Edgefx Technologies Pvt. Ltd.

Notice Board is primary thing in any institution / organization or public utility places like bus stations, railway stations and parks. But sticking various notices day-to-day is a difficult process. This project deals with an advanced wireless notice board.

The main objective of this project is to develop a wireless notice board that displays messages sent from the user’s mobile. When a user sends a message from his mobile phone, it is received by a SIM loaded GSM modem at the receiver unit.

The GSM modem is duly interfaced through level shifter IC for establishing RS232 communication protocol to the microcontroller. The message so received is thus sent to the microcontroller that further displays it on electronic notice board which is equipped with a LCD display interfaced to a microcontroller from 8051 family duly powered by a regulated power supply from mains supply of 230 volt ac.

Further development to this project can be done by providing message storage facility by non-volatile memory i.e. EEPROM attached to the microcontroller for retrieval of old messages if required. It can also be expanded to a bigger LCD screen.

Additional Information:

• Item Code: 201

The project is designed to control a robotic vehicle with a touch screen display unit for remote operation. The touch screen remote control is used at the transmitting side to transmit RF control signals. At the receiving end, a pick n place robotic vehicle is used to respond to those signals and perform the task.

An 8051 series of microcontroller is used for the desired operation.At the transmitting end using a touch screen control unit, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc.

At the receiving end four motors are interfaced to the microcontroller where two for them are used for arm and gripper movement of the robot while the other two are for the body movement.

The RF transmitter acts as a RF remote control that has the advantage of adequate range (up to 200 meters) with proper antenna, while the receiver decodes before feeding it to another microcontroller to drive DC motors via motor driver IC for necessary work.

The main advantage of this robot is its soft catching arm that is designed to avoid extra pressure to be applied on the object.

Further the project can be enhanced by interfacing it with a wireless camera so that the person controlling it can view operation of the arm and gripper remotely.

Additional Information:

• Item Code: 255

The project is designed to develop a robotic vehicle using RF technology for remote operation attached with wireless camera for monitoring purpose. The robot along with camera can wirelessly transmit real time video with night vision capabilities. This is kind of robot can be helpful for spying purpose in war fields. An 8051 series of microcontroller is used for the desired operation.

At the transmitting end using push buttons, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end two motors are interfaced to the microcontroller where they are used for the movement of the vehicle.

The RF transmitter acts as a RF remote control that has the advantage of adequate range (up to 200 meters) with proper antenna, while the receiver decodes before feeding it to another microcontroller to drive DC motors via motor driver IC for necessary work. A wireless camera is mounted on the robot body for spying purpose even in complete darkness by using infrared lighting.

Further the project can be enhanced using DTMF technology. Using this technology we can control the robotic vehicle by using cell phone. This technology has an advantage over long communication range as compared to RF technology.

Additional Information:

• Item Code: 153

This project is designed to gain access to an area or control a device by using a valid smart card only. The security of any organization is the top most priority for the concerned authorities. For this reason only, the authorized person with a valid smart card is allowed to operate the device/ to access a secure area.

Earlier, human supervision was required to monitor all these parameters, but with this proposed system no supervision is required as only authorized persons are provided with valid smart cards to operate devices.

A smart card reader is provided to read data from the card assigned to the authorized personnel. The smart card reader is interfaced to an 8051 family microcontroller. Whenever the data read by the smart card matches with the data on the microcontroller then LCD would display that the card is authorized and a relay is used simultaneously to switch ON a lamp (indicating a device or access to secure area).

If an invalid card is inserted in the smart card reader, it displays that the card is not authorized and the load (i.e. lamp) remains OFF indicating that the user is not authorized to access the particular area/device. This project can be enhanced further by integrating GSM modem such that any attempt of unauthorized access is made, then an alert SMS is sent to the concerned department.

Further it can be upgraded to RFID / Thumb / IRIS identification system for higher degree of security system.

Additional Information:

• Item Code: 21

In this project, a wireless communication system is designed and developed for remote patient monitoring. The primary function of this system is to monitor the temperature of a patient’s body, and display the same to the doctor through RF communication.

In hospitals, where patient’s body temperature needs to be constantly monitored, is usually done by a doctor or other paramedical staff by constantly observing the temperature and maintaining a record of it.

It is a very tedious method. In this proposed system transmitting module continuously reads patient’s body temperature through a digital temperature sensor, displays it on the LCD screen and sends it to the microcontroller which transmits the encoded serial data over the air by RF (radio frequency) through an RF module.

At the receiving end, a receiver is used to receive the data, decode it and feed it to another microcontroller which is then displayed on an LCD screen. The receiver module is kept in the doctor’s chamber to continuously display the patient’s body temperature wirelessly.

