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Sampling circuit module

A sampling module and sampling circuit technology, applied in the field of signal processing, can solve the problems of large error and noise in the results, and achieve the effect of accurate sampling results

Pending Publication Date: 2022-04-12
PONOVO POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the existing technology uses high-precision sampling circuits to sample AC current, DC current, AC voltage and DC voltage, it mainly uses sampling circuits composed of current transformers, amplifiers and resistors to perform sampling. When electrical signals are sampled, it is easy to introduce various noises and errors, and in the subsequent filtering and noise reduction, the obtained results have large errors

Method used

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Embodiment Construction

[0020] The characteristics and exemplary embodiments of various aspects of the application will be described in detail below. In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only intended to explain the present application rather than limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0021] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and d...

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Abstract

The embodiment of the invention provides a sampling circuit module. The module comprises a first sampling module, a second sampling module and a third sampling module, the first sampling module is used for collecting an alternating current signal output by a tested device to obtain a first voltage signal; the second sampling module is used for collecting a direct current signal output by the tested equipment to obtain a second voltage signal; and the third sampling module is used for acquiring an alternating current or direct current voltage signal output by the tested equipment to obtain a third voltage signal. The first sampling module comprises a current mutual inductance unit and an amplification unit, and the current mutual inductance unit corresponds to different coil turns through different first switches. According to the sampling circuit module provided by the embodiment of the invention, the current signal and the voltage signal can be sampled, and meanwhile, the closed first switch can be determined according to the alternating current signal, so that the number of turns of the coil of the current mutual inductance unit is determined, and a more accurate alternating current sampling result is obtained.

Description

technical field [0001] The application belongs to the technical field of signal processing, and in particular relates to a sampling circuit module. Background technique [0002] At present, when performing signal processing, in order to analyze and filter the electrical signal, it is necessary to sample the electrical signal. When the existing technology uses high-precision sampling circuits to sample AC current, DC current, AC voltage and DC voltage, it mainly uses sampling circuits composed of current transformers, amplifiers and resistors to perform sampling. When electrical signals are sampled, it is easy to introduce various noises and errors, and in the subsequent filtering and noise reduction, the obtained results have large errors. Contents of the invention [0003] The embodiment of the present application provides a sampling circuit module, which can determine the number of coil turns of the current transformer according to the obtained AC current signal, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/18G01R19/00G01R1/30
Inventor 徐孟龙李俊时旭徐广腾王绍坤彭军马媛媛张明晖张涛陈斌
Owner PONOVO POWER
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