CN100356179C - Signal generation apparatus and method - Google Patents
Signal generation apparatus and method Download PDFInfo
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- CN100356179C CN100356179C CNB2004100802723A CN200410080272A CN100356179C CN 100356179 C CN100356179 C CN 100356179C CN B2004100802723 A CNB2004100802723 A CN B2004100802723A CN 200410080272 A CN200410080272 A CN 200410080272A CN 100356179 C CN100356179 C CN 100356179C
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Abstract
The present invention provides a signal generation device and a method. The present invention has the core that corresponding element signals are generated through schematic diagrams which include device models and are respectively corresponding to elements; the present invention calls the stored device model including schematic diagrams to avoid the design of a circuit board and the complex setting process of signal parameters; consequently, manpower, material resources and time are greatly saved; the definition of signal parameters is carried out on general output signals and self-defining signals in advance, and thereby, various requirements for the output signals in practical application are satisfied; the present invention can generate corresponding output signals according to waveform data files obtained by simulation software or oscilloscopes, etc. so that the setting process of signal parameters is further avoided, and the method of the present invention can be realized simply. Consequently, through the technical scheme provided by the present invention, the purposes of the simplification of a signal generation process, the reduction of the cost of signal generation, and the enlargement of the range of application of a signal generator are realized.
Description
Technical field
The present invention relates to the electronic equipment technical field of measurement and test, be specifically related to a kind of signal generation apparatus and method.
Background technology
To tested testing equipment the time, the output signal that often needs to be scheduled to device inputs in the tested equipment.
The production method of the output signal of at present predetermined device mainly contains two kinds:
Method one: simulate the output signal that produces device by special signal generator.Special signal generator mainly comprises two kinds: a kind of is versatile signal generator, and another kind is the special signal generator.
Versatile signal generator needs operating personnel that each signal parameter of output signal is set, as the type that output signal is set is square wave, sine wave, bit stream etc., each parameters such as voltage amplitude of output signal are set simultaneously as required, after setting was finished, the signal output module in the versatile signal generator was according to the output signal of each parameter generating corresponding devices that is provided with.
Therefore, when using versatile signal generator, each signal parameter that needs operating personnel fully to understand the output signal of the device that simulated can carry out signal parameter to be set, and operates very loaded down with trivial details.
Each signal parameter of the signal of special signal generator output is all fixed, and whether output signal is just passable as long as control.Present all built-in this special signal generator in some comprehensive testers.The output signal that the special signal generator can be simulated is more single, usually all be merely able to simulate the output signal of part kind interface, as the special signal generator of the output signal of the 100Base-T interface that can simulate Ethernet, can not simulate the output signal of other various criterion interfaces such as SDH (Synchronous Digital Hierarchy) interface.
Though the different components of same type is all observed same output standard, but there is difference in the output signal of in fact different devices output, and no matter be general generator output signal or special signal generator, all be difficult to this difference of simulation, therefore, there are difference in the output signal of special signal generator simulation generation and the output signal of practical devices.
Method two: comprise the circuit board of this device by use, and allow this device operate as normal produce output signal.For the output signal that the user need obtain, need supplier or user of service design circuit plate voluntarily.Like this, the design effort meeting of circuit board is along with the user increases at any time to the needs of different output signals, very labor intensive, time and material resources.
Summary of the invention
The object of the present invention is to provide a kind of signal generation apparatus and method, signal output module produces the output signal of needs by the schematic diagram that comprises device model, makes the output signal true reappearance of device generation, and implementation procedure of the present invention is simple, the realization cost is low, has wide range of applications.
For achieving the above object, a kind of signal generation apparatus provided by the invention comprises:
Schematic diagram administration module: be provided with and store the schematic diagram that comprises device model of each device correspondence, when needs are scheduled to the output signal of device, the schematic diagram that comprises device model is accordingly transferred to signal output module;
Signal output module: the output signal that produces and export respective devices according to the next schematic diagram that comprises device model of described schematic diagram administration module transmission.
