JPS6196443A - Paddy/rice discriminator - Google Patents

Abstract

PURPOSE:To prevent husking operation part from malfunction by forming a discriminating sensor for discriminating paddy from rice on the passage of grains applied husking action and then forming a discriminating means for discriminating whether an output from the sensor is included in a normal range or not before the arrival of the grains at the sensor. CONSTITUTION:When a power supply is turned on, a system is initialized, a gap between husking rolls is expanded and the discriminating sensor A starts to check on the basis of a program applied from a CPU30. Namely, an electric signal outputted from a photodetecting element 29 on the basis of light emission of a light emitting element 28 is compared with the output of a D/A converter 38 inputting the set value from a memory by a comparator 37 through a delay circuit 40, a grain detecting circuit 39, an analog multiplexer 38, and a peak value holding circuit 41. Since the grains do not pass the sensor A, whether a foreign matter is adhered to the sensor A or not can be detected and abnormality can be displayed on a display circuit 46. In case of normal state, a discriminating sensor checking relay circuit 45 is driven, and respective circuits are driven in the same sequence, and after checking the abnormality of the sensor A, rice hulling work is started.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a paddy/rice discrimination device for discriminating between paddy and rice.

(Prior Art) An optical sensor consisting of a light-emitting element, a light-receiving element, etc. is used to distinguish between paddy and rice.

(Problem to be Solved by the Invention) However, in the above-mentioned sensor, the detection surface is easily contaminated, so it is difficult to determine whether an increase in sensor output is due to foreign matter adhering to the grain or passing through the grain. This is likely to cause malfunction of the actuating part (for example, the adjustment part that adjusts the roll gap according to the half value).

(Means for Solving the Problems) The present invention aims to solve these technical problems, and has taken the following technical measures.

That is, a discrimination sensor (A) capable of discriminating between paddy and rice is provided in the path of the grains that have been subjected to the pleasing effect, and the grains are detected by the discrimination sensor (A).
) is provided with a determining means capable of determining whether the output from the discrimination sensor (A) is within the normal range.

(Operation) Before the grain to be discriminated reaches the discrimination sensor (A), it is determined whether the output output from the discrimination sensor (A) is within a normal range.

(Effect) At the time of judgment, since there is no discrimination sensor (A) K grain,
It can be easily determined whether the output from the discrimination sensor (A) is normal. Therefore, due to the discrimination between paddy and rice.

The actuating parts that operate under these conditions can also operate normally.

(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings.

First, to explain its configuration, the huller sorting device (6
) has a pleasure part (1) and a grain sorting part (5) in the upper part, and a wind sorting room (2) in the lower part. Then, the part where the explanation is given (1
) has a pair of left and right rolls that rotate in different directions mounted on internal shafts inside a cage with open upper and lower ends.

The grain sorting section (5) is provided with a cylindrical sorting tube (3) which has a large number of depressions aCJ formed on its inner circumferential surface and is configured to be rotated by a drive wheel body Ql). Inside the sorting tube (3), there is a conveying helix (6) rotatably installed on the sorting chamber machine frame.
), a supply conveyance device Q4) consisting of a receiving gutter α installed below each helix, and a finished rice conveying device Qe consisting of a conveying helix αQ and a receiving gutter (not shown). The conveying end portion of the finished rice conveying device 0119 is connected to the finished rice guide cylinder α.
A guide path (8) that communicates with the finished rice recovery device (7) via a ladle.
).

The supply conveyance device Q41 is configured to collect the mixed grains that have been subjected to the sorting action in each sorting tube (3) and feed them again into the sorting tube (3) from the end of the conveyance, and the mixed grain conveying device Q41 is configured to collect the mixed grains that have been subjected to the sorting action in each sorting tube (3) and feed them again into the sorting tube (3) from the conveyance end. It is used for both purposes.

The wind selection section (2) includes a suction device m installed from the front side of the lower part of the wind selection chamber.
It is composed of a mixed grain recovery device (1), the finished rice recovery device (7), a paddy recovery device Qp, etc.

The paddy collecting device Qυ has the shredding part (1) at one end.
), which communicates with the reducing device (tg) that refries the grain into the sorting cylinder (3).
) is configured to feed the uncollected grains that were not collected in the draining section (1) into a supply funnel (4) provided on the scraping section (1).

