Methods for assessing the impact of the energy fields of experimental prototypes of contactless charging of implants' power supply sources on biological objects

International Scientific Conference «AGRITECH-2019: Agribusiness, Environmental Engineering and Biotechnologies»

农业科学;生态环境科学;生物科学

Rabin, A.V.^1 ; Petrushevskaya, A.A.^1

Saint-Petersburg State University of Aerospace Instrumentation (SUAI), ul. Bolshaya Morskaya, 67, lit. A, St.-Petersburg

190000, Russia^1

关键词: Biological objects;    Charging current;    Contactless charging;    Energy characteristics;    Experimental prototype;    Negative feedback loop;    Receiving modules;    Transmitting circuit;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/315/3/032030/pdf
DOI  :  10.1088/1755-1315/315/3/032030

来源: IOP

【 摘 要 】

Currently existing bioimplants need to be periodically removed from a body to replace a source of energy supply and then reinstall them in a body. It is to a certain degree a threat to the health of the patient and degrades the quality of his life. Developed by the authors contactless charger for transcutaneous energy supply of implantable modules automatically adjusts the power of the electromagnetic field. When implementing the methodology for assessing the impact of the energy fields of experimental prototype of implant power supplies' contactless charging on biological objects, it was decided to link the transmitting and receiving modules to negative feedback loop, which allows stabilizing the power supplied to the transmitting circuit by the D class amplifier. This solution minimizes the heating of the receiving module, both in the area of the receiving circuit, and in the area of the stabilizer of the charging current of the battery. Thus, in addition to smaller dimensions, the new solution allows optimizing the energy characteristics of the device as a whole.