Power management unit used for multi-channel micro-strain data acquisition system

A technology of a data acquisition system and a power management unit, which is applied in the fields of measuring electricity, measuring electrical variables, and components of electrical measuring instruments, etc., can solve the problems of difficulty in accurate sampling and many micro-strain monitoring nodes.

Active Publication Date: 2015-08-12
SHANGHAI UNIV OF ENG SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many micro-strain monitoring nodes in the project, and long-term monitoring is required, which brings difficulties to the management of the power supply for a multi-channel micro-strain data acquisition system to ensure accurate sampling of the multi-channel micro-strain data acquisition system

Method used

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  • Power management unit used for multi-channel micro-strain data acquisition system
  • Power management unit used for multi-channel micro-strain data acquisition system
  • Power management unit used for multi-channel micro-strain data acquisition system

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Embodiment Construction

[0016] see figure 1 In order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below through specific embodiments in conjunction with the accompanying drawings:

[0017] A power management unit for a multi-channel micro-strain data acquisition system of the present invention includes a boost conversion integrated circuit 1, a low-dropout linear voltage stabilization integrated circuit 2, a step-down conversion integrated circuit 3, a low-dropout negative power supply voltage stabilization integrated circuit 4, Reverse polarity conversion integrated circuit 5, reference source integrated circuit 6, integrated operational amplifier 7 and integrated voltage comparator. A power management unit for a multi-channel micro-strain data acquisition system of the present invention is used to provide the multi-channel micro-strain data acquisition system with a high-stable working power supply required for ...

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Abstract

The invention discloses a power management unit used for a multi-channel micro-strain data acquisition system in the field of instrument detection. The power management unit comprises an integrated voltage comparator, and a boost conversion integrated circuit and a low-dropout linear integrated regulator which are connected in sequence, wherein an input end of the boost conversion integrated circuit is used for receiving an in-phase input signal VB output by a power supply of the multi-channel micro-strain data acquisition system and outputting a boost signal of 5.5 V; the low-dropout linear integrated regulator receives the boost signal output by the boost conversion integrated circuit; a magnetic inductor is arranged between inverted input ends between an output end of the low-dropout linear integrated regulator and the integrated voltage comparator, and is used for outputting an inverted input signal VA; the integrated voltage comparator receives the inverted input signal VA output by the low-dropout linear integrated regulator; an in-phase input end of the integrated voltage comparator is used for receiving the in-phase input signal VB; the amplitude of the inverted input signal VA is greater than or equal to the amplitude of the in-phase input signal VB; the output of the integrated voltage comparator is 0, otherwise the output of the integrated voltage comparator is 1.

Description

technical field [0001] The invention relates to a power management unit for a multi-channel micro-strain data acquisition system in the field of instrument detection. Background technique [0002] Due to the complexity of geological conditions, natural environment and other factors in engineering buildings, bridges, reservoir dams and other fields, people still have certain limitations in understanding, and cannot foresee all engineering safety problems in design, so potential safety problems are unavoidable. Risk, many engineering accidents usually go through the process of deterioration from the change of behavior, so engineering safety monitoring is an effective method to discover engineering hidden dangers in time. Through instrument monitoring and manual patrol inspection, systematic monitoring and testing of projects can obtain relevant information about project safety in time, detect abnormal symptoms early, and take countermeasures to ensure project safety. Therefor...

Claims

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Application Information

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IPC IPC(8): H02M3/04G01R1/28
Inventor 李荣正戴国银陈学军
Owner SHANGHAI UNIV OF ENG SCI
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