A consumable-free online droplet deposition detection device and method

Abstract

The present invention relates to a non-consumable online droplet deposition detection device and method, comprising a housing, a receiving plate, a telescopic mechanism, a droplet image acquisition device and a control system. The receiving plate is used to receive droplet distribution on the front and back sides respectively in a foggy scene; the telescopic mechanism is used to control the telescopic movement of the receiving plate relative to the housing; the droplet acquisition device is used to simultaneously acquire images of droplet distribution on the front and back sides of the receiving plate; the control system is used to control image acquisition and transmission as well as internal and external control. The present invention can replace water-sensitive paper and some traditional droplet detection methods, and is more convenient for on-site detection of droplet deposition during pesticide application and rapid evaluation of spray performance, and has the advantages of good real-time detection, no consumables, multiple reuses, and low cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of plant protection pesticide application detection, and relates to an online droplet deposition detection device and method without consumables. The device and method are suitable for on-site detection of pesticide droplet deposition and rapid evaluation of spray performance, and have the advantages of good real-time detection, no consumables, multiple reuse, and low cost. Background Art

[0002] The uniformity of droplet deposition distribution on the target during spray application is one of the important indicators for measuring spray quality. In order to study the reliability and stability of spray quality, the spray deposition amount, deposition density and distribution uniformity can be analyzed. Through these research data, the influence of the height or running speed of the spray machine on the deposition uniformity and concentration during the spray process can be analyzed.

[0003] Traditional methods for detecting droplet deposition mainly include water-sensitive paper method, oil pan method, tracer method and other detection methods, which are used to detect the deposition pattern of droplets and the utilization rate of pesticides. At the pesticide application test or plant protection operation site, water-sensitive paper is placed on different parts of the plant to collect the droplets of the liquid medicine, and then the deposition amount of the collected droplets is analyzed by professional instruments and equipment to determine the deposition of droplets in different parts of the plant. In the water-sensitive paper droplet deposition measurement method, since water-sensitive paper is expensive and can only be used once, the workload is large and the efficiency is low. At present, the water-sensitive paper method and tracer method can only detect the distribution of droplets on the front during the test, and cannot detect the distribution and uniformity of droplets on the back of the leaf. In addition, changes in the material of water-sensitive paper selected by manufacturers also affect differences in characteristics such as bleeding and outward expansion, which in turn affects the accuracy of detection.

[0004] Therefore, there is an urgent need for an online droplet deposition detection device and method without consumables to achieve rapid and on-site detection of crop droplet deposition characteristics and accurately evaluate droplet deposition performance. Summary of the invention

[0005] In view of the above-mentioned deficiencies in droplet deposition detection, the present invention provides a consumable-free online droplet deposition detection device and method, which is suitable for on-site detection of droplet deposition during pesticide application and rapid evaluation of spray performance, and has the advantages of good real-time detection, no consumables, multiple reuse, and low cost.

[0006] The technical solution adopted by the online droplet deposition detection device without consumables of the present invention is characterized by comprising a housing, a receiving plate, a telescopic mechanism, a droplet image acquisition device and a control system. The housing is made of opaque material and is used to fix other devices and isolate external light; the receiving plate is an opaque thin plate in an elongated rectangular shape, preferably made of hydrophobic material, and is used to receive droplet distribution on the front and back sides in the spraying scene.

[0007] The telescopic mechanism includes a micro-reduction motor and four receiving plate clamping wheels; the receiving plate clamping wheels are fixed to the outer shell through a fixed shaft and are used to clamp the receiving plate tightly; the micro-reduction motor is fixed to the outer shell, and the micro-reduction motor drives the receiving plate clamping wheels to rotate forward and reverse to extend or retract the receiving plate relative to the outer shell.

[0008] The droplet image acquisition device includes two reflectors, two surface light sources and a macro camera module, which is used to simultaneously acquire the droplet distribution images on the front and back surfaces of the receiving plate. The two reflectors are fixed on the housing at a certain angle to the front and back surfaces of the receiving plate, preferably in the range of 45 to 70 degrees; the two surface light sources are arranged on both sides of the front and back surfaces of the receiving plate, fixed on the housing, and provide imaging light sources for the reflectors; after the droplets are deposited on the front and back surfaces of the receiving plate, the droplets on the front and back surfaces are reflected on the corresponding reflectors by the reflection of the surface light sources; the macro camera module is preferably a high-resolution macro industrial camera, which is arranged in parallel on one side of the receiving plate and fixed on the housing, and the images captured by the macro camera module simultaneously include the droplet distribution on the front and back surfaces of the receiving plate reflected in the two reflectors.

