Rock debris image on-line automatic acquisition system and image acquisition method thereof

Abstract

The invention discloses a rock debris image on-line automatic acquisition system and an image acquisition method thereof.The automatic acquisition system comprises an explosion-proof box, an upper computer, an image acquisition device, a master control system, a focusing mechanism, a cleaning mechanism, a white light lamp and a fluorescent lamp assembly, and the focusing mechanism, the cleaning mechanism, the white light lamp and the fluorescent lamp assembly are electrically connected with the master control system. A shading cylinder is arranged at the bottom of the explosion-proof box, the cleaning mechanism comprises an inner wiping rod, an outer wiping rod and a driving mechanism, and the tail end of the inner wiping rod magnetically drives the tail end of the outer wiping rod to move around the rotating center to clean the outer surface of the glass window; the image acquisition method comprises the steps of rock debris sample preparation, cleaning action, automatic focusing, acquisition of a white light image with optimal definition and shooting of a fluorescence image. The acquisition system can better meet the on-site anti-explosion requirement, realizes the on-line automatic image acquisition operation of mining while drilling of rock debris samples, provides detection conditions meeting the detection environment requirements, is beneficial to quickly knowing lithology on a logging site, and improves the logging efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of rock cuttings image acquisition equipment, and in particular to an online automatic rock cuttings image acquisition system and an image acquisition method thereof. Background Art

[0002] Rock cuttings are intuitive materials for understanding stratum lithology and oil and gas layers. There are currently two ways to identify rock cuttings, namely manual identification and image recognition. Manual identification is based on the naked eye judgment of logging staff. This method has strong subjectivity and inaccurate recognition and judgment of rock cuttings. In order to isolate the external environment, image recognition equipment is generally set up in the laboratory. Therefore, the rock cutting samples need to be packaged and transported to the laboratory in batches. This method is inefficient and is not conducive to real-time grasp of the geological information in the well. In addition, the geological information contained in the rock cutting samples stored for a long time is easy to become inaccurate.

[0003] As drilling speeds are getting faster and faster, the quality of cuttings is getting higher and higher. In order to obtain geological information in real time, the current cuttings identification method can no longer meet the needs of drilling engineering. It is urgent to develop online cuttings image acquisition technology at the logging site to obtain geological information in the well in a timely manner.

[0004] The logging site environment is complex, not only exposed to wind and sun, but also to destructive factors such as flying chips. The difficulties in developing online acquisition technology include: 1. The acquisition equipment is easily damaged; 2. Affected by dust, droplets, etc., the image acquisition effect is poor; In order to solve the above problems, it is urgent to develop a "drilling and mining" and explosion-proof rock cuttings image acquisition system to meet the current logging requirements. Summary of the invention

[0005] The object of the present invention is to provide an online automatic collection system for rock cuttings images and an image collection method thereof, thereby overcoming one or more problems caused by limitations and defects of related technologies at least to a certain extent.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An online automatic collection system for rock cuttings images comprises an explosion-proof box, a host computer, an image collection device, a master control system, and a focusing mechanism, a cleaning mechanism, a white light lamp and a fluorescent lamp assembly electrically connected to the master control system, the host computer is connected to the master control system, and the image collection device is connected to the host computer through wireless and wired communication; wherein,

[0008] The top of the explosion-proof box is connected to the mounting plate through the shock-absorbing legs on the four corners, and a glass window is arranged on the bottom plate thereof. A light-shielding cylinder is arranged at the bottom of the explosion-proof box to enclose a dark light area directly below the explosion-proof box;

[0009] The image acquisition device and the focusing mechanism are both arranged in an explosion-proof box. The image acquisition device is driven by the focusing mechanism to lift and focus, and its acquisition lens is facing the middle of the glass window.

[0010] Both the white light and fluorescent light components are located in the explosion-proof box, and the light from both provides light to the dark area through the glass window;

[0011] The cleaning mechanism is used to clean the glass window. The cleaning mechanism includes an inner wiping rod, an outer wiping rod and a driving mechanism. The driving mechanism and the inner wiping rod are both located in an explosion-proof box. The driving mechanism drives the inner wiping rod to swing and clean the inner surface of the glass window. The pin shaft of the outer wiping rod is installed outside the explosion-proof box. Its rotation center is coaxial with the rotation center of the inner wiping rod. The ends of the outer wiping rod and the inner wiping rod are both fixed with magnetic blocks. The end of the inner wiping rod drives the end of the outer wiping rod to move around its rotation center through magnetic means to clean the outer surface of the glass window.

