Help: Solution for Detecting the No of persons sitting on a seat

If you know the (average) weight of a person you can use a force sensor,such a load cell . If you need a budget solution, you could try to look to solutions like Takktile, but that does require proper understanding of force sensing mechanics, and proper callibration..

I'm wondering how you can put several people on a single bicycle seat. Is this for acrobatics? If you have multiple seats, and just have to check how many seats are taken, you can use simpler sensors, such as capacitive sensing, or simple force sensitive resistors. If you can give more info, we can give better possible solutions.

Thanks for the Reply: The load applied can vary according to the size,its very dynamic .. consider if we have to detect the number of persons sitting on the bike what will be the solutions for that. Load sensing cant be used...

Can you tell a bit more about your application? Why can't you use load sensing? Please give more information on what your constraints are.

If you can't use load sensing, you'll have to use a camera and image processing, or ask someone to tell you how many people are on the saddle.

There are many ways to detect the number of people, but as pointed out, more information is needed to suggest a solution or optimize a solution.

What are the geometry and dimensions of the seat?

Do people occupy specific locations?

Are they moving constantly?

What are they wearing?

Who are the people - can they be wearing markers?

What are the dynamics of seating? How fast do things change?

What are the ambient conditions? Is it outdoors?

How much light is there?

Can it get wet?

Why is the number important?

etc.

Thanks For the reply..

The project is Detecting the number of persons seated on a Two wheeler.

1> We cant use the load sensor is because the weight of the persons seated can vary largely that makes it non-applicable.

2> I had thought to use a switch Case array- But limited with the i/o pins of the controller. In this i had thought to pogram it as such that it will make a profile of the person as per the pattern generated by the seated area and the gaps between the persons can be used to detect the persons seated.

3> Ideas are welcomed

I dont need to specify the nature of environment, Just a Bike seat

Thanks Regards

Your point 2) is written too abreviated to make sense, at least to me. Is this a homework assignment, or do you have a product in mind? In the last case, what would be the unique selling points of this product?

Better answer Doug's points, or tell why you can't use video data.

Is this a bicycle or a motorcycle seat - I don't see how a bicycle seat fits more than one.

Is there more than one seat?

If it is a motorcycle, there may not be a gap between riders.

Is there room to put an optical (light interruption) sensor at each seating position?

Please give the maximum number of people and. the dimensions of the seat  If you expect a meaningful answer, you must give related data.

Bill

Have you got a budget for this, or is it completely academic?

Iam working on a project that will detect the number of persons seated on the bike, and if the number of persons exceed 2 then it will immobilize the engine, The Challenge is to detect the number of perons seated. you can see the link for reference of the Bike seat http://www.heromotocorp.com/en-in/the-bike/two-wheeler-motorcycles.html . By the Bike i Mean a Two Seated Motor Cycle.  if you have any better solution apart of detecting by the persons sitting on SEAT kindly enrich with that.

The government regulation is 2 persons but sometimes people go with morethan 2 posing risk this is the project.. i think i have elaborated all.;)