TWI252386B - Method for performing canned food fuzzy-controlled sterilization by basic function of PLC, and on-line calculation and forecast for F0 value - Google Patents

Abstract

The invention provides a method for performing canned food fuzzy-controlled sterilization by basic function of PLC, and on-line calculation and forecast for F0 value, which is applied with important parameters like sterilization temperature, and time series forecast and control. In the aspect of temperature control, a basic function of PLC is used to write the configured control module on lookup table calculated from fuzzy control, and to lower the temperature error and improve the control accuracy of PLC. In the aspect of sterilization time control, based on the method of PC-based gray forecast, all estimated values are used as a basis of sterilization termination for reducing over-sterilization phenomena, and then sterilization value (F0) is written into PLC ladder diagram in a lookup table that can achieve on-line sterilization value calculation. Further, with PC combined with PLC for communication and internal network of PLC for remote monitoring, it can increase the accuracy and convenience for forecast control of canned food sterilization parameters and also save extra hardware cost.

Description

1252386 V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a method of predicting control in combination with food sterilization parameters to enable precise control capabilities. [Prior Art]

According to the 'consistency of sealed canned containers, the activity of microorganisms and enzymes in the cans must be treated as sterilization or high temperature sterilization. Although it can prevent the food from killing, the food is organized. Its commercial value, so the purpose of sterilization and killing is to use the commercial sterilization method of the minimum industry. In addition, the internal food spoilage microorganisms are inactivated and swelled; in addition, the sterilization process of canned foods, the most important parameter in the process of food processing is the time required, and the sterilization temperature is too low or too high respectively. The time of bactericidal bacteria is based on the F 〇 value (the bactericidal value is different at a certain temperature to make it completely inert, and there are different F , values, currently, that is, with 1 2 1 · 1 °c ( 2 5 0 ° The F program controller (PLC) performs the canning method, especially the one that can improve the small PLC function and improve the sterilization process. The food inside can be stored for a period of time, but the heat treatment is appropriate, so that it can be destroyed and can no longer function. Law (Sterilizati0I1). And the corruption, but often such a degree, color, aroma, etc. will be deteriorated and the degree of heat loss, generally in order to achieve effective temperature and time is better, that is, the current food and food canned sterilization The purpose is also to set the tank so that it does not cause corrosion during the normal sale. The heating in the retort is not negligible - the "temperature at the time of sterilization" and the regulation of r sterilization are set. ± 〇 5 t insufficient or excessive sterilization, and kill) to determine, it is the sterilization time of a certain bacteria, according to the product and the use of F 0 value refers to the comparative sterilization process) Compare, such as F _

1252386 V. Description of invention (2) 6. The equivalent of the ability at 1 2 1 1 is stronger. When the iron problem also includes the pressure exerted by the sterilization, whether it is the invention to break through the standard, it can be known that the killing parameters, and then the current manual control, and not the safety of the sterilized product, but lost, and will Increasing the bacteria-producing equipment also has an operation to reduce the difference between people, the relative product system, to control the temperature and the need to do F 0 value development research institute to the new product characteristics (viscosity should be sterilization time) The long equipment, the first time to determine its sterilization time, it can be measured in different positions of the canned clock back to a temperature and then accumulate. °C (except for the avoidable, the temperature of the bacteria as before or over will be built The pressure of the product produced by the expensive work is fixed, inside, inside, short, its F 〇 prescription, measuring number, when killing 2 5 0 °F) sterilization for 6 minutes, the higher the temperature, the sterilization temperature, time parameters, causing sterilization If the exhaust in the process of bacteria is complete, the phenomenon of non-expansion tanks and cans during cooling, etc., it is not the reason why it is mentioned here and not mentioned. The degree and the daily observance are extremely important for food killing. Product factory In terms of bactericidal treatment, most of them are described as the phenomenon that the temperature at the time of sterilization is too low or too high, and the sterilization is excessive, and the quality of the food can be reduced and the nutrition of the nutrients can be ensured. The PLC that kills the moon and the moon is used as the control axis, which replaces the dangerous and man-made temperature and pressure caused by man-made accidents. However, it is only for the valve control, and now, in the development of new products, it is usually the factory. Please check the unit (food industry = equipment "integrator" for measuring F〇 value, for grain, etc.) and determine the value of F 并 并 并 并 并 并 并 并 并 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较 较It is decided that I 2 2 is placed with six temperature sensors respectively, and the temperature of the coldest point in the center of each tank is calculated. The mathematical model of each of the two people calculates the result, and the time corresponding to the F 〇 value is obtained. That is

