JP2020190527A - Rice component measurement device, combine-harvester, and rice component measurement method - Google Patents

Abstract

To provide a rice component measurement device, a combine-harvester, and a rice component measurement method each of which enables rice components to be more accurately measured with simple configuration.SOLUTION: A component measurement device 10 is provided in a combine-harvester 1 and comprises: a light irradiation unit 12a which can irradiate rice being a measurement target with measurement light in which a peak wavelength is present in at least one wavelength band out of a first wavelength band from 660 nm to 690 nm, a second wavelength band from 900 nm to 930 nm, and a third wavelength band from 950 nm to 980 nm; a light reception unit 12b receiving reflected light reflected from the measurement target when the measurement light impinges the measurement target; and an analysis unit 13 analyzing components of the measurement target using information of the reflected light received by the light reception unit.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rice component measuring device for measuring rice components, a combine, and a technique for measuring rice components.

In recent years, in the agricultural field, a method of measuring soil fertility and the like by measuring components such as nutritional value contained in harvested crops has been known.

Then, the information on the point where the crop is harvested is linked with the measured nutritional value data, and a map showing the distribution of fertility in the field is created to manage the crop growth. For example, based on this map, topdressing is performed so that the fertility is uniform, or pesticides are sprayed. This makes it possible to ensure homogenization of crops and stable yields.

For this reason, the harvester (combine) is equipped with a measuring device for analyzing the components of the harvested crops.

For example, Patent Document 1 discloses a combine provided with an optical measuring device that irradiates grains of harvested crops with light and outputs a measured value based on the spectral measurement of the irradiated light. There is. In the patent document 1, the water content and protein component values of agricultural products are calculated from the measured values output from the optical measuring device.

Japanese Unexamined Patent Publication No. 2016-171749

However, as in Patent Document 1, when the components of agricultural products are analyzed by an optical measuring device, the relationship between the measured values and the component values differs depending on the type of agricultural product, and measurement suitable for the agricultural product to be measured can be performed. There is a need to do.

Further, since the measuring device needs to be mounted at a limited position where the crops harvested in the combine can be measured, a simple and compact structure is desired.

The present invention has been made to solve such a problem, and an object thereof is a rice component measuring device, a combine, and rice that can measure rice components more accurately with a simple configuration. To provide a method for measuring the components of rice.

In order to achieve the above object, in the rice component measuring apparatus according to the present invention, the peak wavelength of the rice to be measured is a first wavelength band of 660 nm to 690 nm and a second wavelength band of 900 nm to 930 nm. , A light irradiation unit capable of irradiating measurement light in at least one wavelength band of the third wavelength band from 950 nm to 980 nm, and a light receiving unit that receives the reflected light reflected by the measurement light hitting the measurement target. It also includes an analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit.

Further, in the rice component measuring apparatus according to the present invention, a light irradiation unit capable of irradiating the rice to be measured with measurement light having a peak wavelength between 660 nm and 690 nm and the measurement light reflected by the measurement target. It includes a light receiving unit that receives the reflected light, and an analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit.

Further, in the rice component measuring apparatus according to the present invention, a light irradiation unit capable of irradiating the rice to be measured with measurement light having a peak wavelength between 900 nm and 930 nm and the measurement light reflected by the measurement target. It includes a light receiving unit that receives the reflected light, and an analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit.

Further, in the rice component measuring apparatus according to the present invention, a light irradiation unit capable of irradiating the rice to be measured with measurement light having a peak wavelength between 950 nm and 980 nm, and the measurement light reflected by the measurement target. It includes a light receiving unit that receives the reflected light, and an analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit.

Further, in the above-mentioned rice component measuring apparatus, the light irradiation unit may be capable of irradiating measurement light having a peak wavelength between 700 nm and 900 nm.

In order to achieve the above-mentioned object, the combine according to the present invention is provided with the above-mentioned rice component measuring device.

In order to achieve the above object, in the rice component measuring method according to the present invention, the peak wavelength of the rice to be measured is a first wavelength band of 660 nm to 690 nm and a second wavelength band of 900 nm to 930 nm. A light irradiation step of irradiating the measurement light in at least one wavelength band of the third wavelength band from 950 nm to 980 nm, and a light receiving step of receiving the reflected light reflected by the measurement light hitting the measurement target. The present invention includes an analysis step of analyzing the component to be measured from the information of the reflected light received in the light receiving step.

