The invention discloses a novel micro ball sensor for sensing
space environment changes and a manufacture method thereof. The sensor simulates a biological behavior that lateral lines of a fish identify and locate prey
underwater, that is, the exposed
lateral line canals in the neuromasts in the lateral lines can mechanically sense the vibration generated during the swim of
underwater animals. Positioning is performed according to the time and
phase difference that a vibration wave reaches different neuromasts
underwater, and a motion
signal is converted into a physiological
electric signal to be transmitted to sensory cells to sense stimulation such as external
water flow changes, low-frequency vibration, and temperature changes. By using a
polyvinylidene fluoride direct piezoelectric effect, a spatial
airflow change is imitated and sensed and a spatial
vibration source is positioned. A single ball sensing unit senses the vibration by using the
polyvinylidene fluoride and directly converts the vibration into electric signals so as to calculate a spatial
airflow magnitude and angle. A plurality of ball sensing units are arranged in an array, calculate the
airflow magnitude and orientation according to the time and
phase difference that the vibration wave reaches different sensing units, and improve the spatial airflow magnitude and orientation calculation accuracy.