CN112525819A - Quick detection device of quick-witted fog drop of water-sensitive paper - Google Patents

Abstract

The invention discloses a quick detection device for fog drops of water-sensitive paper, which comprises a shell, a photographing device, a light supplementing device, an adjusting device and a display screen, wherein the photographing device is arranged on the shell; the water sensitive paper test area is provided with a test hole communicated with the inner cavity of the shell, and a slide glass is sleeved in the test hole; the photographing device comprises a camera and an adjusting seat; the camera is positioned below the test hole, is opposite to and perpendicular to the central line of the slide glass, and comprises a light-diffusing plate, a lamp holder and a lamp bead; the adjusting device comprises a driving end, a screw rod, a positioning rod and a threaded sliding sleeve; the driving end is in transmission connection with the screw rod and is used for driving the screw rod to rotate, the threaded sliding sleeve is in threaded connection with the screw rod, and the adjusting seat is fixed on the threaded sliding sleeve; the invention provides a quick detection device for fog drops of water-sensitive paper, which is mainly used for detecting the water-sensitive paper in a test site, can translate a camera, ensures that the center of each segmentation unit is over against the camera, reduces errors, improves the detection precision of the fog drops of the water-sensitive paper and is convenient to operate.

Description

Quick detection device of quick-witted fog drop of water-sensitive paper

Technical Field

The invention belongs to the technical field of plant protection pesticide application detection, and particularly relates to a quick detection device for water-sensitive paper fog drops.

Background

The agricultural water-sensitive paper is often used for measuring the fog drop deposition distribution of different spraying modes in the environments of fields, agricultural machinery laboratories and the like so as to detect the spraying effect of equipment and evaluate the performance and operation parameters of spraying equipment, and has wider application.

The water-sensitive paper has the action principle that the water-sensitive paper develops color after meeting water and other solutions, so that a deposition pattern of spraying liquid drops is formed on the paper surface. Clear water-sensitive paper images are the premise and the basis for acquiring data such as droplet density, particle diameter, droplet number and the like, so that a stable image acquisition means is particularly important.

At present, equipment for directly acquiring water-sensitive paper images on a test site is lacked. The conditions for acquiring the water-sensitive paper image in a field test field are relatively poor, and the problems of disordered ambient light, serious turbulent wind and the like exist, so that the acquisition of the water-sensitive paper information is mainly completed in a laboratory at present.

However, with the rapid development of smart phones in recent years, cameras of some smart phones can take photos with tens of millions of pixels, and the smart phones become potential new solutions for rapidly acquiring water-sensitive paper images on site. The existing mobile phone is also used as a photographing tool, but due to the structural defect, the mobile phone is easy to shake during photographing, so that the photographing effect is poor, no effective light supplement is available, and the like; in addition, what is more critical is that, in the existing detection tool suitable for the test site, the paper surface of the water-sensitive paper is not perpendicular to the camera, only one-time photographing is performed, then the picture processing tool is used for dividing the picture, the picture is processed into a plurality of dividing units, and then the dividing units are processed, so that the picture facing the camera and the picture deviating from the camera have angular deviation, which affects the detection, the contrast between the dividing units has angular deviation, and the photographing device cannot meet the requirements along with the improvement of the requirements, and meanwhile, the existing photographing tool cannot photograph one by one, which brings troubles to the detection personnel, so that the research of the water-sensitive paper fog drop quick detection device is necessary.

Disclosure of Invention

Aiming at the defects and problems of the existing equipment, the invention provides a rapid detection device for fog drops of water-sensitive paper, which effectively solves the problem that the camera in the existing equipment cannot move, so that the camera cannot be over against each segmentation unit of the water-sensitive paper during shooting, and errors are brought to the subsequent image processing.

