JP6708479B2 - Internal quality judgment system - Google Patents

Description

The present invention relates to an internal quality determination system for determining the internal quality of a measurement target such as agricultural products having large species such as mango and avocado.

2. Description of the Related Art An internal quality determination system that determines the internal quality of an object to be measured by irradiating the object to be measured with light and receiving the internal transmitted light and spectrally processing the transmitted light is known.

For example, in Patent Document 1 below, a conveyance unit that conveys an object to be measured so as to pass through an internal quality measurement point, a light projecting unit that radiates light so as to cross the object at an internal quality measurement point, and a crossing In an internal quality determination system including a light emitting and receiving means having a light receiving portion for receiving light transmitted in a direction, and a control means for analyzing the internal quality of the object to be measured based on the light received by the light emitting and receiving means, Appearance detection means for detecting appearance information of an object to be measured is provided at an appearance inspection measurement point on the upstream side in the transport direction from the internal quality measurement point, and the control device is based on size information of the object to be measured by the appearance detection means. Thus, it has been proposed to adjust the detection condition when detecting the internal quality information of the object to be measured by the light emitting and receiving means.

Specifically, in Patent Document 1, as an adjustment of the detection condition, an amount of light emitted and received when the light emitting and receiving means detects internal quality information of the object to be measured is adjusted (hereinafter, referred to as a first adjustment. And/or adjusting the relative positions of the light emitting unit and the light receiving unit and the measured object when the light emitting and receiving unit detects the internal quality information of the measured object (hereinafter referred to as the second Adjustment).

However, in the internal quality determination system described in Patent Document 1, when the object to be measured has large species such as mango and avocado, it is impossible to accurately determine the internal quality of the object to be measured due to the influence of the species. There was a problem.

More specifically, in consideration of the fact that the larger the object to be measured is, the smaller the amount of transmitted light is, the first adjustment is to increase the light projection intensity of the light projecting unit as the object to be measured is larger.

However, this first adjustment does not assume that the object to be measured has a large seed. Therefore, when the object to be measured has a large seed, the size of the object to be measured from the light projecting unit is increased. Even if the object to be measured is irradiated with an appropriate amount of light, most of the light will be blocked by the species of the object to be measured, and as a result, the light receiving unit will have a sufficient amount of light. It is possible that the light of the light does not reach.

In the second adjustment, the light projecting unit and the light receiving unit are integrally moved according to the size of the object to be measured, so that the object to be measured can be measured from the light projecting unit regardless of the size of the object to be measured. The light received by the light receiving part is transmitted to the part and transmitted through the object to be measured.

However, this second adjustment also does not assume that the object to be measured has a large seed, and therefore, when the object to be measured has a large seed, the light from the light projecting unit causes the light to be measured. However, most of the light that has entered the inside of the object to be measured is blocked by the species of the object to be measured, and as a result, a sufficient amount of light does not reach the light receiving part. Can happen.

Further, in Patent Document 2 below, a conveyance unit that conveys an object to be measured so as to pass through an internal quality measurement point, and a projection that irradiates light to the object to be measured from below the conveyance unit at the internal quality measurement point. In an internal quality determination system including an optical unit, a light receiving unit that receives light transmitted through the measured object, and a control unit that analyzes the internal quality of the measured object based on the light received by the light receiving unit, A size detecting means for detecting the size of the object to be measured at a size measuring point on the upstream side in the transport direction from the internal quality measuring point, and a chopping means arranged between the light projecting section and the object to be measured. The light receiving unit is configured to receive and integrate the transmitted light from the object to be measured at a light receiving timing synchronized with the chopping frequency of the chopping unit, and the control device detects the object to be measured detected by the size detecting unit. It is disclosed that the number of times of light reception of the light receiving means is determined according to the size of an object.

In view of the fact that the amount of transmitted light decreases when the object to be measured is large, the internal quality determination system described in Patent Document 2 increases the light reception integration time by the light receiving means when the object to be measured is large, and S When the object to be measured is small, the /N ratio is improved, and the light receiving integration time by the light receiving means is shortened to avoid mixing of directly reflected light from the periphery of the object to be measured.

Although Patent Document 2 shows a configuration in which the light receiving optical axis of the light receiving unit is inclined with respect to the light projecting optical axis from the light projecting unit, the Patent Document 2 also describes the object to be measured. No consideration is given to the deterioration of the accuracy of the internal quality judgment due to the species.

JP, 2002-174592, A JP-A-6-300680

The present invention has been made in view of such conventional technology, and has an internal portion that does not transmit light such as seeds, and can accurately determine the internal quality of each of a plurality of measurement objects of different sizes. The purpose is to provide an internal quality judgment system.

In order to achieve the above-mentioned object, the present invention has a plurality of transport trays arranged in series in the transport direction, and passes through a size detection region and an internal quality detection region downstream of the size detection region in the transport direction. As described above, a conveyance unit that conveys the measurement target, a size detection unit that detects size information of the measurement target in the size detection region, and internal quality information of the measurement target in the internal quality detection region An internal quality detection unit and a control device are provided, and the transport tray has a main surface on which an object to be measured can be placed and an opening which allows passage of measurement light is provided, and the internal quality detection unit is light projecting unit includes a light receiving unit and the mobile Organization, the light projecting portion is disposed from below the transport unit so as to project the measurement light to the measurement object through the opening, the light receiving portion Is a position above the measurement object placed on the conveyance tray and displaced from the center of the conveyance width direction of the measurement object to one side in the conveyance width direction, and the light receiving optical axis is conveyed with the downward direction as a reference. A first light receiving portion that is inclined to the other side in the width direction by a predetermined angle, and is displaced above the measurement target placed on the transfer tray and from the center of the transfer width direction of the measurement target to the other side in the transfer width direction. And a second light receiving portion whose light receiving optical axis is tilted to the one side in the conveyance width direction by the predetermined angle with the downward direction as a reference, the moving mechanism includes the first and second light receiving portions. The control device is configured to move in the vertical direction, and the control device operates the moving mechanism so that the first and second light receiving units are located at predetermined positions in the vertical direction based on the size information from the size detection unit. It is allowed, to provide an internal quality determination system configured to determine the internal quality of the based-out measurement object therein quality information detected by the front Symbol first and second light receiving portions.

