1.                     Embedded Energy Saver

Energy conservation reduces the energy consumption and energy demand per capita, and thus offsets the growth in energy supply needed to keep up with population growth. This reduces the rise in energy costs, and can reduce the need for new power plants, and energy imports. The reduced energy demand can provide more flexibility in choosing the most preferred methods of energy production. This project focuses on Energy conservation by using sensors to sense person coming in & going out of the room or a specific area. Sensors are also used to detect the ambient light & accordingly turn ON bulbs at the required intensity.The circuit consists of Micro Controller 8951/8952, IR sensor for detecting people entering or leaving the room, LDR for detecting the ambient light, ADC for converting the LDR output into digital value & giving to the controller & a TRIAC for Turning ON/OFF & changing the bulbs intensity.

2.                       DRE Voting Machine

Direct Recording Electronic (DRE) voting machine records votes by means of a ballot display provided with switches & records the data in Memory. The system increases the speed of vote counting. Significant cost can be reduced by using these electronic machines as it saves paper & the printing cost. Using advance technologies it can be used to assist handicapped people. It can also be programmed to display in multiple languages.It basically consists of a Microcontroller (8951/8952). Each Booth will contain a controller with LCD display, Switches for selecting the option, an EEPROM & a serial port which can be used to transmit the data to a PC when final counting has to be done. A remote master switch will be provided with the administrator. The voter can enter a vote only after the master key has been pressed. 

3.                       Automatic Meter Reading

Automatic meter reading, or AMR, is the technology of automatically collecting data from water meter or energy metering devices (water, gas, and electric) and transferring that data to a central database for billing and/or analyzing. This saves employee trips, and in the case of estimates, billing can be based on actual consumption rather than on an estimate based on previous consumption, giving customers better control of their use of electric energy, gas usage, or water consumptionIn this all meters are connected serially to a central computer where the meter reading is received & saved in its database. Moreover if the bill is not paid in time the power can be cut off from the central computer & upon receiving the bill the power can be restored within a minute. The circuit consists of a current transformer for sensing the current, whose o/p is given to ADC the digital data from the ADC is read by the controller, the controller then calculates the current consumed & accordingly increases the meter reading. This is displayed on LCD. The controller is also connected to the central computer using MAX 232 & can switch ON & OFF the power of the house using a relay. An EEPROM is used to save the last meter reading in case of power failure. 

4.                       Patient Monitoring System

It is required to monitor the patient’s temperature, heartbeat & if the temperature increases above certain level injection has to be given. Our system does the same a sensor is used to monitor the patient’s temperature; if the temperature goes above a certain level a predefined amount of medicine is given. And an indication is given to inform the doctor that injection has been given.A microcontroller is used to get the patients temperature & display it on LCD. The amount of medicine to be injected is entered through the keypad & also displayed on LCD.