JPH07140134A - Apparatus for measuring content of component of rice - Google Patents

Abstract

PURPOSE:To provide an apparatus for measuring the content of components of rice in which a near infrared component analyzer receives near infrared rays reflected on a sample rice and a controller detects the infrared absorbance of the sample rice and operates the content of components based on the detected value and a prestored component conversion coefficient. CONSTITUTION:Component conversion coefficients for operating the content of main components of rice, a set temperature, and a temperature correction value are set, on a keyboard, into the memory 61 of a controller 59 or previously inputted into the memory 61. A button 56D for measuring/selecting the quantity of reflected/transmitted light and an automatic operation button 56B are depressed, a near infrared spectrometer 1 is conducted and and a light source 4 is turned ON to operate a temperature regulator 77 in order to sustain the spectrometer 1 at a constant temperature. A motor 63 is turned ON by a signal from a temperature detector 78 to rotate rollers 20-23 and 49. Subsequently, an electromagnet 32 is conducted to vibrate a vibration frame 28. A position sensor 50 detects that a sample container 33 is located at a filling position of sample rice and a level gauge 19 detects that the sample rice has been fed to a supply hopper 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring the content of each component that affects the taste of rice.

[0002]

2. Description of the Related Art The taste of rice is determined at the production stage such as variety selection, production area, cultivation method and harvesting method, or at the post-harvest processing stage such as drying, storage and rice polishing processing. There is a wide variety of things that are affected and that are affected during rice cooking processing, but the most affected is the production stage, and then the processing stage.

[0003] Generally, Koshihikari and Sasanishiki are the most popular brands with good taste, but the main factor that makes them taste good is amylose in starch quality compared to other general brands of rice. It is because of low content of protein and low protein content. In addition, a high content of water is also a good tasting condition. Of course, the same brand does not mean that the contents of amylose and protein in starch are the same, and it depends on the conditions (soil, water quality) of the cultivated place and the weather conditions (temperature, sunshine hours, rainfall). Even if the taste evaluation of the previous year was high, there is no guarantee that the taste of rice harvested this year will be the same as that of the previous year.
It is not always a rational management of rice to purchase rice or decide the composition by relying on the taste data collected in the past.

As an example, the amylose and protein contained in the standard polished white rice of each brand rice are as shown in the following table.

Brand Origin Amylose% Protein% Koshihikari Niigata 19.9 6.70 Sasanishiki Yamagata 20.9 6.89 Ishikari Hokkaido 23.2 8.48 (Amylose content relative to 100% starch) , Protein indicates the ratio to the weight of rice.) Therefore, the chemical content of amylose or amylopectin and the content of protein and water in rice are measured without being restricted to specific famous brands. The theme is how to improve the taste of low-ranked rice, which has a low taste evaluation. Usually, it is difficult to secure only a single brand of rice in a rice mill, and rice is milled by mixing several brands of rice, and the high rank rice and low rank rice of this taste evaluation are mixed appropriately. Although polished rice with a stable taste is distributed, the fact is that these are processed by taking into consideration the combination of the brand and the production area. However, the complaints were frequently raised by consumers.

[0006]

[Problems to be Solved by the Invention] Conventionally, as a method for evaluating the taste of cooked rice, there has been a sensory test of actually eating and sensory evaluation, or a method of evaluating taste by measuring viscosity and hardness by physical measurement. There are known devices such as a Brabender amylograph and a texturometer. In addition, there is a method of chemically assessing the content of ingredients to evaluate the taste, and as a chemical measurement method of amylose or amylopectin in starch, there are iodine colorimetric colorimetric method and iodine amperometric method. The method also requires a considerable amount of skill in measurement, has large variations, and has a problem that it takes a long time for measurement.

In order to solve the above-mentioned problems of the prior art, the present invention uses a near-infrared light to easily and accurately measure the content rate of the ingredients that influence the taste of rice. It is intended to provide.

