JP2900357B2 - Apparatus and method for controlling concentration of nori mixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentration control apparatus and a method for controlling the concentration of a laver preparation liquid during the production of paper leaf laver, and more particularly to a method of controlling the concentration of a laver progeny which is sequentially carried in. The present invention relates to an apparatus for controlling the concentration of a seaweed mixture and a method for controlling the concentration of the seaweed preparation.

[0002]

2. Description of the Related Art Conventionally, this type of apparatus has been disclosed in
There is one disclosed in Japanese Patent No. 227766. This conventional device is shown in FIGS. FIG. 12 is an overall block diagram of the conventional device, and FIG. 13 is a front view of a control panel in the conventional device. In the figure, the conventional device detects the concentration of the laver preparation liquid 800 stored in the concentration adjusting tank 81 of the concentration adjusting unit 8, and detects the detected concentration and the concentration setting unit 1.
Based on the set concentration set in step 1, the concentration control unit 40 adjusts and controls the concentration of the seaweed preparation liquid 800 stored in the concentration adjustment tank 81, and the current value display 68 digitally displays the detected concentration. At the same time, the set density is displayed on the set value display 69.
Is a digital display in which the number of digits and each digit position of the present value display 68 are aligned.

[0003] The concentration adjusting tank 81 is provided with a seaweed preparation liquid 800 having a concentration close to an appropriate concentration from a preparation machine 80 and a water supply pump 8.
3 is provided so as to flow in and store water from a water tank 82. The concentration adjusting tank 81 has a drainage pump 8 having a filter screen 87 attached to an outlet.
When the concentration is low, the water is filtered and discharged from the concentration adjusting tank 81. Further, in the concentration adjusting tank 81, a seaweed preparation liquid 800, which is a mixture of seaweed and water stored in the tank, is provided.
And a float switch 86 that operates when the water level in the tank reaches a set upper limit water level and a lower limit water level to transmit an electric signal. .

The current value display 68 and the set value display 6
Reference numeral 9 denotes a panel meter for digitally displaying the concentration of the current value and the set value of the seaweed preparation liquid 800 with a number of about three digits, respectively. On the surface of the control panel 95, a density adjusting dial 110 and light / dark display lamps L1, L2, L3, L4, L5,
Input switch 830 for feed pump 83, drain pump 8
4 is provided with an input switch 840, an alarm buzzer 79, a switch 790 for the alarm buzzer 79, a manual / automatic changeover switch 820, and a power switch 810.

The density detecting section 21 includes a light emitting section 21a having a light emitting element such as a light emitting diode, and a light receiving section having a light receiving element such as a phototransistor or a photodiode which changes its electric output according to the amount of received light. And a portion 21b as a sensor. The light signal emitted by the light emitting unit 21a passes through the mixture and reaches the light receiving unit 21b, and the light receiving unit 21b generates an output signal that changes depending on the amount of transmitted light. This output signal is amplified by the amplifier 21d, compared with the reference signal of the set concentration output from the set value generator 111 by the differential amplifier 33, and after its deviation value is amplified, the voltage discriminator 3
4 is supplied. The voltage discriminator 34 discriminates the voltage signal into, for example, five-stage voltage signals according to the magnitude of the voltage.

The discriminated five-stage voltage signals are supplied to a gray scale display unit 77, respectively, and one of the gray scale display lamps L1, L2, L3, L4, L5 is selected according to the magnitude of the voltage. Is turned on, and the concentration of the seaweed preparation liquid 800 detected by the concentration detection unit 21 is compared with a set concentration value and displayed. The light / dark display lamp L1 has a maximum high density "dark", the lamp L2 has a medium high density "dark", the light / dark display lamp L3 has an appropriate density "good", and the light / dark display lamp L4 has a medium density. Is set to display the low density “light”, and the gradation display lamp L5 displays the maximum low density “light”.

Next, the operation of controlling the concentration of the seaweed preparation liquid in the conventional apparatus based on the above configuration will be described. First, the dried seaweed algae is cut into small pieces by a mincing machine (not shown) and minced. .
Water is also supplied to the blender 80 at the same time as the minced nori original algae, and a nori blended liquid 800 is obtained which is substantially equal to a paper leaf nori having a desired thickness.

[0008] The seaweed preparation liquid 800 is supplied from the preparation machine 80 into the concentration adjusting tank 81. When the water level of the laver preparation liquid 800 stored in the concentration adjusting tank 81 reaches the set upper limit water level, the float switch 86 is operated and the limit signal is fed back to the preparation machine 80 side, and the supply from the preparation machine 80 is performed. Stops. The seaweed preparation liquid 800 stored in the concentration adjustment tank 81 is stirred by the stirrer 85 to prevent the separation of the seaweed and the water, and the concentration of the seaweed preparation liquid 800 is adjusted by the concentration detection unit 21 installed in the concentration adjustment tank 81. Is detected.

In the concentration setting unit 11, a nori mixture 800
Is set. The set density value is digitally displayed on the set value display 69 and the detected density is displayed on the current value display 68 respectively. Since the present value display 68 and the set value display 69 display the number of digits and the position of each digit in alignment, the operator can easily judge each state.

The detected density value and the set density value are input to the differential amplifier 33, and the deviation density value is calculated and output to the voltage discriminator 34. This voltage discriminator 34 discriminates and outputs all the stages according to the signal voltage value of the deviation concentration value. The timer circuit 4 is operated by each of the discriminated signals.
4 and 46 are started to drive the drive circuits 45 and 47 for the time set by the timer circuits 44 and 46. The drive circuit 45 drives the drain pump 84 to discharge water to increase the concentration, and the drive circuit 47 drives the water supply pump 83 to supply water to lower the concentration. In this way, the nori preparation liquid 800 adjusted to an appropriate concentration is supplied from the concentration adjustment tank 81 to a nori paper making machine (not shown) to form nori, and the remaining nori preparation liquid 80
0 is returned to the concentration adjusting tank 81.

