Voltage measurement device and method
A voltage measurement and voltage value technology, applied in the field of voltage measurement devices, can solve problems such as inaccurate measurement, open circuit, voltage measurement interruption and missing measurement
Pending Publication Date: 2022-07-15
BEIJING HUAFENG TEST & CONTROL TECH CO LTD +1
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- Application Information
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Problems solved by technology
[0006] 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
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[0038] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the related drawings. Embodiments of the present application are presented in the accompanying drawings. However, the application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
[0039] 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 for the purpose of describing specific embodiments only, and are not intended to limit the application.
[0040] It will be understood that the terms "first", "second", etc. used in this application may be used herein to describe various ele...
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The invention relates to a voltage measuring 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; the adjustable range measuring 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; the 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 measuring range of the adjustable range measuring unit; when the adjustable gain amplifier adjusts the adjustable multiple, a first voltage value is output. According to the device, the voltage can be continuously measured in the process of switching the measuring range.
Description
[0001] This application claims the priority of the Chinese patent application with the application number 2021108530909 and the invention titled "Voltage Measurement Apparatus and Method" filed with the China Patent Office on July 27, 2021, the entire contents of which are incorporated herein by reference. [0002] This application claims the priority of the Chinese patent application with the application number 2021108517001 and the invention titled "Voltage Measurement Apparatus and Method" filed with the China Patent Office on July 27, 2021, the entire contents of which are incorporated herein by reference. technical field [0003] The present application relates to the technical field of circuit measurement, and in particular, to a voltage measurement device and method. Background technique [0004] With the development of electronic circuit technology, people have higher and higher requirements for the continuity and accuracy of the measured voltage. For different volta...
Claims
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Login to View More IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 孙衍翀周鹏
Owner BEIJING HUAFENG TEST & CONTROL TECH CO LTD