JPH1183733A - Grade measuring instrument for grain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grade measuring instrument which can easily measure the quality information and sizes of grains one grain by one grain. SOLUTION: A grade measuring instrument is provided with a carrying means T which carries grains to be measured in a state where the grains are separated from each other, and a measuring means M which finds the quality information and sizes of the grains carried by means of the carrying means T one grain by one grain. The measuring means M is constituted to find the internal quality information and appearance quality information of the grains as the quality information, and provided with a light source section 6 which emits light upon the grains one grain by one grain while the grains are carried by means of the carrying means T, a light receiving section 8 which receives reflected light rays or transmitted light rays from the grains, and an arithmetic section 10 which finds the quality information and sizes of the grains based on the light rays received by means of the light receiving section 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the quality of a grain one by one.

[0002]

2. Description of the Related Art Conventionally, as a device for measuring the quality of grains one by one, a conveying means for conveying the grains to be measured in a state of being separated one by one; A grain quality measuring device provided with a quality measuring means for measuring quality information one by one, a conveying means for conveying the grains to be measured separated one by one, and a grain conveyed by the conveying means There has been a grain size measuring device provided with a size measuring means for measuring the size of the grain.

[0003]

There are cases where it is necessary to measure both the quality information and the size of each grain. For example, in rice centers that receive rice as an example of grain delivered from multiple producers and dry and store the grain, as a grain acceptance inspection, both the quality information and the size of each grain are used. Need to be measured. Conventionally, a grain quality measuring device as described above, and,
The quality information and size of each grain were measured using a grain size measuring device, but the work of transporting the grains to be measured in a state of being separated one by one for these measurements It is necessary to perform the measurement twice, and the measurement operation is troublesome and troublesome, so that improvement has been desired.

The present invention has been made in view of such circumstances, and an object of the present invention is to make it possible to easily measure quality information and size of each grain.

[0005]

According to the first aspect of the present invention, the grain to be measured is transported in a state of being separated one by one by the transporting means, and transported by the transporting means by the measuring means. The quality information and the size of the grain to be obtained are obtained one by one. Therefore, it is possible to measure both the quality information and the size of each grain by simply transporting the grain to be measured once in a state where the grains are separated one by one.

According to the second aspect of the present invention, the internal quality information and the appearance quality information of the grain are obtained by the measuring means as the quality information. In other words, as the quality information of the grain, there are internal quality information related to the components contained in the grain, and appearance quality information related to the appearance of the grain, and both of them can be obtained. The work of measuring the quality one by one can be further simplified.

[0007] Incidentally, when measuring the quality of rice as an example of grain, the internal quality information includes, for example, information on the amount of water, the amount of protein, and the amount of amylose contained in the grain, and information on taste. The taste here has a correlation with a sensory value when rice is cooked and eaten. The appearance quality information includes, for example, good quality grains, immature grains, damaged grains, colored grains, and dead rice.

According to the third aspect of the present invention, the light source unit irradiates light to each grain conveyed by the conveying means, and the light receiving unit reflects or transmits light from the kernel. Is received, and based on the light received by the light receiving portion,
The arithmetic unit obtains the quality information and the size of the grain. In other words, the measuring means irradiates light one grain at a time,
The system is configured to receive reflected light or transmitted light from a grain, and to obtain both quality information and a size of the grain based on the received light. By the way, as a measuring means, a device for obtaining the quality information of the kernel and a device for obtaining the size of the kernel are separately provided, or a light for measuring the quality information and a light for measuring the size are used. Irradiate each grain one by one, and receive the reflected light or transmitted light from the kernel based on the irradiated light separately, and separate the quality information and size based on the light received separately. It is assumed that the configuration is such that it is determined. However, in these cases, there is a disadvantage that the configuration of the measuring means is complicated. Therefore,
According to the characteristic configuration of the third aspect, the configuration of the measuring means can be simplified, so that the cost for implementing the present invention can be reduced.

