All the sensors and input devices in system include pressure
sensors, gyroscopes, and encoders. The pressure sensors are
installed in forefoot and heels of each shoe for gait
recognition. A rotary incremental encoder is installed on each
knee joint for measuring knee angle. The gyroscopes are
mounted on the calf and the thigh to measure the angular
velocity. Meanwhile, there is a gyroscope on the waist of
back.
According to the configuration about sensors above, the
single-line topology is designed. The central process module,
using the CAN bus adapter connected with the CAN network,
is the master node of the entire CAN bus. The other sensor
nodes collected information and sent it through the CAN bus.
They include the nodes on left calf, left thigh, right calf, right
thigh, and waist.