Fixation operation method and intelligent control system thereof

Abstract

The invention discloses a fixation operation method and an intelligent control system thereof, and relates to the technical field of tea fixation, and the intelligent control system comprises a temperature control subsystem, an automatic out-of-pot control system, a humidity control subsystem, a liquid crystal screen display control system and a signal terminal controller; and the temperature control subsystem adopts a modular design, comprises a temperature measurement sensor and a signal processing module, and is used for monitoring the process temperature of tea fixation in real time, and a temperature sensor output signal is converted into an analog signal through a signal processing and amplifying circuit and is transmitted to the signal terminal controller and the liquid crystal screen display control system. According to the enzyme deactivation operation method and the intelligent control system thereof, parameters such as temperature and humidity can be accurately controlled, and the enzyme deactivation process is ensured to be carried out under proper conditions; the color and taste of the tea leaves are favorably improved; and moreover, the energy cost can be effectively reduced, automatic control can be realized without human participation, and the investment of manpower in the aspect of controlling the fixation machine is reduced, so that the manpower cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of tea withering, in particular to a tea withering operation method and an intelligent control system thereof. Background Art

[0002] Tea withering is a step in the tea-making process that destroys and passivates the oxidase activity in fresh tea leaves through high temperature, inhibits the enzymatic oxidation of tea polyphenols in the fresh leaves, evaporates part of the moisture in the fresh leaves, softens the tea leaves, and facilitates rolling and shaping, while also emitting a green smell and promoting the formation of a good aroma.

[0003] At present, the control of the withering machine mainly relies on manual operation settings. Different operators and different withering machines will produce different withering effects, and it is impossible to achieve consistent withering operations, which leads to quality differences between the same teas. At the same time, the withering operation for different teas can only rely on the personal experience of the withering master to make corresponding adjustments to the withering process. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for operating the greening and an intelligent control system thereof, which solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent control system for the fixing operation, including a temperature control subsystem, an automatic out-of-pot control system, a humidity control subsystem, a liquid crystal display control system and a signal terminal controller;

[0006] The temperature control subsystem adopts a modular design and includes a temperature measurement sensor and a signal processing module, which is used to monitor the process temperature of tea leaf withering in real time. The output signal of the temperature sensor is converted into an analog signal through a signal processing and amplification circuit and transmitted to the signal terminal controller and the LCD display control system; the LCD display control system receives the collected temperature data, displays the withering temperature in real time, and controls the subsequent execution according to the tea leaf withering temperature input by the user;

[0007] The automatic out-of-pot control system includes an equipment control module, wherein the control output end of the equipment control module is respectively connected to the drum motor control end, the upper conveyor belt motor control end, and the lower conveyor belt motor control end of the withering machine, thereby controlling the start and stop operation of the drum motor of the withering machine, and according to the temperature of the tea leaves collected on the lower conveyor belt, controlling the start and stop and feeding speed of the lower conveyor belt;

[0008] The humidity control subsystem collects the humidity in the cylinder of the tea-withering machine through a humidity sensor, and controls the heating time and the opening size of the fuel control valve by comparing the change with the set humidity value;

[0009] LCD display control system: The LCD display circuit is used to display the working status of the tea-withering machine in real time, including parameters such as temperature, humidity, and time, which is convenient for operators to monitor and adjust. According to the sensor signal data and the tea-withering standard data corresponding to different types of tea, each processing component is automatically controlled and adjusted directly; the touch control screen also includes a human intervention tea-withering control interface, which is used to manually adjust the parameters of each component in the tea-withering process;

[0010] The signal terminal controller is used to collect the signals of various sensors inside the fixing machine, and integrate, analyze and judge the signal information.

[0011] Optionally, the input end of the signal terminal controller is respectively connected to a hoist speed sensor, a microwave and light wave power sensor, and an exhaust fan speed sensor;

[0012] The output end of the signal terminal controller is respectively connected with the elevator, the killing conveyor belt, the microwave and light wave components and the exhaust fan.

[0013] Optionally, the input end of the LCD display control system is also connected to a data analysis library and a tea image acquisition module.

