JP2809920B2 - Oven control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oven control apparatus used for an oven apparatus for producing various kinds of bread, confectionery and the like, and more particularly to an oven control apparatus for producing confectionery and the like at the same level as an expert.

[0002]

2. Description of the Related Art There are various types of oven apparatuses of this type depending on the type of confectionery, but an oven apparatus as shown in FIG. 4 is generally used. That is, in this oven apparatus, after mixing and mixing an appropriate amount of flour, oil and fat, sugar, water and other materials in the mixer-1, the mixture is guided to the roller 2 having a large number of confectionery molds, and a predetermined number of confectionery mixes. It is cut into a mold and transported by the conveyor 3. At this time, while controlling the opening degree of the gas burner in each zone,
Conveyor 3 Ueno die-cut has been confectionery for mixing the dough, the product
Preheating the heating zone 4 ₁ and tissue formation zone 4 ₂ affecting the thickness, moisture adjustment zone 4 ₃ affecting the moisture of the product, by passing through the zone 4 ₄ ... for baking affect baked color product Comes out as a baked product from the last zone. At this time, the control of the oven apparatus is performed by adjusting the opening degree of, for example, about ten gas burners installed in each zone.

[0003] Thus, among the above-described oven apparatus, for example, consider the baked for Zone 4 ₄ Other
Zone required for example confectionery thickness, the weight, moisture
In addition , it is necessary to execute appropriate temperature control in order to obtain a product (confectionery) having an appropriate baked color while grasping the baking color and the like and adjusting the opening degree of the gas burner based on the grasped result. By the way, conventionally, several temperature control methods have been used in controlling the temperature of each zone. (1) One is a method in which the operator controls the temperature of each zone while manually adjusting the gas burner of each zone based on past experience and intuition.

(2) The other one is an example that has been widely adopted in recent years. In this example, a control system of a confectionery oven is considered as a closed loop, a transfer function in the closed loop is modeled, and a process control system is used. In this method, temperature control is performed based on the control theory actually used.

FIG. 5 is a diagram showing a configuration of an oven control device using such a control theory. That is, the apparatus guides the set value SV such as the baked color and thickness of the confectionery and the baked color and thickness detected from the last zone of the oven to the deviation calculating means 6. The PID (P: proportional, I: integral, D: derivative) adjustment calculation is executed by the calculation unit 7 so that the deviation becomes zero, and based on the operation output (zone temperature signal) obtained as the adjustment calculation result. This is a method of obtaining a desired confectionery by selecting the number of gas burners in the zone of the confectionery oven device 8 or adjusting the opening degree.

[0006]

However, the former method of controlling the temperature based on the experience and intuition of the operator himself has a large individual difference and is influenced by the environmental conditions at that time. Difficult to get.

On the other hand, in the latter feedback control system modeled using a transfer function or the like, it is not possible to create a strict model, and many conditions such as thickness, moisture, weight, etc.
It is difficult to adjust the temperature from a comprehensive point of view while taking into account the amount, the color of the burn, and the like, and only an effect similar to that of the manual adjustment by the operator can be obtained.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an oven control apparatus which eliminates inconveniences caused by individual differences and can surely produce confectionery and the like having the same quality as an expert.

[0009]

SUMMARY OF THE INVENTION According to the present invention, there is provided an oven apparatus comprising a plurality of zones.
Oven control device in each zone
Data collection means for collecting various data necessary for cooking ;
Control target zone collected by this data collection means
The first data required in this or this first data and other
Based on the second data collected in the zone
A fuzzy inference operation is performed by using a fuzzy control rule based on an empirical rule of an expert, and fuzzy inference operation means for determining the temperature of each zone, and a temperature of the zone based on the temperature obtained by the operation means. And a temperature control means for controlling the temperature. In addition, another departure
Ming is a pre-heating zone that affects the thickness of the product and
Tissue forming zone and moisture regulation affecting product moisture
Zones and baking zones that affect the baking color of the product
And various data required according to the function of these zones.
Data collection means for collecting data, and the data collection means
Of the various data collected in
Fuzzy control loop for thickness
Fuzzy inference operation using the
Fuzzy inference operation means and set for preheating zone to be determined
Fuzzy inference calculating means for a weaving zone;
Out of various data collected by the collection means
Affect product moisture, including data collected for
Extract data and create fuzzy control rules for moisture
Perform fuzzy inference operation to determine zone temperature
Fuzzy inference calculating means for the moisture control zone,
Out of various data collected by
Affects the baked color, including data collected for
Fuzzy system for baked colors
Fuzzy inference operation is performed using the
Fuzzy inference operation means for the baking zone for determining the degree
And the fuzzy inference calculation means for each zone
Using the zone temperature obtained from
An oven control device for controlling.

