JPS5946180A - Method and device for discriminating grain, body thereof is split - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for determining grain split grains, and in particular,
The present invention relates to a method and apparatus for identifying split grains by electrically detecting the amount of light that passes through and diffuses grains.

Most of the cracks in brown rice occur in one to several places in the horizontal direction, so when brown rice is irradiated with oblique light, the transmitted light makes use of the cracks to create brightness and darkness.

This is because the light that enters from an angle is reflected by the crack surface, making the part on the opposite side of the light source dark.

Therefore, it has been experimentally confirmed that the overall transmitted view is different depending on whether there is a shell crack or not. However, since the size of brown rice, color, texture, etc. of brown rice vary depending on the quality of the powder, it is not possible to reliably detect the presence or absence of splitting by simply detecting the amount of transmitted light.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for determining split kernels that can reliably identify split kernels even if the grains differ in size, color, and characteristics.

According to the present invention, a method of irradiating each grain with a light beam and measuring the diffused light beam to determine whether or not the grain is split,
A single grain of grain is irradiated with 11 perpendicular light beams and the amount of diffusely transmitted light is measured.Then, the same grain is irradiated with an oblique light beam and the amount of diffusely transmitted light is measured.The difference between the two measured transmitted light beams is then A method is provided for determining whether the grain size is regular grain or split grain by calculating this difference with the fzuf constant value.

As described below, in the method for identifying split grains of the present invention, grains are irradiated with a vertical light beam and an oblique light beam, and split grains are determined based on the difference between the diffused and transmitted light beams. Since it eliminates the nucleoplasm, it can be distinguished without being affected by the nucleoplasm.

Further, according to the present invention, there is provided a transfer plate for holding grains one by one, a first light source for irradiating a vertical light beam onto each grain of grain on the transfer plate, and a first light source for emitting a vertical light beam that diffusely passes through each grain of grain. A first light source 11 for measuring light years; a second light source that irradiates C-rays; a second light source that irradiates a grain of grain on a transfer plate; A second light 1+f-, a d'lll constant device measuring the light +11 of the ray, and a second light ht for this first light 1, an eye illumination device 1 for cereal grains.
An apparatus for discriminating split rice comprising a calculation circuit that displays the difference in the measured 111:l obtained by the measuring device, compares this difference with a predetermined value, and determines whether the grain is split or regular grain. is provided.

The present invention will now be described in detail in the form of an embodiment with reference to the accompanying drawings.

FIG. 1 shows a grain discriminating device according to an embodiment of the present invention, in which brown rice 2 is placed one grain at a time in a multi-board receiving hole 3 provided in a transfer plate such as a turntable 1, for example. . As the turntable 1 rotates, the brown rice 2 is transferred, for example, in the direction of the arrow. The brown rice 2 being transferred is illuminated by light sources (LQ, L2
), a vertical white ray and an oblique ray are irradiated, respectively. For example, when irradiated with vertical rays, the split rice 2□ does not show any effect, but when irradiated with oblique light, the portion behind the crack becomes a dark part of the split rice 22. These light rays diffusely pass through the brown rice 2, and the amount of transmitted light is detected by a photoelectric conversion element (S, s2). The photoelectric conversion elements (S□, s2) send respective signals corresponding to the amount of transmitted light received to the arithmetic circuit (A).
Send K. The calculation circuit (A) calculates these signals and determines whether the rice is split into a shell or not.

Referring to FIG. 2, a signal (1) indicating the amount of light transmitted by the vertically irradiated light beam through the grains of brown rice is sent from the first photoelectric conversion element (S□) to the delay circuit (D). The delay circuit (I) outputs a signal (1
2) is sent from the second photoelectric conversion element (S2), the signal (4,) is delayed until the signal (4,) is sent from the second photoelectric conversion element (S2).
) are simultaneously input to the subtraction arithmetic circuit (oo). The subtraction arithmetic circuit (01) calculates the difference (Δ
l), for example, the calculation Δe2l−12 is performed.

This calculation result is input to the comparison calculation circuit (0,), where the judgment reference signal (Δ
lo) and Δl〉Δl.

Therefore, it is determined that it is a split grain. Δl〈Δ/? (.

If so, it is determined that it is a grain, and a determination signal (d) is output.

Although the present invention has been described in the form of examples, the present invention is not limited to the form of the above-mentioned examples, and can be variously modified within the scope of the claims.

For example, in the embodiment described above, the configuration is such that the perpendicular light beam is irradiated and then the oblique light beam is irradiated, but it is also possible to do the opposite. In the above embodiment, the transfer plate was explained using the turntable 1, but the transfer plate may be a conveyor plate that is fed in a straight line, such as a belt conveyor.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating a schematic explanatory diagram of a shell-split grain discriminating device that is an embodiment of the present invention. FIG. 2 is a diagram illustrating a block diagram of an arithmetic circuit of the split grain discriminating device of FIG. 1; FIG. DESCRIPTION OF SYMBOLS 1... Transfer plate, 2... Grain, 3... Receiving hole, A... Arithmetic circuit, Sl... 1st operation ρ1 circuit, s2... 2nd computing circuit, L process, 1st light source, J-12...Second light source, ■〕・
・Delay circuit, 01゜02... Arithmetic circuit, ■. ...Discrimination standard value setting device, 4 representatives: Asamura and Akira

Claims (2)

[Claims] (1) Grain - A method of irradiating each grain with a light beam and measuring the diffused light beam to determine whether or not it is a split grain; (a)
A step of irradiating the grain with a perpendicular light beam and measuring the amount of diffusely transmitted light; (b) a step of irradiating the grain with an oblique light beam and measuring the scene of the diffusely transmitted light; C) The amount of diffused transmitted light due to the measured vertical light irradiation,
A method for determining grain splitting comprising the steps of calculating a difference between the amount of diffused transmitted light obtained by oblique light irradiation, and comparing the difference with a predetermined value to determine whether the grain is grain split or regular grain. (2) Grain - A transfer plate that holds grains one by one, a first light source that irradiates a vertical light beam onto a grain of grain on the transfer plate, and measures the amount of light of the vertical light that diffusely passes through each grain of grain. a second light source that irradiates a grain of grain on the transfer plate with an oblique light beam, and a second light amount that measures the sight of the oblique light beam that diffusely passes through the grain of grain. A measuring device calculates the difference between the measured values obtained by the first light amount measuring device and the second light amount measuring device for the grain, and compares the difference with a predetermined value to determine whether the grain is split or rectified. A shell-split grain discriminating device comprising a comparison circuit for determining.