Further, the present invention has a plurality of transport trays arranged in series in the transport direction, and measures the measurement object so as to pass through the size detection region and the internal quality detection region downstream of the size detection region in the transport direction. A conveying unit that conveys, a size detecting unit that detects size information of a measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, A control device, the transport tray has a main surface on which an object to be measured can be placed, and an opening which allows passage of measurement light is provided, and the internal quality detection unit includes a light projecting unit and a light receiving unit. And a moving mechanism, the light projecting unit is arranged so as to project measurement light from below the transport unit through the opening to the object to be measured, and the light receiving unit is mounted on the transport tray. At a position above the placed measurement object and displaced from the center of the conveyance width direction of the measurement object to one side in the conveyance width direction, the light receiving optical axis is a predetermined angle to the other side in the conveyance width direction with reference to the downward direction. The first light receiving portion inclined only by the angle, and the light receiving optical axis at a position above the measurement object placed on the conveyance tray and displaced from the center of the measurement object in the conveyance width direction to the other side in the conveyance width direction. Has a second light receiving portion that is tilted toward the one side in the conveyance width direction by the predetermined angle with reference to the downward direction, and the moving mechanism moves the first and second light receiving portions in the respective light receiving optical axis directions. The control device operates the moving mechanism so that the first and second light receiving units are located at predetermined positions in the light receiving optical axis direction based on the size information from the size detecting unit. And an internal quality determination system configured to determine the internal quality of a measurement object based on the internal quality information detected by the first and second light receiving units .

Further, the present invention has a plurality of transport trays arranged in series in the transport direction, and measures the measurement object so as to pass through the size detection region and the internal quality detection region downstream of the size detection region in the transport direction. A conveying unit that conveys, a size detecting unit that detects size information of a measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, A control device, the transport tray has a main surface on which an object to be measured can be placed, and an opening which allows passage of measurement light is provided, and the internal quality detection unit includes a light projecting unit and a light receiving unit. And a moving mechanism, the light projecting unit is arranged so as to project measurement light from below the transport unit through the opening to the object to be measured, and the light receiving unit is mounted on the transport tray. At a position above the placed measurement object and displaced from the center of the conveyance width direction of the measurement object to one side in the conveyance width direction, the light receiving optical axis is a predetermined angle to the other side in the conveyance width direction with reference to the downward direction. The first light receiving portion inclined only by the angle, and the light receiving optical axis at a position above the measurement object placed on the conveyance tray and displaced from the center of the measurement object in the conveyance width direction to the other side in the conveyance width direction. Has a second light receiving portion that is inclined toward the one side in the conveyance width direction with respect to the downward direction by the predetermined angle, and the moving mechanism moves the first and second light receiving portions in the conveyance width direction. The control device operates the moving mechanism such that the first and second light receiving units are located at a predetermined position in the transport width direction based on the size information from the size detection unit, and the first and second light receiving units are operated. And an internal quality determination system configured to determine the internal quality of the measuring object based on the internal quality information detected by the second light receiving unit .

Further, the present invention has a plurality of transport trays arranged in series in the transport direction, and measures the measurement object so as to pass through the size detection region and the internal quality detection region downstream of the size detection region in the transport direction. A conveying unit that conveys, a size detecting unit that detects size information of a measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, A control device, the measurement object can be placed on the transport tray, the internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism, the light projecting unit, The light receiving unit is arranged so as to project the measurement light from one side in the conveyance width direction onto the measurement object, and the light receiving unit is the other side in the conveyance width direction of the conveyance unit and the conveyance direction upstream side from the conveyance direction center of the measurement object. A light receiving optical axis disposed at a position displaced by a predetermined angle with respect to the conveying width direction toward the downstream side in the conveying width direction; and the other side of the conveying section in the conveying width direction and the measurement. A second light receiving unit which is arranged at a position displaced from the center of the object in the carrying direction to the downstream side in the carrying direction, and whose light-receiving optical axis is inclined toward the upstream side in the carrying direction by a predetermined angle with respect to the carrying width direction. The moving mechanism is configured to move the first and second light receiving portions in the conveyance width direction, and the control device causes the first and second light receiving portions to receive size information from the size detecting portion. The moving mechanism is operated so as to be located at a predetermined position in the conveyance width direction based on the above, and the internal quality of the measuring object is determined based on the internal quality information detected by the first and second light receiving units. Provide an internal quality judgment system .

Further, the present invention has a plurality of transport trays arranged in series in the transport direction, and measures the measurement object so as to pass through the size detection region and the internal quality detection region downstream of the size detection region in the transport direction. A conveying unit that conveys, a size detecting unit that detects size information of a measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, A control device, the measurement object can be placed on the transport tray, the internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism, the light projecting unit, The light receiving unit is arranged so as to project the measurement light from one side in the conveyance width direction onto the measurement object, and the light receiving unit is the other side in the conveyance width direction of the conveyance unit and the conveyance direction upstream side from the conveyance direction center of the measurement object. A light receiving optical axis disposed at a position displaced by a predetermined angle with respect to the conveying width direction toward the downstream side in the conveying width direction; and the other side of the conveying section in the conveying width direction and the measurement. A second light receiving unit which is arranged at a position displaced from the center of the object in the carrying direction to the downstream side in the carrying direction, and whose light-receiving optical axis is inclined toward the upstream side in the carrying direction by a predetermined angle with respect to the carrying width direction. The moving mechanism is configured to move the first and second light receiving units in respective light receiving optical axis directions, and the control device controls the first and second light receiving units from the size detecting unit. The moving mechanism is operated so as to be located at a predetermined position in the light receiving optical axis direction based on the size information, and the internal quality of the measuring object is determined based on the internal quality information detected by the first and second light receiving units. And an internal quality judgment system configured as described above .

