JP3559601B2 - Rice quality measuring device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a rice grain quality measuring device, and more particularly to a rice milling process for sample rice.
[0002]
[Prior art]
Conventionally, as an appearance quality measuring means for measuring the appearance quality of brown rice, a sampled rice is irradiated with visible light to measure transmitted light and reflected light, and color tone analysis is performed by calculation based on these measured values, and color adjustment is performed. There is known a configuration for measuring the quality of grains, immature grains, colored grains, dead rice, and the like.
[0003]
On the other hand, as an internal quality measuring means for measuring the internal quality of brown rice, a sample rice is irradiated with near infrared rays to evaluate the internal quality such as chemical component content or taste evaluation value, stickiness value, hardness, etc. Things are known.
[0004]
[Problems to be solved by the invention]
Conventionally, means for measuring the appearance quality of brown rice and means for measuring the internal quality have been individually established. In recent years, quality measurement including both the appearance quality and the internal quality has been required, but there has not yet been a comprehensive quality measurement that combines the appearance quality and the internal quality.
[0005]
In addition, there is a growing demand for sampling a part of brown rice during processing into brown rice or receiving brown rice, performing test rice polishing to white rice, and measuring the quality of both brown rice and white rice. When performing the test milling process, it is necessary to predict the milling process at the actual distribution processing site.
[0006]
Therefore, there is a technical problem to be solved in order to control the rice milling strength by focusing on the rice milling yield and to prevent the measurement accuracy of the external quality and the internal quality from being deteriorated due to irregularities in the milling process. In view of the foregoing, an object of the present invention is to solve this problem.
[0007]
[Means for Solving the Problems]
The present invention has been proposed to achieve the above object, and has a distributing device for dividing brown rice in a hopper into at least two systems, and an internal quality for receiving a sample of two systems and performing spectroscopic analysis in a non-crushed state. A measuring means and a rice milling means for receiving and polishing another rice sample are provided, and a supply means for supplying the white quality rice-milled by the rice milling means to the internal quality measuring means for measuring following the measurement of brown rice. A rice quality measuring device provided, the rice quality being formed such that the highest evaluation value among a plurality of internal quality measurement results measured for different milling yield values during rice milling is displayed and output as an appropriate evaluation value. A measuring device, a distributing device for dividing brown rice in the hopper into at least two systems, an internal quality measuring means for receiving a sample of one of the two systems and performing spectroscopic analysis in a non-pulverized state, and another sample A rice quality measuring device provided with a rice milling means for receiving and milling the rice, and a supply means for supplying the internal quality measuring means for measuring the white rice milled by the rice milling method following the measurement of brown rice, Means for storing the relationship between the preset internal quality evaluation value for the milled rice yield and means for measuring the actual milled rice yield obtained by the milling process, the actual milled rice yield and the internal quality evaluation value for the milled rice yield And a distribution device for dividing the brown rice in the hopper into at least three systems, and a rice quality measuring device formed so as to obtain an appropriate value that is the highest value of the internal quality evaluation value of the sample from the relationship and output the display. An external quality measuring means for receiving one sample of the system and measuring the appearance quality, an internal quality measuring means for receiving the other sample and spectrally analyzing it in a non-crushed state; A rice milling means for receiving and milling the sample, and providing supply means for distributing and supplying the appearance quality measuring means and the internal quality measuring means to measure the white rice polished by this rice milling after measuring brown rice. A rice quality measuring device comprising: a rice milling means, wherein the milling means is provided with milling intensity changing means capable of changing milling load or milling time to be longer or shorter, and adjusting the milling intensity changing means to change milling strength. In the control, a yield control mode for changing and controlling the rice milling intensity so as to maintain the rice milling yield constant, and a rice milling intensity constant control mode for holding the rice milling intensity at a constant level, and a selecting means for switching these modes are provided. It is intended to provide a rice grain quality measuring device provided.
