Circuit Diagram for Sensors in Autonomous Robot system

As one proceed for the development of circuit design for the Autonomous Robot (AR) system, there needs to be proper sensor arrangement. So, in this article we will approach to the sensor circuit diagram. I used the circuit diagram as below

             In this circuit diagram, there are 5 sensors used. One sensor consists of an Tx-Rx pair ( Tx- Transmitter, Rx- Receiver) . It is easily differentiated from figure that one of these two diodes is a IR LED (IR- Infrared) while another one is a photodiode. I am really very sorry that I haven't used sign of photodiode in this figure ( photodiodes- D10, 9, 8, 7, 6).More specification of this circuit is given below.

 Resistor connected to IR LED - 220 Ohm

 Resistor connected to Photodiode- 10 Ohm

              The purpose for connecting low resistance for the IR LED is to increase brightness of LED, if, in opposite case a higher value resistance connected to LED, then there is more possibility of light with low brightness.

              In case of photodiode, it can work properly when we connect a resistor having value of 10K because of favourable conditions in the DC load line of the photodiode, in short, it becomes highly sensitive.

  Power Supply Requirement - 5V ( which can provide min. current of 500mA for driving the LED's)

Now comes the question of sensor position, So for approaching this issue; We must have to consider width of the line ( Which AR should follow). Let's consider width of a line is 30mm(3 cm). According to the logic for our programming which I have explained in the last article of Robotics

A grid solver Robot  One can create the logic.

        Very soon, I will explain with some case, how a sensor position in an AR  matters. That's enough for now. Wish you have great day!

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"IF YOU DON'T LIKE WHERE YOU ARE, THEN CHANGE IT; YOU ARE NOT A TREE"

                       - JIM ROHN 

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