CN-121979134-A - Intelligent and precise whole-course regulation and control system and method for tea withering

Abstract

The invention relates to a full-process intelligent and accurate regulation and control system and a method for tea withering, the full-process intelligent and accurate regulation and control system for tea withering comprises a withering unit, and is characterized in that, the device also comprises a central control unit, a weight monitoring unit arranged on the withering unit, and a humidity monitoring unit, a temperature monitoring unit and a wind speed monitoring unit which are arranged according to the requirement. By adopting the system, fresh leaf weight data are continuously collected in real time, the total water loss amount at each stage is accurately calculated by combining the initial weight, the water loss trend is prejudged in advance, parameters such as temperature and humidity, air quantity and the like are actively adjusted, parameters such as temperature and humidity, air quantity, material turning frequency and leaf spreading thickness are integrated, a multidimensional cooperative regulation and control system is constructed, the influence of internal and external fluctuation is counteracted, the lamination process requirement in the withering process is ensured, and the stable quality is ensured.

Inventors

• ZHANG YAN
• LI JIANHUA
• XIAO JINGZHOU
• Hao Kaiyin
• WANG WU
• ZHANG JINGLIN
• ZHOU JIANG
• QIU ANDONG
• YUAN YANWEN
• Chen hujiang

Assignees

• 湖北采花茶业有限公司
• 安琪酵母股份有限公司

Dates

Publication Date

20260505

Application Date

20251230

Priority Date

20251031

Claims (16)

1. 1. The utility model provides a tealeaves whole intelligent accurate regulation and control system that withers, its includes withering unit, its characterized in that, it still includes central control unit and sets up weight monitoring unit on withering unit to and humidity monitoring unit, temperature monitoring unit and the wind speed monitoring unit that sets up as required.
2. 2. The intelligent and accurate whole-process tea withering regulation and control system according to claim 1, wherein the weight monitoring unit adopts weighing sensors arranged at four corners, and the weight monitoring unit integrally lifts the device for feeding tea in the withering unit.
3. 3. The intelligent and accurate whole-process tea withering regulation system according to claim 1 or 2, wherein the humidity monitoring unit comprises an environmental humidity sensor and a withering humidity sensor, and respectively collects environmental humidity and withering humidity data; And/or the temperature monitoring unit comprises an ambient temperature sensor and a withering temperature sensor, and respectively collects ambient temperature and withering temperature data.
4. 4. A tea leaf withering whole-process intelligent precision control system according to any one of claims 1-3, wherein the precision control system comprises a feed conveyor 2.
5. 5. A tea leaf withering whole-process intelligent and precise control system according to any one of claims 1-4, wherein a wind speed monitoring unit is used for collecting wind speed data of a temperature control fan in the withering unit.
6. 6. A full-process intelligent and precise tea leaf withering control system according to any one of claims 1 to 5, wherein the withering units are provided with a plurality of groups, each group being independent of and parallel to the other, each withering unit comprising a withering apparatus, preferably comprising a light-assisted withering device arranged above the withering apparatus.
7. 7. The intelligent and precise whole-course tea leaf withering regulation and control system according to any one of claims 1-6, wherein the withering unit comprises a bidirectional belt conveyor, a feed back unit and a discharge unit, preferably the feed back unit comprises a lifting belt conveyor 7, and more preferably a water supplementing unit is arranged on the lifting belt conveyor.
8. 8. A full-process intelligent and precise tea leaf withering control system according to any one of claims 1 to 7, wherein the withering unit comprises a mobile feeding device and a distributing device 8.
9. 9. An intelligent and precise tea leaf withering whole-process control system according to any one of claims 1-8, wherein a control model is built in the central control unit and is used for determining the increase or decrease of temperature, wind speed and/or humidity according to the water loss rate in the tea leaf withering process, the temperature data of the temperature monitoring unit, the wind speed data of the wind speed detecting unit and the humidity data of the humidity monitoring unit.
10. 10. A method for precisely controlling tea leaf withering by using the intelligent and precise tea leaf withering whole-course regulating and controlling system as claimed in any one of claims 1 to 9, comprising the following steps: (1) Inputting the ambient temperature, the ambient humidity, the wind speed and the detected fresh tea water content MR Fresh food into a central control unit; (2) Inputting withering total duration T Total (S) and target water content MR Order of (A) of the withered tea leaves into a central control unit; (3) Detecting the total weight W Initially, the method comprises of the fresh tea leaves to be withered by using a weight monitoring unit, and feeding back to a central control unit; (4) The central control unit generates ideal water loss rate ZR according to MR Fresh food 、MR Order of (A) 、W Initially, the method comprises and T Total (S) ; (5) At any time t after the onset of withering, the weight monitoring unit detects the total weight W t of the withered tea leaves and feeds back to the central control unit, and (6) The central control unit automatically calculates the actual water loss rate LR under the condition of t time, compares the actual water loss rate LR with ZR, and adjusts any one or two or three parameters of the temperature, the wind speed and the humidity of the temperature control fan in the withering unit according to the comparison result.
11. 11. The method of precise control according to claim 10, wherein in step (5), t is an integer multiple of 3-8 minutes, i.e., t= (3-8 minutes) n, n is a positive integer of 10, preferably t is an integer multiple of 5 minutes, i.e., t = 5 minutes n, n is a positive integer.
12. 12. The method of precise control of claim 11 wherein the total withering time period T total is divided into m-1 nodes, and at (1/m) T total 、(2/m)T total 、(3/m)T total 、 …… ((m-1)/m)T total , the withering apparatus is unloaded onto a bi-directional belt conveyor, and transported by a lifting belt conveyor to a feed unit for re-feeding to a withering unit, re-tumbling fresh leaves and spreading.
13. 13. The method of precision control according to claim 12, wherein m is 4-6 and/or T total is 11-14 hours, preferably m is 4, or preferably T total is 12 hours.
14. 14. The method of precise control according to any one of claims 9-13, wherein in step (6), if LR is less than ZR, the temperature and/or wind speed of the temperature-controlled fan is increased and the light-assisted withering device is started, if LR is greater than ZR, the temperature and/or wind speed of the temperature-controlled fan is decreased, and if necessary, the water replenishing unit is started or the humidity is increased at the time of feeding back.
15. 15. The method of precise control according to any one of claims 9 to 14, wherein in step (6), a regulation model built in the central control unit queries a preset regulation table according to the deviation value delta (%) of LR and ZR to determine the increase or decrease of temperature, wind speed and humidity.
16. 16. The method of precise control of any one of claims 9-15, wherein when delta >5%, the temperature is reduced by 2 ℃, the wind speed is reduced by 15%, the humidity is increased by 10%, and when delta < "5%, the temperature is increased by 2 ℃, the wind speed is increased by 15%, and the humidity is reduced by 5%.