[0012] Furthermore, the root end of the outer wiping rod can be rotatably set on the riveted outer rotating shaft, the riveted outer rotating shaft is riveted to the bottom plate, the inner wiping rod is set on the inner rotating shaft, and the inner rotating shaft can be rotatably set on the rotating shaft seat.

[0013] Furthermore, the driving mechanism includes a cleaning servo, a crankshaft and a driving connecting rod. The crankshaft, the driving connecting rod and the inner wiping rod form a crank rocker mechanism. The inner wiping rod swings to clean the glass window and drives the outer wiping rod to swing synchronously. The swinging cleaning area of ​​the two is smaller than the glass window, and the two magnetic blocks are always attached to the inner and outer surfaces of the glass window respectively.

[0014] Furthermore, it also includes a wiping detector connected to the master control system. The wiping detector includes an anchoring plate and an anchoring body. The anchoring plate is fixed to the end of the inner wiping rod, and the anchoring body is set at the extreme position of the inner wiping rod.

[0015] Furthermore, white light lamps are arranged in pairs on both sides of the image acquisition device, and their light shines on the sample in the dark light area through both sides of the glass window, and a diffuse reflection film is attached to the light source of the white light lamp.

[0016] Furthermore, the fluorescent assembly includes a fluorescent lamp, an adjustment bracket and a fluorescent bracket. The adjustment bracket is installed in an explosion-proof box and is provided with angle adjustment ears. The fluorescent lamp is installed on the fluorescent bracket and is tilted beside the image acquisition device. The fluorescent bracket is supported and the tilt angle is adjusted by the angle adjustment ears.

[0017] Furthermore, the fluorescent assembly also includes a shading hood, which is arranged at the bottom of the fluorescent lamp and is used to block the fluorescent light beam directly irradiated on the glass window and the lens of the image acquisition device. The shading hood is connected to the fluorescent bracket and can be rotated to adjust the blocking angle.

[0018] An image acquisition method for an online automatic collection system of rock cuttings images comprises the following steps:

[0019] S1. Start the collection system. The host computer sends a collection start instruction to the master control system. The master control system transports the rock cuttings samples that have been cleaned in the previous sequence to the dark light area directly below the explosion-proof box to confirm that the rock cuttings samples are in place.

[0020] S2, the master control system starts the cleaning mechanism to clean the inside and outside of the glass window. The wiping detector detects whether the cleaning mechanism is wiping and sends a signal to the master control system after wiping is in place, stopping the cleaning action;

[0021] S3, automatic focusing, the master control system starts the white light lamp, the upper computer sends a signal to the master control system according to the image information collected by the image acquisition device, starts the focusing mechanism to adjust the position of the image acquisition device up and down until the white light image with the best clarity is focused, shoots and sends the white light image information to the upper computer for storage, and turns off the white light lamp;

[0022] S4. Maintain the focus position, turn off the white light, turn on the fluorescent light, capture the fluorescent image and send the fluorescent image information to the host computer for storage.

[0023] Furthermore, if there is a reflected light spot in the fluorescent image, the inclination angle of the fluorescent lamp is adjusted and the shading angle of the light shield is adjusted to prevent the fluorescent light beam from directly hitting the glass window and the lens of the image acquisition device.

[0024] Compared with the prior art, the online automatic collection system and image collection method of rock cuttings images of the present invention have the following beneficial effects:

[0025] 1. The acquisition system places all relevant components for acquisition in an explosion-proof box to isolate the influence of the harsh external environment, increase the service life of the system, and better meet the explosion-proof requirements on site. A cleaning mechanism is set to clean the glass window online to ensure the effectiveness of image acquisition, and can automatically adjust the focus to provide image clarity that meets the detection accuracy requirements, realize the online automatic image acquisition operation of "drilling and acquisition" of rock cuttings samples, and provide detection conditions that meet the detection environment requirements, which is conducive to quickly understanding the lithology at the logging site and improving the logging efficiency. The cleaning mechanism cancels the linkage shaft design. Since the linkage shaft installation requires a movable gap, the explosion-proof performance of the bottom plate will be weakened. The use of magnetic force to drive the rotation of the external wiping rod is conducive to ensuring the explosion-proof performance of the explosion-proof box.

