CN104572388B - Data filtering system, data filtering device and method - Google Patents
Data filtering system, data filtering device and method Download PDFInfo
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- CN104572388B CN104572388B CN201310479841.0A CN201310479841A CN104572388B CN 104572388 B CN104572388 B CN 104572388B CN 201310479841 A CN201310479841 A CN 201310479841A CN 104572388 B CN104572388 B CN 104572388B
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Abstract
The invention provides a data filtering system, device and method. The data filtering system comprises an acquisition module, a derivation module, a transformation module and a convolution module, wherein the acquisition module is used for acquiring an S parameter model of a test fixture; the derivation module is used for deriving the acquired S parameter model to obtain a frequency domain filter file; the transformation module is used for performing inverse Fourier transform on the frequency domain filter file to obtain a time domain filter file; the acquisition module is also used for acquiring a waveform data file; the convolution module is used for performing convolution operation on the acquired waveform data file and the acquired time domain filter file to obtain a filtered waveform data file. According to the data filtering system, device and method provided by the invention, the influence of the S parameter model in the test fixture on test results can be reduced, so that the accuracy of test is improved.
Description
Technical field
The present invention relates to a kind of data filtering system, data filtering device and method.
Background technology
Refer to the schematic diagram that Fig. 1 show serial communication link under prior art.This serial communication link 1 includes sending
Machine 11, transmission channel 12 and receiver 13.Refer to Fig. 2 and show prior art measurement jig test serial communication link signal
Schematic diagram.This measurement jig 14 is connected to the outfan of transmission channel 12, for testing to the signal exporting.This test
Tool 14 is analyzed obtaining a Wave data file to the signal of output by a parameter model.Parameter mould under prior art
Type includes an insertion loss factor, and it is a transmission function, and for transmitting signal, but it is during to signal transmission
Certain loss can be produced to signal, thus affecting the accuracy of test result.
Content of the invention
Present invention is primarily targeted at providing a kind of data filtering system, device and method it is intended to solve above-mentioned test
The inaccurate problem of result.
The present invention provides a kind of data filtering system, for passing through s parameter model to serial communication link to measurement jig
Serial signal test gained Wave data file be filtered, this data filtering system includes:
Acquisition module, for obtaining the s parameter model of measurement jig；
Derivation module, for obtaining a frequency domain filter file to the s parameter model derivation obtaining；
Conversion module, obtains a time domain filtering file for frequency domain filter file is carried out with inverse fourier transform；
This acquisition module, is additionally operable to obtain Wave data file；
Convolution module, obtains a filter for the Wave data file of acquisition and time domain filtering file are carried out convolution algorithm
Wave data file after ripple；
Detecting module, for detecting whether this Wave data file can carry out convolution algorithm with time domain filtering file；And
Modular converter, the form for changing this Wave data file is a preset format, wherein, the ripple of this preset format
Graphic data file can carry out convolution algorithm with time domain filtering file.
The present invention also provides a kind of data filtering device, and this data filtering device is used for passing through s parameter mould to measurement jig
The Wave data file that type tests gained to the serial signal of serial communication link is filtered, and this data filtering device includes
Processing unit, this processing unit is used for obtaining the s parameter model of measurement jig, the s parameter model obtaining is differentiated and obtains one
Frequency domain filter file, carries out inverse fourier transform and obtains a time domain filtering file, obtain waveform to frequency domain filter file
Data file, the Wave data file of acquisition and time domain filtering file is carried out convolution algorithm and obtains a filtered waveform number
According to file, this processing unit is additionally operable to detect whether this Wave data file can carry out convolution algorithm with time domain filtering file,
When this Wave data file can not carry out convolution algorithm with time domain filtering file, the form changing this Wave data file is
One preset format, wherein, the Wave data file of this preset format can carry out convolution algorithm with time domain filtering, and by default lattice
The Wave data file of formula and time domain filtering file carry out convolution algorithm and obtain a filtered Wave data file.
The present invention also provides a kind of data filtering methods, and this data filtering methods is used for passing through s parameter mould to measurement jig
The Wave data file that type tests gained to the transmission information of serial communication interface is filtered, this data filtering methods include with
Lower step:
Obtain the s parameter model of measurement jig；
The s parameter model obtaining is differentiated and obtains a frequency domain filter file；
Frequency domain filter file is carried out with inverse fourier transform and obtains a time domain filtering file；
Obtain Wave data file；
The Wave data file of acquisition and time domain filtering file are carried out convolution algorithm and obtains a filtered waveform number
According to file；
Detect whether this Wave data file can carry out convolution algorithm with time domain filtering file；
When this Wave data file can not carry out convolution algorithm with time domain filtering file, change this Wave data file
Form be a preset format, wherein, the Wave data file of this preset format can carry out convolution fortune with time domain filtering file
Calculate；And
The Wave data file of preset format and time domain filtering file are carried out convolution algorithm and obtains a filtered ripple
Graphic data file.