[0014] Optionally, the data analysis library includes an original processing database, a data entry unit, a data comparison unit, and a data coverage unit;

[0015] The original processing database is used to store processing data of various types of tea leaves, and also serves as original comparison data in the current tea withering processing process. The original processing database is connected to the data entry unit and the data coverage unit respectively.

[0016] Optionally, the tea image acquisition module is used to collect and identify the state of tea leaves during the withering process, and to judge the withering state of tea leaves by comparing with the data in the original processing database, and to send control instructions to each processing component through the signal terminal controller to realize intelligent adjustment of tea withering;

[0017] Optionally, the tea image acquisition module includes an image sensor, a signal amplifier, an analog-to-digital converter, and a color signal processing unit;

[0018] An image sensor is used to collect images of the tea leaves during the withering process and convert optical signals into electrical signals;

[0019] Automatic gain signal amplifier, used to amplify the weak electrical signal output by the image sensor;

[0020] Analog-to-digital converters convert analog electrical signals into digital signals. During the image acquisition process, the signals processed by the image sensor and amplifier are analog signals. Using analog-to-digital converters, the acquired image data can be stored, processed and analyzed by digital devices.

[0021] The color signal processing unit is used to adjust the saturation and color difference of the image color information during the finishing process.

[0022] A method for the fixing of the green leaves according to any one of the above claims, comprising the following specific steps:

[0023] Step 1: Preheat the equipment. Before adding fresh leaves, the withering machine needs to be preheated. Preheat the pot temperature of the drum withering machine to 250-300℃;

[0024] Step 2: Feeding: Place the tea leaves on the elevator and use the elevator to transport the tea leaves to the conveyor belt of the withering machine. Use an inclined bucket elevator with a lifting speed of 1.5-2.5m 3 / h, specifically 1.5m 3 / h、2m 3 / h、2.5m 3 / h;

[0025] Step 3: Flattening. When the conveyor belt conveys the tea leaves to the withering box, the tea leaves are scraped and rolled by rollers to evenly spread the tea leaves on the conveyor belt. The power source of the roller adopts a servo motor. The speed of the roller is set to 40-90r / min, and a speed sensor is provided at the roller. A lifting mechanism is also provided on one side of the roller. The lifting mechanism enables the roller to have a lifting range of 0-25mm, and a displacement sensor is provided at the lifting mechanism.

[0026] Step 4: Tea leaves are put into the preheated drum to start withering. The tea leaves on the conveyor belt are heated and withered by using microwave and light wave components. During the heating and withering process, an exhaust fan is used to continuously exhaust and dehumidify the interior of the withering machine. The temperature range of the heating and withering is set to 300-350℃. A temperature control sensor electrically connected to the microwave and light wave components is provided inside the withering machine. The microwave output power is set to 15-30kw, the microwave frequency is set to 2450±50MHz; the light wave power range is set to 4-8KW;

[0027] During the withering process, the tea leaves are observed to ensure that they become soft, sticky, dark in color, fragrant, free of green odor, and have lost about 15-22% of their water content.

[0028] Step 5: Discharging: After the tea leaves are finished being withered, they are sent to the outside of the withering machine along the conveyor belt for unified collection;

[0029] Step 6: After the tea leaves are withered, take them out of the drum and cool them down quickly to prevent the residual heat from continuing to affect the quality of the tea leaves.

[0030] Step 7: Rolling: Roll the cooled tea leaves to shape them and promote the exudation of tea juice.

[0031] Step 8: Drying: The rolled tea leaves are dried to further reduce the moisture content to 10-15%;

[0032] Step nine: Finishing is completed.