Incidentally, the collecting device Q1) is not provided, but the grain is pumped up using a blade provided at the sorting end of the sorting tube (3), and the pumped up grains are returned and merged into the threshing section (1). Good too.

αη is a thrower for frying the mixed grains collected by the mixed grain collecting device (a), and the end of the grain frying is provided at the end of the sorting part (5) on the shredding part (1) side. Looking into the room (c). '(a) is a thrower for frying the finished rice collected by the finished rice collecting device (7) to the outside of the machine.

A guide plate (E) is provided in the middle of the supply chamber (C) to form a falling path through which the mixed grains of paddy and rice can fall one by one. A discrimination sensor (A) for discriminating between paddy and rice is removably provided on the side wall of the supply chamber (C) at a position opposite to (E).

The discrimination sensor (A) consists of a light-emitting element (for example, a light-emitting diode) @ and a light-receiving element (for example, a phototransistor). The light emitted from the light-emitting element (for example, a phototransistor) hits the grain passing through the falling path. The light receiving element receives the amount of light transmitted through the grains, and outputs a voltage signal corresponding to the received amount of light, thereby distinguishing between paddy and rice.

To explain the block circuit in Fig. 2, (1) is the arithmetic control unit (hereinafter referred to as CPU) of the microcomputer, which includes a memory (not shown) containing control programs and data, and each other. It has an input port 0]) corresponding to input/output and an output port @03 (to) (to), and performs arithmetic and logical operations and comparison operations. The output port (2) is connected to a comparator (RO) via a D/A converter ω.
The input port On is connected to the output side of a comparator (b) whose input side is connected to an analog multiplexer (to). In addition, the input capo C31) outputs a voltage signal of "L" level when no grains have passed, and outputs a voltage signal of "L" level when grains have passed.
- It is connected to a delay circuit (for example, a CR timer) ring through a grain detection circuit wire which outputs a voltage signal of 1000 volts.

The input side of the peak value hold circuit is connected to the delay circuit via the contact (B) of the analog multiplexer (2).
The output side is connected to the input side of the comparator wire via a contact (8). and,
When the voltage signal output from the grain passage detection circuit is at the rLJ level, the contact (B) is inverted by the inverter (6) to become a voltage signal of rHjL/B, and becomes "ON", and the voltage When the signal is “H” level, the inverter (6)
is inverted and becomes an “L” level voltage signal, which turns the OFF
Becomes j.

The discrimination sensor (A) has a resistor (8) having a resistance value capable of emitting the amount of light during normal work (discriminating work between paddy and rice), and a resistance value capable of emitting the amount of light corresponding to the paddy voltage. Resistors (3) are provided in parallel and connected to the light emitting element ′ (to), and these resistors (R1χ) can be arbitrarily switched by a changeover switch 03.

Note that the resistance value of the resistor (R) is greater than the resistance value of the resistor (R-1).Furthermore, the four sides of the light receiving element are connected to the input side of the delay circuit, and the amount of light received is determined by the light receiving element. The configuration is such that a corresponding voltage signal is output to the delay circuit.

The output port (2) is connected to the analog multiplexer (to) through an inverter, and when a voltage signal at the rLJ level is output from this port, it is inverted by the inverter. The voltage becomes "H" level and the contact (A) is turned 1 ON. And the output port 2 is a relay circuit that checks the discrimination sensor (A), and the output port (to) is a display circuit that displays an abnormality of the discrimination sensor (A). Connected to 1.

Next, the CPU00 has the following functions. That is, a drive command signal is output to (1) the discrimination sensor check circuit). At this time, the changeover switch (goods) is connected to the resistance (R-1
Switch to the side. (2) When the relay of the relay circuit (c) is excited, it outputs an "L" level voltage signal. (3
) Convert the analog quantity of the voltage signal output from the peak value hold circuit 01) into a digital quantity and import it. (4
) A ratio calculation is performed between the converted value during normal work and the setting value corresponding to normal work stored in advance in the memory. (
5) Compare and calculate the converted value and a set value corresponding to the rice grain voltage stored in advance in the memory. Note that it is also possible to provide an upper limit value and a lower limit value and calculate whether there is a converted value within this range. (6
) When the converted value during normal work is smaller than the set value, or when the converted value does not match the set value corresponding to the paddy voltage, a drive command signal is output to the display circuit. (7) When a voltage signal at the rHJ level is output from the grain detection circuit (to), it is input to the input port (to) and the number of grains is detected. (8) The digital value of the voltage signal output from the peak value hold circuit 01) is taken in and compared with a pre-stored paddy discrimination reference value to discriminate between paddy and rice.

