Piezoelectric row-column sensing system on table tennis rackets for hit and rotation measurement
Fig 5
Illustration of the structure of the sensor array applied in the real monitoring (left) and its ability for multipixel detection.
The array contains 5 × 5 sensors, which is able to monitor 25 sensing positions. The pressure stimuli (top right) and the corresponding real-time signal (bottom right, unit: V) from the sensor array show four hits from table tennis at different time, marked with different colors.