According to the fourth aspect of the present invention, the spectral unit obtains the spectral spectrum of the light received by the light receiving unit, and the arithmetic unit correlates the quality information with the quality information to be obtained in the spectral spectrum obtained by the spectral unit. Quality information is required based on light having a measurement wavelength. That is, when the grain is irradiated with light, it exhibits an absorption characteristic at a wavelength (corresponding to a measurement wavelength) specific to the required quality information, according to the required quality information. Therefore, by providing a spectral unit that obtains the spectral spectrum of the light received by the light receiving unit, even if the items of the quality information to be obtained are different, from the spectral spectrum obtained by the spectral unit, measurement that has a correlation with each quality information item By obtaining light of the wavelength for use, quality information can be obtained. By the way,
It is assumed that the light source unit can be configured to be able to individually irradiate light having a measurement wavelength that is correlated with each item of quality information, but in general, even when measuring one item of quality information, Therefore, when quality information of a plurality of items is required, light of a large number of measurement wavelengths is required, and the configuration becomes complicated. Therefore, according to the characteristic configuration of the fourth aspect, the quality information of a plurality of items can be measured with a simple configuration.

According to a fifth aspect of the present invention, the arithmetic unit determines the size of the kernel based on a temporal change in the amount of light received by the light receiving unit. In other words, the time when the forward end of the grain transported by the transport unit enters the luminous flux of the light emitted from the irradiation unit, and the rear end in the travel direction of the kernel transported by the transport unit from the irradiation unit At each point in time when the light exits from the luminous flux of the irradiated light, the amount of light in the light received by the light receiving unit changes. Therefore, based on a temporal change in the amount of light in the light received by the light receiving unit, the transit time required for the kernel conveyed by the conveying unit to pass the light emitted from the irradiation unit can be obtained. The size of the kernel can be determined based on the time and the transport speed during which the kernel passes through the light emitted from the irradiation unit. Therefore, according to the characteristic configuration of claim 5,
A preferred concrete configuration for determining the size of a grain when determining both the quality information and the size of the grain while simplifying the configuration of the measuring means, as in the characteristic configuration according to claim 3 or 4. Can now be offered.

[0011] The speed at which the grains are conveyed while the grains pass the light irradiated from the irradiation section can be obtained as follows. For example, it can be obtained by configuring the conveying means to convey grains at a preset set speed, and storing the set speed in an arithmetic unit. In addition, it is possible to provide a speed detecting means for detecting the conveying speed of the grain, and obtain the grain based on the detection information of the speed detecting means.

[0012] According to the characteristic configuration of the sixth aspect, the arithmetic unit obtains moisture information relating to the amount of moisture contained in the grain, and corrects the determined size based on the determined moisture information. The size of the grain when dried is determined so that the set moisture information is obtained. In other words, when the grain is dried, the moisture content decreases and the size of the grain changes,
At that time, it is known that the moisture content and the grain size change while maintaining a substantially constant relative relationship. Therefore, the moisture information is obtained, the obtained water information, and based on the relative relationship, the obtained size is corrected, and the size of the grain when dried to become the set water information is estimated. You can do it.

In the above rice center, the grains are stored after being dried to an appropriate moisture content. Is required. On the other hand, in such a rice center, it is necessary to efficiently receive cereals delivered from a plurality of producers, and therefore, it is desired to quickly inspect the acceptance of cereals. However, in the past, it was necessary to dry the grain to be measured to a proper moisture content with a simple dryer for inspection, and then measure the grain size. Was desired.

[0014] On the other hand, according to the characteristic configuration of the present invention, when the undried kernels as delivered from the producer are measured and dried so as to have an appropriate moisture content. The size of the grain can be determined. Therefore, it is possible to quickly and easily determine the size of the grain when dried so as to have an appropriate water content, and it is particularly preferable to use the grain at a rice center or the like for acceptance inspection.