When the water level of the concentration adjusting tank 81 drops to the set lower limit water level, the float switch 86 is operated and a signal is sent to the compounding machine 80, so that the valve device of the compounding machine 80 is operated and the water level is set. The laver preparation liquid 800 is supplied to the concentration adjusting tank 81 until the upper limit water level is reached. As described above, even when the concentration of the laver preparation liquid 800 in the concentration adjusting tank 81 is out of the range of the appropriate concentration, it is possible to automatically adjust the concentration to the appropriate concentration. Appropriate and uniform thickness of leaf laver is achieved.

[0012]

Since the conventional laver preparation liquid concentration control device is constructed as described above, it is assumed that feedback control is performed so that the set concentration and the detection concentration of the laver preparation liquid are made to coincide with each other. Depending on the characteristics, quality, varieties, conditions, etc. of the nori-producing algae, the finished product of the paper leaf nori, which is the final product, for example, the weight per predetermined number of paper leaf nori varies, and paper satisfying the target conditions There was a problem that the concentration of the seaweed preparation liquid for producing leaf seaweed could not be accurately adjusted.

[0013] That is, the conventional seaweed preparation liquid concentration control device comprises:
Since the hardness of the seaweed raw material differs depending on the collection time, the sampling area, the brand, etc., the concentration detecting unit 21 detects the change in the amount of light transmitted by the seaweed preparation liquid, and the detected value is changed to the detected value. In addition to the concentration, the color of the seaweed as the raw material is also included and detected. Therefore,
If the color of the raw laver becomes lighter, the amount of light transmitted by the concentration detector 21 increases even if the concentration of the laver preparation liquid 800 is constant. The corresponding output signal is output. Density control unit 40
In order to operate the drain pump 84 by this output to discharge the amount of water corresponding to the apparent concentration change,
There was a drawback that the concentration of the laver preparation liquid 800 was increased, and as a result, the paper laver as a product became thicker.

Further, when the color of the laver as a raw material becomes darker, the amount of light transmitted through the concentration detector 21 decreases even if the concentration of the laver mixture 800 is constant. It is judged that the concentration is high, and the paper leaf nori as a product becomes thin. As described above, the conventional laver preparation liquid concentration control device detects the change in the amount of transmitted light of the laver and water preparation liquid as the concentration detection unit 21. However, there was a drawback that the thickness of the paper leaf nori became a section.

Estimating the quality of paper leaf laver from the set concentration or the detected concentration of the laver preparation liquid in accordance with various conditions of the nori progenitor requires long-term intuition and skill in the concentration adjustment work. However, even with this long intuition and skill, there is a problem that the concentration may be erroneously adjusted depending on various conditions or types of the laver raw material.

In addition, in the concentration adjustment of the laver preparation liquid, since each state or type of the laver progenitor is different every time the laver progeny algae are carried in, the laver preparation liquid corresponding to each type of laver progeny algae is different. Since the state must be immediately judged and adjusted by the operator, there is a problem that the density adjustment is extremely difficult and complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. By adjusting the concentration of the nori preparation liquid in consideration of the degree of the nori color to the detected concentration which is a reference for feedback control, the final product paper An object of the present invention is to provide a concentration control apparatus and a method for a nori preparation liquid that can adjust leaf nori to target quality.

[0018]

FIG. 1 is a diagram for explaining the principle of the apparatus according to the present invention. In the figure, a laver preparation liquid concentration control device according to the present invention is a laver preparation liquid concentration control device for controlling the concentration of a laver preparation liquid obtained by mixing a laver raw material and water. Concentration setting means for setting a concentration; concentration detection means for optically detecting the current concentration of the mixed nori preparation liquid and outputting the detected concentration as a detected concentration; nori to be controlled or a result of control Nori color detecting means for detecting the color of nori and outputting it as a detected nori color, and concentration control means for adjusting and controlling the concentration of the nori preparation liquid based on the set concentration, the detected concentration and the detected nori color. is there.

In the concentration control device for the nori mixture according to the present invention, if necessary, the concentration control means corrects the nori color component contained in the detected concentration with the detected nori color, and the corrected detection means The apparatus includes a deviation concentration calculation unit that calculates a deviation concentration by comparing the concentration with a set concentration, and a concentration adjustment unit that adjusts the concentration of the nori preparation liquid based on the deviation concentration.

Further, in the concentration control device for the seaweed preparation liquid according to the present invention, if necessary, the concentration control means includes a deviation concentration calculating section for calculating the deviation concentration by comparing the detected concentration with the set concentration, and includes the deviation concentration. And a concentration adjusting means for adjusting the concentration of the nori preparation liquid based on the corrected deviation density.

FIG. 2 is a diagram illustrating the principle of another apparatus according to the present invention. In the same figure, a laver preparation liquid concentration control apparatus according to the present invention is a laver preparation liquid concentration control apparatus for controlling the concentration of a laver preparation liquid obtained by mixing a laver raw material and water, and a laver preparation liquid serving as a control target value. Concentration setting means for setting the set concentration, concentration detection means for optically detecting the current concentration of the mixed seaweed preparation and outputting it as a detection concentration, and setting the degree of shading of the color of seaweed. Nori color input means for inputting, and concentration control means for adjusting and controlling the concentration of the nori preparation liquid based on the set concentration, the detected concentration, and the degree of the input nori color.

In another aspect of the present invention, the concentration control means corrects the nori color component contained in the detected density according to the degree of the input nori color. A deviation concentration calculating section for calculating a deviation concentration by comparing the corrected detected concentration with the set concentration; and a concentration adjusting means for adjusting the concentration of the laver preparation liquid based on the deviation concentration.

In another aspect of the present invention, there is provided a concentration control device for calculating a deviation concentration by comparing a detected concentration with a set concentration, and a laver color included in the deviation concentration. It is provided with a correction calculating means for correcting the components based on the degree of the input nori color, and a density adjusting means for adjusting the density of the nori preparation liquid based on the corrected deviation density.

