A detection method capable of improving detection precision of fruit mildew heart disease

Abstract

The present application relates to the technical field of detection of fruit core rot, and discloses a detection method capable of improving the detection accuracy of fruit core rot, comprising the following steps: forming aggregated light by two parallel weak light sources, combining the two aggregated lights, and forming a parallel light with uniform intensity, large amplitude and wide range by another concave lens after the combined light source, the parallel light is received by an optical fiber after passing through the fruit, and the fruit core rot is detected by analyzing the spectral information. The two weak parallel light sources are formed into aggregated light after passing through the lens, the use efficiency of the single weak light source is improved, each aggregated light is combined into a strong sector light source, and a uniform parallel light is formed after setting a concave lens in front of the sector light source convergence point. The parallel light has uniform intensity and wide range, and the spectral information received by the receiving end optical fiber at different positions has small difference. The overall light path has small construction range, is different from the traditional method, and the consistency and effectiveness of the light source passing through the fruit are obviously improved, and the fruit core rot detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mold heart disease detection, and particularly relates to a detection method capable of improving fruit mold heart disease detection precision. BACKGROUND

[0002] Fruit mold heart disease detection is an important technical guarantee for improving fruit quality, and light path construction is the basis of mold heart disease detection. The traditional method is to form aggregated light through a lens. With the change of the travel distance, the light domain and the light intensity will be different, and the spectral data obtained by the optical fiber at different positions of the receiving end will be quite different. For some fruits with thick peels, firm flesh and large diameters, such as pears and flower cow fruits, it is difficult to detect. The reason is that the light travels a long distance through the fruit, the attenuation amplitude is large, the received spectral amplitude is low, and the noise is large. Relying on the method of improving the power of the light emitter will cause large heat dissipation and short service life of the light emitter, which is not conducive to industrial application. SUMMARY

[0003] To solve the technical problems proposed in the background art, the present application provides a detection method capable of improving fruit mold heart disease detection precision.

[0004] The present application adopts the following technical scheme: a detection method capable of improving fruit mold heart disease detection precision, comprising the following steps

[0005] Two parallel weak light sources are used to form aggregated light, and the two aggregated lights are combined. The combined light source passes through another concave lens to form a parallel light with uniform intensity, large amplitude and wide range. The parallel light is received by an optical fiber after passing through the fruit, and the fruit mold heart disease is detected by analyzing the spectral information.

[0006] The present application also provides a detection device capable of improving fruit mold heart disease detection precision, which is used for the above-mentioned detection method, and comprises

[0007] A workbench, a light focusing assembly, a parallel light assembly, a product fixing assembly and a light receiving assembly.

[0008] The light focusing assembly is provided with at least two groups of convex lens units for converging the light source.

[0009] The parallel light assembly is arranged before the light focusing point of the light focusing assembly and is used to form a parallel light beam.

[0010] The product fixing assembly is arranged on the light emitting side of the parallel light assembly and is used to fix the fruit.

[0011] The light receiving assembly is used to receive the spectral information passing through the fruit.

[0012] As a further improvement of the above-mentioned scheme, the convex lens unit comprises a mounting module and a convex lens connected with the mounting module, the mounting module comprises a sliding groove I, a mounting column slidingly connected in the sliding groove I, an annular groove is formed in the mounting column, a gear ring is arranged on the outer circumferential side of the annular groove, and a push-pull rod slidingly connected with the mounting column is arranged at the annular groove, a toothed plate is arranged on the side surface of the push-pull rod and engaged with the gear ring, and the convex lens is connected to the top end of the mounting column.

[0013] The above-mentioned scheme can conveniently adjust the included angle between the convex lens and the light source, and facilitate adjustment and use according to the position of the light source.

[0014] As a further improvement of the above-mentioned scheme, the bottom end of the mounting column is rotatably connected with a movable block, the movable block is slidingly connected with the sliding groove, and two groups of convex lens units are symmetrically arranged along the lengthwise centerline of the workbench, the push-pull rods in the two groups of convex lens units are connected by a connecting rod, and the connecting rod can be extended and retracted in the width direction of the workbench.

[0015] Through the arrangement of the two groups of convex lenses, the light beams of multiple light sources can be converged, and the light source intensity penetrating the fruits can be improved without increasing the power of the light sources.

[0016] As a further improvement of the above-mentioned scheme, the product fixing assembly comprises a placement plate, a base plate, and a height adjusting module connecting the base plate and the placement plate, the bottom of the base plate is provided with a mounting module connected with the workbench, and the top of the placement plate is provided with a positioning module for fixing fruits.

