Department of Electrical Engineering

In this project Security system exploitation using micro controller and IOT has been done. The system is suitable for remotely controlling the home appliances. The system may be employed in many places like banks, hospitals etc. The project has proposed the smart industry that can support a lot of industry automation systems. A industry contain a connection between wireless communication, sensors monitoring and tracking. Smart industries are a huge that includes multiple technologies and application that can be used to provide security and control off the industry easily.

This project discussed the designed modules like sensors circuits monitoring and tracking if the industry trough IP camera mobile notifications and industry navigator.

In this project, an efficient approach for smart industry was proposed and implemented. C programming language and ATMEL AVR micro controller have been used to connect the sensors circuit to the industry and to control the IP camera.

The idea of implementation of this project is that if load on one transformer is increases then the relay will sense the change in current & micro controller operates & slave transformers comes automatically in operation to share the load. The work on “Automatic load sharing of transformers” is successfully designed, tested and a demo unit is fabricated for operating three transformers in parallel to share the load automatically with the help of change over relay and relay driver circuit and also to protect the transformers from overloading and thus providing an uninterrupted power supply to the customers.

This project reduces the manual work for sharing the load of transformer. Also, provide the reliable power to the consumer by using the load, sharing of the transformer with another transformer, it increases the efficiency of the system. Using provide the solution for the fault on the line and continues electricity provide to urn the loads. This will have done automatically. Increase the life of the transformer and to make the system efficient.

This project will provide better service at input as well as output of library, in more elaborate form you have to just select the book at book issue counter book will come automatically to your end. This would reduce the user efforts and save time, in this project we will implement practical knowledge of mechanical engineering. The goal of his project, library automation is tho automatically issue books and important fact is that it provides security against theft.

Mobile operated robotic mopper:

This project is designed to provide a soft and smooth start to a 3 phase induction motor. The three phase induction motor during the initial starting condition draws up much higher current than its capacity and the motor instantly reaches the full speed. This results in a mechanical jerk and high electrical stress on the windings of the motor. Sometimes the windings may get burnt. The induction motor should start smoothly and gradually catch up the speed for a safer operation. This project is designed to give a soft start to the induction motor based on the SCR firing triggered by heavily delayed firing angle during starting and then gradually reducing the delay till it reaches zero voltage triggering. This results in low voltage during start and then gradually to full voltage. Thus the motor starts slowly and then slowly picks up to full speed. This project consists of a six anti-parallel SCRs, two for each phase, the output of which is connected to a set of lamps representing the coils of a 3 phase induction motor Output from the comparators is fed through opto-isolators to trigger the SCRs.

Further the project can be enhanced by using IGBTs in place of SCRs with PWM control to reduce harmonic distortions often encountered in SCR triggering mechanism.

This thesis induces comparative analysis of DC-DC Boost Converters in which we compare two DC-DC boost converters. One with transformer and other without transformer and conclude that output voltage obtained from converter with transformer is approximately two times of output voltage obtained in converter without transformer and it also has high powerr rating. But the drawback of DC-DC Boost Converter with transformer is losses is more in this converter due to presence of transformer and hence has an efficiency of approximately 92.5% which is low as compare to DC-DC Boost converter without transformer which transformer which has an efficiency of approximately 98.5%.

From the simulation results it is found that in case of the boost converters, the desired output voltages can be obtained by selecting proper values of inductor, capacitor and switching frequency. All of these individual theories were difficult for anyone to grasp primarily and putting them collectively in the simulator which was extremely puzzling. But it has been done most excellent to formulate an outstading scheme dissertation with affluent in its contest. At each stage, targets were set to acquire the necessary skills to meet the criteria of the research and design the circuits for implementation into the software simulation. This research gives the opportunity to study new skills and raise valuable knowledge in circuit designing and problem solving skills which has greatly enriched knowledge and understanding through the erudition route which may help one in for the further progression.

We have successfully met our design goals and demonstrated autonomous flight. The main objective of this was to model and control a quadrotor prototype, having a tri axis accelerometer and a compass as its sensors. In the first phase of this, objectives were defined for the quadrotor design, and based o them a study was carried out on the electronics that would be part of the aircraft. This analysis resulted in the construction of a quadrotor capable of achieving a flight. Knowing the characteristics of our quadrotor, we proceeded to the modeling of the aircraft’s dynamics for implementation of the resulting equations in a computer simulation environment. Thus, we found that the system is completely controllable when all states are available. Joystick and the quadrotor’s control unit, the Arduino. Unfortunately, the quadrotor displayed an unstable behavior, It was assumed that the lackof inclusion of the Pulse Width Modulation signal resolution in the simulations could be the reason why this instability had not been foreseen. After introducing this new element in the simulation, we found nevertheless that the controller could still drive the system to the intended reference, although with a little more difficulty. This information led us to analyze the noise comingfrom the sensors with the motors running, which proved to be the source of the problem. All the work done so far shows only that there are several aspects of the control process that need to be corrected/improved in order to make a controlled flight for this prototype possible. In particular, the inclusion of 3 gyroscopes (one for each axis of rotation) should be considered, which together with the tri-axis accelerometer, form a combination of sensors that has already been tested in quad rotors, allowing for very good control over its pitch and roll angles. The idea is that with gyroscopes we can determine orientation,but they drift over time (long-term errors), which is something we can correct with accelerometers (short-term errors, i.e. They are very noisy). But even the, we would need something else to correct the drifting yaw angle from the gyroscope, which could be done with a magnetic compass. The long-term idea is that adding a greater number of sensors, in addition to those duggested, can only improve the quality and quantity.

It would also be interesting to develop the simulations further by including new elements such as aerodynamic forces (i.e. Wind), collisions and other types of control methods, such as Proportional Derivative controllers. The quadrotor prototype should also be taken to an outside environment to see its performance tested under more extreme conditions.