Portable Handheld Paper Feeding Device and Method for Sampling Pesticide Droplet Image Analysis

Abstract

The present invention discloses a portable handheld paper feeding device and method for pesticide droplet image analysis sampling, including a paper feeding housing and a paper feeding mechanism; an installation opening and a paper outlet are provided inside the paper feeding housing; the paper feeding mechanism includes a paper rack, a lifting drive mechanism, and a paper outlet mechanism; the paper rack is arranged in the moving channel, and a plurality of vertically arranged paper grooves are provided on the paper rack; a paper pressing assembly for pressing the sampling paper against the upper bottom surface of the paper groove is provided in each paper groove; the paper outlet mechanism includes a mounting arm, a paper outlet wheel, and a paper outlet drive mechanism; one end of the mounting arm is rotatably connected, and the other end of the mounting arm extends into the moving channel of the paper rack; the paper outlet wheel is rotatably connected to the other end of the mounting arm; an avoidance hole for avoiding the paper outlet wheel is provided on the lower bottom surface of the paper groove. The present invention can automatically send out the sampling paper, avoid the hand contact of the staff from contaminating the sampling paper, and is beneficial to reducing the error and cost of the test.

Description

Technical Field

[0001] The present invention relates to a fog droplet sampling device and method, and particularly to a portable handheld paper feeding device and method for sampling pesticide fog droplet images. Background Art

[0002] The traditional method of pesticide spraying is mainly manual backpack spraying. However, due to problems such as a small spraying range and limited types of sprayed plants in manual spraying, a large amount of pesticide waste and environmental pollution will occur, greatly reducing the utilization rate of pesticides. In recent years, the precision agricultural aviation system with remote sensing drones and plant protection drones as carriers has gradually developed and matured. Plant protection drones that can carry various aerial nozzles are gradually replacing traditional manual spraying operations, greatly improving the efficiency of agricultural operations.

[0003] In the field of agricultural aviation fog droplet spraying, research on fog droplets such as fog droplet deposition measurement, spray width determination, drift control, and droplet collision behavior is still in its infancy, and a large amount of theoretical analysis and experimental verification work is still needed.

[0004] Among several materials for fog droplet spraying collection, water-sensitive paper, oil-sensitive paper, calomite paper cards, coated paper, filter paper, chromatographic paper, photographic paper, etc. are commonly used. Among them, water-sensitive paper is very sensitive to water and turns blue when encountering water. It is relatively convenient to use and easy to carry, suitable for use in outdoor fields and mountains. However, there are still problems such as inconvenient paper taking and discoloration of water-sensitive paper caused by accidental touch of personnel's hands. Since the material price of water-sensitive paper is relatively expensive, the influence caused by humans will not only produce experimental errors but also cause certain economic losses. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned existing problems and provide a portable handheld paper feeding device for sampling pesticide fog droplet images. This portable automatic paper feeding device can automatically send out sampling paper, avoiding the contamination of the sampling paper by the hands of the staff, which is beneficial to reducing the experimental error and cost.

[0006] Another purpose of the present invention is to provide a portable handheld paper feeding method for sampling pesticide fog droplet images.

[0007] The purpose of the present invention is achieved by the following technical solutions:

[0008] A portable handheld paper feeding device for sampling pesticide fog droplet images, comprising a paper feeding housing and a paper feeding mechanism arranged in the paper feeding housing;

[0009] A moving channel is provided in the paper feeding housing. An installation opening is provided at the top of the moving channel, and a paper outlet is provided on the side of the moving channel;

[0010] The paper feeding mechanism includes a paper rack, a lifting drive mechanism for driving the paper rack to move up and down, and a paper discharging mechanism for sending out the sampling paper on the paper rack; the paper rack is arranged in the moving channel, and a plurality of vertically arranged paper grooves are provided on the paper rack; a paper pressing assembly for pressing the sampling paper against the upper bottom surface of the paper groove is provided in each paper groove;

