River monitoring device based on piezoelectric stacks

Abstract

The invention relates to a river monitoring device based on piezoelectric stacks and belongs to the field of river monitoring. A casing comprises a flow gathering pipe and a straight pipe, wherein a spoiler body and an inner barrel are mounted on the inner wall of the straight pipe through a rib plate I and a rib plate II respectively, and the center line of the spoiler body is perpendicular to the center line of the inner barrel; end covers are mounted at two ends of the inner barrel, and a sensor I, a sensor II and a circuit board provided with an emitting unit are inlaid on the left end cover; a left half shaft of a stepped shaft extends out of a center hole in the left end cover, and an exciter is mounted at the end part of the left half shaft; the left half shaft is sleeved with a pretightening spring, and the pretightening spring is propped against the left end cover and a shoulder of a right half shaft of the stepped shaft; the right half shaft crimps the piezoelectric stacks on the right end cover through an anti-torsion plate. The river monitoring device has the advantages as follows: power is generated under the solid-fluid action without outside energy and electromagnetic interference, and true real-time online monitoring can be realized; the monitoring device is simple in structure, has small radial dimension and easily acquires required energy through series connection of the multiple piezoelectric stacks; structure parameters of a power generation unit are reasonable, and the energy conversion efficiency and the reliability are high.

Description

technical field [0001] The invention belongs to the technical field of river monitoring, and in particular relates to a river monitoring device based on piezoelectric stacks. Background technique [0002] There are thousands of rivers all over the territory of our country. In recent years, due to insufficient treatment of industrial waste water, soil erosion, improper use of pesticides and chemical fertilizers, etc., most rivers have been polluted to a certain extent. Nearly a quarter of the rivers or river sections cannot meet the basic requirements due to pollution. irrigation needs. 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...

AI Technical Summary

Problems solved by technology

Although some of the proposed monitoring methods are relatively mature at the technical level, they have not been popularized and applied on a large scale. One of the main reasons is that the power supply problem of the monitoring system has not been well resolved.

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