CN117630833A - Automatic testing method and system for jammer based on Qt - Google Patents
Automatic testing method and system for jammer based on Qt Download PDFInfo
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Abstract
The invention relates to an automatic testing method and system of an jammer based on Qt, wherein the automatic testing method comprises the following steps: installing automatic test software and driving; connecting upper and lower system hardware through each interface, and setting power supply voltage; identifying the jammer products and the instrument equipment in the software part; simulating radar parameters, and configuring corresponding radio frequency power, power and pulse modulation parameters; starting a test flow; calling a write function of a serial port class in the Qt standard library, and sending a test instruction to the jammer through a serial port; and (5) sorting and summarizing. The automatic test system comprises a signal source, a turntable, an jammer product, a power amplifier, an antenna and an upper computer control terminal. According to the automatic test method, a plurality of instruments and equipment and test products are concentrated into the same test system, and a computer is used for simulating the operation of adjusting the signal source frequency, sending data acquisition instructions to the test products and adjusting the angle of the turntable by a tester, so that the test time is greatly shortened.
Description
Technical Field
The invention relates to the technical field of electronic communication, in particular to an automatic testing method and system for an jammer based on Qt.
Background
In recent years, with the rapid development of the anti-interference technology of modern radars, the requirements on various indexes of the jammers are also higher and higher, and the measurement of the azimuth angle of radar signals is one of the most important performance indexes of the jammers. The accuracy of azimuth measurement relates to whether the energy of the interference signals transmitted by the jammers can be concentrated in the direction of threat radar, and the more concentrated the energy is, the greater the probability of interference success. Because each set of products of the jammer has a systematic error, and the systematic error is an error with a certain rule belonging to the system, the measurement finds that the direction-finding test is needed for each set of products in order to ensure that the measured result of the azimuth angle of the jammer is affected by the systematic error as small as possible.
At present, the existing testing mode of the direction finding of the jammer is to connect a signal source, a turntable, a jammer product to be tested and a computer respectively, adjust the signal source to sequentially output analog radar signals of 29 frequency points with the frequency from 4GHz to 18GHz and the frequency of 0.5GHz being the interval, send data acquisition instructions to the product to be tested on each frequency point by using a serial port assistant on the computer, receive the analog radar signals output by the signal source after the product to be tested receives the instructions, return the acquired data in the serial port, and manually record the data on a test record table by a tester. Then manually adjusting the turntable to 19 azimuth angles from-45 degrees to 45 degrees and 5 degrees at intervals, and sequentially repeating the data acquisition and recording work of the 29 frequency point signals at each angle. The testing method is complex in steps, long in testing time, and most of the testing methods are repeated, so that accuracy of test data cannot be guaranteed. Meanwhile, with the upgrading iteration of the product, the manual testing method cannot meet the testing requirements of denser frequency points and angles. Therefore, it is desirable to design an automatic test system for jammer direction finding data acquisition.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automatic testing method of an jammer based on Qt, which is built based on an automatic testing system of the jammer based on Qt and comprises the following steps:
step S1: installing automatic test software on a computer, and if so, before starting the test software for the first time, checking whether the computer is already installed with an NI-VISA driver for driving instrument equipment;
step S2: connecting a signal source and a computer provided with an automatic test terminal through a LAN (local area network) port by using a network cable, connecting an interfering machine product to be tested and the computer by using an RS485 serial port to a USB (universal serial bus) line, connecting a turntable controller and the computer by using a USB line, connecting an adjustable power supply and the interfering machine product by using a cable, setting the output voltage of the adjustable power supply to be 28v, switching on the power supply to supply power to the interfering machine, and switching on all instrument equipment;
step S3: manually searching the address of a signal source in a signal source control area of a control terminal, clicking a 'connection check' button to finish the identification of the signal source, clicking a 'USB connection' button in a turntable control area to finish the identification of a turntable controller, clicking a 'scanning serial port' button in an automatic test area and selecting a corresponding serial port number, clicking a 'serial port connection' button to finish the identification of an jammer product;
step S4: after the control terminal identifies the test instrument equipment, configuring corresponding radio frequency power and pulse modulation parameters according to the simulated radar parameters specified by the test plan in a signal source control area of the main interface, and setting corresponding automatic test parameters according to intervals and intervals of radio frequency and azimuth angles in the plan;
step S5: clicking a 'start test' button of an automatic test area of a main interface of the control terminal to start a test flow;
step S6: when the signal source is switched to each frequency point, the test terminal calls a write function of a serial port class in the Qt standard library and sends a test instruction to the jammer through the serial port; after the last angle and frequency point test is completed, the test terminal automatically sends an instruction, a signal source is closed, and a tester can check and accept the data of the test to a designated file storage path at the moment;
step S7: and the test staff averages the obtained test results of each frequency point at each angle and then collates and gathers the test results.
