CN112929101B - Automatic test system and method applied to transmitter - Google Patents
Automatic test system and method applied to transmitter Download PDFInfo
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- CN112929101B CN112929101B CN202110103326.7A CN202110103326A CN112929101B CN 112929101 B CN112929101 B CN 112929101B CN 202110103326 A CN202110103326 A CN 202110103326A CN 112929101 B CN112929101 B CN 112929101B
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Abstract
The invention discloses an automatic test system and a method applied to a transmitter, belonging to the technical field of test, wherein the automatic test system comprises: the device comprises a signal end to be tested, a control end and an instrument end. The automatic test method comprises the following steps: s1, importing external database configuration parameters; s2, modifying a database and identifying a measurement mode; s3, judging according to the measuring mode; s4, screening data related to the mode N; s5, executing a communication connection establishing module; s6, script control of hard software; s7, executing the corresponding function module; and S8, executing a report generation module. The invention establishes parameter configuration templates aiming at different test scenes, and respectively leads the parameter configuration templates into the upper computer of the signal end to be tested and the main control upper computer, so that the parameter sources of the signal parameter of the signal source to be tested and the configuration measurement parameter of the instrument end are unique, various scenes of automatic matching test are realized, and the automatic test of hundreds of paths of signals on the output frequency band of a transmitter can be met.
Description
Technical Field
The invention relates to the technical field of testing, in particular to an automatic testing system and method applied to a transmitter.
Background
In recent years, the industry of test instruments is rapidly developed, the test technology is changed day by day, the structure of the test instrument is increasingly complex, and the function of the test instrument is also increasingly powerful. The common testing mode is manual testing by manually operating an instrument, the operation process is complicated, improper operation sometimes occurs, and the instrument is damaged. When testing signals generated at a signal end to be tested, because signal parameters of different modulation modes are different, measurement configurations of a testing instrument are different, particularly hundreds of signals on a testing frequency band, new configurations of a large number of measurement parameters in the instrument are repeated when each path of signal is tested, and therefore efficiency is extremely low. In addition, the test results are recorded on a paper report or manually input into an electronic form, and recording errors inevitably occur.
At present, automatic test program control software is also available in the market to assist automatic testing, but the test and specific instruments aiming at single function cannot meet the test requirements of hundreds of signals on frequency bands and multiple signal types and modulation modes. In addition, the human-computer interaction interface displays few configurable parameters, and for different parameters of the same modulation mode signal, the test conditions needing the configuration of the instrument are difficult to control, so that the test conditions cannot be automatically matched with various scenes to be tested, therefore, the test flow needs to be recompiled in different scenes, the program control flow needs special personnel for design and development, and the flexibility is low and the expandability is poor.
For the existing manual test and automatic test, an upper computer of a signal end to be tested needs to be manually operated, the signal end to be tested is configured to generate signals to be tested under different scenes, and then an instrument is operated through manual or program control software to configure measurement parameters. In order to test output signals of different output ports of a signal source to be tested, ports of a signal end to be tested and an instrument end need to be manually switched, so that physical abrasion is easily caused, and equipment damage caused by human body static electricity is easily caused. When a certain path of tested signal is not generated or unqualified, the reason is difficult to quickly position due to different configuration source parameters of the upper computer of the signal end to be tested and manual configuration or program control software, so that an automatic test system with the mutual association and close combination of the signal end to be tested, the control end and the instrument end cannot be formed.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides an automatic test system and method applied to a transmitter.
The technical scheme of the invention is as follows: an automatic test method applied to a transmitter comprises the following steps:
s1, importing external database configuration parameters, and importing parameter configuration templates into a signal end upper computer to be tested and a master control upper computer respectively;
s2, modifying the database and identifying the measuring mode, modifying or filling special measuring parameter values in the database according to the signal modulation mode, and automatically identifying or manually adjusting the measuring mode;
s3, judging according to the measuring mode, selecting the corresponding function module, and directly jumping to the step S8 if no corresponding measuring mode exists;
s4, screening data related to the mode N (N is 1,2,3, …), and screening signal parameters conforming to the current measurement mode N;
s5, executing a communication connection establishment module, establishing communication connection between the master control upper computer and an instrument with a corresponding measurement mode, judging whether the communication connection is established, and if not, checking whether the hardware connection, the instrument and the IP setting of a control end are in the same network segment to troubleshoot the problem until the communication connection is established;
s6, script control of hard software, namely, script configuration and execution of an upper computer at a signal end to be detected and script control of switching of a radio frequency vector network switch;
s7, executing a corresponding function module, synthesizing the screened signal parameters and the SCPI instruction of the matched measuring instrument, sending the synthesized signal parameters and the SCPI instruction to the instrument end, receiving the test data fed back by the instrument, judging whether all mode data processing is finished after the current measuring mode is executed, returning to the step S4 if the processing is not finished, and executing the step S8 if all the processing is finished;
and S8, executing a report generation module, analyzing and processing the acquired data and generating report files with various specific requirements.
