A photovoltaic pile foundation positioning and marking device
By using a drone to carry a photovoltaic pile foundation positioning device with marking and detection components, the problems of large positioning errors, low efficiency, and high labor costs of photovoltaic pile foundations have been solved, achieving efficient and accurate positioning of photovoltaic pile foundations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-16
- Publication Date
- 2026-04-07
AI Technical Summary
Existing photovoltaic pile foundation positioning methods suffer from problems such as large errors, low efficiency, high labor costs, discontinuous positioning, and high personnel requirements.
A drone carrying a marking component is used for the positioning of photovoltaic pile foundations. A drive component and a detection component are used to ensure the accuracy and continuity of the positioning. The center point and ring mark are sprayed by a nozzle to improve the positioning efficiency, and the detection component detects the marking effect.
This improved the accuracy and efficiency of photovoltaic pile foundation positioning, reduced labor costs, and achieved automation and continuity in photovoltaic pile foundation positioning.
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Figure CN117328457B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of photovoltaic pile foundation construction, and particularly relates to a photovoltaic pile foundation positioning marking device. BACKGROUND
[0002] Photovoltaic power generation is a process of converting light energy into electric energy by using sunlight and special materials such as crystalline silicon panels and inverters. The photovoltaic pile foundation is an important part of supporting the photovoltaic module. Therefore, the construction quality of the photovoltaic pile foundation directly affects the installation quality of the photovoltaic module, and further affects the power generation efficiency of the photovoltaic module. In the related art, the positioning of the photovoltaic pile foundation is usually performed by manually pulling a rope, measuring a distance, and inserting a marker. However, the following problems exist.
[0003] (1) The manual positioning has errors, and the errors increase with the increase of the number of pile foundation points.
[0004] (2) The positioning efficiency is low. The number of photovoltaic pile foundations is large, and the positioning of the pile foundation is greatly affected by the physical condition of the personnel, weather conditions, terrain conditions, site leveling conditions, and the like. Therefore, the positioning efficiency is unstable or low.
[0005] (3) The positioning operation is discontinuous. In order to ensure the accuracy of the pile foundation positioning and the safety of the positioning personnel, the manual positioning is usually performed during the day.
[0006] (4) A large number of personnel are required for the positioning. The positioning of the photovoltaic pile foundation usually requires a group of 2-3 persons to cooperate. When the photovoltaic capacity is large and the positioning time is limited, a large number of positioning work groups need to be configured, and a large number of personnel are required. SUMMARY
[0007] The present application aims to at least partially solve one of the technical problems in the related art.
[0008] To this end, an embodiment of the present application provides a photovoltaic pile foundation positioning marking device, which improves the quality and efficiency of the positioning of the photovoltaic pile foundation, ensures the accuracy and continuity of the positioning of the photovoltaic pile foundation, and reduces the number of personnel and the labor cost.
[0009] The photovoltaic pile positioning marking device comprises a driving assembly, a marking assembly and a detection assembly, the marking assembly is arranged on the driving assembly, the driving assembly is used for driving the marking assembly to move, the marking assembly comprises a support frame, a pigment container, a discharge pipe and a spray head, the support frame is detachably connected with the driving assembly, the pigment container is arranged on the support frame, one end of the discharge pipe is connected with the pigment container, the other end of the discharge pipe is connected with the spray head, the pigment in the pigment container is sprayed out through the discharge pipe and the spray head, the spray head has a center nozzle at the center of the spray head and an annular nozzle surrounding the center nozzle, and the detection assembly is arranged on the marking assembly and used for detecting the effect of the spray head spraying the pigment.
[0010] The photovoltaic pile positioning marking device utilizes the driving assembly to carry the marking assembly to perform the positioning marking operation of the photovoltaic pile, avoids the problems of large error, low efficiency and high labor cost of the manual rope pulling, distance measuring and mark inserting positioning methods in the related art, and detects the completed positioning marking operation through the detection assembly to ensure the effectiveness of the positioning marking operation.
[0011] In some embodiments, the spray head comprises a barrel and a filler arranged in the barrel, an inner wall of the barrel and a peripheral wall of the filler define an annular channel, an inlet of the annular channel is in communication with an outlet of the discharge pipe, an outlet of the annular channel is the annular nozzle, the filler is provided with a center channel, an inlet of the center channel is in communication with the outlet of the discharge pipe, and an outlet of the center channel is the center nozzle.