Data filtering system that the present invention provides, device and method, by one is carried out to the s parameter model of measurement jig be
The process of row, the Wave data that the result of process and measurement jig are obtained carries out the Wave data after convolution algorithm is processed
File, reduces the impact to test result for the s parameter model in measurement jig, improves the accuracy of test.
Brief description
Fig. 1 is the schematic diagram of prior art serial communication link.
Fig. 2 tests the schematic diagram of serial communication link signal for prior art measurement jig.
Fig. 3 is a kind of hardware schematic of data filtering system.
Fig. 4 is prior art measurement jig test result schematic diagram.
Fig. 5 is existing filtered Software to corresponding result schematic diagram after the data filtering of measurement jig.
Fig. 6 is for the data filtering system in this case to corresponding result schematic diagram after the data filtering of measurement jig.
Fig. 7 is a kind of flow chart of data filtering methods.
Main element symbol description
| Serial communication link | 1 |
| Transmitter | 11 |
| Transmission channel | 12 |
| Receiver | 13 |
| Measurement jig | 14 |
| Display unit | 15 |
| Data filtering device | 100 |
| Processing unit | 20 |
| Acquisition module | 21 |
| Derivation module | 22 |
| Conversion module | 23 |
| Convolution module | 24 |
| Display module | 25 |
| Detecting module | 26 |
| Modular converter | 27 |
| Data filtering system | 200 |
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Specific embodiment
Refer to the schematic diagram that Fig. 3 show data filtering system 200 of the present invention.This data filtering system 200 runs on
On one data filtering device 100.This data filtering device 100 includes a processing unit 20 and a display unit 15.
This data filtering system 200 includes several modules, and this several module is processed performed by unit 20.This is some
Individual module includes an acquisition module 21, a derivation module 22, a conversion module 23, a convolution module 24 and a display module 25.
This acquisition module 21 is used for obtaining the s parameter model of measurement jig 14.In present embodiment, corresponding one of each measurement jig
S parameter model, this s parameter model is existing, will not be described in detail herein.This derivation module 22 is used for the s parameter model obtaining
Derivation obtains the file of a frequency domain filter.This conversion module 23 obtains for carrying out inverse fourier transform to frequency domain filter file
To a time domain filtering file.This acquisition module 21 is additionally operable to obtain Wave data file.This convolution module 24 is used for obtaining
Wave data file and time domain filtering file carry out convolution algorithm and obtain a filtered Wave data file.This display mould
Block 25 is used for showing filtered Wave data file in display unit 10.
It is illustrated in figure 4 the result schematic diagram that measurement jig under prior art tests serial signal, in this application interface
By elliptical coil live for eye pattern characteristic parameter in Wave data file, its corresponding numerical value is 331.39944, this application interface
Shown below for the corresponding oscillogram of Wave data file.It is illustrated in figure 5 existing filtered Software the data of measurement jig is filtered
Corresponding result schematic diagram after ripple, in this application interface, eye pattern characteristic parameter numerical value is 424.44260.It is illustrated in figure 6 this
Data filtering device in invention is to corresponding result schematic diagram after the data filtering of measurement jig, in this application interface, eye
The corresponding numerical value of figure characteristic parameter is 419.15372.Can be seen that the number using the present invention from above-mentioned data and oscillogram
Almost can reach according to filter, with existing filtered Software, identical effect be filtered to Wave data file.
Further, this processing unit 20 also includes a detecting module 26 and a modular converter 27.This detecting module 26
For detecting whether this Wave data file can carry out convolution algorithm with time domain filtering file.In present embodiment, test is controlled
The entitled .csv of suffix of Wave data file that tool test obtains, it is not the file of a clear data form, therefore cannot with when
Domain wave filter file carries out convolution algorithm.This modular converter 27 is used for can not be with time domain filtering file in this Wave data file
When carrying out convolution algorithm, the form changing this Wave data file is a preset format, wherein, the Wave data of this preset format
File can carry out convolution algorithm with time domain filtering file.In present embodiment, after the Wave data file of this preset format
Sew entitled .sp, it is the file of a clear data form, therefore can carry out convolution algorithm with time domain filtering file.
It is illustrated in figure 7 a kind of flow chart of data filtering methods.
Step s601, this acquisition module 21 obtains the parameter model of measurement jig 14.
Step s602, this derivation module 22 obtains the file of a frequency domain filter to the parameter model derivation obtaining.
Step s603, this conversion module 23 carries out inverse fourier transform to frequency domain filter file and obtains a time domain filtering
File.
Step s604, this acquisition module 21 obtains Wave data file.
Step s605, this detecting module 26 detects whether this Wave data file can carry out convolution with time domain filtering file
Computing.
Step s606, when this Wave data file can not carry out convolution algorithm with time domain filtering file, this modulus of conversion
The form that block 27 changes this Wave data file is a preset format.
Step s607, the Wave data file of preset format and time domain filtering file are carried out convolution by this convolution module 24
Computing obtains a filtered Wave data file.
