CN-121996003-A - Tealeaves intelligent storage temperature and humidity atmosphere is regulation and control system in coordination

CN121996003ACN 121996003 ACN121996003 ACN 121996003ACN-121996003-A

Abstract

The invention discloses an intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system, which relates to the technical field of tea storage control and comprises a door zone, a cold bridge zone, a return air path zone and a stack, wherein sampling ports are arranged in the door zone, the cold bridge zone, the return air path zone and the stack, an air pump and a multi-way valve group are used for polling and sending samples to a centralized dew point measuring unit to obtain a dew point temperature sequence, a door zone disturbance event mark is generated by combining door magnetism with door opening time, the dew point temperature and key surface temperature are compared to obtain a dew point margin, a high risk node library is formed and classified according to a hysteresis rule, an attached dry wind flushing, a pulse penetrating circulation and door zone compensation are performed on a target node according to the node library, the execution of variable step length is limited, the dew point is recovered, the stability window is returned, the event and the treatment action sequence are met, and strategy parameters are updated, so that the dew point positioning and the node treatment are realized, excessive dehumidification is reduced, and the operation and the maintenance are consistent.

Inventors

XIA RUI
CHEN LEI
PU YANWEI
ZHANG JIANWEI
CHEN JING
WANG LANGLANG

Assignees

云南省农业科学院茶叶研究所

Dates

Publication Date: 20260508
Application Date: 20260309

Claims (10)

1. A tea intelligent storage temperature and humidity atmosphere cooperative regulation and control system is implemented by adopting dehumidification equipment, and is characterized in that: sampling ports are arranged in a warehouse door zone, a cold bridge zone and a stack, an air pump and a multi-way valve bank are polled periodically, air samples are sequentially sent into a centralized dew point measuring unit to obtain a dew point temperature sequence, and door magnetism is collected to generate a door zone disturbance event mark; comparing the dew point temperature sequence with the key surface temperature to obtain a dew point margin, and generating and grading a high risk node library according to the dew point margin and a hysteresis rule; When the high risk node library triggers a disposal condition, performing directional dewing action combination on a target node according to the classification, wherein the directional dewing action combination comprises low dew point dry wind branch road to dry wind flushing attached to the surface of a cold bridge, pulse penetrating circulation on the nodes in the stack, and performing a gate area compensation process when a gate area disturbance event mark is triggered; Continuously extracting dew point temperature, recalculating dew margin, exiting the directional dew elimination action combination according to a fade-back strategy when the exit condition is met, recording event and treatment action sequences, and updating strategy parameters of a high-risk node library.
2. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 1, wherein: The sampling ports are distributed according to the gate area, the corner cold bridge area, the return air path area and the representative point area inside the stack in a partitioning mode, node numbers are given, the multi-way valve group polls each node number according to a preset period, the air pump performs purging and delay sampling before node switching, and a sampling effective mark is generated to correspond to a dew point temperature sequence.
3. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 2, wherein: The door zone disturbance event mark is generated by a door magnetic state, a door opening time length and a dew point temperature sequence of a door zone node number, the controller calculates the door zone change intensity for the dew point temperature difference value of the adjacent polling period, and the door zone disturbance event mark is set when the door magnetic is opened and the door zone change intensity exceeds a threshold value and lasts for the minimum time of the door opening time length.
4. A tea intelligent storage temperature and humidity atmosphere cooperative regulation and control system according to claim 3, wherein: the key surface temperature is collected by anchor point temperature measuring points arranged at corners, stand columns and the ground, and a node mapping table is established, wherein the node mapping table comprises a node number, an anchor point number, mapping weights and an updating time stamp, the mapping weights are determined according to the distances between the nodes and the anchor points, and the key surface temperature is estimated and updated according to the thermal response of a wall body when the anchor points are lack of the anchor points.
5. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 4, wherein: generating a risk score according to the dew margin and executing a hysteresis rule, wherein the risk score is obtained based on accumulation of time attenuation of the dew margin lower than the safety margin; And the warehousing is judged by adopting the combination of a warehousing threshold value and the minimum duration time, the ex-warehouse is judged by adopting the combination of a stable window which is lower than the ex-warehouse threshold value and continuously meets the sampling effective mark, and the node grade is kept not to rebound between the warehousing and the ex-warehouse.
6. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 5, wherein: The high risk node library classifies and sorts the warehousing nodes into a first stage, a second stage and a third stage, records grade fields respectively, the grade is comprehensively determined according to the deterioration trend, the recovery speed and the repeated triggering times of the dew margin, the sorting result is output as a target node list and a treatment priority, and the target node list is used as the selection input of the directional dew elimination action combination.
7. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 6, wherein: The low dew point main air branch route is composed of a main air source, a branch air duct, an electric branch valve and an attached air outlet component, wherein the attached air outlet component is fixed at a position corresponding to the key surface temperature of a cold bridge area facing a corner, the controller starts the electric branch valve one by one according to a target node list, maintains preset flushing time length, and records the start-stop sequence of the branch and writes in a treatment action sequence.
8. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 7, wherein: the pulse penetrating circulation is executed on the corresponding node of the representative point inside the stack, the controller alternately switches the gear position of the penetrating fan and the valve position of the return air path according to a preset pulse period, and polls the sampling port of the representative point inside the stack again after each switch to update the dew point temperature sequence, and simultaneously writes the pulse period and the valve position switching sequence into the treatment action sequence.
9. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 8, wherein: The door zone compensation process is executed during the setting of the door zone disturbance event mark, the controller opens the door zone to preset dry air buffer and adjusts the return air guide member to enable the door zone airflow to enter the return air path zone, meanwhile, the variable step upper limit is set for the execution amount of the dehumidifying equipment, the branch valve position and the fan gear, and the door zone disturbance event mark is released after the door magnet is changed from opening to closing, the preset time delay dehumidifying process is continuously executed.
10. The intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system according to claim 9, wherein: The exit condition comprises that the dewing margin of all target nodes in the high risk node library continuously meets the safety margin, the sampling effective mark is continuously effective, the fade-back strategy is gradually exited according to the sequence of low dew point dry wind branch, pulse penetration circulation and normal dehumidification, the interlocking of the gate area disturbance event mark is kept effective in the exit process, and after the interlocking is released, the event and the treatment action sequence are associated and archived, and the strategy parameter version number is updated.