This project can be further enhanced by sensing and displaying other vital statistics of a patient like blood pressure, pulse rate etc. Another feature can be added where a warning signal is generated if the parameters cross the safe limit.

Additional Information:

• Item Code: 17

Sinusoidal PWM has been a very popular technique used in AC motor control. This relatively unsophisticated method employs a triangular carrier wave modulated by a sine wave and the points of intersection determine the switching points of the power devices in the inverter.

However, this method is unable to make full use of the inverter’s supply voltage and the asymmetrical nature of the PWM switching characteristics produces relatively high harmonic distortion in the supply.

Space Vector PWM (SVPWM) is a more sophisticated technique for generating a fundamental sine wave that provides a higher voltage to the motor and lower total harmonic distortion (THD). It is also compatible for use in vector control (Field orientation) of AC motors.

This abstract describes the theory of SVPWM and the project shall be made using a programmed microcontroller of 8051 family duly interfaced to 3 phase six pulse inverter with 6 no’s MOSFET from DC derived from a single phase mains or 3 phase, 50 Hz supply. The load shall be a three phase 50 Hz 440volt 0.5 HP motor. Alternatively a star lamp load can be used in place of motor to view the waveform only.

Further this project can be enhanced by using IGBT instead of MOSFET for higher voltage power operations. Speed control of the motor can also be achieved by V/F method.

NOTE: A 3 phase induction motor of 0.5HP or 1HP is required to see the output. Motor is not supplied along with the kit. However, it can be purchased at extra cost

Additional Information:

• Item Code: 240

The project is designed for reading electrical energy consumed in units and in rupees to display on an LCD screen to the user. This data is also provided to the electrical department using GSM technology for billing purposes. Owing to high electricity cost these days it becomes necessary for the consumer to know as to how much electricity is consumed to control electricity bill within his budget.

In this proposed system, the consumer will get his energy consumption data on real time basis on a LCD display. The same data is sent through GSM modem to the electricity department via SMS. A microcontroller of 8051 family is interfaced to the energy meter to get the Watt Hour pulses.

The microcontroller then processes these pulses according the program written in it, to calculate the units consumed and cost involved. Further it gives command to the SIM loaded GSM modem for sending the data to the electricity department via SMS.

Further this project can be enhanced by to control the electrical appliances remotely via SMS. Also, the electricity department can send the monthly bill amount over SMS to the receiving unit for consumer information.

Additional Information:

• Item Code: 147

The main objective of this project is to develop a home automation system with a touch screen based control panel.

As technology is advancing so houses are also getting smarter. Modern houses are gradually shifting from conventional switches to centralized control system, involving touch screen switches. Presently, conventional wall switches located in different parts of the house makes it difficult for the user to go near them to operate.

Even more it becomes more difficult for the elderly or physically handicapped people to do so. Remote controlled home automation system provides a simpler solution with touch screen technology. Touch screen control panels are also designed for commercial, industrial and medical systems.

In order to achieve this, a touch panel is interfaced to the microcontroller on transmitter side which sends ON/OFF commands to the receiver where loads are connected. By touching the specified portion on the touch screen panel, the loads can be turned ON/OFF remotely through wireless technology.

The microcontroller used here is of 8051 family. The loads are interfaced to the microcontroller using opto-isolators and triacs.

Further the project can be enhanced by using GSM modem interfaced to the control unit. Using GSM modem, the user can control home appliances by sending an SMS. Advantage of using this technology is that there is not range limitation when compared to RF technology.

Additional Information:

• Item Code: 238

In the field of agriculture, use of proper method of irrigation is important because the main reason is the lack of rains & scarcity of land reservoir water. The continuous extraction of water from earth is reducing the water level due to which lot of land is coming slowly in the zones of un-irrigated land.

Another very important reason of this is due to unplanned use of water due to which a significant amount of water goes waste. For this purpose; we use this automatic plant irrigation system. The system derives power from solar energy through photo-voltaic cells. Hence, dependency on erratic commercial power is not required.

In this project we use solar energy which is used to operate the irrigation pump. The circuit comprises of sensor parts built using op-amp IC. Op-amp’s are configured here as a comparator. Two stiff copper wires are inserted in the soil to sense whether the soil is wet or dry.

A microcontroller is used to control the whole system by monitoring the sensors and when sensors sense dry condition of soil, then the microcontroller will send command to relay driver IC the contacts of which are used to switch on the motor and it will switch off the motor when the soil is in wet condition.

The microcontroller does the above job as it receives the signal from the sensors through the output of the comparator, and these signals operate under the control of software which is stored in ROM of the microcontroller. The condition of the pump i.e., ON/OFF is displayed on a 16X2 LCD which is interfaced to the microcontroller.