Claims (6)
1. a kind of data filtering system, for being filtered to Wave data file, this Wave data file leads to for measurement jig
The serial signal test gained crossing s parameter model to serial communication link is it is characterised in that this data filtering system includes:
Acquisition module, for obtaining the s parameter model of measurement jig；
Derivation module, for obtaining a frequency domain filter file to the s parameter model derivation obtaining；
Conversion module, obtains a time domain filtering file for frequency domain filter file is carried out with inverse fourier transform；
This acquisition module, is additionally operable to obtain Wave data file；
Detecting module, whether the Wave data file for detecting acquired in this acquisition module can be carried out with time domain filtering file
Convolution algorithm；
Convolution module, obtains after a filtering for the Wave data file of acquisition and time domain filtering file are carried out convolution algorithm
Wave data file；And
Modular converter, the form for changing this Wave data file is a preset format, wherein, the waveform number of this preset format
Convolution algorithm can be carried out according to file with time domain filtering file.
2. data filtering system as claimed in claim 1 it is characterised in that: this system also includes:
Display module, for showing filtered Wave data file.
3. a kind of data filtering device, this data filtering device is used for Wave data file is filtered, this Wave data literary composition
Part for measurement jig pass through s parameter model gained is tested to the serial signal of serial communication link it is characterised in that: the filter of this data
Wave apparatus include processing unit, and this processing unit is used for obtaining the s parameter model of measurement jig, to the s parameter model obtaining
Differentiate and obtain a frequency domain filter file, frequency domain filter file is carried out with inverse fourier transform and obtains a time domain filtering literary composition
Part, obtains Wave data file, the Wave data file of acquisition and time domain filtering file is carried out convolution algorithm and obtains a filter
Wave data file after ripple, whether this processing unit is additionally operable to detect Wave data file acquired in this acquisition module can be with
Time domain filtering file carries out convolution algorithm, can not carry out convolution algorithm with time domain filtering file in this Wave data file
When, the form changing this Wave data file is a preset format, and wherein, the Wave data file of this preset format can be with time domain
Wave filter carries out convolution algorithm, and the Wave data file of preset format and time domain filtering file are carried out convolution algorithm obtains
One filtered Wave data file.
4. data filtering device as claimed in claim 3 it is characterised in that: this data filtering device also includes a display list
Unit, this processing unit is additionally operable to show filtered Wave data file on display unit.
5. a kind of data filtering methods, this data filtering methods is used for Wave data file is filtered, this Wave data literary composition
Part for measurement jig pass through s parameter model gained is tested to the transmission information of serial communication interface it is characterised in that: the filter of this data
Wave method comprises the following steps:
Obtain the s parameter model of measurement jig；
The s parameter model obtaining is differentiated and obtains a frequency domain filter file；
Frequency domain filter file is carried out with inverse fourier transform and obtains a time domain filtering file；
Obtain Wave data file；
The Wave data file of acquisition and time domain filtering file are carried out convolution algorithm and obtains a filtered Wave data literary composition
Part；
Detect whether the Wave data file acquired in this acquisition module can carry out convolution algorithm with time domain filtering file；
When this Wave data file can not carry out convolution algorithm with time domain filtering file, change the lattice of this Wave data file
Formula is a preset format, and wherein, the Wave data file of this preset format can carry out convolution algorithm with time domain filtering file；And
The Wave data file of preset format and time domain filtering file are carried out convolution algorithm and obtains a filtered waveform number
According to file.
6. data filtering methods as claimed in claim 5 it is characterised in that: the method is further comprising the steps of:
Show filtered Wave data file.
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| CN110046435B (en) * | 2019-04-19 | 2023-06-09 | 湖南银河电气有限公司 | Integrated digital filtering harmonic wave display method and system |
| CN116699454A (en) * | 2023-07-07 | 2023-09-05 | 深圳市大亮智造科技有限公司 | Power failure detection system and detection method for power detection equipment |
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| CN102291140A (en) * | 2010-04-15 | 2011-12-21 | 特克特朗尼克公司 | Method for Compensating a Frequency Characteristic of an Arbitrary Waveform Generator |
| CN102640184A (en) * | 2009-10-20 | 2012-08-15 | 苹果公司 | Temporal filtering techniques for image signal processing |
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| US9927485B2 (en) * | 2011-09-23 | 2018-03-27 | Tektronix, Inc. | Enhanced AWG waveform calibration using S-parameters |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102640184A (en) * | 2009-10-20 | 2012-08-15 | 苹果公司 | Temporal filtering techniques for image signal processing |
| CN102291140A (en) * | 2010-04-15 | 2011-12-21 | 特克特朗尼克公司 | Method for Compensating a Frequency Characteristic of an Arbitrary Waveform Generator |
Non-Patent Citations (1)
| Title |
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| 航空重力数据谐波小波滤波中卷积运算的处理;田颜锋等;《海洋测绘》;20100331;第30卷(第2期);第4-6页 * |
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Effective date of registration: 20180403 Address after: The 300457 Tianjin economic and Technological Development Zone Haiyun Street No. 80 Patentee after: Hongfujin Precision Electronics (Tianjin) Co., Ltd. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Co-patentee before: Hon Hai Precision Industry Co., Ltd. Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. |
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