Preferably, the report file is in a Word, Excel or PDF format.
Preferably, the measurement mode includes selection of functional function modules integrated by different SCPI instructions, the function module comprises a signal spectrum acquisition module (module 1: PS), an accurate frequency point measurement module (module 2: SA), a signal bandwidth measurement module (module 3: OBW), a signal power measurement module (module 4: CHP), a phase noise measurement module (module 5: PN), a harmonic clutter measurement module (module 6: HC), a demodulation performance measurement module (module 7: VSA), a time domain waveform measurement module (module 8: OSC) and the like, the parenthesis content is the corresponding measurement mode identification name of each function module, if the content of the parameter field in the imported parameter configuration template under the corresponding module is null or has no field, the default is to use the internal default value, and the module and the measurement mode can be added according to the test requirement and the function of the instrument.
Preferably, the parameter configuration template has one or more modulation modes according to various types of signals, parameter fields can be added or deleted, and the file format is txt, csv, xml or xls.
An automatic test system of a transmitter comprises a signal end to be tested, a control end and an instrument end;
the signal end to be detected is a transmitter which generates signals under the control of an upper computer of the signal end to be detected, the generated signals comprise communication signals, radar signals, interference signals, navigation signals and other types and any combination of multiple modulation modes, and signals up to hundreds of paths can exist in a certain frequency band instantly;
the control end runs on the PC and comprises a master control upper computer and a signal end upper computer to be detected;
the instrument end is used for receiving the control instruction sent by the control end, configuring the measurement function, measuring the signal to be measured generated by the signal end to be measured, receiving the query instruction sent by the control end and feeding back the measurement data.
Preferably, the master control upper computer establishes a connection with the upper computer of the signal end to be detected through a script and simulates the operation of manually clicking interface keys to control the generation of relevant signals; the master control upper computer switches the ports of the signal end to be tested and the instrument end under the control of a radio frequency switching network hardware switch; and importing a parameter configuration template into the master control upper computer to form a database, modifying parameters and measurement modes in the database, screening out data related to the modes after judging the measurement modes, establishing communication connection with instruments of the corresponding measurement modes, executing corresponding function modules, and automatically generating a test report.
Preferably, the upper computer of the signal end to be detected imports the parameter configuration template through manual operation or automatic operation, and can modify the loaded database, update the configuration of the signal end to be detected and generate the signal to be detected.
Preferably, the number of the instruments at the instrument end is more than or equal to 1, and the instruments at any instrument end have the SCPI program control function.
Compared with the prior art, the invention has the following beneficial effects:
the invention overcomes the defects of complicated operation, easy error and the like of the traditional manual test, breaks through the limitations of the traditional automatic test in the aspects of limited configuration quantity, incomplete configuration and the like, establishes parameter configuration templates aiming at different test scenes, and respectively leads the parameter configuration templates into the upper computer of the signal end to be tested and the main control upper computer, so that the parameter sources of the signal parameter of the signal source to be tested and the configuration measurement parameter of the instrument end are unique, various scenes of the automatic matching test are realized, the test flow does not need to be recompiled, the interference factors can be effectively reduced, the test problem can be conveniently and rapidly positioned, and the test complexity is simplified.
(1) The method has the following advantages: according to the invention, the mode measurement is judged, the corresponding function module is selected to be executed, and the subsequent function modules can be sequentially executed in a circulating manner after the execution is finished, so that the response time of the instrument configuration is saved, and the testing efficiency is improved.
(2) The advantages are as follows: the measurement mode is divided according to the functional function module, can be deleted and added at will, can establish communication connection with the instrument, and has strong expandability.
(3) The advantages are three: the master control upper computer establishes a connection with the signal end upper computer to be tested through the script, and the simulation person clicks the signal end upper computer interface to be tested, so that the labor cost is saved, and the version iteration of software in the project is accelerated.
Drawings
FIG. 1 is a schematic diagram of an automatic test system of the present invention;
FIG. 2 is a flow chart of the automatic test system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "upper", "lower", and the like refer to orientations and positional relationships based on the orientations and positional relationships shown in the drawings, which are only used for convenience of description and simplification of the present invention, and do not indicate or imply that the designated devices or elements must have specific orientations, be constructed and operated in specific orientations, and therefore, should not be construed as limitations of the present invention.
