JP2012159388A - Crop quality measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crop quality measuring apparatus that prevents a crop from being still on the upper surface of a light projection part or a light receiving part even when the crop falls from a conveyor part.SOLUTION: A crop quality measuring apparatus 1 comprises: a conveyor belt 31b; a light projection part 44; a light receiving part 46; and a light analysis part 48. The conveyor belt 31b conveys a crop. The light projection part 44 projects light to the crop conveyed by the conveyor belt 31b. The light receiving part 46 receives the transmitted light which is the light projected by the light projection part 44 and passing through the crop. The light analysis part 48 analyzes the transmitted light to measure the quality of the crop. The light projection part 44 is located below the conveyor belt 31b and has an inclined surface 44c, which is an inclined upper surface.

Description

  The present invention relates to a crop quality measuring apparatus for measuring the quality of crops.

  2. Description of the Related Art Conventionally, there are known devices that measure sugar content and the like contained in agricultural products such as fruits and vegetables in a non-destructive manner. This type of apparatus can measure the sugar content and the like contained in the crop by irradiating the crop with infrared light and analyzing the transmitted light. Patent documents 1 and 2 disclose this kind of crop nondestructive quality judging device.

  The crop nondestructive quality determination device disclosed in Patent Literature 1 includes a bread for placing a crop, a conveyor for transporting the bread, a light projecting unit, a light receiving unit, and an optical analysis unit. The light projecting unit is disposed below the conveyor. On the other hand, the light receiving unit is disposed above the conveyor and at a position facing the light projecting unit. A horizontal plate-like member is disposed between the conveyor and the light projecting unit. The plate-like member has a cutout at a position where the light projecting portion and the light receiving portion face each other.

  The light emitted from the light projecting unit passes through the notches and passes through the bread and the crop that are carried on the conveyor. The transmitted light that has passed through the crops or the like enters the light receiving unit. And the optical analysis part connected with the light-receiving part by the optical fiber etc. can measure the quality of the said crop by analyzing the light which permeate | transmitted the crop.

  The crop nondestructive quality determination device disclosed in Patent Document 2 includes a housing that is a box-shaped member in addition to the configuration of Patent Document 1. The housing is arranged so as to cover the light projecting unit and the light receiving unit. Since the light from the outside can be blocked by covering the light projecting portion and the like with the housing, the measurement accuracy can be improved. The housing is formed with an inlet opening and an outlet opening. The entrance opening is an opening for moving the crop and bread into the housing. The exit opening is an opening for moving the crops and bread that have been measured to the outside from the housing. Each opening is provided with a curtain for preventing light from entering the housing from the opening.

JP 2005-43315 A JP 2004-361347 A

  However, in the crop nondestructive quality determination apparatus having the above-described configuration, the crop may fall from the bread (that is, fall from the conveyor) due to, for example, an impact when transferring from another conveyor. Moreover, in the structure provided with a housing and a curtain as in Patent Document 2, when the crop passes through the curtain, the crop may be pushed by the curtain and the crop may fall from the pan. As described above, since a horizontal plate-like member is arranged below the conveyor, it is considered that crops from the bread fall on this plate-like member.

  The crop that has fallen on the plate-like member in this way is pushed by the bread flowing from the upstream and proceeds in the transport direction, and may fall from the above-mentioned notch to the light projecting portion. Then, if the fallen crop remains on the upper surface of the light projecting unit, the light projected from the light projecting unit is blocked by the farm product, and accurate quality measurement cannot be performed. For this reason, the worker has to remove the crop every time the crop is placed on the floodlight.

  The present invention has been made in view of the above circumstances, and its main purpose is to prevent the agricultural product from standing still on the upper surface of the light projecting unit or the light receiving unit even when the agricultural product falls from the transport unit. It is to provide a crop quality measuring device.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the viewpoint of this invention, the crop quality measuring apparatus of the following structures is provided. That is, the crop quality measuring apparatus includes a transport unit, a light projecting unit, a light receiving unit, and a measuring unit. The said conveyance part conveys agricultural products. The said light projection part irradiates light to the farm products conveyed by the said conveyance part. The light receiving unit receives transmitted light in which the irradiation light from the light projecting unit is transmitted through the crop, or reflected light in which the irradiation light is reflected by the crop. The measurement unit analyzes the transmitted light or the reflected light to measure the quality of the crop. At least one of the light projecting unit and the light receiving unit is disposed below the transport unit, and an upper surface is an inclined surface.