[0008]

[Means for Solving the Problems] In the apparatus for measuring the content rate of main components that influence the taste of rice according to the present invention, near-infrared light is obtained by a filter using a diffraction grating-based spectroscopic element, and this is used as sample rice. Irradiate and detect the degree of absorption of near infrared light by the sample rice. On the other hand, a component conversion coefficient that defines the relationship between the content of the main components that affect the taste of rice and the absorption degree of near infrared light by sample rice is prepared, and the detected absorption degree and the component conversion coefficient From the above, a means for calculating the content rates of the main components in the sample rice is used.

[0009]

The filter using the spectroscopic element with the diffraction grating provides near-infrared light having a continuous wavelength range. The near-infrared spectroscopic spectroscope irradiates the sample rice with near-infrared light and receives near-infrared light passing through the sample rice. The control device detects the degree of absorption of near infrared light by the sample rice, and calculates the component content rate from the detected value and the component conversion coefficient stored in advance.

[0010]

Embodiments of the present invention will be described with reference to FIGS. In FIGS. 1 and 2, a filter (FIG. 8) using a spectroscopic element 79 formed of a diffraction grating is arranged in the upper part of the cabinet 2 of the near infrared spectroscopic analyzer 1 shown by reference numeral 1. In this structure, the irradiation light from the light source is condensed by the condensing lens 80, a part of the light passes through the slit 81, is irradiated to the light entering mirror 82, and the light reflected by the light entering mirror 82 is reflected by a reflecting mirror 83. Is further reflected by the spectroscopic element 79.
Is incident at an arbitrary incident angle α and is dispersed. As a result, near infrared light in an arbitrary wavelength band can be obtained from the light receiving mirror 84. By rotating the spectroscopic element 79 and controlling the incident angle from the reflecting mirror 83, continuous near-infrared light in the wavelength range of 1900 nm to 2500 nm can be obtained. With this filter, the near-infrared spectroscopic analyzer 1 can scan the sample rice with the continuous near-infrared light to obtain a measurement value in a required wavelength range. It is also possible to select and measure an arbitrary wavelength range.

1 and 2 show another filter type in which a light source 4 and a reflecting mirror 5 are associated with each other, and a plurality of filters 6 having specific wavelengths 6 are provided in front of the reflecting mirror 5. ... is provided. The filters 6 are connected to the electric motor 10, and the crossing angle between the irradiation optical axis and the arbitrary filter 6 can be arbitrarily set by finely rotating the electric motor 10. A window 8 for taking in near-infrared light of a specific wavelength that has passed through the gap of the slit 3 is provided above the integrating sphere 7.

The near-infrared spectroscopic analyzer 1 is further provided with reflected light quantity detectors 9A and 9B (light receivers) at symmetrical positions inside the integrating sphere 7, and the bottom of the integrating sphere 7 is opened to make a measurement part. 1
1, a transparent plate 12 is provided in the measuring unit 11, and a transmitted light amount detector 9C (light receiver) is provided below the transparent plate 12. A sample supply device 13 is arranged laterally inside the cabinet 2. The sample supply device 13 is provided with a supply hopper 15 which is opened at one side 14 of the upper wall of the cabinet 2 and which is connected to a rotary valve 18 having a rotary vane 17 attached to a lower portion of the opening 16 of the hopper 15 and has a side wall. A level meter 19 is attached.
In the lower part of the hopper 15, a pair of rollers 20 and 21 having a large number of sharp protrusions are axially rotatably mounted so as to face each other, and below the pair of rollers 2 for fine powder having a smooth surface.
A cleaning device 25A, which is composed of an injection nozzle provided with an electromagnetic valve and an elastic material that comes into contact with the rollers, which are rotatably opposed to each other and face the rollers 20, 21, 22, 23 inside the crushing chamber 24. .About.25D are provided.

