A Proximity and Tactile Sensor with Visual Multiresponse

Proximity and tactile multiresponse sensing electronic
skin enriches
the perception dimension, which is of great significance in promoting
the intelligence of electronic skin. However, achieving real-time
visualization in sensors such as proximity and tactile feedback remains
a challenge. A proximity and tactile sensor with visual function is
designed, which can realize optical early warning and electrical recognition
when the object is near, and optical display and electrical output
when the object is in contact. The sensing mechanism of the visual
capacitive sensor is discussed, the detection range, linearity, sensitivity,
and stability of the sensor are tested, and the relationship between
force, capacitance, and light intensity is established. A 5 ×
5 sensor array was prepared for object proximity detection and dynamic
force trajectory detection. By combining machine learning to recognize
optical information and electrical information, multifunctional intelligent
human-computer interactive control is realized. Visual proximity and
tactile sensors not only solve the real-time visualization challenge
of tactile sensing but also promote the development of electronic
skin to be multidimensional, multifunctional, and intelligent.