  Thereby, when the crop falls on the light projecting unit (or the light receiving unit), since the upper surface of the light projecting unit is an inclined surface, the crop that has fallen on the light projecting unit falls further downward due to its own weight. Therefore, since the agricultural product does not remain on the light projecting unit (or the light receiving unit), the frequency of occurrence of measurement errors can be reduced. Furthermore, it is possible to save the trouble of removing the crops remaining on the light projecting unit (or the light receiving unit).

  In the said crop quality measuring apparatus, it is preferable that the said inclined surface inclines so that it may become downward as it advances to the conveyance direction downstream of the said conveyance part.

  Thereby, the said crop can be smoothly dropped from an inclined surface using the force to the downstream of the conveyance direction which the crop which fell on the light projection part by the effect | action of a conveyance part has. Therefore, it is possible to quickly and reliably drop the crop that has fallen on the light projecting unit (or the light receiving unit).

  The crop quality measuring apparatus preferably has the following configuration. That is, this crop quality measuring apparatus includes a blower that generates an air flow. The blower generates an air flow on the inclined surface.

  Thereby, dust etc. can be prevented from accumulating on the inclined surface of the light projecting unit (or the light receiving unit). Accordingly, it is possible to prevent a decrease in measurement accuracy of the crop quality measuring device.

  The crop quality measuring apparatus preferably has the following configuration. That is, this crop quality measuring apparatus includes a contact member that is disposed above the inclined surface and upstream in the transport direction. The abutting member prevents the crop from falling onto the inclined surface by hitting the crop.

  Thereby, it can prevent itself that a crop falls to a light projection part (or light-receiving part). Therefore, the frequency of occurrence of measurement errors can be further reduced.

The perspective view which shows the structure of the crop quality measuring apparatus which concerns on one Embodiment of this invention. A side sectional view of a crop quality measuring device. The plane sectional view of the crop quality measuring device. Front sectional drawing of a crop quality measuring device. The expansion perspective view which shows the shape of an abutting member. The enlarged side view which shows the behavior of the crop which fell to the plate-shaped member. The enlarged side view which shows the behavior of the crop which fell to the light projection part.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a crop quality measuring apparatus 1 according to an embodiment of the present invention. FIG. 2 is a side cross-sectional view (a cross-sectional view taken along line AA in FIG. 3) of the crop quality measuring device 1. FIG. 3 is a plan cross-sectional view (a cross-sectional view taken along the line B-B in FIG. 2) of the crop quality measuring apparatus 1.

  The crop quality measuring device 1 is a device that can measure the sugar content and the like of this crop in a non-destructive manner by analyzing transmitted light obtained by irradiating the crop with infrared light. The agricultural product refers to fruits, vegetables, and the like, and includes, for example, strawberries, apples, tomatoes, eggplants, and the like. Hereinafter, a detailed configuration of the crop quality measuring apparatus 1 will be described.

  As shown in FIG. 1, the crop quality measuring device 1 includes a leg portion 11 and a pair of frames 12 a and 12 b supported by the leg portion 11. The frame 12 a and the frame 12 b are disposed so as to face each other, and the lower ends of the frames 12 a and 12 b are connected to each other by the plate-like member 13. The frames 12a and 12b are formed in an elongated shape, and the crop quality measuring apparatus 1 can transport crops from one side (upstream side) in the longitudinal direction of the frames 12a and 12b to the other side (downstream side). . In the following description, the upstream side and the downstream side in the conveyance direction of the crop may be simply referred to as “upstream side” and “downstream side”. Further, as shown in FIGS. 2 and 3, a measurement hole 13 a is formed at the center in the longitudinal direction of the plate-like member 13.

  As shown in FIGS. 1 to 3, the crop quality measuring device 1 is configured to transport crops, as shown in FIGS. 1 to 3, transport belts (transport units) 31 a and 31 b, a belt drive unit 32, a drive shaft 33, and a driven Shafts 34 to 37.

  Two conveyor belts 31a and 31b are arranged side by side along the longitudinal direction of the frames 12a and 12b. On the conveyor belts 31a and 31b, a bread 70 on which a crop 80 to be measured is set can be placed.