At the lower part of the crushing chamber 24, a sorting device 2 for crushed particles is provided.
In the sorting device 26, a vibrating frame 28 having a coarse particle discharge port 27 fixed to one side is supported by a leaf spring 29 so that the perforated wall plate 30 can be attached to and detached from the vibrating frame 28. An electromagnet 32 is fixedly provided near the side surface 31 of the vibrating frame 28.

A sample container 33 for filling the ground sample is provided below the sorting device 26 (see FIG. 3). The bottom wall surface of the sample container 33 is made of a transparent material, and the sample container 33 can be freely inserted into and removed from a guide groove 36 provided in a container support 35 mounted on the sample container moving body 34.
As a moving mechanism of the sample container 33, a sample container moving body 34 having a rack 37 fixed to one side is used as a hollow shaft.
The pedestal fixed to the bottom wall of the cabinet 2 by inserting the orbital shaft 38 having a circular cross section into the above, the one side 39 of the orbital shaft 38 is pivotally mounted on the turning handle 40, and the other side 41 is mounted on the bearing base 42. 43, a fulcrum base 44 is mounted, a gear 46 axially mounted on a motor 45 is meshed with a rack 37 of the sample container moving body 34, and an end of the motor base 47 mounted with the motor 45 is free to move to the sample container moving body 34. When fitted, an electromagnet 48 having a rod extending and contracting is rotatably connected to the motor base 47 and the fulcrum base 44.

Reference numeral 49 is a rotary roller which serves as a sample filling device for compressing and filling the crushed sample on the sample container 33 and removing an excessive amount of sample, and 50 is a filling roller for setting the position of the sample container 33 at the filling portion. A part position sensor 51 is a measuring part position sensor for setting the position of the sample container 33 to the measuring part, and the sensor 51 and the transmitted light amount detector 9C are mounted on a supporting rod fixed to the motor 45. 6
3 is an electric motor that rotationally drives the rollers 20, 21, 22, 23 and the rotating roller 49. 52 is an injection nozzle that removes the sample rice from the sample container 33 with a blast and cleans it; 53 is a receiving box for receiving unnecessary samples; 54A
Is a cleaner fixed to the sample container moving body 34 to be contacted with and separated from the transparent plate 12, and 54B is a cleaner for cleaning the surface of the transmitted light amount detector 9C.

A thermistor for detecting the sample temperature is embedded in the side wall of the concave portion of the sample container 33 to form a temperature detector 65. A terminal 66 connected to the temperature detector 65 is projected from the outer side wall of the sample container 33 to form an integrating sphere 7. A crimp portion 67 of the terminal 66 of the temperature detector 65 is provided on the outer side of the crimp portion 67, and the crimp portion 67 is electrically connected to a control device 59 described later. A display device 55 including a display 55A, an operation button 56, a manual operation button 56A, an automatic operation button 56B, a transmitted light amount measurement selection button 56C, and a combined reflection / transmission selection button 56D are provided on the front surface of the cabinet 2. . Reference numeral 58 is a printer, and 59 is a control device, which includes a storage device 61 in which a component conversion coefficient, a temperature setting value, and a temperature correction value for calculating the content values of components that influence the taste of rice are set;
The signal processing device 62 and the like are provided. In FIG. 4, 5
Reference numeral 7 is an external supply unit for sample rice provided in the front opening of the cabinet 2.

Next, the structure of the controller 59 will be described with reference to FIG. The reflected light amount detectors 9A and 9B, the transmitted light amount detector 9C, and the level meter 1 are provided on the input side of a control device 59 including an arithmetic device 60, a storage device 61, a signal processing device 62, and the like.
9, position sensor 50, 51, automatic operation button 56B,
Reflection / transmission combination selection button 56D, temperature detectors 65, 7
8, the keyboard 64 is connected to each other, and the control device 59
A display device 55 and a printer 58 are connected to the output side of
Also, the light source 4, the electric motors 10, 63, the electromagnets 18, 32,
48, the motor 45, the cleaning devices 25A to 25D, and the injection nozzle 52 are connected to the output side of the control device 59 via the drive devices 68 to 76, respectively.

