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Voltage measurement device and method

A technology of voltage measurement and measurement quantity, applied in the field of voltage measurement devices, can solve the problems of voltage measurement interruption, missed measurement, open circuit, inaccurate measurement, etc.

Inactive Publication Date: 2021-11-19
BEIJING HUAFENG TEST & CONTROL TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since it takes a certain amount of time to select the switch action, the solution in the traditional technology will cause the voltage measurement channel to be disconnected during the selection switch action process, resulting in interruption and missing measurement of the voltage measurement, resulting in inaccurate measurement
Moreover, the measurement signal exceeds the switching range, which will also lead to inaccurate measurement.

Method used

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  • Voltage measurement device and method

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Embodiment Construction

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0027] It can be understood that the terms "first", "second" and the like used in this application may be...

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Abstract

The invention relates to a voltage measurement device and method. The device comprises a maximum range measurement unit which comprises a fixed gain amplifier and a first analog-to-digital converter; the fixed gain amplifier scales the to-be-measured signal by a fixed multiple, and the first analog-to-digital converter measures the to-be-measured signal to obtain a first voltage value; an adjustable range measurement unit comprises an adjustable gain amplifier and a second analog-to-digital converter which are connected; the adjustable gain amplifier scales the to-be-measured signal by an adjustable multiple, and the second analog-to-digital converter measures the to-be-measured signal to obtain a second voltage value; a processor is used for controlling the adjustable gain amplifier to adjust the adjustable multiple to correspond to a target range when a range selection instruction containing the target range is received and the target range is a measurement range of the adjustable range measurement unit; when the adjustable gain amplifier adjusts the adjustable multiple or the scaled to-be-measured signal is out of the measurement range of the second analog-to-digital converter, a first voltage value is output. The device can realize continuous measurement of voltage.

Description

technical field [0001] The present application relates to the technical field of circuit measurement, in particular to a voltage measurement device and method. Background technique [0002] With the development of electronic circuit technology, people have higher and higher requirements for the continuity and accuracy of measuring voltage. For different voltage signals, it is necessary to use different ranges to measure, so as to improve the accuracy of measurement. [0003] In the traditional technology, the switching of the range is realized by controlling the action of the selection switch. [0004] However, since it takes a certain amount of time to select the switch action, the solution in the conventional technology will cause the voltage measurement channel to be disconnected during the selection switch action process, thereby causing interruption and missing measurement of the voltage measurement, resulting in inaccurate measurement. Moreover, if the measurement si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 孙衍翀周鹏
Owner BEIJING HUAFENG TEST & CONTROL TECH CO LTD
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