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Precision AC voltage sampling device

An AC voltage and sampling device technology, applied in the field of precision AC voltage sampling devices, can solve the problems of narrow detection voltage range, narrow adaptable temperature range, poor anti-interference ability, etc., and achieves wide detection voltage range, wide temperature range and low power consumption. consumption effect

Inactive Publication Date: 2017-05-24
扬州海通电子科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a precision AC voltage sampling device to solve the problems of large volume, low precision, poor anti-interference ability, high temperature drift, high power consumption, narrow adaptable temperature range, detection Technical defect of technical problem with narrow voltage range

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Embodiment Construction

[0013] The present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0014] Such as figure 1 As shown, a precision AC voltage sampling device includes an AC voltage sampling node 1, a precision AC voltage sampling module 2, a sampling voltage display communication module 3, and an isolated auxiliary power supply 4. The precision AC voltage sampling module 2 includes a current-type voltage mutual inductance 21, a current-voltage conversion unit 22, a precision full-wave rectification unit 23 and a second-order low-pass filter 24, the AC voltage sampling node adopts two joints that can be connected to two-phase electricity and is connected to the current-type voltage transformer 21, A current-voltage conversion unit 22, a precision full-wave rectification unit 23, a second-order low-pass filter 24, and a sampling voltage display communication module 3, and the isolated auxiliary pow...

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Abstract

A precision AC voltage sampling device comprises an AC voltage sampling node, a precision AC voltage sampling module, a sample voltage display communication module, and an isolation auxiliary power supply; the AC voltage sampling node is connected in sequence with a current type voltage transformer, a current-voltage conversion unit, a precision full wave rectifier unit, a second order low pass filter and the sample voltage display communication module; the isolation auxiliary power supply is respectively connected with the precision AC voltage sampling module and the sample voltage display communication module. Compared with the prior art, the precision AC voltage sampling device uses the isolation auxiliary power supply module to measure power frequency AC voltage in the power grid or circuits in real time, and can display and report the data in real time; the precision AC voltage sampling device is small in size, high in precision, high in isolation, low in drift, low in power consumption, wide in temperature scope, wide in detection voltage scope, and wide in auxiliary power supply scope; the precision AC voltage sampling device can better suit power equipment, a power grid monitoring automation system and an industrial control monitoring system.

Description

technical field [0001] The invention relates to the technical field of precision samplers, in particular to a precision AC voltage sampling device. Background technique [0002] At present, most of the voltage sampling devices on the market have technical problems such as large volume, low precision, poor anti-interference ability, high temperature drift, high power consumption, narrow adaptable temperature range, and narrow detection voltage range. There are many problems mentioned above in automation system and industrial control monitoring system. Contents of the invention [0003] The purpose of the present invention is to provide a precision AC voltage sampling device to solve the problems of large volume, low precision, poor anti-interference ability, high temperature drift, high power consumption, narrow adaptable temperature range, detection A technical flaw in the technical problem of a narrow voltage range. [0004] Technical scheme of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/22
CPCG01R19/22
Inventor 黄鹭
Owner 扬州海通电子科技有限公司
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