Electromagnetic type nonlinear resonance upscaling vibration energy collecting device

Abstract

The invention relates to an electromagnetic type nonlinear resonance upscaling vibration energy collecting device, comprising two grades of vibrating systems, wherein the first grade comprises low frequency/high frequency vibration energy collecting subsystems, and copper coils of two collecting systems are vibrated in a nonuniform magnetic field, and generates power energy to output; the second grade vibrating system comprises a supporting spring, a permanent magnet combination and a first grade system. When vibration happens, the second grade vibrating system is under a resonance state, and the vibration response is odd harmonic component, primary and third harmonic components mainly; as the basic excitation, the low frequency collecting subsystem and the high frequency collecting subsystem are under a resonance state. The vibration energy collecting device can redistribute the vibration energy concentrated at low frequency to low frequency and high frequency vibrations. The invention is applicable to the vibration energy collection of aerospace, ship, and bridge building engineering structures, and particularly applicable to the engineering environment with weak vibration intensity; the device can provide power energy for the energy self-supply device and the wireless sensor network in the vibration control and health monitoring system.

Description

technical field [0001] The invention relates to energy collection technology, in particular to an electromagnetic nonlinear resonance up-frequency vibration energy collection device. Background technique [0002] Energy harvesting technology is a very promising clean energy technology, which is an energy technology that uses ambient energy to power small and mobile electrical or electronic devices. Usually, these devices rely on traditional batteries to provide energy, but the disadvantage of traditional batteries is that the energy supply life is limited, so they need to be replaced or charged after a period of use. This is a serious constraint for wireless sensors placed in harsh environments or buried inside structures. However, vibration energy harvesting devices are not limited by connecting wires and do not need to be replaced frequently, making them suitable for powering wireless sensors in sensor networks. Therefore, the vibration energy harvester has become a hot ...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an electromagnetic nonlinear resonance frequency-up vibration energy collection device, which adopts the design of a two-pole vibration energy collection system. Even in the case of low environmental vibration frequency, the second-stage vibration system is in the main resonance state, wherein two Odd harmonics generated by a strong cubic nonlinear system composed of a ring permanent magnet (11) and a two-pole ring permanent magnet (12) trigger the resonance of the first-stage vibration system, which improves the energy collection efficiency, because the support spring (8) When the resonance is generated together, the vibration amplitude of the first-stage vibration set system is increased several times, further improving the output power of vibration energy, and solving the bottleneck of the existing linear acquisition device that cannot take into account both high-level power output and low-frequency working environment It is especially suitable for energy collection in weak-intensity vibration environments, and its column-shaped structure is simple and small in size, and the collection performance can be easily adjusted according to needs, saving production costs

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