Projects developed during 2005-2011- History

Projects developed in 2010-2011:

Embedded system Projects:


The use of robots in different fields is common and effective in developed countries. In case of incident management or emergency rescue after a disaster, robots are often used to lessen the human effort where it is either impossible or life-threatening for rescuers. This robot will be a small tank-like rescue robot that can search rubble for survivors and deliver water, food or cell phones in disaster zones.

The robot will also be fitted with a video camera that broadcast scenes from the front of the camera to a remote TV monitor wirelessly. "People die because they get despair. If the robot delivers a cell phone, they won't feel alone. If the robot delivers water and food, they can hold out”.

The robot, has a robotic arm that can be remote-controlled to turn doorknobs, maneuver through rubble and carry crucial survival items after an earthquake or other disaster.

The machine also features infrared and carbon-dioxide sensors to find survivors by detecting their body heat and their exhaled breath.

The robot will have four sets of wheels, each driving a tank-like rubber track and powered by a total of six electric motors, enable the machine to push ahead over bumps and up and down slopes.

People trapped under rubble can also hear the voices of rescuers through a speaker   fitted to the robot.


The proposed project is to detect traffic offence of vehicles that do not stop at red light. The system will identify the offense committing vehicle using an implanted RFID in the vehicle and an RFID reader installed below the surface of the road at the signal. The system will transmit the vehicle data to a central computer using a GSM-GPRS modem in the system. At the central computer system, the vehicle data will be recorded in a database for further actions.


Here, a scratch card supplied by the electricity provider is used to recharge the consumer meter. The scratch card contains a group of digits that identifies the amount that can be charged. There different cards for different amounts. The card number will be unique and once used will be blocked by the supplier.

At the consumer side, a battery backed up device with a micro-controller, a GSM module, and a keypad to enter the digits will be supplied to re-charge the amount. This device is sealed and is connected to the digital energy meter.

When the consumer recharges using a scratch card an SMS message is send by the attached GSM module to the tower which connects to the server of the electricity board. If the number send from the GSM module is valid, then the recharge is successful and the consumer is provided with that particular amount, power for their usage.

The system at the consumer side will record the consumption, and display it in a countdown display that shows the remaining amount available. It will also warn when the remaining amount reaches a minimum set amount say: Rs. 50. If all the charged amount is consumed by the consumer, then a relay connected in the system will cut-off electricity to the consumer. After this the consumer has to buy recharge scratch cards and must charge it by entering the numbers in the scratch card to get the electricity connection enabled.


Wireless remote control systems have come to acquire a special place in this environment. A wireless remote control system will greatly increase the operational efficiency of the crane and ensure 'accident free' operation.

The innovation relates to the introduction of a wireless radio control system to control the EOT (electrically operated traction) overhead crane in steel plants. In the conventional system, during loading, unloading and shunting in shop transportation, the crane operator is required to be stationed inside the driver's cabin to operate the crane movements until completion of the task. A second person is required to be stationed on the shop floor to hook the sling to the material to be transported by the crane. Since the cabin, which houses all the joysticks and switches for manually driving the crane is typically 10 meters above the ground level, the person stationed on the ground has to give directions to the cabin operator when moving the load.

During such modes of operation the crane operator is inefficiently used and the cycle time for completing a function becomes high for the following reasons:

  • The operator cannot perform any other job. The operator remains idle for a considerable time as driving is dependent on the completion of other ground jobs.

5. A mechanical device, that helps to steady a moving robot that has tilted(fallen) due to collision or while negotiating a turn.

Moving devices like robots are in constant danger of tilting and falling while in motion. Usually these robots are either automatic, i.e.: they move themselves avoiding obstacles, or are controlled using remotes. In either case, they tend to fall sideways and are unable to correct their position themselves.  A tilt sensor senses the tilt angle from normal.  ie:  90 degree to 0 degree  or 90 degree to 180 degree. 0 degree means tilted and fallen towards left side while 180 degree means tilted and fallen towards right side.

The automatic mechanism attached to the robot can restore it to its original position by sensing the direction of fall or tilt. The mechanism pushes the robot to the left it it has fallen towards right and helps it to come to the steady state of 90 degrees and vice versa.