  As shown in FIGS. 1 and 2, the belt drive unit 32 is attached to the lower part of the frames 12a and 12b in the vicinity of the downstream ends of the frames 12a and 12b. The belt driving unit 32 includes a motor (not shown), and the conveyor belts 31a and 31b can be moved by the driving force of the motor. The driving force generated by this motor is first transmitted to the drive shaft 33. Further, as shown in FIG. 2, a driven shaft 37 is rotatably attached to the wall surface of the belt drive unit 32, which is obliquely above the upstream side of the drive shaft 33.

  A driven shaft 35 is rotatably attached between the pair of frames 12a and 12b and in the vicinity of the upstream end of the frames 12a and 12b. On the other hand, a driven shaft 34 is rotatably attached between the pair of frames 12a and 12b and in the vicinity of the downstream end of the frames 12a and 12b. As shown in FIG. 2, a driven shaft 36 is rotatably attached between the pair of frames 12 a and 12 b and slightly in front of the belt driving unit 32.

  Conveying belts 31 a and 31 b are wound around the drive shaft 33 and the driven shafts 34 to 37. Then, by rotating the drive shaft 33 in the direction shown in FIG. 2 by the driving force of the motor, the conveyor belts 31a and 31b can be moved in a direction in which the bread 70 and the crop 80 are moved from the upstream side to the downstream side.

  Next, the housing | casing 22 with which the crop quality measuring apparatus 1 is provided, and the structure of the inside are demonstrated with reference to FIGS. FIG. 4 is a front cross-sectional view (a cross-sectional view taken along the line CC in FIG. 2) of the crop quality measuring apparatus 1. Note that FIG. 4 is displayed with a larger scale than FIG. 2 and the like in order to make the figure easier to understand.

  The housing | casing 22 is a box-shaped member, and is arrange | positioned so that the conveyance direction center part of the crop quality measuring apparatus 1 may be covered as shown in FIG. Inside this housing 22, optical equipment (light projecting unit 44, light receiving unit 46, etc.) for measuring the quality of agricultural products, members for supporting them, and the like are arranged.

  As shown in FIGS. 1 and 2, an upstream opening 22 a is formed on the upstream surface of the housing 22. A downstream opening 22b is formed on the downstream surface at a position corresponding to the upstream opening 22a. The frames 12a and 12b and the conveyor belts 31a and 31b are arranged so as to pass through the upstream opening 22a and the downstream opening 22b. Further, a light shielding curtain 62 is attached to each of the upstream opening 22a and the downstream opening 22b. The light shielding curtain 62 is made of a flexible material, and has a plurality of cuts in the upper and lower sides. With this configuration, it is possible for the bread 70 and the crop 80 to pass through the openings 22a and 22b and to make it difficult for light to enter the inside of the housing 22.

  A fan (blower) 61 is attached to the side surface of the housing 22. The fan 61 is used to blow off dust or the like accumulated on the inclined surface 44c (described later) of the light projecting unit 44.

  Next, the internal configuration of the housing 22 will be described. As shown in FIGS. 2 and 3, the housing 22 includes a pair of pillar portions 24 a and 24 b extending upward from a horizontal surface 22 c formed inside the housing 22. As shown in FIGS. 2 and 4, the column portions 24 a and 24 b are connected to each other by a light projecting portion support plate 25 below the plate-like member 13. The column portions 24 a and 24 b are connected to each other by the light receiving portion support plate 27 above the plate-like member 13.

  As shown in FIGS. 2 and 4, a light projecting portion mounting member 26 is attached to the light projecting portion support plate 25. The light projecting portion mounting member 26 is an L-shaped member obtained by bending a single flat plate at a right angle. The light projecting portion mounting member 26 is attached to the light projecting portion support plate 25 (specifically, from the central portion of the light projecting portion support plate 25 to the vicinity of the end portion on the column portion 24a side) on one side of the L-shape. ing. A light projecting portion 44 and the like can be attached to one side and the other side of the L shape.

  On the other hand, as shown in FIGS. 2 and 4, a light receiving portion mounting member 28 is attached to the light receiving portion support plate 27. The light receiving portion mounting member 28 is an L-shaped member obtained by bending one flat plate at a right angle. The light receiving portion attachment member 28 is attached to the vicinity of the center portion of the light receiving portion support plate 27 on one side of the L shape. On the other hand, a light receiving portion 46 can be attached to the other side of the L-shape.

