Department of Electronics and Communication Engineering

    • Electronics is the science of how to control the electric energy, energy in which the electrons have a fundamental role. Electronics deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive electrical components and interconnection technologies. Commonly, electronic devices contain circuitry consisting primarily or exclusively of active semiconductors supplemented with passive elements; such a circuit is described as an electronic circuit.

      Communication occurs when the exchange of information between two entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves. The word is often used in its plural form, telecommunications, because it involves many different technologies.

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    • This system is designed by using two sets of IR transmitters and receivers. These IR sensors are placed in such a way that they detect a person entering and leaving the room to turn the home appliances. In this optimum energy management system, a microcontroller is the central processing unit of this project which is of 89S51 controller from the 8051 family. This system facilitates a bidirectional visitor counter for displaying the number of persons inside the room.

      When a person enters into the room, an IR beam is obstructed between the IR transmitter and the receiver. This IR obstruction from the sensor-1 gives the corresponding signal to the microcontroller. The microcontroller is programmed in such a way that by the reception of the signal from the sensor-1 it turns on the fans and lights inside the room. Thus, the microcontroller gives command signals to a relay driver which turns the relays such that all these appliances turn on.

      When the person leaves from this room, another set of IR sensors enable and give control signals to the microcontroller. Furthermore, similar to the above process, this system turns off the appliances like fans and lights. Apart from this, the system also takes account of the number of persons inside the room so that this control operation is varied depending on the persons’ availability in the room.

      For every person entering and leaving the room, the microcontroller reads the digital input from two receivers, and calculates the number of persons inside the room, and then displays it on the LCD. When the persons’ count is greater than one, the microcontroller turns on the room light and when the persons’ count is zero, it turns off all the lights and fans.

    • Automatic Wireless Health Monitoring System in Hospitals for Patients

      The project is designed and developed for monitoring patients remotely using a wireless communication system. The main aim of this project is to monitor the body temperature of the patient and display the same to the doctor through RF technology.

      In hospitals, patients’ body temperature must need to be monitored constantly, which is usually done by doctors or other paramedical staff. They observe the body temperature of patients’ constantly and maintain a record of it.

      The components used in this project include an 8051 microcontroller, a power supply unit, a temperature sensor, an RF transmitter, a receiver module and a LCD display. The microcontroller is used as a central processing unit for monitoring the body temperature of the patients. The working of this project is explained with the help of a block diagram, which consists of a power supply block that supply power to the entire circuit, and a temperature sensor that calculate a patient’s body temperature.

      In the transmitter section, the temperature sensor is used to read the body temperature of the patients continuously and the data is sent to the microcontroller. The transmitted data is encoded in to serial data over the air through RF module and the body temperature values of the patients are displayed on the LCD display. With the help of an antenna placed at the transmitter end, the data is transmitted to the receiver section.

      In the receiver section, a receiver is used to receive the data and the received data is decoded by using a decoder, and the transmitted data is compared with the data stored in the 8051 microcontroller, and then the data is displayed on the LCD screen. The receiver module placed at the doctor’s chamber continuously reads the data and the patient’s body temperature data is displayed on the LCD, wirelessly.

    • Traffic Light System Controller using Microcontroller

      Traffic congestion is a major problem in cities. Due to this heavy traffic, routine commuters often get delayed for their day-today activities, and as a result the productivity of the workers, their timings and routine work schedules get affected. Particularly for the travelers and tourists travelling thus become a menace, and thus affects their activities as well. To overcome this traffic related congestion, the implementation of a microcontroller based mini project on traffic signal light system controller is being discussed here. This particular system is designed to reduce the demand for a vehicle use and to improve the mobility and safety.

      The project is developed to meet the requirements of a solid state traffic light controller by using a microcontroller as the main controlling element, and LEDs for indication purpose. The microcontroller is programmed such that the time and phrase are adjusted and displayed using seven-segment LED display

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