CN102508044B - Signal analysis device and configuration method thereof - Google Patents
Signal analysis device and configuration method thereof Download PDFInfo
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- CN102508044B CN102508044B CN201110368923.9A CN201110368923A CN102508044B CN 102508044 B CN102508044 B CN 102508044B CN 201110368923 A CN201110368923 A CN 201110368923A CN 102508044 B CN102508044 B CN 102508044B
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Abstract
The invention discloses a signal analysis device which comprises a preselector module, a fundamental wave frequency mixing module, a harmonic frequency mixing module, a local oscillator module, a data acquisition and processing module and a PC (Personal Computer) machine, wherein the preselector module is used for shunting signals of which frequencies are over a preset frequency threshold A according to the frequencies, respectively feeding the signals into the fundamental wave frequency mixing module and the harmonic frequency mixing module to carry out processing and converting the frequencies of the signals into required frequencies; the local oscillator module is used for providing local oscillator signals for the fundamental wave frequency mixing module and the harmonic frequency mixing module; the data acquisition and processing module is used for carrying out data acquisition and processing operation on the received signals; and the PC machine is used for controlling the modules through PXIe (Pci Express-extensions-for-instrumentation) buses. By the technical scheme disclosed by the invention, the problems of single function of a signal analysis instrument and incompatibility of instruments of different manufacturers in the prior art can be solved. The invention also discloses a method for configurating the signal analysis device.
Description
Technical field
The present invention relates to Instrument technology field, particularly relate to a kind of signal analysis device and collocation method thereof.
Background technology
At present, equipment preparation generates unit unified system architecture of neither one in test safeguards system hardware and software information interface aspect, causes the test macro function singleness of equipment, and the test Support Equipment of each family cannot be compatible, is difficult to meet maintenance support demand; In domestic Auto-Test System, adopt in a large number in addition special design circuit to complete the test safeguard work of equipment, these testing tools are just out-of-date technically very soon, because cannot obtain spare part, safeguard work is more and more difficult, and maintenance cost is also more and more higher.
For the problems referred to above, synthetic instrument is a kind of good technology solution route, the development of synthetic instrument is to the supplementing of traditional single instrument, and can select different synthetic instrument parts to meet the requirement of required instrument performance aspect, to avoid the out-of-date problem of equipment and technology.Because the signal of synthetic instrument occurs and the link such as signal processing is by completing with the irrelevant software program of hardware platform, thus can by download new procedures or more newer driver just can change or expand the performance of instrument.When there is the out-of-date problem of technology, adopt general programming standard can be transitioned at an easy rate on new hardware and software as IVI (interchangeable virtual instruments, the interchangeable virtual instruments).Along with the fast development of personal computer, data-handling capacity has been strengthened, and expense has reduced.A/D (analog to digital conversion) and the also commercialization of D/A (digital-to-analog conversion) converter, and slewing rate and resolution improve year by year.These are all for the development of synthetic instrument provides strong technical support.
Summary of the invention
The invention provides a kind of signal analysis device and collocation method thereof, can be with compatible problem to solve the instrument between signal analysis instrument function singleness, different manufacturers in prior art.
The invention provides a kind of signal analysis device, comprising:
Down conversion module, local oscillator module and data acquisition and processing module;
Wherein, described down conversion module is used for signal to carry out frequency conversion, and the signal after frequency conversion is outputed to described data acquisition and processing module;
Described local oscillator module is used to described down conversion module that local oscillation signal is provided;
Described data acquisition and processing module are for carrying out data acquisition and processing operation to the signal of receiving.
Further, described down conversion module comprises preselector module, fundamental wave mixing module and harmonic mixing module; Wherein, described preselector module, for to the signal on predeterminated frequency thresholding A by frequency along separate routes, is sent into respectively described fundamental wave mixing module and described harmonic mixing resume module; Described fundamental wave mixing module and harmonic mixing module are all for arriving required frequency by signal frequency conversion.
Further, describedly send into respectively described fundamental wave mixing module and described harmonic mixing resume module to the signal on predeterminated frequency thresholding A by frequency along separate routes, comprising:
By the signal on predeterminated frequency thresholding A by frequency size along separate routes, the signal on default frequency threshold B is sent into described harmonic mixing resume module, and the signal under default frequency threshold B is sent into described fundamental wave mixing resume module.
Again further, described predeterminated frequency thresholding A is more than or equal to 0, is less than described predeterminated frequency thresholding B.
Again further, described preselector module is also processed for the signal under described predeterminated frequency thresholding A directly being delivered to described data acquisition and processing module.
Further, the frequency of the signal after described frequency conversion is 200 to 400MHz.
Further, described data acquisition and processing module comprise oscillograph, VSA and spectrum analyzer; Wherein, described oscillograph is for carrying out time domain measurement to waveform; Described VSA is for analyzing vector signal; Described spectrum analyzer is for spectrum analysis.
Further, signal analysis device of the present invention also comprises PC, this PC is for controlling described down conversion module, local oscillator module and data acquisition and processing module by PXIe (PCIExpress extensions for instrument, the expansion of PCI Express in instrument field) bus.
Further, the driving interface of signal analysis device of the present invention adopts IVI standard implementation, comprises IVI-C and IVI-COM two class interfaces.
The present invention also provides a kind of method that described signal analysis device is configured, by one of following two kinds of modes or combine and be configured:
By PXIe bus, downloading in real time generic firmware program is configured;
The parameter of described data acquisition and processing module is carried out to self-defined configuration.
Beneficial effect of the present invention is as follows:
The present invention utilizes the feature of synthetic instrument, demand in conjunction with equipment Test system, utilize PXIe bus high-speed transfer advantage and synthetic instrument framework, a kind of PXIe bus signals analytical equipment based on synthetic instrument framework is proposed, this device analysis frequency can reach 20GHz, bandwidth can reach 50MHz, can solve more than 95% communication, navigation signal test and most of electronic countermeasure signal testing, for unitized, miniaturization, broadband, Quick Measurement, greater flexibility, the low-cost development direction in equipment Test system future are laid a good foundation.
Accompanying drawing explanation
Fig. 1 is the signal analysis device structural representation of the embodiment of the present invention;
Fig. 2 is the signal analysis principle schematic of the embodiment of the present invention;
Fig. 3 is the interface framework of the signal analysis device of the embodiment of the present invention;
Fig. 4 is the down coversion block diagram of the embodiment of the present invention;
Fig. 5 is the IVI-C class compatible proprietary driver interchangeability schematic diagram of the embodiment of the present invention;
Fig. 6 is the IVI-COM class compatible proprietary driver interchangeability schematic diagram of the embodiment of the present invention;
Fig. 7 is the Method And Principle schematic diagram that signal analysis device is configured of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, does not limit the present invention.
Device embodiment
According to embodiments of the invention, a kind of signal analysis device is provided, Fig. 1 is the signal analysis device structural representation of the embodiment of the present invention, Fig. 2 is the signal analysis principle schematic of the embodiment of the present invention, as depicted in figs. 1 and 2, the signal analysis device of the embodiment of the present invention comprises down conversion module, local oscillator module, data acquisition and processing module and PC.Below each module is elaborated.
Particularly, down conversion module is used for signal to carry out frequency conversion, and the signal after frequency conversion is outputed to data acquisition and processing module.In the embodiment of the present invention, the signal frequency after frequency conversion is 200 to 400MHz.
Down conversion module comprises preselector module, fundamental wave mixing module and harmonic mixing module.Wherein, preselector module, for to the signal on predeterminated frequency thresholding A by frequency along separate routes, is sent into respectively fundamental wave mixing module and harmonic mixing resume module, and the signal under predeterminated frequency thresholding A is directly delivered to data acquisition and processing module processing; Fundamental wave mixing module and harmonic mixing module are all for arriving required frequency by signal frequency conversion.
Particularly, preselector by the signal on predeterminated frequency thresholding A by frequency size along separate routes, send into respectively fundamental wave mixing module and harmonic mixing resume module, refer to the signal on default frequency threshold B is sent into harmonic mixing resume module, the signal under default frequency threshold B is sent into fundamental wave mixing resume module.