  Next, mainly with reference to FIG. 2, an optical device arranged inside the housing 22 will be described. As shown in FIG. 2, the crop quality measuring apparatus 1 includes a measurement case 41, a light source 42, optical fibers 43 and 47, a light projecting unit 44, a light shielding member 45, a light receiving unit 46, and an optical analysis unit ( Measuring unit) 48.

  The measurement case 41 is installed on the bottom surface of the housing 22, and includes a light source 42 that can emit infrared light, and an optical analysis unit 48 that analyzes light (transmitted light) that has passed through the crop 80. It has become. An optical fiber 43 is connected to the light source 42, and the optical fiber 43 connects the light source 42 and a light projecting unit 44 positioned above the light source 42.

  The light projecting unit 44 includes a lower light projecting unit 44a and an upper light projecting unit 44b. The lower light projecting portion 44a is attached to the one side of the light projecting portion mounting member 26 via a mounting member 29 having an inverted U-shaped cross section. The light from the light source 42 is emitted from the lower light projecting unit 44a toward the upper light projecting unit 44b. On the other hand, the upper light projecting portion 44 b is attached to the other side of the light projecting portion attaching member 26. The light from the lower light projecting unit 44a is emitted from the upper light projecting unit 44b toward the upper side (the light receiving unit 46 side). Note that the upper surface of the light projecting unit 44 (more precisely, the upper light projecting unit 44b) is an inclined surface 44c that is inclined so as to become lower as it goes downstream in the transport direction. The fan 61 blows wind on the inclined surface 44c to prevent dust and the like from accumulating on the inclined surface 44c.

  A light blocking member 45 is disposed between the lower light projecting unit 44a and the upper light projecting unit 44b. The light shielding member 45 is attached to the light projecting portion attachment member 26 via an attachment member (not shown). The light blocking member 45 includes a blocking position that blocks light emitted from the lower light projecting unit 44a so that the light is not incident on the upper light projecting unit 44b, and light emitted from the lower light projecting unit 44a. The position can be switched between a retracted position retracted from the blocking position so as not to enter the portion 44b.

  With this configuration, by appropriately switching the position of the light shielding member 45, light can be emitted toward the light receiving unit 46 only when the crop 80 passes above the light projecting unit 44.

  The light receiving unit 46 is attached to the other side of the light receiving unit mounting member 28 so as to face the light projecting unit 44 with the plate-like member 13 or the like interposed therebetween. As described above, the plate-like member 13 is formed with the measurement hole 13a at the location where the light projecting portion 44 and the light receiving portion 46 face each other. Therefore, the light receiving unit 46 can receive the transmitted light that has passed through the crop 80. The light receiving unit 46 is connected to an optical analysis unit 48 in the measurement case 41 via an optical fiber 47.

  The light analysis unit 48 can measure the sugar content of the crop by analyzing the transmitted light received by the light receiving unit 46. Specifically, since light of a predetermined wavelength in infrared light is absorbed according to the concentration of sucrose, by measuring how much the light of the predetermined wavelength is absorbed before and after passing through the fruit, The sucrose concentration (sugar content) of the fruit can be obtained. Further, due to the influence of the light shielding member 45, only light after passing through the crop 80 (light having low intensity) is incident on the optical analysis unit 48. Therefore, since no more than a predetermined amount of strong light is incident on the optical analysis unit 48, the burden on the optical analysis unit 48 can be reduced.

  Next, a configuration around the measurement hole 13a will be described with reference to FIGS. FIG. 5 is an enlarged perspective view showing the shape of the abutting member 50. FIG. 6 is an enlarged side view showing the behavior of the crop 80 dropped on the plate-like member 13. In FIG. 6 and FIG. 7 described later, the column portion 24b and the like are omitted for easy understanding of the drawing.

  The crop quality measuring apparatus 1 of the present embodiment includes a contact member 50 disposed in the vicinity of the measurement hole 13a in order to prevent the crop 80 from falling onto the light projecting unit 44. As shown in FIG. 5 and the like, the abutting member 50 includes a pair of attachment portions 50a and 50b, a connection portion 50c, and a protruding portion 50d.