In one embodiment of the present invention, before the control terminal performs the test procedure in step S5, software will first call the VISA library controlled by the instrument and the mt_api library controlled by the turntable, named mt_open_usb, mt_check, and viOpen functions, to Check the connection states of the signal source and the turntable, and only if the return result is true, the automatic test task can be continuously executed, otherwise, the window flicking warning will be performed;
when the test flow is carried out, after the software reads the simulated radar parameters and the automatic test parameters on the main interface, a virrite function in a VISA library and an MT_set_axis_position_P_target_abs function of an MT_API library are called to send control instructions to a signal source and a turntable, frequency stepping and angle stepping are carried out according to a Set frequency range and an angle range in the automatic test parameters at specified intervals, and a scene when an jammer receives radar signals of various frequencies from different directions is simulated;
in the automatic test, the progress of the current test task is displayed in real time through a state display area of a main interface of the test terminal, and a tester can monitor the progress of the test in real time.
In one embodiment of the present invention, after receiving the test instruction, the jammer in step S6 returns the test result to the test terminal through the serial port, triggers the readyRead signal in the Qt serial port class after receiving the data, invokes the QFile and QTextStream class in the slot function, and stores the data in the specified excel file.
The invention also provides an automatic testing system of the jammer based on Qt, which comprises:
the upper computer control terminal is integrated in the computer and respectively transmits control instructions to the signal source, the turntable and the jammer products through the network port, the RS485 serial port and the usb port according to the test flow in the program;
the signal source is used for inputting analog radar signals of corresponding parameters into the power amplifier after receiving control instructions which are sent by the upper computer control terminal through the network port and comprise radio frequency, radio frequency power and pulse modulation parameters, and finally sending the analog radar signals to the jammer products through the antenna;
the system comprises an interference machine product, a standby mode, a detection mode, a signal source, a serial port and a control terminal, wherein the interference machine product is switched to the detection mode from the standby mode after receiving a test instruction sent by the control terminal through the RS485 serial port, receives analog radar signals of corresponding parameters sent by the signal source through the antenna, and transmits numerical values sampled by two planar spiral antennas on the interference machine product back to the control terminal through the serial port for sorting and storage;
a power amplifier that compensates for line loss of the analog radar signal from the signal source to the antenna;
and an antenna for transmitting the analog radar signal transmitted from the signal source through the power amplifier to the jammer product with a certain gain.
In one embodiment of the invention, the signal source and the upper computer control terminal are connected through a LAN port by using a network cable, and are communicated by adopting a TCP/IP protocol.
In one embodiment of the invention, the automatic testing system of the jammer further comprises a turntable which is a turntable system and comprises a turntable driven by a servo motor, wherein a tool for fixing the jammer product to be tested and a controller of the turntable are arranged on the turntable;
during testing, the automatic testing terminal sends an instruction to the turntable controller through the usb port, and the turntable controller drives the turntable to perform corresponding actions.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the automatic testing method of the jammer, a plurality of instruments and equipment and test products are concentrated into the same testing system, a computer is used for simulating the operation of adjusting the frequency of a signal source, sending an instruction for collecting data to the test products and adjusting the angle of the turntable by using the test personnel, so that the testing time is greatly shortened, the testing efficiency is improved, and as the operation of most instruments and equipment is packaged by using computer codes, the requirement on the capability of the test personnel is greatly reduced, and the risk caused by the capability of the test personnel is reduced.