Described device also comprises: sign indicating number type definition module: the signal parameter that defines and store each signal, corresponding signal parameter with its storage transfers to described signal output module as required, or, the corresponding signal parameter of its storage is transferred to described schematic diagram administration module according to the required input signal of device symbol of device model in the described schematic diagram administration module.
Described device also comprises: the Wave data administration module: store the Wave data file of the output signal of each device, and as required with corresponding Wave data file transfer to described signal output module.
The present invention also provides a kind of signal generating method, comprising:
A, the schematic diagram that comprises device model of each device correspondence is set, and is stored to the schematic diagram administration module;
B, when the output signal of the predetermined device of needs, signal output module produces corresponding output signal according to the schematic diagram that comprises device model accordingly of described schematic diagram administration module storage.
Device model among the described step a comprises: the modeling language Verilog-AMS device model of the simulated program SPICE device model of lsi core, input and output buffer information specification IBIS device model, the modeling language VHDL-AMS device model of describing mixed signal, description mixed signal.
Described step b comprises:
When needs were scheduled to the output signal of device, the schematic diagram administration module was according to corresponding devices modular concept figure display device symbol;
On each lead-in wire of described device symbol, add as required, connect other devices, the duty of described device model is set;
Signal output module produces corresponding output signal according to described device model schematic diagram.
Also comprise before the described step b:
Determine each input signal that device model needs, and the signal parameter of described each input signal is stored to a yard type definition module;
And described step b also comprises:
When device model needed input signal, sign indicating number type definition module transferred to described schematic diagram administration module with each parameter of respective input signals.
Described method also comprises:
Definite parameter that needs each general output signal of output, and be stored to a yard type definition module;
When the predetermined general output signal of needs, signal output module is according to the corresponding general output signal of parameter generating of the corresponding general output signal of storing in the described sign indicating number type definition module.
Described method also comprises:
Determine the Wave data file of the output signal of each device, and be stored to the Wave data administration module;
When needs were scheduled to the output signal of device, signal output module produced the output signal of respective devices according to the corresponding Wave data file of storing in the Wave data administration module.
Described signal output module comprises according to the output signal that the corresponding Wave data file of storing in the Wave data administration module produces respective devices:
The respective waveforms data file of storing in the described Wave data administration module is carried out the cycle registration process;
The Wave data file of described signal output module after according to described cycle registration process produces the output signal of respective devices.
Description by technique scheme can obviously be learnt, the present invention comprises the schematic diagram of device model by storage in the schematic diagram administration module, the output signal of the different components that obtains for needs, only need call in the corresponding schematic diagram that comprises device model, signal output module just can produce corresponding output signal, avoid board design and complicated signal parameter assignment procedure, greatly saved human and material resources and time; The present invention can make things convenient for interpolation, connect necessary auxiliary element according to the schematic diagram display device symbol that comprises device model, has made things convenient for the duty that each pin of device model is set; The present invention is by the signal parameter definition of each general output signal of storage in sign indicating number type definition module in advance, make signal output module can produce the output signal of numerous standard interfaces, satisfied in the practical application the various demands to output signal; The Wave data file of the output signal of the device that signal output module of the present invention can obtain according to simulation software or oscillograph etc. produces the output signal of respective devices, further avoided the signal parameter setting up procedure, made implementation method of the present invention simpler; Thereby realized simplification signal generating process by technical scheme provided by the invention, reduced the signal cost incurred, improved the purpose of signal generation apparatus range of application.
Description of drawings
Fig. 1 is a signal generation apparatus synoptic diagram of the present invention.
Embodiment
Core of the present invention is: the schematic diagram that comprises device model of storing each device correspondence, when needs were scheduled to the output signal of device, signal output module produced the output signal of respective devices according to the schematic diagram of storing in the schematic diagram administration module that comprises device model accordingly.
Below based on core concept of the present invention, the 1 pair of signal generation apparatus provided by the invention and method are elaborated in conjunction with the accompanying drawings.
In Fig. 1, signal generation apparatus provided by the invention comprises: schematic diagram administration module, sign indicating number type definition module, Wave data administration module and signal output module.
The major function of schematic diagram administration module is: store the schematic diagram that comprise device model of each device when circuit simulation, and the schematic diagram that comprises device model of its storage is managed.