Further, the present invention has a plurality of transport trays arranged in series in the transport direction, and measures the measurement object so as to pass through the size detection region and the internal quality detection region downstream of the size detection region in the transport direction. A conveying unit that conveys, a size detecting unit that detects size information of a measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, A control device, the measurement object can be placed on the transport tray, the internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism, the light projecting unit, The light receiving unit is arranged so as to project the measurement light from one side in the conveyance width direction onto the measurement object, and the light receiving unit is the other side in the conveyance width direction of the conveyance unit and the conveyance direction upstream side from the conveyance direction center of the measurement object. A light receiving optical axis disposed at a position displaced by a predetermined angle with respect to the conveying width direction toward the downstream side in the conveying width direction; and the other side of the conveying section in the conveying width direction and the measurement. A second light receiving unit which is arranged at a position displaced from the center of the object in the carrying direction to the downstream side in the carrying direction, and whose light-receiving optical axis is inclined toward the upstream side in the carrying direction by a predetermined angle with respect to the carrying width direction. The moving mechanism is configured to move the first and second light receiving units in the transport direction, and the control device causes the first and second light receiving units to detect size information from the size detection unit. An internal quality configured to operate the moving mechanism so as to be located at a predetermined position in the transport direction based on the internal quality information of the measuring object based on the internal quality information detected by the first and second light receiving units. Provide a judgment system .

According to the internal quality determination system of the present invention, the light receiving unit is movable in the predetermined direction by the moving mechanism, and based on the size information and the light receiving position data from the size detecting unit, the control device is When detecting the internal quality information of one measurement target, the light receiving unit determines the light receiving position to be positioned in the predetermined direction, and the light receiving unit is positioned at the light receiving position by the moving mechanism. Since it is configured to determine the internal quality of the one measurement object based on the internal quality information detected by the unit, the sizes of a plurality of measurement objects having large species such as mango and avocado are different. Even if it does, the internal quality of each of a plurality of measurement objects having different sizes can be accurately determined without requiring a complicated mechanism.

FIG. 1 is a schematic plan view of an internal quality determination system according to the first embodiment of the present invention. FIG. 2 is a schematic vertical sectional view in the internal quality detection region of the internal quality determination system taken along the line II-II in FIG. 1, in which the internal quality information of the measurement object of size “large” is detected. It shows the state. FIG. 3 is a schematic vertical sectional view corresponding to FIG. 2, and shows a state in which the internal quality information of the measurement object of size “small” is being detected. FIG. 4 is a schematic vertical sectional view in the internal quality detection region of the internal quality determination system according to the first modified example of the first embodiment, which detects internal quality information of the measurement object of size “large”. It shows the state. FIG. 5 is a schematic vertical cross-sectional view corresponding to FIG. 4, and shows a state in which internal quality information of the measurement object of size “small” is being detected. FIG. 6 is a schematic vertical sectional view in the internal quality detection region of the internal quality determination system according to the second modified example of the first embodiment, which detects internal quality information of the measurement object of size “large”. It shows the state. FIG. 7 is a schematic vertical cross-sectional view corresponding to FIG. 6, and shows a state in which the internal quality information of the measurement object of size “small” is being detected. FIG. 8 is a schematic plan view of the internal quality determination system according to the second embodiment of the present invention. FIG. 9 is a schematic cross-sectional view in the internal quality detection area of the internal quality determination system according to the second embodiment, showing a state in which the internal quality information of the measurement object of size “large” is detected. ing. FIG. 10 is a schematic cross-sectional view corresponding to FIG. 9, and shows a state in which the internal quality information of the measurement object of size “small” is being detected. FIG. 11 is a schematic cross-sectional view in the internal quality detection region of the internal quality determination system according to the first modification of the second embodiment, which detects internal quality information of the measurement object of size “large”. It shows the state. FIG. 12 is a schematic cross-sectional view corresponding to FIG. 11, and shows a state in which the internal quality information of the measurement object of size “small” is being detected. FIG. 13 is a schematic cross-sectional view in the internal quality detection region of the internal quality determination system according to the second modified example of the second embodiment, which detects internal quality information of the measurement object of size “large”. It shows the state. FIG. 14 is a schematic cross-sectional view corresponding to FIG. 13, and shows a state in which the internal quality information of the measurement object of size “small” is being detected.

Embodiment 1
Hereinafter, a preferred embodiment of an internal quality judging system according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a schematic plan view of an internal quality determination system 1A according to this embodiment.

As shown in FIG. 1, an internal quality determination system 1 according to the present embodiment detects size information of a transport unit 10 that transports a measurement target and a measurement target 300 that is transported by the transport unit 10. A size detection unit (not shown), an internal quality detection unit 30 that detects internal quality information of the measuring object 300, and a control device 100.

In the present embodiment, as shown in FIG. 1, the transport unit 10 includes a drive rotating body 11 such as a drive sprocket, a driven rotating body 12 such as a driven sprocket, the drive rotating body 11 and the driven rotating body. A first endless body 15(1) such as a chain wound on one side in the width direction of conveyance and a second endless body 15(1) wound on the other side in the width direction of conveyance of the drive rotor 11 and the driven rotor. An endless body 15(2) and a tray 20 having a main surface 21 on which the measurement object 300 is placed and supported and conveyed by the first and second endless bodies 15(1), 15(2). have.

The transport unit 10 transports the tray 20 with the main surface 21 facing upward, and the tray with the main surface 21 facing downward from the end of the transport area to the beginning of the transport area. And a return zone for carrying 20 back.

As shown in FIG. 1, the transport area has a size detection region 10B and an internal quality detection region 10C located downstream of the size detection region 10B in the transport direction, and the size detection unit is provided with the The size information of the measurement object 300 is detected in the size detection area 10B, and the internal quality detection unit 30 detects the internal quality information of the measurement object 300 in the internal quality detection area 10C.

As shown in FIG. 1, in the present embodiment, the transport area is further transported from a placement area 10A provided upstream of the size detection area 10B in the transport direction and from the internal quality detection area 10C. The sorting area 10D is provided on the downstream side in the direction.

The placement area 10A is a work area on which the measurement object 300 is placed on the main surface 21 of the tray 20, and the sorting area 10D is a measurement object on the main surface 21 of the tray 20 based on an internal quality determination result. This is an area for performing the sorting operation of the objects 300.

The size detection unit detects information about the size of the measurement object 300 conveyed by the conveyance unit 10.
The “size” of the measurement target includes a plane area or a height, and the size detection unit may have various forms such as a CCD camera and a photoelectric sensor.

FIG. 2 shows a schematic cross-sectional view taken along the line II-II in FIG.
As shown in FIG. 2, the internal quality detecting unit 30 includes a light projecting unit 31, a light receiving unit 35, and a moving mechanism 40 that moves the light receiving unit 35 in a predetermined direction.

The light projecting unit 31 is fixedly installed so as to project the measurement light toward the measurement object 300 located in the internal quality detection region 10C.
As shown in FIG. 2, in the present embodiment, the light projecting unit 31 is arranged so as to project the measurement light from below to above the transport unit 10.

Specifically, as shown in FIG. 2, the main surface 21 of the tray 20 on which the measurement target 300 is placed is provided with an opening 22 that allows passage of measurement light, and the light projecting unit 31. The measuring light projected from the above is irradiated onto the measuring object 300 from below through the opening 22.

As the light projecting unit 31, a halogen lamp, a xenon lamp, an LED lamp or the like that can emit light having a wavelength in the near infrared region is used.

The light receiving section 35 is arranged on the opposite side of the light projecting section 31 with the measurement object 300 interposed therebetween so as to receive the light transmitted through the measurement object 300.
As described above, in the present embodiment, the light projecting unit 31 projects the measurement light from below the transport unit 10 to above the transport unit 10. Therefore, the light receiving unit 35 causes the transport unit 10 to perform the measurement light. The upper part is arranged so as to be able to receive the transmitted light traveling from the lower part to the upper part.

More specifically, as shown in FIG. 2, the light receiving section 35 is oriented in the direction of the measurement object 300 in a state where the light receiving optical axis 35X is tilted by a predetermined tilt angle α with respect to the light projecting optical axis of the light projecting section 31. Thus, the field of view 35V of the light receiving unit 35 can cover the inside of the measurement object 300 as widely as possible while avoiding the seed of the measurement object 300.

The inclination angle α of the light receiving optical axis 35X with respect to the light projecting optical axis is determined based on the viewing angle of the light receiving unit 35, the size of the measuring object 300, the size of the seed of the measuring object 300, and the like. Is set automatically.

When a rear end of an optical fiber whose rear end is optically connected to the following spectroscopic device 70 is used as the light receiving unit 35, the viewing angle of the light receiving unit 35 is, for example, about 23°.
In such a configuration, the light receiving optical axis 35X of the light receiving unit 35 is tilted at an angle of, for example, 30° to 40°, preferably 35° with respect to the light projecting optical axis.

In the internal quality determination system 1A according to the present embodiment, as the light receiving unit 35, a first light receiving unit 35(1) that receives transmitted light from one side and the other side of the seed of the measurement object 300 in the conveyance width direction, respectively. ) And a second light receiving portion 35(2).

In this case, the light receiving optical axis 35(1)X of the first light receiving section 35(1) and the light receiving optical axis 35(2)X of the second light receiving section 35(2) are based on the light projecting optical axis. It is tilted symmetrically.

That is, the first light receiving section 35(1) is displaced from the center of the measurement object 300 in the conveyance width direction to one side in the conveyance width direction, and the light reception optical axis 35(1)X is based on the downward direction. While being inclined to the other side in the conveyance width direction by the predetermined angle α, the second light receiving unit 35(2) is at a position displaced from the center of the measurement target object 300 in the conveyance width direction to the other side in the conveyance width direction. The light receiving optical axis 35(2)X is tilted toward the one side in the conveyance width direction by the predetermined angle α with reference to the downward direction.

The moving mechanism 40 is configured to move the light receiving unit 35 in a predetermined direction.
In the present embodiment, the moving mechanism 40 is capable of moving the light receiving section 35 in a direction parallel to the light projecting axis of the light projecting section 31.

The moving mechanism 40 can take various forms as long as the light receiving unit 35 can be moved in a predetermined direction.
In the present embodiment, the moving mechanism 40 includes a cylinder 41 that is fixedly installed, and a piston 42 that can advance and retract with respect to the cylinder 41 in the predetermined direction. The light receiving portion 35 is supported by the free end portion of the light receiving portion 35 so that the light receiving portion 35 can move in the predetermined direction.

In addition, in the internal quality determination system 1A according to the present embodiment, as the moving mechanism 40, the first and second light receiving portions 35(1) and 35(2) are moved in the predetermined direction, respectively. It has second moving mechanisms 40(1) and 40(2).

Alternatively, a single moving mechanism 40 may be configured to integrally move the first and second light receiving portions 35(1), 35(2) in the predetermined direction.

The control device 100 determines the internal quality of the measuring object 300 based on the internal quality information detected by the light receiving unit 35.

As described above, in the present embodiment, the tip of the optical fiber is used as the light receiving section 35.
In this case, the internal quality determination system 1A includes a spectroscope 70 to which the rear end of the optical fiber is optically connected.

The spectroscopic device 70 disperses the transmitted light of the measurement object 300 received by the light receiving unit 35 to generate spectroscopic information such as a spectral signal.
Then, the control device 10 determines the internal quality of the measuring object 300 based on the spectroscopic information from the spectroscopic device 70.

That is, the control device 100 previously stores threshold value data relating to specific internal quality such as sugar content.
The control device 100 determines the internal quality of the measurement target object 300 based on the comparison between the spectral information of one measurement target object 300 and the threshold data received from the spectroscopic device 70.

The internal quality determination system 1A according to the present embodiment, as the spectroscopic device 70, includes first and second optical receivers 35(1) and 35(2) that are optically connected to each other. It has the second spectroscopic devices 70(1) and 70(2).

The control device 100 is further configured to control the operation of the moving mechanism 40 based on the size information from the size detection unit.

Specifically, the control device 100 stores in advance light receiving position data in which the light receiving position of the light receiving unit 35 in the predetermined direction is set according to the size of the measurement target 300.

For example, the control device 100 distinguishes the size of the measuring object 300 into two types, “large” and “small”, based on the size information from the size detection unit.
In this case, the light receiving position data has a “large” light receiving position and a “small” light receiving position.

Of course, it is also possible to distinguish the size of the measuring object 300 into three or more types, and the light receiving position data has a light receiving position set for each size of the measuring object 300 to be distinguished. To be done.

Here, a case where the control device 100 is configured to distinguish the size of the measuring object 300 into two types of “large” and “small” based on the size information from the size detection unit is described. The operation of the internal quality determination system 1A will be described as an example.

