Model Development

A digital frequency meter is a general purpose basic digital counter used for measuring, setting, monitoring frequencies for counting random events. It is also used for industrial counting applications such as Test, adjustment and calibration of oscillators etc. In this project, a digital frequency meter was designed and fabricated by using PIC 16F676. The output of frequency meter is displayed using 7- segment LED display modules. The input signal is converted to pulses using an opamp and the pulses are counted using microcontroller and equivalent decimal value is displayed.

Project Members: LIKHITHA, K. USHASREE

Guide: Dr. N. Vamsi Krishna

In case if the phase sequence of the grid supply (APSPDCL) is changed, the regulatory action of automatic tap changer becomes supportive/ problematic. If the phase sequence of incoming line is changed due to maintenance then the direction of rotation of motor is opposite to desired direction so that the voltage across load will not be a rated voltage.  So, an attempt is made in this project to design a circuit to identify and correct the phase sequence .Due to this, the induction motor rotates in correct direction in order to get the rated voltage across the load. Even though it is being used for transformer but it ca also be used for other appliances for phase sequence correction.

Project Members: DHARMA LINGESWAR, RAMESH, T.SAI PRIYANKA

Guide: Dr.P.V.R.L. NARASIMHAM, Mr. A. HARI PRASAD

Solar module characterization under real operating conditions. Plots I-V characteristics of the solar cell by using ardunio and the I-V plots are plotted by using MegunoLink software.

Project Members: M V Rajesh

Guide: Dr. M. Siva Rama Krishna

In power electronics circuits different power switching devices are using to convert power. The mostly using switching devices are SCR, MOSFETs and IGBTs, to operate switching device a gate signal must be applied across the gate and the source terminals. Output voltage of the controlling circuit is not high enough to trigger switching devices. In order to amplify output voltage of the controlling circuit amplifier circuits are used. Different switching devices need different voltage levels. In this project we developed a one Gate firing circuit to drive the switching devices. The same circuit is useful to drive for different rating of gate voltages of different switching devices.

Project Members : Sri. R Madhusudhana Rao

Now a day to organize a seminar at least 1 or 2 technicians are required for to turn ON/OFF/adjust the equipment in the hall and to change the slides. But sometimes they are not available or busy with their works, which results in delays in seminars and loss of electrical energy. To overcome all these complexities a digital assistant is needed. The main aim of this project is to develop an economically effective and performance wise efficient digital assistant for Seminar Halls (D.A.S.H) using Raspberry Pi for seminar halls based on the concepts of Natural Language Processing and Artificial Intelligence. It can control electrical equipment like lights, fans and projector, and also controls the presentation slides by voice commands or input from a touch screen or an infrared remote. This device makes conduction of seminars easy.

Project Members : VENKATA RAJESH MURALA, YERRAMSETTI JASWANTH, KALAGARA V V R S VISHNU, THEJAVATHU THIRUMALARAO

Guide : Dr . B Venkateswara Rao

The Induction motor is used in compressor of Air Conditioner, it draws 2 to 3 times rated current during starting condition. The control unit in Air Conditioner turns OFF the Compressor when room temperature reaches set value by the user and it will ON after one degree change in temperature. so this ON and OFF processes repeats many times so Induction motor consumed more power. In order to save the power consumption AC Power Saver device developed. In this device user can set minimum and maximum temperature setting. So the number of ON and OFF periods of the compressor decreased and power consumptions decreases.

Project Members :  Mr. A Hari Prasad

It is being used in the campus to carry diesel from petrol bunk to our campus power house (DG Sets available). It can carry weight up to one ton. Driver: BLDC drive of 750Watts, Batteries : Lead Acid batteries with 12V, 24A – 4 Nos; It is built in the year of 2014. This project funded by SAGTE, Vijayawada

Project Members :  S.Sateesh Kumar

Guide :  Dr. P.V.R.L. Narasimham

This project presents the design of closed loop buck converter based solar charger which maintain output voltage of buck converter is constant with respect to the PV panel output fluctuations caused due to different climatic conditions. As output power of the solar panel depends on the irradiance and temperature. In this project battery is used so that the power required to the load can be fed from battery when the solar power is not sufficient during heavy cloud cover or at night. The battery can charges the excess energy produced during the periods of maximum productivity of PV panel, and discharges it when the productivity of PV panel drops. In this closed loop buck converter is used as a solar charge controller to regulate the output voltage and power flow to load and the battery by using pulse width modulation technique. The width of pulse change according to change input voltage of buck converter or output of PV panel. This change in pulse width issued to control the output voltage constant. The pulse with is controlled by Arduino according to the error signal generated by difference of output voltage and reference voltage.