Further the project can be enhanced by interfacing it with a GSM modem to gain control over the switching operation of the motor.

Additional Information:

• Item Code: 250

The aim of this project is synchronization of multiple motors using wireless technology. This project uses radio frequency to synchronize motor speeds. This is applicable to many industries like textile mills, steel plants, paper plants wherein all the motors used on conveyor are desired to be synchronized.

For example, in textile mills where multiple motors work simultaneously on a conveyor belt to draw clothes, it is essential that all the motors there should run at same speed, so that balanced tension is achieved to avoid clothes getting damaged.

In this project motors are wirelessly synchronized to make the differential speed error among multiple motors to zero. One motor acts as transmitter and all the rest as receivers. Thus, if a particular speed is set in the transmitter then all other motors speed would be matched to the same speed of the main motor. The mode of communication is radio frequency.

BLDC motors used operate on the basis of PWM control. Each motor has a closed loop feedback mechanism providing RPM reference by a shaft mounted IR sensor arrangement whose output is fed to the controller in the circuit. A display unit displays the full speed and one can enter the desired percentage with help of a keypad to obtain the required speed for all the motors.

The pulse width output from the microcontroller would be automatically adjusted to maintain the DC power to the motor such that the entered speed percentage matches the running RPM. The above operation is carried out by using one opto isolator and a MOSFET for driving the BLDC motor duly interfaced from the microcontroller.

In various stages of operations motors have to rotate at different speeds, so if we change the speed in transmitting motor then rest of the motors are adjusted accordingly. The whole operation is made simple by using this technology. Manpower and time is also saved in this system.

The future works include giving intelligence to the whole system like if any of the motor senses any fault, the whole system will shutdown.

Additional Information:

• Item Code: 231

The objective of this project is electrical load control in hazardous industrial environment with touch screen based switching system. Conventional switches produce sparks which is potentially dangerous for industries where inflammable gases are present.

In such a scenario it is always advisable to go for a control system involving touch screen based switches. Owners familiar with the icon system appreciate touch screens that make industrial load control user friendly. This kind of system makes operations simpler and thus reduces errors.

In order to achieve this, a touch screen panel is interfaced to the microcontroller. By touching a specific portion of this module the loads can be turned ON/OFF. The microcontroller used here is of 8051 family. This kind of technology gives control over various loads thus providing comfort, security and efficiency for the users.

Further the project can be enhanced by using RF technology. A touch panel is connected to a RF transmitter. So, instead of using a standalone control unit, by using RF technology the switching of the loads can be done wirelessly.

Additional Information:

• Item Code: 235

The project is designed to detect vehicle movement on highways to switch ON only a block of street lights ahead of it (vehicle), and to switch OFF the trailing lights to save energy. During night all the lights on the highway remain ON for the vehicles, but lots of energy is wasted when there is no vehicle movement.

This proposed system provides a solution for energy saving. This is achieved by sensing an approaching vehicle and then switches ON a block of street lights ahead of the vehicle. As the vehicle passes by, the trailing lights switch OFF automatically. Thus, we save a lot of energy. So when there are no vehicles on the highway, then all the lights remain OFF.

However, there is another mode of operation where instead of switching OFF the lights completely, they remain ON with 10% of the maximum intensity of the light. As the vehicle approaches, the block of street lights switch to 100% intensity and then as the vehicle passes by, the trailing lights revert back to 10% intensity again.

High intensity discharge lamp (HID) presently used for urban street light are based on principle of gas discharge, thus the intensity is not controllable by any voltage reduction. White Light Emitting Diode (LED) based lamps are soon replacing the HID lamps in street light. Intensity control is also possible by Pulse Width Modulation (PWM) generated by the microcontroller.

Sensors used on either side of the road senses vehicle movement and sends logic commands to microcontroller to switch ON/OFF the LEDs. Thus this way of dynamically changing intensity ON/OFF helps in saving a lot of energy. The project uses an 8051 series microcontroller.

Further the project can be enhanced by using appropriate sensors for detecting the failed street light and then sending an SMS to the control department via GSM modem for appropriate action.

Additional Information:

• Item Code: 36

The project is designed to develop a density based dynamic traffic signal system. The signal timing changes automatically on sensing the traffic density at the junction. Traffic congestion is a severe problem in many major cities across the world and it has become a nightmare for the commuters in these cities.

Conventional traffic light system is based on fixed time concept allotted to each side of the junction which cannot be varied as per varying traffic density. Junction timings allotted are fixed. Sometimes higher traffic density at one side of the junction demands longer green time as compared to standard allotted time.