  The interval between the mounting portions 50a and 50b is formed to be equal to the arrangement interval between the frames 12a and 12b. And the attachment part 50a is attached to the lower part of the flame | frame 12a, and the attachment part 50b is attached to the lower part of the flame | frame 12b. The attachment part 50a and the attachment part 50b are connected to each other by a connection part 50c formed in the lower part of the attachment parts 50a and 50b.

  In addition, a protruding portion 50d that protrudes upward is formed at the center of the connecting portion 50c (ie, below the measurement hole 13a). The protrusion 50d passes through the measurement hole 13a from below to above. As shown in FIG. 2, the protruding portion 50 d is disposed on the upstream side of the light projecting portion 44.

  Next, the effect of this abutting member 50 will be described. The abutting member 50 is for preventing the crop 80 from dropping onto the light projecting unit 44.

  This will be specifically described below. The crop 80 placed on the pan 70 may fall from the pan 70 onto the plate-like member 13 by contacting the light shielding curtain 62 when passing through the upstream opening 22a. In addition, it is also conceivable that the crop 80 falls from the pan 70 to the plate member 13 due to the spring when transferring from the other conveyor belt to the conveyor belts 31a and 31b. When the crop 80 has fallen on the plate-like member 13, as shown in FIG. 6A, the crop 80 is pushed by the pan 70 and moves downstream in the conveyance direction.

  For this reason, in the conventional configuration (a configuration in which the abutting member 50 is not provided), the crop may fall to the light projecting unit. As a result, if a crop remains on the light projecting unit, the light projected from the light projecting unit is hindered by the farm product, and appropriate measurement cannot be performed. For this reason, the worker has to remove the crop every time the crop is placed on the floodlight.

  In this regard, in this embodiment, even if the crop 80 falls on the plate-like member 13 and is pushed by the pan 70, the crop 80 contacts the contact member 50 before and after dropping from the measurement hole 13a. As a result, the crop 80 falls directly below the abutting member 50 (or bounces back to the abutting member 50 and is closer to the transport direction than the abutting member 50) (see FIG. 6B). Therefore, in the crop quality measuring apparatus 1 of the present embodiment, the crop 80 is hardly placed on the light projecting unit 44. Therefore, the measurement error can be prevented and the labor of the operator can be saved.

  Next, a case where the crop 80 has fallen on the light projecting unit 44 will be described with reference to FIG. FIG. 7 is an enlarged side view showing the behavior of the crop 80 that has fallen on the light projecting unit 44.

  As described above, since the crop quality measuring apparatus 1 of the present embodiment includes the contact member 50, the crop 80 can be prevented from falling on the light projecting unit 44. However, for example, as shown in FIG. 7A, when the crop 80 falls from the pan 70 while passing above the measurement hole 13a, the crop 80 may fall into the light projecting unit 44.

  In the present embodiment, in consideration of such a possibility, the upper surface of the light projecting unit 44 is configured to be the inclined surface 44c. Accordingly, the crop 80 that has fallen on the light projecting unit 44 easily rolls on the inclined surface 44c with its own weight and falls from the light projecting unit 44. As a result, the crop 80 can be prevented from staying on the light projecting unit 44, so that the measurement error can be prevented and the labor of the operator can be saved.

  Moreover, in this embodiment, the said inclined surface 44c is formed so that it may become low toward the conveyance direction of the agricultural products 80 by the conveyance belts 31a and 31b. In other words, the crop 80 that is pushed by the pan 70 and falls to the light projecting unit 44 often has a speed component toward the downstream side in the transport direction due to inertia. For this reason, on the inclined surface 44c of the light projecting unit 44, the crop 80 is placed on the light projecting unit 44 by setting the direction of the inclined surface 44c so as to be dropped toward the downstream side in the transport direction without killing the momentum. Can be reliably prevented.

  As described above, the crop quality measuring apparatus 1 according to this embodiment includes the transport belts 31a and 31b, the light projecting unit 44, the light receiving unit 46, and the light analyzing unit 48. The conveyor belts 31a and 31b convey the crop 80. The light projecting unit 44 irradiates the crop 80 conveyed by the conveyor belts 31a and 31b with light. The light receiving unit 46 receives the transmitted light that the irradiation light from the light projecting unit 44 has transmitted through the crop 80. The light analysis unit 48 analyzes the transmitted light and measures the quality of the crop 80. The light projecting unit 44 is disposed below the conveyor belts 31a and 31b and has an inclined surface 44c whose upper surface is inclined.

