JPS58115364A - Detector of split rice grain - Google Patents

Abstract

PURPOSE:To realize the quick and accurate automatic measurement for the number of split rice grains, by deciding the split of the rice grain after receiving the volume of light projected by a small spotlight and transmitted through the longer side of a rice grain by an image sensor. CONSTITUTION:The rice grains lined up via a rice sending groove 2 move in a row toward the lengthwise direction of an inclined rice chute 9 and then irradiated at a transparent part 10 of the chute 9 by the spotlight which is extremely thin compared with a rice grain from a light source 10. Then the beams transmitted through plural regions, e.g., 8 regions are stored by a solid state image sensor 12 connected to an optical fiber 15. The contents stored in each region are compared with the prescribed value to detect the grade of the rice grain in response to the degree of split. Then the number of split rice grains is measured automatically in a quick and accurate way by counting the grade signals. It is possible to measure automatically the ratio of split number in the same way.

Description

[Detailed Description of the Invention] The present invention is directed to improving a split-grain detection device for rice grains that detects cracks (copper tone) that occur in rice grains such as unhulled rice, brown rice, and polished rice, and measures the number of cracks or the mixing ratio. It depends.

Conventionally, this was a primitive, cumbersome, and inefficient detector that checked the number of rice grains by arranging rice grains on a transparent window of a perforated plate and visually calculating the pattern of light projected from below.

The present invention automates this electro-optically and accurately divides fat grains in a short period of time! Developed to measure grain ratio.

The basic gist of the present invention is to project a spotlight much smaller than a grain of rice, to receive the amount of light transmitted in the longitudinal direction of the rice grain over multiple areas of the grain surface using a solid-state image sensor, and to calculate the amount of each received light. The amount of light received in each memorized area is now in a state of barbarism. Therefore, any light source such as an incandescent lamp, a fluorescent lamp, or a laser beam oscillator tube is used to irradiate the beam of a spotlight, and a lens or small transparent window is used for light beams other than laser beams. Needs to be tied down.

The present invention will be explained with reference to embodiment figures. In Figure 1,
The symbol (1) in the figure is a box-shaped machine frame, and inside the skeleton machine frame (1), a vibrating grain feed trough (3) with grain feeding grooves (2) for flowing rice grains in a longitudinal manner is installed in a horizontal structure. A vibrating inclined grain feeding gutter (5) equipped with a grain feeding hopper (4!) is installed in parallel on the supply side of the grain feeding gutter (3), and the grain feeding gutter (6) is connected to the grain feeding gutter (6). In addition to connecting the inlets (7) of 3), an inclined grain feeding gutter (9) is provided with grain grooves (8) for flowing rice grains down in a longitudinal manner on the discharge side of the grain feeding gutter (8). The grain feeding groove (8) of the grain feeding gutter (9) is
) is provided with a transparent part (10) for detecting split grains, and a light source (11) and a solid-state image sensor (12) are disposed above and below the transparent part (10) in a substantially opposing manner.
(10) is formed so that the split grains are detected by the transmitted light of the rice grains passing through, and (18) is a guide wall erected on the pole surface of the grain feeding trough (5). In the figure, an optical lens (l) that magnifies in one direction is provided in front of the solid-state image sensor (1g), and the - side end of the optical fiber (16) is connected to the lens (14). At the same time, the other end of the 7-eyeper (15) is installed directly in the transparent part (lO) through the lens (16), and the fixed image sensor (12) is installed in the body part provided on the upper part of the machine frame (1). Particle detector (
17) in relation to and electrically connected to. The split grain detector (17) connects a solid-state image sensor (12) consisting of a large number of photodiodes to a grading calculation circuit (19) via a scanning circuit (29) and an amplifier circuit (18). The circuit (19) sets each grade value for distinguishing into arbitrary plural grades (four grades) according to the brightness of the amount of light @V? I)) is connected to K, and its output side is connected to the type calculation circuit (2B) via the storage circuit (21), and the output of the calculation circuit (0) is used to calculate the number of regular grains, the number of shell-split grains, Display of number of immature grains and total number of grainsIt (28
) (1), (25), and (26) respectively, and a rice grain position detection sensor (
27) through the timing circuit (28) to each of the circuits (
1g) (17) (19) (81) (紽). It should be noted that the sensor of the present invention can be arbitrarily selected from a solid-state image sensor, a doOD (solid-state device), or a camera tube such as a vidicon, and its setting position and direction can be freely selected.

Next, FIG. 8 shows the rice grains (
A spotlight is irradiated onto rice grains (paddy or brown rice) from a light source (11) installed at the bottom, and a number of photodiodes of a solid-state image sensor (12) magnify the amount of direct or polarized light that passes through the rice grains in one direction. FIG. 2 is a diagram showing the division of light received when light is received in a scanning manner on the grain surface through the optical lens (14), and an explanatory diagram of the carbonization state of the amount of received light for regular grains, split grains, and immature grains.