[0012] In some embodiments, one end of the filler close to the outlet of the discharge pipe is provided with an annular frustum, at least part of the annular frustum penetrates the outlet of the discharge pipe to divide the outlet of the discharge pipe into a first port and a second port surrounding the first port, a center through hole of the annular frustum is a first flow channel so that the first port is in communication with the center channel through the first flow channel, and an outer wall of the annular frustum and the inner wall of the barrel define an annular second flow channel so that the second port is in communication with the annular channel through the second flow channel.
[0013] In some embodiments, the center axes of the first port, the second port, the first flow channel and the second flow channel are coaxially arranged.
[0014] In some embodiments, the cross-sectional area of the first port is smaller than that of the second port.
[0015] In some embodiments, the cross-sectional area of the first flow channel gradually decreases from upstream to downstream in the direction of the pigment flow, and the cross-sectional area of the second flow channel gradually increases from upstream to downstream in the direction of the pigment flow.
[0016] In some embodiments, the discharge pipe is provided with a first electromagnetic valve and a second electromagnetic valve, the volume of the discharge pipe between the first electromagnetic valve and the second electromagnetic valve is L1, the sum of the volume of the central channel and the volume of the annular channel is L2, and the following relationship is satisfied: L1=L2.
[0017] In some embodiments, the pigment container comprises a cylindrical section and a conical section connected in series, the cylindrical section is provided with a pigment injection port, and the bottom of the conical section is provided with a discharge port in communication with the inlet of the discharge pipe.
[0018] In some embodiments, the support frame comprises a hanging plate and a plurality of hangers connected to the hanging plate, and the outer wall of the cylindrical section is provided with a plurality of lugs corresponding to and connected to the plurality of hangers.
[0019] In some embodiments, the detection assembly comprises an image recorder and an illumination lamp arranged below the pigment container, the image recorder is used to record and detect the pigment sprayed by the spray head, and the illumination lamp is used to supplement light during recording by the image recorder. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a structural schematic diagram of a photovoltaic pile foundation positioning marker device according to an embodiment of the present application.
[0021] Figure 2 is a structural schematic diagram of a photovoltaic pile foundation positioning marker device according to an embodiment of the present application.
[0022] Figure 3 is Figure 2 is an enlarged schematic diagram of part A in FIG. 6.
[0023] Reference Signs:
[0024] support frame 1, hanging plate 11, hanger 12,
[0025] pigment container 2, cylindrical section 21, pigment injection port 211, conical section 22, lug 23, balance weight 24, electronic signal instrument 25,
[0026] discharge pipe 3, first electromagnetic valve 31, second electromagnetic valve 32, first port 301, second port 302,
[0027] spray head 4, barrel 41, filler 42, annular truncated cone 43, annular channel 401, central channel 402, first flow channel 403, second flow channel 404,
[0028] 5. Image recorder; 6. Illumination lamp. Detailed Implementation
[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0030] The photovoltaic pile foundation positioning and marking device of the present invention is described below with reference to the accompanying drawings.
[0031] like Figures 1 to 3 As shown, the photovoltaic pile foundation positioning and marking device of this embodiment includes: a driving component (not shown in the figure), a marking component, and a detection component.
[0032] The driving components include a drone and a remote controller. The marking component is mounted on the drone. Workers input the coordinates of multiple photovoltaic piles into the remote controller, which then controls the drone's flight, moving the marking component. Once the marking component reaches the preset photovoltaic pile location, it performs a visual positioning and marking operation on the ground. A detection component is mounted on the marking component. After the marking component completes one positioning and marking operation, the detection component checks the effectiveness of the completed positioning and marking operation. If the inspection is successful, the drone carries the marking component to the next location to be marked.
[0033] Understandably, using drones to carry marking components for the positioning and marking of photovoltaic pile foundations avoids the problems of large errors, inefficiency, and high labor costs associated with manual methods such as pulling ropes, measuring distances, and inserting markers in related technologies. The effectiveness of the positioning and marking work is ensured by using detection components to inspect the completed positioning and marking work.
[0034] Optionally, such as Figure 1 As shown, the marking assembly includes a support frame 1, a pigment container 2, a discharge pipe 3, and a nozzle 4. The support frame 1 is detachably connected to the drone, for example, by bolts or clips. The pigment container 2 is mounted on the support frame 1. One end of the discharge pipe 3 is connected to the pigment container 2, and the other end is connected to the nozzle 4, so that the pigment stored in the pigment container 2 is transported into the discharge pipe 3 and then sprayed out through the nozzle 4, thereby completing the positioning and marking operation.
