JPS63210762A - Moisture data processor for grain drier - Google Patents

Abstract

PURPOSE:To make the accuracy of a calculated mean water value and to improve the accuracy of drying control by providing a moisture meter, a deciding means by upper-limit value, a mean moisture calculating means by upper limit value, a moisture value display means, and a selected moisture value output means. CONSTITUTION:The moisture meter measures the moisture of grains, one by one. The deciding means A by upper-limit value decides whether or not the dame measurement data obtained by the moisture meter 20 exceeds each of (n) upper-limit values. When it is decided that the measurement data is smaller than the respective upper-limit values, the mean moisture calculating means B fetches the measurement data by upper-limit value and collects respective mean water values by the (n) upper-limit values from the inputted measurement data. The moisture value display means C displays the respective means moisture values obtained by the means B. Then the selected moisture value output means D selects one of the (n) upper-limit values and controls the means B so as to output the mean moisture value corresponding to the selected upper- limit value.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a grain dryer that dries grain such as paddy while circulating inside the machine, and particularly relates to an improvement of its moisture data processing device.

(Prior art) In a grain dryer equipped with a moisture meter that measures the moisture content of each grain of grain, the measurement data of the moisture meter is compared with a predetermined upper limit, and each measurement data below the upper limit is averaged. to calculate the average moisture value. When the calculated average moisture value reaches a preset target moisture value (stop moisture value), the dryer automatically stops.

(Problems to be Solved by the Invention) Incidentally, the amount of immature rice mixed into grains to be dried generally differs depending on the region of production. On the other hand, the upper limit value for comparison with the above-mentioned moisture value measurement data has conventionally been fixed. Therefore, when there is a large amount of immature rice, the accuracy of the calculated average moisture value is low, and the accuracy of drying control is low due to overdrying or underdrying.

Therefore, an object of the present invention is to improve the accuracy of the calculated average moisture value, thereby improving the accuracy of drying control.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a moisture meter 20 that measures the moisture content of grains one by one, and the same measurement data measured by the moisture meter 20 in advance. prescribed n
an upper limit value-specific determination means A that determines whether or not the measured data is below each upper limit value for each upper limit value; Upper limit value-based average moisture calculation means B that separately captures and calculates each average moisture value for each of the n upper limit values from the captured measurement data, and each average calculated by the upper limit value-specific average moisture calculation means B. Moisture value display means C for displaying a moisture value; and average moisture calculation means for each upper limit value so that one of the n upper limit values can be selected and an average moisture value according to the selected upper limit value is output. and a selected moisture value output means for controlling B.

(Function) To explain the present invention with reference to FIG. 1, the upper limit value determination means A determines the upper limit value for each upper limit value of n Determine whether or not the value is below.

When the upper limit value-specific determination means A determines that the measured data is below each upper limit value, the upper limit value-specific average moisture calculation means B takes in the measurement data for each upper limit value, and calculates each of the measured data from the imported measurement data. Find each average moisture value for each upper limit value.

Each average moisture value is displayed on moisture value display means C.

Prior to this display, a highly accurate moisture value is measured using a manual moisture meter, and the operator compares this moisture value with each average moisture value while looking at the display.

Then, select the average moisture value closest to that moisture value, and select the upper limit value for obtaining this average moisture value using the selected moisture value output means so that the selected average moisture value is output. put.

In this way, the average moisture value outputted from the one-selection moisture value output means at the next moisture measurement will be extremely accurate.

Therefore, if the present invention is applied to drying control of a dryer as in the embodiment, highly accurate drying control can be realized.

(Example) The present invention will be described in detail below with reference to one drawing.

FIG. 2 is a schematic cross-sectional view of a grain dryer embodying the present invention. In FIG. Install it at an angle so that the grain chamber 3 is installed by each grain board 2.
form.

Two mesh plates 4 are connected in parallel to each lower side of the floating grain plate 2,
A drying chamber 5 is formed between them. A hot air chamber 6 in which a burner 10 as a drying heat source is installed is formed between two inner mesh plates 4 provided near the center of the storage chamber l, and a hot air chamber 6 is formed between two outer mesh plates 4, 4 on the left and right sides. A ventilation chamber 8 is formed between the machine wall 7 and the
It is connected to the suction fan 9 of the ventilation chamber 8.