[0017] Through the above structure, the position of the fruits can be adjusted, and the adjustment can be made according to actual needs, so that the measurement structure is more accurate.

[0018] As a further improvement of the above-mentioned scheme, the height adjusting module comprises a base, four adjusting columns arranged in a rectangular shape, the base is fixed on the base plate, the base is provided with screw grooves corresponding to the adjusting columns arranged in a rectangular shape, the bottom end of the adjusting column is screw-connected with the corresponding screw groove, the top of the adjusting column is rotatably connected with the placement plate, the middle part of the adjusting column is sleeved with a gear ring, two parallel movable rods are slidingly connected on the base, each of the two movable rods is provided with a gear rack I on the adjacent two sides, the movable rod is provided with a gear rack II on the side away from the movable rod, a transmission gear is rotatably arranged between the two movable rods, the transmission gear is engaged with the two gear racks I respectively, the gear rack II is engaged with the adjacent gear ring, and hand-held rods are fixed on both ends of the movable rod.

[0019] The structure of the above-mentioned scheme is convenient to operate and can quickly adjust the height of the fruits.

[0020] As a further improvement of the above-mentioned scheme, the mounting module comprises a magnetic block and a mounting sliding seat, the mounting sliding seat is slidingly connected with the top surface of the base, the magnetic block and the mounting sliding seat are both fixed on the bottom surface of the base plate, and the top surface of the workbench is provided with a magnetic layer capable of being magnetically attracted to the magnetic block.

[0021] Through the above arrangement, the position of the substrate on the workbench can be conveniently adjusted, and selection can be made according to actual needs.

[0022] As a further improvement of the above scheme, the positioning module is provided with at least two groups, and the positioning module comprises a pressing plate, a vertical column and a columnar spring, wherein the vertical column is vertically fixed on the top surface of the placing plate, one end of the pressing plate is movably sleeved on the vertical column, the columnar spring is installed on the outer side of the vertical column between the pressing plate and the placing plate, and the pressing plate and the placing plate are used for placing fruits.

[0023] Through the above structure, the fruit can be clamped from above, the internal inspection of the fruit is not affected, the operation is fast and editing, and the work efficiency is improved.

[0024] As a further improvement of the above scheme, the parallel light assembly and the light receiving assembly each comprise a connecting module, the connecting module comprises an adjusting groove opened on the base, a sliding block slidably installed in the adjusting groove, a connecting rod fixed on the sliding block, a positioning ring movably sleeved on the connecting rod, a return spring installed on the outer side of the connecting rod between the positioning ring and the sliding block, the two ends of the return spring are connected with the sliding block and the positioning ring respectively, and the top end of the connecting rod is used for being connected with the concave lens in the parallel light assembly or the light receiving device in the light receiving assembly.

[0025] The position of the concave lens or the position of the optical fiber receiving device can be quickly adjusted through the connecting module

[0026] As a further improvement of the above scheme, the top surface of the workbench around the adjusting groove is provided with a plurality of anti-skid protrusions, and the anti-skid protrusions can increase the friction between the positioning ring and the top surface of the workbench.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] The present application forms an aggregated light through a lens after two weak parallel light sources, improves the use efficiency of a single weak light source, and each aggregated light converges to form a strong fan light source. After a concave lens is arranged in front of the fan light source convergence point, uniform parallel light is formed. The parallel light intensity is uniform, the range is wide, and the spectral information received by the receiving end optical fiber at different positions has small differences. The overall light path is small in construction range, and is different from the traditional method. The consistency and effectiveness of the light source penetrating the fruit are obviously improved, the detection accuracy of the fruit mold heart disease is improved, and the problem that the light is difficult to penetrate the fruit in the detection of large-diameter fruit is solved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The principle diagram of the detection method provided for embodiment 1 of the present application is provided;

[0030] Figure 2 The light source convergence effect diagram when two convex lenses are provided for embodiment 1 of the present application is provided.

[0031] Figure 3 The light source convergence effect diagram of three convex lenses provided for the embodiment 1 of the present application;

[0032] Figure 4 The partial structure top view of the detection equipment provided for the embodiment 2 of the present application;

[0033] Figure 5 The partial structure schematic diagram of the light collecting assembly provided for the embodiment 2 of the present application;

[0034] Figure 6 The partial structure top view of the product fixing assembly provided for the embodiment 2 of the present application;

[0035] Figure 7 The partial structure side view of the product fixing assembly provided for the embodiment 2 of the present application;

[0036] Figure 8 The top structure schematic diagram of the connecting module provided for the embodiment 2 of the present application;

[0037] Figure 9 The side structure schematic diagram of the connecting module provided for the embodiment 2 of the present application.