[0026] 2. The image acquisition method provides an automated control method for the image acquisition operation process, ensuring the continuity and higher degree of automation of rock cuttings image acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Disclosed is a three-dimensional structural diagram of the image online acquisition system of the present invention;

[0028] Figure 2 A bottom view of the online image acquisition system of the present invention is disclosed;

[0029] Figure 3 The internal stereoscopic structure diagram of the online image acquisition system of the present invention is disclosed;

[0030] Figure 4 for Figure 3 The assembly structure diagram of the cleaning mechanism;

[0031] Figure 5 for Figure 3 Installation structure diagram of fluorescent lamp.

[0032] In the figure: 1. Mounting plate; 2. Shock-absorbing legs; 3. Explosion-proof box; 31. Opening and closing door panel; 32. Glass window; 33. Glass pressure plate; 4. Shading tube; 5. Image acquisition device; 51. Mounting bracket; 6. Cleaning mechanism; 61. Cleaning servo; 62. Driving connecting rod; 63. Inner wiping rod; 64. Magnetic block; 65. Outer wiping rod; 66. Riveted outer shaft; 67. Shaft seat; 68. Inner shaft; 69. Protective pressure plate; 7. Focusing mechanism; 71. Lifting motor; 72. Driving screw; 8. Wiping detector; 81. Anchoring sheet; 82. Anchoring body; 9. Fluorescent lamp assembly; 91. Adjusting bracket; 92. Fluorescent bracket; 93. Shading hood; 10. White light lamp; 11. Wiring terminal; 12. External interface board. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only the best embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present embodiment provides an online automatic collection system for rock cuttings images, which is used for online collection of rock cuttings images at the logging site. The terminal of the collection system is set at the logging site. The logging site environment is complex, and its host computer is set in a safe house on site or far away from the site. The explosion-proof box 3 is connected to the external master control system through an aviation cable. The master control system, as a part of the upstream master control system, is connected to the host computer through RS485. The master control system controls the light source, the lifting motor 71, the cleaning steering gear 61 and the image acquisition device 5 through relays. The light source, the lifting motor 71, and the cleaning steering gear 61 are connected to the +24V voltage through relay control. The image acquisition device 5 is connected to the +12V voltage through relay control. The image acquisition device 5 communicates with the host computer in both wireless and wired ways. It includes an explosion-proof box 3, a host computer, an image acquisition device 5, a master control system, and a focusing mechanism 7, a cleaning mechanism 6, a white light lamp 10 and a fluorescent lamp assembly 9 that are electrically connected to the master control system respectively; Figure 1-Figure 5 As shown,

[0035] The explosion-proof box 3 is used to protect the terminal of the acquisition system. It is installed on the logging equipment through the mounting plate 1 on the top. The mounting plate 1 is supported and connected to the explosion-proof box 3 by shock-absorbing legs 2 arranged at the four corners. The shock-absorbing legs 2 are connected in series with shock-absorbing foot rings and damping shock absorbers in sequence. The explosion-proof box 3 is formed by stamping steel plates. A retractable door 31 is arranged on its side. A viewing window is opened on its bottom plate. Glass viewing windows 32 are installed through glass pressing plates 33 at both ends. A sealing gasket is arranged between the glass pressing plate 33 and the viewing window for sealing and buffering. In order to reduce the influence of external light, the bottom of the explosion-proof box 3 is extended downward along the surrounding side box plates to form a light-shielding tube 4, so as to enclose a dark light area directly below the explosion-proof box 3 that is conducive to image acquisition.

[0036] The image acquisition device 5, the focusing mechanism 7, the main body of the cleaning mechanism 6, the white light lamp 10, the fluorescent lamp assembly 9 and the connection terminal 11 are all arranged in the explosion-proof box 3. The lens of the image acquisition device 5 is located above the middle of the glass window 32. The external interface board 12 is formed by the concave side plate of the explosion-proof box 3, and is provided with a communication interface and a power interface, etc.;

[0037] The image acquisition device 5 is installed on a mounting bracket 51 of a U-shaped structure. The mounting bracket 51 is connected to a focusing mechanism 7. The focusing mechanism 7 includes a lifting motor 71, a driving gear toothed belt, and a driving screw 72. The driving screw 72 is passed through and threadedly connected to the bottom plate of the mounting bracket 51. A guide rail for guiding the bottom plate of the bracket to lift vertically is also provided in the explosion-proof box 3. The lifting motor 71 softly drives the image acquisition device 5 to lift and focus vertically through the driving gear toothed belt.