The operation of the above structure will be described below with reference to FIGS. The component conversion coefficient for calculating the content rate of the main components of rice from the keyboard 64, the temperature set value, and the temperature correction value are set in the storage device 61 of the control device 59 or are input in advance in the storage device. (Step S1). As an example, a method for measuring the content rate of amylose will be described.

The amylose component conversion coefficient is based on the content of a large number of sample rice measured by a chemical quantitative analysis method, for example, an iodine colorimetric colorimetric method or an iodine amperometric titration method. The values obtained by signal processing of the values are obtained using a multiple regression analysis (or also called multi-dimensional regression analysis) program.

Here, an example of multiple regression analysis is shown. For example, five filters F1 = 2100 nm, F2 = 2150
nm, F3 = 2250 nm, F4 = 2250 nm, F5
= 2370 nm is used, the following linear relationship is established. Aa = F0 + F1.X1a + F2.X2a + F3.X3
a + F4.X4 a + F5.X5 a + C Aa is the percent amylose content measured by the chemical quantitative analysis method of the sample rice a. F0 to F5 are coefficients obtained by this multiple regression analysis. X1 a to X5 a correspond to the filter numbers of F1 to F5, respectively, and the absorbance (log I0 / I) of the sample rice a measured with a near infrared spectroscopic analyzer. C is an error term, and here C = 0.

In the case of sample rice a (assuming 9 solid lines)
Is X1 a = 0.61, X2 a = 0.56, X3 a = 0.
54, X4 a = 0.66, X5 a = 0.65, and the multiple regression equation is Aa = F0 +0.61 F1 +0.56 F2 +0.54
It becomes F3 + 0.66 F4 + 0.65 F5. Similarly, the absorbance, that is, the degree of absorption of near-infrared light by the sample rice can be substituted into the multiple regression equation up to n pieces of sample rice to obtain the following component conversion coefficient.

A = 33.3 + 2380X1-2300X2-640X3
+ 1405X4-880X5 Also, the fact that the sample rice absorbs the near-infrared light that irradiates the sample rice is a phenomenon that occurs because the chains of the atoms that make up the molecule vibrate due to thermal energy. Due to different natural frequencies, the magnitude of vibration changes in the wavelength range of near-infrared light and heat absorption occurs. When the sample rice initially has a small amount of heat energy (when the temperature is low), vibration is small, and the degree of absorption due to the difference in molecular structure cannot be accurately measured, so it is necessary to correct the temperature. As an experimental example, FIG. 7 shows a temperature correction value for correcting the measurement value of amylose by the temperature detected by the temperature detector 65. If the temperature is 20 ° C. or higher, no correction is required, but if the temperature is 10 ° C., 1.0% is added to obtain a true value. Also, during that time, the change was substantially linear.

The temperature set value is for adjusting the temperature of the near-infrared spectroscopic analyzer to a constant temperature, and is usually set to 25 ° C. The purpose is to prevent the sample temperature from changing and to eliminate the error due to the temperature of the electric circuit, especially the signal processing device. Set the component conversion coefficient for the main components of rice required by the same method, and measure the content rate.

Next, when the reflected / transmitted light amount combined use selection button 56D and the automatic operation button 56B are pressed (step S2
), The near-infrared spectroscopic analyzer 1 is energized and the light source 4 is turned on.
Then, in order to keep the apparatus 1 at a constant temperature, a temperature controller 77
Is operated (step S3), and the signal from the temperature detector 78 (step S4) turns on the motor 63 to turn the roller 2 on.
Each of 0, 21, 22, 23 and the rotating roller 49 is rotated (step S4), and then the electromagnet 32 is energized to vibrate the vibrating frame 28 (step S6).
The filling position sensor 50 detects that the sample container 33 is located at the filling position of the sample rice (step S7), and then the level meter 19 detects whether the sample rice is supplied to the supply hopper 15. , (Step S8), the sample rice in the supply hopper 15 is discharged substantially continuously at a constant flow rate by the rotation of the rotary blades 17 of the rotary valve 18.

