser induced breakdown spectroscopy (LIBS) detection device 16.

[0050] In this embodiment, all four detection devices are equipped with cameras, and machine vision is used to assist the corresponding detection devices in accurately locating the coal samples.

[0051] In this embodiment, the image analysis detection device 13 is used to detect non-coal components such as impurities and rocks in the coal sample.

[0052] In this embodiment, three multi-spectral detection devices are used to detect various chemical components of coal in the coal sample.

[0053] In this embodiment, the complete coal quality detection process is as follows:

[0054] After the coal quality detection device based on the combination of machine vision and multi-spectrum is put into use, the coal conveying mechanism works continuously, and the belt 3 drives the coal to run. When the coal reaches the end of the coal conveying mechanism, it falls into the coal receiving box I 9; the sample coal collection mechanism works periodically, and the coal mining plate motor rotates periodically, driving the coal mining plate to rotate, and then scraping the coal on the belt 3 into the coal receiving trough 8; the sample coal conveying mechanism works continuously, and the coal in the coal receiving trough 8 falls into the coal crusher 10, and the crusher motor 18 drives the two rows of rolling teeth of the coal crusher 10 to rotate to further crush the coal to a size suitable for detection. During the coal crushing process, the coal splashed out of the coal crusher 10 is blocked by the baffle 11. The crushed coal is called sample coal, and the sample coal falls onto the sample coal conveyor belt 12 under the coal crusher 10. The sample coal conveyor belt 12 drives the sample coal to enter the four detection devices in the coal quality detection assembly. When the sample coal reaches the end of the sample coal conveying mechanism, it falls into the coal receiving box II 17; the coal quality detection component works continuously, first the image analysis detection equipment detects the impurities, rocks and other components in the sample coal, followed by the near infrared spectroscopy (NIRS) detection equipment 14, the X-ray fluorescence spectroscopy (XRF) detection equipment 15, and the laser induced breakdown spectroscopy (LIBS) detection equipment 16. The three spectral detection equipment detect the chemical components that make up the coal. After the four detection equipment completes the detection of the sample coal, the results are transmitted to the terminal device.

[0055] The above process runs continuously, thus ensuring that the coal quality detection device based on machine vision and multi-spectrum can continuously perform coal quality detection.

[0056] The above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A coal quality detection device based on machine vision and multi-spectrum, characterized in that: It includes coal conveying mechanism, coal sample collecting mechanism, coal sample conveying mechanism and coal quality detection component; The coal conveying mechanism includes a support frame, a side support plate, a roller, a roller motor, and a belt. The side support plate, the roller, and the belt are installed above the support frame. Both ends of the roller are vertically installed on the side support plate. The belt fits tightly with the roller. Driven by the roller motor, the belt always rotates around the roller to transport coal. The sample coal collection mechanism includes a coal mining plate, a coal mining support frame, a coal mining plate motor, a motor bracket, and a coal receiving trough. The coal mining support frame is installed on two side support plates in the coal conveying mechanism. A total of two coal mining support frames are installed, which are divided into left and right sides. Both ends of the coal mining plate are installed on the shaft holes at the cross beams of the two coal mining support frames, and rotate around the hole shafts at the cross beams of the left and right coal mining support frames. The motor bracket is connected to the cross beam of the right coal mining support frame, the coal mining plate motor is fixed on the motor bracket, and the output shaft of the coal mining plate motor is connected to the right shaft of the coal mining plate. One end of the coal receiving trough is connected to the side support plate in the coal conveying mechanism, and the other end is connected to the sample coal conveying mechanism. The sample coal conveying mechanism includes a coal crusher and a sample coal conveyor belt. The coal crusher further crushes the coal from the coal receiving trough into a size suitable for detection. One end of the sample coal conveyor belt is located below the coal crusher and is used to convey the crushed coal sample to the bottom of the various detection devices in the coal quality detection assembly. The coal quality detection component includes a support plate, image analysis detection equipment, near-infrared spectroscopy (NIRS) detection equipment, X-ray fluorescence spectroscopy (XRF) detection equipment, and laser induced breakdown spectroscopy (LIBS) detection equipment. All four detection devices are located above the support plate.

2. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: The coal conveying mechanism and the sample coal conveying mechanism are both provided with receiving boxes at the ends thereof for receiving coal and sample coal.

3. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: When the coal conveying mechanism is working, the belt continuously drives the coal to move forward and ensures that there is always coal on the belt.

4. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: The coal sample collection mechanism works periodically, and the coal mining plate, driven by the coal mining plate motor, periodically collects the coal on the belt of the coal conveying mechanism.

5. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: The coal crusher of the sample coal conveying mechanism can adjust the size of coal crushing according to actual detection requirements.

6. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: The support plate in the coal quality detection assembly is located above the sample coal conveyor belt in the sample coal conveying mechanism.

7. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: The various detection devices in the coal quality detection assembly are, from near to far relative to the coal crusher, image analysis detection equipment, near infrared spectroscopy (NIRS) detection equipment, X-ray fluorescence spectroscopy (XRF) detection equipment, and laser induced breakdown spectroscopy (LIBS) detection equipment.

8. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: Various detection equipment are equipped with cameras, and machine vision is used to assist the corresponding detection equipment to accurately locate coal samples.

9. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: Image analysis detection equipment is used to detect impurities, rocks and other non-coal components in coal samples.

10. The coal quality detection device based on machine vision and multi-spectrum according to claim 1 is characterized in that: Three types of spectral detection equipment, namely near infrared spectroscopy (NIRS) detection equipment, X-ray fluorescence spectroscopy (XRF) detection equipment and laser induced breakdown spectroscopy (LIBS) detection equipment, are used to detect various chemical components of coal in coal samples.

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