[0010]

Therefore, according to the present invention, various data collected by the data collecting means can be obtained by taking the above measures.
After acquiring at least one data required according to the function of each zone by the fuzzy inference operation means, a fuzzy control rule based on a predetermined expert empirical rule, that is, a fuzzy membership function is obtained. determining the temperature of the zone to be required with, and controls the temperature of the zone at a temperature control means on the basis of this temperature, each zone
The product step by step under appropriate temperature control
Confectionery, etc., at the same level as a specialist.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A control device according to the present invention is a conventional oven.
It is an improvement of the control device in the device.
An embodiment of a characteristic part of the apparatus of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, reference numeral 11 denotes a data collecting means, which is a function of each zone , for example, a first zone.
(Eg, a preheating heating zone) and a second zone (eg, a set
Zone that affects the product thickness).
Data, the third zone (for example, the moisture control zone)
Data affecting product moisture, zone 4 (eg,
Baking zone) will affect the baking color of the product.
Data to be given, such as baking color, thickness, weight, temperature, humidity,
At least one or more data of heat flow rate, wind speed and the like are cyclically fetched at a predetermined cycle, and then stored in an internal memory (not shown).

Reference numeral 12 denotes a program memory for storing program data and other fixed data, and reference numeral 13 denotes a knowledge base memory for storing fuzzy control rules based on the empirical rules of experts.

A fuzzy inference 14 fetches the data collected by the data collection means 11 and executes a fuzzy inference operation using a fuzzy control rule stored in the knowledge base memory 13 to determine an operation temperature. Although it is a computing means and often uses a controller in a process control system in terms of hardware, for example, when it is composed of a higher-level computer and a lower-level device (controller), the configuration is such that the higher-level computer has its role and function. You may.

Reference numeral 15 denotes temperature control means for controlling the number of gas burners installed in a required zone based on the operation temperature determined by the fuzzy inference operation means 14, or controlling the opening degree of the gas burners. Next, the operation of the device configured as described above will be described. A method for determining the temperature of, for example, four zones among the four zones of the confectionery oven device will be described.

First, in the data collection means 11, the fourth zone
From products and from products output from zone 4
After importing the necessary data, for example,
It is sent to the Z inference operation means 14. Here, the fuzzy
The logical operation means 14 stores the program in the program memory 12
Knowledge about the data collection means 11 based on the
Operation by applying the fuzzy control rules of the source memory 13
Determine the working temperature. Incidentally, the rule of thumb of experts, namely
Suppose the following two are considered as fuzzy control rules. Rule 1 IF (burning color is slightly dark) THEN (slightly lower because the setting temperature of 4 zones is high) Rule 2 IF (burning color is quite dark) THEN (considerably lower because the setting temperature of 4 zones is high)
)The first zone (preheating zone), the second zone (group
Weaving zone) affects the thickness, and specifically, Rule 1 IF (slightly thin) THEN (Slightly lower because the set temperature of zone 1 and 2 is high
) Rule 2 IF (very thin) THEN (Because the set temperature of the 1st and 2nd zones is high,
Ger It becomes. The third zone (moisture control zone) affects moisture and is specific
In Rule 1 IF (slightly less water) THEN (Slightly lower because the set temperature of three zones is high) Rule 2 IF (water content is very low) THEN (Because the set temperature of three zones is high, it is considerably lowered
) It becomes.

