Swing type multidirectional piezoelectric energy harvester

Abstract

The present invention relates to a swing type multidirectional piezoelectric energy harvester and belongs to the technical field of piezoelectric power generation. An upper cover is arranged on a shell. The upper cover is provided with a fixed magnetic sheet and a limiting ring. The bottom wall of the shell is provided with a circuit board and a suspension magnet. The left side wall of the shell is provided with a left upper boss and a left lower boss. The right side wall of the shell is provided with a right upper boss and a right lower boss. The two ends of a partition plate with a limiting ring are arranged on the left lower boss and the right lower boss. Each of the left upper boss and the right upper boss is provided with two piezoelectric vibrators and two gaskets, wherein the two gaskets are sandwiched between the two piezoelectric vibrators. The fixed sections of a reed, at the two ends of the reed, are respectively pressed on the left upper boss and the right upper boss between the two gaskets. Between the fixed sections of the reed, a wide spring is connected through a narrow spring. The wide spring is provided with two clamping plates, a movable magnetic sheet and an inertia block. The clamping plates are symmetrically clamped on the upper side and the lower side of the wide spring. The movable magnetic sheet is placed over the wide spring. The small-diameter end of the T-shaped inertial block is fixed on the clamping plate fixed below the wide spring, and the large-diameter end of the T-shaped inertial block is provided with a suspended magnet. The substrates of the piezoelectric vibrators are positioned closer to the gaskets and the free ends of the piezoelectric vibrators abut against the clamping plates.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric power generation, and in particular relates to a swing-type multi-directional piezoelectric energy harvester for supplying power to a ship positioning and tracking system. Background technique [0002] The ship positioning and tracking system has been widely used on civil ships, providing a strong guarantee for the ship's navigation safety, timely rescue, and search and rescue after losing contact. However, the existing positioning and tracking systems are all based on engine power supply. Once an accident occurs on the ship and the engine and the entire power system fail, the positioning and tracking system will lose its proper function. In addition, the existing positioning and tracking systems are all external, and cannot work normally when the ship is wrecked and flooded, and the positioning system is easily shut down or destroyed after the ship is hijacked by criminals. In recent years...

AI Technical Summary

Problems solved by technology

However, most of the piezoelectric generators currently proposed for ship positioning and tracking systems are directly excited by the additional mass inertial force on the piezoelectric vibrator, so they can only collect energy in a fixed vibration direction and the resonant frequency is poorly adjustable; the most critical is The piezoelectric vibrator is subjected to two-way excitation and two-way bending deformation during operation. When the ship vibrates or shakes in the wind and waves with a large amplitude, the brittle piezoelectric material is easily broken due to excessive tensile stress.

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