For example, it is assumed that the measurement object having the size “large” (hereinafter, referred to as the first measurement object 300(1)) reaches the size detection area 10B.
In this case, the control device 100 determines that the size of the first measurement object 300(1) is “large” based on the size information from the size detection unit.

The control device 100 indicates that the first measurement object 300(1) has reached the size detection area 10B, for example, by a signal from the size detection area position sensor 111 (see FIG. 1). recognize.

In this case, when it is detected that the first measurement object 300(1) has reached the internal quality detection region 10C by the transport unit 10, the control device 100 sets the light receiving unit 35 to the light receiving position data. The internal quality information from the light receiving unit 35 is input in the state of being positioned at the “large” light receiving position grasped based on the above, and the first measurement object 300(1) is input based on the internal quality information thus input. To determine the internal quality of

The control device 100 indicates that the first measurement object 300(1) has reached the internal quality detection area 10C, for example, a signal from the internal quality detection area position sensor 112 (see FIG. 1), Alternatively, it can be recognized by the elapsed time from the timing when the size detection area 10B is passed and the transport speed of the transport unit 10.

Here, at the “large” light receiving position, the visual field range 35V of the light receiving unit 35 is as much as possible while avoiding the seed 310 with respect to the first measurement object 300(1) having the size “large”. It is set to cover a large interior area (see Figure 2).

That is, the “large” light receiving position is a position that can receive as much transmitted light as possible from the “large” first measurement target 300(1).
The "large" light receiving position is determined by experiments or the like.

On the other hand, when the measurement object 300 having the size “small” (hereinafter, referred to as the second measurement object 300(2)) reaches the size detection area 10B, the control device 100 causes the size detection to be performed. The size of the second measurement object 300(2) is determined to be "small" based on the size information from the part.

In this case, when it is detected that the second measurement object 300(2) has reached the internal quality detection region 10C by the transport unit 10, the control device 100 sets the light receiving unit 35 to the light receiving position data. The internal quality information from the light receiving unit 35 is input in the state of being positioned at the “small” light receiving position determined based on the above, and the second measurement object 300(2) is input based on the thus input internal quality information. To determine the internal quality of

Here, at the “small” light receiving position, the visual field range 35V of the light receiving unit 35 is as much as possible while avoiding the seed 310 with respect to the second measurement object 300 (2) having the size “small”. It is set experimentally so that a large internal area can be covered.

FIG. 3 shows a schematic vertical cross-sectional view taken along the line II-II in FIG. 1 in a state where the second measurement target 300(2) having the size “small” is located in the internal quality detection region 10C.
In FIG. 3, the light receiving unit 35 in the state of being positioned at the “large” light receiving position is indicated by a solid line and the visual field range 35V at that time is shown by a broken line, and the light receiving unit in the state of being positioned at the “small” light receiving position. 35 and the field-of-view range 35V in that case are shown by the two-dot chain line.

As shown in FIG. 3, when the transmitted light is received from the second measurement object 300 (2) having the size “small” while the light receiving unit 35 remains in the light receiving position for “large”. Means that the seed 310 of the second measurement object 300(2) is included in the visual field range 35V (see the broken line) of the light receiving unit 35.
Therefore, the amount of transmitted light of the second measurement object 300(2) that can be received by the light receiving unit 35 decreases, and it becomes difficult to accurately determine the internal quality of the second measurement object 300(2).

In view of this point, in the present embodiment, when the second measuring object 300 (2) having the size “small” reaches the internal quality detection region 10C, the control device 100 causes the moving mechanism 40 to perform the above-mentioned operation. The light receiving unit 35 is moved to the “small” light receiving position (see the chain double-dashed line in FIG. 3), and then the transmitted light from the second measurement object 300(2) is received.

Therefore, as shown in FIG. 3, the light receiving unit 35 can receive as much transmitted light of the second measurement object 300(2) as possible, and the inside of the second measurement object 300(2) can be received. It is possible to accurately determine quality.
In the illustrated embodiment, the “small” light receiving position is a position that is moved downward by L along the projection optical axis as compared with the “large” light receiving position.

As described above, according to the internal quality determination system 1A according to the present embodiment, the light receiving unit 35 is moved in a predetermined direction (vertical direction in the present embodiment), which is a very simple structure. It is possible to allow the light receiving unit 35 to receive as much transmitted light as possible with respect to the measuring objects 300 of various sizes, and improve the accuracy of the internal quality of the measuring objects 300. be able to.

The predetermined direction, which is the moving direction of the light receiving unit 35, may be the light receiving optical axis direction of the light receiving unit 35 instead of the vertical direction along the light projecting optical axis.
FIG. 4 and FIG. 5 are schematic vertical sectional views of the internal quality detection region 10C in the internal quality determination system 1B according to the first modification in which the light receiving unit 35 is movable in the light receiving optical axis direction.

FIG. 4 shows a state in which the first measurement object 300(1) having a size of “large” is located in the internal quality detection region 10C, and the light receiving unit 35 is accordingly located in the “large” light receiving position. And the visual field range 35V of the light receiving unit 35 is indicated by a broken line.

On the other hand, FIG. 5 shows a state in which the second measurement object 300(2) having the size “small” is positioned in the internal quality detection region 10C, and the light receiving unit 35 is in the “large” light receiving position. The state of being positioned is shown by a solid line and the visual field range 35V at that time is shown by a broken line, and the state of the light receiving unit 35 being positioned at the "small" light receiving position and the visual field range 35V at that time are shown by a two-dot chain line. ing.
In the first modification 1B, the “small” light receiving position is a position that is moved downward by L along the light receiving optical axis as compared with the “large” light receiving position.

Also in the first modification 1B, the same effect as in the present embodiment can be obtained.

Further, the predetermined direction, which is the moving direction of the light receiving unit 35, may be replaced with the vertical direction along the light projecting optical axis and the light receiving optical axis direction, and may be the transport width direction.
6 and 7 are schematic vertical cross-sectional views of the internal quality detection region 10C in the internal quality determination system 1C according to the second modification in which the light receiving unit 35 is movable in the transport width direction.

FIG. 6 shows a state in which the first measurement object 300(1) having a size of “large” is located in the internal quality detection region 10C, and the light receiving unit 35 is accordingly located in the “large” light receiving position. And the visual field range 35V of the light receiving unit 35 is indicated by a broken line.

