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Input power supply type vibration energy obtaining interface circuit

An interface circuit and vibration energy technology, which is applied in the field of input power supply type vibration energy acquisition interface circuit, to achieve the effect of reducing voltage loss and improving voltage conversion efficiency

Active Publication Date: 2014-12-24
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, through the above process, it can be known that the conversion efficiency of the AC signal directly affects the response speed of the load to the sensor. Therefore, how to improve the conversion efficiency of the AC signal is currently a difficult problem.

Method used

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  • Input power supply type vibration energy obtaining interface circuit
  • Input power supply type vibration energy obtaining interface circuit
  • Input power supply type vibration energy obtaining interface circuit

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Embodiment Construction

[0034] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0035] Such as figure 1 As shown, an input power supply type vibration energy acquisition interface circuit is used to connect with the output end of the sensor, including: a rectifier circuit, a comparator, a POMS diode, a PMOS switch tube, and an energy storage element;

[0036] The rectification circuit is used to convert the negative amplitude of the first input signal into a positive amplitude to generate a second input signal; the first input signal is an AC signal output by the sensor;

[0037] The drain of the POMS switch tube is connected to the output terminal of the rectifier circuit, and its source is connected to the energy storage element and the load respectively, for performing voltage conversion on the second input signal;

[0038] The ...

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Abstract

The invention discloses an input power supply type vibration energy obtaining interface circuit. A drain electrode of a PMOS switching tube is connected with the output end of a rectifying circuit. A source electrode of the PMOS switching tube is connected with an energy storage element and a load. A drain electrode of a PMOS diode is connected with a grid electrode of the PMOS diode and the energy storage element. A source electrode of the PMOS diode is connected with the output end of the rectifying circuit. The first input end of a comparator is connected with the drain electrode of the PMOS switching tube, the second input end of the comparator is connected with the source electrode of the PMOS switching tube, and the output end of the comparator is connected with a grid electrode of the PMOS switching tube. Due to the fact that the drain electrode and the grid electrode of the PMOS diode are connected, the PMOS diode is only switched on for a moment when second input signals pass through the PMOS diode, the energy storage element accumulates the second input signals at the moment, and a weak voltage difference is formed at the two ends of the PMOS switching tube; after the comparator detects the voltage difference, the PMOS switching tube is switched on, voltage conversion is carried out on the second input signals through the PMOS switching tube, and the second input signals reach the load. According to the input power supply type vibration energy obtaining interface circuit, voltage losses of the PMOS switching tube are reduced, and therefore the efficiency of voltage conversion carried out on the second input signals through the PMOS switching tube is improved.

Description

technical field [0001] The invention relates to the field of analog integrated circuits and provides an input power supply type vibration energy acquisition interface circuit. Background technique [0002] The current sensors will output AC signals after detecting most of the energy fluctuations, and some load devices cannot directly introduce AC power to perform response work, which requires converting the above AC signals into DC signals; in addition, since the DC signal comes from the sensor, The voltage of the signal is not up to the working standard of the load equipment, so further voltage conversion (that is, step-up or step-down processing of the signal) is required for the above-mentioned DC signal. Therefore, through the above process, it can be known that the conversion efficiency of the AC signal directly affects the response speed of the load to the sensor. Therefore, how to improve the conversion efficiency of the AC signal is a difficult problem at present. ...

Claims

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Application Information

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IPC IPC(8): H02M7/217
Inventor 杨正杨银堂王静敏朱樟明
Owner XIDIAN UNIV
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