JPH0318748A - Instrument for measuring moisture content in grain - Google Patents

Abstract

PURPOSE:To exactly determine the moisture content of grains according to the kinds, production areas, etc., of the grains with the single instrument by converting the measured electric resistance value to the moisture content in accordance with the conversion data or conversion program stored in a memory device. CONSTITUTION:A measuring section 18 is provided in the instrument 10 for measuring the moisture content and further, a pair of electrode rolls 20 which rotate in the directions opposite to each other are disposed to face each other in the measuring section 18. The electrode rolls 20 are rotated by a driving device which is not shown. the grains are supplied between the electrode rolls 20 and the electrode rolls 20 are rotated. The grains can then be crushed as the rolls rotate. The respective electrode rolls 20 are connected to an instrument 22 for measuring the resistance value which measures the resistance value of the current flowing between the rolls 20 and makes conversion. The moisture content of the grains is thus detected. Namely, the moisture content is obtd. by selecting the corresponding program from the plural conversion programs stored in a RAM 78A of a memory card 78 according to the kinds of the grains to be measured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a grain moisture content measuring device, and more particularly to a grain moisture content measuring device that measures the moisture content by measuring the electrical resistance value of grains.

[Conventional technology]

BACKGROUND ART Moisture content measuring devices for measuring the moisture content of grains (for example, brown rice, white rice, paddy, wheat, barley, etc.) have been known.

This moisture content measuring device includes a pair of electrode rolls (measuring units) that are arranged to face each other and rotate in opposite directions. According to this moisture content measuring device, when grains are fed between the electrode rolls and the electrode rolls are rotated, the grains are crushed along with this rotation. When measuring the moisture content, electricity is passed between both electrode rolls, the electrical resistance of the current flowing between the electrode rolls through the crushed grains is measured, and the electrical resistance is converted to the moisture content. Detects the moisture content of grains.

By the way, the relationship between the electrical resistance value and moisture content of grains, that is, the conversion rate when converting the measured electrical resistance value to moisture content, is as follows.
It varies depending on the type of grain.

therefore,. In order to obtain accurate measurement data, conversion rates for multiple types of grains with high measurement levels are set in advance on the grain moisture content measuring device, and a selection switch corresponding to the type of grain is provided. The moisture content is measured using a conversion rate.

[Problem to be solved by the invention]

However, even grains of the same type have different volume resistivities due to different climatic conditions in the production area. Therefore, the conversion rate when converting the measured electrical resistance value to moisture content is
It is known that it varies depending on the grain production region, variety, crop, etc. Therefore, in order to obtain accurate measurement data, it is necessary to convert according to the grain production region, variety, and crop.
Moisture content must be measured. In this case, manufacturing a moisture content measuring device with a different conversion rate for each grain production region will increase the production cost.

Furthermore, conventional grain moisture content measuring devices cannot measure grains for which a conversion rate is not set in the main body. In this case, increasing the number of selection switches for selecting the type of grain to be measured would increase production costs.

The present invention was developed in consideration of the above facts, and provides a grain moisture content measuring device that can measure the moisture content of grains with different conversion rates using a single type of moisture content measuring device and that is low in production cost. The purpose is to obtain.

[Means to solve the problem]

In order to achieve the above object, the grain moisture content measuring device according to the present invention includes a resistance value measuring means for measuring the electrical resistance value of grains, and different conversion data or conversion means for converting the electrical resistance value into moisture content. The electrical resistance value measured based on the conversion data or conversion program recorded in a storage means selected from a plurality of storage means each storing a program and detachable from the main body of the grain moisture content measuring device. and a conversion means for converting into moisture content.

Further, different conversion data or conversion programs for converting the electric resistance value into moisture content can be determined depending on different production regions or types of grains that are not preset in the grain moisture content measuring device main body.

[Function] The grain moisture content measuring device according to the present invention measures the electrical resistance value of grains using a resistance value measuring means. In addition, different conversion data or conversion programs are stored in the plurality of removable storage means, and the user of the grain moisture content measurement device selects the most suitable storage means from among the plurality of storage means to determine the grain moisture content. Attach to the rate measuring device body. The conversion means converts the electrical resistance value of the grain into a moisture content using a conversion rate based on conversion data or a conversion program stored in the attached storage means.

Therefore, by preparing a storage means storing different conversion data or conversion programs corresponding to each grain production region, and selecting and installing the storage means according to the grain production region to be measured, it is possible to It is possible to accurately measure the moisture content according to the production area. Additionally, there is no need to manufacture grain moisture content measuring devices for each grain production area, reducing production costs. Can be done easily. In this case, it would be even more effective if memory aids were prepared not only for grain production areas but also for grain varieties, crops, etc.

In addition, for grains that are not preset in the grain moisture content measuring device, a storage means is prepared that stores conversion data or a conversion program determined for each type of grain, and the data is stored according to the type of grain to be measured. 1: By selecting and installing the @ means, it is possible to measure the moisture content of grains for which a conversion rate is not set in advance in the grain moisture content measuring device main body. For this reason,
It is not necessary to set all grain types in the grain moisture content measuring device, the number of switches for selecting grain types can be reduced, and production costs can be reduced.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a grain moisture content measuring device 10 according to this embodiment. The grain moisture content measuring device 10 is
At the top of the figure, there are provided a single-grain insertion slot 12 into which the grain to be measured is inserted, a multi-grain insertion slot 13, and a result output port 16 through which a printer paper 14 on which measurement results are printed is output.

A printer 15 (see FIG. 6) for printing measurement results on printer paper l4 is installed at a position corresponding to the result output port 16 inside the grain moisture content measuring device IO. Further, a power switch 17 is provided at the lower side of the grain moisture content measuring device 10.
and a pull-out lees receiving box 58 for discharging the grains that have been measured.

As shown in FIG. 2, a measuring section 18 is provided inside the grain moisture content measuring device 10, and further inside the measuring section 18, a pair of electrode rolls 20 facing each other and rotating in opposite directions are provided. It is arranged as follows. The electrode roll 20 is rotated by a manual drive (not shown). This electrode roll 20
When the electrode roll 20 is rotated while supplying grains between the two, the grains can be crushed along with this rotation. In addition, each electrode roll 20 is connected to an electrical resistance value measuring device 22 (see Fig. 6), and the electrical resistance value of the current flowing between the electrode rolls 20 through the grains when electricity is applied between both the electrode rolls 20. By measuring and converting, the moisture content of the grain can be detected.

A grain supply device W24 is arranged on the side of the measuring section 18. The grain feeding device 24 includes an endless belt 26. The belt 26 is wound around a pair of rollers 28 and 30. Further, the pair of rollers 28 and 30 are arranged so that the belt 26 is inclined at an inclination angle that is greater than or equal to the critical slip angle of the grains. In this example, the inclination angle is 4.
The positions of the rollers 28 and 30 are set so that the angle is 5 degrees.

A motor 34 is connected to the roller 28 located on the lower side via a chain 32. A drive control device 35 is connected to the motor 34 to control its drive (see FIG. 6). The belt 26 can be rotated by driving the motor 34, and the belt 26, rollers 28, 30
The motor 34 constitutes a belt conveyor that conveys the conveyed object upward (from the roller 28 to the roller 30 direction).

The belt 26 has a plurality of through holes 36, 38, and 40, each serving as a conveyance hole, formed in three rows in the width direction of the belt 26. Each through hole 36 , 38 , 40 is connected to the belt 26 .
The bells 1 and 26 are shaped at equal intervals along the entire circumference of the bells 1 and 26 along the rotational movement direction directed by the longitudinal force of the bells. Further, each of the through holes 36, 38, and 40 is shaped into an ellipse whose major axis extends along the longitudinal direction of the belt 26. Further, each through hole 36, 38, 40 is shaped to have a different size, with through hole 36 having a large diameter and accommodating large grains (e.g., barley), and through hole 38 having a medium diameter and accommodating large grains (e.g., barley). medium-sized grains (
For example, the through hole 40 has a size and shape suitable for small grains (for example, brown rice and white rice).

Directly above the belt 26, a single grain hopper 44 is supported by a support plate 42. The single grain hopper 44 is shaped like a bean paste cylinder with both upper and lower ends open, and grains such as brown rice, white rice, paddy, wheat, or barley are fed into the interior from the upper end opening through the grain single grain insertion port l2. can be invested. In the moisture content measuring device 10 of this embodiment, it is possible to select one of two types of measurement modes, a single-grain mode and a multi-grain mode, which will be described later. Grain is introduced. On the other hand, when the multi-grain mode is selected, the multi-grain hopper 45 is used. If there is a large variation in the moisture content of each grain, setting the single grain mode will crush and measure the grains one by one, allowing the user to judge the degree of variation in moisture content. . Also, 1 of the grain
If the multi-grain mode is set when there is little variation in moisture content among grains, multiple grains are crushed and measured at one time, so the moisture content can be measured efficiently.

The single-grain hopper 44 is arranged with its lower end opening close to the belt 26, so that the single-grain hopper 44
The grains thrown into the single grain hopper 44 are prevented from falling from the lower end opening by the belt 26 and are held in the single grain hopper 44. Further, the single grain hopper 44 is attached to the belt 26 along the support plate 42.
It can be slid in the width direction (arrow 8 directions in Figure 2),
Therefore, the lower end opening of the single grain hopper 44 can be selectively made to correspond to one of the through holes 36, 38, 40 formed in the belt 26. An opening/closing door 48 is attached to the vicinity of the lower end opening of the single grain hopper 44 by a hinge 46, and the grains introduced into the single grain hopper 44 can be discharged downward (ie, onto the belt 26). A return spring 50 is attached to the hinge 46, and always urges the opening/closing door 48 toward the closed position.

On the opposite side of the single grain hopper 44 with the belt 26 in between, a sorting plate 52 is arranged so as to be substantially in contact with the belt 26. The sorting plate 52 is provided with three through holes (not shown). Each through hole corresponds to each through hole 36, 3 formed in the belt 26.
8 and 40 and located on the locus of movement of each through hole 36, 38, and 40, respectively. Further, each through hole has a predetermined size smaller than each through hole 36, 38, 40 (for example, a size corresponding to immature grains or broken grains), so that each through hole 36, 38 , 40, grains smaller than the through-hole corresponding to each through-hole fall through the through-hole.

A saucer 54 is arranged directly below the through hole. One end of a pipe 56 is connected to the saucer 54, and the other end of the pipe 56 is connected to a lees receiving box 58.

A guide plate 60 is arranged below the roller 28 located on the lower side. The upper end of the guide plate 60 is connected to the roller 30.
It corresponds to the belt 26 wrapped around the belt 26, and the lower end is connected to the lees receiving box 58. Therefore, grains falling from the belt 26 can be guided to the lees receiving box 58.

On the other hand, a multi-grain hopper 45 is arranged directly above the electrode roll 20 of the measuring section 18. Like the single-grain hopper 44, the multi-grain hopper 45 has a substantially cylindrical shape with both upper and lower ends open, and grains such as brown rice, white rice, paddy, wheat, and barley are inserted into the interior from the multi-grain insertion opening 13. Grains can be added. This multi-grain hopper 45 is arranged with its lower end opening located directly above the opposing gap between both electrode rolls 20, and therefore a large number of grains charged into the multi-grain hopper 45 are placed in the lower end opening. can be directly supplied to the facing gap between both electrode rolls 20 from the electrode roll 20.

Furthermore, an operation panel 62 equipped with a plurality of switches is installed on the side surface of the grain moisture content measuring device 10. As shown in FIG. 4, a liquid crystal display 61 for displaying measurement results is arranged at the left end of the operation panel 62 in FIG. Two measurement changeover switches 65 are installed on the right side thereof.

The measurement changeover switch 65 can switch the measurement mode between a single grain mode and a multi-grain mode. By switching the measurement mode, the number of grains to be crushed and measured at one time by the electrode roll 20 can be set. To the right of the measurement selector switch 65 are two grain number setting switches 63.
is installed. The grain number setting switch 63 is used to set the number of grains to be measured when the measurement mode is single grain mode. Below the grain number setting switch 63 in FIG. 4 is a grain number display section 63 that displays the set grain number.
A is installed. Furthermore, six grain selection switches 64 are installed to the right of the grain number setting switch 63.

The grain selection switch 64 is composed of five selection switches 66 and one auxiliary switch 68. Each of the five selection switches 66 corresponds to one type of grain, and as shown in FIG. 4, they correspond to brown rice, white rice, paddy, wheat, and barley in order from the left end. When the selection switch 66 is selected, the type of grain to be measured is specified. The preliminary switch 68 does not correspond to a specific type of grain, and the corresponding grain is determined by a memory card 78 (to be described later) loaded into the main body of the grain moisture content measuring device 10.

There is a measurement start switch on the right side of the grain selection switch 64? O
A measurement switch 70 is provided, which is constituted by A and a measurement stop switch 70B. Grain moisture content measuring device 10
starts measurement when the measurement start switch 70A is turned on, and stops the measurement when the measurement stop switch is turned on during measurement. Four printer control switches 72 are provided to the right of the measurement start switch 70. In this embodiment, there are three types of display methods for displaying measurement results: average value display, data display, and histogram display, which can be specified by the printer control switch 72.

Below the operation panel 62 is a loading section 74 (Fig. 5 (1)
) is provided. The loading portion 74 is provided with a loading port 76 into which a memory card 78 (described later) is loaded, and a connector 74A having a plurality of protruding terminals is provided at the bottom of the loading port 76.
is installed. When the memory card 78 is loaded into the loading section 74, the connector 74A and the memory card 78 are electrically connected.

The memory card 78 includes a ROM 78A and a RAM 78B (see FIG. 6). The memory cards 78 include a selected memory card and a spare memory card. Fifth
As shown in FIG. 2, each memory card 78 is provided with a basic storage area 78D and a preliminary storage area 78E as a conversion program storage area 78C in which a conversion program is stored. The contents stored in the basic storage area 78D are common to the selected memory card and the spare memory card, and each conversion program of brown rice, polished rice, paddy, wheat, and barley corresponding to the selection switch 66 is stored in the basic storage area 78D. The preliminary storage area 78E of the selected memory card stores a conversion program for grains other than the grains displayed on the selection switch 66 and that are standardly produced in a specific region, such as beer barley. Further, the preliminary storage area 78E of the preliminary memory card stores a conversion program for grains other than those normally produced in a specific region, such as sake rice, glutinous rice, and naked rice. By the way, as explained above, even for the same type of grain, the conversion rate from resistance to moisture content differs depending on the region of production, so each memory card has a different conversion program depending on the region of production. It will be stored accordingly. Therefore, one memory card stores a conversion program for a specific region according to the type of grain. In addition to the conversion programs described above, the memory card 78 also stores a conveyance program for the belt 26 according to the type of grain, a printer control program, and the like.

Next, the connection of the control circuit 80, which is the conversion means, will be explained (see FIG. 6). The control circuit 80 includes a CPU 80A and an input/output port 80B, which are connected to each other by a bus 80C such as a data path and a control bus. Also, a connector 7 connected to the memory card 78 is connected to the bus 80C.
4A is connected. As a result, the memory card 78
When the memory card 78 is loaded into the loading section 74, the ROM 7 8A and RAM 7 8B stored in the memory card 78 are transferred to the bus 80.
Connected to C. Input/output port} 80B has operation panel 6
2 and the display 61 are connected to the electrical resistance value measuring device 22.