(9) When a predetermined number of grains to be determined are counted, the shedding rate is calculated. 00 When a voltage signal of rHJ level is output from the grain detection circuit (to), "L" is output from the output port (g).
Outputs a level voltage signal. A voltage signal of rLJ level is output from the Qη output port (to). Sub-output port (
) outputs a voltage signal at rHJ level.

Next, the operation will be explained based on the main flowchart in FIG. 3 and the discrimination sensor check flowchart in FIG. .

First, it is determined whether the power supply is "ON" (step 310), and if it is "ON", the control system is initialized (step 520) and the gap between the depulping rolls is widened (step 530). Next, the "L" voltage signal output from the output port of the CPU ” (step 540). And switch (goods) and resistor (
The amount of light corresponding to the current flowing through the light emitting element (c)
Since the light is emitted from the light receiving element 1, the light-receiving element receives the amount of light and outputs a voltage signal corresponding to the amount of received light to the delay circuit @1. At this time, since the grain has not passed through the discrimination sensor (A) section, the "L" output from the grain detection circuit (to) is
``Reherno T Pressure'' 8- rHJ near u inverter 0
The contact (B) of the analog multiplexer (to) is turned "ON" by being inverted to a voltage signal of the same level. In this regard, the voltage signal outputted via the delay circuit 1 is transferred from the analog multiplexer (to) to the peak value hold circuit (
After being inputted to the comparator (b) through A1), -1 is compared with the analog value of the D/A converter (to) which receives the drive command signal from the output port (to) of the CPU (30). is converted into a digital quantity (step 550).After sono, C
"H" V output from the output port (to) of PU (1)
The t voltage signal of IV is converted into an "L" level voltage signal by an inverter (step 560), and the contact (A) is turned 1-OFF. Then, by CPU00,
The converted value and the set value stored in the memory are compared and calculated to determine whether the converted value is a normal value or an abnormal value (step 570), and if it is determined to be an abnormal value (i.e.,
Foreign matter such as dust has landed on the detection surface of the discrimination sensor (A),
If the amount of light emitted or received is small), the CPU (7) outputs a drive command signal to the display circuit 061 (step 580) to display an abnormality display (for example, abnormality alarm 9). Therefore, it is possible to easily know whether the discrimination sensor (A) is contaminated with foreign matter. On the other hand, if it is determined that the value is not abnormal, a drive command signal is output from the CPU (I) to the discrimination sensor check relay circuit (C) (step 590), so that the rLJ level is output from the output port ■. A voltage signal is output to turn the contact (A) ON (step S 100 ), and the changeover switch is switched to the resistor (R7) side. A corresponding amount of light is emitted from the light emitting element (c), so the light receiving element receives this amount of light and outputs a voltage signal corresponding to the amount of received light to the delay circuit. Since it has not passed, the grain detection circuit (to)
The voltage signal of [LJ-Bell outputted from
) to “ON”.

In this regard, the voltage signal output through the delay circuit is input from the analog multiplexer (to) through the peak value hold circuit (41) to the comparator (b), where it is input to the comparator (b) at the output port ( 2) receives a drive command signal from D/
It is compared with ana+1gr+1 of the A converter (to) and converted into a decile amount (step S110). Thereafter, the "H" level voltage signal C outputted from the output port (G) is converted into a rLJ level voltage signal by the inverter 14, and the contact (A) is set to l-OF Fj (step 51
20), the selector switch (reverse) is also switched to the resistance (R1) side. Then, C:PUfl compares and calculates the converted value with a set value corresponding to the line voltage stored in the memory, and determines whether this converted value is a normal value or an abnormal value (step 3180), If it is determined that it is an abnormal value (not a normal value) (i.e., the discrimination sensor (A)
(e.g., when there is an abnormality in the sensor circuit of
80) Display an abnormality. Therefore, the operator can easily know whether there is an abnormality in the discrimination sensor (A) itself. Note that it would be more convenient if the display was configured to distinguish whether there is an abnormality due to dirt on the discrimination sensor (A) or whether there is an abnormality in the sensor itself.