According to the automatic testing method of the jammer, provided by the invention, a tester can independently configure the frequency step, the angle step-like length and the modulation parameter of the analog radar signal sent by the signal source in the testing process of the testing terminal according to different product testing requirements, so that the method has stronger adaptability, repeated development is not needed, the testing cost in the upgrading iterative process of the same type of products is reduced, and the research and development time and the cost are saved.
Thirdly, the automatic testing system of the jammer displays the progress and the state information in the automatic testing process in real time through the testing terminal and reserves the progress and the state information in the log, so that a tester can conveniently and quickly check the current testing progress, quickly find out problems and immediately stop testing, and check the problems according to the log information, thereby saving the testing time.
Fourth, the automatic testing system of the jammer automatically saves the testing result returned by the product into the appointed EXCEL file according to the fixed format through the program, reduces the probability of deviation of the testing result caused by human error, and improves the reliability of the testing result.
Fifth, the connecting lines in front of each module of the automatic testing system of the jammer can be prolonged in a switching mode, so that a tester can control and monitor the system outside a microwave dark room where testing is performed, the time of exposing the tester to radio frequency radiation is greatly reduced, and the personal health of the tester is effectively ensured.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
FIG. 1 is a diagram of the connection of objects of the present invention;
FIG. 2 is a flow chart of the automatic test software according to the present invention;
FIG. 3 is a layout of a main interface of an automatic test terminal according to the present invention;
FIG. 4 is a summary table of test results according to the present invention;
FIG. 5 is a graph showing a summary of test results according to the present invention.
Detailed Description
Example 1
The embodiment provides an automatic testing method of an jammer based on Qt, which is built based on an automatic testing system of the jammer based on Qt and specifically comprises the following steps:
s1: and installing automatic test software on the computer, if the automatic test software is used for the first time, before starting the test software, checking whether the computer is already installed with an NI-VISA driver for driving the instrument and equipment, if the automatic test software is not installed, installing the driver, otherwise, starting the software cannot be performed.
S2: as shown in fig. 2, a network cable is used to connect a signal source with a computer provided with an automatic test terminal through a LAN port, an RS485 serial port is used to convert a USB cable to connect an jammer product to be tested with the computer, a USB cable is used to connect a turntable controller with the computer, an adjustable power supply is used to connect the adjustable power supply with the jammer product, the output voltage of the adjustable power supply is set to 28v, the power supply is turned on to supply power to the jammer, and all instrument equipment is turned on.
S3: as shown in fig. 3, the address of the signal source is manually searched in the signal source control area of the control terminal, then the "connection check" button is clicked to finish the identification of the signal source, the "USB connection" button is clicked in the turntable control area to finish the identification of the turntable controller, the "scanning serial port" button is clicked in the automatic test area and the corresponding serial port number is selected, the "serial port connection" button is clicked, and the identification of the jammer products is finished.
S4: after the control terminal identifies the test instrument equipment, corresponding radio frequency power and pulse modulation parameters are configured in a signal source control area of the main interface according to the simulated radar parameters specified by the test plan, and corresponding automatic test parameters are set according to intervals and intervals of radio frequency and azimuth angles in the plan.
S5: clicking a 'start test' button of the main interface automatic test area of the control terminal to start a test flow.
Before the control terminal performs automatic test, software will firstly call the connection states of the signal source and the turntable, which are respectively checked by MT_Open_USB, MT_check and viOpen functions in the VISA library controlled by the instrument and the MT_API library controlled by the turntable, and the automatic test task can be continuously executed only when the return result is true, otherwise, the window flicking warning is performed. When the testing process is carried out, after the software reads the simulated radar parameters and the automatic testing parameters on the main interface, the software calls the viWrite function in the VISA library and the MT_set_axis_position_P_target_abs function of the MT_API library to send control instructions to the signal source and the turntable, and frequency stepping and angle stepping are carried out according to the Set frequency range and angle range in the automatic testing parameters and at specified intervals, so that the scene when the jammer receives radar signals with various frequencies from different directions is simulated.
In the automatic test, the progress of the current test task is displayed in real time through a state display area of a main interface of the test terminal, and a tester can monitor the progress of the test in real time.