[0008]
[Action]
The brown rice sample is distributed by a distribution device, one of which is supplied to the appearance quality measuring means and the internal quality measuring means or to the internal quality measuring means, and the other is supplied to the rice polishing means. The brown rice supplied to the appearance quality measuring means or the internal quality measuring means is measured for appearance quality or internal quality, and the measurement result is stored.
[0009]
On the other hand, the brown rice supplied to the rice milling means is subjected to rice milling to become white rice, and the white rice is supplied to the appearance quality measuring means or the internal quality measuring means which has finished measuring the brown rice, and the appearance quality or internal quality of the white rice state is measured. The quality is measured and the measurement is stored.
[0011]
According to the first aspect of the present invention, the measurement results of the respective internal qualities are stored while sequentially changing the rice polishing yield, and the highest evaluation value among them is displayed as the quality evaluation value of the sample.
[0012]
In the invention according to claim 2, the relationship between the preset internal quality evaluation value and the milled rice yield is stored, and from the actual milled rice yield obtained by the milling process, the proper value of the internal quality evaluation value of the sample , that is, The highest value of the internal quality evaluation value of the sample is predicted and displayed.
[0013]
According to the third aspect of the present invention, since the yield control mode and the constant rice milling intensity control mode can be switched by the selection means, the yield control mode is selected to bring the milled rice yield close to the target value. If the occurrence of broken rice is expected, select the rice milling intensity constant control mode.
[0014]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a conceptual diagram showing a rice quality measuring device, in which sample rice to be measured is put into a hopper 11 and distributed by a distribution device 12 into two systems, a measuring system 13 and a milling system 14.
[0015]
One of the two measurement systems 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. The other milling line 14 of the two systems is connected to milling means 18, and a three-way valve 19 is interposed in the milling line 14 to branch a metering line 20. Is connected to the measuring device 21.
[0016]
The appearance quality measuring means 16 is provided with a transport section 22, a detecting section 23 and a sorting section 24. The sample rice supplied to the external quality measuring section 16 is detected by the transport section 22 one by one. Then, the sample rice is irradiated with visible light to measure transmitted light and reflected light, and color tone analysis is performed by calculation based on these measured values. Then, the appearance grades of the sampled rice are determined into six types of ranks, ie, sized, immature, damaged, colored, dead rice, and broken rice, and sorted by the sorting unit 24 for each rank. At this time, the number of grains for each rank is measured by a counter in the sorting unit 24, and the grain weight for each rank is measured by the measuring device 25. The ratio for each rank, including the sizing ratio, is calculated from the measured values.
[0017]
In the internal quality measuring means 17, the sample rice is irradiated with near-infrared rays and spectrally analyzed in a non-pulverized state to measure the chemical components and the internal quality value inside the sample rice. The internal quality value is determined based on the standards of sensory tests and physicochemical tests of the Japan Grain Inspection Association, and the taste evaluation value, stickiness value, hardness and the like of the sampled rice are determined.
[0018]
On the other hand, the rice milling means 18 is provided with a rice milling intensity changing device 26 capable of changing the milling load or lengthening or shortening the milling time. By adjusting, the yield of milled rice (“milling accuracy”) can be changed and controlled. The sample rice milled by the milling means 18 is weighed by the measuring device 21 and then sent to the measuring system 13 by the transport system 28. A three-way valve 29 is interposed in the middle of the conveying system 28. By switching the three-way valve 29, the sample rice weighed by the measuring device 21 is sent to the measuring system 13 or the rice milling unit 18 is again operated. It is possible to perform the rice milling multiple times by returning to.
[0019]
Here, the control means 27 reads the measurement data of the appearance quality measurement means 16 and the measurement data of the internal quality measurement means 17, stores the data in the storage means 30, and displays the data on the display means 31 as needed. In addition, the rice milling yield is calculated from the ratio between the initial weight of the sampled rice weighed by the scale 21 and the weight after milling, and the rice milling yield changing device 26 is adjusted to control the change of the rice milling yield. The weighing data of the weighing device 21, the polished rice yield in the polished rice unit 18, the control output of the polished rice intensity changing device 26, etc. are stored in the storage unit 30 and displayed on the display unit 31 as needed.