As shown in fig. 1, an automatic test system applied to a transmitter includes:
an automatic test system applied to a transmitter comprises a signal terminal 101 to be tested, a control terminal 102 and an instrument terminal 103:
the signal end to be detected 101 is a transmitter which generates signals under the control of the signal end to be detected upper computer 112, the signals cover the types of communication signals, radar signals, interference signals, navigation signals and the like and any combination of various modulation modes, and signals up to hundreds of paths can exist in a certain frequency band instantly;
the control end 102 runs on a PC and is mainly divided into a master control upper computer 111 and a signal end upper computer 112 to be detected;
the instrument terminal 103 mainly receives the control instruction sent by the control terminal 102, configures the measurement function, measures the signal to be measured generated by the signal terminal 101 to be measured, receives the query instruction sent by the control terminal 102, and feeds back the measurement data.
One embodiment of the invention is that the main control upper computer 111 has three functions, namely, establishing contact with the upper computer of the signal end 101 to be tested through a script, and simulating the operation of manually clicking interface keys to control the generation of relevant signals; secondly, controlling a hardware switch of the radio frequency switching network 113, namely switching ports of the signal end 101 to be tested and the instrument end 103; thirdly, a parameter configuration template can be imported to form a database, parameters and measurement modes can be modified in the database, data related to the modes are screened out after the measurement modes are judged, communication connection is established with instruments of the corresponding measurement modes, corresponding function modules are executed, and a test report is automatically generated.
In one embodiment of the present invention, the upper computer 112 of the signal terminal to be tested may import the parameter configuration template through manual operation or automatic operation, and may modify the loaded database to update the configuration of the signal terminal to be tested 101, so as to generate the signal to be tested.
In one embodiment of the present invention, the instruments at the instrument end 103 have SCPI program control functions, and the number is greater than or equal to 1.
As shown in fig. 2, for convenience of describing the whole testing method flow, the following description uses a signal end to be tested 101 as a transmitter capable of generating a communication signal, a radar signal and an interference signal, a master control upper computer 111 as an upper computer written by MATLAB R2016a platform, a signal end to be tested upper computer 112 as an upper computer written by Qt platform, and an instrument end 103 as a Keysight N9040B UXA X series signal analyzer and a Keysight DSOX6002A oscilloscope, wherein a parameter configuration template adopts txt file format, and a report generation file is a Word file.
Preparation work: (1) the test system shown in fig. 1 is well established, wherein a control end 102 is connected with a signal end 101 to be tested by adopting an LNA (low-noise amplifier), the control end 102 is connected with an instrument end 103 by adopting a network switch as an intermediate bridge to connect the LNA, one or more instruments are connected to the network switch, and a Keysight IOLibSuite suite or VISA (visual access architecture) drive of NI (national institute of Electrical and electronics) can be installed for facilitating program control of the instruments; (2) starting up and powering on, and opening corresponding upper computer software on the PC; (3) writing a parameter configuration template, filling in corresponding configuration parameters by dividing fields, and ending with "|" between each field, for example: 1, the signal type, the communication signal, the carrier frequency, 15000000, the signal pattern, the QPSK symbol rate and 1000; secondly, the signal number is 2, the signal type is radar interference, the carrier frequency is 30000000, the signal pattern is noise frequency modulation, the signal bandwidth is 2000; thirdly, numbering the signals, wherein the signal type is 3, the radar signal carrier frequency is 45000000, the signal pattern is a conventional pulse signal bandwidth is 3000;
s1, importing external database configuration parameters, and importing the parameter configuration templates into the upper computer of the signal end to be tested 101 and the main control upper computer 111 respectively;
s2, modifying the database and identifying the measurement mode, wherein the signal modulation modes of the parameter configuration template according to the above example are QPSK, noise modulation and conventional pulse, the database of the master control upper computer 111 is filled with special measurement parameter values, such as forming coefficient/BT, measurement reference bandwidth, etc., and the measurement mode is automatically identified or manually adjusted to VSA mode, OBW or OSC mode according to the test requirements;
s3, judging according to the measurement mode, and selecting a corresponding function module, wherein the function modules in the VSA, OBW and OSC measurement modes are a demodulation performance measurement module, a signal bandwidth measurement module and a time domain waveform measurement module respectively;
s4, data screening related to the mode N, sequentially executing VSA, OBW and OSC measurement modes in sequence, and screening out signal parameters conforming to the current measurement mode;
s5, executing a communication connection establishing module, wherein the VSA and the OBW use a function module in a signal analyzer, and the OSC uses a function module in an oscilloscope, so that the IP address of the control end 102 needs to be modified when the function modules are switched, and the IP settings of the control end 102 and the instrument are in the same network segment;
s6, script control of hard software, which is mainly divided into configuration and execution of a script of an upper computer of the signal terminal 101 to be tested and switching of a script control radio frequency vector network switch;