According to the seventh aspect of the present invention, the arithmetic unit determines the presence or absence of a body crack as appearance quality information in the quality information based on the amount of light in the light received by the light receiving unit. In other words, if there is a crack in the kernel, the light irradiated from the irradiation unit is irregularly reflected at the cracked portion, and the light amount in the light received by the light receiving unit changes. Based on this, it is possible to determine the presence or absence of a body crack. Therefore, it is possible to determine the size of the grain as well as the presence or absence of a crack in the body as appearance quality information in the quality information by simply transporting the grain to be measured once in a state where the grains are separated one by one. It became so.

According to the characteristic configuration of the present invention, the arithmetic unit determines the shellless kernel from which the shell has been removed based on the amount of light received by the light receiving unit, and determines the shellless kernel. For the grain, the quality information and size of the grain are obtained. In other words, between the shellless kernel with the shell removed and the shelled kernel without the shell removed, the state where the light irradiated from the irradiation unit is transmitted through the kernel or reflected by the kernel Are different,
Since the light amount of the light received by the light receiving unit is different, it is possible to determine the kernelless kernel based on the light amount of the light received by the light receiving unit. Then, based on the discrimination information, the quality information and the size can be obtained only for the shellless kernel, so that the measurement accuracy is prevented from being reduced due to the inclusion of the shelled kernel data in the measurement result. can do.

There is a case where a grain having a high moisture content which is undried as harvested is to be measured. Since such high-moisture content kernels are difficult to remove the shell,
Grains with shells are easily mixed. Conventionally, when measuring kernels with a high water content, it is necessary to remove shell-containing kernels mixed in the kernels to be measured before measurement, which makes the work complicated and improves Was desired. According to the characteristic configuration of claim 8, especially when a grain having a high moisture content is to be measured, it is not necessary to remove shell-containing grains mixed in the grain to be measured. This is suitable for simplifying the measurement operation.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, in which rice is measured as an example of grain. As shown in FIGS. 1 and 2, the grain quality measuring device includes a transport unit T as a transport unit that transports the kernels S from which husks have been removed by a peeling device (not shown) in a state of being separated one by one. And the grain S transported by the transport unit T
Measuring unit M as a measuring means for obtaining quality information and size of each particle, a display unit 15 for displaying the results obtained by the measuring unit M, and various measuring conditions and display units for the measuring unit M A setting unit 14 for instructing display items to be displayed on the display unit 15
And a sorting unit 16 for sorting the grains S discharged from the transport unit T based on the measurement information of the measuring unit M.

The transport section T includes a transparent and annular fixed plate 1 fixedly installed, a disk-shaped grain feed plate 2 rotatably supported with its outer peripheral portion overlapping the fixed plate 1, An electric motor 3 for rotating and driving the grain feed plate 2 is provided. Reference numeral 11 in FIG. 2 denotes a rotary encoder provided on the rotating shaft of the electric motor 3, and calculates a transport speed of the grain S transported by the transport unit T based on output information of the rotary encoder 11. It is configured in.

Further, the apparatus is provided with a sample supply unit 4 for storing grains in a state where the grains are received by the rotating grain feed plate 2.

The grain feed plate 2 is formed of a material that blocks light emitted from a light source unit 6 described later. Further, as shown in FIG. 3, the grain feed plate 2 is provided with a plurality of oval-shaped grain holding holes 2 a slightly larger than the outer shape of the grain S by being positioned at a portion overlapping the fixed plate 1. The grain feed plate 2 is formed at regular intervals in the circumferential direction of the grain feed plate 2 in a state where the respective longitudinal directions are along the circumferential direction of the grain feed plate 2. Note that one of the plurality of grain holding holes 2a is fitted with a reference filter 12 having a predetermined absorbance, and the other is fitted with a calibration filter 13 that allows passage of light of a predetermined wavelength. In this case, the spectral analysis accuracy of the measuring unit M described later is improved.

The grain S held in the grain holding hole 2a of the grain feed plate 2 is dropped onto the fixed plate 1 at a position overlapping the movement locus of the grain holding hole 2a in the grain feed plate 2. Hole 1a is formed. The sorting unit 5 is located below the discharge hole 1a of the fixed plate 1.