The device of indication of the present invention is the device that possesses the output signal function.
The device model of indication of the present invention is based on the device model of various types of language descriptions.
Because present circuit simulation is mainly by SPICE (simulated program of Simulation Program with IntegratedCircuit Emphasis lsi core), IBIS (I/O Buffer InformationSpecification input and output buffer information specification), VHDL-AMS (describing the modeling language of mixed signal) or Verilog-AMS (describing the modeling language of mixed signal) wait and realize, so the device model of indication of the present invention mainly comprises: the SPICE device model, the IBIS device model, VHDL-AMS device model and Verilog-AMS device model etc.Certainly, the device model based on other language descriptions also is suitable for technical scheme provided by the invention.
When needs were scheduled to the output signal of device, the schematic diagram that comprises device model that the schematic diagram administration module will be scheduled to the device correspondence carried out visualization processing, shows the symbol of this device, with respectively going between clear representing of this device.
Then, the schematic diagram that the schematic diagram administration module will comprise device model transfers to signal output module, produces the corresponding devices output signal by signal output module according to the schematic diagram that comprises device model.
The schematic diagram administration module can be edited the schematic diagram that comprises device model of its storage, as adding on device model and being connected auxiliary element, the device model duty is set, input signal etc. is set.
The schematic diagram administration module can be directly adds on each lead-in wire of the device symbol of visualization processing and is connected auxiliary element, such as the interpolation build-out resistor etc.The present invention can also be directly be provided with the duty of device model on each lead-in wire of the device symbol of visualization processing, as being biased voltage-3.3V etc. at certain lead-in wire.Because a lot of device models also need input signal, the schematic diagram administration module can also call each signal parameter of corresponding signal from sign indicating number type definition module, realize being provided with the input signal of device.
The schematic diagram that comprises device model after the schematic diagram administration module will be edited transfers to signal output module, produces corresponding output signal by signal output module according to the schematic diagram that comprises device model after editing.
The major function of sign indicating number type definition module is: be provided with and store the signal parameters such as sign indicating number type, frequency, signal voltage of various signals, and as required the signal parameter of its storage is transferred to the schematic diagram administration module or directly exports signal output module to.
Can store the general output signal of some standards in the sign indicating number type definition module, as the output signal of E1/T1 (two kinds of digital relay interfaces), 10/100BASE-T (two kinds of Ethernet electrical interfaces) interface etc.Sign indicating number type definition module is stored the detailed setting of the general output signal of these standards, such as the settings such as voltage parameter, current parameters and edge time parameter of the general output signal of storage; Also can store the detailed setting of some off-gauge self-defined output signals in the sign indicating number type definition module according to actual needs, as the sign indicating number type of storing self-defined output signal is sinusoidal wave setting, or stores the setting of the PRBS etc. of the PRBS that self-defined output signal is different length such as 2^7-1 (PseudoRandom Bit Sequences PRBS pseudo-random bit sequence), 2^9-1.
Because a lot of devices also need input signal in producing the output signal process, the input signal that needs as device is the PRBS of sine wave or different length etc.When device needed input signal, its corresponding device model need provide respective input signals equally.
When device model needs input signal, select the signal parameter of its signal that needs in the signal parameter of each signal that the schematic diagram administration module can be stored from sign indicating number type definition module, sign indicating number type definition module is according to the selection of schematic diagram administration module, the signal parameter of corresponding signal is transferred to the schematic diagram administration module, as the input signal of corresponding devices model.
In actual applications, not only need to use the output signal of the device of appointment, need some self-defined signals or general output signal toward the contact meeting, as E1/T1 Interface, the output signal of 10/100BASE-T interface, perhaps high level is 1V, low level is 0V, rising edge is 1ns, frequency is square wave of 100MHz or the like, for the range of application that makes signal generation apparatus of the present invention more extensive, the signal parameter of the above-mentioned signal that sets in advance and store in sign indicating number type definition module removes and is applied in the output signal that produces device, can also be applied in the process that produces general output signal or self-defined signal.When predetermined general output signal of needs or self-defined signal, can be with the signal parameter of the corresponding signal stored in the sign indicating number type definition module, directly transfer to signal output module, the signal output module signal parameter that transmission comes according to sign indicating number type definition module directly produces and exports corresponding general output signal or self-defined signal.
