JPS61254807A - Analyzer for ground grain - Google Patents

Abstract

PURPOSE:To accurately discriminate the length of each grain, by providing plural photodetector which are oriented to grains passing through a detecting section and detecting the leading and tailing edges of each grain. CONSTITUTION:A transmissive window 9 is provided inside the groove 8a of a chute 8, through which grains are transported, and a light source 10 and plural photodetecting sections 12A-12E re respectively provided below and above the transmissive window 9. The photodetecting sections 12A-12E are oriented to an optional part of the length including the leading and tailing edges of a grain passing through the window 9. An arithmetic processing section connected with the photodetecting sections 12A-12E discriminates which photodetecting section detects the tailing edge of a grain when the photodetecting section 12A positioned to the first place detects the leading edge of the grain, and discriminates the length of the grain from the discriminated result. Numbers of length-wise grains of all grains and the ratio of each length-wise grains number to all grains are calculated and displayed in a display section.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a grain particle analyzer that distinguishes crushed grains in grains such as rice, wheat, etc., and calculates and displays the number of crushed grains and the fraction of crushed grains.

2. Description of the Related Art Conventionally, a light source and a light-receiving element are arranged oppositely above and below a transparent part provided in a flowing gutter, and the light-receiving element detects the transmitted light of the rice grains passing through the transparent part, and this detection signal is used to detect the rice grains. Japanese Patent Application Laid-open No. 59-2 regarding a crushing particle measuring device for determining the particle length of
This is shown in Japanese Patent No. 14742.

The particle crushing measuring device disclosed in Publication No. 2 is a device that ``irradiates light from a light source onto grains sliding down along an inclined downflow gutter, and detects the transmitted light m using a light receiving element'', which measures the properties of grains. Since the flow velocity differs depending on the grinding accuracy, moisture content, etc., the detected waveform will change even if the crushed grains are of the same length. Therefore, the detection signal of the light receiving element is corrected by the "grain speed correction device". I had to.

A technical object of the present invention is to provide a crushed grain analysis device that does not malfunction even if the speed of grain passing through a detection section differs, and does not require a correction device.

Means and Effects for Solving the Problems In order to solve the above technical problems, the present invention provides a detection section equipped with a light source in a conveyance path that transports grains at regular intervals in the grain length direction, In the detection section, light receivers are arranged in parallel that point at any part in the grain length direction, including the tip and the rear end of the grain passing through the detection section, and the light receiver pointing at the tip of the grain detects. When the tip of a grain passing through the sensor is detected, the grain length of the grain is determined from the signal output from the remaining light receiver, and the number of grains by grain length and the ratio to the total number of grains are calculated. For display purposes, each of the light receivers is connected to a display via an arithmetic and control unit.

As a result, when the grain reaches the detection section and a signal indicating a change in the amount of light received by the light receiver facing the leading edge of the grain is input to the arithmetic control device, the arithmetic control device detects the remaining light receivers. The grain length is determined based on the presence or absence of an input signal from the
Display the ratio on the display.

Actual vortex example Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional side view of the crushed grain analyzer, and 1 shows the entire crushed grain analyzer. 2 is a hopper, 3 is a storage part that is sloped slightly low below the hopper and has a large friction coefficient on the floor surface, 4 is a guide wall provided in storage part 3, and 5 is horizontal or oriented in the direction of grain progress. The feed gutter 5 is provided with a slight inclination, and the feed gutter 5 has a full height of 5 mm, which serves as a flow path for the grains. is provided. Moreover, the storage part 3 and the supply gutter 5 are provided so that grains can be moved through a communication port T.

6A and 6B are electromagnets 7A that give slight vibrations to the storage section 3 and the supply gutter 5;

7B is an adsorption plate attached to the FA magnets 6A and 6B. Reference numeral 8 denotes a tilted chute connected to the terminal end of the supply 6I5, and the chute 8 is provided with a groove 8a that serves as a flow path for grains. Reference numeral 9 denotes a light-transmitting window provided on the floor surface of the groove 8a, and the light-transmitting window 9 is formed in the shape of a slit with approximately the same length as the grain to be analyzed, for example, about 6 mI for rice grains.
(See FIGS. 2 and 3), a transparent material such as a glass plate is fitted to prevent clogging due to lumps or the like. Reference numeral 10 denotes a light source provided to illuminate the transparent window 9 from below.