According to the present invention using the above means, the components of rice can be measured more accurately with a simple structure.

It is a schematic block diagram which shows the structure of the combine provided with the rice component measuring apparatus which concerns on embodiment of this invention. It is a schematic block diagram which shows the structure of the measuring part which concerns on embodiment of this invention. It is explanatory drawing which shows the spectral spectrum of the sample rice. (A) It is explanatory drawing which shows the protein destruction test result of a sample rice, and (b) is an explanatory diagram which shows the water content destruction test result of a sample rice. (A) The relationship diagram between the PLS coefficient and the wavelength of the measured light in the protein of rice, and (b) the relationship diagram between the PLS coefficient and the wavelength in the water content of rice.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a combine equipped with a rice component measuring device according to the present embodiment, and FIG. 2 shows a schematic configuration diagram showing a configuration of a measuring unit. Hereinafter, the configuration of the embodiment of the present invention will be described based on these figures.

As shown in FIG. 1, the combine 1 is a track-traveling type self-propelled combine, and can be self-propelled by a pair of left and right tracks driven by an engine (not shown). Grains (rice) are harvested by the combine harvester and grains (rice) are harvested.

The combine 1 is provided with a cutting portion 3 at the front portion of the vehicle body that can be moved up and down by the drive portion 2. The drive unit 2 is, for example, a hydraulic actuator, and can move up and down with respect to the cutting unit 3 between the cutting position shown by the dotted line in FIG. 1 and the standby position shown by the solid line.

The cutting section 3 is configured to cut the grain culms of the grains to be planted in the field at the cutting position and supply the cut grain culms to the threshing section 5 via the first transport section 4. Although not shown, the cutting unit 3 is provided with a cutting blade and a receiving blade like a hair clipper, and the crop is cut at a height near the ground by the reciprocating motion of the cutting blade.

The combine 1 raises the cutting unit 3 to the standby position so as not to interfere with running or the like when the grain is not cut, and lowers it to the cutting position when cutting. The raising and lowering of the cutting section 3 by the driving section 2 can be operated by a lifting lever (not shown). The drive unit 2 moves up and down according to a binary drive signal transmitted from a control unit (not shown), for example, 0 V when raising the cutting unit 3 and 5 V when lowering the cutting unit 3. Therefore, when the drive signal is 5V, it can be determined that the cutting unit 3 is in the cutting position and the combine 1 is in the state of cutting the grain.

The first transport section 4 is composed of a transport chain, a scraping belt, or the like, and has a configuration in which the grain culms cut by the cutting section 3 are aligned and sent to the threshing section 5.

Although not shown, the threshing section 5 is provided with a cylindrical handling cylinder, and a large number of handling teeth are attached to the handling cylinder. The rotation of this handling cylinder causes the culm to be threshed, and the grains are separated from the tips. The threshing section 5 is connected to the storage section 7 via a second transport section 6.

The second transport unit 6 has a passage for transporting the threshed grains to the storage unit 7. The second transport unit 6 may be provided with a sorting mechanism for sorting grains from threshing, for example.

The storage unit 7 is a tank for storing grains supplied from the second transport unit 6. A discharge auger 8 is connected to the storage unit 7, and the grains stored in the storage unit 7 can be discharged to the outside by the discharge auger 8.

Further, the combine 1 is provided with a component measuring device 10 for measuring the components of grains (rice).

The component measuring device 10 includes a computer including a CPU, a storage device, and sensors, and functionally mainly includes a cutting determination unit 11, a measuring unit 12, an analysis unit 13, and a position information acquisition unit 14. There is. Further, the component measuring device 10 can communicate with the external device 20.

The cutting determination unit 11 has a function of determining the cutting state of the grain by the combine 1. Specifically, the cutting determination unit 11 determines from the drive signal of the drive unit 2 that the grain is in a cutting state when the cutting unit 3 is in the cutting position, and is in a cutting state when the cutting unit 3 is in the standby position. Judge that there is no.

The measuring unit 12 irradiates the deciduous grain (rice) passing through the second transporting unit 6 with the measuring light and receives the reflected light reflected by the grain to obtain an optical measurement value of the grain. It has a function to detect.

Specifically, as shown in FIG. 2, the measuring unit 12 has a light irradiation unit 12a and a light receiving unit 12b.

