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Energy crisis is the most important issue in today's world. Conventional energy resources are not only limited but also the prime culprit for environmental pollution. Renewable energy resources are getting priorities in the whole world to lessen the dependency on conventional resources. Solar energy is rapidly gaining the focus as an important means of expanding renewable energy uses. Solar cells...
This paper proposes a microcontroller based control method for the maximum power point tracking (MPPT) of a photovoltaic system under variable temperature and insolation conditions. For the reduction of tracking time, fuzzy logic control algorithm is implemented with the embedded microcontroller for improved performance as compared to conventional techniques in power efficiency and swift maximum power...
In photovoltaic (PV) systems, the PV array represents about 57% of the total cost of the system, so it is very desirable to operate the PV panel at the maximum power point (MPP). The output characteristics of the solar array are nonlinear and vitally affected by solar radiation, temperature, and load conditions. In this respect simulation analysis of PV array is essential to understand the output...
This paper presents microcontroller based schematic circuit design of a complete duobinary encoder (duobinary code from binary bit) and duobinary decoder (binary from duobinary code) for data communication system. Binary code having two levels of bit sequence 1 and 0. On the other side Duobinary (DB) is a three-level code having 1, 0 and -1 levels. Using duobinary transmission instead of binary transmission,...
This paper presents a design and hardware implementation of a digital control section for chipless RFID tag readers. As the processing device a mid range microcontroller has been used. The control section is designed with a UWB chipless tag reader operating in the frequency range of 4.0 - 6.0 GHz. The designed digital controller has the capability of using with tags having a different number of bits...
Most commercially available image sensors send image data at high speed and pixel values can only be accessed sequentially. Random access of pixels is not possible because pixel values are sent row-after-row. On the other hand, commercial microcontrollers run at slower speed compared to the high data-rate of the image sensors and many embedded system applications need random access of pixel values...
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