Category: EEE seminar topics

Introduction to Simple Speed Control Method For Small Induction Motors Base On Phase Difference Seminar Topic:

This paper proposes method for speed control of induction motor with out of the sensor. There are various methods available for controlling the speed of induction motor but they require additional equipment and expensive. By using a equivalent circuit we will calculate the phase difference and based on that load torque is estimated for controlling the speed of induction motor.

Working model:

For calculating the phase difference an equivalent circuit is designed. The power factor is the most important factor for estimating the rotor speed. From the measured values we can assume the relation between phase difference between and the torque. Here the phase difference is converted into time difference for estimating the torque characteristics on a digital counter. Here a L type equivalent circuit is built for calculating the phase difference.

By calculating the phase difference for stator currents we will control the speed of motor. As the load torque changes the rotational speed of motor also changes so a microprocessor is used for calculating the load torque values so as to maintain a constant speed. Here a control circuit performs the respective operations for maintaining the constant speed of induction motor. The tests are performed to check the accuracy of the circuit, different load torque conditions are applied and values are compared to see the changes for different operating frequencies.

Applications:

The induction motors are extensively used in various house hold devices like refrigerators and air conditioners and also in industrial devices. This is cost effective device for controlling the speed of induction motors.

Download ECE Seminar Report on Simple Speed Control Method For Small Induction Motors Base On Phase Difference .

Introduction to Aluminum Alloys Latest Seminar Topic:

Aluminum has brought a revolution in metals and it has been used in almost every engineering design. Aluminum has outstanding property which exhibits high strength and low density and is light weighted. To increase the properties of aluminum its alloys are being developed and used extensively. The aluminum alloys are use used in extensively in aircrafts, ships and automobile design. Aluminum honeycomb produces one of the strongest material and exhibits very light weight properties in terms of weight ratios. In this paper we will discuss the preparation of aluminum honeycomb materials and their usage in engineering designs.

Brief on aluminum honeycomb:

Honeycomb cores are used for sandwiched structures which are widely available in variety of materials. The properties of  honeycomb materials depends upon the size of the cells and thickness and they can be easily conform to a structure without any excessive mechanical force or heating. These are used for giving stiffness to very light laminates and occupy very small area. The expansion method is the primary method used for the manufacturing of honeycomb materials. We can produce honeycomb materials by using corrugated process.

Corrugated process is mainly used to produce materials with higher density. The most common honeycomb cell configuration is the standard hexagonal cell configuration which is currently available in all metallic and non metallic materials. Different compression rests are performed on the honeycomb materials to check the strength of the materials.

Applications of honeycomb materials:

The aluminum honeycomb materials are mainly used in structural materials. These are used in aircrafts for designing of leading and trailing edges and stabilizers. These are also used in manufacturing of missiles satellite launch vehicles and automobiles.

Download Aluminum Alloys Latest Seminar Topic for ECE Branch 2012 .

Introduction to Efficient and Economical Solution for Traffic Congestion in Urban Areas ECE Seminar Topic:

The main aim of this project is to reduce the traffic problems in urban areas. The entire project is done using single beam analysis and manual or ms excel method and finite element method. The traffic in the various areas is analyzed and various methods are proposed for controlling the flow of traffic. In this paper we will discuss how various methods are used for controlling the flow of traffic.

Brief into the methods for controlling traffic problems:

The traffic at various junctions is calculated and the flow of vehicles is noted for different timings. By taking preventive measures and by making new road constructions the traffic problems are overcome. By halting the flow of cars in narrow streets and by using some alternative routes the flow of traffic is controlled. By using public transport system in busy areas the use of their own vehicles gets reduced by the people. By constructing fly over in the busy areas the traffic gets controlled. In busy timing by making the vehicles to go in one way the traffic problem gets reduced. By constructing multistoried parking buildings the space for parking on busy roads gets reduced. 

Finite Element method:

In this method system of points create a mesh which gives the characteristics of the structural design. This method is used for construction and maintenance of under pass flyovers. When the vehicles are flowing on the flyovers by using this method we can develop a spread sheet for measuring the stresses and visualizations on the bridge and to check the structural defects. Thus we can conclude that these methods can be implemented in metropolitan cities for controlling the traffic problems. 

