Help me in sensors plzzz.....

[bhavikparekh51]

I am an undergraduate and an beginner in robotics with no experience....
Is their any sensor which could measure distance from a point where my robot starts and continuously measures a distance from starting point and after a particular threshold decided point in meters it takes a turn or it stops.....plzz help me...

Thank you

 

[HTA]

there are several types of sensor which can do this job. Either laser/LED triangulation or ultrasonic. For hobby applicaton you find here modul solutions: https://www.robotshop.com/en/devantech-ultrasonic-range-finder-srf05.html . For more professional you can look at: https://www.azosensors.com/search.aspx?q=triangulation&site=all&fsb=1.

Enjoy your design work!

 

[bhuwanmadan72]

There are Ultrasonic distance measurement sensor which costs around INR 950
or a bit inexpensive way is to use a IR sensor which has a tx and a rx and gives a voltage level according to the distance from where the ray is been reflected back.
but the IR sensor is not that effective it works for a short range also

 

[bhavikparekh51]

There are Ultrasonic distance measurement sensor which costs around INR 950
or a bit inexpensive way is to use a IR sensor which has a tx and a rx and gives a voltage level according to the distance from where the ray is been reflected back.
but the IR sensor is not that effective it works for a short range also

Thank you for the reply

How would this ultrasonic sensor work in my application?? can u please explain it to me....??
could i measure a distance of 50 meters with this type of sensor or i need to go for laser???



please help.....

Thank you

 

[bhuwanmadan72]

HC-SR 04 is an ultrasonic sensor but its range is upto 4 m

here's the data sheet
http://users.ece.utexas.edu/~valvano/Datasheets/HCSR04b.pdf

and to ans your question how can you use it in your work here's an example project
**broken link removed**

- - - Updated - - -

I am not really sure about a range of 50m I searched on net there are ultrasonic sensors but are they available or not or how useful are they I am not really sure.

FT 90 ILA and FR 90 ILA there range is around 250 m
here is the data sheet
http://www.sensopart.com/jdownloads/Handbuecher/Messende%20Sensoren/06813621_fr90ila_ft90ila_fr91ila_ft91ila_e.pdf

 

[ark5230]

When I read the first post carefully, I feel this issue does not necessarily demand for a sensor, the issue can more conveniently be handled in the firmware controlling the robot by keeping track of the movement.