JPH063416B2 - Grain quality judgment device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grain quality determination device, and particularly to improve the accuracy of quality determination by determining the skin misalignment state of the sized particles in a measured sample. The present invention relates to a quality determination device for obtained grain.

[Prior Art] A grain quality determination device irradiates each grain of a sample such as brown rice with light to detect the state of the light, such as transmitted light or reflected light, and adjusts the light quantity as the detected value. The quality of grains, immature grains, or cracked grains is determined. For example, each grain of brown rice is irradiated with light, and the quantity of transmitted light and the quantity of reflected light are detected by a light receiving element as a detection unit to determine the quality. Alternatively, each brown rice grain is partially irradiated with light from a slit or a small hole, and the amount of transmitted light is detected to determine the quality.

By the way, the paddy is made into brown rice by a grain huller, but there is an adverse effect that the brown rice has a skin shift due to factors such as improper adjustment of the roll interval of the grain huller. In addition, there are variations in the size of the paddy,
In order to efficiently carry out the hulling work, the hulling is carefully carried out, so that there is an adverse effect that the skin shift of the sample due to the trait in the quality judgment item is likely to occur. In this way, when the brown rice is misaligned,
This greatly affects the storability of brown rice, absorbs moisture during storage, becomes an entry point for mold, and causes a problem of degrading quality.

[Problems to be solved by the invention]

However, even though the skin misalignment of brown rice is an important item in terms of quality, since the skin misalignment was visually measured,
There is an inconvenience that a great amount of labor is required for the determination, the processing time becomes long, and the determination accuracy is lowered.

[Object of the Invention]

Therefore, the object of the present invention is to eliminate the above-mentioned inconveniences.
When the measurement work of the sample is completed, it is necessary to compare the reference distribution of the detected value of the sample with the distribution of the detected value of the sized particles in the measured sample to measure the skin deviation state of the sized particles in the measured sample. By providing a control unit that controls the quality of the sample, the accuracy of the quality determination of the sample is improved, the labor for determining the skin deviation of the sample in the traits in the quality determination item is reduced, and the quality deterioration occurs during the hulling operation and storage. An object of the present invention is to realize a grain quality determination device that can prevent the occurrence of grain.

[Means for solving problems]

In order to achieve this object, the present invention provides a grain for irradiating each sample grain of a sample to be transferred with light to detect the state of light and determining the quality of each sample grain by the detected value. In the quality determination device of, when the measurement work of the sample is completed, the reference distribution of the detection value of the sample and the distribution of the detection value of the sizing in the measured sample are compared to each other in the measured sample. It is characterized in that a control unit for controlling to determine the skin misalignment state of sizing is provided.

[Action]

According to the configuration of the present invention, the sample is measured for each grain, and the control unit determines the reference distribution of the detected value of the sample and the detected value of the sizing in the measured sample when the measurement work of the sample is completed. The distribution is compared to determine the skin misalignment state of the sized particles in the measured sample. This improves the accuracy of sample quality judgment,
Further, compared to the case where the skin deviation of the sample in the trait in the quality judgment items is visually measured, the judgment labor can be significantly reduced, and further, the deterioration of quality during hulling work and storage is prevented. Prevent it in advance.

〔Example〕

Embodiments of the present invention will be described in detail and specifically below with reference to the drawings.

1 to 5 show an embodiment of the present invention. In FIGS. 1 and 2, 2 is a grain quality determination device, 4 is a disc for holding, for example, brown rice S, which is a sample, at a predetermined position for each grain of brown rice, and 6 is a direction of arrow a for brown rice S. Is composed of a motor for rotating the disk 4 for transfer to the head, 8 is a head equipped with irradiation means and detection means for performing the functions of light irradiation and light amount detection, and 10 is a microcomputer for performing the functions of arithmetic processing. It is a control unit.

The quality judging device 2 holds each grain of the brown rice S supplied to the sample hole 12 of the disc 4 rotated by the motor 6 and transfers it in the direction of the arrow a, and the head 8 conveys one grain of each brown rice S. Each state is irradiated with light to detect the state of light, such as transmitted light or reflected light, and the control unit 10 determines the brown rice S based on the detected light amount.
The quality is detected for each grain. Note that reference numeral 14
Is a timing hole for specifying the detection time.

The head 8 incorporating the irradiation means and the detection means to fulfill the functions of light irradiation and light amount detection is constructed as shown in FIG. The disk 4 includes a sample hole 12 and a timing hole 14.
And a transparent plate 18 for preventing the falling of the small grains of brown rice S from the sample hole 12 and transmitting the irradiated light. On the substrate 16 side of the disk 4, a light source 20 as an irradiation means is provided so as to irradiate the entire surface of the sample hole 12 with light. On the transparent plate 18 side of the circular plate 4 facing the light source 20 and on the position side where the detected brown rice S moves, there is provided a transmitted light amount sensor 22 as a detecting means for detecting the transmitted light amount of each grain of the brown rice S. Set up. The transmitted light amount sensor 22 detects the light transmitted through the brown rice S as the transmitted light amount on the transparent plate 18 side. Further, on the substrate 16 side on which the light source 20 is provided, a reflected light amount sensor 24 that is a detection unit that detects the reflected light amount of each grain of each brown rice S is provided. The reflected light amount sensor 24 detects the amount of reflected light that is reflected by the skin shift of the brown rice S.