S6: when the signal source is switched to each frequency point, the test terminal can call a write function of the serial port class in the Qt standard library and send a test instruction to the jammer through the serial port. After receiving the test instruction, the jammer returns the test result to the test terminal through the serial port, triggers a readyRead signal in the Qt serial port class after receiving the data, calls Qfile and QTextstream classes in the slot function, and stores the data into a specified excel file. After the last angle and frequency point test is completed, the test terminal automatically sends an instruction, the signal source is closed, and at the moment, a tester can check and accept the data of the test to the designated file storage path.
And S7, the testers average the obtained test results of each frequency point at each angle to obtain a summary table shown in fig. 4, and the summarized data are used as a comparison table for reporting the interference target azimuth information by the interference machine. As can be seen from the line graph shown in fig. 5, as the interference target azimuth angle value increases, the sampling value reported by the jammer increases.
The NI-VISA described in S1 above is a virtual instrument software architecture API, and provides a programming interface to control Ethernet/LXI, GPIB, serial, USB, PXI and VXI instruments in the NI application development Environment (LabVIEW). The API is installed via the NI-VISA driver.
It should be noted that the test terminal uses the standard SCPI protocol control signal source to switch the frequency, power and pulse modulation parameters.
Among them, SCPI (Standard Commands forProgrammable Instruments —standard command for programmable devices) is a standardized instrument programming language based on existing standards IEEE488.1 and IEEE488.2, defining a set of standard syntax and commands for controlling programmable test measurement instruments. Compatibility of the programming environment is ensured by using standardized programming information, instrument responses, and data formats. Conventional signal sources are capable of recognizing and executing the SCPI standard instruction set.
Example two
An automatic testing system of an jammer based on Qt comprises a signal source, a turntable, jammer products, a power amplifier, an antenna and an upper computer control terminal.
The upper computer control terminal is used for respectively sending control instructions to the signal source, the turntable and the jammer products through the network port, the RS485 serial port and the usb port according to the test flow in the program.
The signal source is used for inputting the analog radar signals of the corresponding parameters into the power amplifier after receiving the control instructions which are sent by the upper computer control terminal through the network port and comprise the radio frequency, the radio frequency power and the pulse modulation parameters, and finally sending the analog radar signals to the jammer products through the antenna.
The turntable is used for carrying the jammer product to rotate to a corresponding angle after receiving the angle rotation instruction sent by the upper computer control terminal through the usb port and simulating the jammer to receive radar signals of different angles
The jammer product is used for switching from a standby mode to a detection mode after receiving a test instruction sent by the control terminal through the RS485 serial port, receiving analog radar signals of corresponding parameters sent by the signal source through the antenna, and transmitting the numerical values sampled by the two planar spiral antennas on the jammer product back to the control terminal through the serial port for sorting and storing.
The power amplifier described above is used to compensate for line loss of an analog radar signal from a signal source to an antenna.
The antenna is used for transmitting the analog radar signal transmitted from the signal source through the power amplifier to the jammer product with a certain gain.
Further, the signal source and the upper computer control terminal are connected through a LAN port by using a network cable, and are communicated by adopting a TCP/IP protocol.
Further, the turntable is a turntable system and comprises a turntable driven by a servo motor, and a tool for fixing the product of the jammer to be tested and a controller of the turntable are arranged on the turntable.