[0009] The control device includes a power supply, a single-chip microcomputer module and a wireless communication module. The single-chip microcomputer module is connected to the motor driver micro-reduction motor to realize the forward and reverse control of the micro-reduction motor, thereby driving the extension and retraction movement of the receiving plate; the wireless communication module is used to realize the transmission of control instructions and image information with the external wireless system; the single-chip microcomputer module is connected to the macro camera module through the bus to realize the control of shooting instructions and the transmission of shot images. The power supply is used to supply power to the device power module.

[0010] The present invention provides a method for using a consumable-free online droplet deposition detection device, which is characterized by comprising the following steps:

[0011] 1) placing the droplet test device of the present invention inside a plant group or in a pesticide application test area;

[0012] 2) The external remote control command is driven by the micro reduction motor through the single chip module to extend the receiving plate, and then the spraying operation begins. The front and back sides of the receiving plate receive the droplet distribution;

[0013] 3) After the spraying operation, the external remote control command is driven by the micro reduction motor through the single chip module to retract the receiving plate to the specified position;

[0014] 4) The single-chip microcomputer module turns on the surface light source and turns on the macro camera module to capture the distribution images of the droplets on the front and back reflectors of the receiving plate;

[0015] 5) The single-chip microcomputer module divides the captured image into two separate front and back image files, and performs droplet deposition analysis locally, or transmits the two image files to a remote system through a wireless communication module to use droplet deposition software for analysis;

[0016] 6) After statistical analysis of droplet deposition, statistical information of droplet distribution is given, such as volume median diameter, particle size spectrum distribution, etc.

[0017] The beneficial effects of the present invention are:

[0018] 1. The online droplet deposition detection device of the present invention realizes on-site arrangement and rapid online detection of droplet deposition performance;

[0019] 2. The present invention can replace water-sensitive paper to detect the effect of droplet deposition, has no consumables, can be used multiple times, is easy to operate, and has strong promotional potential;

[0020] 3. The present invention can simultaneously detect the front and back sides of the droplets, with a high degree of automation. In addition, the use of hydrophobic materials reduces the diffusion of droplets, so it can be used for spray performance evaluation more accurately and quickly;

[0021] 4. The present invention can provide a reference for the selection of spray parameters for pesticide application in different growth stages of crops, improve the effective utilization rate of pesticides, and reduce the pollution of pesticides to the ecological environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front oblique view of the receiving plate of the droplet detection device when it is extended;

[0023] Figure 2 It is a front oblique view of the mist droplet detection device when the receiving plate is retracted;

[0024] Figure 3 It is a rear oblique view of the mist droplet detection device when the receiving plate is retracted;

[0025] In the figure: 1, surface light source 2, macro camera module 3, micro reduction motor 4, receiving plate 5, single chip microcomputer module 6, wireless communication module 7, receiving plate clamping wheel 8, reflector 9, power supply DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings. A consumable-free online droplet deposition detection device and method, such as Figure 1 , 2 3. The housing is made of opaque material to fix other devices and isolate external light; the receiving plate 4 is an elongated rectangular opaque thin plate, preferably made of hydrophobic material, and is used to receive fog droplets on the front and back sides in foggy scenes.

[0027] The telescopic mechanism includes a micro-reduction motor 3 and four receiving plate clamping wheels 7; the receiving plate clamping wheels 7 are fixed to the outer shell through a fixed shaft, and are used to clamp the receiving plate 4 tightly; the micro-reduction motor 3 is fixed to the outer shell, and the micro-reduction motor 3 drives the receiving plate clamping wheels 7 to rotate forward and reverse to extend or retract the receiving plate 4 relative to the outer shell.

[0028] The droplet image acquisition device includes two reflectors 8, two surface light sources 1 and a macro camera module 2, which are used to simultaneously capture the droplet distribution images on the front and back surfaces of the receiving plate. The two reflectors 8 are fixed on the outer shell at a certain angle to the front and back surfaces of the receiving plate 4, respectively, and the preferred angle range is 45 to 70 degrees. The two surface light sources 1 are arranged on both sides of the front and back surfaces of the receiving plate 4 and fixed on the outer shell to provide imaging light sources for the reflectors 8. After the droplets are deposited on the front and back surfaces of the receiving plate 4, the droplets on the front and back surfaces are reflected on the corresponding reflectors 8 by the reflection of the surface light source 1. The macro camera module 2 is preferably a high-resolution macro industrial camera, which is arranged in parallel on one side of the receiving plate 4 and fixed on the outer shell. The captured image simultaneously includes the droplet distribution on the front and back surfaces of the receiving plate 4 reflected in the two reflectors 8.