Further, in the present invention or another laver concentration control apparatus according to the present invention, the laver preparation liquid is prepared by mixing the laver mixture approximately in the vicinity of a preset concentration. FIG. 3A is a diagram illustrating the principle of the method of the present invention. Figure (A)
In the laver preparation liquid concentration control method according to the present invention, the laver preparation liquid concentration control method for controlling the concentration of the laver preparation liquid obtained by mixing the laver raw material and water, wherein the laver color of the laver raw material is detected as the laver color. Detected, optically detects the concentration of the nori preparation liquid obtained by mixing the detected nori raw material and water as a detection concentration, and corrects the detection concentration with the detected nori color,
The concentration of the seaweed preparation liquid is adjusted and controlled to a preset concentration based on the corrected detected concentration.

FIG. 3B is a diagram for explaining the principle of another embodiment of the present invention. In FIG. (B), a method for controlling the concentration of a laver mixture according to the present invention is a method for controlling the concentration of a laver mixture obtained by mixing a laver material and water, wherein the concentration of the laver mixture is optically controlled. Detected as a detection concentration, to form a seaweed preparation liquid concentration-controlled based on the detection concentration,
Detecting the color of the laver paper-shaped by the papermaking as a detected laver color, correcting the detected concentration with the detected laver color, and mixing the laver to a preset concentration based on the corrected detected concentration This is for adjusting and controlling the concentration of the liquid.

Further, in the method for controlling the concentration of the seaweed mixture according to the present invention, the concentration of the seaweed mixture is adjusted to be close to a preset concentration before the adjustment control of the concentration of the seaweed mixture as required. Things.

[0027]

In the apparatus of the present invention, the concentration detecting means optically detects the concentration of the laver preparation liquid obtained by mixing the laver raw material and water, and the laver color detecting means detects the color of the laver relating to the laver preparation liquid. Since the concentration control means adjusts and controls the concentration of the laver preparation liquid based on the detected concentration detected, the detected laver color, and the set concentration set by the concentration setting means, the concentration of the laver preparation liquid to be adjusted is adjusted. Regardless of the differences in the characteristics, quality, varieties, conditions, etc. of the nori original algae, precise adjustment control can be achieved at the set concentration suitable for the characteristics of the target various nori raw materials, and the paper leaf nori as the final product will be Can be adapted to target quality.

Further, in the apparatus of the present invention, the correction calculation means corrects the nori color component contained in the detected density with the detected nori color, and the deviation density calculation section calculates the deviation density from the corrected detected density and the set density. Then, since the concentration adjusting means adjusts the concentration of the laver preparation liquid based on the deviation concentration, the detection concentration itself, which is the reference of the feedback control, can be corrected in the previous stage of the control system, and the concentration of the laver preparation liquid can be corrected. It can be controlled appropriately.

Further, in the apparatus of the present invention, the nori color component included in the deviation density calculated by the deviation density calculation section is corrected by the correction calculation means with the detected nori color, and the density adjusting means is corrected based on the corrected deviation density. Adjusts the concentration of the laver mixture, so that the correction can be made at a later stage of the feedback control, and the concentration of the laver mixture can be appropriately controlled.

In another apparatus of the present invention, the concentration detecting means optically detects the concentration of the laver preparation liquid obtained by mixing the laver raw material and water, and sets the degree of the laver color relating to the laver preparation liquid by the laver color inputting means. And enter the detected detection concentration,
The concentration control means adjusts and controls the concentration of the laver preparation liquid based on the input degree of the laver color and the set concentration set by the concentration setting means. Regardless of the differences in the characteristics, quality, varieties, conditions, etc. of the original algae, precise adjustment and control to the set concentration suitable for the target characteristics of the various seaweed raw materials are possible with a simple configuration, and the paper leaf nori as the final product Can be adapted to the target quality.

Further, in another apparatus of the present invention, the nori color component included in the detected density is corrected by the correction calculating means according to the degree of the nori color inputted, and a deviation density calculation is performed from the corrected detected density and the set density. The unit calculates the deviation concentration, and the concentration adjusting means adjusts the concentration of the seaweed preparation liquid based on the deviation concentration, so that the detection concentration itself, which is the reference of the feedback control, can be corrected in the previous stage of the control system, The concentration of the seaweed preparation can be appropriately controlled.

In another apparatus according to the present invention, the nori color component included in the deviation density calculated by the deviation density calculation unit is corrected by the degree of the nori color input by the correction calculation means, and the corrected deviation density is corrected. The concentration adjusting means adjusts the concentration of the nori preparation liquid based on the above, so that the correction can be made at a later stage of the feedback control, and the concentration of the nori preparation liquid can be appropriately controlled.

Further, in the apparatus of the present invention or another apparatus of the present invention, the concentration of the seaweed preparation is adjusted with higher precision because the seaweed preparation is adjusted to be substantially mixed near a preset concentration. And speeding up. Further, in the method of the present invention, the color of the laver of the laver material is optically detected as laver color, and the concentration of the laver mixture obtained by mixing the detected laver material and water is optically detected as the detected concentration. Then, the detection concentration is corrected by the detection seaweed color,
Since the concentration of the laver preparation liquid is adjusted and controlled to a preset concentration based on the corrected detection concentration, the concentration of the laver preparation liquid to be adjusted is adjusted to the characteristics, quality, variety, It is possible to control to the target set concentration irrespective of the difference of the type such as the state, and it is possible to adapt the paper leaf nori as the final product to the target quality.

Further, in the method of the present invention, the concentration of the nori preparation liquid is optically detected as a detection concentration, and a nori preparation liquid whose concentration is controlled based on the detected concentration is made into a paper sheet. Detects the color of the laver as a detected laver color, corrects the detected concentration with the detected laver color, and controls the concentration of the laver mixture to a preset concentration based on the corrected detected concentration. As a result, the concentration of the nori preparation liquid to be adjusted can be controlled to the target set concentration irrespective of the difference in the characteristics, quality, varieties, conditions, etc. of the nori original algae, and the final product paper Leaf laver can be adapted to the target quality.

Further, in the method of the present invention, the concentration of the laver preparation liquid is adjusted to a concentration near the preset concentration before the control of the adjustment of the laver preparation liquid. The density adjustment can be made more precise and faster.

