28-03-2015, 11:36 AM
i want to know about atmega 16 car parking code c
i want to know about simulation with atmega 16 car parking code c
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atmega 16 car parking code c
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i want to know about atmega 16 car parking code c
i want to know about simulation with atmega 16 car parking code c
31-03-2017, 04:22 PM
The robot line follower is a mobile machine that can detect and follow the line drawn on the ground. Generally, the route is predefined and may be visible as a black line on a white surface with a high contrast of colour or it may be invisible as a magnetic field. Therefore, this type of robot must detect the line with its infrared (IR) sensors that are installed under the robot. The robot line follower is a useful robot that is used in warehouses, industries and stores, etc., where it follows a dedicated path.
In this project, we will learn how to design a robot line follower with the AVR ATmega16 microcontroller using the analog IR sensor. This robot is an automatic robot, that is, no manual control is needed. The robot automatically follows a line without any deviation from the line. The robot changes its direction in case it deviates from the line. Generally, the line is of black color on white surface or white line on black surface. To detect the color black and white, we will use the IR sensor because the white surface reflects the IR rays and the black surface absorbs the IR rays. In this way, the output of the IR sensor is immersed in black and white surface. In our case, we will use a black line on a white surface.
Here, we are going to use three analog IR sensors. All three sensors will be placed on the front of the robot and all will be pointing down. One sensor will be placed above the black line and the other two will be to the left and right of the central sensor. The output of the IR sensor changes as the sensors move from the white surface to the black surface or from the black surface to the white surface and this change will be detected by the microcontroller. But the outputs of the three analog IR sensors are analog in nature, so these signals can not be processed directly by the microcontroller. To do this, we will use the ADC of the ATmega16 microcontroller to convert the analog signals into digital values. After converting the analog signals from analog IR sensors to digital values, the ATmega16 microcontroller will compare the values of the sensors with a reference value (3V in our case) to know the position of the sensors.
When the position of the middle IR sensor is above the black line, the ATmega16 microcontroller will send the control signal forward to the robot's DC motor controller (L293D) to move the robot forward and when the left sensor is above The ATmega16 microcontroller will send the left control signal to the robot motor controller (L293D) of the robot to move the robot in the left direction and when the right sensor is above the black line, the ATmega16 microcontroller will send the signal Right control to The robot's DC motor controller (L293D) to move the robot in the right direction. Previous processes of ADC conversions, sensor output comparison, and robot control continue. In this way, the robot follows the black line.
In this project, we will learn how to design a robot line follower with the AVR ATmega16 microcontroller using the analog IR sensor. This robot is an automatic robot, that is, no manual control is needed. The robot automatically follows a line without any deviation from the line. The robot changes its direction in case it deviates from the line. Generally, the line is of black color on white surface or white line on black surface. To detect the color black and white, we will use the IR sensor because the white surface reflects the IR rays and the black surface absorbs the IR rays. In this way, the output of the IR sensor is immersed in black and white surface. In our case, we will use a black line on a white surface.
Here, we are going to use three analog IR sensors. All three sensors will be placed on the front of the robot and all will be pointing down. One sensor will be placed above the black line and the other two will be to the left and right of the central sensor. The output of the IR sensor changes as the sensors move from the white surface to the black surface or from the black surface to the white surface and this change will be detected by the microcontroller. But the outputs of the three analog IR sensors are analog in nature, so these signals can not be processed directly by the microcontroller. To do this, we will use the ADC of the ATmega16 microcontroller to convert the analog signals into digital values. After converting the analog signals from analog IR sensors to digital values, the ATmega16 microcontroller will compare the values of the sensors with a reference value (3V in our case) to know the position of the sensors.
When the position of the middle IR sensor is above the black line, the ATmega16 microcontroller will send the control signal forward to the robot's DC motor controller (L293D) to move the robot forward and when the left sensor is above The ATmega16 microcontroller will send the left control signal to the robot motor controller (L293D) of the robot to move the robot in the left direction and when the right sensor is above the black line, the ATmega16 microcontroller will send the signal Right control to The robot's DC motor controller (L293D) to move the robot in the right direction. Previous processes of ADC conversions, sensor output comparison, and robot control continue. In this way, the robot follows the black line.
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