JPH08201300A - Rice-quality measuring apparatus - Google Patents

Abstract

PURPOSE: To obtain the evaluated value of quality corresponding to harvest by providing the means for measuring the internal quality and the apperance grade of sample rice, providing a means for correcting the evaluated value of the internal quality based on the measured result of the apperance grade, and obtaining the whiteness information of the sample rice. CONSTITUTION: Every one grain of sample rice undergoes color-tone analysis by an apperance- grade selecting means 16. The measured data of the rate of whole grains, the rate of immature grains and the like are sent into a control means 27 and stored in a memory means 30. A whiteness-degree detector 42 is provided in a detecting part 23, and the information of the whiteness degree of the sample rice is obtained. Then, the internal quality of the sample rice is measured by an internal-quality measuring means 17, and the evaluated values of the internal quality such as the evaluated value of taste, the value of glutinousness and the hardness are obtained. The actual taste, glutinousness value and the like are different based on the good or bad state of harvest. At the time of the bad harvest, the taste, glutinousness and the like become poor. Furthermore, at the time of the bad harvest, the immature grains become more, and the rate of the whole grains is decreased. Therefore, the evaluated value of the internal quality is corrected based on the measured data of the apperance grades of the rate of the whole grains and the like. The accuracy of the evaluated value of the quality is further enhanced by adding the whiteness information to the correction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice grain quality measuring device, and more particularly to correction of an internal quality evaluation value.

[0002]

2. Description of the Related Art Conventionally, as an appearance quality measuring means for measuring the appearance quality of brown rice, a sample rice is irradiated with visible light to measure transmitted light and reflected light, and a color tone is calculated by calculation based on these measured values. It is known that the composition is analyzed to measure the quality of sized, immature, colored and dead rice.

On the other hand, as an internal quality measuring means for measuring the internal quality of brown rice, the sample rice is irradiated with near infrared rays to evaluate the internal quality of taste evaluation value, stickiness value, hardness, etc., or chemical content. It is known to be configured to do so.

[0004]

Conventionally, means for measuring the appearance quality of brown rice and means for measuring the internal quality of brown rice have been individually established. In recent years, quality measurement including both the appearance quality and the internal quality has been required, but there is not yet a comprehensive quality measurement that fuses the appearance quality and the internal quality.

Further, although the taste, stickiness, etc. differ depending on whether the harvest is good or bad, the internal quality values measured by the internal quality measuring means do not change so much, and therefore the difference between the internal quality measurement result and the actual taste, stickiness, etc. may occur. become.

Therefore, there is a technical problem to be solved in order to measure the appearance quality and the internal quality of rice grains and to properly evaluate the internal quality depending on the quality of the crop. The purpose is to solve this problem.

[0007]

The present invention has been proposed in order to achieve the above object, and measures internal quality for measuring internal quality such as taste evaluation value, stickiness value and hardness of sample rice. With the provision of means, the appearance quality measuring means for measuring the appearance quality such as the sizing ratio and the immature grain ratio is provided, and the quality evaluation value obtained by the internal quality measuring means based on the measurement result of the appearance quality measuring means is used. It is intended to provide a rice grain quality measuring device provided with a correcting means for correcting, and a rice grain quality measuring device provided with a configuration for obtaining whiteness information of sample rice in the appearance quality measuring means.

[0008]

The appearance quality of the sample rice is measured by the appearance quality measuring means and sorted according to the quality such as sizing, immature grain, colored grain and dead rice. Further, the internal quality of the sample rice is measured by an internal quality measuring means, and the taste evaluation value, the stickiness value, the hardness degree, or the chemical component content is evaluated.

The internal quality value of the sample rice by the internal quality measuring means does not change so much depending on the quality of the pattern, but the value measured by the appearance quality measuring means changes greatly. Therefore,
By correcting the measurement result of the internal quality measuring means by the correcting means based on the measurement result of the appearance quality measuring means, the internal quality evaluation value corresponding to the quality of the pattern can be obtained.

[0010]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a conceptual diagram showing a rice grain quality measuring device. Sample rice to be measured is put into a hopper 11 and distributed by a distribution device 12 into two systems, a measurement system path 13 and a rice polishing path 14.

One of the two measurement system paths 13 is further divided into two systems by another distribution device 15, one is connected to the appearance quality measuring means 16 and the other is connected to the internal quality measuring means 17. It The other rice-polishing line 14 of the two lines is connected to a rice-polishing means 18, and a measuring system line 20 is branched in the middle of the rice-polishing line 14 with a three-way valve 19 interposed therebetween. Is connected to the scale 21.