Side view (a) is a light-receiving section diagram of a rice grain CP), which illustrates the light-receiving surface divided into eight sections in the longitudinal direction of the grain surface and enlarged in one direction in a scanning manner. Side (b) ~ (,)
is the luminance of the amount of light received by the rice grains in an arbitrary predetermined bandwidth, using arbitrary multiple grades (immature grain = 4, split grain - 8, grain size = 2).
1) is a morphology diagram of the luminance of rice grains, which is divided into luminances of 1 to 1) and is carbonized by comparing the amount of light received in the 8 sections of the light reception classification diagram according to the luminance of each grade. On the side (1+), the shape of the amount of light received by the grain is contrasting between the first half and the second half, and the main part is formed by 1st grade brightness, so this rice grain is perfectly sized. can be identified. In both the side surface (c) and the side surface (d), the shape of the amount of light received by the grains is asymmetrical in the front and rear parts, and a part of it is reduced and is formed by an 8th grade brightness. It can be determined that these rice grains are split grains. On the side (e), since the shape of the amount of light received by the grains is formed by the overall brightness of the fourth grade, it is easy to identify that these rice grains are immature grains.

The sample paddy that has flowed down from the above-mentioned grain feeding hopper (~) to the vibrating inclined grain feeding gutter (5) is moved upward by the vibrating action of the grain feeding gutter (6) to the grain discharging port ( 6) into the grooves (2) of the vibrating grain feeding trough (8), the grains flow in columns in the grooves (2) due to the vibration action of the grain feeding trough (8), and the grains are also fed. The rice grains introduced into the transparent part (10) flow down the grooves (8) of the grain trough (9) in a rapid flow and pass through the transparent parts (10).
It is detected by a rice grain position detection sensor (27) installed nearby (see Figure 4 below), and the detection signal is inputted as a timing signal to each circuit on the detection side via a tie-in circuit (28). Depending on the input signal, the solid-state image sensor (
Each photodiode of Ig) receives the amount of light from each part of the grain surface of the rice grain in a scanning manner and inputs it to the transmission circuit (29), and each signal from the circuit (29) is amplified by the amplification@path (18). and input them to the grade arithmetic circuit (19). The arithmetic circuit (19) calculates the received light signals of the eight sections of the rice grain surface inputted from the amplifier circuit (18) using the setting signals of each approximate value inputted from the setting device (additional unit) to determine the grade. Each rice grain storage signal is evaluated separately, and the signal is converted into a logic signal and inputted to the storage circuit (4), and each rice grain storage signal emitted from the storage circuit (21) is inputted to the type calculation circuit (22) and calculated. In the circuit (22), each grade signal of each rice grain is displayed in each of the eight sections of the rice grain surface as shown in Fig. 8, and is calculated to detect each type of rice grain, and the signal is sent to each display. It is input and counted, and displays the number of grains on the display (28), the number of split grains on the display (24), the number of immature grains on the display (25), and the total number of grains. They are displayed on the display (26), and the total grain number display (cutting) and the split grain number display (
The shell split ratio is displayed by a ratio display (not shown) connected to each of the input side branchways of 24).

As described above, the shell-split grain detection device of the present invention can automate the shell-split detection electro-optically and accurately measure the number of shell-split grains or the shell-split ratio in a short time, and can utilize its detection function. In particular, it has the effect of smoothly and quickly achieving mass production of selected grains of high quality at all times.

[Brief explanation of the drawing]

The drawings are illustrations of embodiments of the present invention. FIG. 1 is a side sectional view of the apparatus, FIG. 2 is a plan view of its grain feeding trough, FIG. 8 is an explanatory diagram of the carbonization state of the amount of light received by rice grains, and FIG. 4 is its electrical circuit diagram. l Two-box machine frame 2: Grain feed groove 8, two vibrating shell troughs 4: Grain feeding hopper 5: Vibrating inclined shell rod 6
: Grain removal lower: Inlet 8: Grain flow groove 9: Inclined grain feeding trough 1O: Light on transparent part 1 for detecting split grains
1J: Solid-state image sensor 18: Guide I! 1
4: Optical lens 15: Optical fiber 16: Lens 17:
yJA split grain indexing detector 18: Amplifying circuit 19: Grade calculation circuit 20: Setting device 21: Memory circuit 22:
Type calculation circuit 28: Regular grain number display 24: ¥
fA split grain number grain number indicator 25: Unschooled 27: Detection sensor for rice grain position 28: Timing circuit 2
9=Scanning circuit patent applicant Figure 1 Figure 2 Figure 3 (1) I Figure 4

Claims (3)

[Claims] (1) A transparent part is provided on the bottom of the gutter, and the nine-feed grain gutter is horizontally suspended at a gentle slope, and a solid-state image sensor of a light amount detection device and a light source are arranged above and below the transparent part so as to be almost facing each other, The rice grains introduced into the transparent part are irradiated from a light source, and when the rice grains pass through, the amount of transparent polarized light is calculated by measuring the amount of transparent polarized light in multiple areas W on the grain surface.
A split grain rice grain detection device is configured to receive light at each of X and X, calculate the amount of each received light, store it in a storage circuit, and detect split grains based on the state of change in the amount of light received in each area stored. . (2) The solid-state image sensor is associated and electrically connected to a rice grain position detection sensor provided near the transparent portion, and the rice grain shell split according to claim (1). Detection device. (3) An output device in which the solid-state image sensor is provided with an optical lens that magnifies in one direction at a position in front of the solid-state image sensor.