The light irradiation unit 12a is provided side by side on the base substrate 30 so that the first to fourth light emitting elements 31a to 31d emit the first to fourth measurement lights P1 to P4 in the same direction. .. The first to fourth light emitting elements 31a to 31d are pulse oscillation type laser diodes (PLDs) capable of emitting the first to fourth measurement lights P1 to P4 having specific wavelengths as peak wavelengths (peak values), respectively. Is. It is preferable that the first to fourth light emitting elements 31a to 31d emit light in sequence so that the measured lights are not mixed, and the light emitting order and the light emitting timing of the first to fourth light emitting elements 31a to 31d are determined by the analysis unit. It is controlled by 13 or another control unit (not shown).

The peak wavelengths of the first to fourth measurement lights P1 to P4 emitted from the first to fourth light emitting elements 31a to 31d are 660 nm to 690 nm (first wavelength band) and 700 nm to 900 nm (fourth wavelength band). ), 900 nm to 930 nm (second wavelength band), 950 nm to 980 nm (third wavelength band), and preferably within one of the wavelength bands without duplication. In the present embodiment, the peak wavelength of the first measurement light P1 emitted by the first light emitting element 31a is 680 nm, the peak wavelength of the second measurement light P2 emitted by the second light emitting element 31b is 800 nm, and the third The peak wavelength of the third measurement light P3 emitted by the light emitting element 31c is 920 nm, and the peak wavelength of the fourth measurement light P4 emitted by the fourth light emitting element 31d is 970 nm, but the respective measurement lights correspond to each other. It suffices if the peak wavelength is within the wavelength band.

Further, the base substrate 30 is provided with first to fourth lenses 32a to 32d and first to fourth mirrors 33a to 33d, respectively, corresponding to the first to fourth light emitting elements 31a to 31d. ..

The first to fourth lenses 32a to 32d refer the first to fourth measurement lights P1 to P4 emitted from the corresponding first to fourth light emitting elements 31a to 31d to the respective emission optical axes Lr1 to Lr4. The luminous flux is parallel to.

The first to fourth mirrors 33a to 33d refer to the first to fourth measurement lights P1 to P4 emitted from the corresponding first to fourth light emitting elements 31a to 31d, respectively, with the respective emission optical axes Lr1 to Lr4. It is provided so as to reflect on the first irradiation optical axis L1 orthogonal to the above. Further, the first to third mirrors 33a to 33c are dichroic mirrors, and transmit light in a wavelength band other than the corresponding measurement lights P1 to P3. The fourth mirror 33d may be a mirror that reflects the measurement light P4. That is, these first to fourth mirrors 33a to 33d direct the first to fourth measurement lights P1 to P4 of the first to fourth light emitting elements 31a to 31d toward the same first irradiation optical axis L1. It has a function to dodge.

Further, the base substrate 30 is provided with a fifth lens 34 and an incident portion 35a of the optical fiber 35 on the irradiation optical axis L. The fifth lens 34 collects the first to fourth measurement lights P1 to P4 traveling on the first irradiation optical axis L1 on the incident portion 35a of the optical fiber 35.

The optical fiber 35 has a function of changing the optical axes of the first to fourth measurement lights P1 to P4 incident from the incident portion 35a to the second irradiation optical axis L2. Further, the optical fiber 35 advances inside while mixing the first to fourth measurement lights P1 to P4. Then, the optical fiber 35 emits the first to fourth measurement lights P1 to P4 incident from the incident portion 35a from the emitting portion 35b toward the sixth lens 36 on the second irradiation optical axis L2. Let me.

A sixth lens 36, a fifth mirror 37, and a cylindrical lens 38 are provided side by side on the second irradiation optical axis L2.

The sixth lens 36 has a function of making the first to fourth measurement lights P1 to P4 emitted from the exit portion 35b of the optical fiber 35 a light flux parallel to the second irradiation optical axis L2. In the fifth mirror 37, a part of the incident parallel light flux (first to fourth measurement lights P1 to P4) is transmitted toward the cylindrical lens 38, and the rest is arranged with the seventh lens 39. It reflects on the branched optical axis Lb. The seventh lens 39 collects the parallel light flux (first to fourth measurement lights P1 to P4) reflected by the fifth mirror 37 on the measurement light monitoring unit 40 on the branched optical axis Lb. The measurement light monitoring unit 40 is formed of four PDs (Photodiodes) according to the wavelength of the measurement light, and outputs an electric signal (detection output (detection output (detection output)) of the amount of light emitted from the first to fourth measurement lights P1 to P4 received. The received light value)) is output to the analysis unit 13.

