doppler radar ( car speed detection) with cars counter

hello i want to make a radar speed and cars counter, i want to count cars that their speed bigger than 50 km/h and less than 50 km/h for example and display the cars count on lcd display , i want to do that using arduino mega and doppler sensor , my problem is to count cars what sensor i should use ?

When I asked Google "doppler radar arduino" there was a LOT of information and devices reported.

Paul

i want a sensor to count car numbers

marwan12:
i want a sensor to count car numbers

I guess you did not find any that did exactly that. By posting on the Arduino forum, most people will make the assumption you want something to attach to an Arduino so you can write the software to do what you want.

Do you have any ideas about how to select just “cars” from all the other types of vehicles?

PAul

What range does the radar you've been using have? Does it have a datasheet?

i want to use hb100 doppler sensor its range 20m

Is that sensor capable of distinguishing cars from, say, vans or buses or cyclists?

50kph is about 14ms-1, so your targets will be in range for less than two seconds if they are exceeding the threshold speed.

how to know what is the max speed can i detect ? plz im still new to arduino i dont have too much experience and i want to do this project for college

You'll need amplification and filtering for the module, I believe.

yeah i bought preampli board , does hb100 doppler sensor can detect high speed ?

....and there it is.

College course work.

i have 1 question , what sensor should i use to count the cars ?

marwan12:
i have 1 question , what sensor should i use to count the cars ?

What software are willing to write to use the output of a sensor to be counted as a car? What happened to your Doppler radar sensor project?

Paul

in the same project i will use doppler radar to measure cars speed and i want to count the cars and classify them in speed range , i want to use arduino mega

marwan12:
in the same project i will use doppler radar to measure cars speed and i want to count the cars and classify them in speed range , i want to use arduino mega

Do you suppose every speed peak represents a new car?

Paul

that a solution but my programming skills not good , still new to arduino

what if a 2 car near each other the radar will count them as 1 object

marwan12:
what if a 2 car near each other the radar will count them as 1 object

True, only if the beam pattern is too wide. OP will have to experiment.

Paul

marwan12:
that a solution but my programming skills not good , still new to arduino

Better get busy, then.

Paul