Further, a connector (not shown) for connecting the printer 15 and an external printer 82 is also connected to the input/output port 80B. Furthermore, the drive control device 35 is also connected to the input/output port 80B.

Next, the operation of this embodiment will be explained based on the flowchart shown in FIG. When measuring the moisture content of grain using the grain moisture content measuring device IO, first the memory card 78 corresponding to the production area of the grain to be measured is selected. The selected memory card 78 is loaded into the loading section 74 of the grain moisture content measuring device 10. Next, the power switch 17 is turned on to turn on the grain moisture content measuring device 10. The control circuit 80 is thereby activated.

After turning on the power, prepare for measurement using the following steps. First, the measurement changeover switch 65 selects whether the measurement mode is multi-grain mode or single-grain mode. Next, when the selected measurement mode is the single grain mode, the number of grains to be measured is set using the grain number setting switch 63. Then, the grain selection switch 64 is used to select the switch corresponding to the grain to be measured. If the type of grain to be measured is brown rice, white rice, paddy, wheat, or barley, press the corresponding switch from among the five selection switches 66, and if the type of grain to be measured is other than the above, press the preliminary switch 68. Press. Next, the display method when printing the measurement results on the printer 15 is specified using the printer control switch 72. This completes the selection of parameters necessary for measurement. Next, the grain to be measured is inserted into the grain moisture content measuring device 10. When measuring in the single grain mode, grains with a number of grains greater than the number of grains set by the grain number setting switch 63 are put into the single grain hopper 44.

When the grain is put into the single grain hopper 44,
Belt 26 located close to and directly below the lower end opening of 4.
The grains are held in the single grain hopper 44 by the grains, and each grain enters the through hole 36 (38, 40) of the belt 26. Furthermore, the grains that have entered the through hole 36 are held within the through hole 36 by the sorting plate 52. When measuring in the multi-grain mode, the number of grains to be measured at one time using the electrode roll 20 is charged into the multi-grain hopper 45. When the grains are introduced into the multi-grain hopper 45, the grains are directly supplied from the lower end opening to the opposing gap between the electrode rolls 20. When the preparation for measurement is completed, the measurement start switch 70A is turned on.

On the other hand, when the power switch 17 is turned on and the control circuit 80 is started, it executes step 100, and the control circuit 80 executes step 100, and sets the parameters required for measurement, such as grain type, measurement mode, number of grains to be measured, and printer output. Initial values such as how to display measurement results are read from the ROM 78A of the memory card 78.

The initial values of each parameter in this example are grain type: brown rice;
The measurement mode is single grain mode, the number of grains to be measured is 100, and the display method is average value display.

In step 102, the control circuit 80 is operated by the user from the operation panel 6.
It is determined whether each of the above-mentioned parameters has been set by operating each switch of 2. If the user has set the parameters, in step 104 the control circuit 80 changes the l/f parameter from the initial value to the parameter set by the user.

At step 106, is there a measurement start switch? Determine whether OA is turned on. If the measurement start switch 70A is not turned on, the process returns to step 102, and steps 102 to 106 are looped until it is turned on.

When the measurement start switch 70 is turned on, step 108
The control circuit 80 rotates the electrode roll 20 by a drive means (not shown), and the electrical resistance value measuring device 22 applies a voltage between the electrode rolls 20.

Control circuit 80 determines in step 110 whether the measurement mode is single grain mode.

