V. EXPERIMENTS
The experiments objective is to test the fusion of the
two measurements: 1) The weight detected by force sensors
located in exoshoe and 2) The inclination of the operator
back. The aim is to trigger the assistive signal from an
exoskeleton for the tasks of lifting and lowering heavy
objects.
Each exoshoe module consists of a base platform to attach
the force sensors, a cover to close the module and a strap to
attach it under the shoe, see figure 4. As mentioned before,
in this configuration, the planar plane is locked and only the
the force along the gravity axis is detected by the sensors.
The exoshoe system also includes an IMU located on the
back of the operator. The IMU reads the position, specifically
the inclination of the operator. Hence, the system can infer
when the operator is lowering to pick an object, standing or
walking.
A. Experimental Setting
The experimental setting consists of four micro-controller
boards, four radio transceiver and a computer to store and
analyze the gathered data. In this setting, two Personal Area
Networks (PAN) are created, one per foot. The aim of this
setting is to enable the subject to move and walk naturally
without cables between the computer and the exoshoes when