[0029] The control device includes a power supply 9, a single-chip microcomputer module 5 and a wireless communication module 6. The single-chip microcomputer module 5 is connected to the micro-reduction motor 3 to realize the forward and reverse control of the micro-reduction motor 3, thereby driving the extension and retraction movement of the receiving plate 4; the controller is connected to the wireless communication module 6 to realize the transmission of control instructions and image information with the external wireless system; the single-chip microcomputer module 5 is connected to the macro camera module 2 through the bus to realize the control of shooting instructions and the transmission of shooting images. The power supply 9 supplies power to the device power module.

[0030] The present invention provides a method for using a consumable-free online droplet deposition detection device, which is characterized by comprising the following steps:

[0031] 1) placing the droplet test device of the present invention inside a plant group or in a pesticide application test area;

[0032] 2) The external remote control command is driven by the micro reduction motor through the single chip module to extend the receiving plate, and then the spraying operation begins. The front and back sides of the receiving plate receive the droplet distribution;

[0033] 3) After the spraying operation, the external remote control command is driven by the micro reduction motor through the single chip module to retract the receiving plate to the specified position;

[0034] 4) The single-chip microcomputer module turns on the surface light source and turns on the macro camera module to capture the distribution images of the droplets on the front and back reflectors of the receiving plate;

[0035] 5) The single-chip microcomputer module divides the captured image into two separate front and back image files, and performs droplet deposition analysis program analysis locally, or transmits the two image files to a remote system through a wireless communication module to use droplet deposition software analysis;

[0036] 6) After statistical analysis of droplet deposition, statistical information on droplet distribution is given, such as volume median diameter, particle size spectrum distribution, droplet coverage, and deposition per unit area.

Claims

1. A consumable-free online droplet deposition detection device, characterized in that: It includes a shell, a receiving plate, a telescopic mechanism, a fog drop image acquisition device and a control system; the shell is made of opaque material and is used to fix other devices and isolate external light; the receiving plate is an elongated rectangular opaque thin plate made of hydrophobic material and is used to receive fog drop distribution on the front and back sides in the spraying scene; The telescopic mechanism includes a micro-reduction motor and four receiving plate clamping wheels; the receiving plate clamping wheels are fixed to the housing through a fixed shaft and are used to clamp the receiving plate tightly; the micro-reduction motor is fixed to the housing, and the micro-reduction motor drives the receiving plate to extend or retract the receiving plate relative to the housing in a lateral movement in coordination with the forward and reverse rotation of the receiving plate clamping wheels; The droplet image acquisition device includes two reflectors, two surface light sources and a macro camera module, which are used to simultaneously acquire the droplet distribution images on the front and back surfaces of the receiving plate; the two reflectors are fixed on the housing at a certain angle to the front and back surfaces of the receiving plate, and the angle range is 45 degrees to 70 degrees; the two surface light sources are arranged on both sides of the front and back surfaces of the receiving plate, fixed on the housing, and provide imaging light sources for the reflectors; After the droplets are deposited on the front and back sides of the receiving plate, the droplets on the front and back sides are reflected on the corresponding reflectors through the reflection of the surface light source; the macro camera module uses a high-resolution macro industrial camera, which is arranged in parallel on one side of the receiving plate and fixed on the shell, and the image it captures simultaneously includes the distribution of droplets on the front and back sides of the receiving plate reflected in the two reflectors; The control system includes a power supply, a single-chip microcomputer module and a wireless communication module. The single-chip microcomputer module is connected to the motor driver micro-reduction motor to realize the forward and reverse control of the micro-reduction motor, thereby driving the telescopic movement of the receiving plate; the wireless communication module is used to realize the transmission of control instructions and image information with the external wireless system; the single-chip microcomputer module is connected to the macro camera module through a bus to realize the control of shooting instructions and the transmission of shot images; the power supply supplies power to the device power module.

2. The detection method of the online droplet deposition detection device without consumables according to claim 1 is characterized in that: The steps include: 1) Place the droplet test device inside the plant group or in the pesticide test area; 2) The external remote control command is driven by the micro reduction motor through the single chip module to extend the receiving plate, and then the spraying operation begins. The front and back sides of the receiving plate receive the droplet distribution; 3) After the spraying operation, the external remote control command is driven by the micro reduction motor through the single chip module to retract the receiving plate to the specified position; 4) The single-chip computer module turns on the surface light source and the macro camera module to capture the distribution images of the droplets on the front and back reflectors of the receiving plate; 5) The single-chip microcomputer module divides the captured image into two separate front and back image files, and performs droplet deposition analysis locally, or transmits the two image files to a remote system through a wireless communication module to use droplet deposition software for analysis; 6) After statistical analysis of droplet deposition, the statistical information of droplet distribution is given, including volume median diameter, particle size spectrum distribution, droplet coverage, and deposition per unit area.

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