The proposed system using a microcontroller of 8051 family duly interfaced with sensors, changes the junction timing automatically to accommodate movement of vehicles smoothly avoiding unnecessary waiting time at the junction.

The sensors used in this project are IR and photodiodes are in line of sight configuration across the loads to detect the density at the traffic signal. The density of the vehicles is measured in three zones i.e., low, medium, high based on which timings are allotted accordingly.

Further the project can be enhanced by synchronizing all the traffic junctions in the city by establishing a network among them. The network can be wired or wireless. This synchronization will greatly help in reducing traffic congestion.

Additional Information:

• Item Code: 24

The project is designed to control AC power to a load by using firing angle control of thyristor. Efficiency of such power control is very high compared to any other method.

The project uses zero crossing point of the waveform which is detected by a comparator whose output is then fed to the microcontroller. The microcontroller provides required delayed triggering control to a pair of SCRs through opto isolator interface.

Finally the power is applied to the load through the SCRs in series. This project uses a microcontroller from 8051 family which is interfaced through a push button switch for increasing or decreasing the AC power to the load.

A lamp is used in place of an induction motor whose varying intensity demonstrates the varying power to the motor. The varying power results in variation in speed of the motor.

The project can be further enhanced by using direct 230 volt supply instead of 12 volt AC to the bridge rectifier for achieving higher voltage control for charging number of batteries in series.

Additional Information:

• Item Code: 6

White Light Emitting Diodes (LED) replaces HID lamps in street lighting system to include dimming feature. A microcontroller of 8051 family is used to control the intensity by developing pulse width modulated signals that drives a MOSFET to switch the LEDs according to achieve desired operation.

In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high. Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs.

This system is build to overcome the present day drawbacks of HID lamps. This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement.

LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps.

A cluster of LEDs are used to form a street light. The microcontroller contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated.

The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also  decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated.

This concept in future can be enhanced by integrating it with the solar panel, which converts the solar intensity into corresponding voltage, and this energy is used to feed up the highway lights.

White Light Emitting Diodes (LED) replaces HID lamps in street lighting system to include dimming feature. A microcontroller of 8051 family is used to control the intensity by developing pulse width modulated signals that drives a MOSFET to switch the LEDs according to achieve desired operation.

In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high. Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs.

This system is build to overcome the present day drawbacks of HID lamps. This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement.

LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps.

A cluster of LEDs are used to form a street light. The microcontroller contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated.

The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also  decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated.

This concept in future can be enhanced by integrating it with the solar panel, which converts the solar intensity into corresponding voltage, and this energy is used to feed up the highway lights.

White Light Emitting Diodes (LED) replaces HID lamps in street lighting system to include dimming feature. A microcontroller of 8051 family is used to control the intensity by developing pulse width modulated signals that drives a MOSFET to switch the LEDs according to achieve desired operation.

In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high. Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs.

This system is build to overcome the present day drawbacks of HID lamps. This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement.

LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps.

A cluster of LEDs are used to form a street light. The microcontroller contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated.

The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also  decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated.

This concept in future can be enhanced by integrating it with the solar panel, which converts the solar intensity into corresponding voltage, and this energy is used to feed up the highway lights.

The project is designed to develop a pick n place robotic vehicle with a soft catching gripper. For example, it can safely handle a bomb very carefully to avoid explosion while catching. The robotic vehicle is RF controlled for remote operation.

At the transmitting end using push buttons, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end four motors are interfaced to the microcontroller where two of them are used for arm and gripper movement of the robot while the other two are for the body movement.

The RF transmitter acts as a RF remote control that has the advantage of adequate range (up to 200 meters) with proper antenna, while the receiver decodes before feeding it to another microcontroller to drive DC motors via motor driver IC for necessary work. The main advantage of this robot is its soft catching arm that is designed to avoid extra pressure on the suspected object for safety reasons.

 Further the project can be enhanced by interfacing it with a wireless camera so that the person controlling it can view operation of the arm and gripper remotely.

Additional Information:

• Item Code: 151

The project is designed to get a display of all three conditions of power factor ie  linear, lagging and leading choosing  appropriate load. Power factor is defined as the ratio of real power to apparent power.

In this proposed system the time lag between the zero voltage pulse and zero current pulse duly generated by suitable operational amplifier circuits in comparator mode are fed to two interrupt pins of the microcontroller.  The microcontroller used is of 8051 family. It displays the time lag between the current and voltage on an LCD.

The program takes over to actuate appropriate number of anti-parallel SCR’s at its output in series with either an inductor or a lamp or shunt capacitors into the load circuit to derive  the power factor of each type of load  for display.

Further this project can be enhanced in future  by using delayed firing angle control method for  each connected load through thyristors for achieving precise power factor.