s7, executing a corresponding function module, synthesizing the screened signal parameters and the SCPI instruction of the matched measuring instrument, sending the synthesized signal parameters and the SCPI instruction to the instrument end 103, receiving the test data fed back by the instrument, judging whether the processing of all the mode data is finished after the current measuring mode is executed, returning to the step S4 if the processing is not finished, and executing the step S8 if all the processing is finished;
and S8, after the report generation module is executed, the generated Word report can be opened, the EVM value of QPSK, the bandwidth value of linear frequency modulation, the pulse width of conventional pulse, the pulse period and other signal measurement parameters can be checked, and whether the test result is qualified or not can be checked.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An automatic test method applied to a transmitter, characterized by comprising the steps of:
s1, importing external database configuration parameters, and importing parameter configuration templates into a signal end upper computer to be tested and a master control upper computer respectively;
s2, modifying the database and identifying the measuring mode, modifying or filling special measuring parameter values in the database according to the signal modulation mode, and automatically identifying or manually adjusting the measuring mode;
s3, judging according to the measuring mode, selecting the corresponding function module, and directly jumping to the step S8 if no corresponding measuring mode exists;
s4, screening data related to the mode N (N is 1,2,3, …), and screening signal parameters conforming to the current measurement mode N;
s5, executing a communication connection establishment module, establishing communication connection between the master control upper computer and an instrument with a corresponding measurement mode, judging whether the communication connection is established, and if not, checking whether the hardware connection, the instrument and the IP setting of a control end are in the same network segment to troubleshoot the problem until the communication connection is established;
s6, script control of hard software, namely script configuration and execution of an upper computer at a signal end to be detected and script control of switching of a radio frequency vector network switch;
s7, executing a corresponding function module, synthesizing the screened signal parameters and the SCPI instruction of the matched measuring instrument, sending the synthesized signal parameters and the SCPI instruction to the instrument end, receiving the test data fed back by the instrument, judging whether all mode data processing is finished after the current measuring mode is executed, returning to the step S4 if the processing is not finished, and executing the step S8 if all the processing is finished;
and S8, executing a report generation module, analyzing and processing the acquired data and generating report files with various specific requirements.
2. The automatic test method applied to a transmitter of claim 1, wherein the report file is in a Word, Excel or PDF format.
3. The method according to claim 1, wherein the measurement mode comprises a selection of functional function modules integrated by different SCPI commands, the functional function modules comprise a signal spectrum acquisition module, an accurate frequency point measurement module, a signal bandwidth measurement module, a signal power measurement module, a phase noise measurement module, a harmonic clutter measurement module, a demodulation performance measurement module, and a time domain waveform measurement module, and the functional function modules and the measurement mode are arbitrarily added according to test requirements and instrument functions.
4. The method of claim 1, wherein the parameter configuration template has one or more modulation schemes according to various types of signals, and parameter fields can be added or deleted, and the file format is txt, csv, xml or xls.
5. An automatic test system applying an automatic test method for a transmitter according to any one of claims 1 to 4, comprising a signal terminal to be tested, a control terminal and an instrument terminal;
the signal end to be detected is a transmitter which generates signals under the control of an upper computer of the signal end to be detected, the generated signals comprise communication signals, radar signals, interference signals, navigation signals and other types and any combination of multiple modulation modes, and signals up to hundreds of paths can exist on a certain frequency band instantly;
the control end runs on the PC and comprises a master control upper computer and a signal end upper computer to be detected;
the instrument end is used for receiving the control instruction sent by the control end, configuring the measurement function, measuring the signal to be measured generated by the signal end to be measured, receiving the query instruction sent by the control end and feeding back the measurement data.
6. The automatic test system applied to the transmitter of claim 5, wherein the master upper computer establishes a connection with the upper computer of the signal end to be tested through a script to simulate an operation of manually clicking an interface key to control generation of a related signal; the master control upper computer switches the ports of the signal end to be tested and the instrument end under the control of a radio frequency switching network hardware switch; and importing a parameter configuration template into the master control upper computer to form a database, modifying parameters and measurement modes in the database, screening out data related to the modes after judging the measurement modes, establishing communication connection with instruments of the corresponding measurement modes, executing corresponding function modules, and automatically generating a test report.
7. The automatic test system for the transmitter according to claim 5, wherein the upper computer of the signal terminal to be tested imports the parameter configuration template through manual operation or automatic operation, and can modify the loaded database to update the configuration of the signal terminal to be tested to generate the signal to be tested.
8. The automatic test system applied to the transmitter of claim 5, wherein the number of the instruments at the instrument end is greater than or equal to 1, and the instruments at any instrument end have SCPI program control function.
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