[0035] The detection component is used to detect the effect of the ink sprayed by the nozzle 4. For example, the detection component detects the depth of the marking color. If the marking color is too light, that is, the visibility is low, the ink is sprayed again by the nozzle 4 to enhance the marking effect.
[0036] Furthermore, the nozzle 4 has a central nozzle located at its center and an annular nozzle surrounding the central nozzle, thereby marking circles with a center point on the ground. The circular markings sprayed by the annular nozzles are used to determine the range of subsequent drilled pile foundation holes, while the center point markings sprayed by the central nozzles are used to determine the center of the subsequent drilled pile foundation holes, thus improving the convenience of subsequent drilling. Moreover, compared to spraying pigment in a complete circle, spraying pigment in a circle with a center point requires less pigment, thereby reducing the liquid storage capacity of the pigment container 2 and consequently reducing the payload of the drone.
[0037] In some embodiments, such as Figures 1 to 3 As shown, the nozzle 4 includes a cylindrical body 41 and a filler 42 disposed within the cylindrical body 41. The filler 42 is cylindrical, and the central axis of the cylindrical body 41 and the central axis of the filler 42 are coaxially arranged. The inner wall of the cylindrical body 41 is spaced apart from the peripheral wall of the filler 42, so that the inner wall of the cylindrical body 41 and the peripheral wall of the filler 42 define an annular channel 401. The inlet of the annular channel 401 is connected to the outlet of the discharge pipe 3, and the outlet of the annular channel 401 is an annular nozzle. The filler 42 is provided with a central channel 402, the inlet of which is connected to the outlet of the discharge pipe 3, and the outlet of the central channel 402 is a central nozzle.
[0038] Understandably, the pigment in pigment container 2 is transported to nozzle 4 through discharge pipe 3, and the pigment in discharge pipe 3 enters the central channel 402 and the annular channel 401 respectively, thereby spraying out a circular mark with a center point.
[0039] Optionally, a plurality of connecting posts (not shown in the figure) are provided between the inner wall of the cylinder 41 and the outer peripheral wall of the filler 42. One end of the connecting post is fixedly connected to the inner wall of the cylinder 41 (by welding, etc.), and the other end of the connecting post is fixedly connected to the outer peripheral wall of the filler 42.
[0040] Specifically, such as Figures 1 to 3 As shown, the pigment container 2, the discharge pipe 3, and the nozzle 4 are arranged sequentially from top to bottom. The cylinder 41 and the filler 42 are both arranged in the vertical direction. The central axis of the cylinder 41 is coaxial with the central axis of the discharge pipe 3. The upper end of the central channel 402 is flush with the upper end of the annular channel 401, and the lower end of the central channel 402 is flush with the lower end of the annular channel 401.
[0041] In some embodiments, such as Figures 1 to 3As shown, the filler 42 has an annular cone 43 at one end near the outlet of the discharge pipe 3 (i.e., the upper end of the filler 42). The discharge pipe 3 has an inlet at its upper end and an outlet at its lower end. At least a portion of the annular cone 43 extends through the outlet of the discharge pipe 3, dividing the outlet of the discharge pipe 3 into a first opening 301 and a second opening 302 surrounding the first opening 301. The central through-hole of the annular cone 43 is a first flow channel 403, so that the first opening 301 communicates with the central channel 402 through the first flow channel 403. The outer wall of the annular cone 43 and the inner wall of the cylinder 41 define an annular second flow channel 404, so that the second opening 302 communicates with the annular channel 401 through the second flow channel 404. Furthermore, the central axes of the first opening 301, the second opening 302, the first flow channel 403, and the second flow channel 404 are all coaxially arranged.
[0042] In other words, the pigment flowing out of the outlet of the discharge pipe 3 is divided into two streams by the annular cone 43. One stream flows into the central channel 402 through the first flow channel 403, and the other stream flows into the annular channel 401 through the second flow channel 404.
[0043] In some embodiments, such as Figures 1 to 3 As shown, the cross-sectional area of the first port 301 is smaller than the cross-sectional area of the second port 302.
[0044] Understandably, because the amount of pigment required at the center point is less than that required at the outer ring in actual working conditions, the amount of pigment flowing from the outlet of the discharge pipe 3 into the annular channel 401 is greater than the amount flowing into the central channel 402, thus ensuring the feasibility of the positioning and marking operation.