The project is designed to provide uninterrupted AC mains supply i.e., 230 volt to a single phase load. This is achieved by automatic changeover of the load from the missing phase to the next available phase in a 3 phase system.

It is often noticed that power interruption in distribution system is about 70% for single phase faults while other two phases are in normal condition. Thus, in any commercial or domestic power supply system where 3 phase is available, it is advisable to have an automatic changeover system for uninterrupted power to critical loads in the event of missing phase.

In this system auto selection is achieved by using a set of relays interconnected in such a way that if one of the relay feeding to the load remains energized always. Under the phase failure condition the corresponding step down transformer secondary delivers zero voltage which is duly rectified to DC and then fed to the logic gates comprising of AND & OR to switch on the next relay that delivers the power to the load.

It also has a provision of connecting to an inverter source which delivers uninterrupted power to the load incase all the 3 phases go missing. The project is supplied with three transformers connected to the 3 phases supply.

Further the project can be enhanced by incorporating power semiconductor devices such as thyristors/IGBTs for instantaneous changeover to the next available phase. This overcomes the drawback of the changeover time generally witnessed by relay switching operations.

Additional Information:

• Item Code: 173

The main objective of this project is to send a message in the event of energy meter being tampered. The alert message is sent via GSM modem to the concerned authority. As electricity consumption is increasing, so is the attempt for tampering the energy meter.

Identifying a tampered meter is only possible when the electricity board’s authority manually checks it, which is a time consuming and costly method. This proposed system is a possible solution to detect meter tampering.

Energy meter is integrated with the system in such a way that if anybody opens the cover of the meter, an IR sensing arrangement sends a command to the microcontroller (8051 family).

Microcontroller then senses a change in the logical input from IR sensor and gives command to the GSM modem to send an SMS to the designated mobile phone number stored in the controller’s memory. This information also gets displayed on an LCD.

The project in future can be enhanced by having an added feature of disconnecting the supply to the load by electricity department through SMS in case of any tampering of energy meter.

Additional Information:

• Item Code: 40

The main objective of this project is to detect rising water level in a river at a reasonable distance from the rail track/ roadways and intimate that to the respective authorities through SMS, to take appropriate action.

For example, railways face major challenges in prior detection of possible flash flood along the track, which might cause accidents. In this proposed system, water level rise is sensed at a considerable distance from the tracks and necessary action is initiated. Thus, many lives and properties can be saved by this warning system.

In this project a water sensing arrangement is made which is interfaced to a programmable microcontroller. During flash flood conditions if the device senses a rise in water level beyond a danger mark at a considerable distance from railway tracks, it will alert the station master via SMS. Hence, train services of that route can be detained to prevent accidents. An LCD display is also attached to indicate the status.

This project in future can be enhanced by adding a feature of changing the stored phone number by the user as per his requirement. This can be achieved by interfacing an EEPROM along with a keypad to the microcontroller for storing the desired contact number.

Additional Information:

• Item Code: 157

The project is designed to detect a crack, if any, on the railway track and alert the respective railway department. This is to avoid rail accidents by using latest communication technologies. In this project GSM communication protocols are used to convey the message of crack detection via SMS.

This project uses a microcontroller from 8051 family. The primary objective of this project is to detect the crack in the railway track and alert the nearby station through effective and highly reliable communication mode.

To demonstrate this project, two rails forming the part of a track are made using a pair of wire which is connected with a detachable jumper in between each wire/track. Removing the detachable jumper creates a fault in the respective track; otherwise it is generally shorted by the jumper wire to simulate healthy track condition.

Removing the jumpers result in driving transistors delivering a different logic to the controller. The program thereafter takes over to send an SMS through GSM modem interfaced through a level shifter IC to the microcontroller. An LCD is also interfaced to the MC to display the status of GSM and track condition.

Thus the proposed model is designed to recognize the cracks in the railway tracks and provides instant information to the concerned railway authorities. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier.

The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.

Additional Information:

• Item Code: 190

The aim of this project is to use wireless technology to intimate the owner of the vehicle about any unauthorized entry. This is done by sending an auto-generated SMS to the owner. An added advantage of this project is that the owner can send back the SMS which will disable the ignition of the vehicle.

As the crime rate is going up, security system for vehicles is extremely essential. In this proposed system if someone tries to steal the car, the microcontroller gets an interrupt through a switch mechanism connected to the system and commands the GSM modem to send an SMS.

The owner receives the SMS that his car is stolen. He can then send back an SMS to the GSM modem to ‘stop the engine’. The GSM modem interfaced to the microcontroller, receives the message, the output of which activates a mechanism that disables the ignition of the vehicle resulting in stopping the vehicle. The project uses a lamp to indicate the engine ON/OFF condition.