  Thereby, when the crop 80 falls to the light projecting unit 44, the top surface of the light projecting unit 44 is inclined, so that the crop 80 that has fallen on the light projecting unit 44 falls further downward due to its own weight. Therefore, since the crop 80 does not remain on the light projecting unit 44, the frequency of occurrence of measurement errors can be reduced. Further, it is possible to save the trouble of removing the crops remaining on the light projecting unit 44.

  Further, in the crop quality measuring apparatus 1 of the present embodiment, the inclined surface 44c is inclined so as to become downward as it proceeds to the downstream side in the conveying direction of the conveying belts 31a and 31b.

  Accordingly, the crop 80 is pushed by the pan 70 (conveyed by the conveyance belts 31a and 31b) and the crop 80 that has fallen on the light projecting unit 44 is used to move the crop 80 to the inclined surface 44c by using the momentum downstream in the conveyance direction. Can be dropped smoothly. Therefore, the crop 80 that has fallen on the light projecting unit 44 can be quickly and reliably dropped downward.

  Moreover, the crop quality measuring apparatus 1 of this embodiment includes a fan 61 that generates an air flow. The fan 61 generates an air flow on the inclined surface 44c.

  Thereby, it is possible to prevent dust and the like from accumulating on the inclined surface 44 c of the light projecting unit 44. Accordingly, it is possible to prevent a decrease in measurement accuracy of the crop quality measuring device 1.

  Moreover, the crop quality measuring apparatus 1 of this embodiment is provided with the contact member 50 arrange | positioned above the inclined surface 44c and the conveyance direction upstream. The contact member 50 prevents the crop 80 from falling onto the inclined surface 44 c by hitting the crop 80.

  Thereby, since the crop 80 itself can be prevented from falling on the light projecting unit 44, the frequency of occurrence of measurement errors can be further reduced.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  The shape of the contact member 50 is arbitrary as long as the crop 80 hits the crop 80 so that the crop 80 does not fall on the light projecting unit 44.

  In the above embodiment, the crop 80 is prevented from remaining on the light projecting unit 44 by providing the projecting member 50 and inclining the upper surface of the light projecting unit 44. For example, the projecting member 50 is provided. Even if it is a structure which is not, the effect of this invention can be exhibited to a certain extent.

  In the above embodiment, the light projecting unit 44 is provided below the transport belts 31a and 31b and the light receiving unit 46 is provided above, but the arrangement of the light projecting unit 44 and the light receiving unit 46 may be reversed. That is, the light is emitted downward from the light projecting unit disposed above the transport belt, and the light receiving unit disposed below the transport belt receives the light.

  In the above embodiment, the transmission type crop quality measurement device is used, but the present invention can be applied to a reflection type crop quality measurement device instead.

  The fan 61 is not limited to the arrangement shown above as long as dust and the like on the inclined surface 44c can be blown away, and can be arranged at an arbitrary position.

1 Agricultural product quality measuring device 31a, 31b Conveyor belt (conveyor)
44 Light Emitting Unit 44c Inclined Surface 47 Light Receiving Unit 48 Optical Analysis Unit (Measurement Unit)
50 abutting member 70 bread 80 crop

Claims (4)

A transport unit for transporting agricultural products;
A light projecting unit that irradiates the crops conveyed by the transport unit;
A light receiving unit that receives the transmitted light through which the irradiation light from the light projecting unit has passed through the crop, or the reflected light that is reflected from the crop by the irradiation light;
A measurement unit that analyzes the transmitted light or the reflected light to measure the quality of the crop;
With
At least one of the light projecting unit and the light receiving unit is disposed below the transport unit, and the top surface is an inclined surface. The crop quality measuring device according to claim 1,
The crop quality measuring apparatus according to claim 1, wherein the inclined surface is inclined so as to become downward as it proceeds downstream in the conveying direction of the conveying unit. The crop quality measuring device according to claim 1 or 2,
Equipped with a blower that generates airflow,
The crop quality measuring device, wherein the blower generates an air flow on the inclined surface. The crop quality measuring device according to any one of claims 1 to 3,
A contact member disposed above the inclined surface and upstream in the conveying direction;
The crop quality measuring device according to claim 1, wherein the abutting member prevents the crop from falling onto the inclined surface by hitting the crop.

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