[0011] The paper discharging mechanism includes a mounting arm, a paper discharging wheel and a paper discharging drive mechanism; one end of the mounting arm is rotatably connected, and the other end of the mounting arm extends into the moving channel of the paper rack; the paper discharging wheel is rotatably connected to the other end of the mounting arm; the driving end of the paper discharging drive mechanism is connected to the paper discharging wheel; an avoidance hole for avoiding the paper discharging wheel is provided on the lower bottom surface of the paper groove; in the working state, the paper discharging wheel presses on the sampling paper in the paper groove and conveys the sampling paper to the paper discharging port;

[0012] The lifting drive mechanism includes a lifting drive motor and a lifting transmission assembly, the lifting transmission assembly includes a gear and a rack, the rack is vertically fixed on the side wall of the paper rack, and the gear is connected to the output shaft of the lifting drive motor.

[0013] The working principle of the above portable hand-held paper feeding device for pesticide droplet image analysis sampling is as follows:

[0014] During operation, select a suitable sampling paper according to the test requirements, and measure the humidity of the experimental environment on site. If the humidity of the site environment is relatively high, it is not convenient to use water-sensitive materials, and other sampling papers such as oil-sensitive paper, calomit paper card, coated paper, filter paper, chromatographic paper, photo paper, etc. can be used.

[0015] In a windless and dry environment, wear gloves and place the sampling paper on the paper pressing assembly, and gently shake it to check whether the sampling paper is fixed; according to the above operation, place the sampling paper layer by layer until all the paper grooves are filled with sampling paper; put the paper rack through the installation port so that the rack on the paper rack meshes with the gear on the lifting drive motor, and start the lifting drive motor for a trial run to check the movement of the paper rack. After everything is normal, reset the paper rack and the sampling paper placement is completed.

[0016] In the initial state, the lowermost paper tray corresponds to the paper outlet of the paper feeding housing, and at this time, the paper feeding wheel presses on the sampling paper in the lowermost paper tray; when paper needs to be fed, the paper feeding wheel is driven to rotate in the corresponding direction through the paper feeding driving mechanism, so as to convey the sampling paper from the paper tray to the paper outlet, and then transfer it from the paper outlet to the designated place to complete the current paper feeding operation. When continuing to feed paper, the paper rack is driven to move downward by the lifting driving motor, so that the upper storage slot descends to a position corresponding to the paper outlet of the paper feeding housing, and then the paper feeding operation is performed to continue feeding paper. According to the above operation, by driving the paper rack to move downward layer by layer through the lifting driving motor, the sampling paper in the paper tray can be automatically sent out one by one, which can avoid the hand contact pollution of the sampling paper by the staff and is beneficial to reducing the test error and cost.

[0017] A preferred embodiment of the present invention, wherein, a vertical guiding structure is provided between the paper rack and the paper feeding housing, and the vertical guiding structure includes a vertical guiding portion and a vertical guiding groove. The vertical guiding portion is arranged on the side surface of the paper rack, and the vertical guiding groove is arranged in the paper feeding housing.

[0018] A preferred embodiment of the present invention, wherein, a moisture-proof door is provided on the installation opening. The moisture-proof door is opened when replacing the multi-layer paper rack and can be closed after replacement to reduce the influence of environmental factors such as humidity on the sampling paper.

[0019] A preferred embodiment of the present invention, wherein, two infrared sensors with different heights are provided in the paper feeding housing; both of the two infrared sensors face the moving channel;

[0020] When both of the two infrared sensors detect the paper rack, it represents that the number of sampling papers is full; when the upper infrared sensor does not detect the paper rack while the lower infrared sensor detects the paper rack, it represents that the sampling paper has been used but there is still some left; when neither of the two infrared sensors detects the paper rack, it represents that there is no remaining sampling paper and replenishment is needed.

[0021] A preferred embodiment of the present invention, wherein, a handle for convenient grasping is provided on the paper feeding housing, and an indicator light and a control button for controlling the paper feeding mechanism are provided on the handle. According to the infrared sensors, the position of the paper rack inside the paper feeding device is judged, and then the remaining amount of the sampling paper is displayed and analyzed. In different situations, the indicator light on the handle will emit different colors of light to indicate the remaining situation of the materials in the current device.