In some cases, the amount of sample rice supplied is too large to be sufficiently crushed by the rollers 20, 21, 22, 23. Therefore, the load of the electric motor 63 is detected, and the rotation speed of the rotary blade 17 of the rotary valve 18 is changed by the load to control the supply amount of the sample rice. The sample rice crushed by passing between the rollers 20 and 21 is further used for the fine powder roller 2
It is passed between No. 2 and No. 23 and crushed into fine particles of 50 microns or less (step S10), and the crushed sample rice flows down on the vibrating perforated wall plate 30 to be subjected to the grain selection function (step S).
11). Particles of 50 microns or less penetrating through the through holes of the perforated wall plate 30 flow down onto the sample container 33, and excess sample rice that rises above the sample container 33 flows down into the receiving box 53. The coarse particles remaining above flow out to the receiving box 53 through the coarse particle outlet 27 (step S12).

The motor 45 is operated to move the sample container moving body 34 in response to the signal from the level meter 19 which detects that the sample rice supplied into the supply hopper 15 has been completely discharged (step S13). During the movement process,
The swelling sample rice in the sample container 33 is compressed and filled in the sample container 33 by the rotating roller 49, and an excessive amount of the sample rice is allowed to flow into the receiving box 53 with the upper surface being a flat surface. When the measuring unit position sensor 51 detects that the position has been reached, the operation of the motor 45 is stopped (step S14), and the stop signal causes the measurement of the near-infrared spectroscopic analyzer 1 to start.

First, the spectroscopic element 79 in the filter using the diffraction grating is rotated to select the designated arbitrary wavelength band. In the filter shown as another example, the filter 6 is rotated by the electric motor 10 to select the designated wavelength band. That is, the irradiation light from the light source 4 is irradiated onto the sample rice in the sample container 33 as near-infrared light in the wavelength range through the filter, and the transmitted light amount detector 9C for detecting the transmitted light amount transmitted through the sample rice is detected. The signal is transmitted to the control device 59, and the reflected light amount reflected from the sample rice to the integrating sphere 7 is detected by the reflected light amount detector 9
It is detected by A and 9B, and the detected value is notified to the control device 59 (steps S15 and S16).

Further, when the measurement is carried out in a plurality of wavelength bands, the spectroscopic element 79 is rotated together with the communication of the detection signals of the detectors 9A, 9B and 9C, or the electric motor 10 is operated to rotate the filters 6. Are sequentially performed to detect the amount of transmitted light and the amount of reflected light obtained from the characteristics of the near-infrared light wavelength band obtained by the filter and contact the control device 59 (steps S17, 18). In each wavelength range, a half width of ± 10 nm is provided. It is confirmed whether the detection by each filter has been completed, and if it is not the predetermined number of times, the detection is performed up to the predetermined number of times (step S19).

Next, the temperature of the sample in the sample container 33 is detected by the temperature detector 65, and the detected value is detected by the terminal 66 and the crimping portion 6.
7 to the control device 59 (steps S20, S
21) Upon completion of the input of the detection signal, the motor 45 and the cleaning devices 25A to 25D are activated, and the cleaning devices 25A to 25D are activated.
The peripheral surface of each roller 20, 21, 22, 23 is cleaned by jetting high-pressure air with D (step S22), and the sample container moving body 33 is moved by the motor 45 toward the crushing chamber 24, and the filling portion position sensor 50 Detects that the sample container 33 has reached the predetermined position, the operation of the motor 45 is stopped (step S23).