If there is no abnormality in the discrimination sensor (A), turn on the main switch that drives the motor (not shown) that outputs power to each rotating part of the huller sorting device (6), and then turn it on (
Step S140), the hulling operation (for example, initial setting of the roll gap, etc.) is started (Step S15).
0).

Then, when the grains are fed into the supply funnel (4), the grains are subjected to the shredding action by the shredding rolls of the shredding section (1), and then fall into the wind sorting chamber and are transferred to the mixed grains below. During this time, it is subjected to suction wind selection by a suction device Q'J. Then, the wind-selected mixed grains are fried into the supply chamber by the thrower αη, and are supplied to the conveyance start end on the side of the supply conveyance device. Thereafter, it is transported by the transport helix a4 and the receiver IX [1iQ3, and discharged from the end of the transport into the sorting tube (3), where it is subjected to a sorting action while being pumped up by the pipe α0.

In this sorting work, the finished rice is collected by the finished rice transport device OQ, and the mixed rice is collected by the supply transport device Q, and the finished rice is passed from the end of the transport through the finished rice guide tube to the guide path (8). ) - Uncollected grains are collected by the uncollected device (7), while the mixed grains are transferred to the JJC/II from the conveyance start end into the sorting cylinder (3) together with the supplied mixed grains and are re-sorted. be done. and uncollected grain (mainly paddy)
is discharged from the end of the sorting tube (3) and sent to the paddy recovery device C2η.
After being collected in the feed funnel (4), the grain is fried by a thrower (reducing device) C9).

In such work, a part of the mixed rice supplied into the supply chamber (c) falls down the falling path one by one, but at this time, light is emitted from the light emitting element (to) and the grains are separated. Because it's true,
The light receiving element receives the amount of light that has passed through the grain, and
A voltage signal corresponding to 11 is output.

And this voltage signal is passed to the analog multiplexer (to)
is input to the peak 1 direct hold circuit 01) and held there, but when a subsequent grain comes to the discrimination sensor (A) section, a voltage signal at the rHJ level is output from the grain detection circuit. , this information is taken into the input port 01) and counted, and the inverter θ4 outputs "L".
level is inverted and the contact (B) is set to 0FFJ. At this time, the voltage signal of the "L" level output from the output port w of the CPU- maintains the timing with the output from the grain detection circuit-. , the voltage signal at the rHJ level is reflected in the inverter and sets the contact (A) to 0N-1, so the voltage signal held by the peak value hold circuit 0υ also passes through this contact (A). The comparator (9) then converts the analog signal of the 0/'A converter (to) which receives the drive command output from the output port (material) and the voltage signal ( The analog i'11) is compared and converted to the decik/V amount'.Then, the CPU (
The converted value taken in step 7) is compared with the paddy discrimination reference value stored in the memory in advance to determine whether it is paddy or rice.

In such discrimination work, when the CPUI counts a predetermined number of grains, it calculates the dehulling rate (ratio of rice to the total number of grains) and displays it or sends a drive command signal for control (for example, adjusting the gap between dehulling rolls). is output from the CPU-.

Therefore, it is possible to detect dirt caused by foreign matter adhering to the discrimination sensor (A) and abnormalities in the sensor (A) itself before the hulling sorting process, making it possible to prevent erroneous detection of the sensor (A).

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a side sectional view of a rice hulling sorting device, Fig. 2 is a block circuit, and Fig. 3 is a side sectional view of a rice hulling sorting device.
FIG. 4 and FIG. 4 are diagrams showing flowcharts. (A) shows a discrimination sensor.

Claims (1)

[Claims] A discrimination sensor (A) capable of distinguishing between paddy and rice is installed in the path of the grains that have undergone the dehulling process, and the output from the discrimination sensor (A) is normal before the grains reach the discrimination sensor (A). A paddy/rice discrimination device provided with a judgment means capable of judging whether or not it falls within the range.