The appearance quality measuring means 16 has a conveying section 22.
The detection unit 23 and the selection unit 24 are provided, and the sample rice supplied to the appearance quality measuring unit 16 is sent to the detection unit 23 one by one by the transport unit 22, and the sample rice is irradiated with visible light. Then, the transmitted light and the reflected light are measured, and the color tone is analyzed by calculation based on these measured values. Then, the appearance grade of the sample rice is judged into 6 types of ranks of sized, immature grain, damaged grain, colored grain, dead rice, and split grain, and the sorting unit 2
4. Sort each rank. At this time, the sorting unit 24
The number of grains in each rank is measured by the counter inside, and the grain weight in each rank is measured by the measuring device 25. The ratio of each rank including the sizing ratio is calculated from the measured values.

In the internal quality measuring means 17, the sample rice is irradiated with near-infrared rays and spectroscopically analyzed in a non-crushed state to measure the chemical components and internal quality values inside the sample rice. This internal quality value is determined based on the sensory test and physicochemical test criteria of the Japan Grain Testing Association, and the taste evaluation value, stickiness value, hardness, etc. of the sample rice are determined.

On the other hand, the rice-polishing means 18 is provided with a rice-polishing-strength changing device 26 capable of changing the rice-polishing load in magnitude or the rice-polishing time length. By adjusting the changing device 26, it is possible to change and control the rice polishing yield (“milling accuracy”). Then, the sample rice milled by the rice milling means 18 is weighed by the weighing machine 21 and then sent to the measurement system path 13 by the transport system path 28. A three-way valve 29 is interposed in the middle of the transfer system path 28, and by switching the three-way valve 29, the sample rice weighed by the weighing device 21 is sent to the measurement system path 13 or the rice polishing means 18 again. It is possible to carry out the rice milling process multiple times by returning to.

In the control means 27, the measurement data of the appearance quality measuring means 16 and the measurement data of the internal quality measuring means 17 are read and each data is stored in the storage means 30.
It is stored in and displayed on the display means 31 at any time. Further, the rice polishing yield is calculated from the ratio of the initial weight of the sample rice weighed by the weighing device 21 and the weight after the rice polishing, and the rice polishing yield changing device 26 is adjusted to change and control the rice polishing yield. The weighing data of the weighing machine 21, the rice yield in the rice polishing means 18, the control output of the rice polishing strength changing device 26, etc. are stored in the storage means 30 and displayed on the display means 31 at any time.

When measuring the quality of rice grains, a sample of brown rice is put into the hopper 11 and the distribution device 1
This sample rice according to 2 is measured system path 13 and polished rice path 1
Distribute into 4 and. The brown rice distributed to the measurement system path 13 is further distributed into two systems by the distribution device 15 and sent to the appearance quality measuring means 16 and the internal quality measuring means 17, where the appearance quality and the internal quality are as described above. It is measured and each measurement data of brown rice is stored.

On the other hand, the sample rice distributed to the rice-polishing line 14 is first sent to the weighing machine 21 via the weighing line 20, and after the initial weight thereof is measured, it is milled by the rice-polishing means 18.
The sample rice after rice polishing is weighed by the weighing device 21, and the rice polishing yield is calculated as described above. When the yield of rice polishing does not reach the target value, the sample rice is returned to the rice polishing means 18 and the rice polishing process is performed again.

Then, the polished rice which has reached the target rice yield is sent from the conveying system path 28 to the measuring system path 13. After that,
Similar to the case of brown rice, the quality of the white rice sample is measured by the appearance quality measuring means 16 and the internal quality measuring means 17, and each measurement data is stored.

The sample rice for measuring the appearance quality and the internal quality may be either brown rice or white rice, and it is also possible to measure only brown rice or only white rice. Generally, the taste and stickiness of rice differ depending on whether it is a good harvest or a poor crop, but the chemical component analysis values by the internal quality measuring means do not change much, so there may be differences between the internal quality measurement results and the actual taste and stickiness. become. Therefore, it is necessary to change the internal quality evaluation value depending on the quality of the pattern.

In the present invention, the control means 27 is provided with the correction means 41 for correcting the internal quality evaluation value, and as will be described later, the correction means 41 is based on the measurement result of the appearance quality measuring means 16. 41 corrects the measurement result of the internal quality measuring means 17.

FIG. 2 is a flowchart relating to the correction of the internal quality evaluation value. When the sample rice is supplied, the measurement by each measuring means is started (steps 201 to 202).
First, the appearance quality measuring means 16 analyzes the color tone of each grain of the sample rice, sends the measurement data such as the sizing rate and the immature grain rate to the control means 27, and stores each data in the storage means 30 ( Steps 203-204).

Here, as shown in FIG. 1, the detecting unit 23 of the appearance quality measuring means 16 is provided with a whiteness detecting device 42 for obtaining whiteness information of the sample rice. As described above, the detection unit 23 irradiates the sample rice with visible light to measure transmitted light and reflected light, and performs color tone analysis by calculation based on these measured values. 42
Is configured to obtain whiteness information of sample rice by measuring particularly near 400 nm during color tone analysis. This whiteness information is also stored in the storage means 30.