In the process of moving the sample container moving body 34,
The cleaner 54A cleans the transparent plate 12 below the measuring unit 11. When the predetermined time of the timer T2 has passed, the cleaning device 25
The operation of A to 25D is stopped (steps S24 and 25), and the operation of the rotary blade 17 of the rotary valve 18 is stopped (step S26). When the sample container 33 reaches a predetermined position of the filling section, the electromagnet 48 is operated to reverse the sample container moving body 34 together with the motor 45 about the orbital shaft 38 by 90 °.
At this time, the cleaner 54B comes into contact with the transmitted light amount detector 9C for cleaning (step S27). The injection nozzle 52 injects high-pressure air into the sample container 33 to remove the sample rice and clean the sample container 33 (step S28).

After the injection nozzle 52 has been operated for a certain period of time, the operation of the injection nozzle is stopped (steps S29 and S30), the electromagnet 48 is stopped, and the sample container moving body 34 is returned to the normal position for the next sample measurement. Prepare (step S31). Transmitted light amount detector 9 connected to the arithmetic unit 60 of the controller 59
C, the content of the main component of rice is determined by the degree of absorption of near-infrared light by the sample rice obtained from the respective detection values of the reflected light amount detectors 9A and 9B and the temperature detection value of the temperature detector 65. It is calculated by the respective component conversion coefficients input to and the temperature correction value. The content rates of the main components are digitally displayed on the display 55A on the front surface of the cabinet 2, and are automatically printed and delivered by the printer 58 (steps S32 to S34).

When the manual operation button 56A is operated to fill the sample rice 33 into the sample container 33 from the outside for measurement, the turning handle 40 is pushed toward the measuring section 11 to bring the sample container 33 to the outside. The sample rice is pulled out from the supply part 57 and crushed in advance by another means to fill the sample container, and the upper surface of the sample container is pressurized to a flat surface, and then the sample container 33 is inserted into the guide groove 36 of the container pedestal 35. Is attached to the measuring unit 11 to measure.

In order to accurately obtain the detection value of the content rate, it is necessary to grind the sample rice to be filled in the sample container into small particles, but it is partial when the coarse particles selected by the sieve selection are excluded. Since the measurement results in measurement error, the crushing action should be 2
It is desirable to repeat it.

Further, since the measurement accuracy varies depending on the size of the particles and the variation in the size, the through holes of the porous wall plate 30 used in the crushed particle selection device 26 must be those which give desired particles. . Similarly, when the sample rice is crushed outside the near-infrared spectroscopic analyzer 1 and the sample rice is provided from the external supply unit 57 to the measuring unit 11 for measurement, the crushed particles are similarly sieved to obtain a desired size. Sample container 3
When 3 is filled, the measurement accuracy can be secured. The reason is that the size of the starch molecule is about 10 μm, and the starch molecule does not appear uniformly on the surface unless it is pulverized, and the vibration of the molecule due to near infrared light does not appear accurately.

In the above description, for the sake of convenience of description, the measurement is performed by the detection values of the transmitted light amount detector 9C and the reflected light amount detectors 9A and 9B, but the measurement is performed by either the reflected light amount or the transmitted light amount. It may be done. In addition, a temperature detector may be installed inside or outside the cabinet to detect the temperature.

Rotation of the spectroscopic element 79 or the motor 1
The inclination of the filter 6 and the irradiation optical axis by 0 can be set to an arbitrary angle, which is controlled by the controller 59. The filter 6 is basically used at a position orthogonal to the irradiation optical axis, but controls the incident angle to the filter when sliding by an arbitrary wavelength. The wavelength of the transmitted light is different between when the irradiation light is incident on the filter 6 at a right angle and when it is incident at an arbitrary angle, and when the incident angle becomes small, the irradiation light slides to the short wavelength side. Since the main wavelength of 70 nm generally slides in the near-infrared light of 1900 nm to 2500 nm, the filter 6 can be stopped at any angle in order to enable measurement in a continuous wavelength band. .
The dominant wavelength is almost the maximum transmission wavelength of near infrared light that is transmitted.

