Buy fruits and vegetables preservation+ Best Price
The storage period of fresh fruits and vegetables can be prolonged based on scientific and reasonable storage type and preservation technology. The use of new PLC control equipment for fruit and vegetable management can achieve the following objectives.
fruits and vegetables preservation methods
Let's increase the consumption of fruits and vegetables in our country and develop the surface of care and technology of foreign countries.
To use it according to the national conditions of our country and create an advanced print storage control system.
Additional challenges include high cost, inadequate equipment management, and insufficient supporting technology.
Creating a printed warehouse suitable for fruit and vegetable varieties and environmental control in our country will not only save costs, but also provide technology to support personnel training, technical and equipment maintenance, and research and analysis.
Kahsh from losing fruits and vegetables.
Fruits and vegetables smell good in the language of care, and cherries, ginger, garlic and garlic are almost fresh in terms of weight, color, nutrition, firmness, appearance, taste, flavor and aroma kind.
Language increases caution.
For example, PID technology regulates temperature parameters, and PID technology regulates oxygen flow parameters.
Tongue retention time is significantly increased, and the average tongue retention is increased by 1.
5 ~ 2 times.
The program can be easily modified.
PLC technology was used in the design of a storage control system for printed fruits and vegetables.
A joint application of energy and space storage costs has been published.
Due to the increased electrical consumption of the exhaust and nitrogen generator, the printed reservoir used two frequency variables, one to control the exhaust frequency of the engine speed and the other to control the frequency of the nitrogen generator.
Energy consumption activities change state design control flow for cooling and nitrogen generators for printed reservoir management.
Published in this article, a new air conditioning control system is developed and studied, PLC technology, frequency conversion technology, memory technology, PID technology, and observation technology to integrate variables to adjust parameters and store large amounts of data are developed.
Gas composition, intelligent humidity, energy consumption, energy consumption control, and finally, fruit and vegetable language, fruit and vegetable monitoring device operation and energy consumption target results.
From this moment on, joint expenditure activities are carried out in the field of energy consumption, storage area, organization of small and heavy crops, support of fruit and vegetable production, economic and social benefits, in cooperation with domestic enterprises, and development of fruits and vegetables.
cherry, ginger, garlic and other vegetables.
fruits and vegetables preservation important questions
Based on the theory of the most commonly used methods of fruit and vegetable care, published by Anbar.
On the basis of cold air storage, gas composition, temperature regulation, oxygen evaporation, carbon dioxide evaporation, ethylene evaporation, moisture and other factors are regulated in the atmosphere, and fruits and vegetables can breathe.
This can improve their metabolism, increase longevity, and better preserve the freshness and quality of fruits and vegetables.
Wind-printed storage can increase storage space by 2-3 times compared to cold air storage.
Pressurized storage releases oxygen and particulates into atmospheric storage, weather, and humidity to preserve fruits and vegetables in accordance with normal biological processes.
System Control Scheme
The air conditioning storage control system is a collection system of temperature sensor, oxygen sensor, carbon dioxide sensor, ethylene sensor, humidity sensor and other information acquisition system, test the temperature, humidity, gas composition and other environmental parameters in the storage.
Through the control equipment to the refrigeration unit, electric heater, nitrogen machine, carbon dioxide removal machine, ethylene removal machine and humidifier and other executive agencies to control, adjust the environment in the air conditioning storage, to achieve the requirements of fresh fruits and vegetables.
The system using PLC as the controller to automatic control of actuator.
The inverter control refrigerating machine and nitrogen making machine are designed, energy saving control is realized.
The monitoring system of the upper computer using MCSG configuration software and communicates with PLC to display and record the data for real-time monitoring.
In order to improve the reliability of the system, automatic control mode and manual control mode are designed.
Manual control mode.
fruits and vegetables preservation important questions and answers
Manual control mode is characterized by simple and reliable, composed of buttons, contactors and other electrical components.
Automatic control mode.
Realize automatic control through PLC, use various sensors to detect the environment in the air conditioning storage, and set the upper limit and lower limit, beyond the set value will send out control signals to drive the actuator and inverter to open and close, in order to achieve the purpose of automatic control.
Its characteristic is to save manpower, reduce operation cost, realize energy-saving reduce consumption.
Hardware design of the system.
The hardware design of the system includes the selection and configuration of PLC, the design of information acquisition system, the design of actuator system and the design of inverter control system.
Manual/automatic switching mode is adopted for flexible and convenient control.
By communicating with the upper computer, the real-time monitoring function is realized.
System Technical Indicators According to the above analysis results, temperature, oxygen concentration, carbon dioxide concentration, ethylene concentration and relative humidity are the key parameters for storage and freshness preservation in the air conditioning storage.
Taking ginger storage as an example and combining the design requirements of the project, the technical indicators to be achieved in this system are determined.
Realized real-time control and stabilized the environment system of the air conditioning storage.
The temperature, oxygen concentration, carbon dioxide concentration, ethylene concentration and humidity are automatically detected and transmitted to PLC by various sensors.
Through PLC processing and operation, output control signal to control the refrigerator, electric heater, nitrogen machine, carbon dioxide removal machine, ethylene removal machine and humidifier operation.
The environment system of fruit and vegetable air conditioning storage is a time-varying, nonlinear and lagging system.
Therefore, a design scheme based on parameter self-tuning PID technology to control temperature and oxygen concentration is established, and through the simulation software to carry on the simulation, the optimal control of temperature and oxygen concentration of the air conditioning storage was realized.
How useful is this article to you?
Average Score
5
/
Number of votes:
1