$6. V. INSTRUCTIONS (3) The valve is cooled and begins to cool. However, in the same sterilization time, each batch of the same sterilization time, even if it is all, the prolonged sterilization time must be the same, so the food is flavored. Therefore, the inventor is directed at the i system: affecting the product and time, doing the control method on the temperature value in the ::::: function of the number of functions and the purpose of achieving commercial sterilization;; production,; less temperature error Under the minimum problem, it can reduce the function of the single-type PLC. And the right of the garden's ^ shape 'and enhance the basic simplicity [the content of the invention] Inherited the 'inventor to break through the control of the temperature of each bacteria, using the lack of ^ ^ two, think about the method of killing control theory ^The controller (PLC) reduces the temperature error according to the fuzzy type; L 』1 〇〇 〇〇 = 2:! Set the control mode to use the PLC ladder diagram to write using the interval method. Into the second type? Benefit control precision ' has regular adjustments. And in the kill gf / dish on the f according to ... and will get the % =: for the face to kill the second service programmable controller (PLC) helmet method to write. Ten factory power to eliminate the value, to grams in addition, can be a community盥π and: the lack of writing different prediction formula; Ρ mouth " PC and private controller (PLC) communication far surname and 矸 (four): to achieve remote monitoring ...,: 俾 便 便 便. The accuracy of the early control of the sterilization parameters of the canned food and the "the main purpose of the invention is to provide a basic function of the 1252386 five, invention description (4) program controller (PLC) for canned food blur The method of controlling the calculation and prediction of sterilization is mainly for the control of the temperature during sterilization and the green value of killing Q. In the control of sterilization temperature, the detection of fuzzy control is used, and the lookup table is used by the PLC ladder diagram. Interval method writes 'in addition and method temperature control has a basis and has a regular adjustment, and in the determination of sterilization, the bacteria value (F.) on the use of the PLC line directly calculate the value of ^, also written in the two ways Into the PLC P are ladder diagram β, so that the PLC has fuzzy in the temperature control;: the basis and line of the decision The function of calculating the F value, * and controlling the sterilization of the end of the sterilized process of excessive sterilization or sterilization, also enhances the function of the PLC in the sterilization control. Small object of the invention is It can be combined with the communication link between Pc and programmable control crying (PLC) and the internal network of programmable controller, °, for monitoring purposes, to provide the food industry, the factory to the [implementation] heart-to-heart. The following foods for this hairdressing are mainly for the forecasting and control table method (into, so that the time will be recovered, the reviewer will have a better understanding of the invention, and the description will be given.) The basic function of the programmable controller (pLC) paste control sterilization and FG value online calculation and prediction method", 1 for the sterilization process of the important parameters of the sterilization process, time into / line system, in the sterilization temperature control Based on the lookup table in fuzzy control, the plc ladder diagram uses the interval method to write the temperature control and has a regular adjustment, and in the determination of the bacterial value (F0), the pC-base combined gray prediction Way, the predicted value as the basis for the end of the sterilization, but also the use of straight lines 1252386 pLC

The value of the juice is different, and the method of the table is also written. The basis of fuzzy control on the temperature control and the line θ ’ enable the PLC to improve the sterilization process and save the hardware equipment*. The heart value regenerator (PLC) communication link can control or transmit the internal network of the qi and π = narration device programmable controller (PLC), and the temperature of the sterilizing process by the Laoshan PC-base method. Pressure, valve parts = by the computer network and the collection of on-site information, the ^^,,,, ^ network of the network can make the monitoring staff and managers through the general browsing::, know 'to reach far The purpose of monitoring. Just pass and quantify the output angle of the single output, the system uses the single table method to calculate the temperature of the data. The fuzzy controller for sterilization temperature control, the temperature error value (Temperature error) and the current (Current) fuzzy attribution function are used to adjust the temperature error value attribution function range and output variables to discuss the stability of the sterilization process temperature control. In other words, in other words, the input single output fuzzy control method, the fuzzy control lookup table is made to determine the control table, and is written into the PLC by means of the plc step, so that the control mode of the PLC is the root setting, and the fuzzy control The device can be applied to different settings of sterilization system. The prepared lookup table is calculated by off-line, and is written into the PLC ladder diagram in interval mode to adjust various parameters (temperature error range and output) during temperature control of the sterilization kettle. There is a basis for this, and the performance of the small PLC is improved. In terms of determining the bactericidal value (F〇) of the sterilization time, first calculate the F 0 value by using 〇ff-line to calculate the F 0 value from 0 5 3 °c every 0 · 5 °c, and create a table (such as a picture), will

