A Multi-scale Flexible Tactile-Pressure Sensor

The Bionic Electronics industry often requires that flexible artificial skin should have human skin-like multi-sensory functions. However, present sensors are difficult to achieve tactile and pressure sensory functions simultaneously due to the trade-off between measurement range and measurement precision. In order to deal with this problem, this paper presents a flexible tactile-pressure sensor based on bionic structure. The bionic structure combines several sensors to simulate different types of pressure stimulation receptors of the human skin. The upper sensors have high measurement accuracy to achieve the tactile sensory function. The lower sensor has a wide measurement range to achieve pressure sensory function. These two measurement ranges are able to realize multi-scale stress measurement of external pressure stimulation. The sensor, in turn, is able to perform the tactile and pressure sensory functions simultaneously.