Photovoltaic Driven Resonant Wireless Energy Transfer System for Implantable Electronic Sensor

Abstract

In order to energize the biomedical implantable electronic devices wirelessly for in vivo health monitoring of patients in an isolated, outdoor and inaccessible environment, an alternate driving energy source is highly desirable. In pertinent to this, a photovoltaic driven wireless energizing system has been explored. The system is designed to convert solar energy to a high frequency energy source so as to facilitate energy transfer through resonant inductive link to the automated bio-medical sensing system allied with the receiver unit. The received power is observed to be 286 mW for the coil separation gap of 5 cm and load value of 40 Ω at the resonant frequency of 772.3 kHz. The automated biomedical smart sensor is competent to acquire the body parameter and transmit the consequent telemetry data from the body to the data recording segment. The real-time body temperature parameter of different living beings has been experimented, and to ensure the accuracy of the developed system, the observed parameter has been matched with a calibrated system. The proposed scheme can be suitable for monitoring wirelessly other in vivo health parameters such as blood pressure, bladder pressure, and physiological signals of the patients.

Wireless Technologies for Energy Harvesting and Transmission for Ambient Self-Powered Systems

“…(B) Schematic diagram of the process involved in the photovoltaic-driven resonant WPT system for implantable electronic sensors. Reprinted with permission under a Creative Commons open access license from ref . Copyright 2019 The Electromagnetics Academy.…”

“…For example, Swain et al . proposed a PV-driven resonant wireless energy transfer system for biomedical implantable electronic sensors . As observed from Figure B, this health monitoring system consists of two parts: a PV-driven resonance-based WPT system and an implantable smart sensing portion.…”

“…For example, Swain et al proposed a PV-driven resonant wireless energy transfer system for biomedical implantable electronic sensors. 18 As observed from Figure 10B, this health monitoring system consists of two parts: a PV-driven resonance-based WPT system and an implantable smart sensing portion. The wireless power system is composed of a PV module, a boost converter, a resonant converter, a high-frequency transformer, and a transmitter coil, which can convert solar energy to a highfrequency AC signal and drive the transmitter coil at its rated value.…”

“…Modern living environments host a wide range of ambient natural and artificial energy sources, such as solar, wind, wave, heat, vibrations, electromagnetic waves, and human activities . Over the past decade, technologies to harness these renewable energy sources have been intensively investigated, including wireless energy harvesting systems, such as triboelectric, − magnetoelectric (ME), − thermoelectric, − piezoelectric, − photovoltaic (PV), , radio frequency (RF), , and magnetic field energy harvesting. − These efforts have resulted in rapid advances in the performance of energy harvesting systems. For example, triboelectric nanogenerators (TENGs) have shown that the instantaneous output power density has initially increased from a few micrometers cm –2 to several tens of mW cm –2 .…”