1252386 V. The invention shows that the second table is written in the PLC ladder diagram, and is calculated by looking up the table, and it is confirmed that there is no difference between the results and the results of the broad calculation according to the formula to prove the method of the above figure 5 of the present invention. The equipment is mainly horizontal sterilizer 1 (such as the first _ CH two 丄 and automatic component system, and the selection of F. Value ... 4 - bacteria steam two over the double, re-modified corn starch 'where 'the horizontal sterilization kettle kills In five stages, namely, "Exhaust", "Elevation", "eight", "cold" and "drainage" (male two "4" y dad's air discharge, so that daddy; Incomplete gas will result in incomplete sterilization, while::: hot 充满 full is the effective sterilization time, and ί sterilized the last 42% of the time 0 5 °c 5 Η ^ ^ wood and 囷 〉 〉 At the target temperature of 121 t, it is maintained at the temperature of sterilization. ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° At the stage, cool down A: water, "heshui" means the end of sterilization, start _ = 々卩, The pressure in the dad will drop suddenly due to the temperature drop, which may cause the pressure to drop. The "influent water" is injected with a large amount of cold water. The degree of progress: the drainage is to exclude the daddy water. After the completion, it represents the end of sterilization: Horizontal sterilization dad 1 (as shown in the second figure) and automatic system, first, horizontal sterilization kettle 1 with test tank 1 1 , and automatic unit Τ : system includes proportional control valve 1 2 , solenoid valve &quot ;, gas... programmable controller 15 (PLC), human-machine interface, second page, page 10, 1252386 I, invention description (7) ^ " TCP/IP converter, network camera server and industrial computer 1 7 The sterilization temperature control process of the present invention is divided into two parts: (丨) open loop control 13⁄4 4 and (2) closed loop control phase - fuzzy control (such as fourth, ^ sterilization process, exhaust phase system The strip gas is supplied in an open loop control mode, and the steam valve is heated in a fully open manner. The valve opening degree of the steam valve and the exhaust valve in the exhaust stage must be fully open to ensure complete exhaust, and the exhaust gas is exhausted. At least 5 minutes and a temperature of at least 5, or at least 6 minutes The temperature is at least 1 〇 4 t, or at least 7 minutes and the temperature is at least 1 〇 2 ° C. When the temperature is close to the sterilization temperature when the temperature is raised, the temperature error value is within the range set by the lookup table. That is, switching to the closed-loop control phase (fuzzy control) for temperature control, through the fuzzification, fuzzy inference, and defuzzification, the obtained "to 叩taMe, this 丨(10) let the table be written into the pLC ladder diagram in the interval The obtained temperature observation value 'after comparison with the lookup table, the output control amount (current) is obtained, and the therapeutic gas proportional valve opening degree is controlled, as shown in the fifth figure. Further, the modified corn starch (CH-20) was heated and stirred to 6 Torr in two different ratios of 1% (w/v) and 3 Torr/w (w/v). The crucible is placed in a test tank, and the sterilization process measures its/dishness, undershoot, and calculates the F ◦ value. Secondly, the test was carried out with two different ratios of l% (w/v), 3% (w/v) modified corn starch and different set F 〇 values. The method is as follows: Method (1): (1) Take the PC temperature and calculate the value on the line, reach or exceed, set the value (% value is assumed to be 6), end the sterilization, release the cooling 4 ' order, the process is as shown in the sixth figure, (2) Calculate the F〇 value on the tank temperature line to 'reach or exceed the set value 〇·8 times (F 〇 is 4· 8 ),

