Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Sensors.... they are the way to tell digitally what happens physically..... There are different sensors for different things... so it is nearlly impossible just to describe all of them... but for a good source check out acroname
IR sensors work in different ways. There is a receiver and a transmitter. IR Light leaves the transmitter and when an object is close enough the light bouunces off the object and is detected by the receiver. The IR light of the emmiter is sometimes modulated so that external light is filtered. There are also IR sensors that tell distances, by triangulating where the received IR light enters the reciever and lands on the array of sensors....
There are devices that can't be detected with IR light, as are plastics, black or dark objects, etc. So don't be thinking on detecting a glass of Coke :wink:
There are many types of sensors on robotics. You may buy a book of Everett " Sensors for Mobile Robots" in which, he discribed almost types of sensors.
Note that, ultrasonic sensors are the most popular sensors using on robotics. If you have some requirements about ultrasonic sensors, you may contact with meeh via email : [email protected]. Or you may ask professors, such as:
Roman Kuc, Johann Borenstein...
Or you may read their papers.
I'm just a student, I only can help simple basic problems