On the other hand, FIG. 7 shows a state in which the second measurement object 300(2) having the size “small” is located in the internal quality detection region 10C, and the light receiving unit 35 is in the “large” light receiving position. The state of being positioned is shown by a solid line and the visual field range 35V at that time is shown by a broken line, and the state of the light receiving unit 35 being positioned at the "small" light receiving position and the visual field range 35V at that time are shown by a two-dot chain line. ing.
In the second modified example 1C, the “small” light receiving position is a position that is moved outwardly by L in comparison with the “large” light receiving position.

Also in the second modified example 1C, the same effect as in the present embodiment can be obtained.

Preferably, the internal quality detection area 10C can be a dark room space covered by the shielding member 15.
With such a configuration, the influence of ambient light can be prevented as much as possible.

Further, as shown in FIG. 1, the internal quality determination systems 1A to 1C may further include a display unit 90 such as a monitor for displaying the internal quality determination result of one measurement object 300 by the control device 100. it can.

In this case, the control device 90 determines that one measurement target 300 is the sorting area 10D based on the signal from the sorting area position sensor 113 or the elapsed time from the passage of the internal quality detection area 10C and the transport speed of the transport unit 10. Is detected, the display unit 90 is configured to display the determination result of the one measurement object 300.

According to such a configuration, the worker can sort the one measurement object 300 based on the determination result displayed on the display unit 90.

Instead of this, the internal quality determination systems 1A to 1C are provided with a payout mechanism (not shown) for paying out the measurement object 300 from the transport mechanism 10 to the corresponding sorting position in the sorting area 10D, and the control device 100 is provided. However, it is also possible to operate the payout mechanism based on the determination result of the internal quality.

Embodiment 2
Hereinafter, another embodiment of the internal quality determination system according to the present invention will be described with reference to the accompanying drawings.
FIG. 8 shows a schematic plan view of the internal quality determination system 2A according to the present embodiment.
In the drawings, the same members as those in the first embodiment are designated by the same reference numerals, and the description thereof will be appropriately omitted.

The internal quality determination system 2A according to the present embodiment is arranged so that the light projecting unit 31 projects the measurement light toward the measurement object 300 from one side in the conveyance width direction of the measurement object 300. In the internal quality determination system 1A according to the first embodiment, the light receiving unit 35 is arranged on the other side of the measurement target 300 in the conveyance width direction so as to receive the transmitted light from the measurement target 300. It's different.

9 and 10, the first measurement object 300(1) having the size "large" and the second measurement object 300(2) having the size "small" are present in the internal quality detection region 10C, respectively. The schematic cross-sectional view of the said internal quality detection area|region 10C in the state where it is located is shown.

FIG. 9 shows a state in which the light receiving unit 35 is positioned at the “large” light receiving position in accordance with the first measurement object 300(1) having the size “large”, and the visual field range at that time. 35V is indicated by a broken line.

On the other hand, FIG. 9 shows a state in which the light receiving unit 35 is still positioned at the “large” light receiving position with a solid line and a visual field range 35V at that time with a broken line. The state of being positioned at and the field-of-view range 35V at that time are indicated by a two-dot chain line.

In the present embodiment, the first light receiving unit 35(1) is on the opposite side of the light projecting unit 31 with respect to the measurement object 300 in the conveyance width direction and in the conveyance direction. The light receiving optical axis 35(1)X is arranged so as to be inclined to the downstream side in the transport direction by the predetermined angle α with the transport width direction as a reference in a state of being displaced from the center in the transport direction to the upstream side.

On the other hand, the second light receiving unit 35(2) is on the opposite side of the light projecting unit 31 with the measurement object 300 sandwiched in the conveyance width direction, and downstream in the conveyance direction from the conveyance direction center of the measurement object 300. The light receiving optical axis 35(2)X is disposed so as to be inclined toward the upstream side in the transport direction by the predetermined angle α with the transport width direction as a reference in a state of being displaced to the side.

In the present embodiment, the predetermined direction in which the light receiving unit 35 can be moved by the moving mechanism 40 is the conveyance width direction.

Specifically, in the case of the first measurement object 300(1) having the size “large”, in the control device 100, the light receiving unit 35 is located at the “large” light receiving position, as shown in FIG. 9. Thus, the moving mechanism 40 is operated.

Here, the “large” light receiving position is from the first measurement object 300(1) while preventing the seeds of the first measurement object 300(1) from entering the visual field range 35V of the light receiving unit 35. It is set at a position where as much transmitted light as possible can be received.

On the other hand, when the light receiving unit 35 is left at the “large” light receiving position (see the solid line in FIG. 10) with respect to the second measurement target 300 (2) having the size “small”, the light receiving is performed. A region out of the second measurement target 300(2) in the visual field range 35V of the portion 35 (see the broken line in FIG. 10) expands, and the amount of transmitted light received from the second measurement target 300(2) decreases. ..

Therefore, in the present embodiment, when it is determined that the size of the measurement object 300 is “small”, the control device 100 causes the light receiving unit 35 to receive the “small” light receiving position (see FIG. 10). The moving mechanism 40 is operated so as to move to the two-dot chain line).

Here, the light receiving position for “small” (see the chain double-dashed line in FIG. 10) is the seed of the second measurement object 300(2) within the visual field range 35V of the light receiving unit 35 (see the chain double-dashed line in FIG. 10). Is set so that the light receiving section 35 can receive as much transmitted light from the second measurement object 300(2) as possible.
Note that, in the present embodiment, as shown in FIG. 10, the “small” light receiving position moves by L in the direction away from the measuring object 300 in the transport width direction as compared with the “large” light receiving position. It is supposed to be the position.

As described above, according to the internal quality determination system 2A according to the present embodiment, the light receiving unit 35 is moved in the predetermined direction (the carrying width direction along the light projecting optical axis in the present embodiment). With such an extremely simple configuration, the light receiving unit 35 can receive as much transmitted light as possible for the measurement objects 300 of various sizes, and the inside of the measurement objects 300 of various sizes can be obtained. The accuracy of quality can be improved.

The predetermined direction, which is the moving direction of the light receiving unit 35, may be set to the light receiving optical axis direction of the light receiving shaft 35 instead of the conveyance width direction.
11 and 12 are schematic cross-sectional views of the internal quality detection area 10C in the internal quality determination system 2B according to the first modification in which the light receiving unit 35 is movable in the light receiving optical axis direction.