Above-mentioned predeterminated frequency thresholding A is more than or equal to 0, is less than predeterminated frequency thresholding B.In the embodiment of the present invention, predeterminated frequency thresholding A is set to 100MHz, and predeterminated frequency thresholding B is set to 4GHz.
Local oscillator module is used to down conversion module that local oscillation signal is provided.Particularly, local oscillator module provides two-way local oscillation signal, sends into respectively fundamental wave mixing module and harmonic mixing module for frequency conversion.
Data acquisition and processing module are for carrying out data acquisition and processing operation to the signal of receiving.In the embodiment of the present invention, data acquisition and processing module comprise oscillograph, VSA and spectrum analyzer; Wherein, oscillograph is for carrying out time domain measurement to waveform; VSA is for analyzing vector signal; Spectrum analyzer is for spectrum analysis.As shown in Figure 2, under the system architecture of signal analysis device of the present invention, coordinate corresponding software, can form above three quasi-instruments: (1) oscillograph, completes waveform time domain measurement and analysis.Signal enters low-converter, exports to data acquisition and processing module after becoming intermediate frequency 375MHz, and data acquisition and processing module are moved corresponding oscillograph program, complete waveform time domain measurement function.(2) VSA.Signal enters low-converter, exports to data acquisition and processing module after becoming intermediate frequency 375MHz, by its operation VSA program, obtains the analysis results such as EVM (error vector magnitude).(3) spectrum analyzer.Signal enters low-converter, exports to data acquisition and processing module after becoming intermediate frequency 375MHz, by its operation spectrum analyzer program, obtains the power spectrum of signal, reports host computer.Certainly, according to actual needs, those skilled in the art can also increase other functional modules for data acquisition and processing module, and are not limited to above three kinds of functional modules.
PC is the embedded computer in Fig. 1, for down conversion module, local oscillator module and data acquisition and processing module being controlled by PXIe bus.
The driving interface of signal analysis device of the present invention adopts IVI standard implementation, comprises IVI-C and IVI-COM two class interfaces.
Fig. 3 is the interface framework of the signal analysis device of the embodiment of the present invention, as shown in Figure 3, radiofrequency signal to be analyzed is entered by the RF IN mouth of preselector, preselector inside is divided into two sections by 4GHz and enters respectively fundamental wave mixing module and harmonic mixing module is carried out mixing from RF1, RF2 output, local oscillator module provides various local oscillation signals for two frequency mixing module, and the signal after mixing send data acquisition and processing module to do time domain, Vector Modulation territory, frequency domain etc. and further analyzes.In Fig. 3, LO represents local oscillation signal, and RF represents radiofrequency signal, and IF represents the intermediate-freuqncy signal obtaining after frequency conversion, and CLK represents reference clock signal, and trig is trigger pip, and IN represents input, and OUT represents output.
Intermediate-freuqncy signal after the present embodiment adopts 375MHz as down coversion, Fig. 4 is the down coversion block diagram of the embodiment of the present invention, as shown in Figure 4, down conversion module fades to intermediate frequency 375MHz output by the broadband signal unification of 100MHz to 20GHz, by data acquisition and processing module, this signal is gathered and analyzed again, obtain spectrum information and modulation intelligence.
Down conversion module comprises harmonic mixing and two passages of fundamental wave mixing.Harmonic mixing module is exported signal frequency conversion more than 4GHz to 375MHz.Fundamental wave mixing passage is exported 100MHz～4GHz signal frequency conversion to 375MHz.Signal below 100MHz, without frequency-conversion processing, directly outputs to data acquisition module and carries out AD collection and data signal analysis.
The software architecture that signal analysis device of the present invention adopts is divided into five layers from top to bottom: application layer, IVI driver layer, module bsp driver layer, operating system and bus interface driver.Application layer, by the calling of driver, by VISA storehouse (virtual instrument softwarearchitecture, virtual instrument software architecture function library) PXIe bus interface, is realized the configuration of apparatus of the present invention and control.
Application layer comprises synthetic instrument softpanel and synthetic instrument demo system program.Synthetic instrument softpanel provides human-computer interaction interface, provides instrument synthetic configuration management, and the operation interface of synthetic instrument.User, by operation synthetic instrument softpanel, becomes required instrument according to testing scheme flexible configuration.Synthetic instrument demo system is the synthetic instrument test procedure example for testing requirement.
