Robot Speed and Accuracy Using a Light and Touch Sensor

Student Experimenter

Researched by Boston P.
2004-05




PURPOSE


The purpose of this experiment was to determine the effect of various computer programs on a robot’s speed and accuracy.

I became interested in robots many years ago and now I want to know how they actually work.

The information gained from this experiment might help factory owners and managers who use robotic devices to understand that a robot’s software makes a difference in its performance.






HYPOTHESIS


My hypothesis was that the touch sensor would have more speed and accuracy than the light sensor would.
   
I based my hypothesis on what it said in World Book Encyclopedia 1992.  Most robots use touch sensors to know when to stop without smashing something or not going far enough.





                                           EXPERIMENT DESIGN

The constants in this study were:

-Task robot was given
-Stopwatch used
-Location of experiment

The manipulated variable was the various computer programs.

The responding variable was the time it took for the robots to do the tasks.

The responding variable was measured by timing the robot with a stopwatch.






MATE                       
                              
                           
                          
QUANTITY ITEM DESCRIPTION
 1
Light sensor
  1 
touch sensor
1 robot
 3
robotic programmings
1 stopwatch











PROCEDURES

1. Build robot using legos.
2. Equip robot with light sensor and the 5-step programming.
3. Make the robot do the task and time it with the stopwatch.
4. Record time it took to for robot to finish task.
5. Repeat step 2 using the 6-step programming.
6. Repeat steps 3-4.
7. Repeat step 1 using the 7-step programming.
8. Repeat steps 3-4.
9. Repeat step 2 using the touch sensor.
10. Repeat steps 3-8.
 


 RESULTS

The original purpose of this experiment was to find which type of programming would have better speed and accuracy.



The results of the experiment were that the light sensor did better than a touch sensor in both speed and accuracy.



S0ee the table and graph below.



 CONCLUSION

My hypothesis was that the touch sensor would have had more speed and accuracy than the light sensor could.


The results indicate that this hypothesis should be rejected.


Because of the results of this experiment, I wonder if I were to try using a different kind of sensor such as weight sensors or pressure sensors and see which one would be better than the light sensor?



If I were to conduct this project again I would use more tasks and use more than 2 different sensors.  Also I have an idea about using 2 robots instead of one.  I would have used both of them at the same time and tried to find which of them would be faster and I think that timing them this way would be more accurate.



RESEARCH REPORT


Introduction
I did this for my project because it could help all the factory owners and managers know what type of programming would be better to use for production.
History of robotics

Robots are mechanical objects that can do things that humans could not do.  The programmings that robots have are very much similar to human like intelligence.
 The robot idea came from the ancient Greek and Egyptian civilizations.   An inventor from the first century A.D. (Hero of Alexandria) invented a machine that would automatically open doors to a temple when a priest would light a torch or pull a switch in the altar.  In the late periods of the middle ages, the Renaissance, and the 17th & 18th centuries, interest in robot-like programming and mechanisms turned mostly to automations (devices that imitate human and animal appearance and activity but do no useful or helpful tasks).  During the 1950’s and the 1960’s, advances in the field’s of automation, robotics, and computer science led to the development of experimental robots that could imitate a large range of human-like activities, including self-controlled, self-regulated, and self-propelled movement (either on wheels or legs), the ability to sense and manipulate objects, and the ability to select a course of action on the basis of conditions around them.

In 1954, George Dovol designed the first programmable robot in the United States.  He called the robot Universal Automation, which was later, shortened to Unamation, which also became the name of the first robot company.  

James Watt and the Watt Generator


Scottish engineer James Watt made the first self-correcting control to find the speed of a steam engine.  It helps the feedback principle of a servomechanism, link output to input which is the basic programming.


Human like Robots


Research into human-like characteristics is leading to the development of robots that handle objects with more sensitivity.  Cog is one of the robots that has this programming.  Cog has bifocal vision to make picking up fragile items ,like an egg, easier. It’s eye sensors detect size, weight, and shape to know how to hold the weight, and shape to know how to hold the item without crushing or dropping it.

Computer Visions

Working to build computers that find.
 patterns, objects in visual images.  A visual system first takes out parts of the picture like. Edges and textures then use rules to identify things.  For example; systems can identify military items in aerial pictures.



Summary

Robots have been helping man for over 100 years and have improved our lives.  Robots are all different in many ways and people still haven’t found all of the abilities a robot can master.

 

BIBLIOGRAPHY



Bergan, Mark.  Robots.  China: Franklin, Watts, 2001. P.  19-20

Devol, George.  “Robotics Engineers, and Technicians,” Encyclopedia of Careers and Vocational Quidance, 2000

Morgan, Hank.  “Robotics,” Encarta Encyclopedia Deluxe, 2001

Stone, Brad.  Real World Robots.  Newsweek: 3/24/03

Turner, Alan.   “Artificial Intelligence,” World Book Encyclopedia, 2005

Watt, James.   "Robotic Watt Generator," Microsoft Encarta, 2001.                                                                                                                                                                                                               









 


ACKNOWLEDGEMENTS

I would like to thank the following people for helping make my project possible:

Mrs. Helms for helping me on a lot of my problems in my report.

Mr. Newkirk for finding most of the problems in my report.

And my parents for telling me to keep going.


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