FIG. 11 shows a state in which the first measurement object 300(1) having the size “large” is located in the internal quality detection region 10C, and the light receiving unit 35 is located at the “large” light receiving position accordingly. And the visual field range 35V is indicated by a broken line.

On the other hand, FIG. 12 shows a state in which the second measurement object 300(2) having the size “small” is positioned in the internal quality detection region 10C, and the light receiving unit 35 is in the “large” light receiving position. The state in which it is still positioned is shown by a solid line and the visual field range 35V at that time is shown by a broken line, and the state where the light receiving unit 35 is positioned at the “small” light receiving position and the visual field range 35V at that time are shown by a two-dot chain line. ing.

In the first modification 2B, the “small” light receiving position is a position moved by L in the direction away from the measuring object 300 along the light receiving optical axis as compared with the “large” light receiving position. ing.

Also in the first modification 2B, the same effect as in the present embodiment can be obtained.

Further, the predetermined direction, which is the moving direction of the light receiving unit 35, may be the carrying direction instead of the carrying width direction and the light receiving optical axis direction.
13 and 14 are schematic cross-sectional views of the internal quality detection area 10C in the internal quality determination system 2C according to the second modification in which the light receiving unit 35 is movable in the transport direction.

FIG. 13 shows a state in which the first measurement object 300(1) having a size of “large” is located in the internal quality detection region 10C, and the light receiving unit 35 is accordingly located in the “large” light receiving position. And the visual field range 35V is indicated by a broken line.

On the other hand, FIG. 14 shows a state in which the second measuring object 300(2) having the size “small” is positioned in the internal quality detection region 10C, and the light receiving unit 35 is in the “large” light receiving position. The state in which it is still positioned is shown by a solid line and the visual field range 35V at that time is shown by a broken line, and the state where the light receiving portion 35V is positioned at the "small" light receiving position and the visual field range 35V at that time are shown by a two-dot chain line. ing.

In the second modified example 2C, the “small” light receiving position of the first light receiving portion 35(1) is set to a position moved by L toward the downstream side in the transport direction as compared with the “large” light receiving position. The light receiving position for "small" of the second light receiving portion 35(2) is a position moved by L toward the upstream side in the transport direction as compared with the light receiving position for "large".

Also in the second modified example 2C, the same effect as in the present embodiment can be obtained.

Preferably, as shown in FIGS. 8 to 14, the transport section 10 has an opening 82 that allows the measurement light from the light projecting section to be projected onto the measurement target, and It is possible to provide a shielding plate 80 that prevents the measurement light from the light projecting unit 31 from directly entering the light receiving unit 35.

By providing the shielding plate 80, the proportion of the amount of transmitted light in the light received by the light receiving unit 35 can be increased, and the influence of ambient light can be prevented as much as possible.

More preferably, the shielding plate 80 is arranged so as to come into contact with the outer surface of the largest measurement object 300 among the assumed measurement objects 300.
By providing such a configuration, it is possible to minimize the amount of light reflected from the light projecting unit 31 that passes through the opening 82 of the shielding plate 80 and that does not pass through the measurement target 300. it can.

In addition, in each of the above-described embodiments, the tip of the optical fiber whose rear end is optically connected to the spectroscopic device 70 acts as the light receiving unit, but the present invention is not limited to such a form. It is also possible to make a hyperspectral camera or a multispectral camera act as the light receiving unit. In this case, the spectroscopic device 70 is omitted.

10 Conveyance Section 10B Size Detection Area 10C Internal Quality Detection Area 20 Tray 22 Opening 30 Internal Quality Detection Section 31 Light Projection Section 35(1) First Light Reception Section 35(2) Second Light Reception Section 35X Light Reception Optical Axis 35V Field-of-view range 40(1) First moving mechanism 40(2) Second moving mechanism 80 Shielding plate 82 Opening 100 Control device

Claims (6)

