04-04-2015, 04:11 PM
hi i like to have full detail about the system of PIC Based Automatic Solar Radiation Tracker system so was to access the imformation
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automatic sun tracking system ppt with base paper
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hi i like to have full detail about the system of PIC Based Automatic Solar Radiation Tracker system so was to access the imformation
23-03-2017, 04:38 PM
In remote areas the sun is a cheap source of electricity because instead of hydraulic generators it uses solar cells to produce electricity. While the output of solar cells depends on the intensity of sunlight and the angle of incidence. It means getting maximum efficiency; Solar panels1 should remain in front of the sun throughout the day. But because of the rotation of the earth these panels can not maintain their position always in front of the sun. This problem results in a decrease in efficiency. Therefore, to get a constant output, you require an automated system that must be able to constantly rotate the solar panel. The Automatic Sun Tracking System (ASTS) was performed as a prototype to solve the problem, mentioned above. It is fully automatic and holds the panel in front of the sun until it is visible. The unique feature of this system is that instead of taking the land as your reference, take the sun as a guide source. Its active sensors constantly monitor the sunlight and turn the panel towards the direction where the intensity of sunlight is maximum. In case the sun becomes invisible, p. In cloudy weather, then without tracking the sun the ASTS keeps turning the solar panel in the opposite direction to the rotation of the earth. But its rotation speed is the same as that of the rotation of the earth2.
Due to this property when after some time, p. Half an hour when the sun is visible again, the solar panel is right in front of the sun. In addition, the system can handle errors and also provides error messages on the LCD. In manual mode, through the software (GUI) in the computer, the solar panel can be turned at any desired angle.
![[Image: Automatic%20Sun%20Tracking.jpg]](http://www.seminarsonly.com/electronics/Automatic%20Sun%20Tracking.jpg){kind=tracking}
ASTS can be used for Parabolic Trough tracker, dish trackers, PV (photovoltaic generator) tracker, heliostat, solar oven and so on. Although the control system theory is similar to all applications, there are some differences: the precision requirement for the dish tracker is stricter than the PV tracker, whereas the heliostat and solar oven need the precision requirement more Strict and more difficult to apply Solar sensor to make a closed loop control system. Therefore, when designing these systems, the selection of motor type, controller type and tracking mode should be different.
ASTS is a hybrid hardware / software project. Its general structural diagram is shown in figure-3.
The software includes:
• GUI based on VB 6.0.
Microsoft Access database.
• Embedded software (written in C) for the AT89c52 microcontroller.
Hardware includes:
• Solar panel mounting structure containing six functional sensors, stepper motor and solar cells.
• System control unit containing LCD, keypad, error indicators and emergency stop switch.
• Complete PCB containing two microcontrollers (89c52). The first is the "Master Microcontroller" that controls the automatic operation of ASTS.
While the second, the "Slave Microcontroller" communicates in series (RS232) with the software VB in the computer.
![[Image: Automatic%20Sun%20Tracking%201.jpg]](http://www.seminarsonly.com/electronics/Automatic%20Sun%20Tracking%201.jpg){kind=tracking}
In remote areas the sun is a cheap source of electricity because instead of hydraulic generators it uses solar cells to produce electricity. While the output of solar cells depends on the intensity of sunlight and the angle of incidence. It means getting maximum efficiency; Solar panels1 should remain in front of the sun throughout the day. But because of the rotation of the earth these panels can not maintain their position always in front of the sun. This problem results in a decrease in efficiency. Therefore, to get a constant output, you require an automated system that must be able to constantly rotate the solar panel.
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