JPH0778475B2 - Grain moisture calculation method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grain moisture calculation method.

Conventional technology Conventionally, while exposing the grains flowing down in the drying chamber to the hot air generated from the burner to dry them, a part of the drying grains is transferred by the transfer roll of the grain moisture meter. Are supplied to each of the detection rolls, and the supplied grains are squeezed between the detection rolls and crushed under pressure, and at the same time, the voltage value of the crushed grains is detected, and the peak value of the detected voltage value is detected. However, when the moisture content of the grain is detected, the detected moisture content value detected this time is a predetermined value, for example, 1% or more than the detected moisture content value detected last time. Even if the moisture value of rice is detected, the detected moisture value of green rice is cut and the detected moisture value is not used.

Problems to be Solved by the Invention For example, when a grain moisture measuring device is used for a dryer for drying grains, circulation drying is performed by exposing the grains flowing in the drying chamber to hot air generated from a burner to dry the grains. While repeating the above, the transfer roll of the grain moisture meter takes in and transfers a part of this drying and feeds it onto each detection roll. At the same time, the voltage value of this crushed grain is detected, and the peak value of this detected voltage value is used as the detected grain moisture value.At the time of this grain moisture detection, the detected moisture value detected this time is When a moisture value higher than the detected moisture value by 1% or more is detected, it is determined that the moisture value of green rice mixed in the grain during drying is detected. With the grain moisture analyzer that does not use the value, dry When the grain shape of the grain to be formed is a large grain and high moisture content grain, and the grain shape is a mixture of small grain and low moisture content grain, it is a large grain and high moisture content grain. When the moisture value of is detected, the peak value of this detection voltage value is high, and therefore the high value of this detection is cut, and when the moisture value of the small grain low moisture value grain is detected, this detection The peak value of the voltage value is low, and the moisture value of the grain being dried is determined only by the moisture value detected when this low value is detected.Therefore, the accurate moisture value of the grain being dried can be detected. There were times when I couldn't.

Means for Solving Problems The present invention relates to a transfer roll (1) to a detection roll (2),
The grain supplied to (2) is detected by the detection roll (2),
At the same time as it is squeezed between (2) and crushed under pressure, the voltage waveform (a) of this crushed grain is detected, and the detection roll (2),
The area of the detected voltage waveform (a) detected in (2) is calculated, and the waveform width from the beginning to the end of this detected voltage waveform (a) is taken as the base and this bottom and this detected voltage waveform (a)
The area of the rectangular shape (a) formed by the parallel lines passing through the peak value of is calculated, and the calculated area of the detected voltage waveform (a) is calculated with respect to the calculated area of the rectangular shape (b) obtained by each calculation. The ratio is calculated, and if the calculated ratio obtained by this calculation is greater than or equal to a predetermined ratio, the moisture value of the fine grain is detected, and if it is less than the predetermined ratio, it is determined that the moisture value of grains other than the fine grain is detected. The grain moisture calculation method is characterized by the following.

Action of the invention For example, in the case of using a grain moisture measuring device in the grain dryer, while repeating the cycle drying for exposing the grain flowing down in the drying chamber to the hot air generated from the burner to dry the grain moisture. The transfer roll (1) of the measuring instrument incorporates and transfers a part of the grain during drying and supplies the grain onto the detection rolls (2) and (2), and the supplied grain is the detection roll (2). , (2) is crushed and crushed at the same time, and at the same time, the voltage waveform (a) of this crushed grain is detected, the area of this detected voltage waveform (a) is calculated, and it is detected by the calculated area obtained by this calculation. The grain moisture value is used, but at the time of this grain moisture detection, the waveform width from the beginning to the end of the detection voltage waveform (a) is taken as the base, and this bottom and the peak value of this detection voltage waveform (a) are passed. Calculate the area of the rectangular shape (b) formed by the parallel lines and Therefore, the ratio of the calculated area of the detected voltage waveform (a) to the calculated area of the rectangular shape (b) obtained is calculated, and if the calculated ratio obtained by this calculation is equal to or higher than a predetermined ratio, the refinement of the grain during drying is performed. If the moisture value of the grain is detected, and if it is less than the predetermined ratio, the cutting process is performed assuming that the moisture value of green rice mixed in the grain being dried is detected, and only the detected moisture value of the refined grain is the grain being dried. Display as the displayed moisture value of the grain.