The major function of Wave data administration module is: store the Wave data file of each device output, and each Wave data file is managed.When needs were scheduled to the output signal of device, the Wave data administration module transferred to signal output module with corresponding Wave data literary composition, was directly produced the output signal of corresponding device according to the Wave data file by signal output module.
The content of the Wave data file of storing in the Wave data administration module generally includes: waveform temporal information, voltage amplitude and wave-shape amplitude information etc., as when the moment 0.0015us, the wave-shape amplitude of signal is 0.9V etc.Signal output module of the present invention can be according to information such as the time in the Wave data file, voltage, wave-shape amplitude, voltage, waveform in the output appointment of the moment of appointment, thereby obtain the output signal of corresponding device, as when the moment 0.0015us, the wave-shape amplitude of output signal is 0.9V.
The file type of the Wave data file of storing in the Wave data administration module can be diversified, as CSV (Comma Separated Variable comma separates variable) file, text etc.
The preparation method of the Wave data file of storing in the Wave data administration module has two kinds, method one: when using oscillograph that the output waveform of predetermined device is tested, the output waveform of being scheduled to device is saved in the corresponding Wave data file.Method two: when using signal simulation software, by the Wave data file of signal simulation software output acquisition.Signal simulation software comprises ADS (Advanced Design System, the advanced design system), HSPICE (High Speed Simulation Program with Integrated CircuitEmphasis, the simulated program of high speed integrated circuit core), MATLAB (Matrix Laboratory, matrix experiment chamber) etc.ADS is a simulation software of Agilent company, and HSPICE is a simulation software of Synopsys company, and MATLAB is a simulation software of MathWorks company.
Because the Wave data file in most of the cases needs the output that circulates, if with directly the circulate output then waveform may occur beginning and finish the situation that waveform does not connect of Wave data file, so Wave data administration module of the present invention can also carry out the cycle registration process with the Wave data file, avoid the Wave data file waveform may occur beginning and finish the situation that waveform does not connect, make the waveform of the device output signal that signal output module produces according to the Wave data file can be continuous in when output circulation.
The major function of signal output module is: the schematic diagram that comprises device model that transmission comes according to the schematic diagram administration module produces the output signal of corresponding predetermined device.Be signal output module according to the schematic diagram administration module to the device duty be provided with, sign indicating number type situation, the voltage and current size of export structure is set, and parameter such as edges of signals time, simulate the output signal that produces predetermined device.
Signal output module can directly produce the self-defining output signal of general output signal or operating personnel according to the signal parameter that the transmission of sign indicating number type definition module comes, the signal parameter output high level that comes as the transmission according to sign indicating number type definition module is 1V, low level is 0V, rising edge is 1ns, and frequency is the square wave of 100MHz.
Signal output module can produce the output signal of corresponding device equally according to the Wave data file that Wave data administration module transmission comes, and as voltage, the waveform in the output appointment of the moment of appointment, thereby obtains the output signal of corresponding device.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wishes that appended claim comprises these distortion and variation.
Claims (10)
1, a kind of signal generation apparatus is characterized in that comprising:
Schematic diagram administration module: be provided with and store the schematic diagram that comprises device model of each device correspondence, when needs are scheduled to the output signal of device, the schematic diagram that comprises device model is accordingly transferred to signal output module;
Signal output module: the output signal that produces and export respective devices according to the next schematic diagram that comprises device model of described schematic diagram administration module transmission.
2, a kind of signal generation apparatus as claimed in claim 1 is characterized in that described device also comprises:
Sign indicating number type definition module: the signal parameter that defines and store each signal, corresponding signal parameter with its storage transfers to described signal output module as required, or, the corresponding signal parameter of its storage is transferred to described schematic diagram administration module according to the required input signal of device symbol of device model in the described schematic diagram administration module.