[0022] A preferred embodiment of the present invention, wherein, a plurality of paper racks are provided, and each paper rack is provided with n layers of paper trays, n>5; in the working state, the plurality of paper racks are filled with sampling papers and carried out for experiments outdoors. When needed, the paper racks can be replaced on the spot, so there is no need to return to the indoor to load materials every time after the experiment is completed. Different types of sampling papers required can be manually loaded before inserting into the device, and multiple paper racks can be carried with you for one experiment, which can meet the needs of multiple paper feedings.

[0023] A preferred embodiment of the present invention, wherein the paper pressing assembly includes a paper pressing spring and a pressing plate. The bottom of the paper pressing spring is fixed on the lower bottom surface of the paper tray, and the top of the paper pressing spring is fixedly connected to the pressing plate. Through the above structure, the sampling paper can be fixed in the paper tray to prevent displacement or dropping.

[0024] A preferred embodiment of the present invention, wherein the paper feeding driving mechanism includes a paper feeding driving motor, and the paper feeding driving motor is arranged on the mounting arm and connected to the paper feeding wheel. In this way, the paper feeding wheel can be driven to rotate to transfer the sampling paper in the paper tray to the paper outlet.

[0025] A preferred embodiment of the present invention, further comprising a printing mechanism, which includes a printing base, a return spring, a printing handle and a seal; the printing base is arranged outside the paper outlet, and the printing base includes a lower base and an upper base, and a printing channel is provided between the lower base and the upper base; the printing channel is communicated with the paper outlet; the return spring, the printing handle and the seal are arranged on the upper base, the upper base is provided with a printing hole, the return spring is supported between the printing handle and the upper base, and the printing handle is fixedly connected to the seal;

[0026] In the working state, the seal passes through the printing hole and approaches the lower printing channel. Through the above structure, when the sampling paper is sent out from the paper outlet and transferred to the printing channel, by pressing the printing handle, test-related information can be printed on the sampling paper, and the information can be changed according to needs. Each time a droplet collection material is sent out, its number will increase or decrease according to the setting, ensuring the continuity and logic of all sampling papers, and also greatly shortening the later storage and processing process.

[0027] A portable handheld paper feeding method for pesticide droplet image analysis sampling, comprising the following steps:

[0028] Select the sampling paper according to the test requirements; measure the humidity of the experimental environment on-site and select the corresponding sampling paper according to the humidity of the environment;

[0029] Select the content printed by the printing mechanism according to the test requirements, and reset the printing mechanism. If printing is not required, the printing components can be disassembled; before printing, the printing ink required for printing the required color needs to be replenished for the seal; at the same time, it is necessary to check whether the battery of the device is installed properly and whether the battery is powered; in a windless and dry environment, wear gloves and layer by layer place the sampling paper on the paper pressing assembly until all the paper trays are filled with sampling paper; after the placement is completed, if a large number of sampling papers are required, the number of paper racks can be increased for replacement;

[0030] Put the paper rack into the moving channel through the installation opening, engage the rack on the paper rack with the gear on the lifting drive motor, and start the lifting drive motor for a trial run to check the movement of the paper rack; after normal operation, reset the paper rack;

[0031] Check the color of the indicator light. If the number of sampling papers is full, it is green; in the initial state, the lowermost paper slot corresponds to the paper outlet of the paper feeding housing, and at this time, the paper outlet wheel presses on the sampling paper in the lowermost paper slot; when paper needs to be discharged, press the button on the handle briefly, and drive the paper outlet wheel to rotate in the corresponding direction through the paper outlet drive mechanism, convey the sampling paper from the paper slot to the paper outlet, and then transfer it from the paper outlet to the designated place to complete the current paper discharging operation;

[0032] When continuing to discharge paper, press the button at the handle again briefly. Drive the gear to rotate through the lifting drive motor, drive the paper rack to move downward, lower the upper storage slot to a position corresponding to the paper outlet of the paper feeding housing, and then perform the paper discharging operation to continue discharging paper; until the indicator light is red, indicating that all sampling papers have been sent out;