[0036]

【Example】

(Embodiment of the present invention) A laver preparation liquid concentration control apparatus and a laver preparation liquid concentration control method according to the present invention will be described below with reference to FIGS. FIG. 4 is an overall block diagram of the apparatus of the present embodiment, FIG. 5 is a schematic explanatory view of the production from the preparation of laver to paper making and drying, FIG. 6 is a detailed explanatory view of a paper making section in the apparatus of the present embodiment, FIG. 2 shows an operation flowchart of the method for controlling the concentration of the seaweed mixture.

In each of the drawings, the concentration control device for the laver preparation liquid according to the present embodiment sets the concentration of the laver preparation liquid 800, which is the target value for the concentration control of the laver preparation liquid obtained by mixing the laver raw material and water. The setting unit 11, a concentration detecting unit 21 that optically detects the current concentration of the mixed laver preparation liquid 800 and outputs the same as a detected concentration, and a laver preparation liquid 800 that is adjusted and controlled by the apparatus of the present embodiment. A laver color detection unit 22 that is paper-made in the production unit 100 and outputs the color of the paper leaf laver as the detected laver color, and a correction operation that corrects the laver color component included in the detected density by the detected laver color A deviation concentration calculating unit 42 for calculating a deviation concentration by comparing the set concentration with the corrected detected concentration, and a concentration control device for adjusting and controlling the concentration of the laver preparation liquid 800 based on the deviation concentration. A part 43, which is configured to include a display section 6 for displaying the adjustment direction and the like of the density adjustment based on the deviation concentration.

The correction calculating section 41 and the deviation density calculating section 42
And the density control drive section 43 constitute the density control section 4. An optical signal generation circuit 21C that outputs a drive voltage for generating a predetermined amount of light;
A light emitting portion 21a generated by the driving voltage, for example, formed by a light emitting element such as a light emitting diode, and a light receiving element such as a phototransistor or a photodiode for receiving light from the light emitting portion 21a are formed. And a light receiving section 21b. The light emitting element of the light emitting section 21a is supplied with a modulation signal from an optical signal generation circuit (21c) so that light generated from the light emitting element 21a can be distinguished from sunlight or light from an electric lamp. In this embodiment, the concentration detecting section 21 is provided in the concentration adjusting tank 81. However, the light emitting section 21a and the light receiving section 21b may be provided in the middle of the outlet pipe 89 extending from the concentration adjusting tank 81. it can. Further, an incandescent light bulb may be used for the light emitting element, and Cds may be used for the light receiving element.

The laver color detecting section 22 is configured to detect the color of the laver 801 that is made into a paper sheet on the laver cage 103 of the paper making section 100, and detects the detected color detection signal (detected laver color). ) Has been calibrated in advance with reference colors,
The reference color is compared with the color of the seaweed 801 formed like a paper leaf, and only when the deviation is within a predetermined limited range, is output as a color detection signal (detected seaweed color). Note that the calibration of the color detection signal (detected laver color) may be performed based on brightness, hue, gloss, or the like, in addition to the reference color.

The display unit 6 displays light / dark display lamps L1, L2, L for displaying the degree of light / dark of the nori preparation liquid in a plurality of stages.
3, L4, L5 and other displays may be provided in the same manner as in the conventional apparatus of FIG. Next, the operation of the density control of this embodiment based on the above configuration will be described. First, as a pre-process of laver-sheeting work, nori original algae is carried in, and mince processing and washing are performed on the nori original algae to produce a nori raw material (step 1). The concentration setting unit 11 sets the concentration of the laver preparation liquid 800, which is considered to correspond to the paper leaf laver to be produced from the laver raw material, as a set concentration (step 2).

In such a state, the seaweed preparation liquid 800 in which the seaweed raw material and water are mixed is prepared by the preparation machine 80 (step 3). Nori preparation liquid 800 from this preparation machine 80
Is supplied and stored in the concentration adjusting tank 81 until the float switch 86 operates (step 4). The concentration detection unit 21 detects the concentration of the stored laver preparation liquid 800 while being stirred by the stirrer 85 (step 5).

The laver color detecting section 22 detects the color of the laver 801 which is made into a paper leaf in the paper making section 100, and outputs the detected laver color to the correction calculating section 41. In the present embodiment, the laver preparation liquid 800 whose concentration is controlled by the concentration controller 4 is not fed to the paper making section 100 until after a predetermined time, and the laver color detecting section 22 outputs the laver 801 which is paper-shaped. Color cannot be detected.

That is, since the seaweed color detection unit 22 is provided in the papermaking unit 100, the papermaking unit 100 is started and the seaweed cage 1
Nori No. 1 before paper leaf-like laver 801 was placed on 03
The color of No. 03 is detected, and an incorrectly detected nori color is output. However, since the laver color detection unit 22 is calibrated in advance with the reference color, the output is stopped in the case of a color change that greatly deviates from the reference color.

The detected density is calculated by the correction calculating section 41.
The correction calculator 41 outputs the detected density to the deviation density calculator 42 without correcting the detected density until the detected laver color is output from the laver color detector 22. The output detected density and the set density are used as a deviation density calculating section 4.
The deviation density is calculated by the deviation density calculator 42 (step 6).

Based on the deviation density, the density control drive unit 4
3 performs adjustment by feedback control so that the concentration of the nori preparation liquid 800 in the concentration adjusting tank 81 matches the set concentration (step 7). Here, the density controller 4 determines whether or not the detected laver color is output from the laver color detector 22 (step 8), and if it is determined that the detected laver color is not output, step 9 is performed. Go to # 13.

The concentration control drive section 43 controls the water supply pump 83 or the drainage pump 84 to supply / discharge water to / from the concentration adjustment tank 81 to control the concentration of the laver preparation liquid 8.
Adjust the density of 00. At the time of this density adjustment, FIG.
As shown in the figure, the light / dark display lamps L1, L2, L3, L4, L
Then, any one of the lamps 5 is turned on, and the density adjustment state and the adjustment direction are displayed by the same display operation as in the related art.
Further, the current density of the density adjusting tank 81 can be digitally displayed on the current value display 68 and the set density on the set value display 69 as the detected density, and can be confirmed.