That is, when the grain feed plate 2 is driven to rotate by the electric motor 3, the grains stored on the grain feed plate 2 rotated by the sample supply unit 4 are separated by one grain in the longitudinal direction. Grain holding hole 2a facing in the circumferential direction of grain feed plate 2
And the kernel holding hole 2 received by the fixing plate 1
The sheet is transported while being held at a. Then, as described above, light from the light source unit 6 is applied to the grains S transported in a state of being separated by the transport unit T one by one, as described later, and transmitted light is received by the light receiving unit. 8 is received. Further, the grains S that are further conveyed after passing through the irradiation position of the light from the light source unit 6 fall from the grain holding holes 1 a of the fixed plate 1 and are supplied to the sorting unit 5. Sorted as described below.

The measuring section M guides the light emitted from the light source section 6 and the light emitted from the light source section 6 and irradiates the light to each grain S transported by the transport means T. Irradiation unit 7
And a light receiving unit 8 for receiving the transmitted light from the kernel S, and a spectral unit 9 for obtaining a spectral spectrum of the light received by the light receiving unit 8
And an arithmetic unit 10 for obtaining quality information and size of the grain S based on the spectral spectrum obtained by the spectral unit 9. In FIG. 2, the light from the light source unit 6 passes through the kernel S transported by the transport unit T and is incident on the spectroscopic unit 9 along the alternate long and short dash line. 4 illustrates an optical path.

The measuring section M will be described with reference to FIG. The light source unit 6 includes a tungsten-halogen lamp 6a that emits infrared light, and a lens 6b that shapes light from the tungsten-halogen lamp 6a into a parallel light beam.
It is constituted by. The irradiating unit 7 guides the light formed by the lens 6b, and irradiates the grain S conveyed in a state of being separated one by one by the conveying unit T so as to irradiate the light from the end face. It is composed of fiber. The irradiating unit 7 is configured to irradiate light with a diameter smaller than the grain length and width of the grain S.

The light receiving section 8 is arranged on the side opposite to the irradiation section 7 with respect to the grain feeding plate 2 so as to receive the light emitted from the irradiation section 7 and guide the received light to the spectral section 9. It is composed of the light receiving optical fiber described above. The light receiving section 8 is a grain S
Is configured to receive light on a light receiving surface having a diameter smaller than the grain length and width of the particles.

The irradiating section 7 is arranged so as to irradiate light in a direction intersecting with the thickness direction of the grain feeding plate 2 (corresponding to a direction orthogonal to the longitudinal direction of the grain S), and a light receiving section. Reference numeral 8 denotes a light-receiving surface which is arranged at a position slightly deviated from the center of the luminous flux of the light emitted from the irradiating section 7 in a state orthogonal to the thickness direction.

The spectroscopic section 9 has a reflecting mirror 9b for reflecting the light incident on the dark box 9a in a dark box 9a made of aluminum into which the light received by the light receiving section 8 is incident from an entrance hole 9e.
A concave diffraction grating 9c that spectrally reflects the light reflected by the reflecting mirror 9b; and an array-type light receiving element 9 that detects the light flux intensity for each wavelength spectrally reflected by the concave diffraction grating 9c.
d. The array-type light receiving element 9d receives the light spectrally reflected by the concave diffraction grating 9c at the same time for each wavelength and converts it to a signal for each wavelength and outputs the signal.

The operation unit 10 will be described. The arithmetic unit 10 is configured using a microcomputer, and basically processes an output signal from the array-type light receiving element 9d to generate an absorbance spectrum and a second derivative in a wavelength region of the absorbance spectrum. In addition to obtaining the value, the internal quality information and appearance quality information of the grain S are obtained as quality information based on the second derivative.