[0033] The present invention provides a method for fixing the green leaves and an intelligent control system thereof, which have the following beneficial effects:

[0034] The tea-withering operation method and its intelligent control system can accurately control parameters such as temperature and humidity to ensure that the tea-withering process is carried out under appropriate conditions; at an appropriate high temperature, the enzymatic oxidation of fresh leaves can be quickly stopped, the quality of tea leaves can be fixed, and the color and flavor of tea leaves can be improved; and energy costs can be effectively reduced, and automatic control can be achieved without human intervention, thereby reducing the human investment in controlling the tea-withering machine and saving labor costs;

[0035] A complete control system is used to control each component in the withering process in real time and independently, and various variable factors affecting the withering are unified and integrated, and centrally controlled by the touch screen. According to the withering production requirements of the tea, the original processing parameters can be set for the withering machine, and during the processing process, the withering status of the tea can be collected and compared with the original data, so as to automatically adjust the operating parameters of each component in the withering machine to ensure the same withering effect of the tea. At the same time, the withering control system sets different parameters according to different types of tea, and the user can also directly and independently adjust the use parameters of the withering machine through the touch screen. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] The intelligent control system for the killing operation includes a temperature control subsystem, an automatic out-of-pot control system, a humidity control subsystem, a LCD display control system, and a signal terminal controller;

[0038] The temperature control subsystem adopts a modular design and includes a temperature measurement sensor and a signal processing module, which is used to monitor the process temperature of tea leaf withering in real time. The output signal of the temperature sensor is converted into an analog signal through a signal processing and amplification circuit and transmitted to the signal terminal controller and the LCD display control system; the LCD display control system receives the collected temperature data, displays the withering temperature in real time, and controls the subsequent execution according to the tea leaf withering temperature input by the user;

[0039] The automatic out-of-pot control system includes an equipment control module, wherein the control output end of the equipment control module is respectively connected to the drum motor control end, the upper conveyor belt motor control end, and the lower conveyor belt motor control end of the withering machine, thereby controlling the start and stop operation of the drum motor of the withering machine, and according to the temperature of the tea leaves collected on the lower conveyor belt, controlling the start and stop and feeding speed of the lower conveyor belt;

[0040] The humidity control subsystem collects the humidity in the cylinder of the tea-withering machine through a humidity sensor, and controls the heating time and the opening size of the fuel control valve by comparing the change with the set humidity value;

[0041] LCD display control system: The LCD display circuit is used to display the working status of the tea-withering machine in real time, including parameters such as temperature, humidity, and time, which is convenient for operators to monitor and adjust. According to the sensor signal data and the tea-withering standard data corresponding to different types of tea, each processing component is automatically controlled and adjusted directly; the touch control screen also includes a human intervention tea-withering control interface, which is used to manually adjust the parameters of each component in the tea-withering process;

[0042] The input end of the LCD display control system is also connected to a data analysis library and a tea image acquisition module.

[0043] The data analysis library includes the original processing database, data entry unit, data comparison unit and data coverage unit;

[0044] The original processing database is used to store processing data of various types of tea leaves, and also serves as original comparison data in the current tea withering processing process. The original processing database is connected to the data entry unit and the data coverage unit respectively.

[0045] The tea image acquisition module is used to collect and identify the state of tea leaves during the withering process, and to judge the withering state of tea leaves by comparing it with the data in the original processing database. The control instructions are sent to each processing component through the signal terminal controller to realize the intelligent adjustment of tea withering.

[0046] The tea image acquisition module includes an image sensor, a signal amplifier, an analog-to-digital converter, and a color signal processing unit;

[0047] An image sensor is used to collect images of the tea leaves during the withering process and convert optical signals into electrical signals;

[0048] Automatic gain signal amplifier, used to amplify the weak electrical signal output by the image sensor;

[0049] Analog-to-digital converters convert analog electrical signals into digital signals. During the image acquisition process, the signals processed by the image sensor and amplifier are analog signals. Using analog-to-digital converters, the acquired image data can be stored, processed and analyzed by digital devices.

[0050] A color signal processing unit, used to adjust the saturation and color difference of the image color information during the finishing process;

[0051] The signal terminal controller is used to collect the signals of various sensors inside the fixing machine, and integrate, analyze and judge the signal information;

[0052] The input end of the signal terminal controller is respectively connected with a hoist speed sensor, a microwave and light wave power sensor, and an exhaust fan speed sensor;

[0053] The output end of the signal terminal controller is respectively connected with the elevator, the killing conveyor belt, the microwave and light wave components and the exhaust fan.

[0054] Embodiment 1: Green tea withering operation method, comprising the following specific steps:

[0055] Step 1: Preheat the equipment. Before adding fresh green tea leaves, preheat the drum tea-fixing machine to 200-250℃.