[0045] Furthermore, such as Figures 1 to 3 As shown, the cross-sectional area of the first flow channel 403 gradually decreases from upstream to downstream in the direction of pigment flow, meaning the flow area of the first flow channel 403 gradually decreases. The cross-sectional area of the second flow channel 404 gradually increases from upstream to downstream in the direction of pigment flow, meaning the flow area of the second flow channel 404 gradually increases.
[0046] In some embodiments, such as Figures 1 to 3 As shown, the discharge pipe 3 is equipped with a first solenoid valve 31 and a second solenoid valve 32. The first solenoid valve 31 is located above the second solenoid valve 32, and the first solenoid valve 31 and the second solenoid valve 32 are used to control the opening and closing of the discharge pipe 3.
[0047] Understandably, before the positioning and marking operation, the first solenoid valve 31 opens, allowing the pigment in the pigment container 2 to flow into the discharge pipe 3. Then, the first solenoid valve 31 closes, leaving the portion of the discharge pipe 3 between the first solenoid valve 31 and the second solenoid valve 32 containing pigment. When the positioning and marking operation is performed, the second solenoid valve 32 opens, allowing the pigment stored in the discharge pipe 3 to flow into the nozzle 4 for spraying and marking.
[0048] In other words, before each positioning and marking operation, pigment needs to be stored in the discharge pipe 3. Then, during the positioning and marking operation, the stored quantitative amount of pigment is used for marking, so that each positioning pile foundation mark uses a quantitative amount of pigment, thereby improving the consistency of photovoltaic pile foundation positioning marks.
[0049] Optionally, the volume of the discharge pipe 3 located between the first solenoid valve 31 and the second solenoid valve 32 is L1, and the sum of the volume of the central channel 402 and the volume of the annular channel 401 is L2, and satisfies the relationship: L1=L2.
[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the pigment container 2 includes a cylindrical section 21 and a conical section 22 connected together. The cylindrical section 21 is provided with a filling port 211, and the bottom of the conical section 22 has a discharge port that communicates with the inlet of the discharge pipe 3.
[0051] Specifically, such as Figure 1 and Figure 2 As shown, the cylindrical section 21 is located above the conical section 22. The cross-sectional area of the conical section 22 gradually decreases from top to bottom. The injection port 211 is located on the upper surface of the cylindrical section 21, and the discharge port is located at the lower end of the conical section 22, so as to facilitate the injection and discharge of pigment into the pigment container 2.
[0052] Furthermore, such as Figure 1 and Figure 2 As shown, the upper surface of the cylindrical section 21 is also provided with multiple balancing blocks 24 to ensure the levelness and balance of the pigment container 2. In addition, the cylindrical section 21 is also provided with an electronic signal instrument 25 for monitoring the position of the equipment, the level information of the pigment container 2, and the pigment liquid level.
[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the support frame 1 includes a hanging plate 11 and multiple hanging rods 12 connected to the hanging plate 11. The outer wall of the column section 21 is provided with multiple lifting lugs 23 that correspond one-to-one with and are connected to the multiple hanging rods 12.
[0054] Optionally, such as Figure 1 and Figure 2As shown, multiple lifting lugs 23 are axially spaced around the cylindrical segment 21. The hanging plate 11, the lifting rod 12, and the lifting lugs 23 are used to ensure that the pigment container 2 is set horizontally. Furthermore, the hanging plate 11 can be hung on the drone's bracket or connected to the drone's bracket by bolts.
[0055] In some embodiments, such as Figure 1 and Figure 2 As shown, the detection components include an image recorder 5 and an illumination lamp 6 located below the pigment container 2.
[0056] Understandably, after the nozzle 4 sprays the pigment, the image recorder 5 is used to record the positioning spray marks and check the effect. When the light is insufficient, the illumination lamp 6 is used to provide supplementary lighting during the recording process of the image recorder 5.
[0057] In summary, the working logic of the photovoltaic pile foundation positioning and marking device according to the present invention will be described in detail below.
[0058] First, the coordinates of the photovoltaic pile foundation are input into the remote controller (with memory card), and the drone takes off. The drone, carrying the marking component, flies to the predetermined coordinates. Simultaneously, the first solenoid valve 31 opens, stores a measured amount of pigment in the discharge pipe 3, and then closes the first solenoid valve 31. Upon reaching the predetermined coordinates, the drone checks the device's levelness. If the check fails, feedback is sent, prompting manual verification. If the check passes, the second solenoid valve 32 is opened, and the nozzle 4 sprays pigment, with the nozzle 4 at a height of 50-100mm from the ground. Finally, the positioning pigment mark is photographed to verify the spraying effect, and the data is transmitted back to the remote controller for storage. If there are any unclear marks, the first solenoid valve 31 and the second solenoid valve 32 are opened simultaneously to remark the location. After verification, the drone flies to the next pile foundation location for marking.
