We intend to develop a sensory system, which is portable
in common footwear of exoskeleton, reliable and has low
cost in material so that it can be applied in industrial use.
We reduce the coverage of sensors to only the heel and
metatarsals area, where most of the foot pressure would
be detected during upright standing position. Some body
motions, such as jumping, will cause big acceleration force,
to be confused with picking up heavy weight. To avoid the
false alarm, we include IMU in the sensor fusion scheme.
In many applications it is common to analyze the movements
and positions of the exoskeleton by measuring the
angles with encoders in the joints together with an IMU
[13][14][15][16][17]. By fusing the data from IMU, we are
able to classify the upright position from inclined position. In
this way we are able to accommodate the acceleration force,
detect the correct body movement and catch the upright
position to measure correct foot pressure when most of the
pressure forces are received in heel and metatarsals area.