[0056] Step 2: Feeding: Place the green tea on the elevator and use the elevator to transport the green tea to the conveyor belt of the withering machine. Use an inclined bucket elevator with a lifting speed of 2m. 3 / h;

[0057] Step 3: When the conveyor belt is conveying the green tea to the withering box, the green tea is scraped and rolled by the roller to spread the green tea evenly on the conveyor belt. The speed of the roller is set to 50r / min.

[0058] Step 4: Put the green tea into the preheated drum and start to heat the green tea on the conveyor belt using microwave and light wave components. The temperature range of heating and killing is set at 250-300℃;

[0059] Step 5: After the green tea is withered, it is sent to the outside of the withering machine along the conveyor belt for unified collection;

[0060] Step 6: After the green tea is withered, take the green tea out of the drum and cool it down quickly;

[0061] Step 7: Roll the cooled green tea to shape the tea and promote the exudation of tea juice;

[0062] Step 8: Drying: The rolled green tea is dried to further reduce the moisture content to 10-15%;

[0063] Step nine: Finishing is completed.

[0064] Embodiment 2: A method for fixing the green color of dark tea, comprising the following specific steps:

[0065] Step 1: Preheat the pot temperature of the drum fixing machine to 250-300℃;

[0066] Step 2: Place the dark tea on the elevator and use it to transport the dark tea to the conveyor belt of the withering machine. The lifting speed is set to 2m 3 / h;

[0067] Step 3: When the conveyor belt is conveying the dark tea to the withering box, the dark tea is scraped and rolled by rollers to spread the dark tea evenly on the conveyor belt. The speed of the rollers is set to 40-90r / min.

[0068] Step 4: Put the dark tea into the preheated drum to heat and kill the dark tea on the conveyor belt using microwave and light wave components. The temperature range of heating and killing is set to 300-350℃;

[0069] During the killing process, the state of the black tea is observed to ensure that the leaves become soft, sticky, dark in color, fragrant, without green odor, and lose about 17.5% of water.

[0070] Step 5: Discharging: After the withering, the dark tea is sent to the outside of the withering machine along the conveyor belt for unified collection;

[0071] Step 6: After the withering is completed, take the black tea out of the drum, cool it quickly, and roll the cooled black tea to shape the black tea and promote the exudation of tea juice;

[0072] Step 7: Drying: The rolled black tea is dried to further reduce the moisture content to 10-15%, and the tea is finished.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Intelligent control system for finishing operation, characterized in that: It includes temperature control subsystem, automatic pot-out control system, humidity control subsystem, LCD display control system and signal terminal controller; The temperature control subsystem adopts a modular design and includes a temperature measurement sensor and a signal processing module, which is used to monitor the process temperature of tea leaf withering in real time. The output signal of the temperature sensor is converted into an analog signal through a signal processing and amplification circuit and transmitted to the signal terminal controller and the LCD display control system; the LCD display control system receives the collected temperature data, displays the withering temperature in real time, and controls the subsequent execution according to the tea leaf withering temperature input by the user; The automatic out-of-pot control system includes an equipment control module, wherein the control output end of the equipment control module is respectively connected to the drum motor control end, the upper conveyor belt motor control end, and the lower conveyor belt motor control end of the withering machine, thereby controlling the start and stop operation of the drum motor of the withering machine, and according to the temperature of the tea leaves collected on the lower conveyor belt, controlling the start and stop and feeding speed of the lower conveyor belt; The humidity control subsystem collects the humidity in the cylinder of the tea-withering machine through a humidity sensor, and controls the heating time and the opening size of the fuel control valve by comparing the change with the set humidity value; LCD display control system: The LCD display circuit is used to display the working status of the tea-withering machine in real time, including parameters such as temperature, humidity, and time, which is convenient for operators to monitor and adjust. According to the sensor signal data and the tea-withering standard data corresponding to different types of tea, each processing component is automatically controlled and adjusted directly; the touch control screen also includes a human intervention tea-withering control interface, which is used to manually adjust the parameters of each component in the tea-withering process; The signal terminal controller is used to collect the signals of various sensors inside the killing machine, and integrate, analyze and judge the signal information.