When the concentration is adjusted by the concentration control unit 4 and it is determined that the concentration is proper (step 9), the laver preparation liquid 800 is sent from the concentration adjustment tank 81 to the paper making unit 100 via the outlet pipe 89. (Step 10), the paper making section 10
In step No. 0, a predetermined amount of the laver preparation liquid 800 is guided to the papermaking basin 101, and a predetermined amount of the laver preparation liquid 800 is poured from the papermaking basin 101 onto the laver cage 103, and the papermaking operation is started (step 11). Of the laver preparation liquid 800, only water permeates downward from laver cage 103, and only laver is filtered and left on laver cage 103 to form laver 801 which is almost uniformly shaped like a paper leaf on laver cage 103. I do. In addition, of the nori preparation liquid 800 poured into the paper making box 101, the remaining nori preparation liquid 800 other than a predetermined amount is returned from the recovery pipe 89a to the concentration adjusting tank 81 and recovered.

The laver 103 is placed continuously at predetermined intervals on the conveyor 102 rotating in the direction of the arrow shown in the figure.
When moving to the lower position of the paper making basin 101, the laver preparation liquid 800 will be poured. In this way, the seaweed 801 is formed on the plurality of laver cages 103 of the conveyer 102 moving sequentially.

The laver color of the laver 801 formed in a leaf shape on the laver cage 103 moved by the conveyer 102 is detected by the laver color detecting section 22 arranged at the subsequent stage in the transport direction (step 12). Since the seaweed 801 made in the form of a paper leaf is formed with a substantially uniform thickness on the seaweed cage 103, the seaweed 801 on the seaweed cage 103 which is sequentially transferred can be detected under certain uniform conditions.

The detected seaweed color is output to the correction operation unit 41 as a color detection signal of an electric signal, and the correction operation unit 41 corrects the seaweed color component included in the detected density based on the detected seaweed color ( Step 13). The corrected detected density returns to the deviation density calculating section 42 again and is compared with the set density, and the deviation density is output to the density control driving section 43 and the display section 6 (step 6). The density control drive section 43 can drive and control the water supply pump 83 or the drain pump 84 based on the deviation density of almost only the density component from which the color components have been removed, and can accurately match the set density (step). 7-14).

(Another Embodiment of the Present Invention) FIG. 8 is a flowchart showing the operation of a method for controlling the concentration of a seaweed preparation according to another embodiment. In this figure, the method of this embodiment is based on the premise that the feedback concentration control system is released at the time of startup and the system is set to the open loop mode. In this state, the seaweed raw material is generated by performing each of the mince treatment and the water washing treatment on the seaweed original algae (step 101).

A set mixing concentration for specifying the ratio of mixing the laver raw material and water by the mixing machine 80 is set by a mixing setting section (not shown) of the mixing machine 80 (step 102). Also, the nori raw material and water are mixed at a ratio corresponding to the set mixing concentration by the mixing machine 80 to generate a nori preparation liquid 800 (step 102).

The laver preparation liquid 800 thus generated is supplied and stored in the concentration adjusting tank 81 until the float switch 86 is operated (step 103). The concentration detection unit 21 detects the concentration of the stored laver preparation liquid 800 while being stirred by the stirrer 85 (step 104). The density setting unit 11 sets a set density as a reference of the feedback density control system to the same value as the detected density (step 10).
5).

With the set density set, the operator sets the feedback density control system to the closed loop mode, and starts the feedback operation of the density control. In addition, the image pickup unit 22 captures the laver 801 that has been pressed and dewatered by the dewatering unit 106 after being made into a paper sheet in the papermaking unit 100, and the laver image is output to the density control unit 4. In the present embodiment, the laver preparation liquid 800 whose concentration has been controlled by the concentration controller 4 must be after a predetermined period of time before the paper making unit 100.
The imaging unit 22 is not fed to
It is not possible to detect the color of the laver by capturing the 01 laver image. Since this is the same as the embodiment shown in FIG. 6, the details are omitted.

Further, the concentration detecting section 21 detects the concentration of the laver preparation liquid 800 stored in the concentration adjusting tank 81 by using a stirrer 85.
Is detected while stirring (step 106). The detected density and the set density are input to the deviation density calculator 41, and the deviation density calculator 41 calculates the deviation density (step 107).

The seaweed preparation 800
Is determined to be a tentative appropriate density based on the set density (step 108). If it is determined in this determination that the concentration is appropriate, the nori preparation liquid 8 is further stored in the concentration adjusting tank 81.
It is determined whether or not 00 remains (step 10).
9). When it is determined that the laver preparation liquid 800 remains, the laver preparation liquid 800 is fed to the paper making section 100 (step 110).

In the paper making section 100, the seaweed preparation liquid 800 is made (Step 111), and the seaweed made and dehydrated into a paper leaf shape is detected as a seaweed color by the seaweed color detector 22 (Step 111). Step 112). It is determined whether or not the detected laver color has been output (step 11).
3) If it is determined that no output has been made, steps 106 to 112 are repeated.

If it is determined in step 113 that the detected laver color has been output, the correction calculator 41 calculates the correction of the detected density based on the detected laver color (step 114). After obtaining the calculated detected density, the process returns to step 106 again to obtain the detected density. The deviation density calculator 42 calculates the deviation density from the corrected detected density and the set density (step 107). From this deviation density value, it is determined whether or not the density is true proper (step 108).

Here, if it is determined that the density is appropriate, the operations of steps 109 to 114 are repeated. When it is determined that the concentration is not the proper concentration, the concentration control drive unit 43 executes the concentration adjustment operation of the nori preparation liquid 800 (step 115). In this case, after once adjusting the concentration of the seaweed preparation liquid 800 (step 115).
May be configured to proceed to step 109 without proceeding to step 106, regardless of whether the density is appropriate.