Page 11 1252386 ------- V. Description of the invention (8) End sterilization, release the cooling instruction, the flow is as shown in the sixth figure. Method (2): Take the tank temperature from PC, calculate the f ◦ value obtained after the calculation to establish the gray member/Bei pepper type, and carry out the model test. The test is level 1 (Q 〇〇d ) to predict the next day. The FQ value 'if the predicted F 〇 value reaches or exceeds the set value (F 0 value is β), the sterilization is terminated, and the cooling command is issued. If the model test result is not good, the actual calculated F ◦ value is compared with the set value to determine whether or not to end the sterilization. The flow is as shown in the seventh figure. Method (2) · Write the relationship between the tank temperature F 〇 value in the form of a look-up table = in the ladder diagram ‘ to obtain F by looking up the table. Value, F. The value reaches or exceeds the set value (F〇 value is 6), the sterilization is finished, and the cooling command is issued. Use pc as the monitoring (take the tank temperature and F〇 value), the flow is as shown in the eighth figure. From the 'square' and (-) is to prove the cooling of the literature: the bacteria 2 also consider ' # sterilization period should account for 8% of the total F value, and the square is f, There is also a bactericidal effect to avoid excessive killing, ' '(:) is the current ash prediction to solve the over-sterilization ( (2) 疋 directly use the PLC to calculate the F , value, to achieve online

There is no need to add extra hardware. V. The results obtained with U(W/V) and 3% (W/V) samples are as shown in the ninth and tenth figures. The standard deviation of the two methods used in one sample is The kind of $颏 is not U1, so it can prove the way of checking the invention::. The value is not obvious, and the poor sterilization is based on PLC as the control axis. Hey, if you want to measure the unit, you can use it for this, and because of the PLC calculation, you can use the human-machine interface to bless, and the one that you don't know is the 嗜 轳 # # # μ ^ directly 颏 F 〇 value. At present, the apprentice pays for the day... (3) is used as the basis for all sterilization time in the future.

Page 12 1252386 Five inventions description (9): hand ΐ ::; bactericidal state may not be the same, if there may be steam interference and heat the same, but each can be a ^ ^ ^ month of the test, although it is set to F 〇 Value inventor: There is a difference in the sterilization time of Tairen products. Therefore, using the daily nn to calculate each sterilizing line by the 表kup table method, the F value of each batch of products can be ensured. All are in line with the regulations. Consolidated value: Ming system is controlled by computer, and the interface is controlled by the interface. It also accepts or controls the information and opening of the household. In addition, in the present system, Γ 〇 C and The program controller (PLC) communication link and the process == part of the network 1 to achieve the purpose of remote monitoring, first of this to send, and save the right to establish a monitoring system, which can be written, read and commented :L contact switch control and display actuation, etc., can be effective in application: 乂力 and: oral record process, can reduce personnel costs and economy:: bacteria: ϊ ΐ: force ί can also send out The e-mai 1 method is used as an alarm, and the batch is not suitable for the remote contact. In addition, the monitoring system uses the monitoring and quality control records as the navigation system. The road system can be monitored by three sterilization equipments such as Lai-type sterilization dad, net hundred right, and plate type sterilization kettle. The data can be transmitted to the remote computer without using the Datasocket to write the program. Just "accept". Due to the delivery to the network:: The change in the value of the whole sterilization process ϋ: Ξΐ: See, 1 in the form of a network camera: = 耘疋 合 合 疋 可 可 可 可 可 可 可 可 可 可 可 可 可 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋The monitoring software will be F. The change in value allows the test unit to know that the test unit can be provided as a food sterilization line.

1252386 V. Description of invention (10) Increase its convenience. According to the method of the above method, it is true that the goal, and the control of the control, to provide food is indeed feasible, because of the gist of the present invention. In summary, the high degree of creation, the patent requirements have been specified. It has not been covered by the scope of patents.