The tilt control  assembly is built using a mechanical structure.  A rectangular metal box of  length 4 cm , height 1.2 cm and width 1.2 cm as shown in the diagram. The box has a  hole at the centre of the bottom metal plate of the diameter .75 cm to hold a metal ball of 1 cm diameter.  When the box is tilted to one side the metal ball will move from this hole and will travel towards the tilted side and will rest in that side.  There are two sets of holes in each side, on the sided of the box that comes in line. It is designed such that when the ball reaches at any side due to tilt, the ball will obstruct the holes making light passing through the holes blocked.

A set of  sensors built using a pair of infra red led and photo diodes are fixed at each end of the box, aligning the. The working is such that, when the ball obstructs the holes at one side, the IR rays from the IR led is blocked and not reached at the photodiode. The transistor connected to the photodiode will not conduct at this time and so the second transistor gets conducted. This makes the tilt control motor on/off relay becomes ON  and the motor rotates. Similarly when the tilt is towards right side, the ball obstructs the hole at the right side making the relay ON and the motor rotates.

6. Controlling the operation of a DC-DC power converter using a PIC microcontroller

The power supply from DC power sources would be in most cases unregulated. This has to be regulated using a DC/DC converter. Battery chargers and distributed power systems are examples of such devices. The aim of this project is to build a device that can control the operation of a DC-DC power converter using a microcontroller. We would need to use a dedicated Switched Mode Power Supply (SMPS) controller IC in conjunction with a microcontroller. The microcontroller used here is a PIC16C620A which can generate the SMPS controller functions. Thus, we do not need another dedicated SMPS controller IC. This proposed method shows an improvement in the case of efficiency. The efficiency of a DC/DC Converter is expressed as the ratio of output power to input power.

Our idea of the project “Car anti theft wireless alarm” is about preventing car theft by designing and developing a car security alarm that goes off automatically if an attempt is made to steal the car.


In this project, a low power RF transmitter that generates rf signal in the FM radio band is placed hidden inside the car, powering from the car battery. An alarm circuit with an FM radio receiver as input is used as the alert system. This alert system is placed inside the house, where the car is parked.

As long as the FM radio receiver receives signal from the transmitter in the car, the alarm is not sounded. But if the car is moved away, about 25 to 50 feet from the receiver, the RF signal from the transmitter is not received by the FM radio receiver in the alert system, and so the alarm in the alert system is turned on. This produces the alarm sound from the alert system.


The use of RFID solutions in asset protection, security, attendance recording and subscription systems are now common and effectively used in developed countries. In this project we use RFID technology to announce the current time and day of the week, timings of the next few buses reaching the bus stop and also details of their destinations. This will help blind people to embark buses safely.

In this project, the front-end will have an RFID reader that recognizes special RFID tags issued to blind people. When the RFID card is placed near the reader device that is fixed in each bus stop, the system will start announcing details from pre-recorded voice tags.

In the main system a micro-controller with enough memory subsystem and a digital voice recorder and replay IC is used.

The system will use a voice processor to replay the recoded voices, after using a look up table database.

The database can be updated by authorized people.


Projects developed in 2009-2010:

1. Advanced remote digital video monitoring and recording system.
Uses analog cameras with a DVR to monitor and record scenes. Remote viewing through internet.
Monitor scenes from anywhere using laptops or PDAs.

2. GPS/GSM wireless home security and premise monitoring system.
It uses various sensor devices, GSM/GPRS modem and a coded wireless network. The GSM modem sends alert messages and calls and also the longitude and lattitude details from the GPS to several destination mobile phones to locate the residence that placed the alert. The scenes recorded from premise cameras are also sent through GPRS to a destination website.

3. High power LED lighting systems for flood lights, tube lights and replacement for CFLs.
We have developed various prototypes of 150 W and 500 W flood lamps, A 40 W and 20 W tube light replacement and an 8 W and 12 W CFL replacement using 1W and 3W power LEDS. These LED lights demonstrated a power saving of more than 30%. These LEDS are having a life of providing light for more than 25 years. Prototypes and technology can be provided to manufacture these lights.

Projects completed during 2005- 2008

Electricity power theft monitoring System using RF and GSM mobile technologies

This is a project to monitor and control electricity power theft from individual users. A photosensor device attached to the digital energy meters installed at individual consumers premise sends meter reading periodically at set intervals to a nearby distribution tower of the energy provider. The reading is sent to the distribution point using RF modems. At the distribution point these individual readings are periodically summed up and compared against the total meter reading for a period. If the difference is greater than a set tolerence value, an alert is send to the energy providers monitoring centre with the periodical readings and the differnce. This readings can also used for billing. The system is designed and developed using PIC 16F877a micro-controllers at both end. The programming is done in Assembler using MicrochipMPLAB. The system has been successfully demonstrated to various agencies. A fully functional prototype is availble for manufaturing this device.