[0020]
The control means 27 is provided with a correction means 46 for correcting the milled rice intensity and a selecting means 47 for switching a milled rice intensity control mode, which will be described later.
When measuring the quality of rice grains, a sample of brown rice is put into the hopper 11, and the sample rice is distributed by the distribution device 12 to the measuring system 13 and the milling system 14. The brown rice distributed to the measurement system 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 so that the appearance quality and the internal quality are reduced as described above. The measurement is performed, and each measurement data of the brown rice is stored in the storage unit 30.
[0021]
On the other hand, the sampled rice distributed to the milling line 14 is first sent to the measuring device 21 via the measuring line 20, and after the initial weight is measured, is milled by the milling means 18. The sample rice after milling is weighed by the measuring device 21 to calculate the milling yield as described above. If the milled rice yield has not reached the target value, the sampled rice is returned to the milling means 18 and milled again.
[0022]
At this time, the rice polishing intensity is corrected based on the measurement data of the appearance quality and the measurement data of the internal quality. In general, when the ratio of unripe grains of brown rice is high, the load on rice polishing decreases, and even when the moisture value increases, the load on rice polishing decreases. In such a case, the correcting means 46 calculates a correction value of the milled rice intensity to reduce the milled rice intensity, and outputs a change control signal to the milled rice intensity changing means 26 to change the milled rice intensity for the next time.
[0023]
FIG. 2 is a flowchart of the above-described rice polishing intensity correction control. A part of the brown rice sample is sent to the appearance quality measuring means 16 and the internal quality measuring means 17, and the appearance quality and the internal quality are measured respectively (steps 301 to 301). 304). The measurement result of the appearance quality and the measurement result of the internal quality are stored in the storage unit 30, and the control unit 27 calculates the milling intensity of each milling process scheduled to be performed a plurality of times based on each measurement by the control unit 27. 30 (step 305).
[0024]
Next, the milling intensity for the first milling process is set and a control signal is output to the milling intensity changing device 26 (step 306), and all the brown rice supplied to the milling means 18 is milled (steps 307 to 309). . Then, the milled rice yield is calculated by measuring the weight of the milled white rice (steps 310 to 311). If the milled rice has not been processed a predetermined number of times, the correcting means corrects the milled rice intensity (steps 312 → 313). ), Return to step 306, and perform rice polishing again.
[0025]
On the other hand, when the rice milling process has reached the predetermined number of times in step 312, the process proceeds to step 314, where it is determined whether or not the rice milling yield has reached the target value. When the rice milling yield has not reached the target value, the process returns to step 306.
[0026]
As for the timing at which the correcting means 46 corrects the milled rice strength, first, each measurement result of the appearance quality and the internal quality of the brown rice is obtained, and the standard milled rice is corrected from the first milling stage. There is a method and a method in which the first milling process is performed at the standard milling intensity in parallel with the measurement of the appearance quality and the internal quality of brown rice, and the milling intensity is corrected from the second milling stage. . In the former method, the accuracy of the polishing is improved, and an accurate rice yield can be obtained. In the latter method, the time of all the steps can be reduced.
[0027]
Then, the white rice which has reached the target milled rice yield is sent from the transport system 28 to the measurement system 13 as shown in FIG. Thereafter, similarly 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, respectively, and each measurement data is stored in the storage means 30.
[0028]
Here, the rice milling means 18 is provided with a yield control mode for changing and controlling the rice milling intensity so as to keep the rice milling yield constant, and a rice milling intensity constant control mode for keeping the rice milling intensity constant. In the former mode, for example, by giving 90% as a standard milling yield, the milling intensity changing means 26 is automatically adjusted to change and control the milling intensity, and the milling process is repeated 90 times so that the milling yield becomes 90%. Is controlled. In the latter mode, the rice milling intensity changing means 26 is not changed so that the rice milling load does not change, so that the rice milling intensity is kept constant.
[0029]
In the standard measuring operation, the former mode is selected by the selecting means 47, and when the occurrence of rice crushing is expected, the latter mode is switched by the selecting means 47 in order to know the milling load condition.