The cylindrical lens 38 is an optical member having a refractive power in only one direction when viewed in a plane orthogonal to the second irradiation optical axis L2, and the first to fourth measurement lights P1 to pass through the fifth mirror 37. P4 is magnified in one direction on a plane orthogonal to the second irradiation optical axis L2. Here, when the first to fourth measurement lights P1 to P4 are emitted from the emission portion 35b of the optical fiber 35, they are circular when viewed in a plane orthogonal to the irradiation optical axis L as described above. Orthogonal. Therefore, the first to fourth measurement lights P1 to P4 having a circular cross section passed through the fifth mirror 37 have an elliptical shape enlarged in only one direction to a predetermined size by the cylindrical lens 38.

The light irradiation unit 12a configured in this way transmits the first to fourth measurement lights P1 to P4 having a specific peak wavelength from the first to fourth light emitting elements 31a to 31d via the above-mentioned optical system. Irradiate the threshed grains.

The light receiving unit 12b that receives the reflected light Pr reflected by the first to fourth measurement lights P1 to P4 hitting the grain has a light receiving element 50, an amplifier circuit 51, and an A / D (analog / digital) converter 52. ..

The light receiving element 50 has a function of outputting an electric signal corresponding to the amount of light when light is incident on the light receiving surface. In this embodiment, the light receiving element 50 is formed of four PDs (Photodiodes), and outputs an electric signal (detection output (light receiving value)) toward the amplifier circuit 51. The electric signal output from the light receiving element 50 includes not only the amount corresponding to the amount of reflected light Pr from the grain but also the amount corresponding to the amount of ambient light.

The amplifier circuit 51 appropriately amplifies the input electric signal and outputs it to the A / D converter 52. The A / D converter 52 converts the input electric signal (light received value) into a digital signal and outputs it to the analysis unit 13.

Returning to FIG. 1, the analysis unit 13 has a function of analyzing the component of rice to be measured from the information of the reflected light Pr received by the light receiving unit.

Specifically, the analysis unit 13 stores a calibration curve in advance in a storage unit (not shown), and estimates the protein and water content of the grain by using the information of the calibration curve and the reflected light Pr. For this estimation, the analysis unit 13 first determines the amount of light emitted from the first to fourth measurement lights P1 to P4 emitted by the first to fourth light emitting elements 31a to 31d and the first to fourth measurement lights P1. Based on the received values of the first to fourth reflected lights Pr1 to Pr4 corresponding to P4, the first to fourth reflectances R1 to R4 of the grains with respect to the first to fourth measured lights P1 to P4. Is calculated. The amount of light emitted from the measured lights P1 to P4 can be calculated from the set value of the light emitting element and the received light value received by the measurement light monitoring unit.

In the present embodiment, the analysis unit 13 estimates the protein using the first to fourth reflectances R1 to R4 with respect to the first to fourth measurement lights P1 to P4, and the second to fourth measurement lights P2. Moisture is estimated using the second to fourth reflectances R2 to R4 with respect to ~ P4. Specifically, the analysis unit 13 stores the estimation coefficient based on the calibration curve according to the first to fourth reflectances R1 to R4, multiplies the measured reflectance by the estimation coefficient, and each term. To calculate the estimated data of the amount of protein and water by adding. Then, the analysis unit 13 provides the estimated protein and water estimation data to the external device 20.

The position information acquisition unit 14 has a function of acquiring the position information of the combine 1, and is, for example, a GNSS (Global Navigation Satellite System) receiver such as a GPS (Global Positioning System).

Further, in the present embodiment, a field management system including an external device 20 of the component measuring device 10 is constructed outside the combine 1.

The external device 20 is, for example, a personal computer or a tablet terminal, and includes a storage unit 21 and a field evaluation unit 22.

The storage unit 21 is a storage medium that stores various data such as the estimation data (component information) of the protein and water content of the grain estimated by the analysis unit 13 and the position information of the combine 1 acquired by the position information acquisition unit 14. For example, a hard disk or memory. The storage unit 21 can acquire information from the analysis unit 13 and the position information acquisition unit 14 via a wireless or wired communication means or a removable memory.

The field evaluation unit 22 can generate the component distribution of rice in the field by taking out the estimation data of the protein and water stored in the storage unit 21 and the history of the position information after finishing the cutting of the target field. is there. That is, according to the field evaluation unit 22, it is possible to generate evaluation data such as a fertility map based on the protein and water content of rice in the field harvested by the combine 1. Specifically, the field evaluation unit 22 is an application program operated by a computer.