[0059] The device can perform the above-mentioned workflow automatically or be manually controlled via remote control. The remote control can display the device's real-time working scene, the coordinates of the completed positioning points, and the completion rate. The coordinates of the photovoltaic pile foundations can be entered individually or in batches. Through liquid level monitoring, the drone will automatically return to the feeding point when the pigment is insufficient. When the light is insufficient, the illumination lamp 6 below the pigment container 2 will be turned on.
[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0064] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0065] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.
Claims
1. A photovoltaic pile foundation positioning and marking device, characterized in that, include: Driver components; A marking assembly is provided on the drive assembly, which is used to move the marking assembly. The marking assembly includes a support frame, a pigment container, a discharge pipe, and a nozzle. The support frame is detachably connected to the drive assembly. The pigment container is provided on the support frame. One end of the discharge pipe is connected to the pigment container, and the other end of the discharge pipe is connected to the nozzle. The pigment in the pigment container is discharged through the discharge pipe and the nozzle. The nozzle has a central nozzle located at the center of the nozzle and an annular nozzle surrounding the central nozzle. A detection component is disposed on the marking component, and the detection component is used to detect the effect of the nozzle spraying pigment.
2. The photovoltaic pile foundation positioning and marking device according to claim 1, characterized in that, The nozzle includes a cylinder and a filler disposed within the cylinder. The inner wall of the cylinder and the peripheral wall of the filler define an annular channel. The inlet of the annular channel is connected to the outlet of the discharge pipe, and the outlet of the annular channel is the annular nozzle. The filler is provided with a central channel. The inlet of the central channel is connected to the outlet of the discharge pipe, and the outlet of the central channel is the central nozzle.
3. The photovoltaic pile foundation positioning and marking device according to claim 2, characterized in that, The filler has an annular cone at one end near the outlet of the discharge pipe. At least a portion of the annular cone extends through the outlet of the discharge pipe to divide the outlet of the discharge pipe into a first opening and a second opening surrounding the first opening. The central through hole of the annular cone is a first flow channel so that the first opening communicates with the central channel through the first flow channel. The outer wall of the annular cone and the inner wall of the cylinder define an annular second flow channel so that the second opening communicates with the annular channel through the second flow channel.
4. The photovoltaic pile foundation positioning and marking device according to claim 3, characterized in that, The central axes of the first port, the second port, the first flow channel, and the second flow channel are all coaxially arranged.
5. The photovoltaic pile foundation positioning and marking device according to claim 3, characterized in that, The cross-sectional area of the first port is smaller than that of the second port.
6. The photovoltaic pile foundation positioning and marking device according to claim 3, characterized in that, The cross-sectional area of the first flow channel gradually decreases from upstream to downstream in the direction of pigment flow, while the cross-sectional area of the second flow channel gradually increases from upstream to downstream in the direction of pigment flow.
7. The photovoltaic pile foundation positioning and marking device according to claim 2, characterized in that, The discharge pipe is equipped with a first solenoid valve and a second solenoid valve. The volume of the discharge pipe located between the first solenoid valve and the second solenoid valve is L1. The sum of the volume of the central channel and the volume of the annular channel is L2, and the relationship is satisfied: L1 = L2.
8. The photovoltaic pile foundation positioning and marking device according to claim 1, characterized in that, The pigment container includes a cylindrical section and a conical section connected together. The cylindrical section is provided with a filling port, and the bottom of the conical section has a discharge port that communicates with the inlet of the discharge pipe.
9. The photovoltaic pile foundation positioning and marking device according to claim 8, characterized in that, The support frame includes a hanging plate and multiple hanging rods connected to the hanging plate. The outer wall of the columnar section is provided with multiple lifting lugs that correspond one-to-one with and are connected to the multiple hanging rods.
10. The photovoltaic pile foundation positioning and marking device according to claim 1, characterized in that, The detection component includes an image recorder and an illumination lamp located below the pigment container. The image recorder is used to record and detect the pigment sprayed by the nozzle, and the illumination lamp is used to provide supplemental lighting during the recording process of the image recorder.
Citation Information
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