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Micro power supply with peak value monitoring switching circuit and operation method thereof

A switching circuit, peak monitoring technology, applied in the measurement of current/voltage, piezoelectric effect/electrostrictive or magnetostrictive motor, measurement of electrical variables, etc., can solve the lack of theoretical analysis and design calculation methods, power output efficiency low, and cannot be theoretically analyzed and predicted to achieve the effect of improving energy collection and utilization efficiency

Inactive Publication Date: 2015-08-12
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] ① The power output efficiency of the micro piezoelectric vibration generating mechanism is relatively low
The current micro-power supply based on the micro-piezoelectric cantilever vibration power generation mechanism uses a peripheral interface circuit composed of a filter capacitor and a diode rectifier bridge. The structure is relatively simple, but the output efficiency is relatively low because it does not use the micro-piezoelectric The total electrical energy output generated by the vibration generating mechanism
[0007] ② Lack of accurate theoretical analysis and design calculation methods
Since the natural frequency and power output of the micro power supply cannot be accurately analyzed and predicted according to the structural design parameters, it is impossible to carry out theoretical calculation and design of the structural parameters for the specific application environment (vibration frequency) and technical index requirements (power supply) , but can only focus on empirical design and experimental test analysis, the design and production cycle is relatively long, and the waste is relatively large

Method used

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  • Micro power supply with peak value monitoring switching circuit and operation method thereof
  • Micro power supply with peak value monitoring switching circuit and operation method thereof
  • Micro power supply with peak value monitoring switching circuit and operation method thereof

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Embodiment 1

[0053] Such as Figure 6 As shown, a peak detection switch circuit includes:

[0054] The rectifier bridge BR1, the input end of the rectifier bridge BR1 is the input end of the peak detection switch circuit; the cathode of the first diode D1 is connected in series with the first capacitor C1, and connected in parallel to the output end of the rectifier bridge BR1; The junction point between the cathode of the first diode D1 and the first capacitor C1 is connected to the emitter of the PNP transistor Q1, the base of the PNP transistor Q1 is connected to the anode of the first diode D1, and the PNP transistor Q1 The collector of the second diode D2 is connected to the anode of the second diode D2, the cathode of the second diode D2 is connected to the base of the NPN transistor Q2, and the collector of the NPN transistor Q2 is connected to the cathode of the third diode D3, The anode of the third diode D3 is connected to the base of the PNP transistor Q1, the emitter of the NP...

Embodiment 2

[0059] Such as figure 1 As shown, a micro power supply based on a micro-piezoelectric cantilever vibration power generation mechanism, including: a micro-piezoelectric cantilever vibration power generation mechanism, the micro-piezoelectric cantilever vibration power generation mechanism is connected to a peak value monitoring switch circuit;

[0060] The peak value monitoring switch circuit includes a rectifier bridge BR1, the input end of the rectifier bridge BR1 is connected to the output end of the micro piezoelectric cantilever beam type vibration power generation mechanism; the cathode of the first diode D1 is connected in series with the first capacitor C1 , connected in parallel to the output end of the rectifier bridge BR1; the junction point of the cathode of the first diode D1 and the first capacitor C1 is connected to the emitter of the PNP transistor Q1, and the base of the PNP transistor Q1 is connected to To the anode of the first diode D1, the collector of the ...

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Abstract

The invention discloses a micro power supply with a peak value monitoring switching circuit and an operation method thereof. The micro power supply with the peak value monitoring switching circuit comprises a micro-piezoelectric cantilever beam type vibration power generating mechanism. The output end of the micro-piezoelectric cantilever beam type vibration power generating mechanism is connected with the input end of a peak value monitoring switch circuit. The output end of the peak value monitoring switch circuit is connected with a load. When the voltage which is output from the micro-piezoelectric cantilever beam type vibration power generating mechanism reaches a peak value, the peak value monitoring switch circuit is on, thereby supplying electric energy to the load.

Description

technical field [0001] The invention belongs to the field of micro energy sources and self-powered micro wireless sensors, and in particular relates to a micro power supply using a peak value monitoring switch circuit and a working method thereof. Background technique [0002] Micro piezoelectric vibration power generation technology is one of the key technologies for the development of wireless sensing technology towards miniaturization and practicality. Among the existing energy recovery technologies, the vibration energy recovery technology based on piezoelectric materials is the most promising, because it has high energy density, simple structure, easy system integration, low cost and no electromagnetic interference. features. The micro power supply made by MEMS technology can miniaturize and batch the device, so that it can be better integrated with other electronic devices such as wireless sensor nodes that have been gradually miniaturized, and finally realize self-po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18G01R19/165
Inventor 霍睿崔兴可王志东张道坤
Owner SHANDONG UNIV