[0033] Press and hold the button. Drive the gear to reverse through the lifting drive motor, drive the paper rack to be sent out from the upper side, take out the paper rack without sampling paper, replace the next paper rack and continue to complete the paper feeding task;

[0034] After the sampling paper is sent to the paper outlet, print the test-related data information on the blank back of the paper outlet through the printing mechanism. The data information includes date, serial number, and group; among them, the printed information will change with the increase in the number of sampling papers to ensure the continuity and logic of the information printed on the sampling paper such as the number, etc., which is convenient for collection and storage after the test;

[0035] Repeat the above operations until all the pesticide droplet sampling papers of all paper racks are sent out to complete the paper feeding work.

[0036] The present invention has the following beneficial effects compared with the prior art:

[0037] 1. The present invention can automatically send out sampling papers, avoiding the hand contact pollution of sampling papers by staff, which is beneficial to reducing the errors and costs of the test.

[0038] 2. The sampling papers used in the present invention can be selected and replaced according to the test requirements, experimental environment and conditions, can meet the requirements of most droplet spraying tests, the results are more accurate, and the test design is more reasonable, which can provide a strong guarantee for the theoretical research related to droplets.

[0039] 3. The present invention designs a multi-layer paper rack that can be integrally replaced for continuous feeding operation, reducing the time required for supplementing image analysis and acquisition materials in the test, without complex pretreatment, and improving the test efficiency.

[0040] 4. The present invention can omit the process of manually entering a sealed paper bag to take out relevant materials during the test, making it simpler and more convenient. At the same time, a printing component is designed, which can print test-related information on the sampling paper, and the information is adjustable and can change with the number of sheets fed, ensuring the continuity and logic of the information printed on the sampling paper, such as numbers, etc., facilitating the collection, storage, and processing after the test, and having relatively low requirements for sample processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 FIG. is a three-dimensional structural schematic diagram of the portable handheld paper feeding device for sampling pesticide droplet image analysis according to the present invention.

[0042] Figure 2 FIG. is a cross-sectional view of the portable handheld paper feeding device for sampling pesticide droplet image analysis according to the present invention.

[0043] Figure 3 FIG. is a partial three-dimensional structural schematic diagram at the paper outlet of the paper feeding mechanism according to the present invention.

[0044] Figure 4 FIG. is a three-dimensional structural schematic diagram of the paper rack of the paper feeding mechanism according to the present invention.

[0045] Figure 5 FIG. is a working flow chart of the portable handheld paper feeding device for sampling pesticide droplet image analysis according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0047] See Figures 1-3 , the portable handheld paper feeding device for sampling pesticide droplet image analysis in this embodiment includes a paper feeding housing 1, a paper feeding mechanism and a printing mechanism arranged in the paper feeding housing 1.

[0048] A moving channel is provided in the paper feeding housing 1. An installation opening 1-1 is provided at the top of the moving channel, and a paper outlet 1-2 is provided on the side of the moving channel; wherein, a handle 1-3 for convenient grasping is provided on the paper feeding housing 1, and an indicator light and a control button (not shown in the figure) for controlling the paper feeding mechanism are provided on the handle 1-3. The indicator light emits lights of different colors to indicate the remaining situation of materials in the current device. Specifically, the paper feeding housing 1 is also provided with a battery for supplying power to each electronic module. See Figures 1-2 , a moisture-proof door 2 is provided on the installation opening 1-1. The moisture-proof door 2 is opened when replacing the multi-layer paper rack 3 and can be closed after replacement to reduce the influence of environmental factors such as humidity on the sampling paper.

[0049] See Figures 1-4, the paper feeding mechanism includes a paper rack 3, a lifting drive mechanism for driving the paper rack 3 to move up and down, and a paper discharging mechanism for sending out the sampling paper on the paper rack 3; the paper rack 3 is arranged in the moving channel, and a plurality of vertically arranged paper slots 3-1 are provided on the paper rack 3; a paper pressing component for pressing the sampling paper against the upper bottom surface of the paper slot 3-1 is provided in each paper slot 3-1.