A transport unit having a plurality of transport trays arranged in series in the transport direction, and a transport unit that transports the measurement object so as to pass through the size detection region and the internal quality detection region on the downstream side in the transport direction from the size detection region, A size detection unit that detects size information of the measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, and a control device,
The transport tray has a main surface on which an object to be measured can be placed and an opening which allows passage of measurement light is provided.
The internal quality detection unit, the light projecting unit includes a light receiving unit and the mobile Organization,
The light projecting unit is arranged so as to project the measurement light from below the transport unit through the opening to the measurement object.
The light-receiving unit is located above the measurement target placed on the transport tray and at a position displaced from the center of the measurement target in the transport width direction to one side in the transport width direction. And a first light receiving portion inclined to the other side in the conveyance width direction by a predetermined angle, and the other side in the conveyance width direction above the measurement object placed on the conveyance tray and from the center in the conveyance width direction of the measurement object. And a second light receiving portion in which the light receiving optical axis is tilted toward the one side in the conveyance width direction by the predetermined angle at the position displaced to
The moving mechanism is configured to move the first and second light receiving portions in the vertical direction,
The control device actuates the moving mechanism such that the first and second light receiving portion is positioned in the vertical direction by a predetermined position based on the size information from the size detection unit, before Symbol first and second light receiving internal quality determination system, characterized by determining the internal quality of the based-out measurement object therein quality information detected by the parts. A transport unit having a plurality of transport trays arranged in series in the transport direction, and a transport unit that transports the measurement object so as to pass through the size detection region and the internal quality detection region on the downstream side in the transport direction from the size detection region, A size detection unit that detects size information of the measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, and a control device,
The transport tray has a main surface on which an object to be measured can be placed and an opening which allows passage of measurement light is provided.
The internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism,
The light projecting unit is arranged so as to project the measurement light from below the transport unit through the opening to the measurement object.
The light receiving unit is located above the measurement target placed on the transport tray and at a position displaced from the center of the measurement target in the transport width direction to one side in the transport width direction, and the light receiving optical axis is based on the downward direction. And a first light receiving portion inclined to the other side in the conveyance width direction by a predetermined angle, and the other side in the conveyance width direction above the measurement object placed on the conveyance tray and from the center in the conveyance width direction of the measurement object. And a second light receiving portion in which the light receiving optical axis is tilted toward the one side in the conveyance width direction by the predetermined angle at the position displaced to
The moving mechanism is configured to move the first and second light receiving units in respective light receiving optical axis directions,
The control device operates the moving mechanism such that the first and second light receiving units are located at predetermined positions in the light receiving optical axis direction based on the size information from the size detecting unit, and the first and second light receiving units are operated. inner part quality determination system that is characterized in that determining the internal quality of the measurement object on the basis of internal quality information detected by the light receiving unit. A transport unit having a plurality of transport trays arranged in series in the transport direction, and a transport unit that transports the measurement object so as to pass through the size detection region and the internal quality detection region on the downstream side in the transport direction from the size detection region, A size detection unit that detects size information of the measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, and a control device,
The transport tray has a main surface on which an object to be measured can be placed and an opening which allows passage of measurement light is provided.
The internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism,
The light projecting unit is arranged so as to project the measurement light from below the transport unit through the opening to the measurement object.
The light receiving unit is located above the measurement target placed on the transport tray and at a position displaced from the center of the measurement target in the transport width direction to one side in the transport width direction, and the light receiving optical axis is based on the downward direction. And a first light receiving portion inclined to the other side in the conveyance width direction by a predetermined angle, and the other side in the conveyance width direction above the measurement object placed on the conveyance tray and from the center in the conveyance width direction of the measurement object. And a second light receiving portion in which the light receiving optical axis is tilted toward the one side in the conveyance width direction by the predetermined angle at the position displaced to
The moving mechanism is configured to move the first and second light receiving units in the conveyance width direction,
The control device operates the moving mechanism so that the first and second light receiving units are located at a predetermined position in the transport width direction based on the size information from the size detection unit, and the first and second light receiving units are operated. inner part quality determination system that characterized that you determine internal quality of the measurement object on the basis of internal quality information detected by the parts. A transport unit having a plurality of transport trays arranged in series in the transport direction, and a transport unit that transports the measurement object so as to pass through the size detection region and the internal quality detection region on the downstream side in the transport direction from the size detection region, A size detection unit that detects size information of the measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, and a control device,
An object to be measured can be placed on the carrier tray,
The internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism,
The light projecting unit is arranged so as to project the measurement light from one side in the transport width direction of the transport unit to the measurement object,
The light receiving unit is arranged on the other side in the conveyance width direction of the conveyance unit and at a position displaced from the center of the conveyance direction of the measurement object to the upstream side in the conveyance direction, and the light reception optical axis conveys the conveyance width direction as a reference. A first light receiving portion inclined to the downstream side in the direction by a predetermined angle, and a first light receiving portion disposed on the other side in the transport width direction of the transport portion and displaced from the center of the transport direction of the measurement object to the downstream side in the transport direction, and receive light. An optical axis having a second light receiving portion inclined by a predetermined angle to the upstream side in the transport direction with reference to the transport width direction,
The moving mechanism is configured to move the first and second light receiving units in the conveyance width direction,
The control device operates the moving mechanism so that the first and second light receiving units are located at a predetermined position in the conveyance width direction based on the size information from the size detection unit, and the first and second light receiving units are operated. inner part quality determination system that characterized that you determine internal quality of the measurement object on the basis of internal quality information detected by the parts. A transport unit having a plurality of transport trays arranged in series in the transport direction, and a transport unit that transports the measurement object so as to pass through the size detection region and the internal quality detection region on the downstream side in the transport direction from the size detection region, A size detection unit that detects size information of the measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, and a control device,
An object to be measured can be placed on the carrier tray,
The internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism,
The light projecting unit is arranged so as to project the measurement light from one side in the transport width direction of the transport unit to the measurement object,
The light receiving unit is arranged on the other side in the conveyance width direction of the conveyance unit and at a position displaced from the center of the conveyance direction of the measurement object to the upstream side in the conveyance direction, and the light reception optical axis conveys the conveyance width direction as a reference. A first light receiving portion inclined to the downstream side in the direction by a predetermined angle, and a first light receiving portion disposed on the other side in the transport width direction of the transport portion and displaced from the center of the transport direction of the measurement object to the downstream side in the transport direction, and receive light. An optical axis having a second light receiving portion inclined by a predetermined angle to the upstream side in the transport direction with reference to the transport width direction,
The moving mechanism is configured to move the first and second light receiving units in respective light receiving optical axis directions,
The control device operates the moving mechanism so that the first and second light receiving units are located at predetermined positions in the light receiving optical axis direction based on the size information from the size detecting unit, and the first and second moving units are operated. inner part quality determination system that characterized that you determine internal quality of the measurement object on the basis of internal quality information detected by the light receiving unit. A transport unit having a plurality of transport trays arranged in series in the transport direction, and a transport unit that transports the measurement object so as to pass through the size detection region and the internal quality detection region on the downstream side in the transport direction from the size detection region, A size detection unit that detects size information of the measurement target in the size detection region, an internal quality detection unit that detects internal quality information of the measurement target in the internal quality detection region, and a control device,
An object to be measured can be placed on the carrier tray,
The internal quality detection unit has a light projecting unit, a light receiving unit, and a moving mechanism,
The light projecting unit is arranged so as to project the measurement light from one side in the transport width direction of the transport unit to the measurement object,
The light receiving unit is arranged on the other side in the conveyance width direction of the conveyance unit and at a position displaced from the center of the conveyance direction of the measurement object to the upstream side in the conveyance direction, and the light reception optical axis conveys the conveyance width direction as a reference. A first light receiving portion inclined to the downstream side in the direction by a predetermined angle, and a first light receiving portion disposed on the other side in the transport width direction of the transport portion and displaced from the center of the transport direction of the measurement object to the downstream side in the transport direction, and receive light. An optical axis having a second light receiving portion inclined by a predetermined angle to the upstream side in the transport direction with reference to the transport width direction,
The moving mechanism is configured to move the first and second light receiving units in the transport direction,
The control device operates the moving mechanism so that the first and second light receiving units are located at a predetermined position in the transport direction based on the size information from the size detection unit, and the first and second light receiving units are operated. inner part quality determination system that characterized that you determine internal quality of the measurement object on the basis of internal quality information detected by the.

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