[0038] Main symbol explanation:

[0039] In the figure: workbench 1, light collecting assembly 2, parallel light assembly 3, product fixing assembly 4, light receiving assembly 5, sliding groove 201, annular groove 202, mounting column 203, push-pull rod 204, connecting rod 205, placing plate 401, hand-held rod 402, movable rod 403, transmission gear 404, adjusting column 405, pressing plate 406, vertical column 407, columnar spring 408, gear ring 409, magnetic attraction block 410, base plate 411, mounting sliding seat 412, base 413, threaded groove 414, positioning ring 6, adjusting groove 7, sliding block 8, anti-skid protrusion 9, return spring 11, connecting rod 12. DETAILED DESCRIPTION

[0040] In the following, the present application is further described in conjunction with the drawings and specific embodiments, and it should be noted that, under the premise of no conflict, the following described embodiments or technical features can be combined to form new embodiments.

[0041] Embodiment 1:

[0042] The detection method provided by the present application can improve the detection precision of fruit mildew heart disease, and comprises the following steps

[0043] As Figure 1As shown, two parallel weak light sources form aggregated light, and the two aggregated lights are combined. The combined light source passes through another concave lens to form a parallel light with uniform intensity, large amplitude and wide range. The parallel light passes through the fruit and is received by an optical fiber. The fruit rot heart disease is detected by analyzing the spectral information.

[0044] Further, as shown in Figure 2 , the parallel light formed by the two weak light sources passes through a convex lens with a focal length of f1. The two lenses are located on the tangent of the circle with the convergence point as the center and f1 as the radius. The edges of the two lenses intersect. As can be seen from the following figure, the light passing through the two lenses forms a fan shape.

[0045] If the intensity of the light source is not enough, multiple convex lenses with the same focal length and intersecting edges can be used to form fan-shaped light. As shown in Figure 3 .

[0046] According to Figures 2-3 , it can be seen that the two weak light sources converge through the lens, and then form superposition at the focal point of the lens. The purpose is to ensure that the weak light source does not interfere before the light converges, and the overall layout is compact and beautiful. As can be seen, such a light path design can form a strong light source through the superposition of weak light sources.

[0047] As shown in Figure 1 , after the two light sources are aggregated, a concave lens is arranged at a point f2 before the light source convergence point. The focal length of the concave lens is f2. As can be seen from the optical circuit, the light entering the concave lens is fan-shaped, and the light emitted by the two weak light sources all enters the concave lens, so the light source utilization rate is high. After passing through the concave lens, the light path becomes parallel light.

[0048] Embodiment 2:

[0049] The present scheme also provides a detection device capable of improving the detection accuracy of fruit rot heart disease, which is used for the above-mentioned detection method, and comprises

[0050] The workbench 1, the light converging assembly 2, the parallel light assembly 3, the product fixing assembly 4 and the light receiving assembly 5.

[0051] The light converging assembly 2 is provided with at least two groups of convex lens units for converging the light source;

[0052] The parallel light assembly 3 is arranged before the light converging point of the light converging assembly 2, and is used for forming a parallel light beam;

[0053] The product fixing assembly 4 is arranged on the light emitting side of the parallel light assembly 3, and is used for fixing the fruit;

[0054] The light receiving assembly 5 is used for receiving the spectral information passing through the fruit.

[0055] As an optional embodiment of the present scheme, reference can be made to Figure 5The convex lens unit comprises a mounting module and a convex lens connected with the mounting module, the mounting module comprises a sliding groove 201, a mounting column 203 slidably connected in the sliding groove 201, an annular groove 202 is formed in the mounting column 203, a tooth ring is arranged on the outer periphery of the annular groove 202, a push-pull rod 204 is arranged at the annular groove 202 and slidably connected with the mounting column 203, a tooth plate is arranged on the side surface of the push-pull rod 204 and engaged with the tooth ring, and the convex lens is connected to the top end of the mounting column 203. By moving the push-pull rod 204, the mounting column 203 can be driven to rotate, so as to adjust the installation angle of the convex lens.

[0056] The above scheme can conveniently adjust the included angle between the convex lens and the light source, and facilitate adjustment and use according to the position of the light source.

