Metal Detector Robotic Vehicle

Remote Metal Detector Robot Circuit Principle: 

The proposed framework comprises of transmitter and recipient circuit. The transmitter circuit transmits the directions required to work the robot. The recipient circuit gets these directions through RF and moves the robot as indicated by the got directions. A metal locator is interfaced to the controller in the recipient side. Hence at whatever point any metal is recognized the robot stops there and bell begins ringing.

Remote Metal Detector Robot Circuit Diagram:

Transmitter Circuit:

Receiver Circuit:

Circuit Components:

Hardware Components:

• AT89c51 microcontroller.
• RF encoder and decoder
• RF transmitter and receiver pair.
• Push buttons.
• Buzzer.
• Robot.
• L293d
• Rs 232 cable.

Software Components:

• Keil software
• Flash magic

Proteus  

Circuit Design of Metal Detector Robot using Microcontroller:

• 
  

The metal detection robot project can be divided into sections 1) Transmitter section, 2) Receiver section.

• 
  

The transmitter section consists of RF encoder, RF transmitter and Push buttons. RF encoder IC used here is HT12E.It is an 18 pin IC .The 4-bit binary input is applied to the decoder through the AD0, AD1, AD2, AD3 pins. The TE pin enables the transmission when it is low.A0-A7 are the address pins used for secured transmission. These pins are connected to ground in the transmitter circuit. The 4-bit data is transmitted to the RF transmitter parallelly. This is transmitted to the RF receiver serially. Input is given to the encoder through buttons. The RF pair operates with a frequency of 434 kHz.

• 
  

Receiver section consists of AT89c51 microcontroller, RF decoder, RF receiver, metal detector, buzzer, L293d IC and robot.

• 
  

The data received is applied to the RF decoder. The RF decoder used here is HT12D. Decoded inputs are connected port 2 of the microcontroller. The four data pins D0-D3 are connected to the Port P2.0 – P2.3.The decoded data is applied to the microcontroller which controls the movement of the robot. The buzzer is connected to the port 3.4 and this rings when any metal is detected in its path.

• 
  

 Metal detector is connected to the pin 3.2 of the microcontroller. Here in place of metal detector a push button is connected. Metal detector plays a main role in the circuit. This will have an oscillator inside it, which produces an alternating current that passes through the coil producing an alternating magnetic field. When any metal is present near the coil this induces magnetic field and thus it can be detected by using another coil which detects the change in the field.

Stimulation: