Rectifier circuit for piezoelectric energy collectors

A rectifier circuit, piezoelectric energy technology, applied in electrical components, output power conversion devices, conversion of AC power input to DC power output, etc. Energy harvester efficiency and other issues, to achieve the effect of improving efficiency, reducing power consumption, and low power consumption

Active Publication Date: 2015-10-28
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this new design for an electronic device called an Energy Harvester (EH), there are two main technical features: 1) it uses less electricity than traditional designs while still delivering good performance; 2) it achieves better energy collection compared with previous versions without sacrificing their functionality or reliability.

Problems solved by technology

This patented technical solution described in the patents relates to improving the performance and longevity of electronic sensors node's own power source system without sacrificially replacing or rebuilding their entirety. Current methods are either slow down or require frequent replacements altogether. Therefore there exists a challenge where these systems may be unable to provide sufficient power when needed.

Method used

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  • Rectifier circuit for piezoelectric energy collectors
  • Rectifier circuit for piezoelectric energy collectors
  • Rectifier circuit for piezoelectric energy collectors

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0015] Such as figure 1 and figure 2 As shown, the present invention includes a full-wave rectifier bridge 2 and an active diode circuit 4, and also includes a bias circuit 3, and the output terminals of the full-wave rectifier bridge 2 are respectively connected to the input ends of the active diode circuit 4 and the bias circuit 3, and the bias circuit The output terminal of the setting circuit 3 is connected to the bias voltage terminal of the comparator in the active diode circuit 4, and the output terminal of the active diode circuit 4 is connected to the energy storage capacitor C3.

[0016] The working principle of the present invention is: the electric energy generated by the piezoelectric energy harvester 1 is sent to the full-wave rectifier bridge 2, and after rectification, the electric energy is sent to the low-energy storage unit C1, and the low-e

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Abstract

The invention discloses a rectifier circuit for piezoelectric energy collectors to solve the problem that the energy consumption of an existing circuit is high and the efficiency of a piezoelectric energy collector is low when the rectifier voltage of the piezoelectric energy collector is greater than 2.5 V. The rectifier circuit comprises a full-wave rectifier bridge (2) and an active diode circuit (4), and further comprises a bias circuit (3). The output end of the full-wave rectifier bridge (2) is connected with the input ends of the active diode circuit (4) and the bias circuit (3). The output end of the bias circuit (3) is connected with the bias voltage end of a comparator in the active diode circuit (4). The output end of the active diode circuit (4) is connected with an energy storage capacitor C3. The rectifier circuit for piezoelectric energy collectors has the advantages of being low in power consumption, high in energy conversion efficiency, and capable of ensuring the energy demand of wireless sensor network node load.

Description

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Claims

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Application Information

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Owner CHONGQING UNIV
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