And the specific equipment f you 丨% M only for example, mainly refers to the accuracy of the mouth control by the hair + although the g mouth mouth control PL · C in the surgery and then included The function of the sauce and the preparation, and the remote monitoring, the integration of the wounds in the Weiwei, and the actual test ^Imbe has improved the lack of customary methods, and this is to confirm that the invention is indeed practical and The invention is based on the technical idea of the natural law, i, the utilization, the novelty and the progressiveness, and the invention is in accordance with the preferred embodiment of the present invention. Dry circumference. That is, the application, the deuteration and the modification according to the present invention are the 14th page of the invention patent garden, and the simple description of the drawing [the simple illustration] The first figure is a table showing the different temperatures in the PLC of the present invention. The next F 〇 value comparison. The second drawing is a schematic view of a horizontal sterilization kettle of the present invention. The third figure is a sterilization flow chart of the horizontal sterilization kettle of the present invention. The fourth figure is a flow chart of the sterilization control of the present invention. The fifth figure is a fuzzy control flow chart of the present invention. The sixth figure is a flow chart of the method (1) for determining the F 0 value. The seventh figure is a flow chart for determining the F 〇 value method (2).

The eighth graph is a flow chart for determining the F 〇 value of the present invention. (Method (3)) The ninth graph is a graph showing the F 〇 value change of the present invention by l% (w/v) CH-20, experimental expression and table lookup method. The tenth graph is a graph showing the F 〇 value change of the present invention by 3% (w / v) C Η - 2 0 by experimental expression and table lookup method. [Main component symbol description]

1 • · .. horizontal sterilizer 11 .... test tank 1 2 ____ proportional control valve 13 .... solenoid valve 1 4 .... pneumatic valve 1 5 • · ·. programmable controller ( PLC) 1 6 .... human machine interface 17 .... industrial grade computer

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Claims (1)

1252386 VI. Patent application scope 1. A method for calculating the canning &, paste control sterilization and Fg value on the line with a basic function programmable controller (PLC), is Z t ί : Ϊ f The sterilization temperature and time parameters are predicted and controlled. 2 5 CPLC) The method of determining the clamp method f 1^ ^ — clothing I i ookup tabl e ), can be programmed to cry: PLC) Order: Using the interval method to write into the pLC, during sterilization, "; Ϊ i Ϊ ΐ ^ ^ "J ^ ^ ^ ^ # ^ ^ ^ ^ ^ The basis for the end of the weight, and the bactericidal value (F〇) to look up the table (ι〇〇_ a 1 e ) is written in the ladder diagram of the programmable controller so that the bactericidal value is calculated (〇nl ine ). Port 2, as described in the i-th application of the patent scope ::3: 3) Carrying out fuzzy control of canned foods and the method of "p:c" on the F-value line", which can be combined with the communication link between PC and programmable controller (PLC). The internal network of the programmable controller (pLc) for the purpose of remote monitoring. . 3. As described in item i of the scope of patent application, “The basic function can be: f controller (PLC) for fuzzy control of canned foods and F. Value line: method of pre-seconds”, & sterilization The temperature control process is divided into two.卩为. (1) Open loop control phase (2) Closed loop control phase - fuzzy, system 2 = bacteria process '# gas phase in the open loop control mode to supply steam therapy hole valve to fully open heating, exhaust phase The valve opening degree of the steam valve and the exhaust valve is fully open, and when the temperature is close to the sterilization temperature when the temperature rises, the temperature mis-production value is within the range set by the look-up table, that is, the closed-loop control phase is switched. (Fuzzy Control) Temperature control, via page 16 1252386 VI. The scope of the patent application will be ambiguous, fuzzy inference, and defuzzification, and the lookup table will be obtained. Kup table) is written into the PLC ladder diagram in the interval mode, and the obtained temperature observation value is compared with the lookup table of pLc, and the output control amount (current) is obtained, and the vapor proportional valve opening degree is obtained. P — Hi, as described in the first paragraph of the patent application, “The basic function of the programmable controller (PLC) pushes a #人人4 匕月匕 ij calculation and prediction method 仃 Gan can a & product fuzzy control sterilization And h value line controller, for single wheel 22: fuzzy error in sterilization temperature control) and single output variable ~ text number - temperature block difference (Temperature uses triangle assignment letter ~ electricity ~ (Current) The fuzzy factor of the fuzzy function of the attribution function turns out the variable, "" the temperature error value of the surrounding function belongs to the range and shape of the function, that is, the stability controller that uses the temperature control of the single-pass sterilization process. (1) Early round out Fuzzy control method, the blur made Page 17