Reference numeral 11 denotes a grain collection room formed in the shape of a gutter, and a lower helix 12 is installed at the bottom of the grain collection room, the end of which is connected to the lower entrance of the elevator 13. Reference numeral 14 denotes a rotary valve pivotally supported at the lower end outlet of the drying chamber 5, and its rotation causes the grains in the storage chamber 1 to flow out through the drying chamber 5 into the grain collection chamber 11.

The upper outlet of the lift 4!313 is connected to an upper helix 15 installed on the ceiling of the storage chamber 1, and the outlet of this upper helix 15 looks into the storage chamber l.

A moisture meter 20 measures the moisture content (moisture) per grain of grain during drying, and is installed, for example, in the grain chamber 3. 2
Reference numeral 1 denotes an outside air temperature sensor attached to the machine wall 7 to measure the outside air temperature, and 22 an outside air humidity sensor attached to the ja wall 7 to measure the outside air humidity.

23 grain temperature sensor that measures the temperature of grain in grain chamber 3;
24 is an exhaust temperature sensor installed in the exhaust air chamber 8, and 25 is a hot air temperature sensor installed in the hot air chamber 6. Further, 26 is a fuel pump that supplies fuel to the burner 10, and 27 is a fuel valve that adjusts the fuel that is supplied to the burner IO.

FIG. 3 is a block diagram showing an example of a control system according to an embodiment of the present invention.

In the figure, 30 is a microprocessor type CPU (
The central processing unit (central processing unit) performs various judgments as shown in FIG. 6, for example, and controls each component as described later.

31 is an operation input setting device in which, for example, a drying button, a tensioning button, a discharge button, a stop button, a finishing moisture setting switch for setting the moisture when stopping drying, etc. are arranged;
It is connected to the CPU 30 via an input circuit 32. In addition, the moisture meter 20 and each sensor 21 to 25 are connected to the A/D converter 33.
It is connected to the CPU 30 via.

A display section 34 is connected to the CPU 30 via an output circuit 35, and this display section 34 performs various displays.

36 is a memory consisting of a read-only φ memory (ROM) that stores control procedures for the CPU 30 to control each component, and a random medium access memory (RAM) that temporarily stores various data such as measurement data. It is a device.

37 to 39 are output circuits connected to the CPU 30, respectively, and the output circuit 37 includes a transport motor 40, a heater 41 .
A moisture meter motor 42 is connected to each, a fan motor 43 is connected to the output circuit 38, and a fuel pump 26 and a fuel valve 27 are connected to the output circuit 39.

The operation input setting device 31 is provided with an upper limit selection switch 31A for selecting one of n upper limit values, such as five, for determining n average moisture values, as described later. This upper limit value selection switch 31A is provided with a scale from "I" to rVJ as shown in FIG.
When the dial is set to one of -rVJ, as shown in FIG. 5, drying control is performed as described below based on the average moisture value obtained by processing with the corresponding upper limit value.

Next, an example of the operation of the embodiment of the present invention configured as described above will be explained with reference to the flowchart of FIG.

Now, when the storage chamber 1 is loaded with grains and the drying switch is turned on (step SL), the motors of each part are driven and the 8-slO is ignited by the ignition heater 41 (
Step 52) 8th order.

A predetermined hot air temperature control is performed (step S3), and the moisture meter 2
0 measures the moisture content of each grain and displays the measurement contents on the display unit 35 (step S4).

When the moisture meter 20 finishes measuring, for example, 5 times in units of 32 grains (step S5), it calculates the average moisture value from the data measured five times, displays the moisture value on the display section 34, and displays the moisture content. Hot air temperature control is performed based on the value (step Sa, S7).

Next, the setting positions of "I" to rVJ on the scale of the upper limit selection switch 31A shown in FIG. 4 are read (step S8),
Further, a table is read in which each upper limit value r3.5VJ to r1.5■ is associated with each of the scales ``Work'' to rVJ (step S9).

