Pic Based Ultrasonic Radar System: The pic based ultrasonic radar system is a system that could use for keep watching that areas, which are prohibited for human or animal access such as military areas or other purposes areas. In this terrorism world, the security is mandatory 24 hours of the day for every region or area and it is almost not possible through the man power because the man could show the negligence sometimes and this could also be costly. The alternate way, of keep watching the area or region is only an automatic system, which automatically provides the intimation about unidentified person or object in that prohibited area. Different companies are offering such type of security systems each one have different cost and characteristics. Here we have designed a system that is called a pic based ultrasonic radar system with help of microcontroller 18F452 belongs to a pic family, ultrasonic module, LCD display and servo motor. This system could be installed in any prohibited areas and this provides the security 24 hours of the day. This also tells the distance of the object in that prohibited areas with different angles. This is not so much expensive as compared the other security systems.
Block Diagram of the Pic Based Ultrasonic Radar System
Components List with Detail of the Pic Based Ultrasonic Radar System
Here are the components list with short detail of this system,
Transformer:In this pic based ultrasonic radar system, the transformer is used for connected this system directly to 220V ac. It steps down the 220V ac into 12V ac. It consists of two windings and works on the principle of mutual induction.
Bridge Rectifier:In this pic based ultrasonic radar system, the bridge rectifier is used for converting the ac voltages into dc voltages and it is connected at the output of transformer.
Blocking Diode: In this system, the transformer and bridge rectifier both are very essential components of this system. For saving these components the blocking diode is used in this system for blocking the reverse polarity current.
Voltage Regulator:In this pic based ultrasonic radar system, the voltage regulator is used for the regulating the dc voltages. It regulates the 12V dc to 5V dc for supplying the power to the all components of this system.
LCD Display:In this pic based ultrasonic radar system, the LCD display is used for displaying the unidentified person or object in that prohibited area. This displays the person or object with their respective angle and distance. It is powered up with 5V dc and is interfaced with microcontroller.
Ultrasonic Module:In this pic based ultrasonic radar system, the ultrasonic module is used for sending or receiving the intimation about unidentified person or object. This module consists of two ultrasonic sensors one is called ultrasonic transmitter and second one is called ultrasonic receiver. The ultrasonic transmitter sends the high frequency sound pulse and this pulse is received by the ultrasonic receiver when it is reflected after the collision of that object or person. It is powered up with 5V dc and it sends the sound pulse with the speed of approximately 341m/s in air.
Microcontroller Pic 18F452:In this pic based ultrasonic radar system, the pic microcontroller is basically used for the intelligent control of this system. It is 40 pins microcontroller and is programmed in c language with the help of mikro/c software. In this system, it is interfaced with ultrasonic module, servo motor, LCD display and buzzer. It is powered up with 5V dc through voltage regulator.
Servo Motor:In this pic based ultrasonic radar system, the ultrasonic module is mounted at servo motor therefore this motor is used for rotating the ultrasonic module. It rotates the ultrasonic module between 0 degree to 180 degrees. It is powered up with 5 or 6V PWM and is interfaced with microcontroller.
Buzzer:In this pic based ultrasonic radar system, the buzzer is used of giving the beep intimation sound to the operated person. It is also interfaced with microcontroller.
The Working Principle of the Pic Based Ultrasonic Radar System
This pic based ultrasonic radar system works on the principle of high frequency sound pulse. When these pulses are sending through the ultrasonic transmitter which is rotating from 0 degree to 180 degrees through the servo motor. These pulses are reflected after the collision of unidentified object or person, then these pulses are received by the ultrasonic receiver. After receiving these pulses the ultrasonic module gives the intimation or information signal to the microcontroller. Then the microcontroller check the status of that object or person means it measures the distance and angle of that one. After checking the angle and distance it gives the intimation signal to the LCD display which shows the distance and angle of that object or person, during this it also gives the logic high signal to the buzzer. Then the buzzer is switched on. By switched on this buzzer, the operated person can easily know about the unidentified person or object with their respective distance and angle. For the demonstration purposes, we can check this system by placing anything in front ultrasonic module when it is moving through the servo motor. Then it tells the distance and angle of that thing with giving beep through the buzzer.
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Applications and Advantages of the Pic Based Ultrasonic Radar System
- This pic based ultrasonic radar system could be used in military agencies for security purpose.
- This system could be used in that areas, where you want to don’t enter the unidentified person or objects.
- This system could be used in that industries for keep watching the industrial machine, where the human or any other object interference is not allowed.
- By using this system there is no chances of any negligence.
- This system is less expensive, more compact and more reliable.