[0050] See Figures 3-4 , the paper discharging mechanism includes a mounting arm 4, a paper discharging wheel 5 and a paper discharging drive mechanism; one end of the mounting arm 4 is rotatably connected, and the other end of the mounting arm 4 extends into the moving channel of the paper rack 3; the paper discharging wheel 5 is rotatably connected to the other end of the mounting arm 4; the driving end of the paper discharging drive mechanism is connected to the paper discharging wheel 5; a avoiding hole 3-2 for avoiding the paper discharging wheel 5 is provided on the lower bottom surface of the paper slot 3-1; in the working state, the paper discharging wheel 5 presses on the sampling paper in the paper slot 3-1 and conveys the sampling paper to the paper discharging port 1-2.

[0051] See Figure 2 , the lifting drive mechanism includes a lifting drive motor (not shown in the figure) and a lifting transmission component, the lifting transmission component includes a gear 6 and a rack 7, the rack 7 is vertically and fixedly arranged on the side wall of the paper rack 3, and the gear 6 is connected to the output shaft of the lifting drive motor.

[0052] See Figure 1 and 4 , a vertical guiding structure is provided between the paper rack 3 and the paper feeding housing 1, the vertical guiding structure includes a vertical guiding portion 8 and a vertical guiding groove 9, the vertical guiding portion 8 is arranged on the side surface of the paper rack 3, and the vertical guiding groove 9 is arranged in the paper feeding housing 1.

[0053] See Figures 1-2 , two infrared sensors 10 with different heights are provided in the paper feeding housing 1; both two infrared sensors 10 face the moving channel; when both two infrared sensors 10 detect the paper rack 3 at the same time, it means that the number of sampling papers is full; when the upper infrared sensor 10 does not detect the paper rack 3 while the lower infrared sensor 10 detects the paper rack 3, it means that the sampling papers have been used but there are leftovers; when neither of the two infrared sensors 10 detects the paper rack 3, it means that there are no remaining sampling papers and need to be replenished.

[0054] See Figures 2-3 , the paper pressing component includes a paper pressing spring 11 and a pressing plate 12, the bottom of the paper pressing spring 11 is fixed on the lower bottom surface of the paper slot 3-1, and the top of the paper pressing spring 11 is fixedly connected to the pressing plate 12. Through the above structure, the sampling paper can be fixed in the paper slot 3-1 to prevent displacement or falling.

[0055] See Figure 3, the paper output driving mechanism includes a paper output driving motor 13, which is arranged on the mounting arm 4 and connected to the paper output wheel 5. In this way, the paper output wheel 5 can be driven to rotate, and the sampling paper in the paper slot 3-1 can be transferred to the paper output port 1-2. The paper output driving mechanism is located in the control box at the rear side and is encapsulated with the controller single-chip microcomputer, which can effectively avoid the influence of water vapor and prevent the electronic components from getting damp. At the same time, the battery box is located below the indicator light and powers the whole device, and its battery can be replaced.

[0056] Further, in the working state, when the control button on the handle is pressed, the paper output driving motor 13 is driven by the controller single-chip microcomputer to control the paper output wheel 5 to send out the sampling paper, and then control the gear to rotate, driving the multi-layer paper rack to move downward until the next sampling paper reaches the paper output wheel 5 and stops.

[0057] See Figure 1 , the printing mechanism includes a printing base, a return spring 14, a printing handle 15 and a seal 16; the printing base is arranged outside the paper output port 1-2, and the printing base includes a lower base 17 and an upper base 18, and a printing channel 19 is provided between the lower base 17 and the upper base 18; the printing channel 19 is communicated with the paper output port 1-2; the return spring 14, the printing handle 15 and the seal 16 are arranged on the upper base 18, the upper base 18 is provided with a printing hole, the return spring 14 is supported between the printing handle 15 and the upper base 18, and the printing handle 15 is fixedly connected with the seal 16; in the working state, the seal 16 passes through the printing hole and approaches the lower printing channel 19. Through the above structure, when the sampling paper is sent out from the paper output port 1-2 and transferred to the printing channel 19, by pressing the printing handle 15, the test-related information can be printed on the sampling paper, and the information can be replaced as needed. For each piece of fog droplet collection material sent out, its number will increase or decrease according to the setting, ensuring the continuity and logic of all sampling papers, and also greatly shortening the later storage and processing process.

[0058] The paper feeding mechanism of this embodiment sends out the sampling paper and arranges it manually on the leaves of the vegetation required for the test, which is used to collect the aerial spraying fog droplets, greatly saving the time for manually taking out the sampling paper from the paper bag, and at the same time reducing the error influence of accidental touch on the sampling paper result.

[0059] See Figures 1-4 , the portable handheld paper feeding method for pesticide fog droplet image analysis sampling in this embodiment is as follows:

[0060] During work, it is divided into a preparation stage, a sampling material placement stage, a paper feeding stage and a printing stage to complete the fog droplet sampling and paper feeding task for aerial pesticide spraying, specifically as follows:

[0061] Preparation stage: Select a suitable sampling paper according to the test requirements, and measure the humidity of the experimental environment on-site. If the humidity of the site environment is relatively high, it is not convenient to use water-sensitive materials. Other image analysis sampling papers such as oil-sensitive paper, calomite paper card, coated paper, filter paper, chromatographic paper, photographic paper, etc. can be used. Select the content to be printed by the printing mechanism according to the test requirements, and reset the seal 16 of the printing mechanism. If there is no need to print, the printing mechanism can be disassembled. Before printing, the printing ink required for printing the required color needs to be replenished for the seal 16; at the same time, it is necessary to check whether the battery of the device is installed properly and whether the battery is charged.

[0062] Sampling material placement stage: In a windless and dry environment, wear gloves and place the sampling paper on the paper pressing component, and gently shake it to check whether the sampling paper is fixed; according to the above operation, place the sampling paper layer by layer. Each paper rack 3 has a total of n sampling papers (n>5), until all the paper slots 3-1 are filled with sampling papers; after the placement is completed, if a large amount of 3-2 pesticide droplet image analysis sampling materials are required, the number of paper racks 3 can be increased for replacement; in the working state, fill multiple paper racks 3 with sampling papers and carry them out for field tests. When needed, replace the paper rack 3 on-site, so there is no need to return to the indoor to load materials after each test. Then open the moisture-proof door 2, put the paper rack 3 through the installation port 1-1, so that the rack 7 on the paper rack 3 meshes with the gear 6 on the lifting drive motor, and start the lifting drive motor for a trial run to check the movement of the paper rack 3. After everything is normal, reset the paper rack 3, and the sampling paper placement is completed.

[0063] Paper feeding stage: First, check the indicator light color of the handle. If the material quantity is full, it should be green; in the initial state, the lowermost paper slot 3-1 corresponds to the paper outlet 1-2 of the paper feeding housing 1, and at this time, the paper feeding wheel 5 presses on the sampling paper in the lowermost paper slot 3-1.

[0064] When paper feeding is required, press the button on the handle briefly, and drive the paper feeding wheel 5 to rotate in the corresponding direction through the paper feeding drive mechanism, so as to convey the sampling paper from the paper slot 3-1 to the paper outlet 1-2, and then transfer it from the paper outlet 1-2 to the designated place to complete the current paper feeding operation. If you want to continue paper feeding, press the button at the handle again briefly, drive the gear 6 to rotate through the lifting drive motor, drive the paper rack 3 to move downward, so that the upper storage slot descends to a position corresponding to the paper outlet 1-2 of the paper feeding housing 1, and then perform the paper feeding operation to continue paper feeding; until the indicator light is red, indicating that all sampling papers have been sent out.