Download Efficient and Economical Solution for Traffic Congestion in Urban Areas ECE Seminar Topic .

Introduction to  Breathe Alcohol Tester with Seminar Topic:

Breath alcohol tester is an electronic device which the information of alcohol level in blood by analyzing the breath exhaled into the system. This device employs a semiconductor device for measuring the alcohol level in blood. The advantage of using semiconductor device is that it is highly robust and highly immune to shock and vibration and more reliable. There are other methods for finding the alcohol  level in  blood like chemical reaction and infrared absorption method which are not that effective like a semiconductor device and they are very expensive and have a short life time. In this paper we will discuss the working and applications of alcohol testers.

Working model:

The alcohol levels are tested by using a sensor which consists of semiconductor material and is protected by a double layer of stainless steel screening and the device is mounted on a ceramic tube. When the alcohol tester is on the sensor which consists of a semiconductor gets heated to normal temperature which causes a depletion layer to form between the surface and sensor and it absorbs oxygen at this time and  shows high resistive properties and if a drunken person is blows his breath , the alcohol reacts with the oxygen and the changes occur in the depletion layer and it shows low resistive properties and the circuit calculate the level of alcohol according to the change in the resistive properties.  A 7805 voltage regulator which supplies a 5v dc is used for heating the coil present in the sensor.

Applications:

These are use by traffic police to restrict the drunken drivers from driving the vehicles during night time. This is fast method for giving the alcohol level in the blood whereas the normal chemical reactive methods take a lot of time for giving results. This method can also be employed for knowing the toxic levels in blood.

Download ECE Seminar Topic on Breathe Alcohol Tester with Seminar Report  .

Introduction to ECE Seminar Topic on Eye Writer:

Eye tracker is a device which measures the movement and positions of eye. Eye writer glasses and the open source software translate it to lines on screen. There are several eye trackers available and the most popular one in which employs video imaging method for tracking the movement of eye. This paper discusses the working model of eye writer and its applications in various fields.

Brief on eye writer:

From the 18^th century the research are going on for tracking the movement of eye. Eye trackers measure the rotations of eye and there are three methods for measuring the rotation of eyes. In the first method we use a contact lens embedded with a mirror or a sensor which calculates the rotation of eyes.

We can use a optical sensor which measure the movement of eye.  The other method to calculate the movement of eye is to place electrodes around the eye which captures the electric potentials by which we can measure the rotation of eye. We will employ a bright pupil or a dark pupil for measuring the movement of eye. The difference among the bright pupil and dark pupil occur by placing the illumination source with respect to the optics.

Applications:

These are very helpful for handicapped persons where they can send emails and convey their information on a computer screen. These are used in research purposes for exploring various fields of science and technology.

Download ECE Seminar Topic on Eye Writer  .

Introduction to ADHOC Networks Seminar Topic:

The main objective of this paper is to give an idea of adhoc networks. As we already there is a tremendous growth in usage of internet and the computing is also cheaper earlier. Generally personal networks which we come across daily are wired and have complicated topology. Due to this adhoc networks are being developed. This network does not require any router. In ad hoc networks base stations are not present and any two nodes are allowed to communicate directly if they are close to each other. Many of the companies have been offering their product s and services due to this.

Brief into design and working

The routing protocols used in this adhoc networks are table driven and source initiated. Table driven protocol maintain updated information from each and every node where as source initiated is  demand driven i.e it routes only when asked by source node only. There are two types of architectures available in wireless networks. In Stand alone architecture (adhoc mode) all the devices are communicating with each other in peer to peer connection mode whereas in centrally coordinated architecture all devices are connected to wireless network with the help of access point i.e router.

Advantages and Disadvantages:

The adhoc networks are easy to set up when compared to that of conventional networks. These networks are highly Portable and reliable. The adhoc networks do not require any additional equipment like wires and devices like hub and routers. The main disadvantage of this network is that if computer is connected to the Internet gateway then it should be always turned on.

Download ADHOC Networks Seminar Report .