Project Members :  Sammeta Karthik, Mohammad Sameer Pasha, Uppuluri Saketh

Guide :  Sri.T.PURNACHANDRA RAO

Astronomical timer is used for switching ON and OFF the lightning or other electrical receivers in accordance to Sunset and Sunrise with an option to program a night break, which means a temporary switching OFF of the street light load for savings purposes of electrical energy. These timers with both astronomic sun set and sunrise times automatically adjust to the seasonal day-to-night time changes throughout the year. On the basis of information about the current date and the geographical coordinates of its location, the astronomical timer automatically sets daily, scheduled points of lightning switching. The exact time of switch ON and OFF is determined on the basis of the calculation of the position of the sun relative to the horizon and the moment the lights go on and off is set independently.

Project Members : Sri. R Madhusudhana Rao

This project is intended to gleam the lights and visualize the capacity of a person by his /her performance through pedaling. The idea behind this project is the game designed for urban community entertainment and fitness. The performer has been given a specified count within a span to pedal and such that if he/she fails at any cause the count display will be stopped and displays the performer level through a gleam of lights. The gleaming of lights works on the Arduino mega microcontroller and this is programmed using Arduino C- programming. The basic working of the system is based on the pedaling by the performer and this is captured by the sensor, thus resulting in the lights gleaming and matrix display displays the level. It is designed in such a way that an average person can pedal within the program specified span.

Project Members : THEJAVATHU THIRUMALARAO, KALAGARA V V R S VISHNU, YERRAMSETTI JASWANTH

Guide :  Dr B Venkateswara Rao

In the situation  of Covid -19 people are using hand sanitizer to protect from carona virus. In more public density areas like colleges ,theaters and hospitals it is very difficult to spray sanitizer with a person’s like security and watchman’s. The automatic hand sanitizer dispenser spray sanitizer with contactless. This device also incorporated with circuit to count the number of dispenses and also adjust the quantity of dispenses.

PROJECT MEMBERS  :  Mr. R. MDHUSUDHANA RAO

GPS Based Clock

This project is intended to display the date and time according to the GPS coordinates. The main theme of the project is to display the messages to be displayed occasionally with the scrolling in P10 display board such that the board displays both time, date caption. The ATMEGA328P microcontroller board in which it takes the GPS data through serial communication and transfer to P10 leds to display the content. The DMD library is used to visualize the display content to be scrolled.

Project Members : Yerramsetti Jaswanth, Kalagara V V R S Vishnu, Thejavathu Thirumalarao

CYBERNATION OF HOME APPLIANCES USING RASPBERRY PI

Monitoring, controlling and protection plays the most prominent role in any automation. However, due to factors like fast switching, ease of control, compact size and energy efficient, these devices require a system cybernation to track and diagnose. The cybernation does not affect the existing system but it adds the smart control of operation through the adaptive techniques. Three techniques were used to design the cybernation. The energy is being monitored and represented in the form of plot such that the user monitors the power consumed at each interval of time as now a days some of them are utilizing the solar power, so the power received from panels and consumed by loads are plotted. The protection and controlling are chosen to function from the same circuit with thyristor control. Therefore the Electromechanical devices used for protection such as MCB’s and fuses are being replaced for the individual rooms with the proposed device. In this paper Raspberry PI used for Home Automation along with, protecting the house hold equipment to minimize the use of MCB’s.

Project Members : Yerramsetti Jaswanth, Kalagara V V R S Vishnu, Thejavathu Thirumalarao

Guide :  Dr B Venkateswara Rao

SEMINAR HALLS AUTOMATION USING RASPBERRY PI

Seminar halls require devices such as computers, presentation pointers and man power to control electrical appliances and Presentation slides. The developed Digital Assistant minimizes the technical equipment and allows the host to control electrical equipment such as lights and fans, presentation slides right from the day-to-day devices like Mobile Phones. Any device that has Wi-Fi functionality can be used to control the electrical appliances and presentation slides including media irrespective of the operating system. By just scanning a QR code and entering the password, the user can get access to all the systems. Tinker board, a credit card sized computer, based server/client application gives secure and reliable control over the presentation including Media access. Node-RED, a programming tool, gives a friendly User Interface so that no prior knowledge is required to work with this technology. This device makes seminars more productive and efficient.

Project Members :  Kalagara V V R S Vishnu, Thejavathu Thirumalarao, Yerramsetti Jaswanth,

Guide :  Dr B Venkateswara Rao

 

MULTIFUNCTION METER

The product is regarding the DSP based multifunction meter which is able to measure the AC and DC voltages, currents, active power, apparent power, power factor and frequency. This can reduce the complexity of the circuit connections and makes the measurement comfortable. In the conventional meter there is a need of manual adjustment in order to get the different range of measurement of the Input, where as this multifunctional meter can automatically adjust according to the input. It can measure up to 1000V and a maximum of 40A.

Project Members :Dr N Vamsi Krishna, R Madhu sudhana rao.

Guide : Adjunct Faculty: Sri P. Ravi Prasad, CEO, PADS (Panda Analog and Digital Systems)