BioIntegrated Wireless Sensors for the Epidermal Monitoring and
Reactivation of Sensorial Injuries
Sistemi wireless bio-integrati per il monitoraggio dell’epidermide e il ripristino di funzionalità tattili
The proposal is inspired by the pioneering
basic research that already involves the proponents
about the study of wireless devices suitable to be
placed in direct contact with human skin having the
fundamental characteristic of being able to run without
battery and to be able to be concentrated in the
encumbrance of a plaster or even a tattoo. Previous
research, which has already had the opportunity to
cement the various complementarities of the proponent
research group, have shown that it is possible to use a
widespread wireless technology in the logistics of
goods, such as Radiofrequency Identification (RFID), to
power radio devices. -electronic devices applied to the
skin and read the information they acquire up to a
distance of about one meter.
Development of epidermal technologies for
the realization of bio-integrated radio interrogation
membranes that can act as SECOND SKIN (with data
acquisition capabilities) equipped with wireless
sensors without batteries and remotely interrogated by
fixed and wearable systems with local processing
capacity (smartwatch smartphones).
The RFID measurement Station
Bio-Integrated Flexible and Stretchable Electronics for Skin Sensor Networks
Chicago (US) - May 2019
BSN Conference 2019
|C. Miozzi, S. Nappi, S. Amendola, C. Occhiuzzi,
G. Marrocco, "A General-purpose Configurable RFID
Epidermal Board with a Two-way Discrete Impedance Tuning",
IEEE Antennas and Wireless Propagation Letters, February
Current advances of the Radiofrequency Identification (RFID) technology can boost the emerging class of biointegrated skin devices exploiting low-power (even passive) wireless communication and sensing interfaces. This work describes a small-size (3cmx3cm) flexible UHF RFID board conceived for the rapid laboratory experimentation and suitable to multi-purpose monitoring of physical parameters (e.g. temperature and sweat) over the skin and/or over clothing layers and medical plasters. An engineered open-loop antenna is coupled with a two-way discrete (four states) tuning circuit to compensate the frequency shifts that occur in real applications due to the intrinsic variability of the human body. The capability of the tuning mechanism to down/up-shift the operating frequency and to restore the default state is validated by means of both numerical simulation and measurements over some volunteers in realistic conditions.
|C. Miozzi, G. Marrocco, “An Epidermal
Configurable Antenna System for the Monitoring of
Biophysical Parameters,” 22th Riunione Nazionale
di Elettromagnetismo (RiNEm 2018), Cagliari (IT),
Skin sensors based on Radiofrequency Identification enable non-invasive monitoring of human physiologic parameters. To speed up the experimentations of new sensing modalities and their possible applications, a general-purpose on- skin oriented board is here described. A 3 cm by 3 cm flexible Kapton layer hosts a miniaturized open-loop antenna tuneable in the worldwide UHF RFID band 860- 960 MHz, a microchip with internal ADC and pads for interconnecting external sensors and a battery for data-logging mode. When working in Battery Assisted Passive mode it can be read up to 1.5 m and hence the wearer can automatically upload the stored data in mobility. The device is preliminarily experimented in the measurement of the skin temperature and moisture on clothes.
S. Nappi, G. Marrocco, “Gosper Space-Filling Radiofrequency-Skin for the Detection and Identification of Surface Cracks,” 22th Riunione Nazionale di Elettromagnetismo (RiNEm 2018), Cagliari (IT), September 2018.
The aging of polymer-based objects (tires, cable harness, paints, gaskets) may appear as the formation of surface defects like cracks and scratches. An early detection of such signs may support the Predictive Maintenance in the Industry 4.0 paradigm of critical polymeric devices before the occurrence of a severe damage. Inkjet printed Space Filling Curves (SFC) are here proposed as an artificial electric skin, suitable to be integrated with an RFID tag, at the purpose to detect and remotely transmit the presence of small aging signs of a surface. Thanks to the particular properties of the Gosper SFC, the size and space resolution of the skin can be easily controlled by few parameters.
M Bianco and G. Marrocco, "Fingertip Self-tuning
RFID Antennas for the Discrimination of Dielectric
Objects", EUCAP 2019, Kracov, Polland
Self-tuning RFID antennas are based on a new family of multi-state microchips capable of automatically adapting an internal reactive network in order to maximize the power harvested by the attached antenna when boundary conditions change. This concept can be applied to develop a radio-frequency fingertip-augmented device (R-FAD) to be used as dielectric- probe on a finger to discriminate different kinds materials and their discontinuities. When the finger, provided with a self-tuning epidermal tag, comes in touch with an object, the modification of the input impedance of the tag, related to the object’s material, can be retrieved by an interrogating reader placed on the wrist. Possible applications concern the aid to impaired people suffering from peripheral neuropathy or eyesight deficiency, but even the inclusion in robotic prosthesis. The modeling and design and characterisation of the epidermal self-tuning tag is here presented for the first time and the idea is corroborated by some experimental tests with a system prototype.
Nappi, P.P Valentini and G. Marrocco, "Conformal
Space-Filling Electromagnetic Skins for the Wireless
Monitoring of 3D Object Integrity", EUCAP 2019,
The widespread use of polymer-based objects such as pipes, cables, tiles, gaskets in a wide range of applications demands for large scale a regular monitoring of their health sta- tus in order to prevent potential failures during service. Indeed, the exposure of these objects to mechanical or chemical stressing agents may accelerate their aging process thus decreasing their natural lifetime. A non-invasive and early monitoring of these aging signs (such as surface defects) may enable a predictive maintenance in order to avoid, or at least to minimize, unexpected failures.
This paper describes a wireless crack detection method based on space-filling curves working like an electromagnetic second- skin enveloping the object. The conformal sensor permits to remotely transmit the presence of small defects over the object by using Radio Frequency Identification antennas and microchip transponders provided with anti-tampering features. The pro- posed idea is corroborated by numerical modeling and by some experimentations with a plastic pipe joint coated by a three- cells sensing skin made by silver conductive paint that is suitable to enable a wireless robust crack detection system up to 1.5m distance.
Carolina MIOZZI at RINEM 2018
Cagliari (IT) - CNIT Award
CNIT Award at Riunione Nazionale di Elettromagnetismo