Next, the internal quality of the sample rice is measured by the internal quality measuring means 17, and the data of the internal quality evaluation values such as the taste evaluation value, the stickiness value and the hardness degree are sent to the control means 27 and stored. Each data is stored in the means 30 (step 2)
05-206).

As described above, the actual taste and stickiness differ depending on whether or not the pattern is good, and the taste and stickiness deteriorate when there is no crop. Further, when the rice is not harvested, the number of immature grains increases and the sizing ratio decreases. Therefore, the internal quality evaluation value is corrected on the basis of the appearance quality measurement data such as the sizing ratio.

Now, when the taste evaluation value obtained by the internal quality measuring means 17 is T ₀ , the appearance quality measuring means 1
If the sizing ratio of the measurement result of 6 is α ₁ (%), the overall taste evaluation value T is corrected by the following equation (step 20).
7).

[0026] _{T = T 0 × α 1/} 100 ......... (1 type) For example, the taste evaluation value of 80% is in granulated percentage normal crop Class A rice to be harvested at some rural is 70 And When this type A rice was not cropped, the measurement result of the internal quality measuring means 17 was a taste evaluation value of 68, and the data was not much different from that of the normal year, but the measurement result of the appearance quality measuring means 16 was the grading ratio. Was reduced to 50%. Therefore, if the taste evaluation value at this time is corrected by one equation, the total taste evaluation value becomes 34. Further, the correction of the stickiness value and the like can be performed similarly to the taste evaluation value by giving the sizing ratio a specific function.

By adding the whiteness information obtained by the whiteness detecting device 42 to the correction, the accuracy of the internal quality evaluation value becomes higher. Therefore, the present invention can be variously modified without departing from the spirit of the present invention, and it is obvious that the present invention extends to the modified one.

[0028]

As described in detail in the above one embodiment, the present invention corrects the measurement result of the internal quality measuring means by the correcting means based on the measurement result of the appearance quality measuring means. For example, when the sizing ratio of the sample rice is lower than the standard, the internal quality evaluation values such as the taste evaluation value are corrected to be low.

In this way, the internal quality evaluation value of the sample rice is corrected according to the quality of the pattern, and the internal quality evaluation value according to the actual condition can be obtained. Further, when the appearance quality measuring means is provided with a structure for obtaining whiteness information of the sample rice, the accuracy of the internal quality evaluation value is further improved by adding the whiteness information.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart regarding correction of an internal quality evaluation value.

[Explanation of symbols]

 16 appearance quality measuring means 17 internal quality measuring means 27 control means 41 correcting means 42 whiteness detecting device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000197344 Shizuoka Machinery Co., Ltd. 1-4 Yamana-cho, Fukuroi-shi, Shizuoka Prefecture (72) Inventor Takao Sugiyama 1-40-2 Nisshin-cho, Omiya-shi, Saitama Biological specific industry Within the Technical Research Promotion Organization (72) Inventor Tomohiko Ichikawa 1-40, Nisshin-cho, Omiya City, Saitama Prefecture Within the Research Promotion Organization for Biological Specific Industrial Technology (72) Inventor Eiji Makino 1-40-2, Nisshin-cho, Omiya City, Saitama Prefecture (72) Inventor, Kotaro Kubota, 1-chome, 1-chome, Nisshin-cho, Omiya-shi, Saitama Prefecture (72) Institution, Research-promotion Organization, biological-specific industry technology (72) Inventor, Masaru Kashiwazaki, Nisshin Town, Omiya, Saitama Prefecture 1-Chome 40 2 Biotechnology-Specific Industrial Technology Research Organization (72) Inventor Hironori Uetani 1-Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery In the Technology Department (72) Inventor Sadakazu Fujioka, No. 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture Izeki Agricultural Machinery Co., Ltd. Inside the factory (72) Inventor Kazuki Matsushita 2-35 Jimmucho, Yao-shi, Osaka Kubota Kuhoji Co., Ltd. Inside the factory (72) Toshimichi Watanabe 1-8-1, Minamimagome, Ota-ku, Tokyo Inside Ket Science Institute, Inc. (72) Inventor, Jiro Warashina, Shizuoka Machinery Co., Ltd., 4-1, Yamana-cho, Fukuroi-shi, Shizuoka Prefecture (72) Inventor Michio Kawanaka, 1-4 Yamana-machi, Fukuroi-shi, Shizuoka, Shizuoka Machinery Co., Ltd.

Claims (2)

[Claims] 1. Appearance for measuring appearance quality such as sizing ratio and immature grain ratio while providing internal quality measuring means for measuring internal qualities such as taste evaluation value, stickiness value and hardness of sample rice. A rice grain quality measuring device, characterized in that it comprises quality measuring means and correction means for correcting the quality evaluation value obtained by the internal quality measuring means based on the measurement result of the appearance quality measuring means. 2. The rice grain quality measuring device according to claim 1, wherein the appearance quality measuring means is provided with a configuration for obtaining whiteness information of the sample rice.