Description

Intelligent and precise whole-course regulation and control system and method for tea withering Technical Field The invention belongs to the technical field of tea processing, and particularly relates to an intelligent and precise regulation and control system and method for the whole process of tea withering. Background The withering procedure is a core front-end link in the tea processing procedure and is used for converting fresh leaves from a green state to a processable state. The procedure not only directly determines the aroma level and the taste mellow thickness of the tea finished product, but also deeply influences the development efficiency and the final effect of the subsequent procedures of rolling, fermenting, drying and the like, so that the withering quality directly determines the upper limit of the tea quality, and is an indispensable key procedure in tea processing. CN119257168a discloses a ritten red intelligent withering machine and a digital withering method thereof, comprising a withering tank body, a heat pump unit, a hot air unit, a vibration leaf turning mechanism, an adjustable dip angle conveying mechanism, an on-line water content detecting device and a main control system. The main control system is used for judging the difference degree of the water content of the tea in the areas corresponding to the photos shot by different cameras, and judging the difference degree of the water content of the tea in the areas corresponding to the photos and the total average water content calculated based on the weight measured by the weight sensor. The intelligent Lichuan red wither disclosed in the patent application has a complex structure and is divided into an upper layer and a lower layer, the digital wither method disclosed in the patent application has excessive acquisition parameters, and the regulation and control mode is only to vibrate by an inclination angle conveying mechanism and an excitation motor, so that the regulation and control cannot be accurately regulated and controlled. CN117705757a discloses a dynamic monitoring system for black tea withering degree, the withering platform lays black tea to be withered and provides withering environment, data of black tea in the process of collecting data by the data collecting unit are processed by the data processing unit, a withering model based on water loss rate, withered leaf moisture content and withering time is established, and the control unit carries out withering state tracking and adjusts the withering platform based on the withering model. The monitoring system also has the defect that the acquisition parameters are too much, and the regulation and control are only carried out by turning tea leaves up and down, so that the accurate regulation and control of the withering process cannot be realized. Disclosure of Invention The technical problem to be solved by the invention is that the prior art lacks a tea withering system which dynamically adjusts technological parameters according to the real-time state of fresh leaves and can not realize multi-parameter collaborative accurate regulation. The invention provides an intelligent and accurate regulation system and method for the whole process of tea leaf withering, which are used for collecting weight data of fresh leaves in real time and continuously, tracking a dynamic change curve of the weight data in real time based on the weight change of the fresh leaves in the withering process, combining fresh She Chushi weight, accurately calculating the total water loss amount at different stages, further reversely deducing and controlling the real-time change condition of the water content of the fresh leaves, calculating the water loss rate of the fresh leaves in unit time in real time by the system, dynamically comparing the real-time data with a preset standard water loss rate curve, avoiding the occurrence of obvious deviation of the water loss rate, pre-judging the subsequent water loss trend in advance according to the rate difference, actively regulating key parameters such as temperature, humidity, air quantity and the like, integrating a plurality of key technological parameters such as temperature, humidity, air quantity, material turning frequency, leaf spreading thickness and the like, constructing a multi-dimensional collaborative regulation system, and effectively counteracting the fluctuation influence of external environment and the self-condition of the fresh leaves through multi-parameter collaborative linkage, ensuring the accurate fitting preset processing technological requirements of the whole withering process and ensuring the stability of the quality of the withering of the fresh leaves. In a first aspect, the invention provides an intelligent and accurate regulation and control system for the whole tea withering process, which comprises a withering unit and is characterized by further comprising a central control unit, a weight monitoring unit arran