[0038] The white light lamp 10 and the fluorescent lamp assembly 9 are both located in the explosion-proof box 3. Figure 3The white light lamp 10 irradiates light for collecting lithology images. In order to effectively suppress the water marks formed between the rock cuttings particles and improve the white light wet illumination effect of the rock cuttings, the light source of the white light lamp 10 is attached with a fixed diffuse reflection film. The white light lamp 10 is arranged in pairs on both sides of the image collection device 5. The light is diffusely reflected and then transmitted through the glass window 32 to illuminate the sample in the dark light area.

[0039] The fluorescent lamp assembly 9 is used to provide light for collecting images of oil content identification of rock cuttings. Due to its high light intensity, it cannot be directly irradiated on the rock cuttings sample. The fluorescent lamp is tilted so that its irradiation direction is toward the explosion-proof box 3. In addition, a light shield 93 is set at the bottom of the fluorescent lamp to block it. The reflected light is used to provide shooting light in the dark light area. Figure 5 , the fluorescent lamp is mounted on a fluorescent bracket 92, an adjustment bracket 91 is fixedly arranged in the explosion-proof box 3, the adjustment bracket 91 has two angle adjustment ears, the fluorescent bracket 92 is mounted on the angle adjustment ears, and an arc waist hole is opened on the angle adjustment ears for rotating and adjusting the inclination angle of the fluorescent bracket 92; due to the limited space in the explosion-proof box 3 and the limited inclination adjustment range, a light shielding cover 93 is provided for auxiliary shielding, the light shielding cover 93 is connected to the lower end of the fluorescent bracket 92 through the connecting ears, and the light shielding angle of the light shielding cover 93 can be rotated to adjust and fix, and it is used to block the fluorescent light beam directly irradiated on the glass window 32 and the lens of the image acquisition device 5;

[0040] Dust and rock cuttings at the logging site are easily attached to the glass window 32 during the cleaning process, which seriously affects the effect of online image acquisition. A cleaning mechanism 6 is provided on the explosion-proof box 3 to clean the glass before each image acquisition. Figure 4 As shown, the cleaning mechanism 6 includes an inner wiping rod 63, an outer wiping rod 65 and a driving mechanism. The driving mechanism and the inner wiping rod 63 are both located in the explosion-proof box 3. The driving mechanism drives the inner wiping rod 63 to swing and clean the inner surface of the glass window 32. The outer wiping rod 65 is pin-mounted outside the explosion-proof box 3 to wipe the outer surface of the glass window 32. Since the bottom plate of the explosion-proof box 3 is a key protective surface, its impact resistance is relatively high. The structural design of the fixing and driving of the outer wiping rod 65 requires to ensure the strength of the bottom plate. Therefore, the driving mechanism of the outer wiping rod 65 The pin shaft is fixed at the end and magnetically driven. The pin shaft used to install the root of the outer wiping rod 65 is fixedly connected to the bottom plate. The pin shaft and the bottom plate are interference fit to ensure the overall structural strength of the bottom plate. The rotation center of the root of the outer wiping rod 65 is coaxial with the rotation center of the inner wiping rod 63. The ends of the outer wiping rod 65 and the inner wiping rod 63 are both fixed with magnetic blocks 64. The magnetic blocks 64 are magnetically attached to the glass surface through the glass. The end of the inner wiping rod 63 drives the end of the outer wiping rod 65 to move around its rotation center through magnetic drive.

[0041] In addition, considering the convenience of independent disassembly and assembly of the inner wiping rod 63 and the outer wiping rod 65 and replacement of the wiping strip, the inner wiping rod 63 and the outer wiping rod 65 adopt a concentric and non-coaxial structural design. Figure 4 The pin at the root end of the outer wiping rod 65 is a riveted outer shaft 66, which is fixed to the bottom plate by riveting. The outer wiping rod 65 is rotatably connected to the riveted outer shaft 66. The inner wiping rod 63 is arranged on the inner shaft 68, and the inner shaft 68 is rotatably arranged on the shaft seat 67. After the wiping strip is buckled on the outer wiping rod 65, it is further pressed and protected by the protective pressure plate 69 to prevent the wiping strip from loosening.

