Vol. 16, no.1, 2024
РусскийEnglish
RADIOELECTRONICS
INVESTIGATION A METHOD FOR MEASURING BLOOD PRESSURE WITH A CAPACITIVE INTEGRATED SENSOR
Andrey K. Movchan, Eugeniy V. Lomakov, Eugeniy V. Rogozhnikov, Kirill V. Savenko
Tomsk State University of Control Systems and Radioelectronics, https://tusur.ru/
Tomsk 634050, Russian Federation
E-mail: ltaak@tu.tusur.ru, evgenii.v.lomakov@tusur.ru, evgenii.v.rogozhnikov@tusur.ru, kirill.savenko@tusur.ru.
Received October 19, 2023, peer-reviewed October 26, 2023, accepted November 02, 2023, published March 15, 2024.
Abstract: A method of wireless measurement of blood flow parameters is investigated using an implantable passive capacitive sensor and an external reader. This device is designed to measure the parameters of blood flow in the human body, through the installation of a passive capacitive sensor and inductive coupling with an external reader device. The method of wireless measurement is based on the connection of resonant circuits at an operating frequency of 10 MHz. The mathematical calculation of the device circuit is presented. The result of the calculation was the dependence of the output voltage of the external reader on the change of capacitance in the implanted passive sensor. The values of the potential sensitivity of the device are obtained. The manufactured layout of the device and its parameters are presented. The mock-up allowed to investigate the dependences of the coupling factor of the circuits when using coils of an external reader of different sizes. Also the measurement of the output voltage of the external reader from the value of the passive sensor capacitance was made. The value of real sensitivity of the device layout was measured.
Keywords: resonant circuit, passive sensor, blood flow, coupling factor, stent, capacitive sensor
UDC 621.31
RENSIT, 2024, 16(1):43-52e DOI: 10.17725/j.rensit.2024.16.043
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/536/16(1)43-52e.pdf