The technical scheme adopted by the invention for solving the technical problems is as follows: a quick detection device for fogdrops of water-sensitive paper comprises a shell, a photographing device, a light supplementing device, an adjusting device and a display screen; the top surface of the shell is provided with a display screen mounting area and a water-sensitive paper testing area, the display screen is mounted in the display screen mounting area, the water-sensitive paper testing area is provided with a testing hole communicated with the inner cavity of the shell, and a slide glass is sleeved in the testing hole; the photographing device comprises a camera and an adjusting seat; the camera is positioned below the test hole, is opposite to and perpendicular to the central line of the slide glass, is fixedly arranged on the adjusting seat and is connected with the display screen; the light supplementing device comprises a light diffusing plate, a lamp holder and a lamp bead; the light-diffusing plates are arranged on two sides of the test hole, the lamp holders are arranged on the outer sides of the light-diffusing plates in parallel at intervals, and the lamp beads are arranged on the lamp holders; the adjusting device comprises a driving end, a screw rod, a positioning rod and a threaded sliding sleeve; the driving end is in transmission connection with the screw rod and used for driving the screw rod to rotate, the threaded sliding sleeve is in threaded connection with the screw rod, a positioning sleeve is arranged on the outer side of the threaded sliding sleeve, and the positioning rod is arranged on the outer side of the screw rod and is sleeved in the positioning sleeve in a matching mode; the adjusting seat is fixed on the threaded sliding sleeve, so that the camera can translate along the central line direction of the slide glass below the slide glass.

Furthermore, the driving end is a stepping motor, and a rotating shaft of the stepping motor is in transmission connection with the screw rod through a coupler.

Furthermore, the display screen is a touch control display screen, and the display screen is connected with the camera and the stepping motor through a circuit board.

Furthermore, the two sides of the threaded sliding sleeve are provided with positioning sleeves, the positioning rods are arranged on the two sides of the screw rod, and the two positioning sleeves are correspondingly sleeved in the positioning rods.

Further, the driving end is a hand wheel.

Furthermore, the test hole is of a square structure, a blocking table is arranged at the bottom of the test hole, and the slide glass is fixed on the blocking table.

Further, adjust the seat and include riser and diaphragm, the fixed or integrative connection in the outside of position sleeve in upper end of riser is provided with the draw-in groove on the diaphragm, and the lagging is equipped with to the draw-in groove endotheca, and the lagging can slide in the draw-in groove to can be died by the jackscrew lock of draw-in groove side, the lagging is installed to the camera.

Furthermore, the lamp beads are installed in the middle of the lamp holder at intervals along the horizontal direction and are perpendicular to the light-diffusing plate.

The invention has the beneficial effects that: the invention is provided with a shell, and a photographing device, a light supplementing device, an adjusting device and a display screen are arranged in the shell, wherein the photographing device is used for photographing water-sensitive paper, the light supplementing device ensures the photographing effect, the adjusting device is used for adjusting the position of a camera, the camera is translated for a corresponding distance according to the division width, so that the camera can always face the division area, the camera can be guaranteed to face the water-sensitive paper when photographing, then the corresponding width of the center of a picture is intercepted by an image processing tool, and then the image is processed.

The threaded sliding sleeve is driven to translate by the rotation of the screw rod, the screw rod can be driven by a stepping motor or a hand wheel, the threaded sliding sleeve has various working modes, the positioning sleeves are arranged on two sides of the threaded sliding sleeve, and the positioning rods are sleeved in the positioning sleeves and can guide the threaded sliding sleeve, so that the stability of the threaded sliding sleeve is ensured.

Meanwhile, the touch display screen is arranged, the display screen can not only display images shot by the camera, but also can be used as a control terminal for controlling the rotation direction of the stepping motor (translation of the camera), shooting (shooting button) of the camera and the brightness of the lamp beads, the touch control device is convenient to use and various in functions, one interface can operate a plurality of components, the operation is convenient, and the effect of shooting each time is ensured.

The invention provides a quick detection device for fog drops of water-sensitive paper, which is mainly used for detecting the water-sensitive paper in a test site, can translate a camera, ensures that the camera can always face a shooting and cutting unit, namely ensures that the center of each cutting unit faces the camera, reduces errors, improves the detection precision of the fog drops of the water-sensitive paper, is convenient to operate, ensures the accuracy of a detection result, and is a great innovation for detecting the fog drops of the water-sensitive paper.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a schematic view of fig. 1 from another perspective.

Fig. 5 is a schematic view of the internal structure of the housing.

Fig. 6 is a front view of fig. 5.