11 is a detection head provided above the light-transmitting window 9, and the detection head 11 has one end (objective side) of the fiberscopes 12A to 12E facing the grains flowing down onto the light-transmitting window 9. In other words, the fiberscope 12A targets the leading end R1 of the grain in the traveling direction, the fiberscope 12B targets the 1/3 region R2, and the fiberscope 12C targets the leading end R1 of the grain.
/2 part R3, fiberscope 12D is the same 2/
The fiber scope 12E is provided at the rearmost portion R5 of the third section R4, respectively. 13A-13E
is the other end of fiberscope 12A to 12E (eyepiece side)
This is a light receiver consisting of a light sensor such as a phototransistor, which is installed in close proximity to the light source.

14 is an operation panel, and the number of crushed grains is displayed on the operation panel 14.

Digital panel meter that displays the crushing rate, total number of grains, etc.
Display unit 1 consisting of 15A to 15F (hereinafter referred to as Digispring)
5 is provided.

FIG. 4 is a diagram of the control plotter in this embodiment.
1 is a parallel interface, 17 is a microprocessor, and 118 is a memory consisting of ROM and RAM.

19 is an output buffer provided between the parallel interface 16 and the electromagnet 6, and 20 is an operation! an input buffer provided between the 814 and the parallel interface 16;
1 is an input buffer provided between the light receiver 13 and the parallel interface 16, and 22 is an output buffer provided between the parallel interface 16 and the display 15.

Next, the operation of the above embodiment will be explained.

Put grains, such as polished rice, into hopper 2, and
When the power supply and count "on" switch of 4 is turned on, the polished rice in the hopper 2 is sequentially transferred to the inclined high part of the storage section 3 where it vibrates by the electromagnet 6A and the suction plate 7A.
While being guided by the guide wall 3, the grains are led to the communication port T between the storage section 3 and the supply gutter 5, and finally reach the groove 5a provided in the supply gutter 5 one by one. The width of the groove 5a is formed to be slightly larger than the grain width of the polished rice, so that the polished rice grains (hereinafter referred to as particles) each have their longitudinal direction directed toward the groove 5a.
Electromagnet 6B.

It is conveyed to the chute 8 side by the vibration action of the suction plate 7B. The particles approaching the steep slope S are accelerated and flow down onto the grooves 8a of the chute 8, and slide down the grooves 8a at approximately equal intervals. Since the shape of the groove 8a is the same as the groove 5a of the supply 615, each particle does not rotate in the grain thickness direction and fall, but instead rotates in the longitudinal direction (grain length) of the grain as shown in FIGS. The particles flow down in a line with the direction (direction) facing the direction of travel, pass through the light-transmitting window 9, fall from the end of the chute, and are collected in a container or the like.

On the other hand, the end surfaces of the fiberscopes 12A to 12E arranged in parallel to the detection head 11 are connected to a light source 10 that passes through the light-transmitting window 9.
At the same time, the light beams are emitted from the other end of each fiberscope toward the light receivers 13A to 13E without being attenuated. Therefore, when the particles flowing down the groove 88 of the chute 8 reach the transparent window 9 and block the light beam entering the fiberscope 12A, the light receiver 13
A no longer detects the amount of light, and this change in the amount of light is converted into an electrical signal and input to an arithmetic and control unit, for example, the microprocessor-17.
performs the work of detecting the presence or absence of signals from the light receivers 13B to 13E. That is, at the moment when a signal is input from the light receiver 13A, when signals are input from all the remaining light receivers 138 to 13E (in a state where the light beam from the light source 10 is not incident on any of the fiber scopes 12A to 12E). !y
l> determines that the particles passing through the transparent window 9 are regular particles (perfect particles), and similarly, when signals are input from the light receivers 13B to 13D, it is determined that the particles are 2/3 crushed. When the signals from the light receivers 138 and 130 are input, the particles are crushed to 1/2, and when the signal from only the light receiver 13B is input, the particles are crushed to 1/2.
At the same time, the crushing ratio is calculated for the total number of grains, and the total number of grains, the number of grains for each crushed grain, and the crushing ratio are displayed on the display 15. are displayed one by one. For example, Digispring 15A has 2
/3 number of crushed grains and crushing ratio to total number of grains, Digispring 15B
For DigiSpring 15C, the number of crushed particles is 1/3 and the crushing rate is 1/2, and for DigiSpring 15D, it is 1/3.
The number of crushed particles less than 3 and their crushing rate, the total number of particles are displayed on the digital spring 15E, and the crushing rate of all the determined crushed particles are displayed on the digital spring 15F.

