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Composite software filtering method and system applied to AD collection

A software filtering and composite technology, applied in the field of signal processing, can solve the problems of inability to effectively suppress the periodic interference of irregular high-frequency signals, poor smoothness, and large overall data deviation.

Active Publication Date: 2019-03-08
SHANDONG LUNENG SOFTWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above filtering methods can effectively suppress irregular high-frequency signals and periodic interference. In addition to the large deviation of the overall data, there is also the problem of poor smoothness.

Method used

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  • Composite software filtering method and system applied to AD collection
  • Composite software filtering method and system applied to AD collection
  • Composite software filtering method and system applied to AD collection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This scheme discloses a compound software filtering method applied in AD acquisition, such as Figure 9 shown, including:

[0048] Obtain the original time series data after AD conversion, and open up a certain space for sequential storage;

[0049] Take the latest continuous measured values ​​of N items and sort them to get a set of increasing or decreasing sequence {n 1 , n 2 ,...,n N};

[0050] Process the obtained increasing or decreasing sequence, and discard the X items of data at the front end and back end of the sequence respectively, where X is not greater than 0.5N, and average the remaining data to obtain a preprocessing value

[0051] Reacquire the latest continuous measured values ​​of N items for sorting, repeat the above operation M times, and finally obtain M items of preprocessing values.

[0052] Preferably, the value of M is greater than 5 and is a multiple of 5.

[0053] Define a window with a time period of T and a storage space of M, store ...

Embodiment 2

[0070] The invention discloses a composite software filtering system applied in AD acquisition, which includes a server, the server includes a memory, a processor, and a computer program stored in the memory and operable on the processor, the program implements The composite software filter applied in AD acquisition described in Example 1.

Embodiment 3

[0072]The invention discloses a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the compound software filtering method applied in AD acquisition described in the first embodiment is executed.

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PUM

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Abstract

The invention discloses a composite software filtering method and system applied to AD collection. The method comprises the following steps: taking N latest continuous measured values for sorting, andselecting a "half-insertion sorting" algorithm to obtain a group of arrays arranged according to a set sequence; processing the obtained arrays by using a median average filtering algorithm to obtainM preprocessed values; storing the obtained preprocessed values according to a timing sequence to obtain a group of arrays comprising M preprocessed values; respectively filtering M data within eachperiod by using an improved moving average filtering method to obtain a group of new arrays; and performing data smoothing processing on the new arrays. The composite software filtering method and system disclosed by the invention have the beneficial effects that the abnormal fluctuation of collected signals caused by external interference can be suppressed, the interference of external signals isavoided as much as possible, the error of data collection is reduced, and the stability of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a composite filtering method and system for performing software filtering processing on AD acquisition (converting analog signals into digital signals) signals. Background technique [0002] With the rapid development of electronic technology and digital technology, the transmission speed of signals and the processing speed of CPU are getting faster and faster, so the requirements for data acquisition and processing are also getting higher and higher. In the single-chip microcomputer hardware system, the analog-to-digital conversion circuit is a quantization process that converts the received analog signal into an equivalent digital quantity. The A / D chip equipped in it outputs a digital signal. By setting the sampling frequency in the program, the interrupt method is used. Or query method to obtain the voltage signal that the main CPU can receive. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02G01K1/02
CPCH03H17/0201H03H17/0219G01K1/02
Inventor 周晨曦律俊华何军田王运光李春飞李静梁兵胡超卜宪林陈东东孙波曹同利
Owner SHANDONG LUNENG SOFTWARE TECH
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