Shearing type permanent magnet piezoelectric composite structure based wire energy-taking apparatus and preparation method

Abstract

The invention relates to a shearing type permanent magnet piezoelectric composite structure based wire energy-taking apparatus and a preparation method, and belongs to the technical field of energy collection. The apparatus comprises a beam fastener, two piezoelectric cantilever beams, a permanent magnet, a rectification voltage stabilizer and a wire, wherein the two piezoelectric cantilever beams adopt the same structure and are arranged in parallel at intervals; the electrodes of the same polarity of the two piezoelectric cantilever beams are connected in parallel; one end of each piezoelectric cantilever beam is fixed on any one firm and stable object through the beam fastener to be used as a clamping fixed end; the other ends of the two piezoelectric cantilever beams are pasted on the permanent magnet concurrently to be used as a free vibration end; the two piezoelectric cantilever beams are connected with the rectification voltage stabilizer through the wire; and the rectification voltage stabilizer is connected with an energy utilization apparatus through the wire. According to the shearing type permanent magnet piezoelectric composite structure based wire energy-taking apparatus, the collecting power of the permanent magnet / piezoelectric material composite structure is greatly improved; the energy collection of the magnetic field around the wire can be well realized; and in addition, the wire energy-taking apparatus is small in size, low in cost, safe and reliable, convenient to mount and maintain, and has the non-invasion type design mode.

Description

technical field [0001] The invention belongs to the technical field of energy collection, and in particular relates to a wire energy harvesting device and a preparation method based on a shear-type permanent magnet piezoelectric composite structure. Background technique [0002] Under the background that the smart grid has become a research hotspot, various supporting key technologies have been developed in depth. Among them, an advanced measurement system based on widely distributed various sensors is the basis for realizing the intelligence of the grid. However, the wide-area monitoring and measurement system of the power system cannot be realized at present, and the metering system of the power system is mainly concentrated in the substation at this stage, and real-time measurement and data collection cannot be realized for the transmission and distribution lines, which limits the application of sensor nodes in these occasions One of the most important problems is the pow...

AI Technical Summary

Problems solved by technology

Although the d15 shear piezoelectric effect has a higher piezoelectric coefficient, it is rarely used in the design of composite magnetoelectric devices. The main difficulty is that it is difficult to generate suitable shear force through magnetic coupling and effectively couple to the piezoelectric electric phase material

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