Power supply for wireless devices of information measuring and control systems based on an improved piezoelectric vibration generator 

Vitaly A. Bardin, Candidate of engineering sciences, associate professor of the sub-department of instrument engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: vit-bardin@yandex.ru
Vadim S.Volkov, Candidate of engineering sciences, associate professor, associate professor of the sub-department of instrument engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: vadimv_1978@mail.ru
Sergey N. Bazykin, Doctor of engineering sciences, associate professor, head of the sub-department of instrument engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: cbazykin@yandex.ru
Vitaly A. Bardin, Candidate of engineering sciences, associate professor of the sub-department of theoretical and applied mechanics and graphics, Penza State University
(40 Krasnaya street, Penza, Russia), E-mail: nelli.baz@mail.ru
Kristina S. Samokhina, Candidate of engineering sciences, associate professor of the sub-department of instrument engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: kristina.bazykina@mail.ru
Ilya N. Urvaev, Postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: iurvaev@mail.ru

Background. In recent years, there has been a search for alternative sources of electricity that use natural and man-made energy sources, such as solar radiation, water movement, wind, vibration and others. On an industrial scale, solar panels and wind power plants are already widely used to harness environmental energy. However, there are also objects with low energy consumption, such as small household appliances, mobile phones, wireless systems for diagnosing and monitoring the technical condition of objects, and other autonomous systems. The purpose of the research is to develop a bending type piezoelectric generator with a sensing element made of lead zirconate titanate material using silicon microelectronic technology. Materials and methods. To study the characteristics of piezoelectric generators of the bending type, methods for calculating alternating current electrical circuits, the theory of oscillations, as well as circuit modeling of equivalent electrical circuits using the MathCad program, and methods for solving differential equations were used. Results. The problem of increasing the output power was solved by finding the length of the electrode reaching its peak x ≈ 0.44∙L (L is the length of the beam), that is, covering 44 % of the beam from the clamped end, and the optimal geometric parameters were determined: length L = 60 ∙ 10^–3 m , width W = 3 ∙ 10^–3 m, thickness of the piezoelectric layer H = 1,5 ∙ 10^–6 m, thickness of the substrate h = 250 ∙ 10^–6 m. As a result, the maximum output power of the beam piezoelectric generator is obtained, reaching 9.2 μW. Conclusions. Mathematical modeling of the dependences of power on geometric parameters was carried out and graphs were obtained. The moment of resistance, the maximum moment in the section, and the force acting on the beam were calculated from the strength conditions. A bending type piezoelectric generator with a sensitive element made of PZT material using microelectronic silicon technology has been developed.

 piezoelectric energy converter, vibration generator, wireless power supply

Bardin V.A., Volkov V.S., Bazykin S.N., Bazykina N.A., Samohina K.S., Urvaev I.N. Power supply for wireless devices of information measuring and control systems based on an improved piezoelectric vibration generator. Izvestiya vysshikh uchebnykh zavedeniy. Povolzhskiy region. Tekhnicheskie nauki = University proceedings. Volga region. Engineering sciences. 2024;(3):98–114. (In Russ.). doi: 10.21685/2072-3059-2024-3-10