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Voltage sampling method and device

A voltage sampling and voltage value technology, applied in measuring devices, measuring current/voltage, measuring electrical variables, etc., can solve problems such as voltage value errors, and achieve the effect of avoiding errors and requiring low computing power

Active Publication Date: 2011-02-23
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a voltage sampling method and device for the defect that the voltage value collected by the existing voltage sampling circuit in the process of voltage rising or falling has a relatively large error

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  • Voltage sampling method and device

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Embodiment Construction

[0041] Such as figure 1 Shown is a flow chart of the first preferred embodiment of the voltage sampling method of the present invention. In this first embodiment, the voltage sampling method includes the following steps:

[0042] start.

[0043] Collection step S1: within a set time period, continuously collect multiple voltage values ​​with a preset time period, and store them.

[0044] The specific implementation process of the above collection step S1 is as follows:

[0045] Within the set time period t, multiple voltage values ​​are collected continuously with the preset time period T, and the voltage value collected for the first time is set to X 1 , and then the voltage value of the second acquisition is X 2 , followed by X for the third time 3  … and place the above X 1 、X 2 ......X N-1 、X N Stored in the storage space of the microcontroller. Wherein, both the set time period t and the preset time period T are pre-set according to actual needs. Generally, the ...

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Abstract

The invention relates to a voltage sampling method and a voltage sampling device. The sampling method comprises the following steps of: acquiring, namely continuously acquiring a plurality of voltage values according to a preset time period within a set period of time and storing; calculating, namely calculating the difference value of the voltage values acquired in adjacent time periods; comparing, namely comparing the difference value with a preset value, sending an abnormity identification signal if the difference value is greater than the preset value and sending a normality identification signal if the difference value is not greater than the preset value; outputting, namely, when the normality identification signal is received, outputting a plurality of stored voltages; and clearing, namely when the abnormity identification signal is received, clearing the plurality of stored voltages. Therefore, a voltage acquisition error in a voltage rising or falling process is avoided and the requirement on the operational capability of a processor is relatively low.

Description

technical field [0001] The present invention relates to voltage sampling technology, more specifically, to a voltage sampling method and device. Background technique [0002] In the existing voltage sampling circuits, in order to ensure the sampling accuracy, filtering technology is used to filter the sampling voltage. Currently, there are two main filtering methods: [0003] The first type: filter out the clutter of a specific frequency band through one of high-pass filter, low-pass filter, band-pass filter or a combination thereof; [0004] Its disadvantages are: in the actual hardware circuit, filtering needs to be implemented by building a corresponding filter circuit, which increases the cost of the hardware circuit. [0005] The second type: continuously collect multiple voltage values ​​within a certain period of time, find their average value, and take the average value as the sampling value; [0006] Its disadvantages are: in actual operation, it is necessary to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/165G01R19/17
Inventor 周明杰黄晓东
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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