If it is determined in step 109 that no seaweed preparation liquid remains in the concentration adjusting tank 81, the process ends (step 109). FIG. 9 (A),
(B), (C), and (D) show a detection mode diagram of a laver color detection unit in another embodiment device of the present invention.

In the figure, a laver color detection section 22 arranges a reference color sample 105 on a gantry 104 laid on a conveyor 102, and the color sample 105 and a laver 801 formed into a paper leaf as a sample. May be detected within one screen. Also, as shown in FIG. 9C, a reference color sample 105 is provided on the side of the conveyor 102.
May be provided. In these cases, the papermaking unit 10 is included in one screen imaged by the imaging unit 22.
Nori 80 as a sample on laver cage 103 fed from 0
1 and the color sample 105 are included, and the inconsistency is easily determined due to the color brightness difference of the front-back correlation (see FIG. 9B) or the left-right correlation (see FIG. 9D) in the screen. You can judge.

In the above embodiment, the color sample 1 is applied to the entire laver 801 on the laver cage 103 serving as a sample.
Although the configuration is compared with the nori sample 05, the configuration may be such that the laver sample 105 is compared with each region of the laver 801 shown in FIG. In this case, a thick (or thin) mottle pattern is also partially inspected in any area of the laver 801 on the laver cage 103, and based on the inspection result, a non-uniform paper leaf nori is formed by a stirring or reflux operation. Manufacturing can be prevented beforehand.

In the above embodiment, the laver color detecting section 22 for detecting the color of the laver is provided at the subsequent stage of the paper making section 100, and the color of the paper leaf-like laver sent from the paper making section 100 is provided. However, the configuration may be such that the laver color detection unit 22 is provided at the front stage of the blender 80 to detect the color of minced seaweed and washed. In this case, color correction can be performed on the detected density, which is the reference of the density feedback control, from the time of starting the apparatus, and accurate density adjustment can be performed from the beginning.

In the above embodiment, the color correction for the detected density is performed before the calculation of the deviation density. However, the deviation density is obtained from the detected density and the set density, and the color correction is performed on the deviation density. May be adopted. Further, the control drive signal output from the concentration controller 4 to the water supply pump 83 or the drainage pump 84 may be modified to correspond to the color correction.

(Another Embodiment of the Invention) An embodiment of the present invention will be described below with reference to FIGS. FIG. 10 is an overall block configuration diagram of the laver mixture concentration control device according to the present embodiment, and FIG. 11 is a correction voltage output characteristic diagram of the laver color input section in the device shown in FIG. In each of the drawings, the laver mixture concentration control device according to this embodiment is the same as that shown in FIG.
, A density setting unit 11, a density detection unit 21,
A correction calculation unit 41, a deviation density calculation unit 42, a density control drive unit 43, and a display unit 6 are provided in common. In addition to this configuration, an operator or a producer discriminates the laver color of the laver material to determine the laver color. , And a nori color input unit 12 for outputting a preset correction voltage corresponding to the gray level to the correction calculation unit 41.

The laver color input section 12 is provided with a setting dial 120 for an operator or a producer to visually determine the laver color of the laver material and to set and input the laver color level. The correction voltage output unit 121 outputs a correction voltage previously associated with a level. The setting dial 120 has five setting levels. For example, the color of the nori in the case of the first nori (first nori) harvested at the beginning of the harvest is black (level 1),
In the case of the nori collected at the end of the harvest season, the color of the nori is brown (level 5), and the range from black (level 1) to brown (level 5) is medium black (level 2) and black brown (level 3). The set level is determined so as to be classified into a medium brown and a medium brown (level 4).

Next, the operation of this embodiment based on the above configuration will be described. First, in the same manner as the concentration control operation shown in FIG. 4, the nori raw algae carried in are minced and washed to produce a nori raw material. An operator visually observes the laver color of the laver raw material, and classifies black (level 1), medium black (level 2), black brown (level 3), medium brown (level 4), and brown (level 5) which have been classified in advance. ) Is determined. The setting dial 12 is set to the classification level considered to be applicable by this judgment.
Set 0.

By setting the setting dial 120, the correction voltage output section 121 outputs a correction voltage value corresponding to the classification level based on the characteristics shown in FIG. For example, when the setting dial 120 is set to the level 1 where the laver color is black, the correction voltage E0 [mV] is output, and the correction voltages E1,..., E4 [mV] corresponding to the set levels 2,. Is output.

The output correction voltage E0 (or E1,
, E4) are input to a correction operation unit 41. The correction operation unit 41 outputs an output signal of a predetermined voltage value output from the light receiving unit 21b of the density detection unit 21 by photoelectric conversion to the correction voltage E.
The correction is made with 0 (or E1,..., E4), and the output signal after the correction is output to the deviation density calculator 42 in the subsequent stage. The processes subsequent to the deviation concentration calculating section 42 execute the operation of the concentration adjustment in the same manner as the laver preparation liquid concentration control device shown in FIG. As described above, the operator, the producer, and the like visually determine the nori color and perform the color correction, so that a device such as a nori color detection unit is not provided, and a more precise nori preparation liquid can be obtained with a simple configuration. The density can be adjusted.

In the above embodiment, the correction voltage E
Although all of 0,..., And E4 are configured to output the predetermined voltage value, the configuration may be such that the first laver is black and the concentration of the laver mixture is adjusted based on this black laver.
In this case, the correction voltage E0 is output as a value of 0 [mV], or the correction operation unit 4 outputs no correction voltage E0.
1 can also directly output the output signal from the density detector 21 to the subsequent deviation density calculator 42 without correcting it.

In the above embodiment, the density is adjusted based on the black color of the first laver.
It is also possible to use the color of any of the seaweed harvested thereafter as a reference, or to use the assumed color as a reference. Further, in each of the above embodiments, the color correction for the detected density is performed before the calculation of the deviation density. However, the deviation density is obtained from the detected density and the set density. It is also possible to adopt a configuration in which the correction calculation unit 41 performs color correction based on the correction voltage from.

In the above embodiment, the setting dial 120 of the laver color input section 12 is selected in five stages to output the corresponding five types of correction voltage values E0,..., E4. 120 may be changed steplessly, and a correction voltage value that changes corresponding to the change may be output.

In each of the above-described embodiments, the producer discriminates the color of the laver material. However, the laver color is detected by an independent laver color detector 13 which is separate from the present apparatus, and the output is compared with the laver of the present apparatus. It is also possible to input in comparison with the color level. The laver color detector 13 spectrally measures the color of the laver raw material using a color sensor composed of RGB color elements, compares the spectral measurement result with data of each color from black to brown stored in advance, and determines a match. It is also possible to make a determination and detect the laver color based on this determination result.

The laver color detector 13 projects light from the light-emitting diode to the laver material, and determines whether the color corresponds to any color from black to brown based on the amount of light (lightness) of the reflected light from the laver material. Whether or not it is possible can be measured as an optical analog sensor. Further, in the above-described embodiment, the laver color input unit 12 is configured to output the correction value based on only the color of the laver material, but the correction value is calculated in consideration of the gloss of the laver material together with the color of the laver material. A configuration for outputting is also possible.

[0075]

As described above, according to the present invention, the concentration detecting means optically detects the concentration of the nori preparation liquid obtained by mixing the nori raw material and water, and the nori color detecting means detects the color of the nori relating to the nori preparation liquid. Is detected, and the concentration control means adjusts and controls the concentration of the nori preparation liquid based on the detected concentration, the detected laver color, and the set concentration set by the concentration setting means. The concentration of the laver mixture can be precisely adjusted and controlled to the target set concentration suitable for the characteristics of various laver raw materials, regardless of the differences in the characteristics, quality, varieties, conditions, etc. of the laver raw algae. This has the effect that the paper leaf nori can be adapted to the target quality. Further, in the device of the present invention, the correction calculation means corrects the nori color component included in the detected density with the detected nori color,
The deviation concentration calculation unit calculates the deviation concentration from the corrected detected concentration and the set concentration, and the laver adjusting means adjusts the concentration of the laver preparation liquid based on the deviation concentration, so that the reference becomes a reference for feedback control. The detected concentration itself can be corrected in the preceding stage of the control system, which has an effect that the concentration of the seaweed preparation can be appropriately controlled. Further, in the device of the present invention, the nori color component included in the deviation density calculated by the deviation density calculation unit is corrected by the detection laver color by the correction calculation means, and the density adjustment means is adjusted by the density adjustment means based on the corrected deviation density. Because I adjusted the concentration of the solution,
The correction can be performed at a later stage of the feedback control, and the concentration of the nori mixture can be appropriately controlled. Further, in another apparatus of the present invention, the concentration detecting means optically detects the concentration of the laver preparation liquid obtained by mixing the laver raw material and water, and sets the degree of the laver color relating to the laver preparation liquid by the laver color inputting means. Since the concentration control means adjusts and controls the concentration of the seaweed preparation liquid based on the detected concentration detected, the input degree of nori color and the set concentration set by the concentration setting means, the adjustment is performed. The precise adjustment and control of the concentration of the nori preparation liquid to be set to the target concentration suitable for the characteristics of the various nori raw materials is simple regardless of the differences in the characteristics, quality, varieties, and conditions of the nori progenitor algae. This is possible with the configuration, and has an effect that the paper leaf nori as the final product can be adapted to the target quality. In another apparatus of the present invention, the nori color component contained in the detected density is corrected by the degree of the nori color input by the correction calculating means, and a deviation density calculating unit calculates a deviation from the corrected detected density and the set density. Since the concentration was calculated and the concentration of the laver preparation liquid was adjusted by the concentration adjusting means based on the deviation concentration,
The detected concentration itself, which is a reference for the feedback control, can be corrected in the previous stage of the control system, and the concentration of the seaweed preparation can be appropriately controlled. Also,
In another apparatus of the present invention, the nori color component included in the deviation density calculated by the deviation density calculation unit is corrected by the degree of the nori color input by the correction calculation means, and the density adjustment is performed based on the corrected deviation density. Since the means adjusts the concentration of the nori mixture, the correction can be made at the latter stage of the feedback control, and the concentration of the nori mixture can be appropriately controlled. Further, in the present invention or the apparatus of the present invention, the concentration adjustment of the nori preparation liquid can be made even more accurate and quick because the nori preparation liquid is adjusted to be substantially mixed near a preset concentration. It has the effect of becoming. Further, in the method of the present invention, the color of the laver of the laver material is detected as a detected laver color, and the concentration of the laver mixture obtained by mixing the detected laver material and water is optically detected as a detection concentration, and The detected concentration is corrected with the detected laver color, and the concentration of the laver mixture is adjusted to a preset concentration based on the corrected detected concentration, so that the concentration of the laver mixture to be adjusted is adjusted. Can be controlled to the target set concentration irrespective of the difference in characteristics, quality, variety, state, etc. of the nori original algae, which has the effect that the paper leaf nori as the final product can be adapted to the target quality . Further, in the method of the present invention, the concentration of the seaweed preparation liquid is optically detected as a detection concentration, and a seaweed preparation liquid whose concentration is controlled based on the detected concentration is made, and the papermaking is made by the above-mentioned making. The detected seaweed color is detected as a detected seaweed color, the detected concentration is corrected by the detected seaweed color, and the concentration of the seaweed preparation liquid is adjusted and controlled to a preset concentration based on the corrected detected concentration. Therefore, the concentration of the nori preparation liquid to be adjusted can be controlled to the target set concentration irrespective of the difference in the characteristics, quality, variety, state, etc. of the nori original algae. This has the effect that it can be adapted to the target quality. Furthermore, in the method of the present invention, the concentration of the laver preparation is adjusted by adjusting the concentration of the laver preparation near the preset concentration in the previous stage of the control for adjusting the concentration of the laver preparation. There is an effect that the accuracy and speed can be increased.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of a laver preparation liquid concentration control device according to the present invention.

FIG. 2 is a diagram illustrating the principle of another concentration control device for a seaweed preparation according to the present invention.

FIG. 3 is a diagram illustrating the principle of another method for controlling the concentration of a laver preparation liquid according to the present invention.