[0030]
On the other hand, the brown rice sample is polished a plurality of times by the polished rice unit 18, and is sent to the measurement path 13 from the transport path 28 shown in FIG. Thus, the taste evaluation value, the stickiness value, the hardness, and the like are determined, and these internal quality evaluation values are displayed on the display means 31 and stored in the storage means 30. The sample rice whose internal quality has been measured is returned to the rice milling means 18 again from the return line 48, and the next rice milling process is performed.
[0031]
Then, the rice milling and the internal quality measurement are performed a plurality of times while sequentially changing the rice polishing yield, and the highest evaluation value among a plurality of measured internal quality values is adopted as a proper evaluation value. The display unit 31 displays the milled rice yield and the appropriate evaluation value at the time of the cleaning.
[0032]
FIG. 3 is a flowchart of the above-described appropriate evaluation value display control. When a brown rice sample is put in, the weight is measured, and after the whole grains are subjected to rice polishing, the weight is measured again to calculate the rice yield (steps 401 to 408). The internal quality of the milled rice sample is evaluated by the internal quality measuring means, and the evaluation value is stored in the storage means 30 (steps 409 to 411).
[0033]
The above processing is repeated a plurality of times until the milled rice yield reaches a predetermined value. When the milled rice yield reaches a predetermined value, the milled rice yield and the internal quality evaluation value for each processing are stored in the storage means 30 (steps 412 → 413). ). Then, the highest internal quality evaluation value and the data such as the yield of the polished rice and the component value at that time are displayed on the display means 31 (steps 414 to 415).
[0034]
FIG. 4 is a graph of the taste evaluation value T ₀ with respect to the milled rice yield as an example of each data. In this case, the taste evaluation value is the highest 72 when the milled rice yield is 90%. The data of the maximum value is displayed on the display means 31.
[0035]
Here, for a plurality of varieties of rice, the relationship between the preset internal rice yield and the internal quality evaluation value has been obtained by experiments, and it has been found that this relationship does not change for the same variety of rice. From this, it is possible to predict an appropriate value of the internal quality evaluation value of the sample based on the actually obtained rice polishing yield.
[0036]
FIG. 5 is a graph showing, as an example, the relationship between the polished rice yield and the taste evaluation value of “Nipponbare” (new rice). When the polished rice yield is 90%, the taste evaluation value shows a maximum value of 70. When the taste evaluation value when the milled rice yield is 90% is set to 100 and the reduction rate of the taste evaluated value in other milled rice yields is graphed, a graph as shown in FIG. 6 is obtained.
[0037]
Here, when the actual milling yield is 92% and the taste evaluation value is 66 from the measurement result of the internal quality, the graph of FIG. 6 shows that the reduction rate of the taste evaluation value is 92% when the milling yield is 92%. Since it is 94, the highest value of the taste evaluation value is when the rice yield is 90%, and the taste evaluation value at that time is obtained as follows.
[0038]
(66/94) × 100 ≒ 70
That is, it can be predicted that the appropriate value of the taste evaluation value of the sample is 70. In addition, for other domestic rice such as "Koshihikari" and "Hitmebore", experimental data showing that the internal quality value shows the highest value when the milled rice yield is around 90% has been obtained. The relationship between the change in rice polishing yield and the reduction rate of the taste evaluation value, which is different only between varieties, shows almost the same tendency.
[0039]
FIG. 7 is a flowchart of the appropriate evaluation value prediction control. When a brown rice sample is thrown in, its weight is measured, and the rice polishing process is repeated until a predetermined number of times is reached (steps 501 to 507). After a predetermined number of milling operations, the weight of the sample is measured to calculate the milling yield (steps 507 to 509). From the actual milling yield obtained, the appropriate value of the internal quality evaluation value in the appropriate milling yield is calculated. Is displayed on the display means 31 (steps 510 to 511).
[0040]
The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.
[0041]
【The invention's effect】
As described in detail in the embodiment, the present invention supplies one of the distributed brown rice samples to the appearance quality measuring means and the internal quality measuring means, or to the internal quality measuring means, and supplies the other to the rice polishing means. I do.
