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CAMOSCA is invited, Stand in presence!!!

 THE INTERVIEW

In Rome,

@ Gazometro Ostiense,
Health Sector,
Stand J.1.08

CAMOSCA

a ChAir Moving On the Stairs Completely Automatically

 

designed in Genoa, Italy by ing. Andrea Dogliotti

andogliotti@yahoo.it   +39 335 831 0655

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CAMOSCA VIDEOS ALONG THE STAIRS

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PRESENTATION

 

A Passenger From DESK to STAIRS, Goes Up, then Down, Back to Desk. ACCELERATED.

 

 CAMOSCA at TG5



Presentation
Genoa_2/12/2021
Powerpoint
and video (9')
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TECHNICAL VIDEOS

 

Going UP A FLIGHT, empty

 

Coming DOWN A FLIGHT, empty

 

Going UP a SINGLE STEP, empty

 

 

 An electric wheelchair enabled to go up and down steps and even steep stairs in safety and stability,

while maintaining operational functionality and agility in normal use

 

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An electric wheelchair 1 from normal trade is integrated with:

  • a rear frame 2 moving horizontally, bearing a wide foot c for wheelchair support when the main wheels A do not touch the ground, said foot being mobile in vertical from about +23 cm down to -5; 
  • a pair of telescopic cylinders 3 that may be elongated up to 3 steps, replacing the stand of the front pivoting wheels B;
  • a device 4 preventing the pivoting of the front wheels B when on the stairs;
  • a pair of omnidirectional small wheels d related to the front wheels B supported by a pair of telescopic cylinders 5 that elongate from normal position +4 cm down to ground level and up to 3 more steps;
  • a system of sensors and automation for fully autonomous driving.

 

All motors and sensors are electric, using the same batteries normally installed on electric wheelchairs, with possible upgrade in capacity. All positions and elongations are defined in accord with well defined formulas, depending on the characteristics both of the wheelchair and of the stair that it is intended to afford.


In normal conditions the modified wheelchair moves like any normal one, except for the dimension of the rear frame and a greater weight.

When moving up and down the stairs, the front small wheels d and the rear foot c alternate with respective wheels A and B in sustaining the wheelchair, when the wheels meet the steps.  The frame 2 supporting foot c moves horizontally: it extends when foot must lean on upper step with respect to wheel A, it contracts when it must lean on the same step. Vertical movements of A wheels, and thus of wheelchair’s body, come from the movements of other wheels, telescopic cylinders and frames.


The automation system includes a PLC with ladder software and a set of sensors, laser and ultrasounds position and distance, rotary and linear encoders, an inclinometer, limit switches.

It is fully autonomous in managing

  • the ascent and descent of a single step or a staircase, even long and with irregular steps,
  • the orthogonal alignment to the staircase, at the start and along the path,
  • the rebalancing to compensate for the tolerances in operation and reading the heights of the steps,
  • the arrest, with any manual operations, and continuation or return.

 

The technology may be applied to other types of vehicle (surveillance robots, etc...).