[0042] Considering the limitation of the activity range of the magnet, the driving mechanism adopts a swing mechanism design, which includes a cleaning servo 61, a crankshaft and a driving connecting rod 62. The cleaning servo 61 drives the crankshaft to rotate 360°. The driving connecting rod 62 is connected to the middle of the inner wiping rod 63. The crankshaft, the driving connecting rod 62 and the inner wiping rod 63 form a crank rocker mechanism. The inner wiping rod 63 swings to clean the glass window 32 and drives the outer wiping rod 65 to swing synchronously and in the same amount. The swing cleaning area of ​​the inner wiping rod 63 should cover the sample shooting area and be smaller than the glass window 32.

[0043] The cleaning operation of the cleaning mechanism 6 is an indispensable and necessary action before image acquisition. The acquisition system detects the action and returns to its original position through the wiping detector 8. The wiping detector 8 is connected to the master control system and includes an anchoring plate 81 and an anchoring body 82. After each wiping is completed, the anchoring plate 81 is fixed to the end of the inner wiping rod 63, and the anchoring body 82 is set at the extreme position on either side of the inner wiping rod 63, that is, the dead point position of the crank rocker mechanism. When the cleaning action is completed, the anchoring plate 81 should stop in the anchoring body 82. The cleaning mechanism 6 is turned on, and the anchoring plate 81 leaves and returns to the anchoring body 82. This is a cleaning action. The arrival signal is fed back to the master control system, and the cleaning is stopped and the image acquisition device 5 is started for image acquisition.

[0044] The online automatic acquisition system is a process in the online detection of rock cuttings. Its image acquisition method includes the following steps:

[0045] S1. Start the host computer to activate the collection system. The host computer sends a start collection command to the master control system. The upstream master control system starts the upstream rock cutting sample preparation process. The rock cutting samples that have been cleaned in the upstream process are transported by the manipulator to the dark light area directly below the explosion-proof box 3 to confirm that the rock cutting samples are in place.

[0046] S2, the master control system starts the cleaning mechanism 6 to clean the inner and outer surfaces of the glass window 32. The wiping detector 8 detects whether the cleaning mechanism 6 is wiping, and sends a signal to the master control system after wiping is in place, stopping the cleaning action;

[0047] S3, automatic focusing, the master control system starts the white light lamp 10, the host computer calls the built-in automatic focusing program to evaluate the clarity of the collected image, and sends a corresponding focusing signal to the master control system according to the evaluation result, starts the focusing mechanism 7 to move with a predetermined step length, locks the white light image with the best clarity and its focusing coordinates according to the comparison and analysis of the images collected on the moving path, the host computer records and saves the white light image information with the best clarity, and turns off the white light lamp 10;

[0048] S4. The image acquisition device 5 remains at the focus coordinate in step S3, turns off the white light lamp 10, turns on the fluorescent lamp, captures the fluorescent image and sends the fluorescent image information to the host computer for storage.

[0049] Image acquisition also includes debugging operations: visually tilt the fluorescent lamp and adjust the shading range of the light shielding hood 93, perform actual shooting to confirm, and after completing the focusing according to steps S1 to S3, capture the fluorescent image with the focusing coordinates, and judge the fluorescent image. If there is still a reflected light spot in the fluorescent image, analyze the position of the light spot, and fine-tune the tilt angle of the fluorescent lamp and the shading angle of the light shielding hood 93 until there is no reflected light spot caused by direct illumination of the light source in the fluorescent image.

[0050] The directional words such as "inside", "outside", "upper", "lower", "side", and "end" mentioned in this article are based on Figure 1-Figure 5 The coordinates or orientations shown in . These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;

[0051] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the terms "on" and "inside" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online automatic collection system for rock cuttings images, characterized in that: It includes an explosion-proof box, a host computer, an image acquisition device, a master control system, and a focusing mechanism, a cleaning mechanism, a white light lamp, and a fluorescent lamp assembly electrically connected to the master control system, the host computer is connected to the master control system, and the image acquisition device is connected to the host computer through wireless and wired communication; wherein, The top of the explosion-proof box is connected to the mounting plate through the shock-absorbing legs on the four corners, and a glass window is arranged on the bottom plate thereof. A light-shielding cylinder is arranged at the bottom of the explosion-proof box to enclose a dark light area directly below the explosion-proof box; The image acquisition device and the focusing mechanism are both arranged in the explosion-proof box, and the image acquisition device is driven by the focusing mechanism to lift and focus, and its acquisition lens is directly facing the middle of the glass window; The white light lamp and the fluorescent lamp assembly are both located in the explosion-proof box, and the light from the two lamps provides light to the dark light area through the glass window; The cleaning mechanism is used to clean the glass window, and the cleaning mechanism includes an inner wiping rod, an outer wiping rod and a driving mechanism. The driving mechanism and the inner wiping rod are both located in the explosion-proof box. The driving mechanism drives the inner wiping rod to swing and clean the inner surface of the glass window. The pin shaft of the outer wiping rod is installed outside the explosion-proof box, and its rotation center is coaxial with the rotation center of the inner wiping rod. The ends of the outer wiping rod and the inner wiping rod are both fixed with magnetic blocks. The end of the inner wiping rod drives the end of the outer wiping rod to move around its rotation center through magnetism to clean the outer surface of the glass window.

