Self-powered type wireless tunnel health monitoring device based on vibration electricity generation

Abstract

The invention discloses a self-powered type wireless tunnel health monitoring device based on vibration electricity generation. The self-powered type wireless tunnel health monitoring device based on vibration electricity generation comprises a wireless monitoring device and a multi-direction piezoelectric vibration energy collection device, wherein the multi-direction piezoelectric vibration energy collection device supplies power for the wireless monitoring device and comprises a substrate, a vibration rod and at least three L-type piezoelectric power generation wafers; the vibration rod and the substrate are perpendicular and separated; one end of each L-type piezoelectric power generation wafer is fixedly connected with the vibration rod; the other end of each L-type piezoelectric power generation wafer is fixedly connected with the substrate; the L-type piezoelectric power generation wafers are evenly distributed around the vibration rod. According to the self-powered type wireless tunnel health monitoring device based on vibration electricity generation, the multi-direction piezoelectric vibration energy collection device is utilized for collecting vibration energy in each direction and converting the energy into electricity, the electricity collected and converted by the multi-direction piezoelectric vibration energy collection device is utilized for providing continuous power for a monitoring sensor, and the cost is lower than the human cost for replacing batteries or construction cost for arranging electric wires.

Description

technical field [0001] The invention relates to the field of tunnel engineering health monitoring, in particular to a self-powered wireless tunnel health monitoring device based on vibration power generation. Background technique [0002] After the tunnel project is put into use, with the increase of the service life, the problem of structural aging has become increasingly prominent, and tunnel diseases have continued to develop. Affected by many factors such as operating environment, geological conditions, groundwater, construction quality and material properties, the distribution of tunnel diseases is discrete and time-sensitive. In view of the above-mentioned characteristics of tunnel diseases, higher requirements are put forward for the flexible arrangement, on-demand increase and decrease, and continuous operation of tunnel health monitoring sensors. [0003] Existing wireless sensors for structural monitoring generally adopt two modes of external circuit power supply ...

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Problems solved by technology

[0006] Purpose of the invention: In order to solve the defect that the wireless sensors in the prior art cannot provide sufficient and continuous power supply, provide a self-powered wireless tunnel health monitoring device based on vibration power generation that can absorb vibrations in all directions

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