SCADA PROJECT Rice drying and weiling-packing GROUP 03 ADVISOR: Dr. VÕ HỮU HẬU
GROUP MEMBER Nguyễn Hoàng Anh Nguyễn Minh Tiến Hoàng Anh Tuấn Hà Tiến Đạt
SCADA PROJECT Table of contents Introduction Hardware and program Design scada Simulation
Introduction 4 01
Determine of drying Seeds and agricultural products, before being stored in warehouses, must have a safe moisture level. The suitable moisture condition for seed preservation is within the range of 12%-14%. Most harvested seeds have higher moisture content, especially during seasons with high atmospheric humidity due to frequent rainfall, causing a slow natural evaporation of water from the seeds Wet seeds negatively impact the milling process. The powder output decreases, energy costs rise, and the powder adheres to processing machinery, leading to rapid machine deterioration. The seeds that undergo self-heating initially, thanks to the drying process, return to normal. The self-heating process stops, and the technical properties of the seeds are restored. If the seeds are still fresh and have not completed the physiological ripening process, drying helps shorten this process, allowing the seeds to acquire their appropriate technical characteristics. The seeds that undergo self-heating initially, thanks to the drying process, return to normal. The self-heating process stops, and the technical properties of the seeds are restored. If the seeds are still fresh and have not completed the physiological ripening process, drying helps shorten this process, allowing the seeds to acquire their appropriate technical characteristics. Introduction
Characteristic nature of the drying process Drying is a process of removing moisture from a product (or converting water in the product into vapor). This process is carried out due to the pressure difference of water vapor in the surrounding environment ( Pxq ) and on the surface of the product ( Psp ). The increase in moisture evaporation on the surface occurs when the temperature and velocity of the air stream increase, relative humidity decreases, and air pressure decreases. Therefore, surface moisture evaporation leads to internal diffusion. This is a result of breaking the relative equilibrium within the product and is also influenced by temperature changes and uneven water distribution within the product. The drying process can be accelerated by increasing the air temperature or the temperature of the air and furnace smoke mixture, reducing the relative humidity of the air (φ), increasing air velocity (v), and reducing air pressure in the environment (B). In the drying process, the later the water vapor in the surrounding environment, the more, meaning that the pressure Pxq increases and the moisture content of the product decreases until reaching a certain point where equilibrium is achieved. Introduction
About the drying rice system Introduction Full system diagram
About the drying rice system Introduction Manual mode diagram
About the drying rice system Introduction Auto mode diagram
Hardware and program 11 02
Device configuration The PLC S7-1516 PN/DP is connected to the PC Station via PROFINET connection. Add Wincc RT Advanced to design HMI interfaces and simulate systems of PLC programming
PLC input tags
PLC output tags
PLC temporary tags
PLC temporary tags
PLC temporary tags
PLC temporary tags
PLC temporary tags
Main program
Main program
Start up program
Start up program
Start up program
Analog function program
Analog function program
Auto function program
Auto function program
Auto function program
Auto function program
Auto function program
Manual function program
Manual function program
Manual function program
Manual function program
Output function program
Output function program
Output function program
Output function program
Sensor_input function program
Sensor_input function program
Sensor_input function program
Simulation function program
Simulation function program
Simulation function program
Simulation function program
Simulation function program
Simulation function program
Simulation function program
Simulation function program
Desgin SCADA 51 03
To design a SCADA system, you have to add the new screen in PC-system -> HMI_RT -> Screens -> Add new screen
Screen display when you add new screen.
Change the screen background color: Properties -> General -> Background color -> Choose white color
To add a shape: Basic objects -> Retangle To change the shape color: Appearance -> Background -> Color
To add elements: Elements -> Symbol library To change element: General -> Choose the element you want
To add text: Basic objects -> Text field To change text: Double click and type the text or General -> Text -> Type the content
To add switch: Elements -> Switch To add tag: General -> Add tag at “Tag” To label name: General -> Label -> Change Title and On, Off
To add button: Elements -> Button To add events: Properties -> Events -> Press -> Setbit -> Add the tag Properties -> Events -> Press -> Resetbit -> Add the tag
To add I/O field: Elements -> I/O field To add tag: General -> Tag -> Add the tag
To change appearance: Properties -> Animations -> Display -> Appearance -> Tag
Simulation 63 04
Click the Simulation button to run PLC SIM
Click the “Load” button to load the PLC program
Click “Start module” then click “Finish”
Enter a certain program block that you want to monitor, press the glasses icon to online the PLC program
Go to the main interface design screen and press the “RT” button.
Monitor the program on the Wincc
Simulate the Manual mode. We have to run the conveyors, motors, devices manually by the switch
To simulate the Auto mode, we have to change the mode to Auto, turn on Simulation and press Run button. Firstly, the Conveyor 1 will run to transfer the rice to the tank and the combustion chamber work to increase the temperature
When the tank height is 90m and the temperature of heat device is enough (56 o C), it start to transfer the heat to the tank and the motor of the tank will stir to decrease the humidity of rice.
After the humidity of rice reduced and the sensor detect the pack, the valve will open and the 3 rd conveyor will move the dried rice to the pack.
When the pack is 30kg weight, the valve will close and the 3 rd conveyor stop. The packing conveyor will move the pack to packing machine. There are 2 sensors ( pack in and pack out ) to know if the pack machine finish or not.