2. The intelligent control system for the finishing operation according to claim 1 is characterized in that: The input end of the signal terminal controller is respectively connected to a hoist speed sensor, a microwave and light wave power sensor, and an exhaust fan speed sensor; The output end of the signal terminal controller is respectively connected with the elevator, the killing conveyor belt, the microwave and light wave components and the exhaust fan.

3. The intelligent control system for the finishing operation according to claim 1 is characterized in that: The input end of the LCD display control system is also connected to a data analysis library and a tea image acquisition module.

4. The intelligent control system for the finishing operation according to claim 3 is characterized in that: The data analysis library includes an original processing database, a data entry unit, a data comparison unit and a data coverage unit; The original processing database is used to store processing data of various types of tea leaves, and also serves as original comparison data in the current tea withering processing process. The original processing database is connected to the data entry unit and the data coverage unit respectively.

5. The intelligent control system for the finishing operation according to claim 3 is characterized in that: The tea image acquisition module is used to collect and identify the state of tea leaves during the withering process, and to judge the withering state of the tea leaves by comparing with the data in the original processing database. The control instructions are sent to each processing component through the signal terminal controller to realize intelligent adjustment of the tea withering.

6. The intelligent control system for the finishing operation according to claim 5 is characterized in that: The tea image acquisition module includes an image sensor, a signal amplifier, an analog-to-digital converter, and a color signal processing unit; An image sensor is used to collect images of the tea leaves during the withering process and convert optical signals into electrical signals; Automatic gain signal amplifier, used to amplify the weak electrical signal output by the image sensor; Analog-to-digital converters convert analog electrical signals into digital signals. During the image acquisition process, the signals processed by the image sensor and amplifier are analog signals. Using analog-to-digital converters, the acquired image data can be stored, processed and analyzed by digital devices. The color signal processing unit is used to adjust the saturation and color difference of the image color information during the finishing process.

7. A method for the fixing of tea leaves as claimed in any one of claims 1 to 6, characterized in that: The specific steps include: Step 1: Preheat the equipment. Before adding fresh leaves, the withering machine needs to be preheated. Preheat the pot temperature of the drum withering machine to 250-300℃; Step 2: Feeding: Place the tea leaves on the elevator and use the elevator to transport the tea leaves to the conveyor belt of the withering machine. Use an inclined bucket elevator with a lifting speed of 1.5-2.5m 3 / h, specifically 1.5m 3 / h、2m 3 / h、2.5m 3 / h; Step 3: Flattening. When the conveyor belt conveys the tea leaves to the withering box, the tea leaves are scraped and rolled by rollers to evenly spread the tea leaves on the conveyor belt. The power source of the roller adopts a servo motor. The speed of the roller is set to 40-90r / min, and a speed sensor is provided at the roller. A lifting mechanism is also provided on one side of the roller. The lifting mechanism enables the roller to have a lifting range of 0-25mm, and a displacement sensor is provided at the lifting mechanism. Step 4: Tea leaves are put into the preheated drum to start withering. The tea leaves on the conveyor belt are heated and withered by using microwave and light wave components. During the heating and withering process, an exhaust fan is used to continuously exhaust and dehumidify the interior of the withering machine. The temperature range of the heating and withering is set to 300-350℃. A temperature control sensor electrically connected to the microwave and light wave components is provided inside the withering machine. The microwave output power is set to 15-30kw, the microwave frequency is set to 2450±50MHz; the light wave power range is set to 4-8KW; During the withering process, the tea leaves are observed to ensure that they become soft, sticky, dark in color, fragrant, free of green odor, and have lost about 15-22% of their water content. Step 5: Discharging: After the tea leaves are finished being withered, they are sent to the outside of the withering machine along the conveyor belt for unified collection; Step 6: After the tea leaves are withered, take them out of the drum and cool them down quickly to prevent the residual heat from continuing to affect the quality of the tea leaves. Step 7: Rolling: Roll the cooled tea leaves to shape them and promote the exudation of tea juice. Step 8: Drying: The rolled tea leaves are dried to further reduce the moisture content to 10-15%; Step nine: Finishing is completed.