During testing, the automatic testing terminal sends an instruction to the turntable controller through the usb port, and the turntable controller drives the turntable to perform corresponding actions.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (6)
1. The automatic testing method of the jammer based on the Qt is built based on an automatic testing system of the jammer based on the Qt and is characterized by comprising the following steps:
step S1: installing automatic test software on a computer, and if so, before starting the test software for the first time, checking whether the computer is already installed with an NI-VISA driver for driving instrument equipment;
step S2: connecting a signal source and a computer provided with an automatic test terminal through a LAN (local area network) port by using a network cable, connecting an interfering machine product to be tested and the computer by using an RS485 serial port to a USB (universal serial bus) line, connecting a turntable controller and the computer by using a USB line, connecting an adjustable power supply and the interfering machine product by using a cable, setting the output voltage of the adjustable power supply to be 28v, switching on the power supply to supply power to the interfering machine, and switching on all instrument equipment;
step S3: manually searching the address of a signal source in a signal source control area of a control terminal, clicking a 'connection check' button to finish the identification of the signal source, clicking a 'USB connection' button in a turntable control area to finish the identification of a turntable controller, clicking a 'scanning serial port' button in an automatic test area and selecting a corresponding serial port number, clicking a 'serial port connection' button to finish the identification of an jammer product;
step S4: after the control terminal identifies the test instrument equipment, configuring corresponding radio frequency power and pulse modulation parameters according to the simulated radar parameters specified by the test plan in a signal source control area of the main interface, and setting corresponding automatic test parameters according to intervals and intervals of radio frequency and azimuth angles in the plan;
step S5: clicking a 'start test' button of an automatic test area of a main interface of the control terminal to start a test flow;
step S6: when the signal source is switched to each frequency point, the test terminal calls a write function of a serial port class in the Qt standard library and sends a test instruction to the jammer through the serial port; after the last angle and frequency point test is completed, the test terminal automatically sends an instruction, a signal source is closed, and a tester can check and accept the data of the test to a designated file storage path at the moment;
step S7: and the test staff averages the obtained test results of each frequency point at each angle and then collates and gathers the test results.
2. The jammer automatic test method of claim 1; the method is characterized in that: before the control terminal performs the test flow in step S5, software will call the VISA library controlled by the instrument and the mt_api library controlled by the turntable, named mt_open_usb, mt_check, and vipen functions, to Check the connection states of the signal source and the turntable, and only if the return result is true, the automatic test task can be continuously executed, otherwise, the window flicking warning will be performed;
when the test flow is carried out, after the software reads the simulated radar parameters and the automatic test parameters on the main interface, a virrite function in a VISA library and an MT_set_axis_position_P_target_abs function of an MT_API library are called to send control instructions to a signal source and a turntable, frequency stepping and angle stepping are carried out according to a Set frequency range and an angle range in the automatic test parameters at specified intervals, and a scene when an jammer receives radar signals of various frequencies from different directions is simulated;
in the automatic test, the progress of the current test task is displayed in real time through a state display area of a main interface of the test terminal, and a tester can monitor the progress of the test in real time.
3. The jammer automatic test method of claim 1; the method is characterized in that: and after receiving the test instruction, the jammer in the step S6 returns a test result to the test terminal through the serial port, triggers a readyRead signal in the Qt serial port class after receiving the data, calls Qfile and QTextstream class in the slot function, and stores the data into a specified excel file.
4. An automatic testing system of jammer based on Qt, comprising:
the upper computer control terminal is integrated in the computer and respectively transmits control instructions to the signal source, the turntable and the jammer products through the network port, the RS485 serial port and the usb port according to the test flow in the program;
the signal source is used for inputting analog radar signals of corresponding parameters into the power amplifier after receiving control instructions which are sent by the upper computer control terminal through the network port and comprise radio frequency, radio frequency power and pulse modulation parameters, and finally sending the analog radar signals to the jammer products through the antenna;
the system comprises an interference machine product, a standby mode, a detection mode, a signal source, a serial port and a control terminal, wherein the interference machine product is switched to the detection mode from the standby mode after receiving a test instruction sent by the control terminal through the RS485 serial port, receives analog radar signals of corresponding parameters sent by the signal source through the antenna, and transmits numerical values sampled by two planar spiral antennas on the interference machine product back to the control terminal through the serial port for sorting and storage;
a power amplifier that compensates for line loss of the analog radar signal from the signal source to the antenna;
and an antenna for transmitting the analog radar signal transmitted from the signal source through the power amplifier to the jammer product with a certain gain.
5. The jammer automatic test system of claim 4; the method is characterized in that: the signal source is connected with the upper computer control terminal through the LAN port by using a network cable, and the TCP/IP protocol is adopted for communication.
6. The jammer automatic test system of claim 4; the method is characterized in that: the automatic testing system of the jammer also comprises a turntable which is a set of turntable system and comprises a turntable driven by a servo motor, wherein a set of tool for fixing the jammer product to be tested and a controller of the turntable are arranged on the turntable;
during testing, the automatic testing terminal sends an instruction to the turntable controller through the usb port, and the turntable controller drives the turntable to perform corresponding actions.
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