As described above, in the rice component measuring device 10 mounted on the combine 1 in the present embodiment, the light irradiation unit 12a of the measuring unit 12 has a peak wavelength of 680 nm with respect to the grain (rice) after grain removal. A grain whose measurement target is a first measurement light P1, a second measurement light P2 having a peak wavelength of 800 nm, a third measurement light P3 having a peak wavelength of 920 nm, and a fourth measurement light P4 having a peak wavelength of 970 nm. Irradiate rice) (light irradiation step).

Then, the light receiving unit 12b of the measuring unit 12 receives the first to fourth reflected lights Pr1 to Pr4 reflected by the first to fourth measurement lights P1 to P4 hitting the grains (light receiving step), and the analysis unit. 13 analyzes the protein and water content of rice from the information of the first to fourth reflected lights Pr1 to Pr4 (analysis step).

Here, referring to FIGS. 3 to 5, FIG. 3 shows an explanatory diagram showing the spectral spectrum of the sample rice, and FIG. 4 (a) shows an explanatory diagram showing the results of the protein destruction test of the sample rice. (B) is an explanatory diagram showing the results of the water destruction test of the sample rice, FIG. 5 (a) is a diagram showing the relationship between the PLS coefficient of the rice protein and the wavelength of the measurement light, and FIG. The relationship diagram between the PLS coefficient and the wavelength in the water content of rice is shown, and the effect of this embodiment will be described below based on these diagrams.

Samples of rice grown under various conditions, such as rice grown without fertilizer, rice grown with compost, rice grown with organic fertilizer, rice grown with chemical fertilizer, etc. As a result of measuring the spectral spectra of rice (16 types from A to P in FIGS. 3 and 4), the relationship between the wavelength and the reflectance as shown in FIG. 3 was obtained. As shown in FIG. 3, it can be seen that each sample rice shows a similar tendency of change depending on the wavelength, although there is a difference in the reflectance.

Further, as a result of detecting the measured values of protein and water content in the sample rice by destructive inspection, the results shown in FIG. 4 (a) for protein and FIG. 4 (b) for water content were obtained.

Then, using the results of the spectral spectrum of FIG. 3 and the measured values (true values) of the proteins and waters of FIG. 4, chemometrics (chemometrics) analysis is performed by PLS regression (Partial Least Squares) (partial least squares method). As a result, the result shown in FIG. 5 was obtained. Specifically, the measured values of protein and water were used as response variables, and the reflectance at each wavelength was used as an explanatory variable (prediction variable), and PLS coefficients from the first order to the fourth order were calculated.

From FIG. 5 (a) showing the PLS coefficient of the rice protein, the wavelength band of 660 nm to 690 nm (first wavelength band), 900 nm to 930 nm (second wavelength band), and 950 nm to 980 nm (third wavelength band). Since the change in the coefficient with respect to the wavelength is large, it can be seen that these wavelength bands are characteristic wavelengths for the rice protein.

Further, from FIG. 5B showing the PLS coefficient of water content of rice, the change in the coefficient with respect to the wavelength is large in the wavelength band from 900 nm to 930 nm (second wavelength band) and 950 nm to 980 nm (third wavelength band). From this, it can be seen that these wavelength bands are characteristic wavelengths for rice proteins.

From the results of such analysis, the component measuring apparatus 10 of the present embodiment has a first measurement light P1 having a peak wavelength of 680 nm within 660 nm to 690 nm (first wavelength band), and 900 nm to 930 nm (second wavelength band). By using the third measurement light P3 having a peak wavelength of 920 nm in the wavelength band) and the fourth measurement light P4 having a peak wavelength of 970 nm in the 950 nm to 980 nm (third wavelength band), the rice can be used. The protein can be estimated more accurately.

Further, the component measuring device 10 of the present embodiment has a third measurement light P3 having a peak wavelength of 920 nm within 900 nm to 930 nm (second wavelength band) and 950 nm to 980 nm (third wavelength band). It can be seen that the water content of rice can be estimated more accurately by using the fourth measurement light P4 having a peak wavelength of 970 nm.

By irradiating the measurement light of a specific wavelength suitable for the component measurement of rice and analyzing the component from the reflected light, the reflected light is separated by irradiating the light including a wide band wavelength. Compared to the spectroscopic analysis performed, a spectroscope or the like is not required, the configuration can be simplified, and the number of analysis processing steps can be simplified.