In addition, the calculation unit 10 calculates internal quality information based on the components contained in the grain S based on the following calculation formula (hereinafter referred to as a calibration formula). Y = K ₀ + K ₁ × A (λ ₁ ) + K ₂ × A (λ ₂ ) + K ₃ × A (λ ₃ ) where Y: internal quality information A (λ ₁ ), A (λ ₂ ), A (Λ ₃ ): second derivative of absorbance at measurement wavelength λ correlated with desired internal quality information K ₀ , K ₁ , K ₂ , K ₃ ... measured in a sufficiently large population Coefficient set by least squares method using measured values of absorbance and internal quality information

A specific calibration formula is set in the calculation unit 10 for each item of the internal quality information. That is, in the above calibration formula, measurement wavelengths λ ₁ , λ ₂ , λ ₃ ... And coefficients K ₀ , K ₁ , K ₂ , K ₃ ... Are set for each item of internal quality information. For example, when obtaining information on the water content, information on the protein content, information on the amylose content, and the taste evaluation value as the internal quality information, respectively, a measurement wavelength and a coefficient having a correlation are set.

In the wavelength range of 600 nm to 1000 nm, as shown in FIG. 4, the absorbance spectrum is shown according to good quality grains, immature grains, damaged grains, colored grains, and dead rice as appearance quality information. Therefore, based on the absorbance spectrum shown in FIG. 3, a specific measurement wavelength is set in advance for each of the good quality grain, the immature grain, the damaged grain, the colored grain, and the dead rice. Based on the second derivative of the absorbance at the wavelength, it is determined whether the grain S is a good grain, an immature grain, a damaged grain, a colored grain, or dead rice.

That is, the arithmetic unit 10 is configured to obtain quality information based on light of a measurement wavelength that is correlated with the quality information to be obtained in the spectral spectrum obtained by the spectroscopic unit 9.

Further, the arithmetic unit 10 determines the size of the grain S based on a temporal change in the amount of light in the light received by the light receiving unit 8, and calculates the quality based on the amount of light in the light received by the light receiving unit 8. As appearance quality information in the information, the presence or absence of a body crack is determined. Hereinafter, a method for determining the size of the grain S and a method for determining the presence or absence of a body crack will be described.

As the grain feed plate 2 rotates and the portion crossing the light beam of the light irradiated from the irradiation unit 6 changes, the amount of light in the light received by the light receiving unit 8 becomes as shown in FIG. It changes with time. In the present embodiment, the light amount of the light of the set wavelength in the spectral spectrum obtained by the spectroscopic unit 9 is used as the light amount of the light received by the light receiving unit 8 based on the output signal from the array type light receiving element 9d. It is configured to detect.

That is, the grain holding hole 2 in the grain feed plate 2
When the plate portion between the points a comes out of the luminous flux of the light emitted from the irradiating section 6, the light quantity sharply increases, and subsequently, when the leading end of the grain S in the traveling direction enters the luminous flux, the light quantity sharply decreases. Subsequently, when the trailing end of the grain S in the traveling direction comes out of the light beam, the light amount sharply increases, and subsequently, when the plate portion enters the light beam, the light amount sharply decreases. Then, such a change in the light amount corresponds to the fact that the kernel S sequentially passes through the irradiation position of the light from the irradiation unit 6, and (A), (B), and (C) in FIG.
It is repeated like ...

Therefore, based on the change in the amount of light as described above, the passage required for the front end in the traveling direction of the grain S to pass through the predetermined location and the rear end in the traveling direction of the grain S to pass through the predetermined location. You can ask for time. That is, the arithmetic unit 10 calculates the passing time based on the output signal from the array-type light receiving element 9d, and calculates the time when the grain S is passing through the light flux based on the output signal from the rotary encoder 11. Is determined, and the grain length of the kernel S is determined based on the determined transit time and the transport speed.

Further, when a grain length correction instruction is instructed from the setting unit 14, the obtained grain length is corrected based on the obtained moisture content, and the set moisture content set by the setting unit 14 is set. Determine the grain length when dried to a specific rate. For example, when a grain is dried, the grain length of the grain decreases proportionally as the moisture content decreases. Therefore, a proportionality coefficient when the grain length of the grain changes in proportion to the water content is stored in advance in the arithmetic unit 10 and the grain obtained based on the proportionality coefficient and the obtained water content is calculated. The length is corrected, and the grain length when dried to the set moisture content is determined. For example,
Appropriate moisture content (14-16%) for incoming grain at rice seita etc.
When the grain length after drying is necessary, the setting unit 14 issues a grain length correction instruction.