IVI driver layer is write according to IVI standard, for the encapsulation to synthetic instrument system Plays module bsp driver.
Module bottom layer driving is the bottom hardware interface encapsulation of three kinds of modules of signal analysis device of the present invention.
IVI drives and adopts IVI standard is to realize the key of instrument exchange technology.Application program realizes Instrument Interchangeable by calling IVI class driver.Instrument softpanel drives Interface realization calling module by IVI-C or IVI-COM standard.User can be by increasing or revise the information of IVI repository and driver session configuration, as the instrument of logical name, logical name sensing and driver etc., realize the instrument of different vendor and introduce, and in the situation that not revising application program, realize instrument and exchange.
In IVI Driver Development process, the function realization in each interface function and attribute start with the prefix of the specific driver of unique identification IVI.Application program is directly called the specific driver of the IVI that contains these prefixes.
IVI-C and IVI-COM are the core interface of synthetic instrument (being signal analysis device of the present invention).Its implementation is as follows:
1, IVI-C class interchangeability driver
IVI-C offers user with DLL (Dynamic Link Library, dynamic link library) form, and conventional development environment comprises conventional VC++, LabView, and the instruments such as CVI, all support the DLL of C form to call.
During the initialization function of application call IVI class driver, should specify one with corresponding logical name in IVI repository.By the application program of IVI class driver, can call IVI-C class and meet specific driver to obtain specific driver session handle by calling Get SpecificDriver C Handle function equally.Fig. 5 is the IVI-C class compatible proprietary driver interchangeability schematic diagram of the embodiment of the present invention, has shown how user realizes interchangeability when using IVI-C class to meet specific driver.Gui presentation graphic user interface in Fig. 5 (Graphical user interface).
2, IVI-COM class interchangeability driver
IVI-COM driver offers user with the form of Win32-DLL.The application development environment such as Agilent VEE, LabView, LabWindows/CVI and Visual C++ all support to call com object.
For realizing interchangeability, application program must be called IVI-COM session factory, and clearly indicates the specific driver pointing in program.When application program is opened class that IVI-COM class meets specific driver and met API session, it,, by specifying Class ID or Prog ID to start object suitable in COM storehouse, realizes the specific driver of dynamic loading IVI.Fig. 6 is the IVI-COM class compatible proprietary driver interchangeability schematic diagram of the embodiment of the present invention, and Fig. 6 has shown how user obtains interchangeability when using IVI-COM class to meet specific driver.
Embodiment of the method
According to embodiments of the invention, a kind of method that signal analysis device is configured is provided, Fig. 7 is the principle schematic of the method that signal analysis device is configured of the embodiment of the present invention, in Fig. 7, I represents in-phase signal, and Q represents orthogonal signal, and M represents range signal, P represents phase signal, and F represents frequency signal.As shown in Figure 7, according to the method that signal analysis device is configured of the embodiment of the present invention, by one of following two kinds of modes or combine and be configured:
The first is to download in real time all kinds of generic firmware programs by PXIe bus, by this mode downloading, can allow signal analysis device of the present invention possess the ability of real-time update, expanded the test function of signal analysis device, except having the function of upgrading in time, be particularly suitable for the signal analysis device type that some have self-defined feature.The first configuration is the one-level configuration in Fig. 7.
The second is that the various IP of data acquisition and processing module and parameter are carried out to self-defined configuration.In the embodiment of the present invention, IP refers to FPGA program.By configuration different parameters, can complete conventional several large class Vector Signal Analysis.This kind of configuration mode has the ability to different IP combination.Typical IP divides as shown in Figure 7, and IP1 is quadrature frequency conversion IP, and IP1+IP3 can realize general Vector Signal Analysis function; IP1+IP4 can realize spectrum analysis function, and IP1+IP2+IP5 can realize analog demodulator function.According to this kind of configuration mode, user can design self-defining signal analysis function more neatly.The second configuration is the secondary configuration in Fig. 7.
Although be example object, the preferred embodiments of the present invention are disclosed, it is also possible those skilled in the art will recognize various improvement, increase and replacement, therefore, scope of the present invention should be not limited to above-described embodiment.