EFFECTS OF THE INVENTION According to the present invention, the areas of the detected voltage waveform (a) of the crushed grain and the rectangular shape (b) formed by the detected voltage waveform (a) are calculated, and the calculated area of each calculated area is calculated. The ratio is calculated, and the calculated ratio obtained by this calculation means that the moisture value of either the refined grain of the grain being dried or the green rice is detected, and only the peak value of the detected voltage waveform (a) is detected. And the detection voltage waveform (a) of the fine grain is a rounded triangular waveform, and the peak value is also low, so the detection for the rectangular shape (b) The ratio of the voltage waveform (a) is large, the detected voltage waveform (a) of green rice is a sharp triangular waveform, and the peak value is also high. Therefore, the detected voltage waveform (a) of the rectangular shape (b) is This is because the proportion is small and the grain shape is large and the moisture content is high. Even when the grains mixed with grains of small grain shape and low moisture content are being dried, the moisture value of the fine grain was detected for each of the large grain shape and the small grain shape, or the moisture content of green rice Whether or not the value has been detected can be accurately distinguished, and when the water value of green rice is detected, a cutting process is performed to always obtain an accurate water value.

Example In addition, a figure example demonstrates the grain water content measuring device (4) used for the dryer (3).

A storage chamber (6) is formed in the upper part of the machine wall (5) of the dryer (3), and a drying chamber (7) is formed below the storage chamber (6).
(7) is provided, and a delivery valve (8) is rotatably supported in the lower part of the drying chamber (7).
A grain collecting trough (9) having a transfer spiral installed therein is provided on the lower side, and an operating device (10) and a burner (for operating such as starting and stopping the dryer (3) are provided on the front side of the machine wall (5). 11) is provided with a burner case (12) and an exhaust fan (13) is provided on the rear side, and the grain stored in the storage chamber (6) is provided on the front side of the machine wall (5). A window (14) for visually observing the grains is provided, and a numerical value for displaying the accommodation amount is provided on the side of the window (14), and hot air generated from the burner (11) is directed to the drying chamber (7). A fuel pump (31) for supplying air into the burner (11) is provided outside the lower plate of the burner case (12), and the burner (11) is ventilated and sucked and exhausted by the exhaust fan (13). A hot air temperature sensor (32) for detecting the hot air temperature generated from the hot air chamber (33) is provided.

On the upper side of the storage chamber (6), there are provided ceiling girders (15), (15) and a transfer gutter (16) containing a transfer spiral, and this transfer gutter (16)
A supply port for supplying the transferred grains into the storage chamber (6) is provided in the central portion, and a diffusion board (17) is provided below the supply port.

A grain raising machine (18) is provided in the front part of the machine wall (5), and a bucket conveyor (19) belt is stretched between the upper and lower pulleys inside the upper part and the transfer gutter (16) starting end part. A throwing pipe (20) is provided between them to communicate with each other, and a supply gutter (21) is provided between the lower end and the end of the grain collecting gutter (9) to communicate with each other, and the grain raising machine (18) The grain moisture measuring device (4) is provided in the substantially central portion in the up-down direction, and the grains falling during conveyance to the upper part by the bucket conveyor (19) are received by the grain trough (22). It is configured such that it flows down in 22) and is fed into the grain moisture measuring device (4), and the upper part of the grain raising machine (18) and the machine wall (5).
Motors (34) and (35) are provided in the lower rear portion, and the respective motors (34) and (35) rotationally drive the respective parts of the dryer (3).

The machine frame (23) of the grain moisture measuring device (4) has a box shape, and the grain supplied from the flow trough (22) is provided in the upper part of the box body with a guide plate (24) and a transfer roll (1). ) With each other, the particles are picked up one by one into the spiral groove (25) provided on the outer peripheral surface of the transfer roll (1) and transferred along the spiral groove (25), and the flow-down guide plate (26) below the end portion. ) The residual grain that has been supplied to the upper part and not transferred in the spiral groove (25) leaks from the spiral groove (27) deeper than the spiral groove (25).

The grain supplied to the downflow guide plate (26) is downflow guided by the downflow guide plate (26), and the lower detection roll (2),
(2) It is supplied to the upper side, and while being squeezed between the detection rolls (2) and (2) on the outer peripheral surface while being sandwiched between the detection rolls (2) and (2), the moisture value of the crushed grain is also obtained. And a cleaning metal (28) having a scraper and a brush on the lower side of the detection rolls (2) and (2),
(28) is provided, and the cleaning metal (28) and (28) are configured to remove the crushed grains whose moisture value is detected and which adhere to the detection rolls (2) and (2). , (2
8) A slant plate (29) is provided on the lower side, and the slant plate (29) leaks from the detection rolls (2), the crushed grain whose moisture content has been detected by (2) and the spiral groove (27). The remaining grains to be run are guided down and supplied into the grain raising machine (18).