[0057] The bottom end of the mounting column 203 is rotatably connected with a movable block, the movable block is slidably connected with the sliding groove 201, two groups of convex lens units are symmetrically arranged along the length direction of the workbench 201, the push-pull rods 204 in the two groups of convex lens units are connected through a connecting rod 205, and the connecting rod 205 can be extended and retracted along the width direction of the workbench 1.

[0058] Through the arrangement of the two groups of convex lenses, the light beams of multiple light sources can be converged, the light source intensity penetrating the fruits can be improved without increasing the power of the light sources, and the connecting rod 205 can be extended and retracted, so as to conveniently adjust the distance between the two convex lenses and adjust the convergence degree of the light beams.

[0059] Referring to Figures 6-7 In the scheme, the product fixing assembly 4 comprises a placing plate 401, a base plate 411 and a height adjusting module connecting the base plate 411 and the placing plate 401, the bottom of the base plate 411 is provided with a mounting module connected with the workbench 1, and the top of the placing plate 401 is provided with a positioning module for fixing fruits.

[0060] Through the above structure, the position of the fruits can be adjusted, the adjustment can be made according to actual needs, and the measurement structure is more accurate.

[0061] The height adjusting module comprises a base 413 fixed on the base plate 411, four adjusting columns 405 arranged in a rectangular shape, screw threads 414 corresponding to the adjusting columns 405 arranged in a rectangular shape on the base 413, the bottom ends of the adjusting columns 405 being screw-connected with the screw threads 414, the top portions of the adjusting columns 405 being rotationally connected with the placing plate 401, the middle portions of the adjusting columns 405 being sleeved with the gear rings 409, two parallel movable rods 403 being slidingly connected with the base 413, the two adjacent sides of the movable rods 403 being provided with the first racks, the side away from the movable rods 403 being provided with the second rack, the transmission gear 403 being rotationally installed between the two movable rods 403, the transmission gear 404 being engaged with the two first racks respectively, the second rack being engaged with the adjacent gear ring 409, and the two ends of the movable rods 403 being fixed with the hand rods 402.

[0062] The structure of the above scheme is convenient to operate and can quickly adjust the height of the fruits.

[0063] The installation module comprises the magnetic blocks 410 and the installation sliding seat 412, the installation sliding seat 412 is slidingly connected with the top surface of the base 1, the magnetic blocks 410 and the installation sliding seat 412 are fixed on the bottom surface of the base plate 411, and the top surface of the workbench 1 is provided with a magnetic layer capable of being magnetically attracted to the magnetic blocks 410.

[0064] Through the above arrangement, the position of the base plate 411 on the workbench 1 can be conveniently adjusted, and the selection can be made according to the actual needs.

[0065] The positioning module comprises at least two groups, the positioning module comprises the pressing plate 406, the stand column 407 and the columnar spring 408, the stand column 407 is vertically fixed on the top surface of the placing plate 401, one end of the pressing plate 406 is movably sleeved on the stand column 407, the columnar spring 408 is installed on the outer side of the stand column 407 between the pressing plate 406 and the placing plate 401, and the pressing plate and the placing plate 401 are used for placing fruits.

[0066] Through the above structure, the fruits can be clamped from above, the internal inspection of the fruits is not affected, the operation is fast and editing, and the work efficiency is improved.

[0067] The parallel light assembly 3 and the light receiving assembly 5 each comprise a connecting module, the connecting module comprises an adjusting groove 7 opened in the base 1 and a sliding block 8 slidingly installed in the adjusting groove 7, the sliding block 8 is fixed with a connecting rod 12, the connecting rod 12 is movably sleeved with a positioning ring 6, a return spring 11 is installed on the outer side of the connecting rod 12 between the sliding block 8 and the positioning ring 6, the two ends of the return spring 11 are connected with the sliding block 8 and the positioning ring 6 respectively, and the top end of the connecting rod 12 is used for being connected with the concave lens in the parallel light assembly 3 or the light receiver in the light receiving assembly 5.

[0068] The position of the concave lens or the position of the optical fiber receiver can be quickly adjusted through the connecting module

[0069] As a further improvement of the above-mentioned scheme, the top surface of the workbench 1 around the adjusting groove 7 is provided with a plurality of anti-skid protrusions 9, which can increase the friction between the positioning ring 6 and the top surface of the workbench 1.

[0070] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the protection scope of the present application, and any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the protection scope of the present application.

