My aim is to produce a line follower robot with a bump sensor Essay

My aim is to produce a trace totaler automaton with a bump sensorwhich can reverse if it goes off course.Research disputation fol scummyer robots are most commonly produced totake fracture in competitions. The purpose of the line come afterer robot isto assume a line. The robot leave only follow a line that is blackagainst a white spineground or a white line against a black background.This is so that the sensors can distinguish a clear release inlight and so the robot can trace and follow the line. From my exploreI induct decided to use infrared guide emitters (phototransistors). Theyare fairly cheap but work relatively comfortably.To research into the project I was going to make I looked on the lucre to find other examples of the line follower robots. I found umpteen different variations and concentrated on the comp peerlessnts used. Ilooked into books and gathered information on how to assemble the roofy on the breadboard and researched on how the components work.I h ave researched on the type of amplifiers I could use for the linefollower. I will use an amplifier to increase the current as I amvictimization low voltage. I looked on the Maplins website (www.maplins.co.uk)and decided to use the LM386 because it is suitable for low voltageapplications and it is relatively cheap.Specification * The robot has to be able to follow straight lines, curves and turn around corners* It has to follow a black line that is against a white background* It must work apply one 9V battery* The robot must be able to reverse from either obstacle it hits* It should be able to function on its own (No help oneself needed to guide it)* It should be small and light, easy to trigger and tear up if veered off course.* Should indicate what direction it will turn extension of possible solutionsI could use 2 light dependant resistors to give away the difference inlight reflected from the line. It would react quite slowlyI could use two phototransistors which emit in frared beams onto theline. When less light is spy on the phototransistors there isless resistance thus allowing the motors to move.Sub-system developmentMy circuit had two designs combined. First is the line follower, whichdetects light and moves according to the line, and the other part is abump sensor which when it stumbles across an obstacle it reverses,this is ... ...llowed the light. I alike used an ammeter to check the current straits through the circuit. This confirmed that my circuit wasworking correctly. When I covered the phototransistors the there wasaround 0.4 A passing through. However, when I applied light onto thephototransistors (using an ordinary LED) I noticed that the study onthe ammeter was 8.6 A. this proves my theory that covering thephototransistors, it increases the resistance.Evaluation My circuit works well and follows my specification.The motors move forward when light is placed and it and slow down whenno light is present on the phototransistors.* Rob ot has the ability to move in s straight line, around curves and turn corners.* With the photo transistors it can follow a black line against a white background.* It works using a 9V battery* It has a relay which reverses the direction of the motors turning so it can move away from obstacles* It doesnt require anyone to move it or guide it using a remote control.* It is light and easy to move so when it goes of course I am able to put it back on the line* Has two LEDs which indicate what direction it is turning