FIG. 4 is an overall block configuration diagram of a concentration control device for a seaweed preparation liquid according to an embodiment of the present invention.

FIG. 5 is a schematic diagram for explaining production from preparation of nori to papermaking and drying in the apparatus of the embodiment shown in FIG. 4;

FIG. 6 is a detailed configuration diagram of a paper making unit and a laver color detecting unit in the apparatus of the embodiment shown in FIG. 4;

FIG. 7 is an operation flowchart of a method for controlling a concentration of a seaweed preparation liquid according to the embodiment shown in FIG. 3;

FIG. 8 is an operation flowchart of a method for controlling the concentration of a seaweed preparation liquid according to another embodiment of the present invention.

FIG. 9 is a diagram illustrating a detection mode of a laver color detection unit according to another embodiment of the present invention.

FIG. 10 is an overall block configuration diagram of a laver preparation liquid concentration control device according to another embodiment of the present invention.

11 is a correction voltage characteristic diagram of a laver color input unit in the embodiment device shown in FIG.

FIG. 12 is an overall block configuration diagram of a conventional laver preparation liquid concentration control device.

FIG. 13 is a front view of a control panel in the conventional device.

[Explanation of symbols]

 Reference Signs List 4 density control section (density control means) 6 display section (display means) 8 density adjustment section 11 density setting section (density setting means) 12 laver color input section 21 density detection section (density detection means) 22 laver color detection section (laver) 41 Color correction means 41 Correction calculation part 42 Deviation density calculation part 43 Concentration control drive part 83 Water supply pump 84 Drainage pump 100 Paper making part 111 Set value generator 120 Setting dial 121 Correction voltage output part 200 Drying part 800 Nori preparation liquid

Continuation of the front page (56) References JP-A-61-28371 (JP, A) JP-A-61-227766 (JP, A) JP-A-7-75533 (JP, A) JP-A-7-123953 (JP, A) JP-A-7-155144 (JP, A) JP-A-62-111398 (JP, U) JP-A-3-56394 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB Name) A23L 1/337 103

Claims (10)

(57) [Claims] 1. A laver preparation liquid concentration control device for controlling the concentration of a laver preparation liquid obtained by mixing a laver raw material and water, wherein: a concentration setting means for setting a set concentration of the laver preparation liquid as a control target value; Concentration detection means for optically detecting the current concentration of the mixed laver preparation solution and outputting it as a detection concentration; laver color detection means for detecting the color of laver and outputting it as a detected laver color; A concentration control means for adjusting and controlling the concentration of the laver preparation liquid based on the detected concentration and the detected laver color. 2. The concentration control device according to claim 1, wherein the concentration control means corrects the nori color component contained in the detected concentration with the detected nori color, and performs the corrected detection. A concentration controller for calculating a deviation concentration by comparing a concentration with a set concentration; and a concentration controller for adjusting the concentration of the laver preparation liquid based on the deviation concentration. . 3. The concentration control device for seaweed preparation according to claim 1, wherein the concentration control means is included in a deviation concentration calculation unit for calculating a deviation concentration by comparing the detected concentration with a set concentration. A concentration control device for laver preparation liquid, comprising: a correction operation unit for correcting a laver color component based on a detected laver color; and a concentration adjusting unit for adjusting the concentration of the laver preparation solution based on the corrected deviation density. 4. A concentration control device for controlling the concentration of a laver preparation liquid obtained by mixing a laver raw material and water, wherein: a concentration setting means for setting a set concentration of the laver preparation liquid as a control target value; Concentration detection means for optically detecting the current concentration of the mixed laver preparation liquid and outputting it as a detected concentration; laver color input means for setting and inputting the degree of shading of the laver color; A concentration control means for adjusting and controlling the concentration of the laver preparation liquid based on the detected concentration and the inputted degree of the laver color. 5. The laver preparation liquid concentration control device according to claim 4, wherein the concentration controller is configured to correct a laver color component included in the detected density according to a degree of the inputted laver color, Nori preparation comprising: a deviation concentration calculating section for calculating a deviation concentration by a comparison operation between a corrected detected concentration and a set concentration; and concentration adjusting means for adjusting the concentration of the nori preparation liquid based on the deviation concentration. Liquid concentration control device. 6. The concentration control device according to claim 4, wherein the concentration control means is included in a deviation concentration calculating section for calculating a deviation concentration by comparing the detected concentration with a set concentration. Nori preparation liquid concentration, comprising: a correction calculating means for correcting the nori color component according to the degree of the input nori color, and concentration adjusting means for adjusting the concentration of the nori preparation liquid based on the corrected deviation density. Control device. 7. The laver preparation liquid concentration control device according to any one of claims 1 to 6, wherein the laver preparation liquid is adjusted to be substantially mixed near a preset concentration. Nori mixture liquid concentration control device. 8. A method for controlling the concentration of a laver mixture obtained by mixing a laver raw material and water, wherein the laver color of the laver raw material is detected as a detected laver color. Optically detects the concentration of the nori preparation liquid obtained by mixing the nori as a detection concentration, corrects the detected detection concentration with the detected nori color, and prepares a nori preparation to a preset concentration based on the corrected detection concentration. A method for controlling the concentration of a seaweed preparation liquid, comprising controlling the liquid. 9. A method for controlling the concentration of a seaweed preparation liquid obtained by mixing a seaweed raw material and water, wherein the concentration of the seaweed preparation liquid is optically detected as a detected concentration, and the concentration of the seaweed preparation liquid is detected based on the detected concentration. Nori concentration-controlled laver preparation liquid, the color of the laver paper-leafed by the papermaking is detected as a detected laver color, the detected concentration is corrected by the detected laver color, the corrected detection A method for controlling the concentration of a laver preparation liquid, comprising controlling the laver preparation liquid to a preset concentration based on the concentration. 10. The laver preparation concentration control method according to claim 8 or 9, wherein the laver preparation liquid is prepared by adjusting a mixture of the laver preparation liquid which is substantially mixed near a preset concentration. Method.