In this way, the particle length of the particles passing through the detection head 11 is determined, and the number of crushed particles, crushing rate, and total number of particles are counted, calculated, and displayed.
When it reaches 000 grains, the count is increased and the total number of grains is 1,
The number of crushed grains, the crushing rate of each crushed grain, and the crushing rate of all crushed grains for 000 grains are displayed on the display 15.

In this example, a light source was provided below the light-transmitting window, and a microprocessor was configured to determine the signal output from each light receiver when a grain intercepts the light rays from the light source. As shown by the dotted chain line, a light source may be provided above the moving grain, and when the grain passes through the detection section, each light receiver may detect the reflected light from the grain. In this case, the portion corresponding to the transparent window 9 is colored in a color different from that of polished rice, for example, black.

What is shown in FIG. 5 is an example in which particles can be separated according to particle length.

5b is the supply gutter 5 so that only 1/3 or less of the crushed particles pass through.
This is a notch obtained by cutting off the end portion of the groove 5a in a semicircular shape, and a flow path 23 whose upper end is formed into a funnel shape is provided below the notch 5b, and the inside of the flow path 23 is provided in the flow path 23. A light projector 24 (for example, a light emitting diode) and a light receiver 25 (for example, a phototransistor) are provided facing each other to detect the presence or absence of falling grains. The photoreceiver 25 has an input buffer 21 . It is communicated via parallel interface 16 to microprocessor-17.

26 is a certain period of time after the polished rice passing through the transparent window 9 is determined to be crushed grains (2/3 or 1/2), that is, the time when the crushed rice reaches the end of the chute from the transparent window 9. A movable gutter 27 extends to the end of the chute after elapse of, for example, 0.5 seconds. Reference numeral 27 is a solenoid that operates the movable gutter 26. 28 is a guide plate that separates 2/3 and 1/2 crushed grains, 2
9 is a solenoid that operates the guide plate 28, and 30 is a relay gutter suspended between the movable gutter 26 and the guide plate 28. The solenoids 27 and 29 are output buffers (not shown);
It is communicated via parallel interface 16 to microprocessor-17. In addition, in the case of this example, 2/
This is intended to analyze 3.1/2 crushed grains, and the tip,
Fiberscope 1 facing the rearmost and 2/3rd part
2A, 12E, and 120 are provided, and light receivers facing the eyepiece side ends of the fiberscopes 12A, 12E, and 12D are provided, respectively. Reference numerals 31 to 34 are drawer-shaped containers for collecting sorted and crushed particles. 31 is a container for crushing 1/3 or less, 32 is for grading, 33 is a container for crushing 2/3, and 34 is for crushing 1/2.

The rest of the configuration is roughly the same as that of the previous embodiment, so a description thereof will be omitted.

Next, an outline of the operation of this embodiment will be described.

Polished rice being conveyed on the groove 5a of the vibrating supply 15, 1
Particles smaller than /3 fall into the notch 5b provided at the end of the supply gutter 5 and are collected in the container 31 through the flow path 23, but the crushed particles falling through the flow path 23 are Changes in the light receiving area of the light receiver 25 when the light beam irradiated toward the light receiver 25 is interrupted are converted into electrical signals, and the changes are converted into electrical signals and sent to the input buffer 21 . The information is input to the microprocessor 17 via the parallel interface 16, the total number of grains and the number of crushed grains of 1/3 or less are added, and the crushing rate is calculated, and the results are displayed on the display 15 and stored in the memory 18. Since the notch 5b is provided in the vibrating part, the notch 5b and the chute 8
There will be no clogging of crushed particles between the starting end and the starting end.

When the polished rice from which 1/3 or less of the crushed grains have been removed passes through the transparent window 9, it is sized in the same manner as in the first embodiment.