If the measurement mode is the single grain mode as determined in step 110, the control circuit 80 controls the memory card 78 in step 116.
A conveyance program according to the type of grain stored in is executed, and the motor 34 is driven via the drive control device 35. When the belt 26 is rotated by the drive of the motor 26, since the belt 26 is inclined at an angle greater than or equal to the critical slip angle, some of the grains in the single grain hopper 44 are removed from the through holes 36.
Only the grains that have entered are held and conveyed upward by the movement of the belt 26 and moved toward the rollers 30. here,
The selection plate 52 on the movement trajectory of the through hole 36 has the through hole 36
Since a through hole is formed with a predetermined size smaller than the through hole, among the grains that have entered the through hole 36, grains smaller than the through hole fall through the through hole, and the grains fall into the receiving tray 54 and the pipe 5.
6 and are collected in a lees receiving box 58. That is, grains smaller than the through holes (immature grains, etc.) are removed. On the other hand, grains larger than the through hole are held in the through hole 36 without falling and are carried by the belt 26,
Only these grains are supplied one by one between the electrode rolls 20 of the measuring section 18 as grains for measurement.

In step 118, control circuit 80 determines whether the transported grains have been fed between electrode rolls 20. A voltage is applied between the electrode rolls 20 by an electric resistance value measuring device 22, and the determination is made based on the change in the electric resistance value between the electrode rolls 20.

When the grains are supplied between the electrode rolls 20 in the measurement part 18, they are crushed as the electrode rolls 20 rotate.

In step 120, the electrical resistance value measuring device 22 measures the electrical resistance value of the current flowing between the electrode rolls 20 through the grain. In step 122, similarly to step 114, the ROM 78Ai of the memory card 78 is stored in accordance with the type of grain to be measured.
A conversion program corresponding to the grain to be measured is selected from among the plurality of stored conversion programs. and,
Execute the selected program and convert the electrical resistance value of grain to moisture content.

In step 124, the control circuit 80 controls the grain number setting switch 6.
It is determined whether the measurement of the number of grains set in step 3 has been completed. If the measurement of the set number of grains has not been completed, the process returns to step 118, and steps 118 to 124 are looped. When the measurement of the set number of grains is completed, in step 126, the control circuit 80 stops driving the motor 26 via the drive control device 35, and the driving of the belt 26 is stopped. In step 128, the control circuit 80 calculates an average value of the measured moisture content using a simple average, a weighted average, a moving average, or the like. The standard deviation of the moisture content is also calculated, and step 1
Execute 30.

On the other hand, if the measurement mode is the multi-grain mode in step 110, the process moves to step 112, and the electrical resistance measuring device 22 measures the electrical resistance value of the current flowing between the electrode rolls 20 through the grains. In step 113, the RO of the memory card 78 is
A conversion program corresponding to the type of grain to be measured is selected from a plurality of conversion programs stored in the M78A. If the type of grain to be measured at this time is brown rice, white rice, paddy, wheat, or barley, select the program corresponding to the grain type of the selected conversion program, and if the grain type is other than the grain type mentioned above, perform preliminary conversion. Select a program. Then, the selected program is executed and the electrical resistance value of the grain is converted into moisture content. In step 114, it is determined whether the number of measurements is 10 times or not, and if the number of measurements is less than 10 times, the process returns to step 112. When the 10 measurements and conversions are completed, in step 115 the control circuit 80 calculates an average value of the moisture content measured 10 times by a simple average, a weighted average, a moving average, etc., and proceeds to step 130.

At step 130, the control circuit 80 displays the measurement results on the display 61. At step 132, control circuit 80 determines whether printer control switch 72 is turned on. If the printer control switch 72 is turned on, the control circuit 80 executes the printer control program stored in the memory card 78 in step 134 to control the printer 15.
to drive. The printer 15 prints the measurement results on the printer paper 14 using the display method specified by the user using the printer control switch 72. This outputs the measurement results. FIG. 7 shows a heading 84A when ten grains of white rice are measured in the single-grain mode in this embodiment, and an average value display 84B prepared as a method of displaying the measurement results.
1 shows output examples of a data display 84C and a histogram display 84D. At step 136, the rotation of the electrode roll 20 is stopped and the measurement of the water content is completed.