[0065] Press and hold the button, drive the gear 6 to reverse through the lifting drive motor, drive the paper rack 3 to be sent out from the installation port 1-1, take out the paper rack 3 without sampling paper, replace the next paper rack 3 and continue to complete the paper feeding task. According to the above operation, drive the paper rack 3 to move down layer by layer through the lifting drive motor, and the sampling paper in the paper slot 3-1 can be automatically sent out one by one, which can avoid the hand contact pollution of the sampling paper by the staff and is beneficial to reducing the error and cost of the test.

[0066] Printing stage: After the sampling paper is sent to the paper outlet, print the test-related data information such as date, serial number, group number, etc. on the blank back of the sampling paper. Press the seal 14 to complete the printing work. The printed information of the seal 14 will change with the increase in the number of sampling papers, ensuring the continuity and logic of the information printed on the sampling paper such as the number, etc., which is convenient for collection, storage and processing after the test.

[0067] Repeat the above operation until all the sampling papers for the analysis of the pesticide droplet images on all the multi-layer paper racks 3 are sent out, and the paper feeding work is completed.

[0068] The above is a preferred embodiment of the present invention, but the embodiments of the present invention are not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A portable handheld paper feeding device for pesticide droplet image analysis sampling, characterized in that, It includes a paper feeding housing and a paper feeding mechanism arranged inside the paper feeding housing; A moving channel is provided inside the paper feeding housing. An installation opening is provided at the top of the moving channel, and a paper outlet is provided on the side of the moving channel; The paper feeding mechanism includes a paper rack, a lifting drive mechanism for driving the paper rack to move up and down, and a paper outlet mechanism for sending out the sampling paper on the paper rack; The paper rack is arranged in the moving channel, and a plurality of vertically arranged paper grooves are provided on the paper rack; A paper pressing component for pressing the sampling paper against the upper bottom surface of the paper groove is provided in each paper groove; The paper outlet mechanism includes a mounting arm, a paper outlet wheel, and a paper outlet drive mechanism; One end of the mounting arm is rotatably connected, and the other end of the mounting arm extends into the moving channel of the paper rack; The paper outlet wheel is rotatably connected to the other end of the mounting arm; The drive end of the paper outlet drive mechanism is connected to the paper outlet wheel; An avoidance hole for avoiding the paper outlet wheel is provided on the lower bottom surface of the paper groove; In the working state, the paper outlet wheel presses on the sampling paper located in the paper groove and conveys the sampling paper to the paper outlet; The lifting drive mechanism includes a lifting drive motor and a lifting transmission component. The lifting transmission component includes a gear and a rack. The rack is vertically fixed on the side wall of the paper rack, and the gear is connected to the output shaft of the lifting drive motor; The sampling paper includes one or more of water-sensitive paper, oil-sensitive paper, calomel paper card, coated paper, filter paper, chromatographic paper, and photographic paper.

2. The portable handheld paper feeding device for pesticide droplet image analysis sampling according to claim 1, wherein A handle for convenient grasping is provided on the paper feeding housing. An indicator light and a control button for controlling the paper outlet mechanism are provided on the handle.

3. The portable handheld paper feeding device for pesticide droplet image analysis sampling according to claim 1, wherein A vertical guiding structure is provided between the paper rack and the paper feeding housing. The vertical guiding structure includes a vertical guiding portion and a vertical guiding groove. The vertical guiding portion is provided on the side surface of the paper rack, and the vertical guiding groove is provided inside the paper feeding housing.

4. The portable handheld paper feeding device for pesticide droplet image analysis sampling according to claim 1, characterized in that, A moisture-proof door is provided on the installation opening. The moisture-proof door is opened when replacing the multi-layer paper rack and closed after replacement.

5. The portable handheld paper feeding device for pesticide droplet image analysis sampling according to claim 1, characterized in that Two infrared sensors with different heights are provided inside the paper feeding housing; Both infrared sensors face the moving channel; When both infrared sensors detect the paper rack at the same time, it means that the number of sampling papers is full; When the upper infrared sensor does not detect the paper rack while the lower infrared sensor detects the paper rack, it means that the sampling paper has been used but there is still some left; When neither of the two infrared sensors detects the paper rack, it means that there is no remaining sampling paper and it needs to be replenished.