Further, when a crack is present in the grain S, the light is diffusely reflected at the cracked portion of the grain S while the light beam emitted from the irradiation section 6 is traversed by the cracked portion of the grain S. As shown in FIG. 5C, the amount of light in the light received by the light receiving unit 8 decreases in the part a. Arithmetic unit 10
Is based on an output signal from the array type light receiving element 9d.
The presence or absence of a decrease in the output signal while the grain S is passing through the light flux is detected to determine the presence or absence of a body crack.

As described above, the irradiation unit 7 irradiates light in a direction intersecting the thickness direction of the grain feed plate 2 so that the grain S is oblique to the longitudinal direction. By irradiating light from above, irregular reflection at the cracked portion of the body is promoted, and the accuracy of determining the presence / absence of a cracked body is improved. Further, the light receiving section 8 is arranged so that its light receiving surface is orthogonal to the thickness direction, so that the edge of the grain holding hole 2a of the grain feed plate 2 and the grain S
The amount of light received when receiving light that has passed through the transparent portion between the front end and the front end in the traveling direction is suppressed. That is, the light transmitted through the grain S is weak, and the array type light receiving element 9d
If the amount of the weak light is measured after receiving the strong light, the accuracy is reduced. Therefore, the decrease in the accuracy is suppressed.

The arithmetic unit 10 determines the shell-free kernel from which the shell has been removed based on the amount of light received by the light receiving unit 8, and calculates the shell-free kernel as described above. Calculation of the internal quality information, calculation of the grain length of the grain S, correction of the grain length, determination of any of good quality grains, immature grains, damaged grains, colored grains and dead rice, The determination of the presence or absence of a crack is executed. In other words, since the shell of the kernel is hard to transmit light, the shellless kernel is determined based on the fact that the amount of transmitted light transmitted through the shellless kernel is larger than the amount of transmitted light transmitted through the shelled kernel. Can be determined.

The arithmetic unit 10 is provided with a set number (for example, 500
), The internal quality information is calculated, the grain length of the kernel is calculated, the grain length is corrected, and any one of good grain, immature grain, damaged grain, colored grain and dead rice is calculated. And whether
The determination of the presence or absence of a body crack is executed. Note that the calculation of the internal quality information and the determination as to which of the high-quality grains, immature grains, damaged grains, colored grains and dead rice are performed a plurality of times for one grain, and the calculation is performed. The accuracy and the discrimination accuracy are improved.

Further, the arithmetic unit 10 controls the sorting unit 16 so as to sort the measured kernels according to a preset quality level. The quality level is set according to the internal quality information and the appearance quality information.

When the measurement for the number of installations is completed, the arithmetic unit 10 responds to the command from the setting unit 14 to set the average value of each item of the internal quality information, the average value of the grain length, and the high quality The ratio, etc. of each of the grains, immature grains, damaged grains, colored grains, dead rice, and cracked grains are obtained and displayed on the display unit 15. In addition, in accordance with a command from the setting unit 14, a frequency distribution corresponding to each item of the internal quality information and the grain length is obtained, and the obtained distribution is displayed on the display unit 15.

[Another Embodiment] Next, another embodiment will be described. (B) In the above embodiment, the case where the measuring unit M is configured to obtain both the internal quality information and the appearance quality information has been described. Alternatively, only one of the above may be determined.

(B) The specific configuration of the measuring section M is not limited to the configuration exemplified in the above embodiment, and various configurations are possible. For example, in the above embodiment, one internal measuring unit M is configured to obtain all of the internal quality information, the external quality information, and the size.
Instead of this, one for obtaining internal quality information and one for obtaining appearance quality information and size may be configured separately. In this case, those for obtaining the internal quality information are configured by using the spectroscopic analysis method as in the above embodiment, and those for obtaining the appearance quality information and the size are imaged by the imaging means and the imaging means. It can be configured using an image processing method provided with an image analyzing means for analyzing the image.