A motor (30) is provided on the upper part of the machine casing (23), and the motor (30) is configured to rotate by transmission of an electrical measurement signal transmitted from the operation device (10) at predetermined time intervals,
By the rotation of the motor (30), each unit of the grain moisture measuring device (4) is rotationally driven to detect the moisture value of the grain.

The operating device (10) has a box shape, and a start switch (36) for performing operations such as starting and stopping the dryer (3), a stop switch (37), and a finishing target moisture value on the surface plate of the box body. Target moisture setting depth (38), hot air temperature setting depth (39) for setting hot air temperature, and moisture content detected by the grain moisture measuring device (4) and the hot air temperature sensor (32) Display window (40) for alternately displaying and hot air temperature detected
Is provided, and the control device (41) and the green rice detection control device (42) are provided inside, and the setting knobs (38) and (39) are rotary switch systems, The setting scoop (38) is configured to set a finishing target moisture value when operated to a position as a finishing target displayed on the surface plate, and the setting scoop (39) is set to the storage chamber ( 6) The numerical value on the side of the window (14) displaying the amount of grains stored in the inside,
The hot air temperature is set by operating the same position as the numerical value displayed on the surface plate.

The green rice detection control device (42) is the grain moisture measuring device (4).
A-D converter (4) that A-D converts the detection value detected by
3), an input circuit (44) to which the converted value converted by the AD converter (43) is input, an input circuit (45) to which the operation of the setting selector (38) is input, and these input circuits (44), (4
5) A configuration with a CPU (46) that performs arithmetic and logical operations and comparison operations on various input values that are input from 5), and an output circuit (47) that receives and outputs various commands issued from this CPU (46). is there.

The control device (41) is an AD converter (48) for AD converting the detection value detected by the hot air temperature sensor (32), and the conversion value converted by the AD converter (48) is An input circuit (49) for inputting, an input circuit (50) for inputting operations of the switches (36), (37) and the setting knob (39),
The CPU (4) that performs arithmetic logic operations and comparison operations on various input values input from these input circuits (49) and (50).
6), an output circuit (51) for receiving and outputting various commands issued from the CPU (46).

The green rice detection control device (42) inputs the operation of the setting knob (39) and the start switch (36) to the control device (41), and the green rice detection control device (42) receives the setting arrow. When the operation of only (38) is input, the finishing target moisture value is set, the dryer (3) is started, and at the same time, the grain moisture measuring device (4) detects each crushed grain. Voltage waveform (a) is input, the area of this detected voltage waveform (a) is calculated, and the grain moisture value is detected by the calculated area obtained by this calculation.
When 36 grains stored in the CPU (46) are detected, the average value of the moisture values of the detected grains is calculated, and the calculated average value of the 36 grains obtained by this calculation is used as the detected and displayed moisture value of the grains. It is configured to display in the display window (40), and the setting knob (38)
When the finishing target moisture value set by operating is equal to the display moisture value detected by the grain moisture measuring device (4), the moisture value detection of the grain is stopped.

Also, the waveform width from the beginning to the end of the detected voltage waveform (a) is taken as the base, and the area of the rectangular shape (b) formed by this bottom and the parallel line passing through the peak value of this detected voltage waveform (a) is calculated. The calculation area ratio of the detected voltage waveform (a) to the calculation area of the rectangular shape (b) obtained by each of these calculations is calculated, and the calculation ratio obtained by this calculation is, for example,
The moisture value of the granules is detected if it is 70% or more stored in the CPU (46) and stored. If it is 70% or less, green rice is detected. Sometimes, it is cut and not used for calculating the average value of the 36 grains.

The control device (41) inputs the operation of the setting knob (38) to the green rice detection control device (42), and the control device (4)
1) Go to the setting knob (39) and the start switch (36)
Is input, the temperature of the hot air generated from the burner (11) is set, and the motors (30), (34), (35) of the dryer (3) rotate, and the dryer At the same time as (3) is started, the grain moisture measuring device (4) is started, and the fuel pump (31) is started so that the burner (11) is started.
The set hot air temperature is generated from the hot air temperature sensor (3
2) is detected by inputting this hot air, and this detected hot air temperature is compared with the set hot air temperature set by operating the setting knob (39), and if the difference is the same, the fuel The configuration is such that the amount of fuel supplied from the pump (31) to the burner (11) is changed, and when the moisture value detection of the grain is stopped,
The dryer (3) is automatically stopped.