Claims (8)
1. a signal analysis device, is characterized in that, comprises down conversion module, local oscillator module and data acquisition and processing module;
Wherein, described down conversion module is used for signal to carry out frequency conversion, and the signal after frequency conversion is outputed to described data acquisition and processing module;
Described local oscillator module is used to described down conversion module that local oscillation signal is provided;
Described data acquisition and processing module are for carrying out data acquisition and processing operation to the signal of receiving;
Described down conversion module comprises preselector module, fundamental wave mixing module and harmonic mixing module, and described preselector module comprises attenuator, switch and tuned filter;
Wherein, described preselector module, for to the signal on predeterminated frequency thresholding A by frequency along separate routes, is sent into respectively described fundamental wave mixing module and described harmonic mixing resume module;
Described fundamental wave mixing module and harmonic mixing module are all for arriving required frequency by signal frequency conversion;
Wherein, describedly send into respectively described fundamental wave mixing module and described harmonic mixing resume module to the signal on predeterminated frequency thresholding A by frequency along separate routes, comprising:
By the signal on predeterminated frequency thresholding A by frequency size along separate routes, the signal on default frequency threshold B is sent into described harmonic mixing resume module, and the signal under default frequency threshold B is sent into described fundamental wave mixing resume module.
2. signal analysis device as claimed in claim 1, is characterized in that, described predeterminated frequency thresholding A is more than or equal to 0, is less than described predeterminated frequency thresholding B.
3. signal analysis device as claimed in claim 2, is characterized in that, described preselector module is also processed for the signal under described predeterminated frequency thresholding A directly being delivered to described data acquisition and processing module.
4. signal analysis device as claimed in claim 1, is characterized in that, the frequency of the signal after described frequency conversion is 200 to 400MHz.
5. signal analysis device as claimed in claim 1, is characterized in that, described data acquisition and processing module comprise oscillograph, VSA and spectrum analyzer;
Wherein, described oscillograph is for carrying out time domain measurement to waveform;
Described VSA is for analyzing vector signal; Described spectrum analyzer is for spectrum analysis.
6. the signal analysis device as described in any one in claim 1 to 5, is characterized in that, also comprises PC, and this PC is for controlling described down conversion module, local oscillator module and data acquisition and processing module by PXIe bus.
7. the signal analysis device as described in any one in claim 1 to 5, is characterized in that, the driving interface of described signal analysis device adopts IVI standard implementation, comprises IVI-C and IVI-COM two class interfaces.
8. method signal analysis device described in claim 1 being configured, is characterized in that, by one of following two kinds of modes or two kinds of modes, combines and is configured:
By PXIe bus, downloading in real time generic firmware program is configured;
The parameter of described data acquisition and processing module is carried out to self-defined configuration.
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| CN103248444B (en) * | 2013-05-16 | 2015-06-17 | 中国电子科技集团公司第四十一研究所 | System integration method for test parameters based on unit combination |
| CN104516279B (en) * | 2013-09-30 | 2017-06-09 | 瑞昱半导体股份有限公司 | The control circuit and control method of quick peripheral assembly interconnecting device |
| CN103677833B (en) * | 2013-12-16 | 2017-02-01 | 中国电子科技集团公司第四十一研究所 | Implementation method for open type software platform of microwave measurement instrument |
| CN106649113A (en) * | 2016-12-21 | 2017-05-10 | 北京航天测控技术有限公司 | Testing equipment control system and realization method |
| CN106680626A (en) * | 2016-12-21 | 2017-05-17 | 北京航天测控技术有限公司 | Data transmission simulator of gondola |
| CN106646315B (en) * | 2016-12-30 | 2019-09-27 | 福建利利普光电科技有限公司 | A kind of Auto-Test System and its test method of digital measuring instruments |
| CN107239277B (en) * | 2017-05-23 | 2020-12-01 | 中国电子科技集团公司第四十一研究所 | Microwave frequency converter series embedded firmware design method |
| CN107239611B (en) * | 2017-06-05 | 2020-06-16 | 中国电子科技集团公司第四十一研究所 | Vector signal analysis device and method |
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