Alternatively, the component for which the size is to be obtained may be configured separately. In this case, the configuration may be made using a line sensor for length measurement.

(C) The irradiation direction of the light from the irradiation section 7 and the direction of the light receiving surface of the light receiving section 8 are not limited to the directions exemplified in the above embodiment. For example, the irradiation direction may be set in the thickness direction of the grain feed plate 2 and the direction of the light receiving surface may be set in a direction intersecting the thickness direction.
Alternatively, the irradiation direction may be set in the thickness direction, and the light receiving surface may be set in the thickness direction.

(D) The specific configuration of the transport section T is not limited to the configuration exemplified in the above embodiment, but various configurations are possible. For example, you may comprise with a belt conveyor.

(E) In the above-described embodiment, the case where the measuring unit M is configured to receive the transmitted light from the grain and disperse the received light has been described as an example. You may comprise so that the reflected light from a grain may be received and the received light may be disperse | distributed.

(F) In the above embodiment, the measuring unit M obtains a spectral spectrum by splitting the reflected light or transmitted light from the grain, and based on the spectral spectrum, emits the light of the measuring wavelength. The case where it is configured so as to obtain it has been exemplified. Alternatively, the kernel may be configured to irradiate the kernel with light having a wavelength for measurement by using an interference filter or the like and receive reflected light or transmitted light from the kernel.

(G) In the present invention, in addition to the rice exemplified in the above embodiment, various grains such as wheat can be measured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall schematic configuration of a grain quality measuring device.

FIG. 2 is a block diagram showing an overall configuration of a grain quality measuring device;

FIG. 3 is a view showing a plate surface of a grain feed plate;

FIG. 4 is a diagram showing an absorbance spectrum for each appearance quality information.

FIG. 5 is a diagram showing a temporal change in the amount of light in light received by a light receiving unit.

[Explanation of symbols]

 Reference Signs List 6 light source unit 8 light receiving unit 9 spectral unit 10 arithmetic unit M measuring unit T transport unit

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Susumu Morimoto 1-1-1 Hama, Amagasaki-shi, Hyogo Inside Kubota R & D Co., Ltd.

Claims (8)

[Claims] 1. A transport means for transporting grains to be measured in a state of being separated one by one, and a measuring means for obtaining quality information and size of the grains transported by the transport means one by one. Grain quality measuring device. 2. The method according to claim 1, wherein the measuring unit includes:
The grain quality measuring device according to claim 1, wherein the grain quality measuring device is configured to obtain the internal quality information and the appearance quality information of the grain. 3. A light source unit for irradiating light to each grain transported by the transport unit, a light receiving unit for receiving reflected light or transmitted light from the kernel, and receiving the light. The grain quality measuring device according to claim 1, further comprising an arithmetic unit that obtains quality information and a size of the grain based on light received by the unit. 4. A spectroscopic unit for obtaining a spectral spectrum of the light received by the light receiving unit, wherein the calculating unit is a light having a measuring wavelength correlated with quality information to be obtained in the spectral spectrum obtained by the spectral unit. 4. The grain quality measuring device according to claim 3, wherein the quality information is obtained based on the following. 5. The grain quality measurement according to claim 3, wherein the arithmetic unit is configured to obtain a grain size based on a temporal change in the amount of light received by the light receiving unit. apparatus. 6. The quality information determined by the arithmetic unit includes moisture information on the amount of moisture contained in the grain, and the arithmetic unit corrects the determined size based on the determined moisture information and sets the corrected size. 6. The grain quality measuring device according to claim 5, wherein the size of the grain when dried is determined to obtain moisture information. 7. The arithmetic unit according to claim 3, wherein the calculation unit determines presence or absence of a body crack as appearance quality information in quality information based on an amount of light in the light received by the light receiving unit. The grain quality measuring device according to any one of the preceding claims. 8. The arithmetic unit determines, based on the amount of light received by the light receiving unit, a shellless kernel from which the shell has been removed, and determines quality information of the kernel without the shell. The grain quality measuring device according to any one of claims 3 to 7, wherein the grain quality measuring device is configured to determine a grain size.