They are classified into 2/3 crushed granules and 1/2 crushed granules and processed. If the particles passing through the transparent window 9 are of regular size, the microprocessor 17 commands the particles to
085 seconds), the solenoid 27 is energized and the movable gutter 2
6, the particles fall into the container 32, and when it is determined that the particles are 2/3 crushed, the energization to the solenoid 27 is stopped after a certain period of time (0.5 seconds) has elapsed. As the movable gutter 26 extends, the solenoid 2
9 is excited and tilts the transmission plate 28 toward the container 34, so that two-thirds of the crushed particles falling from the end of the chute 8 are transferred to the movable gutter 26. It flows down on the relay gutter 30 and is collected in the container 33 along the guide plate 28. Furthermore, if it is determined that the next particle that passed through the transparent part is 1/2 crushed, the solenoid 2
7 is not energized, the movable bridge 26 remains extended, and the other solenoid 29 is de-energized after a certain period of time (approximately 0.5 seconds), and the guide plate 28 is tilted toward the container 33. 1/2 of the crushed particles are introduced into the container 34.

In each of the above embodiments, a tilted chute is provided in the rear stroke of the vibrating supply gutter, and the detection head is disposed on the chute, but a rotating endless belt may be provided in place of the chute.

Further, the position of the fiberscope in the detection head may be changed as appropriate depending on the grain to be analyzed.

In addition, it goes without saying that the crushed grain analyzer of the present invention can also be used to analyze particulate matter other than grains.

Effects of the Invention As described above, the present invention provides a detection unit equipped with a light source in a conveyance path that transports grains at regular intervals in the grain length direction, and detects the leading and end portions of grains passing through the detection unit. Light receivers pointing at any part in the grain length direction including the part are installed in parallel, and when the light receiver pointing at the tip of the grain detects the tip of the grain passing through the detection part, the remaining part is detected. Since the grain length of the grain is determined and displayed based on the signal output from the light receiver, the light transmitting through the grain can be captured by the light receiver, and broken grains can be determined by the change in the amount of light received by the light receiver. Compared to conventional methods, there is no error in the determination results depending on the speed of grain movement, and any grain length can be instantly determined based on the presence or absence of output signals from each receiver, that is, the number of output signals. No malfunction occurs even without a correction device.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing an embodiment of the present invention, Fig. 2 is an enlarged perspective view of the same part, Fig. 3 is a longitudinal cross-sectional side view of Fig. 2, Fig. 4 is a control block diagram of the same, Fig. 5 is a FIG. 7 is a partially cutaway longitudinal side view showing another embodiment. 1... Grain crushing analyzer, 2... Hopper, 3...
・Storage part, 4... Guide wall, 5... Supply gutter, a...
・Groove, 5b...notch, 6A, 6B...electromagnet, 7
A, 7B...Adsorption plate, 8...Chute, 8a...
Groove, 9...Transparent window, 10...Light source, 11...Detection head, 12A. 12E...Fiber scope, 13A, 13E...
・Receiver, 14... Operation panel, 15... Display, 16
...Parallel interface, 17...Microprocessor-18...Memory, 19...Output buffer, 20...Input buffer, 21...Input buffer, 22...Output buffer 7.23.・Flow path, 24・
... Emitter, 25 ... Light receiver, 26 ... Movable gutter, 2
7... Solenoid, 28... Guide plate, 29... Solenoid, 30... Relay gutter, 31-34... Container. , d 3vA Fig. 2

Claims (4)

[Claims] (1) A detection section equipped with a light source is provided in the conveyance path that transports the grains at regular intervals in the grain length direction, and the detection section detects the leading end and the rear end of the grain passing through the sensing section. Light receivers pointing at any part in the grain length direction including the grain are installed in parallel, and when the light receiver pointing at the tip of the grain detects the tip of the grain passing through the detection part, the remaining light receivers Each of the light receivers is connected to a display via an arithmetic and control device in order to determine the grain length of the grain based on the output signal, calculate and display the number of grains for each grain length and the ratio to the total number of grains. A grain crushing analyzer characterized in that it has been contacted with. (2) The conveyance path is composed of a vibrating supply gutter and a tilted chute connected to the supply gutter, and the chute is provided with a light-transmitting window and a light source that illuminates the light-transmitting window from below. The crushed grain analysis device according to claim (1), wherein the detection section is formed by: (3) A fiber scope is interposed between the light transmitting window and each light receiver.
) Grain crush analyzer described in section 2. (4) Near the lower end of the chute, there is provided sorting means for sorting the grains sliding down the chute according to the grain length determined when the grains pass through the detection section. The crushed grain analysis device according to item 2) or item 3.