Indirect-excitation-type self-generating device for river monitoring system

Abstract

The invention relates to an indirect-excitation-type self-generating device for a river monitoring system and belongs to the field of river monitoring. An outer housing is internally provided with an inner housing; the right end of the inner housing is provided with an inner housing bottom wall, and the left end is provided with an end cover; and the end cover is provided with two piezoelectric vibrators and a force application reed. The end portion of each piezoelectric vibrator is provided with a push block; each push block is abutted against the force application reed; and the end portion of the force application reed is provided with excited magnets and a frequency modulation mass block. The inner housing bottom wall is embedded with fixed magnets. The fixed magnets and the excited magnets are in opposite pole opposite arrangement. A pin hole in a swing arm of an exciter is sleeved on a pin shaft. The two ends of the pin shaft are fixedly arranged to inner housing ear plates respectively. One end of the swing arm is provided with a flow turbulence body, and the other end is provided with exciting magnets. The exciting magnets and the excited magnets are in opposite pole opposite arrangement. The two ends of a balance reed are arranged to an inner housing connection plate and an exciter connection plate respectively. The indirect-excitation-type self-generating device has the advantages that an energy capture device is a 3-degree-of-freedom system, and is wide in frequency band; the piezoelectric vibrators do not contact with the fluid; a piezoelectric wafer only bears pressure stress and the fixed magnets can realize amplification and limitation; and the self-generating device is high in reliability and large in generating capacity.

Description

technical field [0001] The invention belongs to the technical field of river monitoring, and in particular relates to an indirect excitation type self-generating device used in a river monitoring system. Background technique [0002] There are thousands of rivers all over the territory of our country. In recent years, due to insufficient treatment of industrial wastewater, soil erosion, and improper use of pesticides and fertilizers, most rivers have been polluted to a certain extent. Nearly 1 / 4 of the rivers or river sections cannot meet basic irrigation due to pollution. need. In addition, because the current flood control facilities for small and medium-sized rivers in many areas are not perfect, or even do not have any flood control facilities, when the flood season comes, it may cause dangers such as embankment failure or flooding, directly threatening the lives and property safety of people along the coast. Therefore, river monitoring has been highly valued by releva...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the power supply of the existing river monitoring system, the present invention proposes an indirect excitation type self-generating device for the river monitoring system

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