6. The portable handheld paper feeding device for sampling and analyzing pesticide droplet images according to claim 1, wherein, There are a plurality of paper racks, and each paper rack has n layers of paper grooves, n>5; In the working state, fill multiple paper racks with sampling papers and carry them out for experiments. Replace the paper rack on the spot when needed.

7. The portable hand-held paper feeding device for pesticide droplet image analysis sampling according to claim 1, characterized in that, The paper pressing component includes a paper pressing spring and a pressing plate. The bottom of the paper pressing spring is fixed on the lower bottom surface of the paper groove, and the top of the paper pressing spring is fixedly connected to the pressing plate.

8. The portable handheld paper feeding device for pesticide droplet image analysis sampling according to claim 1, characterized in that The paper outlet drive mechanism includes a paper outlet drive motor, and the paper outlet drive motor is arranged on the mounting arm and connected to the paper outlet wheel.

9. The portable hand-held paper feeding device for pesticide droplet image analysis sampling according to claim 1, characterized in that It further includes a printing mechanism, which includes a printing base, a return spring, a printing handle and a seal; the printing base is arranged outside the paper outlet, the printing base includes a lower base and an upper base, and a printing channel is arranged between the lower base and the upper base; the printing channel is communicated with the paper outlet; the return spring, the printing handle and the seal are arranged on the upper base, the upper base is provided with a printing hole, the return spring is supported between the printing handle and the upper base, and the printing handle is fixedly connected with the seal; In the working state, the seal passes through the printing hole and approaches the lower printing channel.

10. A portable handheld paper feeding method applied to the portable handheld paper feeding device for pesticide droplet image analysis sampling described in claim 9, characterized in that, It includes the following steps: Select the sampling paper according to the test requirements; measure the humidity of the experimental environment on-site, and select the corresponding sampling paper according to the humidity of the environment; Select the content printed by the printing mechanism according to the test requirements, and zero the printing mechanism. If printing is not required, the printing component can be disassembled; Before printing, it is necessary to replenish the printing ink required for printing the required color on the seal; at the same time, it is necessary to check whether the battery of the device is installed properly and whether the battery is charged; in a windless and dry environment, wear gloves and place the sampling paper layer by layer on the paper pressing component until all paper slots are filled with sampling paper; after the placement is completed, if a large number of sampling papers are required, the number of paper racks can be increased for replacement; Put the paper rack into the moving channel through the installation port, make the rack on the paper rack mesh with the gear on the lifting drive motor, and start the lifting drive motor for a trial run to check the movement of the paper rack; after normal operation, the paper rack is reset; Check the color of the indicator light. If the number of sampling papers is full, it is green; in the initial state, the lowermost paper slot corresponds to the paper outlet of the paper feeding housing, and at this time the paper outlet wheel presses on the sampling paper in the lowermost paper slot; when paper needs to be discharged, press the button on the handle briefly, and drive the paper outlet wheel to rotate in the corresponding direction through the paper outlet drive mechanism, convey the sampling paper from the paper slot to the paper outlet, and then transfer it to the designated place to complete the current paper outlet operation; If you want to continue discharging paper, press the button at the handle again briefly, drive the gear to rotate through the lifting drive motor, drive the paper rack to move downward, so that the upper storage slot descends to a position corresponding to the paper outlet of the paper feeding housing, and then perform the paper outlet operation to continue discharging paper; until the indicator light is red, indicating that all sampling papers have been sent out; Long press the button, drive the gear to reverse through the lifting drive motor, drive the paper rack to be sent out from the installation port, take out the paper rack without sampling paper, and replace the next paper rack to continue to complete the paper feeding task; After the sampling paper is sent to the paper outlet, print the test-related data information on the blank area on the back of the paper outlet through the printing mechanism. The data information includes the date, serial number, and group; Among them, the printed information will change with the increase in the number of sampling papers, ensuring the continuity and logic of the information printed on the sampling paper, which is convenient for collection and storage after the test; Repeat the above operations until all the pesticide droplet sampling papers of all paper racks are sent out to complete the paper feeding work.

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