3, a kind of signal generation apparatus as claimed in claim 1 is characterized in that described device also comprises:
The Wave data administration module: store the Wave data file of the output signal of each device, and as required with corresponding Wave data file transfer to described signal output module.
4, a kind of signal generating method is characterized in that comprising:
A, the schematic diagram that comprises device model of each device correspondence is set, and is stored to the schematic diagram administration module;
B, when the output signal of the predetermined device of needs, signal output module produces corresponding output signal according to the schematic diagram that comprises device model accordingly of described schematic diagram administration module storage.
5, a kind of signal generating method as claimed in claim 4 is characterized in that the device model among the described step a comprises: the modeling language Verilog-AMS device model of the simulated program SPICE device model of lsi core, input and output buffer information specification IBIS device model, the modeling language VHDL-AMS device model of describing mixed signal, description mixed signal.
6, a kind of signal generating method as claimed in claim 4 is characterized in that described step b comprises:
When needs were scheduled to the output signal of device, the schematic diagram administration module was according to corresponding devices modular concept figure display device symbol;
On each lead-in wire of described device symbol, add as required, connect other devices, the duty of described device model is set;
Signal output module produces corresponding output signal according to described device model schematic diagram.
7,, it is characterized in that also comprising before the described step b as claim 4 or 5 or 6 described a kind of signal generating methods:
Determine each input signal that device model needs, and the signal parameter of described each input signal is stored to a yard type definition module;
And described step b also comprises:
When device model needed input signal, sign indicating number type definition module transferred to described schematic diagram administration module with each parameter of respective input signals.
8, as claim 4 or 5 or 6 described a kind of signal generating methods, it is characterized in that described method also comprises:
Definite parameter that needs each general output signal of output, and be stored to a yard type definition module;
When the predetermined general output signal of needs, signal output module is according to the corresponding general output signal of parameter generating of the corresponding general output signal of storing in the described sign indicating number type definition module.
9, as claim 4 or 5 or 6 described a kind of signal generating methods, it is characterized in that described method also comprises:
Determine the Wave data file of the output signal of each device, and be stored to the Wave data administration module;
When needs were scheduled to the output signal of device, signal output module produced the output signal of respective devices according to the corresponding Wave data file of storing in the Wave data administration module.
10, a kind of signal generating method as claimed in claim 9 is characterized in that described signal output module comprises according to the output signal that the corresponding Wave data file of storing in the Wave data administration module produces respective devices:
The respective waveforms data file of storing in the described Wave data administration module is carried out the cycle registration process;
The Wave data file of described signal output module after according to described cycle registration process produces the output signal of respective devices.
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| CNB2004100802723A CN100356179C (en) | 2004-09-29 | 2004-09-29 | Signal generation apparatus and method |
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| CNB2004100802723A CN100356179C (en) | 2004-09-29 | 2004-09-29 | Signal generation apparatus and method |
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| CN100356179C true CN100356179C (en) | 2007-12-19 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101087148B (en) * | 2006-06-07 | 2011-01-05 | 鸿富锦精密工业（深圳）有限公司 | Simulation and analysis system and method of high-speed differential signal |
| CN102236049A (en) * | 2010-04-22 | 2011-11-09 | 鸿富锦精密工业（深圳）有限公司 | Signal detection system and method |
| CN103744472A (en) * | 2013-12-17 | 2014-04-23 | 中国船舶工业集团公司第七〇八研究所 | General digital signal generating system |
| CN107453828B (en) * | 2016-06-01 | 2020-11-13 | 大唐移动通信设备有限公司 | Method and device for generating digital intermediate frequency model |
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| CN2190302Y (en) * | 1993-10-26 | 1995-02-22 | 刘运中 | Reference signal generator |
| JPH08222954A (en) * | 1995-02-15 | 1996-08-30 | Yokogawa Electric Corp | Signal generator |
| US5786716A (en) * | 1996-01-30 | 1998-07-28 | Oki Electric Industry Co., Ltd. | Signal generator for generating test mode signals |
| CN1420632A (en) * | 2002-04-17 | 2003-05-28 | 湘潭师范学院 | Virtual signal generator for generating square wave by remainder interpolation comparision |
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