In this embodiment, the rotary valve 1
The sample rice is supplied at a constant flow rate and finely pulverized by incorporating 8 in the cabinet 2. However, there is also a method in which the sample rice is finely pulverized by the grain crusher and supplied to the sample container 33. This will be described with reference to FIG. Reference numeral 85 is a grain crusher, and a lid 87 is placed on an upper portion of a base 86, and the base 86 and the lid 87 are fastened to each other by a stopper 88. A wire net 90 is provided around the crushing chamber 89, and an impeller 93 directly connected to an electric motor shaft 92 of an electric motor 91 is rotatably mounted in the wire net 90.
A supply port 94 is provided substantially above the center of the impeller 93. Code 95
Is a vibration supply device, and the sample rice tank 96 is supported by a column 97. The discharge port 98 of the sample rice tank 96 is brought close to and connected to the vibration supply path 99 so that the grain feeding end of the vibration supply path 99 faces the supply port 94. Further, reference numeral 100 is a vibration device, and reference numeral 101 is a storage chamber. Is.

Next, the operation of the above configuration will be described. The sample rice in the sample rice tank 96 is fed from the outlet 98 to the vibration supply path 9
When the vibration device 100 is operated, the sample rice is quantitatively sent from the grain end of the vibration supply path 99 to the supply port 94 sequentially. The sample rice dropped from the supply port 94 into the crushing chamber 89 is struck by the impeller 93 rotating at high speed in the crushing chamber 89 against the wire net 90, and crushed into pieces (crushed into particles of 50 microns or less) there. The crushed sample rice is discharged from the through hole of the wire net 90 and stored in the storage chamber 101. Then, the stopper 88 is loosened to release the tightened state of the lid 87 and the base 86, the lid 87 is removed, and the crushed sample rice is taken out. Sample container 33 for crushed sample rice
And irradiate the sample rice with near-infrared light to measure the content of components that influence the taste of rice. The taste of rice can be expressed more accurately by expressing the evaluation value of the taste of rice by the content ratio of rice obtained by using the method of the present invention.

[0039]

The advantages of the present invention are as follows. That is, it has been difficult to measure with high precision and in a short time by the chemical quantitative analysis method of the content rate of rice components, which has been conventionally performed by some experts, which is cumbersome and takes a long time. The invention irradiates sample rice with near infrared light,
The component of rice can be calculated by calculating the component conversion coefficient and the absorption degree of near infrared light by the sample rice obtained from the reflected light amount, the transmitted light amount, or the combination of the reflected light amount and the transmitted light amount. Therefore, since the measured value is accurate and anyone can easily and quickly measure it, time loss such as sensory test for taste estimation and taste evaluation that relies on traditional intuition can be omitted, and various next steps It is possible to rationalize work and rice purchase management.

Near infrared light is obtained by a filter using a diffraction grating, and the degree of absorption of near infrared light by the sample rice is detected using this near infrared light. Scanning is possible, and it is possible to select a large number of suitable wavelength ranges in which a difference in absorption appears. Therefore, the content rate of rice components can be measured more accurately.

[Brief description of drawings]

FIG. 1 is a front sectional view of a taste measuring device.

FIG. 2 is an enlarged cross-sectional view of a main part.

FIG. 3 is a perspective view of a main part.

FIG. 4 is a front view of the device.

FIG. 5 is a block diagram showing the configuration of a control device.

FIG. 6 is an operation flowchart of the control device.

FIG. 7 is a diagram showing a temperature correction value for correcting the measurement value of amylose.

FIG. 8 is a conceptual diagram of another embodiment for performing continuous spectroscopy of near infrared rays.

FIG. 9 is a characteristic diagram showing the relationship between wavelength and absorbance.

FIG. 10 is a partially cutaway side view of the grain crusher.