The light amounts detected by the light amount sensors 22 and 24 are input to the control unit 10. The control unit 10 determines the grain state for each brown rice S grain based on the reflected light amount and the transmitted light amount, and the quality for each grain of the brown rice S based on the reflected light amount and the transmitted light amount together with each grain state. In addition, when the measurement work of brown rice S is completed, the detected value of brown rice S, for example, the reference distribution of transmittance (shown by the solid line A in FIG. 5) and the sizing of the measured brown rice S Distribution of detected values (shown by broken line y in FIG. 5)
Is compared with the above to determine the measured skin shift state of the sized particles. The symbol X is the transport direction of brown rice S, B is the standard distribution of the transmittance of immature grains, and C is the standard distribution of the transmittance of dead rice.

Next, the operation of this embodiment will be described.

Each brown rice S supplied to the sample hole 12 of the disk 4 and transferred in the direction of the arrow a for each grain is the light source 20 at the position of the head 8.
Light is emitted from above. The irradiated light passes through the brown rice S to reach the transmitted light amount sensor 22 when the brown rice S does not have a skin shift, and is reflected by the skin shift when the brown rice S has a skin shift. It reaches the reflected light amount sensor 24. That is, the transmitted light amount sensor 22 detects the amount of transmitted light that passes through the brown rice S, while the reflected light amount sensor 24
Detects the amount of reflected light that is reflected by the skin shift of the brown rice S. At this time, the control unit 10 determines the quality of each brown rice S grain by the value of the transmitted light amount of the transmitted light amount sensor 22 and the value of the reflected light amount from the reflected light amount sensor 24, and when the measurement work is completed. The distribution of the transmittance, which is the detection value of the grain sizing of brown rice S, is detected, and the standard distribution of the detection value of brown rice S is compared with the distribution of the detected detection value of the grain sizing. To judge. More specifically, as shown in FIG. 5, the reference distribution of transmittance, which is the detected value of brown rice S (shown by the solid line A)
Against the distribution of the transmittance, which is the detected value of sizing in brown rice S (shown by the broken line y), and the two distributions do not match and are in contact with each other. It is determined that the skin is misaligned. In other words, it is possible to detect the degree of skin deviation depending on how much the detected distribution of sized particles deviates from the reference distribution.

As a result, since the quality of the sized particles in the measured sample can be further judged by the skin shift state, the accuracy of the quality judgment can be improved, and the labor at the time of character determination can be significantly reduced. In the hulling operation, hulling is suppressed when the brown rice S has a large amount of skin misalignment, and quality deterioration is prevented in advance.
In addition, since the state of skin deviation can be objectively detected, the degree of skin deviation can be taken into consideration during storage, and thus the quality deterioration of brown rice S can be prevented.

〔The invention's effect〕

As is apparent from the above detailed description, according to the present invention,
When the measurement work of the sample is completed, the standard distribution of the detected value of the sample is compared with the distribution of the detected value of the sized particles in the measured sample to determine the sized particles in the measured sample and the skin misalignment state. By providing a control unit to control, determine the skin misalignment state of the sized particles in the measured sample, improve the accuracy of the quality determination of the sample, reduce the labor of quality determination of the skin misalignment of the sample,
Further, the quality classification of grain can be subdivided. Further, it is possible to suppress the hulling state in the hulling operation, prevent skin slippage from occurring, and prevent quality deterioration during storage.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a plan view of a quality judging device, FIG. 2 is a side view of the quality judging device, and FIG.
The figure is a schematic explanatory view of the head, Fig. 4 is a diagram showing a reference distribution of dead rice, immature grains and sized particles, and Fig. 5 is a reference distribution of sized particles and a distribution detected by skin deviation of sized particles. FIG. In the figure, 2 is a quality determination device, 4 is a disc, 8 is a head, 10 is a control unit, 12 is a sample hole, 20 is a light source, 22
Is a transmitted light amount sensor, and 24 is a reflected light amount sensor.

Claims (1)

[Claims] 1. A grain quality determination device for irradiating each sample grain of a transferred sample with light to detect the state of light and determining the quality of each sample grain based on the detected value. When the measurement operation of the sample is completed, the standard distribution of the detected value of the sample is compared with the distribution of the detected value of the sized particles in the measured sample, and the skin deviation state of the sized particles in the measured sample is compared. A grain quality determination device, characterized in that a control unit for controlling the determination is provided.