Fig. 7 is a top view of fig. 5.

Fig. 8 is a schematic view of fig. 5 from another perspective.

Fig. 9 is a schematic structural diagram of the light supplement device.

The reference numbers in the figures are: 1 is a shell, 2 is a display screen, 3 is a slide hole, 4 is a raspberry pi optical fiber port, and 5 is a raspberry pi USB port; 6 is the switch, 7 is the power, 8 is the circuit board, 9 is step motor, 10 is the shaft coupling, 11 is the lead screw, 12 is the axle bed, 13 is the screw sliding sleeve, 14 is the position sleeve, 15 is the locating lever, 16 is the regulating plate, 17 is the camera, 18 is the lamp stand, 19 is the lamp pearl, 20 is the board that looses light, 21 is the riser, 22 is the diaphragm, 23 is the lagging.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example 1: the embodiment aims to provide a quick detection device for water-sensitive paper fog drops, which is mainly used for detecting water-sensitive paper in a test site, aims at the problem that a camera in the existing detection device cannot move, obtains an image by only taking a picture once, and then divides the image by using an image processing tool, so that a deviation exists between an area right facing the camera and the camera deviating from a certain angle, and the research of the water-sensitive paper fog drop detection device with the movable camera becomes necessary because the deviation obviously has an error under the condition that the shooting distance is short and the error exists between the processed image dividing unit deviating from the center and the real condition.

As shown in fig. 1-9, the detection device includes a housing 1, a photographing device, a light supplementing device, an adjusting device, and a display screen 2; in this embodiment, the housing 1 has a square structure, and the interior thereof is a hollow region, and a photographing, light supplementing and adjusting device is installed in the hollow region.

The top surface of the shell 1 is provided with a display screen mounting area and a water-sensitive paper testing area, the display screen 2 is mounted in the display screen mounting area, the water-sensitive paper testing area is provided with a testing hole communicated with the inner cavity of the shell, and a slide glass 3 is sleeved in the testing hole; the testing hole is of a square structure, a baffle table is arranged at the bottom of the testing hole, and the slide glass 3 is fixed on the baffle table; when the water-sensitive paper is detected, the test surface of the water-sensitive paper is attached to the slide glass 3, the slide glass 3 is of a transparent glass structure and is fixed on the blocking platform in an adhesion mode, although the back surface of the water-sensitive paper has certain shading capacity, most of the test sites are in an open environment, in order to further provide a good environment for shooting, the water-sensitive paper is prevented from being penetrated by strong light, the water-sensitive paper is embedded in the test hole, a cover plate is arranged on the outer side of the test hole, a sliding groove is formed in the outer side of the test hole, two sides of the cover plate are sleeved in the sliding groove and can slide along the sliding groove, the upper end of the water-sensitive paper can be sealed, the influence of the strong light on shooting is avoided, the water-sensitive paper can be further fixed, the water-sensitive paper is prevented from moving during shooting, the influence on the shooting result is avoided, and when the.

The photographing device comprises a camera 17 and an adjusting seat 16; the camera 17 is positioned below the test hole, the camera 17 is opposite to and perpendicular to the central line of the slide glass 3, and the camera 17 is fixedly arranged on the adjusting seat 16 and connected with the display screen 2; thereby the picture that camera 17 was shot can show on display screen 2, the display screen is touch control display screen in this embodiment, there is the control button that the control was shot on the display screen, display screen 2 passes through circuit board 8 and camera 17 connection of electric lines, the screenshot instrument in addition on the display screen 2 simultaneously, can carry out real-time processing to the image, and carry out contrastive analysis, be provided with storage module on the circuit board simultaneously, utilize the data line can derive the file of shooting, still be provided with raspberry on the circuit board and send optical fiber mouth 4 and raspberry and send USB mouth 5.