By operating the setting knobs (38) and (39) of the operating device (10) to predetermined positions and operating the start switch (36), the dryer (3) is started and at the same time the burner (11) is started. The hot air is generated from the hot air chamber (33), the hot air is blown from the hot air chamber (33), the air is sucked and exhausted by the air blower (13), and the grains stored in the storage chamber (6) are stored in the storage chamber (6). While being flown from the drying chamber (7) from (6), it is exposed to the hot air and dried.
The feeding valve (8) feeds it to the lower side and supplies it into the grain collecting gutter (9), and the feed spiral (21) is supplied from the grain collecting gutter (9) by a transfer spiral in the grain collecting gutter (9). Through sublimation machine (18)
It is transferred and supplied into the transfer gutter (16) through the throwing tube (20) and is transferred to the upper part by the bucket conveyor (19), and is transferred by the transfer spiral in the transfer gutter (16). )
It is transferred and supplied from above to the diffuser (17), and this diffuser (17)
In the storage chamber (6), it is dried by repeating the cycle of being uniformly diffused and reduced, and during the drying, the bucket conveyor (19) conveys it to the upper part, and the bucket conveyor (1
The grain falling from 9) is received by the grain shed (22), and this grain is supplied from the grain gutter (22) onto the transfer roll (1) of the grain moisture meter (4).

This feed grain (1) and the guide plate (1) of the grain moisture measuring instrument (4), which is started by transmitting an electric measurement signal transmitted from the operating device (10) at a predetermined time interval, are transmitted. 2
With 4), the particles are picked up one by one into the spiral groove (25) of the transfer roll (1), transferred along the spiral groove (25), and passed from the end through the downflow guide plate (26) to the detection roll. (2),
(2) is supplied to the upper side, and the pressure rolls (2) of the crushed grains are detected at the same time as the detection rolls (2) and (2) are crushed by clamping while being fed with the supplied grains. The display moisture value of the grain is detected from the detected voltage waveform (a), and the detection process is repeated to obtain the same display moisture value as the finishing target moisture value set by operating the setting knob (38). When it is detected by the particle water content measuring device (4), it is automatically controlled by the control device (41) of the operating device (10) and the green rice detection control device (42) to automatically stop the dryer (3).

During this drying operation, the detected voltage waveform (a) is calculated by the calculated area of the detected voltage waveform (a) and the rectangular (b) calculated area formed by the detected voltage waveform (a).
The calculated area ratio is calculated. If the calculated ratio is equal to or higher than a predetermined ratio, the moisture value of the fine grain is detected. If the calculated ratio is equal to or lower than the predetermined ratio, the moisture value of green rice is detected. The moisture value is cut, and only the detected moisture value of the fine grain is set as the display moisture value, and the detected and displayed moisture value is displayed in the display window (40).

The ratio of the detected voltage waveform (a) is calculated by the area between the detected voltage waveform (a) and the rectangular shape (b), and the moisture value of the fine grain is detected or the moisture of the green rice is calculated by the calculated ratio. It is possible to always obtain an accurate moisture value by distinguishing whether or not the detected value is detected, cutting off the water content of the smelt green rice, and setting the detected moisture value of the fine grain as the display moisture value.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a block diagram, FIG. 2 is a flow chart, FIG. 3 is an enlarged side sectional view, FIG. 4 is an enlarged rear view, and FIG. Grain detection voltage waveform, FIG. 6 is a blue rice detection voltage waveform, FIG. 7 is an overall front view of a dryer with a partial cross section, and FIG. 8 is an enlarged front view of a part of the dryer. In the figure, reference numeral (1) indicates a transfer roll, and (2) indicates a detection roll.

Claims (1)

[Claims] 1. Grains fed from the transfer roll 1 to the detection rolls 2 and 2 are introduced between the detection rolls 2 and 2 and crushed at a narrow pressure, and at the same time, the voltage waveform i of the crushed grain is detected, The area of the detected voltage waveform a to be detected by the detection rolls 2 and 2 is calculated, and the waveform width from the beginning to the end of this detected voltage waveform a is taken as the base and the bottom and the peak value of this detected voltage waveform a are passed in parallel. The area of the rectangular-shaped square formed by the line is calculated, and the ratio of the calculated area of the detected voltage waveform a to the calculated area of the rectangular-shaped square obtained by each calculation is calculated,
If the calculation ratio obtained by this calculation is equal to or higher than a predetermined ratio, the moisture value of the fine grain is detected, and if it is equal to or lower than the predetermined ratio, it is determined that the moisture value of a grain other than the fine grain is detected. Grain moisture calculation method.