Therefore, in the fuzzy inference operation means 14, rules 22 and 23 relating to the burning color shown in FIG. 3 as well as the burning color measurement data 21 as shown in steps ST1 and ST2 in FIG. read out. These two
In the two rules 22 and 23, the horizontal axis indicates a set of grilled colors and the vertical axis indicates a degree (grade) based on expert experience, experiments, and the like. Then, the fuzzy inference calculating means 14 obtains the degree of conformity 24 (shaded portion) with respect to the burnt-color measurement data 21 by applying the rule 22 to the burnt-color measurement data 21, and subsequently, the rule 23 for the burnt-color measurement data 21 Is obtained (ST3). Thereafter, by combining these two degrees of conformity, the degree of conformity of the entire rule consisting of the hatched portion in FIG. 26 is determined (ST4).
Further, if the center of gravity 27 is obtained from the fitness of these rules as a whole, the center of gravity 27 becomes
The operating temperature of the zone. That is, the fuzzy inference calculating means 14 outputs a command to lower the current temperature by about 1.2 ° C. based on the center of gravity 27 in FIG.

The temperature control means 15 controls the oven temperature in four zones by adjusting, for example, the opening of the gas burner based on the contents of the command from the fuzzy inference calculation means 14.

Therefore, according to the configuration of the above-described embodiment, after fetching various data necessary for making a confectionery or the like, the operating temperature is obtained using the fuzzy control rules related to the data. Therefore, temperature control of each zone can be automatically executed based on a judgment level equivalent to that of an expert, so that uniform bread, confectionery, and the like can always be easily produced, and various conventional problems can be improved. . The present invention can be variously modified and implemented without departing from the gist thereof.

[0019]

According to the present invention as described in the foregoing, it is possible to eliminate problems caused by individual differences such as the conventional, the
Products are manufactured step by step under appropriate temperature control for each zone.
It is possible to provide an oven control device which can be raised and can surely produce bread, confectionery, and the like having the same quality as a specialist.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an oven control device according to the present invention.

FIG. 2 is a view for explaining the operation of the fuzzy inference calculating means of FIG. 1;

FIG. 3 is an explanatory diagram for obtaining an operating temperature using a fuzzy control rule.

FIG. 4 is a schematic configuration diagram of a conventional general confectionery oven apparatus for making confectionery and the like.

FIG. 5 is a configuration diagram of a conventional oven control device.

[Explanation of symbols]

11 data collection means, 13 knowledge base memory, 1
4 ... fuzzy inference operation means, 15 ... temperature control means.

Continuation of front page (56) References JP-A-3-5622 (JP, A) JP-A-3-30626 (JP, A) JP-A-3-158111 (JP, A) JP-A-5-18540 (JP) , A) JP-A-51-26278 (JP, A) JP-A-47-19075 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A21B 1/00-7/00 A21D 8/06 F24C 7/00

Claims (2)

(57) [Claims] (1)Oven equipment consisting of multiple zones
Oven control device in the Data to collect various data required for cooking in each zone
Data collection means, Control target zone collected by this data collection means
The first data required in this or this first data and other
Based on the second data collected in the zone
hand, Fuzzy control rules based on empirical rules by experts
Perform a fuzzy inference operation usingEach of the aboveZone temperature
Fuzzy inference calculating means for determining the
Temperature control means for controlling the temperature of the
And oven control device. (2)Oven equipment consisting of multiple zones
Oven control device in the Preheating heating zones and textures affecting product thickness
Zone and It connects to the output side of this tissue formation zone and affects the moisture of the product.
A moisture control zone that affects Connect to the output side of this moisture control zone and bake the product
Baking zones that affect color, Collects various data required according to the functions of these zones.
Data collection means to collect, Of the various data collected by this data collection means,
Extract data that affects the thickness of the product
Performs fuzzy inference operations using fuzzy control rules
To determine the zone temperature
Logic operation means and fuzzy inference operator for tissue formation zone
Steps and Various data collected by the data collection means
Data that affects the moisture content of the product
Fuzzy Reasoning Operation Using Fuzzy Control Rules for
The moisture control zone to determine the zone temperature.
Zee inference operation means, Various data collected by the data collection means
Data that affects the color of the image
Fuzzy control rules for raised colors Fuzzy
Baking zone that performs logical operation and determines zone temperature
Fuzzy inference operation means for Obtained by the fuzzy inference means for each of these zones
The temperature of the corresponding zone using the zone temperature
An oven control device, characterized in that: