Abstract
Tactile sensors are widely employed to enable the sense of touch for applications such as robotics and prosthetics. In addition to the selection of an appropriate sensing material, the performance of the tactile sensing system is conditioned by its interface electronic system. On the other hand, due to the need to embed the tactile sensing system into a prosthetic device, strict requirements such as small size and low power consumption are imposed on the system design. This paper presents the experimental assessment and characterization of an interface electronic system for piezoelectric tactile sensors for prosthetic applications. The interface electronic is proposed as part of a wearable system intended to be integrated into an upper limb prosthetic device. The system is based on a low power arm-microcontroller and a DDC232 device. Electrical and electromechanical setups have been implemented to assess the response of the interface electronic with PVDF-based piezoelectric sensors. The results of electrical and electromechanical tests validate the correct functionality of the proposed system.
Highlights
Recent advances in electronic systems are playing a key role in enabling tactile sensing systems to be used for important and critical applications, such as restoring the sense of touch in prosthetics [1].These applications interact with the surrounding environment through tactile sensors using different transducing methods, such as capacitive [2], piezo-resistive [3], and piezoelectric [4]
The obtained results meet the concept expressed in Equation (2) that as as force increases charge increases, the conditioner was included in the test to be a reference point force increases charge increases, the conditioner was included in the test to be a reference point for for evaluating the behavior of the interface electronics (IE)
The IE was disconnected from the sensors and conditioning from piezoelectric sensors
Summary
Recent advances in electronic systems are playing a key role in enabling tactile sensing systems to be used for important and critical applications, such as restoring the sense of touch in prosthetics [1]. These applications interact with the surrounding environment through tactile sensors using different transducing methods, such as capacitive [2], piezo-resistive [3], and piezoelectric [4]. Applied input touch is detected by the sensor, which is measured and sampled by the interface electronics (IE). Signals are sent to the processing unit for data decoding e.g., touch modality classifications [5]
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