Hi All!
I’m currently starting out a project in which I want to develop a device that can detect the difference between a cyclists and a pedestrian. The device must be able to distinguish between a pedestrian and a cyclists and count them. I’m wondering what sort of sensors should I use?
I’m sort of new to this all so sorry if I didn’t give enough explaination. Any response will be appreciated 
Metal detector.
Put up a set of red traffic lights.
The pedestrian will stop, but the cyclist will carry on
Metal detector
What about pedestrians with prosthetics?
Quantity of metal.
The counter will be placed on a pathway in a park. Also would the metal detector pick up jewellery?
How are you planning on detecting people, regardless of whether a bicycle is present?
How about dogs, people with strollers, etc.?
Ive been experimenting with this.
I’ve set up a simple counter and feeding the information into an excel spreadsheet. It’s a little inaccurate.
Yes that’s also a constraint I’ll have to work out.
What about a pedestrian in a suit of armour, or wearing chainmail ?
srnet:
What about a pedestrian in a suit of armour, or wearing chainmail ?
Have you been spying on me?
You might be able to use a chest high beam break/reflection sensor of some type to detect every thing going through, and use the twin rubber hose vehicle sensors to separate the bicycle count. The twin hose vehicle counters are frequently used for bicycle counting on bike paths.
I think this project needs a camera and image analysis software which means that it need the power of a PC. Maybe a RaspberryPi would be capable.
What about a cyclist who is walking with his/her bicycle?
...R
Or a unicyclist.
In chain mail.
AWOL:
Put up a set of red traffic lights.
The pedestrian will stop, but the cyclist will carry on
+1 for that - it's priceless!
Or a unicyclist.
In chain mail.
A minor source of error that conveniently cancels the error introduced by the tiny number of people who can afford to buy carbon fiber bikes and ride them in the park.
There is a pretty good technical summary of various methods here
jremington:
people who can afford to buy carbon fiber bikes and ride them in the park.
The logic of buying lightweight bikes (other than for competition) escapes me. I know some guys who are serious leisure riders and have (by my £100 standards) very expensive bikes.
As the purpose of cycling is exercise a heavy bike would be more effective. You don't see weight-lifters using balloons.
...R