The light supplementing device comprises a light diffusing plate 20, a lamp holder 18 and a lamp bead 19; the light-diffusing plates 20 are arranged on two sides of the test hole, the lamp holders 18 are arranged on the outer sides of the light-diffusing plates 20 in parallel at intervals, and the lamp beads 19 are arranged on the lamp holders 18; specific test hole is the quad slit that sets up along the horizontal direction, and the diffusion sheet is parallel with the long limit of quad slit, and is located the both sides of quad slit, and the region between two diffusion sheets is regional for shooing, and the light that the lamp pearl sent provides soft light source for shooing the region behind the diffusion sheet, and the lamp pearl is installed at the middle part of lamp stand along the horizontal direction interval simultaneously, and perpendicular to diffusion sheet, guarantees the ambient light of shooing, improves the effect of shooing.

The adjusting device comprises a driving end, a screw rod 11, a positioning rod 15 and a threaded sliding sleeve 13; the driving end is in transmission connection with the screw rod 11 and is used for driving the screw rod 11 to rotate, the threaded sliding sleeve 13 is in threaded connection with the screw rod 11, the other end of the screw rod is rotatably sleeved on the shaft seat 12, a positioning sleeve 14 is arranged on the outer side of the threaded sliding sleeve 13, the positioning rod 15 is arranged on the outer side of the screw rod 11, a through positioning hole is formed in the center of the positioning sleeve 14, and the positioning rod 15 is sleeved in the positioning hole in a matched mode; the adjusting seat 16 is fixed on the threaded sliding sleeve 13, so that the camera 17 can translate along the central line direction of the slide glass 3 below the slide glass, the driving section is a hand wheel in the embodiment, the rotation direction of the screw rod is adjusted through forward rotation or reverse rotation of the hand wheel, and the camera head translates left and right.

Meanwhile, a power supply 7 is arranged on a power supply fixing frame of the shell, the power supply 7 provides electric support for the equipment, and a switch 6 of the power supply is arranged on the side face of the shell.

This embodiment is when concrete implementation, the starting power supply, open the device, open the apron, clearance slide glass surface, the one side orientation of the quick paper of water and the fog droplet spot mark of experimental usefulness is put at the slide glass in the subsides, then seal the test hole with the apron, observe the position and the environmental condition of closing that the camera is located on the display screen, the luminance of adjustment lamp pearl, and the position of operation control end adjustment camera, the quick paper image of the relative even water of illumination intensity is shot to the camera, after the completion, it shoots to move the camera to next place, send through the raspberry at last and draw, image enhancement, filtering process, binarization, transmit the fog droplet deposition characteristic result to the display screen after the adhesion is cut apart on.

This embodiment draws the fog droplet spot on the quick-witted paper of water sensitive and cuts apart the count from this, and convenient operation can not cause the influence to the evaluation result because of cell-phone illumination intensity is inhomogeneous etc. of shooing, provides a hand-held type quick-witted monitoring devices that shoots water sensitive, can satisfy the quick-witted paper image of high quality of test demands such as fog droplet deposit distribution parameter survey

Example 2: this example is substantially the same as example 1, except that: the driving end of this embodiment is a stepper motor.

The drive end is step motor 9, and step motor 9's pivot is connected with lead screw 11 transmission through shaft coupling 10, display screen 2 is touch control display screen, and the display screen is connected with camera 17 and step motor 9 through circuit board 8, and power 7 provides electric support for step motor 9, and display screen 2 is as step motor's control terminal simultaneously, controls step motor's turning to.

This embodiment provides one kind from this and is provided power by the power to control step motor by the touch-sensitive screen, and then make the lead screw rotate, it is convenient to use and adjust, degree of automation is high, and operating procedure is simple.

Example 3: this example is substantially the same as example 1, except that: this embodiment provides a double positioning rod 15.

And the two sides of the threaded sliding sleeve are provided with positioning sleeves 14, the positioning rods 15 are arranged on the two sides of the screw rod 11, and the two positioning sleeves are correspondingly sleeved in the positioning rods.

The double positioning rods 15 are arranged in the embodiment, the double positioning rods 15 are symmetrically arranged on two sides of the screw rod, the positioning sleeve 14 is in a square block structure, a positioning hole is formed in the middle of the positioning sleeve, and the positioning rod is sleeved in the positioning hole, so that the threaded sliding sleeve can be ensured to be capable of stably translating along the positioning rod, and the stability of the equipment is improved.

Simultaneously, adjust the seat and include riser 21 and diaphragm 22, fixed or the body coupling in the outside of position sleeve 14 in the upper end of riser 21 is provided with the draw-in groove on the diaphragm 22, and bushing 23 is equipped with in the draw-in groove, and bushing 23 can slide in the draw-in groove to can be died by the jackscrew lock of draw-in groove side, camera 17 installs at bushing 23, the jackscrew sets up on the bottom surface, and the bottom surface of casing is for the spiral-lock in the casing main part, thereby can adjust the camera and in the Y direction position of shooting region.

Example 4: this example is substantially the same as example 3, except that: the present embodiment limits the shooting area of the camera 17 between the partitions.

Be provided with vertical baffle in the both sides of diaphragm 22, thereby both sides baffle, both sides diffusion board, the diaphragm of bottom and the top surface of casing have enclosed the shooting region (cuboid form) of camera, the baffle is injectd the shooting angle of camera in certain extent (the spacing distance of two baffles is the image division width), the later stage need not cutting apart the processing to the image, be provided with the scale mark in the inboard long limit department of test hole simultaneously, the scale mark is in shooting the region, and show on shooting the image, the scale mark is used for the position of sign baffle, and judge this shooting region position at the water sensitive paper according to the reading of baffle at the scale mark, this division unit is in the position of water sensitive paper promptly.

Claims (8)

1. The utility model provides a quick detection device of water-sensitive paper droplet which characterized in that: the device comprises a shell, a photographing device, a light supplementing device, an adjusting device and a display screen; the top surface of the shell is provided with a display screen mounting area and a water-sensitive paper testing area, the display screen is mounted in the display screen mounting area, the water-sensitive paper testing area is provided with a testing hole communicated with the inner cavity of the shell, and a slide glass is sleeved in the testing hole; the photographing device comprises a camera and an adjusting seat; the camera is positioned below the test hole, is opposite to and perpendicular to the central line of the slide glass, is fixedly arranged on the adjusting seat and is connected with the display screen; the light supplementing device comprises a light diffusing plate, a lamp holder and a lamp bead; the light-diffusing plates are arranged on two sides of the test hole, the lamp holders are arranged on the outer sides of the light-diffusing plates in parallel at intervals, and the lamp beads are arranged on the lamp holders; the adjusting device comprises a driving end, a screw rod, a positioning rod and a threaded sliding sleeve; the driving end is in transmission connection with the screw rod and used for driving the screw rod to rotate, the threaded sliding sleeve is in threaded connection with the screw rod, a positioning sleeve is arranged on the outer side of the threaded sliding sleeve, and the positioning rod is arranged on the outer side of the screw rod and is sleeved in the positioning sleeve in a matching mode; the adjusting seat is fixed on the threaded sliding sleeve, so that the camera can translate along the central line direction of the slide glass below the slide glass.

2. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 1, wherein: the driving end is a stepping motor, and a rotating shaft of the stepping motor is in transmission connection with the screw rod through a coupler.

3. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 2, wherein: the display screen is a touch control display screen, and the display screen is connected with the camera and the stepping motor through a circuit board.

4. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 1, wherein: the two sides of the threaded sliding sleeve are provided with positioning sleeves, the positioning rods are arranged on the two sides of the screw rod, and the two positioning sleeves are correspondingly sleeved in the positioning rods.

5. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 1, wherein: the driving end is a hand wheel.

6. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 1, wherein: the test hole is of a square structure, a blocking table is arranged at the bottom of the test hole, and the slide glass is fixed on the blocking table.

7. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 1, wherein: the adjusting seat comprises a vertical plate and a transverse plate, the upper end of the vertical plate is fixedly connected with the outer side of the positioning sleeve or integrally connected with the outer side of the positioning sleeve, a clamping groove is formed in the transverse plate, a sleeve plate is sleeved in the clamping groove, the sleeve plate can slide in the clamping groove and can be locked by a top thread on the side face of the clamping groove, and the camera is installed on the sleeve plate.

8. The device for rapidly detecting the fog drops of the water-sensitive paper as claimed in claim 1, wherein: the lamp beads are installed in the middle of the lamp holder at intervals in the horizontal direction and are perpendicular to the light diffusion plate.

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