Claims

1. A method for improving the accuracy of detection of fruit mold heart disease, characterized by, It comprises the following steps: Two parallel weak light sources are formed into convergent light, and the two convergent lights are combined, and the combined light source passes through another concave lens to form a parallel light with uniform intensity, large amplitude and wide range, the parallel light passes through the fruit and is received by an optical fiber, and the fruit heart rot is detected by analyzing the spectral information; The detection method for improving the detection accuracy of fruit heart rot is realized by a detection device, and the detection device comprises a workbench, a light converging assembly provided with at least two groups of convex lens units for converging light sources; a parallel light assembly arranged before the converging point of the light converging assembly for forming a parallel light beam; a product fixing assembly arranged on the light emitting side of the parallel light assembly for fixing fruits; a light receiving assembly for receiving spectral information passing through the fruits; The convex lens unit comprises a mounting module and a convex lens connected with the mounting module, the mounting module comprises a sliding groove one, an installation column slidingly connected in the sliding groove one, an annular groove is formed in the installation column, a tooth ring is arranged on the outer circumferential side of the annular groove, a push-pull rod slidingly connected with the installation column is arranged at the annular groove, a tooth plate engaged with the tooth ring is arranged on the side surface of the push-pull rod, and the convex lens is connected to the top end of the installation column. The bottom end of the installation column is rotatably connected with a movable block, the movable block is slidingly connected with the sliding groove, and two groups of convex lens units are symmetrically arranged along the lengthwise centerline of the workbench, the push-pull rods in the two groups of convex lens units are connected by a connecting rod, and the connecting rod can be telescoped along the width direction of the workbench.

2. The method of claim 1, wherein the detection accuracy of the fruit mold heart disease is improved. The product fixing assembly comprises a placing plate, a base plate, and a height adjusting module connecting the base plate and the placing plate, the bottom of the base plate is provided with a mounting module connected with the workbench, and the top of the placing plate is provided with a positioning module for fixing fruits.

3. The method of claim 2, wherein the method improves the accuracy of detection of the fruit mold heart disease. The height adjusting module comprises a base, four adjusting columns distributed in a rectangular shape, the base is fixed on the base plate, the base is provided with screw grooves corresponding to the adjusting columns in a rectangular distribution, the bottom end of the adjusting column is screw-connected with the corresponding screw groove, the top of the adjusting column is rotatably connected with the placing plate, the middle part of the adjusting column is sleeved with a gear ring, two parallel movable rods are slidingly connected on the base, each of the two movable rods is provided with a gear rack one on the adjacent two sides, the movable rod is provided with a gear rack two away from one side, a transmission gear is rotatably installed between the two movable rods, the transmission gear is engaged with the two gear racks one respectively, the gear rack two is engaged with the adjacent gear ring, and hand-held rods are fixed at both ends of the movable rod.

4. The method of claim 3, wherein the method improves the accuracy of detection of the fruit mold heart disease. The mounting module comprises a magnetic block and a mounting sliding seat, the mounting sliding seat is slidingly connected with the top surface of the base, the magnetic block and the mounting sliding seat are fixed on the bottom surface of the base plate, and the top surface of the workbench is provided with a magnetic layer capable of being magnetically attracted to the magnetic block.

5. The method of claim 4, wherein the method improves the accuracy of detection of the fruit mold heart disease. The positioning module comprises at least two groups of pressure plates, vertical columns and columnar springs, the vertical column is vertically fixed on the top surface of the placing plate, one end of the pressure plate is movably sleeved on the vertical column, the columnar spring is installed on the outer side of the vertical column between the pressure plate and the placing plate, and the pressure plate and the placing plate are used to place fruits.

6. The method of claim 1, wherein the method improves the accuracy of detection of the fruit mold heart disease. The parallel light assembly and the light receiving assembly each comprise a connecting module, the connecting module comprises an adjusting groove opened on the base, a sliding block slidingly installed in the adjusting groove, a connecting rod fixed on the sliding block, a positioning ring movably sleeved on the connecting rod, a restoring spring installed on the outer side of the connecting rod between the positioning ring and the sliding block, and two ends of the restoring spring are connected with the sliding block and the positioning ring respectively, and the top end of the connecting rod is used for connecting with the concave lens in the parallel light assembly or the light receiver in the light receiving assembly.

7. The method of claim 6, wherein the method improves the accuracy of detection of the blue mold heart rot of fruits. The top surface of the workbench around the adjusting groove is provided with a plurality of anti-skid protrusions, and the anti-skid protrusions can increase the friction between the positioning ring and the top surface of the workbench.

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