Next, the moisture content of each grain is measured using the moisture meter 20 (step S10), and the same measurement data is
For each of the five upper limit values read from the table, each determination process is performed to determine whether or not the value is below each upper limit value, and the determination process is also performed to determine whether or not the measured data exceeds a predetermined lower limit value (step 5ll).

When the same measurement data falls below each upper limit value and exceeds the lower limit value and falls within each predetermined range determined by each upper limit value, the same measurement data is stored separately for each upper limit value. From the measurement data stored in this way, the average moisture value MS for each upper limit value is determined by a predetermined calculation,
To find this, use the upper limit selection switch 31A among the average moisture values.
The one selected is displayed on the display unit 34 (step 512).

Next, the set moisture value ML set by the finish moisture setting switch is read (step 513), and if the upper limit selection switch 31A is set to the scale "■" as shown in FIG. The upper limit value 2.5 corresponding to the scale "m" among the average moisture values obtained for each upper limit value in step 512
The average moisture value MS determined by V is the set moisture value M
Compared to L.

When the average moisture value MS reaches the set moisture value ML (step 514), the burner is stopped (step 5
15) After the timer has elapsed for 5 minutes, the motors of each part are stopped (step S16.517).

At this time, 5 for each upper limit value obtained in step S12.
The average moisture value of each is stored in the storage device 36. Next, move the dial of the upper limit value selection switch 31A to the scale “work” to r.
When the VJ is sequentially placed on the VJ, the average moisture value determined for each upper limit value corresponding to the scale is sequentially displayed on the display fiB34. (Steps 518.519).

Prior to this display, the moisture content of the grains shall be measured in advance using a highly accurate manual moisture meter prepared separately immediately after the drying of the grains is completed. This allows the operator to compare the highly accurate measured value and each of the above average moisture values while looking at the display, and select the average moisture value closest to the measured value. Therefore, if the dial of the upper limit selection switch 31A is set to the scale corresponding to the selected moisture value, drying control from the first time onwards will be performed based on the average moisture value determined by the upper limit value corresponding to the scale.

As described above, in this embodiment, at the start of operation in each year, the moisture value selection switch 31A is set to, for example, the scale r II J
If you use it 2 to 3 times according to the standard scale, and then use it according to the scale selected according to the procedure described above, you can improve the accuracy of drying control, especially when there is a lot of immature rice. can be improved.

In this embodiment, the upper limit value selection switch 31A is provided as an independent switch, but if this switch is also used as a conventional hot air temperature changeover switch, the correction value of the hot air temperature and the upper limit value of the moisture measurement data can be changed. It has the advantage of being able to configure settings all at once.

(Effects of the Invention) As described above, in the present invention, n upper limit values are provided, and each average moisture value is determined and displayed for each upper limit value, and
I made it possible to select one of them and output it, so
The selected and output moisture value is highly accurate, thereby making it possible to significantly improve the accuracy of drying control.

[Brief explanation of the drawing]

Figure 1 is a functional diagram of the present invention, Figure 2 is a schematic configuration diagram of a dryer implementing the present invention, Figure 3 is a block diagram of an embodiment of the present invention, and Figure 4 is an example of an upper limit selection switch. 5 is a front view, FIG. 5 is a table of each upper limit value, and FIG. 6 is a flowchart showing an example of the operation of the embodiment of the present invention. 20 is a moisture meter, 31A is an upper limit value selection switch, A is a determination means for each upper limit value, B is an average moisture calculation means for each upper limit value, C is a moisture value display means, and D is a selected moisture value output means. Patent applicant: Iseki Agricultural Machinery Co., Ltd. Figure 4 C ■ Figure 2 Figure 6

Claims (1)

[Scope of Claims] A moisture meter that measures the moisture content of grains one by one, and a method for determining whether or not the same measurement data measured by the moisture meter is below each of n predetermined upper limit values. a determination means for each upper limit value, which determines whether the measured data is below each upper limit value; an upper limit value-based average moisture calculation means for calculating each average moisture value for each upper limit value; a moisture value display means for displaying each average moisture value calculated by the upper limit value-based average moisture calculation means; a moisture data processing device for a grain dryer, comprising a selected moisture value output means for controlling the average moisture calculation means for each upper limit value so as to select one of them and output an average moisture value according to the selected upper limit value. .