[Explanation of symbols]

 1 near-infrared component analyzer 2 cabinet 3 slit 4 light source 5 reflecting mirror 6 filter 7 integrating sphere 8 window 9A, 9B reflected light amount detector 9C transmitted light amount detector 10 electric motor 11 measuring part 12 transparent plate 13 sample supply device 14 one side part 15 Supply Hopper 16 Opening 17 Rotating Blade 18 Rotary Valve 19 Level Meter 20,21 Roller 22,23 Fine Powder Roller 24 Grinding Chamber 25A-25D Cleaning Device 26 Sorting Device 27 Coarse Particle Discharge Port 28 Vibratory Frame 29 Leaf Spring 30 Perforated Wall plate 31 Side surface 32 Electromagnet 33 Sample container 34 Sample container moving body 35 Container cradle 36 Guide groove 37 Rack 38 Orbital axis 39 One side 40 Rotation handle 41 Other side 42 Bearing pedestal 43 Support fulcrum 45 Motor 46 Gear 47 Motor stand 48 Electromagnet 49 Rotation low -50 filling position sensor 51 measuring position sensor 52 jet nozzle 53 receiving box 54, 54B cleaner 55 display 55A to 55D display 56 operation push button 56A manual operation button 56B automatic operation button 56C transmitted light intensity measurement selection button 56D Reflection / transmission combination selection button 57 External supply unit 58 Printer 59 Control device 60 Computing device 61 Storage device 62 Signal processing device 63 Electric motor 64 Keyboard 65 Temperature detector 66 Terminal 67 Crimping part 68 to 76 Driving device 77 Temperature controller 78 Temperature detection Device 79 Spectroscopic element 80 Bran collecting lens 81 Slit 82 Input mirror 83 Reflecting mirror 84 Light receiving mirror 85 Grain crusher 86 Base 87 Cover 88 Stopper 89 Grinding chamber 90 Wire net 91 Electric motor 92 Electric motor shaft 93 Wing wheel 94 Supply port 95 Vibration Supply Device 9 6 sample tank 97 pillar 98 discharge port 99 vibration supply path 100 vibration device 101 storage chamber

Claims (9)

[Claims] 1. A near-infrared spectroscopic analysis device and a control device are provided, and the near-infrared spectroscopic analysis device obtains near-infrared light by a filter using a diffraction grating, and uses this near-infrared light to sample the near-infrared light. It has a means to detect the degree of light absorption and output the detected value, and the control device was determined from the relation between the content rate of the main components of rice and the degree of absorption when rice was irradiated with near infrared light. An apparatus for measuring a component content rate of rice, comprising: a unit that stores a component conversion coefficient; and a calculation unit that calculates and outputs a content rate of a component from the detected value and the component conversion coefficient. 2. The rice component content measuring device according to claim 1, wherein the near-infrared spectroscopic analysis device is equipped with a light receiver for receiving light reflected from the sample rice. 3. The rice component content measuring apparatus according to claim 1, wherein the near-infrared spectroscopic analyzer is equipped with a light receiver for receiving the light transmitted through the sample rice. 4. The near-infrared spectroscopic analyzer is provided with a light receiver for receiving the light transmitted through the sample rice and the light reflected from the sample rice, according to claim 1. Equipment for measuring the ingredient content of rice. 5. The rice component-containing material according to any one of claims 1 to 4, wherein the filter is capable of continuously spectrally analyzing a near infrared wavelength region. Rate measuring device. 6. The rice according to any one of claims 1 to 5, characterized in that an allowable wavelength range of an arbitrary wavelength set by a filter is ± 10 nm. Component content rate measuring device. 7. A temperature detector is arranged in a container filled with sample rice or in the vicinity thereof, and means for correcting the component content rate according to the detected temperature value is provided. Item 6. The rice component content measuring apparatus as described in any one of 6 above. 8. The device for measuring the content rate of rice components according to any one of claims 1 to 7, further comprising a crushing device for crushing the sample rice into finely crushed grains. 9. The method according to claim 1, further comprising a heating device and a temperature setting device for maintaining the measuring device at a constant temperature. Equipment for measuring the ingredient content of rice.