Remote weather station is used for sending weather data from a remote weather monitoring station to any PC located at another part of the world , connected through the internet.

With the help of this remote weather monitoring station, the master control station located at another geographical area can constantly receive the weather data. The remote weather system monitors temperature, humidity, atmospheric pressure etc. and send data to the remote PC (at master control station ) at regular intervals , thus updating the data base in the PC. The weather station communicates to the PC through an RS 232C link. For sensing the temperature , humidity etc. respective sensors are used. The software in the computer regularly calls the remote weather system through the RS 232C port . The system sends the current readings of the sensor , thus updating the computer database. Data from the sensors are analyzed by the microcontroller and then send to the RS 232 port.

This project is designed and developed to send any data ( analog or digital ) to another location using GSM mobile phone network. A micro-controller system with the software reads the data from various sensors and process it into numeric values or binary values and sends it using a GSM mobile phone connected to it. The data is received by another mobile phone at any part of the world.

This project is designed and developed to send the data from a weather station through GSM mobile network. A micro-controller system with the software reads the data from various transducers and process it into numeric values and sends it using a GSM mobile phone connected to it. The data is received by another mobile phone at any part of the world.

This project is designed and developed for controlling electrical power intelligently to reduce energy consumption. It also automates the on/off sequences of electrical lines based on pre-set start and end time. The system uses a micro-controller and software based real-time clock to set and control the power-lines used for lighting and motor controls of an industrial establishment.

This project is designed and developed for using inside an automobile for sending SMS message to another mobile phone incase of a collission or accident. The micro-controller based system in the vehicle is provided with an interface that connects to a mobile phone. The software inside the micro-controller is programmed to send alert message to the stored mobile number automatically, in case of an accident or collission. The system will send a message with the vehicle number and the place of accident as an SMS message.

This project is designed and developed for using inside an automobile for protecting the vehicle from theft. A PIR sensor is fitted inside the vehicle that detects intrusion entry into the vehcile by any means. A wheel movement sensor is fitted in one of the wheels that detects the wheel rotation for more than 360 degrees. A high volume alarm will be sounded in case of any of these signals. Also an SMS message will be sent to a mobile phone alerting the intrusion. The vehicles ingition will be disabled automatically and can not be re-started in any manner except by the owner by using an original key-chain RF remote control.

This project is designed and developed for KSEB to replace a wireless transformer switching system. The system uses a transmitter module and a receiver module with intelligent micro-controllers. The software take cares of the switching and feedback of three phases and maintains safety and accuracy.

Both the transmitter stage and the receiver stage uses an RF encoder/decoder transmitter and receiver module that processes digital switching of interlocked relays. The receiver sends back current through the switch using a current transformer and then feeding this analog value to the mico-controller ADC module. The value is transmitted as binary data and displlayed in the LCD display of the control transmitter system. The phase switching relays at the receiver system can be independantly switched on or off by the remote transmitter system from a safe and secure place.

'RFID BASED TOLL GATE CONTROL SYSTEM' simplifies the access control of vehicles at toll gates or security gates. An RFID tag is installed on each vehicle with read/write memory. A reader device at the gate reads this data from the vehicle and compare it with the data in the computer database and allows the access accordingly by opening the gate. A time stamp and the entry count is also written into the rfid tag each time the vehicle passes through the gate. This data is used to print a daily or monthly bill for toll collection from the vehicles.

The entire sytem is developed as an embedded system using a PIC 16F877A micro-controller and associated devices. The system is connected to a PC using the RS232C interface in the embedded system. This allows the system to read and write data from/to a database that is used to compute tariffs and print toll bills.

Sun tracking system is used to position the solar panel precisely facing sun, so that maximum sunlight falls into the solar panel. This enables the solar panel to produce maximum voltage at all time during the day. Following is the block diagram of the system. The software for the embedded system is developed using assembly language and is burned on a PIC 16f877A micro-controller. This micro-controller is placed on a fabricated PCB board which has the necessary interface for an LCD display , analog input and digital output driver. The digital output from portb,7 drives a stepper motor that steps as long as the output is high. The driving output goes low when the adc input gets maximum voltage and the stepper motor stops placing the solar panel correctly. When the input voltage drops again the stepper motor runs until the maximum voltage appears. This repeats periodically so that maximum voltage is produced from the solar panel.

This UPS monitoring system is mainly used inside mobile towers situated at remote places. We use GSM (Global System for Mobile communication) for the transfer of messages between towers and service person. In this, the embedded system continuously monitor the voltage of the battery of ups. If the primary battery voltage is less than the set voltage, the system automatically switched to the secondary battery and send an sms to service persons mobile phone using SMS messaging so that he can come and replace the damaged battery.

PIR based Vehicle Intrusion Detection system with GSM.
This system is used to detect intrusion into a vehicle and report the intrusion. The whole system is controlled by a micro controller. The GSM messaging technology (Global System for Mobile communication) is used to send SMS to the users mobile phone informing that the vehicle is intruded. The user can check whether the system is working correctly or not, by sending a test SMS. A PIR (Passive Infra Red) camera sensor is used to detect any kind of intrusion into the vehicle. When an intrusion is detected the system immediately sent an SMS to the user mobile. The hooter is sounded, a light is flashed and the car is immobilized by a relay, which cuts off the engine connection.

Power factor correction is an important requirement especially in industrial premises where lot of inductive loads like motors and pumps are used. The aim of this project 'DESIGN AND SIMULATION OF UNITY POWER FACTOR RECTIFIER' is to design , simulate and fabricate a unity power factor rectifier using the boost convertor method.

Hardware part
Circuit design: A circuit has to be designed using the rectifier, MOSFET and the operational amplifiers. 1. A PCB has to be designed and fabricated. 2. The circuit has to be fabricated using components and to be wired on a printed circuit board.

software part
1. The circuit is drawn in ORCAD capture software and simulated using the simulator. 2. Outputs are plotted on graph paper.

Patient temparture monitoring and ALERT system using PIR and GSM.
This system is used to monitor a critical patients body temperature through a temperature sensor and sends an sms message to a pre-stored mobile phone number with the temparature reading as an SMS message. The system also has a PIR sensor that detects any intrusion into the room and it sends an alert SMS to the mobile phone when an intrusion occurs. The whole system is controlled by a micro controller. The GSM messaging technology (Global System for Mobile communication) is used to send SMS to the target mobile phone.

This system is used to continuosly monitor the temparature and RPM of an industrial motor that is used for some critical process. When the temperature is increasedintrusion into a vehicle and report the intrusion. The whole system is controlled by a micro controller. The GSM messaging technology (Global System for Mobile communication) is used to send SMS to the users mobile phone informing that the vehicle is intruded. The user can check whether the system is working correctly or not, by sending a test SMS. A PIR (Passive Infra Red) camera sensor is used to detect any kind of intrusion into the vehicle. When an intrusion is detected the system immediately sent an SMS to the user mobile. The hooter is sounded, a light is flashed and the car is immobilized by a relay, which cuts off the engine connection.

Vehicle Accident Detection System using GSM
This system is used to detect any impact or accident occured to a vehicle during travel. The whole system is controlled by a micro controller. The GSM messaging technology (Global System for Mobile communication) is used to send SMS to the users mobile phone informing that the vehicle is met with an impact or accident. The user can check whether the system is working correctly or not, by sending a test SMS. A set of four special sensors are fitted on the four sides of the vehilce which sends a trgigger signal when the vehicle rceives an impact. When an impact occurs d the system immediately sent an SMS to the target mobile. A hooter is sounded and light is flashed in the car, that alerts the nearby people who can reach the vehicle for extending help immediately.

Electronic Ballast (Inverter) to Power HID Lamps from 12 Volts DC
Here is a circuit that can be used to power a variety of small (50 w or less) HID lamps, as well as (with modifications) fluorescent lamps up to about 40w, or HeNe lasers, flashes/strobes, and neon tubes, etc., from a 12 V car or marine battery or medium-size gel cell. This circuit does require a homemade transformer. This transformer is not hard to make, just a little tedious for hand winding. Because this circuit gives the lamp high frequency AC (except during starting), none of the limitations associated with DC-output supplies apply (i.e., not using certain types of HID's, which cannot tolerate DC operation).