Thus, owner of the vehicle from anywhere can switch off ignition of his car. This project can be further enhanced by integrating a GPS system, which will give exact position of the vehicle in terms of its latitude and longitude. Further this data can be sent to the owner via SMS who can enter this value on Google maps to get the exact location of the vehicle.

Additional Information:

• Item Code: 154

The aim of this project is synchronization of multiple motors using wireless technology. This project uses radio frequency to synchronize motor speeds. This is applicable to many industries like textile mills, steel plants, and paper plants wherein all the motors used on conveyor are desired to be synchronized. 

For example, in textile mills where multiple motors work simultaneously on a conveyor belt to draw clothes, it is essential that all the motors there should run at same speed, so that balanced tension is achieved to avoid clothes getting damaged. In this project motors are wirelessly synchronized to make the differential speed error among multiple motors to zero.  

One motor acts as transmitter and all the rest as receivers. Thus, if a particular speed is set in the transmitter then all other motors speed would be matched to the same speed of the main motor. The mode of communication is radio frequency. BLDC motors used operate on the basis of PWM control.

Each motor has a closed loop feedback mechanism providing RPM reference by a shaft mounted IR sensor arrangement whose output is fed to the controller in the circuit. A display unit displays the full speed and one can enter the desired percentage with help of a keypad to obtain the required speed for all the motors.

The pulse width output from the microcontroller would be automatically adjusted to maintain the DC power to the motor such that the entered speed percentage matches the running RPM. The above operation is carried out by using one opto isolator and a MOSFET for driving the BLDC motor duly interfaced from the microcontroller.

In various stages of operations motors have to rotate at different speeds, so if we change the speed in transmitting motor then rest of the motors are adjusted accordingly. The whole operation is made simple by using this technology. Manpower and time is also saved in this system.

The future works include giving intelligence to the whole system like if any of the motor senses any fault, the whole system will shutdown.

Additional Information:

• Item Code: 113

The aim of this project is to use wireless technology to intimate the owner of the vehicle about any unauthorized entry. This is done by sending an auto-generated SMS to the owner. An added advantage of this project is that the owner can send back the SMS which will disable the ignition of the vehicle.

As the crime rate is going up, security system for vehicles is extremely essential. In this proposed system if someone tries to steal the car, the microcontroller gets an interrupt through a switch mechanism connected to the system and commands the GSM modem to send an SMS. T

he owner receives the SMS that his car is stolen. He can then send back an SMS to the GSM modem to ‘stop the engine’. The GSM modem interfaced to the microcontroller, receives the message, the output of which activates a mechanism that disables the ignition of the vehicle resulting in stopping the vehicle. The project uses a lamp to indicate the engine ON/OFF condition.

Thus, owner of the vehicle from anywhere can switch off ignition of his car. This project can be further enhanced by integrating a GPS system, which will give exact position of the vehicle in terms of its latitude and longitude. Further this data can be sent to the owner via SMS who can enter this value on Google maps to get the exact location of the vehicle

Additional Information:

• Item Code: PIC106

This project is a PC based communication tool in office for data(text) transmission to a individual or multiple users using radio frequency technology.

In most of the offices, if an employer has to convey a message to a particular employee or a group of employees, he has to call them personally or send the message through a middleman. But there is a possibility of message to be misinterpreted and there is wastage of time.

In this proposed system, employer in an office will have a transmission module while the employees will have one receiver module each. If the employer wants to convey any message to employees or any particular employee, he can send it through the transmitting module which is connected to the PC.

Receiver section consists of a module which receives the data and feeds to the microcontroller that displays the message on an LCD. A buzzer is also interfaced to the microcontroller on the receiver side, which gives intimation that data is received. Adapting this technique one can eliminate the need of a third person for communication, so that the exact message is delivered to the desired person.

This project in future can be enhanced, by adding a feature of two way communication between the employer and the employee(s).

NOTE: The project works only on operating systems having hyper terminal (E.g. Windows XP). The computer must have a RS232 serial port.

Additional Information:

• Item Code: 233

The project is designed to develop a fire fighting robot using RF technology for remote operation. The robotic vehicle is loaded with water tanker and a pump which is controlled over wireless communication to throw water. An 8051 series of microcontroller is used for the desired operation.

At the transmitting end using push buttons, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc. At the receiving end three motors are interfaced to the microcontroller where two of them are used for the movement of the vehicle and the remaining one to position the arm of the robot.

The RF transmitter acts as a RF remote control that has the advantage of adequate range (up to 200 meters) with proper antenna, while the receiver decodes before feeding it to another microcontroller to drive DC motors via motor driver IC for necessary work.