Therefore, according to the rice component measuring device 10 of the present embodiment and the combine 1 provided with the component measuring device 10, the rice component can be measured more accurately with a simple configuration.

Further, (fourth wavelength band) exhibits stable characteristics as compared with the other three wavelength bands, and robustness can be improved by using such a stable wavelength band as a reference.

Although the description of one embodiment of the present invention is completed above, the aspect of the present invention is not limited to this embodiment.

For example, the configuration of the measuring unit 12 shown in FIG. 2 is an example, and is limited to this configuration as long as the light irradiating unit irradiates the measuring light of each wavelength and the light receiving unit can receive the reflected light. It is not something that is done.

Further, in the above embodiment, since the first to fourth measurement lights P1 to P4 can be irradiated from the light irradiation unit 12a, there is an advantage that sufficient estimation accuracy can be ensured for the protein and water content of rice. However, it is not always necessary to irradiate all four measurement lights. It suffices if at least one of the first measurement light, the third measurement light, and the fourth measurement light can be irradiated. For example, when measuring only the protein of rice, it suffices to be able to irradiate one of the first measurement light, the third measurement light, and the fourth measurement light. When measuring only the water content of rice, it is sufficient that the third measurement light or the fourth measurement light can be irradiated.

Further, in the above embodiment, the measuring unit 12 is provided in the second transport unit 6 downstream of the threshing unit 5, but the arrangement of the measuring unit 12 is not limited to this, and may be arranged at another position. ..

Further, in the above embodiment, the storage unit 21 and the field evaluation unit 22 are provided outside the combine 1, but the configuration is not limited to this. For example, the component measuring device in the combine may have at least a storage unit, and the field evaluation unit may be provided externally, or both the storage unit and the field evaluation unit may be provided in the component measuring device in the combine. ..

Further, in the above embodiment, the analysis unit 13 is provided inside the combine 1, but the analysis unit may be provided in the external device.

1 Combine 2 Drive unit 3 Mowing unit 4 1st transport unit 5 Threshing unit 6 2nd transport unit 7 Storage unit 10 Component measurement device 11 Mowing judgment unit 12 Measuring unit 12a Light irradiation unit 12b Light receiving unit 13 Analysis unit 14 Position information Acquisition unit 20 External device 21 Storage unit 22 Field evaluation unit

Claims (7)

The peak wavelength of the rice to be measured is at least one of the first wavelength band of 660 nm to 690 nm, the second wavelength band of 900 nm to 930 nm, and the third wavelength band of 950 nm to 980 nm. A light irradiation unit that can irradiate a certain measurement light,
A light receiving unit that receives the reflected light that the measurement light hits the measurement target and is reflected.
An analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit, and an analysis unit.
A rice component measuring device equipped with. A light irradiation unit capable of irradiating the rice to be measured with measurement light having a peak wavelength between 660 nm and 690 nm,
A light receiving unit that receives the reflected light that the measurement light hits the measurement target and is reflected.
An analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit, and an analysis unit.
A rice component measuring device equipped with. A light irradiation unit capable of irradiating the rice to be measured with measurement light having a peak wavelength between 900 nm and 930 nm,
A light receiving unit that receives the reflected light that the measurement light hits the measurement target and is reflected.
An analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit, and an analysis unit.
A rice component measuring device equipped with. A light irradiation unit capable of irradiating the rice to be measured with measurement light having a peak wavelength between 950 nm and 980 nm,
A light receiving unit that receives the reflected light that the measurement light hits the measurement target and is reflected.
An analysis unit that analyzes the component to be measured from the information of the reflected light received by the light receiving unit, and an analysis unit.
A rice component measuring device equipped with. The rice component measuring apparatus according to any one of claims 1 to 4, wherein the light irradiating unit can also irradiate measurement light having a peak wavelength between 700 nm and 900 nm. A combine comprising the rice component measuring apparatus according to any one of claims 1 to 5. The peak wavelength of the rice to be measured is at least one of the first wavelength band of 660 nm to 690 nm, the second wavelength band of 900 nm to 930 nm, and the third wavelength band of 950 nm to 980 nm. A light irradiation process that irradiates a certain measurement light,
A light receiving step of receiving the reflected light reflected by the measurement light hitting the measurement target,
An analysis step of analyzing the component to be measured from the information of the reflected light received in the light receiving step, and an analysis step.
A method for measuring the composition of rice.

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