[0043]
According to the first aspect of the invention, the measurement results of the respective internal qualities are stored while sequentially changing the polished rice yield, and the highest evaluation value among them is displayed as the internal quality evaluation value of the sample. The difference due to the difference can be eliminated.
[0044]
According to the second aspect of the present invention, an appropriate value which is the maximum value of the internal quality evaluation value of the sample is obtained and displayed from the actual rice yield obtained by the rice polishing, so that the correction when the rice is processed under a certain condition is corrected. Alternatively, correction can be made when a target rice yield cannot be secured.
[0045]
According to the third aspect of the present invention, the yield control mode and the constant rice milling intensity control mode are switched by the selection means. Therefore, normally, the yield control mode is selected to bring the milled rice yield as close as possible to the target value. Can be. If the rice milling intensity control mode is selected, the rice milling intensity is kept constant, and the milling load condition of the sampled rice can be known.
[0046]
Thus, the rice processing at the distribution processing site can be predicted by the rice processing of the sample rice.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing one embodiment of the present invention.
FIG. 2 is a flowchart of rice polishing intensity correction control.
FIG. 3 is a flowchart of proper evaluation value display control.
FIG. 4 is a graph showing an example of a measurement result of a taste evaluation value with respect to milled rice yield.
FIG. 5 is a graph showing a relationship between a rice evaluation yield and a taste evaluation value obtained by an experiment.
6 is a graph showing the rate of decrease in the taste evaluation value with respect to the rice polishing yield based on the graph of FIG.
FIG. 7 is a flowchart of proper evaluation value prediction control.
[Explanation of symbols]
11 Hoppers 12, 15 Distributing device 16 Appearance quality measuring means 17 Internal quality measuring means 18 Milling means 21 Weighing instrument 26 Milling intensity changing means 27 Control means 28 Transport system 30 Storage means 31 Display means 46 Correcting means 47 Selecting means

Claims (3)

A dispensing device that divides brown rice in a hopper into at least two systems, an internal quality measuring unit that receives one sample of the two systems and performs spectroscopic analysis in a non-pulverized state, and a rice milling device that receives another sample and performs rice polishing A rice quality measuring device provided with a supply means for supplying the internal quality measuring means for measuring the white rice processed by the rice polishing means after the measurement of brown rice , wherein different rice yields during the rice processing. a plurality of internal quality measurement results form the rice quality measuring apparatus to display outputs the highest evaluation value as the appropriate evaluation value among the measured relative values. A dispensing device that divides brown rice in a hopper into at least two systems, an internal quality measuring unit that receives one sample of the two systems and performs spectroscopic analysis in a non-pulverized state, and a rice milling device that receives another sample and performs rice polishing A rice quality measuring device provided with a supply means for supplying the internal quality measuring means for measuring the white rice processed by the rice milling means following the measurement of brown rice, wherein the rice quality is set with respect to a preset rice yield. Means for storing the relationship between the internal quality evaluation values, and means for measuring the actual milling yield obtained by the milling process, and from the relationship between the actual milling yield and the internal quality evaluation value for the milling yield , A rice quality measuring device that is designed to obtain and output the proper value that is the highest internal quality evaluation value. A dispensing device that divides brown rice in the hopper into at least three systems, an appearance quality measuring means that receives one sample of the three systems and measures the appearance quality, and a spectroscopic analysis under non-crushed state by receiving another sample Internal quality measuring means, and a rice milling means for receiving the remaining sample for rice milling, and the external quality measuring means and the internal quality measuring means for measuring the white rice polished by this rice milling after the measurement of brown rice. A rice quality measuring device provided with a supply means for distributing and supplying to the rice mill, wherein the rice milling means is provided with rice milling intensity changing means capable of changing the milling load or lengthening or shortening the milling time. Yield control mode for changing and controlling milling intensity to maintain milling yield constant, and milling intensity for maintaining milling intensity constant It provided a constant control mode, rice quality measuring apparatus provided with a selection means for switching these modes.

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