A water tank along with water pump is mounted on the robot body and its operation is carried out from the microcontroller output through appropriate signal from the transmitting end. The whole operation is controlled by an 8051 series microcontroller. A motor driver IC is interfaced to the microcontroller through which the controller drives the motors.

Further the project can be enhanced by interfacing it with a wireless camera so that the person controlling it can view operation of the robot remotely on a screen.

Additional Information:

• Item Code: 152

The main objective of the project is to develop a GSM based energy meter reading system and load control through SMS. Electricity department sends employees to take meter reading every month, which is an expensive and time consuming job.

The proposed project provides a convenient and efficient method to avoid this problem. The electricity department and the user can get the readings of the energy meter of consumers via SMS. The loads can also be controlled by the user of this system via SMS using this project.

A microcontroller input is effectively interfaced to a digital energy meter that takes the reading from the energy meter and displays the same on an LCD. The reading of the energy meter is also sent to the control room by an SMS via SIM loaded GSM modem.

This GSM modem can also receive commands from the cell phone to control the owner’s electrical loads. It uses a standard digital energy meter that delivers output pulses to the microcontroller to perform counting for necessary action. On receiving command it can switch ON/OFF the loads.

Further this project can be interfaced with a non volatile memory IC like EEPROM along with a keypad so that the user the change the mobile number as per the requirement.

Additional Information:

• Item Code: PIC114

This project is designed to demonstrate the technology used in metro train movement which are used in most of the developed countries. This train is equipped with a controller, that enables the automatic running of the train from one station to another.

This proposed system is an autonomous train and it eliminates the need of any driver. Thus, any human error is ruled out. In this project microcontroller from 8051 family has been used as CPU. Whenever the train arrives at the station it stops automatically, as sensed by an IR sensor.

Then the door is opens automatically so that the passengers can go inside the train. The door then closes after a prescribed time set in the controller by the program. It is also equipped with a passenger counting section, which counts the number of passengers leaving and entering the train. The door closes when it reaches maximum occupancy level irrespective of time allotted for the door to remain open.

The passenger counts are displayed on a seven segment display interfaced to the microcontroller. The movement of the train is controlled by a motor driver IC interfaced to the microcontroller. The train incorporates a buzzer to alert the passengers before closing the door and also warn them before staring. As the train reaches the destination the process repeats thus achieving the desired operation.

Further the project can be enhanced by making this system more advanced by displaying the status of the train over an LCD screen for the convenience of the passengers. The status of the train consists of the parameters like, expected arrival and departure time etc.

Additional Information:

• Item Code: 253

The main objective of the project is to develop a GSM based energy meter reading system and load control through SMS. Electricity department sends employees to take meter reading every month, which is an expensive and time consuming job. The proposed project provides a convenient and efficient method to avoid this problem.

The electricity department and the user can get the readings of the energy meter of consumers via SMS. The loads can also be controlled by the user of this system via SMS using this project.

A microcontroller input is effectively interfaced to a digital energy meter that takes the reading from the energy meter and displays the same on an LCD. The reading of the energy meter is also sent to the control room by an SMS via SIM loaded GSM modem.

This GSM modem can also receive commands from the cell phone to control the owner’s electrical loads. It uses a standard digital energy meter that delivers output pulses to the microcontroller to perform counting for necessary action. On receiving command it can switch ON/OFF the loads.

Further this project can be interfaced with a non volatile memory IC like EEPROM along with a keypad so that the user the change the mobile number as per the requirement.

Additional Information:

• Item Code: 180

This is a project used for displaying messages in scrolling format on an alphanumeric LED display. This type of scrolling system is applicable in public areas, on transport vehicles, advertisements, railway platforms, banks, hotels, nightclubs etc.

Here a DC voltage of 5V is drawn from power supply voltage regulator is fed to micro controller of 8051 family. The circuit uses 16 segment alpha numeric displays to show 16 characters at a time.

More over, programming has been done in micro controller to make the characters move in a beautiful manner. It displays 16 different messages to depict different occasions, which can be selected by the user through a slide switches. Using of alphanumeric displays for above purpose programming burden is reduced and becomes highly cost effective.

Further the project can be enhanced by interfacing it with a GSM modem. The user can send the message to the control unit via SMS and the data gets displayed.

Additional Information:

• Item Code: 223

The main objective of this project is to develop a device that controls the home appliances through SMS with integrated acknowledgement feature. Unlike the conventional system present in houses, where one has to manually switch on and off the appliances.

The proposed system allows the owner of the house to control the appliances by just sending an SMS to the device and then also receiving the status of the same via return SMS.