In this way, a memory card 78 is prepared for each grain production area, and a memory card 78 is selected according to the grain to be measured.
By selecting the grain selection switch 64 according to the type of grain to be measured, the moisture content of the grain to be measured can be accurately measured according to the type of grain and production area. In addition, the loading section 7
The conversion program to be executed can be easily changed by replacing the memory card 78 loaded in the memory card 78.

Further, by providing a spare switch 68 in the grain selection switch 64 and storing conversion programs for a plurality of types of grains corresponding to the spare switch 68 in the memory card 78, it is possible to eliminate the need for the number of switches for selecting grain types. This makes it possible to suppress the increase in costs and reduce costs, and to make the standby switch 68 compatible with the type of grain that meets the user's requirements. Furthermore, in this embodiment, the feeding speed at which the grains are fed between the electrode rolls 20 and crushed can also be changed depending on the type of grains and the like.

In addition, in this embodiment, the conversion program that performs the conversion process is 7.
8, the conversion data is stored in the memory card 78, a storage unit is also installed in the moisture content measuring device body, and a basic program is created that performs conversion based on the conversion data and the measured electrical resistance value. The conversion data may be exchanged by storing the data and exchanging the memory card 78 according to the grain to be measured.

Furthermore, in this example, a memory card was used as a removable storage means, but any storage means such as a floppy disk, an optical disk, or an IC card equipped with a storage section and a CPU may be used. It is sufficient if it can be attached and detached freely.

Furthermore, in this embodiment, the memory card 78 is used only for reading out the brochure and data, but the memory card 78
8, the measurement results measured by the grain moisture content measuring device 10 may also be written.

Furthermore, in this embodiment, the plurality of memory cards 78 are associated with each grain production region, but they may be associated with each variety, crop, etc.

Furthermore, the grain moisture content measuring device 10 may be provided with a function of displaying the contents of the memory card 78 on the display 61.

Further, in this embodiment, a plurality of memory cards 78 are associated with each grain production region, but a large number of grain production regions are classified into a plurality of groups, and a memory card 78 is assigned to each group.
8 may be made to correspond to each other so that a plurality of conversion programs stored in one memory card 78 can be selected by operating the grain moisture content measuring device 10.

〔Effect of the invention〕

As explained above, according to the present invention, the measured electrical resistance value is converted into the water content based on the conversion data or conversion program stored in the storage means for converting the electrical resistance value into the water content. Therefore, even when measuring the moisture content of different types of grains or grains from different production areas, a single grain moisture content measurement device can accurately measure the moisture content depending on the type of grain or production area. It has the excellent effect of being able to measure and reduce production costs.

[Brief explanation of drawings]

FIG. 1 is an external view of the grain moisture content measuring device according to this embodiment;
Fig. 2 is a perspective view of the vicinity of the rotating electrode, Fig. 3 is a schematic sectional view of the grain feeding device, Fig. 4 is an external view of the operation panel, and Fig. 5 (
1) is a perspective view of the vicinity of the loading section, Figure 5 (2) is a diagram showing the converted program storage area of the memory card, Figure 6 is a schematic block diagram of the area around the control circuit, and Figure 7 shows the operation of the control circuit. The flowchart, FIG. 8, is an example of the output of the measurement results of the grain moisture content measuring device. IO... Grain moisture content measuring device, 20... Electrode roll, 22... Electrical resistance value measuring device, - Selection switch, - Preliminary switch, - Loading section, - Memory card, - Control circuit.

Claims (2)

[Claims] (1) a resistance value measuring means for measuring the electrical resistance value of grain;
Conversion data stored in a storage means selected from a plurality of storage means each storing different conversion data or conversion programs for converting an electrical resistance value into a moisture content, and which is detachable from the main body of the grain moisture content measuring device. Alternatively, a grain moisture content measuring device comprising: a conversion means for converting a measured electrical resistance value into a moisture content based on a conversion program. (2) Different conversion data or conversion programs for converting the electric resistance value to moisture content are determined depending on different production areas or types of grains that are not preset in the grain moisture content measuring device. The grain moisture content measuring device according to item (1).