With the continuous development of artificial intelligence and robotics technology, humanoid robots have gradually entered our lives and workplaces. To make these robots more human-like, it is essential not only to have similarity in appearance but also to endow them with rich tactile perception capabilities. In achieving this goal, finger tactile sensors play a crucial role.

Principles of Finger Tactile Sensors

Finger tactile sensors are designed to simulate human tactile perception, allowing robots to sense information such as pressure, shape, and texture on the surface of objects. Commonly used technologies include piezoelectric sensors, capacitive sensors, strain sensors, and optical sensors. These sensors detect forces or deformations on the surface of fingers to perceive the touch of objects.


  1. Precise Manipulation: Humanoid robots equipped with finger tactile sensors can perform various manipulation tasks such as grasping, handling, and assembly with greater precision. The sensors help robots perceive the shape, size, and hardness of objects, allowing them to adjust grasping force and posture to safely and reliably complete tasks.
  2. Human-Robot Interaction: Finger tactile sensors enable robots to interact more flexibly with humans. By sensing the force and direction of touch, robots can understand human intentions and respond accordingly, achieving a more natural and intelligent interaction experience.
  3. Healthcare: In the healthcare field, humanoid robots equipped with finger tactile sensors can be used for delicate surgical operations and rehabilitation training. The sensors help robots perceive the structure and hardness of tissues, allowing precise control of surgical instruments or performing massage and therapy, thereby improving surgical success rates and rehabilitation outcomes.
  4. Virtual Reality: Finger tactile sensors can also be applied in the field of virtual reality to provide users with a more immersive tactile experience. By simulating the tactile characteristics of different objects, sensors allow users to feel the touch and manipulation in virtual environments, enhancing the realism and interactivity of virtual reality.

Technical Challenges and Future Development

Although finger tactile sensors have broad prospects in the application of humanoid robots and other fields, they still face some challenges. For example, the sensitivity and accuracy of sensors need to be continuously improved to achieve more precise tactile perception. Additionally, the durability and stability of sensors need to be enhanced to adapt to complex and harsh working environments. In the future, with the development of materials science, machine learning, and artificial intelligence, finger tactile sensors will continue to break through technical barriers, providing humanoid robots with richer and more flexible tactile perception capabilities, and driving the development of human-robot interaction and intelligent manufacturing fields.