This is extremely convenient for users as they can control their house loads any time and from any place in the world. An example of how this technology can make our lives better is that when a person is travelling and wishes that the moment he enters his room, it should be cool enough to make him comfortable.

In such a case, with the help of this system, he can switch on the AC while he is travelling. An SMS is sent to the GSM modem which is interfaced to the microcontroller. The modem receives the message and sends the command to the microcontroller which processes this and initiates a mechanism that activates a relay to control the corresponding home appliance.

An added feature of this system is that the owner can get the status of all the loads (whether on or off) in the house by sending a status query SMS to the base station. All the status can also be seen on an LCD display interfaced to the microcontroller.

Additional Information:

• Item Code: 159

The project is designed to achieve control over the railway level crossing gate through SMS sent by the station master or driver. Opening and closing of railway level crossing involves manpower, which could be often erroneous leading to accidents.

The proposed system rules out the need of any human involvement at the railway level crossing. This system involves opening and closing of the level crossing gate with help of an SMS.

A GSM modem is interfaced with the system. When the driver or station master sends an SMS “close” (when the train is approaching at the level crossing) to the modem then the microcontroller interfaced to the modem sends an output signal which activates a mechanism to switch on the motor to close the gate.

To open the gate, another SMS “open” needs to be sent for the microcontroller to open the gate with help of motor driver IC. In this project we use a microcontroller of 8051 family, and the input to it is a GSM modem which receives the SMS from the user.

The output to microcontroller is given to a motor through a motor driver IC for required operation. The status, whether the gate is open / close is displayed on an LCD display interfaced to the microcontroller.

Further the project can be enhanced by sending an acknowledgement to the sender about the status of the gate via SMS.

Additional Information:

• Item Code: 146

The project is designed to develop a device to increase the life of incandescent lamps. Incandescent lamps exhibit very low resistance in cold condition due to which it draws high current while switched ON, resulting in fast failure.

Random switching of lamps may switch the load at peak supply voltage. When such switching occurs while the lamp is having low resistance (cold condition) then the current further shoots up (at the time of peak supply voltage switch ON) leading to premature failure of the lamp.

The proposed project provides a solution by engaging a TRIAC in such a way that the switch ON time is precisely controlled by exactly firing it after detecting the zero cross point of the waveform of supply voltage. This would result in current waveform rising from zero at the time of switch to full value, thereby increasing the life of the lamp.

The project is having comparator which is used for ZVS output. The ZVS (zero voltage switching) is given as reference interrupt to the microcontroller of 8051 family. A push button is used for switching ON the lamp at zero voltage of the supply voltage so the lamp draws current gradually from zero to full value.

Further the project can be enhanced by using three TRIACS, one in each phase for three phase load switching.

Additional Information:

• Item Code: 7

The project is designed to drive an induction motor for the required application in forward and reverse directions using wireless technology. For an example, an exhaust fan can be used in both the directions to fresh air in and throw hot air out. This can be used in case of conventional exhaust a fan that rotates in one direction only.

This proposed system demonstrates a technology to rotate a squril cage induction motor in both clockwise and counter clockwise direction. It also has the provision to control the direction of the motor using a TV remote.

When a TV remote button is pressed, it sends an IR signal in RC5 code which is received by a IR receiver called TSOP-1738. Output from the TSOP is fed to a microcontroller of 8051 family which is interfaced to a relay driver IC.

Thereafter, the relay switching is done in by-stable mode for an split-phase induction motor to rotate in forward and reverse directions.

In future, it can further be enhanced by controlling the operation of induction motor using thyristors in place of relays for noise free operation.

Note: An induction motor is used to observe the output of the project. Motor is not supplied along with the kit. However, it can be purchased on extra cost.

The project is designed to drive an induction motor for the required application in forward and reverse directions using wireless technology. For an example, an exhaust fan can be used in both the directions to fresh air in and throw hot air out. This can be used in case of conventional exhaust a fan that rotates in one direction only.

This proposed system demonstrates a technology to rotate a squril cage induction motor in both clockwise and counter clockwise direction. It also has the provision to control the direction of the motor using a TV remote.

When a TV remote button is pressed, it sends an IR signal in RC5 code which is received by a IR receiver called TSOP-1738. Output from the TSOP is fed to a microcontroller of 8051 family which is interfaced to a relay driver IC.

Thereafter, the relay switching is done in by-stable mode for an split-phase induction motor to rotate in forward and reverse directions.

In future, it can further be enhanced by controlling the operation of induction motor using thyristors in place of relays for noise free operation.

Note: An induction motor is used to observe the output of the project. Motor is not supplied along with the kit. However, it can be purchased on extra cost.

Additional Information:

• Item Code: 14