Transformer Temperature Monitoring and Control Major Project

This Transformer Temperature Monitoring and Control project aims to continuously monitor the temperature of the transformer at the substation.

If the temperature increases beyond some critical limit, microcontroller will automatically start the cooling system for the substation.

The temperature sensor used in this project is NTC Thermistor which is interfaced with the LM3958 Comparator IC. It gives digital output to the microcontroller.

The microcontroller then takes the required action to turn on coolants through transistor driver. The relay driver circuit is basically current amplifier.

The Temperature Monitoring system is enabled with the alarm which is activated when the critical temperature value is sensed by the thermistor. In order to indicate the status of the operation, 16*2 LCD is used.

Software Tools:

1. Keil compiler
2. Embedded C Code
3. ucFlash

Hardware :

1. Microcontroller AT89S52.
2. Sensors- NTC Thermistor
3. LM358 Op-Amp Based Comparator
4. FAN Blower
5. RELAY
6. Buzzer
7. 16*2 LCD Display

Automatic Street Light Control System Project

This Automatic Street Light Control System project consists of LDR (Light Dependent Resistor) sensor interfaced with LM358 Comparator. When LDR surface is illuminated with light, its resistance decreases whereas when there is no light falling on its surface, its resistance is infinite.

Depending upon that condition, comparator input changes and hence corresponding output also changes. The output of the comparator is given to microcontroller which monitors input and depending upon that take proper action to switch on or off street lights

Street Light ControlĀ Software Tools:

  1. Keil compiler
  2. Embedded C
  3. Orcad.

Hardware Tools:

  1. Microcontroller AT89S52.
  2. LM358 Comparator
  3. Transistor Driver
  4. Relay

Wireless Petroleum Level Measurement Using Ultrasonic Digital Sensor

Liquid level indicator is a device meant to overcome the stress of opening reservoir or dipping rod into the tank for gauging the level of the liquid. The level indicator can be divided into three stages.

The sensing circuit, wireless transmitter & receiver, control circuitry. The sensing unit is isolated from the measurement & control circuitry.

The liquid level information is wirelessly transmitted which is then received at the receiver end. The level is shown on the LCD Interface.

The Petroleum Level Measurement system consists of ultrasonic digital sensors, Encoder IC, RF Transmitter, Decoder IC, RF Receiver, Microcontroller, LCD etc. The percentage of the levels is shown on the LCD Interface.

TRANSMITTER & RECEIVER

GSM based Vehicle Theft Intimation System

This GSM based Vehicle Theft Intimation System project aims at continuously monitors vehicle from some interrupt.

In case someone tries to steal the vehicle, micro controller will automatical the y shuts down the engine valve which is interfaced through relay driver ULN2003 IC. The relay driver circuit is basically current amplifier IC.

The Vehicle Theft Intimation System is enabled with the GSM Modem which sends SMS to the user mobile number which is stored in microcontoller memory.

SOFTWARE AND HARDWARE:

Software Tools:

1. Keil compiler
2. Embedded C Code
3. ucFlash

Hardware :

1. Microcontroller AT89S52.
2. Interrupt Switch
3. Current Driver ULN2003
4. RELAY

BLOCK DIAGRAM:

Metal Detector Embedded System Project

METAL DETECTOR

The main aim of this Metal Detector project is to detect the metal in the surroundings and alert the siren when the metal is found. This Embedded System project has the application in mines. People used to dig the ground to locate the mines underneath the ground. Using this metal detector, the mines can be found without digging.

The metal detector contains the metal detecting circuit, microcontroller and the buzzer. This metal detecting circuit comprises of RF oscillators and the operation of the circuit is based on a superheterodyning principle which is commonly used in superhet receivers. The output of the oscillator is a pulsating DC which is passed through a low-pass filter. It is then passed to the amplifier for amplification of the signal. For proper operation of the

The output of the oscillator is a pulsating DC which is passed through a low-pass filter. It is then passed to the amplifier for amplification of the signal. For proper operation of the circuit it is critical that frequencies of both the oscillators are the same so as to obtain zero beats in the absence of any metal in the near vicinity of the circuit. All these components are arranged on the single board.

Thus, when the user holds this circuit in his hand and move forward in search of a metal and when the metal is found, the output of the metal detecting circuit is given to the microcontroller. Thus, when the metal is found, the output of the metal detecting circuit changes and this change will be detected by the microcontroller. Thus, the microcontroller immediately alerts the siren.

Thus, when the metal is found, the output of the metal detecting circuit changes and this change will be detected by the microcontroller. Thus, the microcontroller immediately alerts the siren.

Software Tools:

1. Keil compiler
2. Orcad.

Hardware Tools:

1. Microcontroller AT89S52.
2. Metal detecting circuit
3. Buzzer

Block Diagram: