How to build a robot cart for rehabilitation of the knee joint in stroke?

Hello. The principle, as do I, in fact, is clear: on a flat surface, at least on the floor, put a basis - the same strip of plywood under the leg. Attach the base to the pelvis of a person, that does not come off. On the basis of let something like a "rail" on which to ride the trolley back and forth, and where necessary - to stop.

On top of the cart attachable foot for foot, motor and the hardware platform "Arduino", which will manage the stops and traffic. Electricity network 220АС/24DC. Base rails, electric I make myself, with the help of friends, of course, but the very cart-"sorry, move over", as they say, no advice can not do.

Well, someone will help with that? I just started it. My name is Ilya, I'm 48 years old, I live in the suburbs 6 years ago I had an ischemic stroke, since then, I disabled 2 groups, but I want to recover, at least some.

What do you say?

Ilya.
September 26th 19 at 06:37
3 answers
September 26th 19 at 06:39
Need a motor-reducer, which will set in motion your cart.
to control the motors you need motor driver (it is possible to assemble the transistors or to buy a ready-made chip).
The motor driver is connected to the controller (Arduino), which gives him control signals (rotation direction and speed using PWM).
Plus need to tie a couple of sensors - limit switches (in a simple form - regular buttons, but you can use contactless inductive, or IR) that will determine the achievement of a cart of the finite part of the trajectory and thus the controller will have to rotate the engine in the opposite direction.
September 26th 19 at 06:41
But to clarify this task?
The truck should Flex the foot in the joint or massaging the bottom surface of the foot rollers?
As opredelyaetya where to stop? (by pressing a button by the operator, the limit switches or for some more evidence)
Specifically you can implement though elektrotvarka. manage at least the switches of the controller if necessary, you can at least relay, though the PWM.
September 26th 19 at 06:43
As drives can have a look at the engine from the car wipers or Windows.

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