2. The online automatic collection system for rock cuttings images according to claim 1 is characterized in that: The root end of the outer wiping rod can be rotatably arranged on the riveted outer rotating shaft, the riveted outer rotating shaft is riveted to the bottom plate, the inner wiping rod is arranged on the inner rotating shaft, and the inner rotating shaft can be rotatably arranged on the rotating shaft seat.

3. The online automatic collection system for rock cuttings images according to claim 2 is characterized in that: The driving mechanism includes a cleaning servo, a crankshaft and a driving connecting rod. The crankshaft, the driving connecting rod and the inner wiping rod form a crank rocker mechanism. The inner wiping rod swings to clean the glass window and drives the outer wiping rod to swing synchronously. The swinging cleaning areas of the two are smaller than the glass window. The two magnetic blocks are always attached to the inner and outer surfaces of the glass window respectively.

4. The online automatic collection system for rock cuttings images according to claim 3 is characterized by: It also includes a wiping detector connected to the master control system. The wiping detector includes an anchoring plate and an anchoring body. The anchoring plate is fixed to the end of the inner wiping rod, and the anchoring body is set at the extreme position of the inner wiping rod.

5. The online automatic collection system for rock cuttings images according to claim 1 is characterized by: The white light lamps are arranged in pairs on both sides of the image acquisition device, and the light thereof is irradiated onto the sample in the dark light area through both sides of the glass window. A diffuse reflection film is attached to the light source of the white light lamp.

6. The online automatic collection system for rock cuttings images according to claim 1 is characterized by: The fluorescent assembly includes a fluorescent lamp, an adjustment bracket and a fluorescent bracket. The adjustment bracket is installed in the explosion-proof box and is provided with an angle adjustment ear. The fluorescent lamp is installed on the fluorescent bracket and is tilted beside the image acquisition device. The fluorescent bracket is supported and the tilt angle is adjusted by the angle adjustment ear.

7. The online automatic collection system for rock cuttings images according to claim 6 is characterized by: The fluorescent component also includes a shading cover, which is arranged at the lower part of the fluorescent lamp and is used to block the fluorescent light beam directly irradiated on the glass window and the lens of the image acquisition device. The shading cover is connected to the fluorescent bracket and can be rotated to adjust the blocking angle.

8. An image acquisition method for an online automatic collection system of rock cuttings images, characterized in that: The following steps are involved: S1. Start the collection system. The host computer sends a collection start instruction to the master control system. The master control system transports the rock cuttings samples that have been cleaned in the previous sequence to the dark light area directly below the explosion-proof box to confirm that the rock cuttings samples are in place. S2, the master control system starts the cleaning mechanism to clean the inside and outside of the glass window. The wiping detector detects whether the cleaning mechanism is wiping and sends a signal to the master control system after wiping is in place, stopping the cleaning action; S3, automatic focusing, the master control system starts the white light lamp, the upper computer sends a signal to the master control system according to the image information collected by the image acquisition device, starts the focusing mechanism to adjust the position of the image acquisition device up and down until the white light image with the best clarity is focused, shoots and sends the white light image information to the upper computer for storage, and turns off the white light lamp; S4. Maintain the focus position, turn off the white light, turn on the fluorescent light, capture the fluorescent image and send the fluorescent image information to the host computer for storage.

9. The image acquisition method of the online automatic rock cuttings image acquisition system according to claim 8, characterized in that: If there are reflected light spots in the fluorescent image, adjust the inclination angle of the fluorescent lamp and the shading angle of the light shield to prevent the fluorescent light beam from directly hitting the glass window and the lens of the image acquisition device.

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