Description

Tealeaves intelligent storage temperature and humidity atmosphere is regulation and control system in coordination Technical Field The invention relates to the technical field of tea storage control, in particular to an intelligent tea storage temperature and humidity atmosphere cooperative regulation and control system. Background In the process of storage, turnover and long-term storage of tea leaves, the tea leaves are sensitive to environmental temperature and humidity conditions and airflow tissues, the tea leaves are generally piled into a warehouse in bags, boxes or trays, a warehouse is usually ventilated, dehumidified, fresh air or a circulating fan, and a temperature and humidity sensor is arranged for constant temperature and humidity or time-sharing control so as to adapt to the requirements of different fresh keeping and stable quality. Along with the improvement of storage scale and operation frequency, the storehouse often has the disturbances such as door area loading and unloading opening and closing, fork truck passing, personnel entering and exiting, and when the temperature difference is great in plum rainy season, return to the south or round the clock, the outside air moisture content is high and changes fast, is influenced by factors such as envelope conduction difference, stand and metal components, ground back cooling, wind channel and return air path, and the like, cold bridge or air current dead angle with lower temperature appears locally, and the inside of the stack and the near stratum can produce steam detention and humidity gradient because of ventilation penetration deficiency, and the inside of the storehouse is wholly controllable, local microenvironment deviates. Under the above conditions, when the hot and humid air enters the door opening and back filling or the circulation mixing, or the water vapor in the stack enters the boundary layer with lower temperature, the temperature is lower than the critical temperature of the saturation of the water vapor of the air, the condensation process may occur, and the condensation process generally firstly occurs in hidden places such as corners, gate area back flow channels, tray bottoms, the stack interiors and the like, and is not easy to find. The current common control method is that the relative humidity and temperature threshold value is controlled and alarmed, the sensors are distributed near the representative position or the wall surface in the warehouse, the controller can start and stop the dehumidification or temperature adjustment equipment, and measures such as regular inspection, stack turning and ventilation are adopted. However, the relative humidity is greatly affected by temperature, the saturation critical temperature of air vapor cannot be directly reacted, the surface temperature of the local cold bridge and the gas state in the stack often lack continuous coverage, and the condensation critical window is not easy to be found in time and is included in the control basis. Therefore, the technical problems that the existing tea storage environment regulation needs to pay attention to are that due to non-uniform microenvironments caused by door area operation disturbance, cold bridge, stack internal stagnation and the like, when a condensation critical state is found, the parts are hidden and continuously exist, the whole temperature and humidity index does not accord with the regulation, and under the condition that the tea is not recognized in time, the tea is affected with damp, mildewed, peculiar smell and batch difference are caused, so that the problems of scrapping or degraded sales, rising cost of a customer prosecute and the like are caused. Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention provides an intelligent tea storage temperature and humidity atmosphere collaborative regulation system, which is characterized in that a door zone disturbance event mark is generated by combining door magnetism and door opening time, dew point temperature and key surface temperature are compared to obtain dew point margin, a high risk node library is formed and classified according to a hysteresis rule, an attached dry wind flushing, pulse penetrating circulation and door zone compensation are performed on a target node according to the node library, an execution variable change step length is limited, the dew point is extracted again, the dew point margin is calculated again, the stability window is met, the back-off of the stability window is withdrawn, an event and treatment action sequence is recorded, and strategy parameters are updated, so that the dew point risk positioning and node treatment are realized, and the technical problems recorded in the background technology are solved. (II) technical scheme In order to achieve the above purpose, the invention is realized by the following technical scheme: a coordinated regulation and control system